Air conditioning refrigeration control method, air conditioner and computer readable storage medium

Abstract

The present invention discloses an air conditioning refrigeration control method, an air conditioner and a computer-readable storage medium. The air conditioning refrigeration control method continuously detects changes in indoor and outdoor ambient temperatures after refrigeration operation to obtain an instantaneous capacity demand of the indoor heat load, and continuously updates the capacity demand over time, so that the air conditioner can determine the indoor heat load in real time; then, a target evaporating temperature is determined according to the instantaneous capacity demand, and the target evaporating temperature is also continuously updated over time; finally, the operating frequency of the compressor is adjusted accordingly according to the continuously changing target evaporating temperature, so that the actual evaporating temperature can fit the target evaporating temperature, thereby realizing that the evaporating temperature control changes in accordance with the real-time heat load changes, and achieving the effect of precise indoor temperature control.

Description

Technical Field

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

[0002] With the rapid development of air conditioning technology, various types of air conditioners have become widely used in people's daily lives. Existing air conditioners often need to control the evaporation temperature of the heat exchanger during cooling operation. Existing air conditioners typically control the evaporation temperature by taking a fixed value or a simple temperature range as the target evaporation temperature. However, as the air conditioner operates, the indoor environment's capacity requirements will also change. If the air conditioner continues to control the evaporation temperature in this way and operates, it will often cause large fluctuations in indoor temperature, and even cause the indoor unit to frequently start and stop when overcooling. All of the above situations reflect the difficulty of existing air conditioning cooling methods in achieving precise control of indoor temperature. Summary of the Invention

[0003] The main purpose of the present invention is to provide an air conditioning refrigeration control method, an air conditioner and a computer-readable storage medium, aiming to solve the technical problem that the existing air conditioning refrigeration method is difficult to achieve precise control of indoor temperature.

[0004] To achieve the above object, the present invention provides an air conditioning refrigeration control method, the air conditioning refrigeration control method comprising:

[0005] After the air conditioner is in cooling operation, detecting the indoor temperature, outdoor temperature and actual evaporation temperature of the air conditioner during operation;

[0006] After the indoor temperature meets a preset condition, determining an instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature, determining a target evaporating temperature according to the instantaneous capacity requirement, and determining an operating frequency and an operation cycle of the compressor in the air conditioner based on the target evaporating temperature and the actual evaporating temperature;

[0007] After controlling the compressor to operate at the operating frequency for a number of the action cycles, if the actual evaporating temperature does not reach the target evaporating temperature at this time, returning to the step of determining the instantaneous capacity requirement of the indoor heat load based on the currently detected indoor temperature and outdoor temperature until the air conditioner meets the preset stop condition.

[0008] Optionally, after the indoor temperature satisfies a preset condition, the steps of determining an instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature, determining a target evaporating temperature according to the instantaneous capacity requirement, and determining an operating frequency and an operation cycle of a compressor in the air conditioner based on the target evaporating temperature and the actual evaporating temperature include:

[0009] When the indoor temperature meets a preset condition, determining an initial value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature at that time;

[0010] The initial temperature value of the target evaporation temperature is determined based on the initial demand value, the temperature difference between the actual evaporation temperature and the initial temperature value is obtained, and the operation frequency and action cycle are determined based on the temperature difference.

[0011] Optionally, after controlling the compressor to operate at the operating frequency for a plurality of the operation cycles, if the actual evaporating temperature does not reach the target evaporating temperature, returning to the step of determining the instantaneous capacity requirement of the indoor heat load based on the currently detected indoor and outdoor temperatures until the air conditioner meets a preset stop condition includes:

[0012] Controlling the compressor to operate at the operating frequency for the operation cycle;

[0013] If the actual evaporation temperature does not reach the initial temperature value after one action cycle, determining an updated value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature after one action cycle;

[0014] determining a temperature update value of the target evaporation temperature according to the demand update value;

[0015] The step of obtaining the temperature difference between the actual evaporating temperature and the initial temperature value is returned based on the temperature update value until the actual evaporating temperature reaches the target evaporating temperature, and it is determined that the air conditioner meets the preset stop condition.

[0016] Optionally, after the step of controlling the compressor to operate at the operating frequency for the action cycle, the method further includes:

[0017] If the actual evaporation temperature after one of the action cycles reaches the initial temperature value, determining whether a change value of the indoor temperature within a preset time period after one of the action cycles is less than a preset change value;

[0018] If not, the process returns to the step of determining the demand update value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature after one operation cycle.

[0019] Optionally, before the step of determining the instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature after the indoor temperature meets a preset condition, the method further includes:

[0020] Determine the set temperature;

[0021] After the step of determining whether the change value of the indoor temperature within the preset time period after an action cycle is less than the preset change value, the method further includes:

[0022] If so, determining whether the indoor temperature is within the temperature control range determined by the set temperature after one of the action cycles;

[0023] If so, the process returns to the step of determining the demand update value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature after one operation cycle.

[0024] Optionally, after the step of determining whether the indoor temperature after one action cycle is within the temperature control range determined by the set temperature, the method further includes:

[0025] If not, determining the demand update value according to the indoor temperature and the outdoor temperature after one of the action cycles, and determining the temperature update value based on the demand update value;

[0026] increasing or decreasing the temperature update value according to the magnitude relationship between the indoor temperature and the set temperature after an action cycle to obtain a temperature correction value of the target evaporating temperature;

[0027] The step of obtaining the temperature difference between the actual evaporation temperature and the initial temperature value is returned based on the temperature correction value until the actual evaporation temperature reaches the target evaporation temperature.

[0028] Optionally, the step of determining the initial value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature at this time includes:

[0029] Acquiring environmental information corresponding to the air conditioner, and obtaining an instantaneous cooling load based on the environmental information, the indoor temperature and outdoor temperature at this time, and preset parameters;

[0030] Obtaining the sensible heat load to be removed based on the indoor temperature and the set temperature;

[0031] The instantaneous cooling load and the sensible heat load to be removed are added together to obtain the initial demand value.

[0032] Optionally, before the step of determining the instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature after the indoor temperature meets a preset condition, the method further includes:

[0033] Determining whether the difference between the indoor temperature and the set temperature is less than a preset temperature difference threshold;

[0034] If so, it is determined that the indoor temperature meets the preset condition.

[0035] Optionally, the step of determining the initial temperature value of the target evaporation temperature based on the initial demand value includes:

[0036] The rated power of the air conditioner, the initial demand value, and a calculation result of the indoor temperature and the outdoor temperature under a preset functional relationship are obtained as the initial temperature value.

[0037] In addition, to achieve the above-mentioned purpose, the present invention further provides an air conditioning refrigeration control device, the air conditioning refrigeration control device comprising:

[0038] A cooling temperature acquisition module is used to detect the indoor temperature, outdoor temperature and actual evaporation temperature of the air conditioner during operation after the air conditioner is in cooling operation;

[0039] an instantaneous demand determination module, configured to determine, after the indoor temperature satisfies a preset condition, an instantaneous capacity demand of the indoor heat load based on the currently detected indoor and outdoor temperatures, determine a target evaporating temperature based on the instantaneous capacity demand, and determine an operating frequency and an operation cycle of the compressor in the air conditioner based on the target evaporating temperature and the actual evaporating temperature;

[0040] The refrigeration operation control module is used to control the compressor to operate at the operating frequency for a number of the action cycles. If the actual evaporating temperature does not reach the target evaporating temperature at this time, the module returns to the step of determining the instantaneous capacity requirement of the indoor heat load based on the currently detected indoor temperature and outdoor temperature until the air conditioner meets the preset stop condition.

[0041] Optionally, the instantaneous demand determination module includes:

[0042] an initial value determining unit, configured to determine an initial value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature at that time when the indoor temperature meets a preset condition;

[0043] The initial frequency determination unit is configured to determine an initial temperature value of the target evaporation temperature based on the initial demand value, obtain a temperature difference between the actual evaporation temperature and the initial temperature value, and determine the operation frequency and action period based on the temperature difference.

[0044] Optionally, the refrigeration operation control module includes:

[0045] A refrigeration operation control unit, configured to control the compressor to operate at the operating frequency for the operation cycle;

[0046] an initial value updating unit, configured to determine a demand update value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature after the action cycle if the actual evaporating temperature does not reach the temperature initial value after the action cycle, and determine a temperature update value of the target evaporating temperature based on the demand update value;

[0047] a temperature update determining unit, configured to determine a temperature update value of the target evaporation temperature according to the required update value;

[0048] An update value execution unit is used to return to execute the step of obtaining the temperature difference between the actual evaporating temperature and the initial temperature value based on the temperature update value, until the actual evaporating temperature reaches the target evaporating temperature, and then determine that the air conditioner meets the preset stop condition.

[0049] Optionally, the refrigeration operation control module includes:

[0050] a change value judging unit, configured to judge whether a change value of the indoor temperature within a preset time period after an action cycle is less than a preset change value if the actual evaporating temperature after an action cycle reaches the initial temperature value;

[0051] The first returning unit is configured to, if no, return to the step of determining the demand update value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature after one action cycle.

[0052] Optionally, the air conditioning cooling control device further includes:

[0053] A set temperature determination module, used to determine the set temperature;

[0054] The refrigeration operation control module includes:

[0055] a temperature control interval judgment unit, configured to judge whether the indoor temperature is within the temperature control interval determined by the set temperature after one of the action cycles;

[0056] The second returning unit is configured to, if yes, return to the step of determining the demand update value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature after one action cycle.

[0057] Optionally, the refrigeration operation control module includes:

[0058] a temperature update determining unit, configured to, if not, determine the demand update value according to the indoor temperature and the outdoor temperature after one of the action cycles, and determine the temperature update value based on the demand update value;

[0059] a temperature correction obtaining unit, configured to increase or decrease the temperature update value according to the magnitude relationship between the indoor temperature and the set temperature after an action cycle, so as to obtain a temperature correction value of the target evaporating temperature;

[0060] The third returning unit is configured to return to the step of obtaining the temperature difference between the actual evaporating temperature and the initial temperature value based on the temperature correction value until the actual evaporating temperature reaches the target evaporating temperature.

[0061] Optionally, the initial value determination unit is further configured to:

[0062] Acquiring environmental information corresponding to the air conditioner, and obtaining an instantaneous cooling load based on the environmental information, the indoor temperature and outdoor temperature at this time, and preset parameters;

[0063] Obtaining the sensible heat load to be removed based on the indoor temperature and the set temperature;

[0064] The instantaneous cooling load and the sensible heat load to be removed are added together to obtain the initial demand value.

[0065] Optionally, the air conditioning and refrigeration control device further includes:

[0066] A temperature difference threshold judgment module is used to judge whether the difference between the indoor temperature and the set temperature is less than a preset temperature difference threshold;

[0067] The temperature difference threshold determination module is used to determine that if yes, the indoor temperature meets the preset condition.

[0068] Optionally, the initial frequency determining unit is further configured to:

[0069] The rated power of the air conditioner, the initial demand value, and a calculation result of the indoor temperature and the outdoor temperature under a preset functional relationship are obtained as the initial temperature value.

[0070] In addition, to achieve the above-mentioned purpose, the present invention also provides an air conditioner, which includes: a memory, a processor, and an air conditioning and refrigeration control program stored in the memory and runnable on the processor. When the air conditioning and refrigeration control program is executed by the processor, the steps of the air conditioning and refrigeration control method as described above are implemented.

[0071] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, on which an air conditioning and refrigeration control program is stored. When the air conditioning and refrigeration control program is executed by a processor, the steps of the air conditioning and refrigeration control method as described above are implemented.

[0072] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer program product, including a computer program, which implements the steps of the above-mentioned air-conditioning and refrigeration control method when executed by a processor.

[0073] The present invention provides an air conditioning refrigeration control method, an air conditioner, and a computer-readable storage medium. The air conditioning refrigeration control method continuously detects changes in indoor and outdoor ambient temperatures after a cooling operation to determine the instantaneous capacity demand of the indoor heat load, continuously updating the capacity demand over time. This allows the air conditioner to determine the indoor heat load in real time. A target evaporating temperature is then determined based on the instantaneous capacity demand, also continuously updating the capacity demand over time. Finally, the operating frequency of the compressor is adjusted based on the changing target evaporating temperature to ensure that the actual evaporating temperature matches the target evaporating temperature. This allows the evaporating temperature to be controlled in accordance with real-time heat load changes, achieving precise indoor temperature control. This method addresses the difficulty of achieving precise indoor temperature control with existing air conditioning refrigeration methods.

[0074] In addition, since the present invention adjusts the evaporation temperature in a continuous and stable manner according to the real-time indoor heat load conditions during the entire refrigeration operation adjustment process, it can avoid the large indoor temperature fluctuations caused by the existing refrigeration adjustment method, or the frequent start and stop of the indoor unit after over-cooling, thereby achieving energy-saving effects to a large extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] 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;

[0076] Figure 2 This is a flow chart of a first embodiment of an air conditioning refrigeration control method according to the present invention;

[0077] Figure 3 This is a schematic diagram of a specific system structure in the second embodiment of the air conditioning refrigeration control method of the present invention;

[0078] Figure 4 Schematic diagram of the functional modules of the air-conditioning refrigeration control device of the present invention.

[0079] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0080] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0081] With the rapid development of air conditioning technology, various types of air conditioners have become widely used in people's daily lives. Existing air conditioners often need to control the evaporation temperature of the heat exchanger during cooling operation. Existing air conditioners typically control the evaporation temperature by taking a fixed value or a simple temperature range as the target evaporation temperature. However, as the air conditioner operates, the indoor environment's capacity requirements will also change. If the air conditioner continues to control the evaporation temperature in this way and operates, it will often cause large fluctuations in indoor temperature, and even cause the indoor unit to frequently start and stop when overcooling. All of the above situations reflect the difficulty of existing air conditioning cooling methods in achieving precise control of indoor temperature.

[0082] In order to solve the above technical problems, the present invention provides an air-conditioning refrigeration control method, namely, by continuously detecting the changes in indoor and outdoor ambient temperatures after the refrigeration operation, the instantaneous capacity demand of the indoor heat load is obtained, and it is continuously updated over time, so that the air conditioner can determine the indoor heat load in real time; then the target evaporating temperature is determined according to the instantaneous capacity demand, and it is also continuously updated over time, and finally the operating frequency of the compressor is adjusted accordingly according to the changing target evaporating temperature, so that the actual evaporating temperature can fit the target evaporating temperature, thereby realizing the evaporating temperature control following the changes in the real-time heat load, achieving the effect of precise temperature control indoors, and solving the problem that the existing air-conditioning refrigeration method is difficult to achieve precise control of the indoor temperature.

[0083] like Figure 1 As shown, Figure 1 It is a schematic diagram of the air conditioner structure of the hardware operating environment involved in the embodiment of the present invention.

[0084] like Figure 1 As shown, the air conditioner may include: a processor 1001, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The optional 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). The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0085] Optionally, the air conditioner may also include a camera, RF (Radio Frequency) circuits, sensors, audio circuits, and the like. Sensors include, for example, light sensors and other sensors. Specifically, the light sensors may include ambient light sensors and proximity sensors. The ambient light sensors may adjust the brightness of the display screen based on the brightness of the ambient light. Of course, the air conditioner may also be equipped with other sensors, such as a barometer, hygrometer, thermometer, and infrared sensor, which are not detailed here.

[0086] Those skilled in the art will understand that Figure 1 The air conditioner structure shown in the figure does not constitute a limitation to the air conditioner, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0087] like Figure 1 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an air conditioning and refrigeration control program.

[0088] exist Figure 1 In the air conditioner shown, the network interface 1004 is mainly used to connect to the background server and communicate data with the background server; the user interface 1003 is mainly used to connect to the client (user end) and communicate data with the client; and the processor 1001 can be used to call the above program stored in the memory 1005 and execute the operations in the following air conditioning and refrigeration control method.

[0089] Based on the above hardware structure, various embodiments of the air conditioning refrigeration control method of the present invention are proposed.

[0090] Reference Figure 2 , Figure 2 This is a flow chart of the first embodiment of the air conditioning refrigeration control method.

[0091] A first embodiment of the present invention provides an air conditioning refrigeration control method, the method comprising the following steps:

[0092] Step S10, after the air conditioner is in cooling operation, detecting the indoor temperature, outdoor temperature and actual evaporation temperature of the air conditioner during operation;

[0093] In this embodiment, this method is applied to an air conditioning system, which can be of various types, specifically, a multi-split air conditioning system, a split air conditioning system, and the like. Taking a multi-split system as an example, current multi-split systems often use a fixed target evaporating temperature in both single- and multiple-split modes. This results in a poorly matched system output when operating in a single mode, large room temperature fluctuations, or frequent temperature starts and stops of indoor units after overcooling. Therefore, this embodiment provides a control method for adjusting the target evaporating temperature based on changes in the indoor set temperature and the actual indoor and outdoor ambient temperatures. This allows the evaporating temperature to change in response to real-time heat load changes, thereby achieving system energy savings and precise room temperature control. The indoor temperature refers to the indoor ambient temperature of the room where the air conditioner is located. The actual evaporating temperature refers to the evaporating temperature of the heat exchanger in the air conditioner. Various data collection methods can be used, which are not limited in this embodiment.

[0094] After entering cooling mode, the air conditioning system continuously monitors the indoor and outdoor ambient temperatures, as well as the actual evaporating temperature of the heat exchanger, during cooling operation. It should be noted that the indoor and outdoor ambient temperatures, as well as the actual evaporating temperature, may change over time, so the air conditioning system periodically updates these values.

[0095] Step S20, after the indoor temperature meets a preset condition, determining an instantaneous capacity requirement of the indoor heat load based on the currently detected indoor and outdoor temperatures, determining a target evaporating temperature based on the instantaneous capacity requirement, and determining an operating frequency and an operation cycle of the compressor in the air conditioner based on the target evaporating temperature and the actual evaporating temperature;

[0096] In this embodiment, the preset condition refers to the entry condition of the control process of this scheme. The specific entry condition of the control process can be set as: the difference between the indoor ambient temperature and the room set temperature (set by the user or the default of the air-conditioning system) is within a certain temperature range, or the difference between the indoor ambient temperature and the room set temperature is a specific temperature difference value, etc.

[0097] Instantaneous capacity demand refers to the capacity demanded by the indoor unit at a given moment in a room. It is derived from the instantaneous cooling load and the sensible heat load to be removed. The instantaneous cooling load is the amount of heat required to be removed from the room to maintain the indoor ambient temperature at a given moment; the sensible heat load to be removed is the cooling load created by the sensible heat required to lower the indoor ambient temperature to the indoor unit's set temperature. The operating cycle is the unit duration of compressor operation corresponding to the target evaporating temperature and the actual evaporating temperature at that moment.

[0098] The target evaporating temperature is the ideal value for the actual evaporating temperature. Because the instantaneous capacity demand may correspond to multiple values ​​depending on the indoor and outdoor ambient temperatures, multiple target evaporating temperature values ​​are determined based on the multiple values ​​of the instantaneous capacity demand. Specifically, the initial value of the target evaporating temperature is determined based on the initial value of the instantaneous capacity demand. Then, the target evaporating temperature is continuously updated and adjusted with each change in the instantaneous capacity demand.

[0099] Specifically, the air-conditioning system detects the indoor ambient temperature in real time and determines whether the current indoor ambient temperature meets the preset conditions. When the air-conditioning system detects that the indoor ambient temperature at a certain moment meets the preset entry conditions (i.e., the above-mentioned preset conditions), it can enter the cooling control process. The air-conditioning system continuously obtains the changes in the indoor and outdoor ambient temperatures, and determines the instantaneous capacity requirements of the heat load corresponding to the indoor environment at different times based on the changes. It should be noted that as time goes by, the indoor and outdoor ambient temperatures and the instantaneous capacity requirements of the indoor environment may also continue to change. The air-conditioning system determines the operating frequency and corresponding action cycle of the compressor based on the currently determined target evaporation temperature and the corresponding actual evaporation temperature, and then controls the compressor to run for several action cycles according to this operating frequency, which can be one action cycle or multiple action cycles.

[0100] Additionally, when the air conditioning system detects that the indoor ambient temperature meets the aforementioned preset conditions, a step can be added to determine whether the compressor is on. If the compressor is on, the system proceeds directly to the subsequent steps. If the compressor is not on, the system first turns it on and controls it to run at a preset initial frequency for a period of time before proceeding to the subsequent steps.

[0101] In step S30, after controlling the compressor to operate at the operating frequency for a number of the operation cycles, if the actual evaporating temperature does not reach the target evaporating temperature at this time, the process returns to the step of determining the instantaneous capacity requirement of the indoor heat load based on the currently detected indoor temperature and outdoor temperature until the air conditioner meets the preset stop condition.

[0102] In this embodiment, the air conditioning system obtains an initial value of the target evaporation temperature based on the initial value of the instantaneous capacity demand. The system then adjusts the operating frequency of the compressor in the system based on the difference between the initial value of the target evaporation temperature and the actual evaporation temperature, and determines a corresponding action cycle. After several action cycles, the system determines whether the actual evaporation temperature at that moment has reached the target evaporation temperature (the values ​​are equal or the difference is within a smaller range). If the air conditioning system detects that the actual evaporation temperature at that moment still has not reached the target evaporation temperature, it is necessary to re-determine the updated value of the instantaneous capacity demand at that moment. Based on the updated value of the instantaneous capacity demand, the updated value of the target evaporation temperature at that moment is determined (i.e., the target evaporation temperature is adjusted). Based on the difference between the updated value of the target evaporation temperature at that moment and the actual evaporation temperature at that moment, the operating frequency of the compressor is adjusted, and a corresponding action cycle is determined. The compressor is controlled to operate at the adjusted frequency for several corresponding action cycles, and this cycle is repeated until the exit condition of the control process (i.e., the stop condition described above) is currently met. The exit condition can be shutting down the air conditioning system or stopping when the temperature reaches a certain level.

[0103] Additionally, it should be noted that, in addition to adjusting the actual evaporating temperature by changing the compressor operating frequency as described above, the internal fan air volume control method can also be used (this can be controlled by speed). The specific value of the internal fan speed can be determined by the air conditioning system based on the target evaporating temperature. The specific determination method can refer to the method for determining the compressor operating frequency as described above, or other methods can be used. In actual implementation, the actual evaporating temperature can be adjusted using either the compressor operating frequency control method or the internal fan air volume control method, or both methods can be combined.

[0104] In this embodiment, after the air conditioner is in cooling operation, the indoor temperature, outdoor temperature and actual evaporating temperature of the air conditioner during operation are detected; after the indoor temperature meets the preset conditions, the instantaneous capacity requirement of the indoor heat load is determined according to the currently detected indoor and outdoor temperatures, the target evaporating temperature is determined according to the instantaneous capacity requirement, and the operating frequency and action cycle of the compressor in the air conditioner are determined based on the target evaporating temperature and the actual evaporating temperature; after controlling the compressor to operate at the operating frequency for several action cycles, if the actual evaporating temperature does not reach the target evaporating temperature at this time, the step of determining the instantaneous capacity requirement of the indoor heat load according to the currently detected indoor and outdoor temperatures is returned to, until the air conditioner meets the preset stop condition. Through the above method, this embodiment continuously detects the changes in indoor and outdoor ambient temperatures after the cooling operation to obtain the instantaneous capacity demand corresponding to the indoor ambient heat load, and continuously updates it over time, so that the air conditioner can determine the indoor heat load in real time; then, the target evaporating temperature at this time is determined according to the instantaneous capacity demand, and it is also continuously updated over time. Finally, the operating frequency of the compressor is adjusted accordingly according to the changing target evaporating temperature so that the actual evaporating temperature can fit the target evaporating temperature, thereby realizing the evaporating temperature control following the changes in the real-time heat load, achieving the effect of precise temperature control in the room, and solving the problem that the existing air conditioning refrigeration method is difficult to achieve precise control of the indoor temperature.

[0105] In addition, since this embodiment adjusts the evaporating temperature in a continuous and stable manner according to the real-time indoor heat load conditions during the entire refrigeration operation adjustment process, it can avoid the large indoor temperature fluctuations caused by the existing refrigeration adjustment method, or the frequent start and stop of the indoor unit after over-cooling, thereby achieving energy saving effects to a large extent.

[0106] Furthermore, based on the above Figure 2 The first embodiment shown in the figure provides a second embodiment of the air conditioning refrigeration control method of the present invention. In this embodiment, step S20 includes:

[0107] Step S21, when the indoor temperature meets a preset condition, determining the initial value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature at that time;

[0108] Step S22 , determining the target evaporation temperature initial value based on the demand initial value, obtaining the temperature difference between the actual evaporation temperature and the temperature initial value at this time, and determining the operation frequency and action cycle based on the temperature difference.

[0109] In this embodiment, upon detecting that the current indoor ambient temperature satisfies the aforementioned preset conditions, the air conditioning system calculates an initial value for the instantaneous capacity demand (i.e., the aforementioned initial demand value) based on the current indoor and outdoor ambient temperatures using a preset calculation method. The air conditioning system then calculates an initial value for the target evaporating temperature (i.e., the aforementioned initial temperature value) based on this initial demand value using a preset calculation method. The air conditioning system then updates the current actual evaporating temperature and determines the temperature difference between the current initial temperature value and the actual evaporating temperature. Based on this temperature difference, the system then determines the compressor operating frequency and the corresponding operating cycle corresponding to this temperature difference through a table lookup.

[0110] Furthermore, step S30 includes:

[0111] Step S31, controlling the compressor to operate at the operating frequency for an operation cycle;

[0112] Step S321: If the actual evaporating temperature does not reach the initial temperature value after one operation cycle, determining a demand update value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature after one operation cycle, and determining a temperature update value of the target evaporating temperature based on the demand update value;

[0113] Step S331, determining a temperature update value of the target evaporation temperature according to the demand update value;

[0114] Step S341, based on the temperature update value, returns to the step of obtaining the temperature difference between the actual evaporating temperature at this time and the initial temperature value, until the actual evaporating temperature reaches the target evaporating temperature, and then determines that the air conditioner meets the preset stop condition.

[0115] In this embodiment, the air conditioning system controls the compressor to operate for one operating cycle at the currently determined operating frequency, and then proceeds to determine whether the actual evaporating temperature has reached the initial value of the target evaporating temperature after one operating cycle. Specifically, the condition for determining whether the actual evaporating temperature has been reached can be that the initial temperature value is the same as the actual evaporating temperature, or that the difference is within a certain smaller range. If the air conditioning system detects that the actual evaporating temperature has not reached the initial temperature value after one operating cycle, the air conditioning system updates the instantaneous capacity demand according to a preset calculation method based on the current indoor and outdoor ambient temperatures to obtain an updated demand value, and then updates the target evaporating temperature accordingly based on this updated demand value to obtain an updated temperature value. The air conditioning system then returns to the above-mentioned steps of obtaining the temperature difference and adjusting the compressor frequency based on the temperature difference based on the updated temperature value until it detects that the current actual evaporating temperature is approaching or equal to the target evaporating temperature, at which point the current control process can be terminated.

[0116] Specifically, the method of looking up the table to determine the operating frequency and the corresponding action cycle is shown in Table 1:

[0117] Conditions (℃) 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 cycle (s) 30 60 120 180 120 90 60

[0118] A and B in the table are both positive numbers, in °C, and can be flexibly set according to actual needs.

[0119] Taking the data in the first, fourth, and sixth columns of the table as an example, if the temperature difference X<-A at this time, the air conditioning system controls the operating frequency of the compressor to decrease by 3Hz, that is, the operating frequency reduced by 3Hz is used as the corrected operating frequency, and the corresponding operation cycle is run for 30s at the operating frequency reduced by 3Hz. If the temperature 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. The corresponding operation cycle is run for 180s according to the current operating frequency, and then it is determined whether the actual evaporation temperature at this time has reached the corresponding target evaporation temperature. If the temperature difference X≥A at this time, the air conditioning system controls the operating frequency of the compressor to increase by 4Hz, that is, the operating frequency increased by 4Hz is used as the corrected operating frequency, and the corresponding operation cycle is run for 60s at the operating frequency increased by 4Hz. Other situations are similar and will not be described in detail in this embodiment.

[0120] This embodiment first determines the initial values ​​of the instantaneous capacity requirement and the target evaporating temperature, and adjusts the compressor operating frequency and controls the operation of the compressor by looking up a table. When the actual evaporating temperature after operation does not reach the target evaporating temperature, the instantaneous capacity requirement and the target evaporating temperature are promptly updated to continue adjusting the compressor operating frequency. This cycle is repeated, thereby achieving a precise cooling effect in a convenient and efficient manner.

[0121] Furthermore, after step S31, the method further includes:

[0122] Step S322: If the actual evaporation temperature after one action cycle reaches the initial temperature value, determining whether the change value of the indoor temperature within a preset time period after one action cycle is less than a preset change value;

[0123] Step S332: If not, the process returns to the step of determining the demand update value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature after one operation cycle.

[0124] In this embodiment, this step is designed to verify the effectiveness of the cooling effect of adjusting the compressor operating frequency. The preset duration is the length of time over which the cooling effectiveness is verified and can be flexibly set based on actual needs. The preset change value is the change threshold used to determine the cooling effectiveness and can also be flexibly set based on actual needs.

[0125] After the air conditioning system enters cooling mode, it will monitor the change in indoor temperature over a preset period of time. Therefore, after the air conditioning system controls the compressor to run for one cycle at the adjusted operating frequency, it will determine whether the change in indoor temperature over the most recent preset period of time is less than the preset change value. If the air conditioning system detects that the change is less than the preset change value, it indicates that the cooling effect is inadequate and the instantaneous capacity requirement of the indoor environment needs to be re-determined. The process will then return to the process of re-determining the instantaneous capacity requirement.

[0126] This embodiment promptly detects the change in indoor temperature within a preset time period after each action cycle is completed, so as to promptly determine whether the current cooling operation based on the compressor is effective. If it is not effective, the current instantaneous capacity requirement needs to be re-determined. If it is effective, the subsequent process can be entered, thereby ensuring that the overall cooling control process can be carried out effectively.

[0127] Furthermore, before step S20, the method further includes:

[0128] Determine the set temperature;

[0129] After step S322, the following steps are included:

[0130] Step A1: If yes, determine whether the indoor temperature is within the temperature control range determined by the set temperature after one action cycle;

[0131] Step A2: If yes, return to the step of determining the demand update value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature after one action cycle.

[0132] In this embodiment, the set temperature refers to the indoor cooling target value of the air conditioning system. This value can be specified by the user or automatically selected by the system as a default value. The temperature control range is determined by the set temperature and a smaller temperature value. If the set temperature is T s Indicates that a smaller temperature value is represented by ΔT, then the temperature control range can be expressed as (T s -ΔT, T s +ΔT).

[0133] The air conditioning system determines whether the indoor ambient temperature after one operation cycle is within the temperature control range. If the indoor ambient temperature after one operation cycle is still within the temperature control cycle, it means that the cooling effect at this time still does not meet the expectations, and the instantaneous capacity requirement of the indoor environment needs to be re-determined, and the process of re-determining the instantaneous capacity requirement is returned.

[0134] After determining that the current cooling operation is effective, this embodiment continues to determine whether the cooling range is too large. If the cooling range is too large, resulting in a large deviation between the indoor ambient temperature and the set temperature, it is necessary to re-determine the instantaneous capacity demand to adjust the cooling range. If the cooling range is within the allowable range, so that the indoor ambient temperature does not deviate from the set temperature, the subsequent control process can be continued, thereby further improving the accuracy of the cooling control of the air-conditioning system.

[0135] Furthermore, after step A1, the method further includes:

[0136] Step B1: if not, determining the demand update value according to the indoor temperature and the outdoor temperature after one of the action cycles, and determining the temperature update value based on the demand update value;

[0137] Step B2, increasing or decreasing the temperature update value according to the magnitude relationship between the indoor temperature and the set temperature after one of the operation cycles, to obtain a temperature correction value of the target evaporating temperature;

[0138] Step B3: returning to the step of obtaining the temperature difference between the actual evaporation temperature and the initial temperature value based on the temperature correction value, until the actual evaporation temperature reaches the target evaporation temperature.

[0139] In this embodiment, if the air-conditioning system determines that the indoor ambient temperature after one action cycle is outside this temperature control range, it still determines the demand update value based on the indoor and outdoor ambient temperatures after one action cycle, and determines whether to increase or decrease the temperature update value based on the relationship between the indoor ambient temperature after one action cycle and the set temperature, and uses the increased or decreased temperature update value as the temperature correction value.

[0140] Specifically, if the difference between the indoor ambient temperature after an action cycle and the set temperature is greater than a preset threshold (a positive number, which can be flexibly set according to actual needs), the temperature update value is reduced by 1 degree Celsius; if the difference between the indoor ambient temperature after an action cycle and the set temperature is less than a negative number of a preset threshold, the temperature update threshold is increased by 1 degree Celsius.

[0141] The air conditioning system returns to the steps of executing temperature difference determination and adjusting the compressor operating frequency according to the currently obtained temperature correction value until the current actual evaporating temperature reaches the corresponding target evaporating temperature.

[0142] It should be noted that when the air-conditioning system needs to determine and update the instantaneous demand capacity and target evaporating temperature multiple times, the adjustment effect of the temperature update value can be adjusted according to the relationship between the indoor temperature and the set temperature without clearing the accumulation.

[0143] As a specific embodiment, Figure 3 shown.

[0144] Step 1: After starting up, the air conditioning system enters cooling mode. It determines the set temperature in cooling mode based on user-specified or default values, and begins detecting the room and outdoor ambient temperatures to calculate the current instantaneous capacity requirement.

[0145] Step 2: The air conditioning system calculates the current target evaporation temperature T 2.target ;

[0146] Step 3: The air conditioning system queries the pre-stored compressor frequency control table to determine the frequency adjustment value and action cycle. After adjusting the frequency, it runs an action cycle. According to the average temperature T2 of the middle part of the indoor unit heat exchanger and the target evaporation temperature T 2.target The difference X is used to look up the table to adjust the operating frequency of the compressor, and the compressor is controlled to run an action cycle according to the adjusted frequency.

[0147] Step 4: The air conditioning system determines whether the actual evaporation temperature reaches the target evaporation temperature (|T2-T 2.target |<ΔT2), if yes, go to the next step; if not, go back to the first step;

[0148] Step 5: The air conditioning system determines whether the room temperature change value is less than ΔT1 degrees for a continuous Δt time. If so, it executes the next step; if not, it returns to the first step.

[0149] Step 6: The air conditioning system determines whether the room temperature is within the temperature control range (T s -ΔT, T s +ΔT), if yes, return to the first step; if not, execute the next step;

[0150] Step 7: The air conditioning system determines whether the difference between the room temperature at this time and the set temperature is greater than the preset temperature difference (T1-T S>ΔT), if the difference between the room temperature at this time and the set temperature is greater than the temperature difference, the air conditioning system will reduce k2 by 1°C and return to step 1; if the difference between the room temperature at this time and the set temperature is less than the negative of the temperature difference (T1-T S <-ΔT), increase k2 by 1°C and return to the first step, where k2 refers to the real-time correction parameter of the target evaporating temperature. For example, if the difference between the target evaporating temperature before and after a correction is +1, then k2 is +1.

[0151] This embodiment determines the relationship between the indoor ambient temperature and the set temperature after each action cycle is completed, and adjusts the adjustment range of the target evaporating temperature in this round accordingly based on the relationship, thereby controlling the indoor ambient temperature to be closer to the set temperature after each action cycle is completed, thereby further improving the indoor temperature control accuracy.

[0152] Furthermore, based on the above second embodiment, a third embodiment of the air conditioning refrigeration control method of the present invention is proposed. In this embodiment, step S21 includes:

[0153] Step S211, obtaining environmental information corresponding to the air conditioner, and obtaining an instantaneous cooling load based on the environmental information, the indoor temperature and outdoor temperature at this time, and preset parameters;

[0154] Step S212, obtaining the sensible heat load to be removed based on the indoor temperature and the set temperature;

[0155] Step S213 : Add the instantaneous cooling load and the sensible heat load to be removed to obtain the initial demand value.

[0156] In this embodiment, the environmental information may include room type information (such as room area, window area, wall area, and room orientation), region information, and weather information. Region information refers to the region where the air conditioner is located. For example, within China, the region information may include northern China, southern China, southern China, or central China. The regional classification criteria can be flexibly set based on actual needs. Weather information refers to the current weather information in the environment where the air conditioner is located, which may include sunny, cloudy, or rainy weather.

[0157] Instantaneous cooling load refers to the amount of heat that needs to be removed from the room to maintain the indoor ambient temperature at a given moment. The sensible heat load to be removed refers to the cooling load caused by the sensible heat required to lower the indoor ambient temperature to the indoor unit's set temperature. The instantaneous cooling load can be obtained by querying a database. The air conditioning system can calculate the instantaneous indoor cooling load (including roof load, exterior wall load, window heat transfer load, and window solar load, etc.) by combining information about the room's layout, orientation, and region. Alternatively, the air conditioning system can directly use a default value. The air conditioning system can use a universal default value for the instantaneous cooling load or a default value for the current time period (e.g., one month) as the current instantaneous indoor cooling load. Alternatively, the air conditioning system can calculate the instantaneous cooling load using a specific formula. Users can enter information about the room, orientation, window area, and region and send it to the air conditioning system. Based on this information and the current weather information for the region, the air conditioning system calculates the instantaneous cooling load for the room using a preset formula.

[0158] The instantaneous capacity requirement is determined by the instantaneous cooling load and the sensible heat load to be removed, and is calculated by the following formula.

[0159] Q req =Q load +Q sensible

[0160] Among them, Q load Indicates instantaneous cooling load in kW.

[0161] As a specific implementation, the instantaneous cooling load can be calculated according to the following formula.

[0162] Q load =f(K wall , K floor ,L,H,T0,T1,T4),

[0163] Among them, K wall represents the overall heat transfer coefficient of the wall, which can be taken as 1.95W / (m 2 ·K); K floor The total heat transfer coefficient of the roof and floor can be taken as 3.13W / (m 2 K); L represents the side length of the standard room where the indoor unit is located (the floor is considered a square). For example, the default length for a 3-HP unit is L = 7m, H = 2.8m; the default length for a 2-HP unit is L = 5.5m, H = 2.8m; and the default length for a 1-HP unit is L = 4m, H = 2.8m.

[0164] As a specific calculation method for the sensible heat load to be removed.

[0165] If Q sensible Indicates the sensible heat load to be removed, in kW, T1 indicates the indoor ambient temperature, Ts represents the set temperature, the calculation formula is:

[0166]

[0167] Where m represents the mass of air in a standard room, in kg; C p represents the specific heat capacity of air in a standard room, usually taken as 1.005 kJ / (kg·k); τ represents the time constant, usually taken as 100 s.

[0168] This embodiment provides a method for calculating the instantaneous cooling load, the sensible heat load to be removed, and the instantaneous capacity demand, and combines multi-dimensional information corresponding to the environment in which the air-conditioning system is located (room type information, weather information, regional information, etc.) and indoor and outdoor temperatures to obtain the instantaneous capacity demand. This ensures that the instantaneous capacity demand calculated by the air-conditioning system based on this method can truly meet the actual operating environment of the air-conditioning. By adding the value obtained by adding the instantaneous cooling load and the sensible heat load to be removed as the corresponding instantaneous capacity demand value, the instantaneous capacity demand calculated by the air-conditioning system is made more accurate, thereby improving the accuracy of the cooling control of the air-conditioning system.

[0169] Furthermore, before step S20, the method further includes:

[0170] Step C1, determining whether the difference between the indoor temperature and the set temperature is less than a preset temperature difference threshold;

[0171] Step C2: If yes, determine whether the indoor temperature meets the preset condition.

[0172] In this embodiment, the preset condition refers to whether the difference between the set temperature and the indoor ambient temperature is less than a preset temperature difference threshold. The air conditioning system monitors the indoor ambient temperature in real time after entering cooling mode. If, at a given moment, the difference between the indoor ambient temperature and the set temperature is less than the preset temperature difference threshold, the preset condition is determined to be met, and the subsequent control process begins.

[0173] This embodiment uses the difference between the indoor temperature and the set temperature being less than a preset temperature difference threshold as an entry condition for the cooling control process, thereby avoiding the problem of insignificant cooling effect caused by the above-mentioned cooling control process when the difference between the two is too large, thereby being able to more effectively and accurately control the temperature in situations with smaller temperature differences.

[0174] Furthermore, step S22 includes:

[0175] Step S221 , obtaining the rated power of the air conditioner, the initial demand value, and a calculation result of the indoor temperature and the outdoor temperature under a preset functional relationship as the initial temperature value.

[0176] In this embodiment, if T 2.target represents the target evaporation temperature, and the target evaporation temperature is calculated as follows:

[0177] T 2.target =a*f(Q req ,Q rated ,T1,T4),

[0178] Where a is a constant, T 2.target Indicates the target evaporation temperature in °C; Q req Indicates instantaneous capacity demand in kW; Q rated It indicates the rated nominal capacity of the indoor unit (also known as the rated power mentioned above), in kW; T1 indicates the indoor ambient temperature, in °C; T4 indicates the outdoor ambient temperature, in °C.

[0179] like Figure 4 As shown, the present invention also provides an air conditioning refrigeration control device, the air conditioning refrigeration control device comprising:

[0180] The cooling temperature acquisition module 10 is used to detect the indoor temperature, outdoor temperature and actual evaporation temperature of the air conditioner during operation after the air conditioner is in cooling operation;

[0181] an instantaneous demand determination module 20 for determining, after the indoor temperature satisfies a preset condition, an instantaneous capacity demand of the indoor heat load based on the currently detected indoor and outdoor temperatures, determining a target evaporating temperature based on the instantaneous capacity demand, and determining an operating frequency and an operation cycle of the compressor in the air conditioner based on the target evaporating temperature and the actual evaporating temperature;

[0182] The cooling operation control module 30 is used to control the compressor to operate at the operating frequency for several action cycles. If the actual evaporating temperature does not reach the target evaporating temperature at this time, it returns to the step of determining the instantaneous capacity requirement of the indoor heat load based on the currently detected indoor temperature and outdoor temperature until the air conditioner meets the preset stop condition.

[0183] The invention also provides an air conditioner.

[0184] The air conditioner includes a processor, a memory, and an air conditioning and refrigeration control program stored in the memory and executable on the processor, wherein when the air conditioning and refrigeration control program is executed by the processor, the steps of the air conditioning and refrigeration control method described above are implemented.

[0185] The method implemented when the air conditioning and refrigeration control program is executed can refer to the various embodiments of the air conditioning and refrigeration control method of the present invention, and will not be described in detail here.

[0186] The present invention also provides a computer-readable storage medium.

[0187] The computer-readable storage medium of the present invention stores an air-conditioning and refrigeration control program, and when the air-conditioning and refrigeration control program is executed by a processor, the steps of the air-conditioning and refrigeration control method described above are implemented.

[0188] The method implemented when the air conditioning and refrigeration control program is executed can refer to the various embodiments of the air conditioning and refrigeration control method of the present invention, and will not be described in detail here.

[0189] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the air-conditioning and refrigeration control method described above are implemented.

[0190] The method implemented when the computer program is executed can refer to the various embodiments of the air conditioning and refrigeration control method of the present invention, and will not be described in detail here.

[0191] It should be noted that, in this document, relational terms such as first and second, etc., are used solely to distinguish one entity / operation / object from another, and do not necessarily require or imply any actual relationship or order between these entities / operations / objects. Terms such as "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or system comprising such elements. The device embodiments are described briefly because they are generally similar to the method embodiments. For relevant details, please refer to the 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 separate. Some or all of the modules described herein may be selected to achieve the objectives of the present invention as needed. Persons of ordinary skill in the art can understand and implement the present invention without inventive effort.

[0192] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0193] Through the above description of the embodiments, those skilled in the art will clearly understand that the above-mentioned embodiments and methods can be implemented using software and a necessary general-purpose hardware platform. Of course, hardware can also be used, but in many cases, the former is a more preferred embodiment. Based on this understanding, the technical solution of the present invention, or the portion 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, a magnetic disk, or an optical disk) as described above and includes a number of instructions for causing an air conditioner to execute the methods described in each embodiment of the present invention.

[0194] The above are only some embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An air conditioning refrigeration control method, characterized in that: The air conditioning refrigeration control method comprises: After the air conditioner is in cooling operation, detecting the indoor temperature, outdoor temperature and actual evaporation temperature of the air conditioner during operation; Determine the set temperature; After the indoor temperature meets a preset condition, determining an instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature, determining a target evaporating temperature according to the instantaneous capacity requirement, and determining an operating frequency and an operation cycle of a compressor in the air conditioner based on the target evaporating temperature and the actual evaporating temperature, including: When the indoor temperature meets a preset condition, determining an initial value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature at that time; determining an initial temperature value of the target evaporation temperature based on the initial demand value, obtaining a temperature difference between the actual evaporation temperature and the initial temperature value, and determining the operating frequency and action cycle based on the temperature difference; After controlling the compressor to operate at the operating frequency for a number of the operation cycles, if the actual evaporating temperature does not reach the target evaporating temperature, returning to the step of determining the instantaneous capacity requirement of the indoor heat load based on the currently detected indoor and outdoor temperatures until the air conditioner meets a preset stop condition; The step of determining the initial value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature at this time includes: Acquiring environmental information corresponding to the air conditioner, and obtaining an instantaneous cooling load based on the environmental information, the indoor temperature and outdoor temperature at this time, and preset parameters; Obtaining the sensible heat load to be removed based on the indoor temperature and the set temperature; Adding the instantaneous cooling load and the sensible heat load to be removed to obtain the initial demand value; The step of determining the initial temperature value of the target evaporation temperature based on the initial demand value includes: The rated power of the air conditioner, the initial demand value, and a calculation result of the indoor temperature and the outdoor temperature under a preset functional relationship are obtained as the initial temperature value.

2. The air conditioning refrigeration control method according to claim 1, wherein: The step of controlling the compressor to operate at the operating frequency for a plurality of the operation cycles, if the actual evaporating temperature does not reach the target evaporating temperature, returning to the step of determining the instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature until the air conditioner meets the preset stop condition includes: Controlling the compressor to operate at the operating frequency for the operation cycle; If the actual evaporation temperature does not reach the initial temperature value after one action cycle, determining an updated value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature after one action cycle; determining a temperature update value of the target evaporation temperature according to the demand update value; The step of obtaining the temperature difference between the actual evaporating temperature and the initial temperature value is returned based on the temperature update value until the actual evaporating temperature reaches the target evaporating temperature, and it is determined that the air conditioner meets the preset stop condition.

3. The air conditioning refrigeration control method according to claim 2, wherein: After the step of controlling the compressor to operate at the operating frequency for one action cycle, the method further includes: If the actual evaporation temperature after one of the action cycles reaches the initial temperature value, determining whether a change value of the indoor temperature within a preset time period after one of the action cycles is less than a preset change value; If not, the process returns to the step of determining the demand update value of the instantaneous capacity demand according to the indoor temperature and the outdoor temperature after one operation cycle.

4. The air conditioning refrigeration control method according to claim 3, wherein: After the step of determining whether the change value of the indoor temperature within the preset time period after an action cycle is less than the preset change value, the method further includes: If so, determining whether the indoor temperature is within the temperature control range determined by the set temperature after one of the action cycles; If so, the process returns to the step of determining the demand update value of the instantaneous capacity demand based on the indoor temperature and the outdoor temperature after one operation cycle.

5. The air conditioning refrigeration control method according to claim 4, characterized in that: After the step of determining whether the indoor temperature after one of the action cycles is within the temperature control range determined by the set temperature, the method further includes: If not, determining the demand update value according to the indoor temperature and the outdoor temperature after one of the action cycles, and determining the temperature update value based on the demand update value; increasing or decreasing the temperature update value according to the magnitude relationship between the indoor temperature and the set temperature after an action cycle to obtain a temperature correction value of the target evaporating temperature; The step of obtaining the temperature difference between the actual evaporation temperature and the initial temperature value is returned based on the temperature correction value until the actual evaporation temperature reaches the target evaporation temperature.

6. The air conditioning refrigeration control method according to claim 4, wherein: Before the step of determining the instantaneous capacity requirement of the indoor heat load according to the currently detected indoor temperature and outdoor temperature after the indoor temperature meets the preset condition, the method further includes: Determining whether the difference between the indoor temperature and the set temperature is less than a preset temperature difference threshold; If so, it is determined that the indoor temperature meets the preset condition.

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

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores an air conditioning and refrigeration control program, and when the air conditioning and refrigeration control program is executed by the processor, the steps of the air conditioning and refrigeration control method according to any one of claims 1 to 6 are implemented.

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