Compensation method, device and equipment for refrigerating capacity of air conditioner and medium

Abstract

The invention discloses a compensation method, device and equipment for the refrigerating capacity of an air conditioner and a medium. The method comprises the steps that after the air conditioner is started, operation parameters and refrigerating capacity of the air conditioner are detected in real time, and whether a compressor operates in a frequency reduction mode or not is judged according to the operation parameters; if the compressor operates under the reduced frequency, data fitting is conducted according to the historical operating parameters, and a first fitting relation between the operating frequency of the compressor and the refrigerating capacity and a second fitting relation between the rotating speed of an inner fan and the refrigerating capacity are obtained; the current to-be-compensated refrigerating capacity is determined according to the current compressor operation frequency through the first fitting relation, and the to-be-increased rotating speed of an inner fan is obtained through rotating speed calculation according to the to-be-compensated refrigerating capacity and the second fitting relation; and the inner fan is controlled to operate according to the rotating speed to be increased so as to compensate the refrigeration energy efficiency. By means of the method, the problem that in the prior art, the refrigerating capacity lost during frequency reduction of the compressor cannot be compensated can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner management, and particularly to a method, device, equipment and medium for compensating the refrigeration capacity of an air conditioner. Background Art

[0002] With the continuous development of technology, air conditioners have become essential electrical appliances in people's lives. In existing air conditioner systems, the adjustment of the operating frequency of the compressor has an important impact on the refrigeration capacity and energy efficiency, but there are still obvious defects. In terms of the regulation of the compressor operating frequency, although reducing the frequency can improve energy efficiency, the refrigerating capacity will correspondingly decrease, affecting the overall refrigeration capacity of the air conditioner. This contradiction is particularly obvious in situations where a low-temperature environment needs to be maintained for a long time. Moreover, the adjustment of the external fan speed not only affects the heat dissipation effect but also easily generates resonance with the compressor, resulting in system instability and noise problems. Therefore, the method of compensating the refrigeration capacity by adjusting the external fan speed is limited, making it impossible to effectively compensate for the refrigeration capacity lost when the compressor frequency is reduced in the prior art, thereby restricting the overall performance and user experience of the air conditioner system. Summary of the Invention

[0003] Embodiments of the present invention provide a method, device, equipment and medium for compensating the refrigeration capacity of an air conditioner, aiming to solve the problem in the prior art that the refrigeration capacity lost when the compressor frequency is reduced cannot be effectively compensated.

[0004] In a first aspect, embodiments of the present invention provide a method for compensating the refrigeration capacity of an air conditioner, which includes: when the air conditioner is turned on, the operating parameters and refrigeration capacity of the air conditioner are detected in real time, and it is judged whether the compressor is operating at a reduced frequency according to the operating parameters; if the compressor is operating at a reduced frequency, data fitting is performed according to historical operating parameters to respectively obtain a first fitting relationship between the compressor operating frequency and the refrigeration capacity, and a second fitting relationship between the internal fan speed and the refrigeration capacity; the current refrigeration capacity to be compensated is determined by the first fitting relationship through the current compressor operating frequency, and the internal fan's to-be-increased speed is obtained by calculating the speed according to the to-be-compensated refrigeration capacity and the second fitting relationship; the internal fan is controlled to operate according to the to-be-increased speed to compensate for the refrigeration energy efficiency.

[0005] In a second aspect, an embodiment of the present invention further provides a compensation device for the refrigeration capacity of an air conditioner, which includes: a judgment unit, configured to detect the operating parameters and refrigeration capacity of the air conditioner in real time after the air conditioner is turned on, and judge whether the compressor operates at a reduced frequency according to the operating parameters; a fitting unit, configured to perform data fitting according to historical operating parameters if the compressor operates at a reduced frequency, and respectively obtain a first fitting relationship between the operating frequency of the compressor and the refrigeration capacity, and a second fitting relationship between the rotational speed of the internal fan and the refrigeration capacity; a calculation unit, configured to determine the current refrigeration capacity to be compensated through the first fitting relationship based on the current operating frequency of the compressor, and calculate the rotational speed to be increased of the internal fan according to the refrigeration capacity to be compensated and the second fitting relationship; a compensation unit, configured to control the operation of the internal fan according to the rotational speed to be increased to compensate the refrigeration energy efficiency.

[0006] In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory and a processor, and a computer program is stored on the memory, and when the processor executes the computer program, the above method is implemented.

[0007] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, and the storage medium stores a computer program, and the computer program includes program instructions, and when the program instructions are executed by a processor, the above method can be implemented.

[0008] An embodiment of the present invention provides a method, device, equipment and medium for compensating the refrigeration capacity of an air conditioner. Among them, the method includes: detecting the operating parameters and refrigeration capacity of the air conditioner in real time after the air conditioner is turned on, and judging whether the compressor operates at a reduced frequency according to the operating parameters; if the compressor operates at a reduced frequency, performing data fitting according to historical operating parameters, and respectively obtaining a first fitting relationship between the operating frequency of the compressor and the refrigeration capacity, and a second fitting relationship between the rotational speed of the internal fan and the refrigeration capacity; determining the current refrigeration capacity to be compensated through the first fitting relationship based on the current operating frequency of the compressor, and calculating the rotational speed to be increased of the internal fan according to the refrigeration capacity to be compensated and the second fitting relationship; controlling the operation of the internal fan according to the rotational speed to be increased to compensate the refrigeration energy efficiency. By monitoring and recording the operating parameters of the air conditioner in real time, the embodiment of the present invention timely performs data fitting according to the recorded historical data when it is detected that the air conditioner operates at a reduced frequency, and obtains a first fitting relationship between the operating frequency of the compressor and the refrigeration capacity, and a second fitting relationship between the rotational speed of the internal fan and the refrigeration capacity, so as to facilitate data calculation according to the accurate fitting relationship. Based on the accurate fitting relationship, the refrigeration capacity lost after the compressor frequency reduction is determined, and further the compensation amount of the refrigeration capacity before and after the rotational speed increase of the internal fan is determined, so as to determine the specific rotational speed to be increased of the internal fan, thereby effectively compensating the refrigeration capacity loss caused by the compressor frequency reduction, and further improving the overall performance and user experience of the air conditioner system. Description of the Drawings

[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0010] Figure 1 It is a schematic flowchart of the compensation method for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0011] Figure 2 It is a schematic sub-flowchart of the compensation method for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0012] Figure 3 It is a schematic sub-flowchart of the compensation method for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0013] Figure 4 It is a schematic sub-flowchart of the compensation method for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0014] Figure 5 It is a schematic sub-flowchart of the compensation method for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0015] Figure 6 It is a schematic sub-flowchart of the compensation method for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0016] Figure 7 It is a schematic block diagram of the compensation device for the air-conditioning refrigeration capacity provided by the embodiments of the present invention;

[0017] Figure 8 It is a schematic block diagram of the computer device provided by the embodiments of the present invention. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, rather than all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0020] It should also be understood that the terms used in the specification of the present invention are merely for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0021] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0022] Please refer to Figure 1 , Figure 1 which is a schematic flow chart of the compensation method for the air-conditioning refrigerating capacity provided by the embodiment of the present invention. The compensation method for the air-conditioning refrigerating capacity in this embodiment can be applied to an air conditioner. Among them, the air conditioner has an indoor unit and an outdoor unit. The indoor unit has devices such as an indoor fan and a control system for controlling the operation of the air conditioner. The control system includes a control module, a judgment module, a calculation module, a collection module, etc. Among them, the physical forms of the control module, the judgment module, the calculation module, and the collection module can be independent of each other, or can be functional units integrated on a physical module. The control system of the air conditioner includes a memory and a processor, as well as a computer program stored in the memory and operable on the processor. This computer program can complete the functions of the above-mentioned control module, judgment module, and collection module. Through the control system of the indoor unit, the rotation speed of the indoor fan can be controlled to effectively compensate for the loss of refrigerating capacity caused by the compressor frequency reduction, thereby improving the overall performance and user experience of the air-conditioning system.

[0023] Figure 1 which is a schematic flow chart of the compensation method for the air-conditioning refrigerating capacity provided by the embodiment of the present invention. As shown in the figure, the method includes the following steps S110-S140.

[0024] S110. After the air conditioner is turned on, the operating parameters and refrigerating capacity of the air conditioner are detected in real time, and it is judged whether the compressor operates at a reduced frequency according to the operating parameters.

[0025] In this embodiment, the operating parameters are key parameters during the operation of the air conditioner, including but not limited to the rotational speed of the compressor, the temperatures of the condenser and evaporator, the rotational speed of the indoor fan, the temperature difference between the indoor and outdoor environments, the wind speed, and the current and voltage. These parameters together reflect the actual operating state of the air conditioner in the current working environment. While these operating parameters are being detected in real time, the air conditioning system will also evaluate the refrigeration capacity of the air conditioner according to preset algorithms and models. For example, the real-time refrigeration capacity of the air conditioner is calculated using thermodynamic formulas or empirical formulas based on the collected data, and the calculation method of the refrigeration capacity is not limited. The refrigeration capacity refers to the amount of heat that the air conditioner can remove from the room per unit time. The compressor is the core component of the air conditioning system, and its operating frequency directly affects the circulation speed of the refrigerant and the refrigeration efficiency. Under normal circumstances, the compressor operates at the designed frequency to provide the best refrigeration effect. However, in certain specific situations, such as when the outdoor temperature is too high, the indoor load is low, or to protect the compressor from overheating and damage, the control system may issue an instruction to reduce the operating frequency of the compressor, that is, enter the frequency reduction operation state. After the air conditioner is turned on and runs to a stable state, the key operating parameters and refrigeration capacity of the air conditioner can be detected through devices such as sensors set, and it can be determined whether the compressor is operating at a reduced frequency according to the operating parameters. For example, it can be determined whether the compressor is operating at a reduced frequency according to the rotational speed of the compressor in the operating parameters, or it can be determined according to the overall data situation. By judging whether the air conditioner compressor is operating at a reduced frequency based on the real-time collected data when the air conditioner runs to a stable state, it is convenient to compensate in time for the lost refrigeration capacity after the frequency reduction.

[0026] In one embodiment, as Figure 2 shown, step S110 further includes steps S111 - S112.

[0027] S111. Compare the operating frequency of the compressor monitored in real time with the preset normal operating frequency;

[0028] S112. If the current operating frequency of the compressor is less than the preset normal operating frequency, it is determined that the compressor is operating at a reduced frequency.

[0029] In this embodiment, the air conditioning system is internally equipped with sensors, such as frequency sensors, which can capture the operating frequency of the compressor in real time. The frequency sensor converts the captured frequency signal into an electrical signal and transmits it to the processor of the control system. The processor processes the received electrical signal to obtain the real-time operating frequency of the compressor. The preset normal operating frequency is comprehensively determined based on factors such as the design parameters of the air conditioning system, the usage environment, and the refrigeration demand. This frequency value serves as the standard for judging the operating state of the compressor. Compare the real-time monitored operating frequency of the compressor with the preset normal operating frequency. For example, if the frequency sensor captures the operating frequency of the compressor as 55 Hz and the preset normal operating frequency is 60 Hz, compare the real-time monitored 55 Hz with the preset 60 Hz. Since 55 Hz is less than 60 Hz, the processor determines that the real-time monitored frequency is less than the preset frequency, and thus determines that the compressor is operating at a reduced frequency. By monitoring the operating frequency of the compressor in real time and comparing it with the preset normal operating frequency, the air conditioning system can accurately judge the operating state of the compressor, thereby ensuring the stable operation and efficient refrigeration of the system.

[0030] S120. If the compressor operates at a reduced frequency, perform data fitting based on historical operating parameters to respectively obtain the first fitting relationship between the compressor operating frequency and the refrigeration capacity, and the second fitting relationship between the internal fan speed and the refrigeration capacity.

[0031] In this embodiment, the data fitting is a mathematical method used to approximate an unknown functional relationship through a set of known data points. Whenever the air conditioner is turned on and after it operates stably, monitor and record the historical operating data, including the compressor operating frequency, the internal fan speed, and the corresponding refrigeration capacity, and establish a corresponding historical database. If the compressor operates at a reduced frequency, perform data fitting based on the historical operating parameters. Specifically, after the compressor frequency reduction, use these data points for data fitting. Methods such as linear fitting, polynomial fitting, and exponential fitting can be selected, and the specific selection depends on the distribution and characteristics of the data. After the fitting is completed, a functional relationship is obtained, that is, the first fitting relationship between the compressor operating frequency and the refrigeration capacity. This relationship can be used to predict the refrigeration capacity of the compressor at a given operating frequency. Similarly, the second fitting relationship (functional relationship) between the internal fan speed and the refrigeration capacity is obtained. This relationship can be used to predict the contribution of the internal fan to the refrigeration capacity at a given speed. By performing data fitting according to the historical operating parameters, when the compressor operates at a reduced frequency, the refrigeration capacity of the system can be predicted based on the current operating frequency and the internal fan speed, and the operating parameters of the system can be adjusted accordingly to maintain the best refrigeration effect.

[0032] In one embodiment, as Figure 3 shown, the step S120 further includes steps S121 - S122.

[0033] S121. Fit the compressor operating frequency, the internal fan speed recorded in the historical operating parameters, and the refrigeration capacity at the same moment through a preset fitting function;

[0034] S122. Determine the first fitting relationship and the second fitting relationship according to the data fitting result.

[0035] In this embodiment, the historical operating parameters are recorded according to the time stamp so that the values of each parameter at the same moment can be accurately corresponding during subsequent analysis. The preset fitting function is the corresponding fitting function selected according to the law presented by the current data. The fitting functions include non-linear functions, polynomial functions, exponential functions, etc. Fit the compressor operating frequency, the internal fan speed recorded in the historical operating parameters, and the refrigeration capacity at the same moment through a preset fitting function. Specifically, in this embodiment, 1 compressor operating frequency only corresponds to 1 refrigeration capacity, and the compressor operating frequency is proportional to the refrigeration capacity. The greater the compressor operating frequency, the greater the refrigeration capacity of the air conditioner. For example, the fitting formula of the first fitting relationship between the compressor operating frequency and the air conditioner refrigeration capacity can be: Q = A1exp(B1f) + A2exp(B2f) + C, where Q is the refrigeration capacity, f is the compressor operating frequency, exp represents the relationship between the compressor operating frequency and the air conditioner refrigeration capacity as an exponential function, and exp is represented as e x in mathematics, where e is the base of the natural logarithm, approximately equal to 2.71828. A1, A2, B1, and B2 are proportionality coefficients, and C is a constant. The proportionality coefficients A1, A2, B1, B2 and the constant C of the fitting formula can be determined in the following way: when the compressor operating frequency f1 is 30 Hz, the refrigeration capacity Q1 of the air conditioner at this time is 6099.03 W, when the compressor operating frequency f2 is 40 Hz, the refrigeration capacity Q2 of the air conditioner at this time is 7556.8 W, when the compressor operating frequency f3 is 60 Hz, the refrigeration capacity Q3 of the air conditioner at this time is 9765.76 W. It is obtained that A1 = -13911.85547, A2 = -2047.35875, B1 = -1 / 47.93037, B2 = -1 / 205.47744, C = 15303.13334. Therefore

[0036] Q = -13911.85547exp((-1 / 47.93037)f) - 2047.35875exp((-1 / 205.47744)f) + 15303.13334. And in this embodiment, 1 internal fan speed only corresponds to 1 refrigeration capacity, and the internal fan speed is proportional to the refrigeration capacity. The greater the internal fan speed, the greater the refrigeration capacity of the air conditioner. For example, the fitting formula of the second fitting relationship between the internal fan speed and the air conditioner refrigeration capacity can be: Q = ar b, where Q is the refrigeration capacity, r is the rotational speed of the internal fan, a is the proportionality coefficient, and b is the exponential constant. The proportionality coefficient a and the exponential constant b of the fitting formula can be determined as follows: when the rotational speed r1 of the internal fan is 600 rpm, the refrigeration capacity Q1 of the air conditioner at this time is 9486.02 W; when the rotational speed r2 of the internal fan is 700 rpm, the refrigeration capacity Q2 of the air conditioner at this time is 9765.76 W; when the rotational speed r3 of the internal fan is 800 rpm, the refrigeration capacity Q3 of the air conditioner at this time is 9968.25 W. It is obtained that a = 2005.63222 and b = 0.23559. Therefore, Q = 2005.63222r 0.23559 . After generating the fitting formula, it is applied to the control system of the air conditioner. It should be noted that the above embodiments only provide a method for referring to the fitting formula. Specifically, fitting is performed according to different historical data recorded. The parameters in the fitting formula can also be calculated by referring to the method of the above embodiments, or fitting can be performed using software such as origin. If the latter is selected, the parameters will be directly obtained together with the formula. By performing data fitting based on historical operating parameters, it is convenient to adjust the operating parameters of the system in a timely manner according to the fitting relationship to maintain the best refrigeration effect.

[0037] S130. Determine the current refrigeration capacity to be compensated according to the current operating frequency of the compressor through the first fitting relationship, and calculate and obtain the rotational speed to be increased of the internal fan according to the refrigeration capacity to be compensated and the second fitting relationship.

[0038] In this embodiment, the first fitting relationship describes the relationship between the operating frequency of the compressor and the refrigeration capacity. The second fitting relationship describes the relationship between the rotational speed of the internal fan and the refrigeration capacity. Determining the current refrigeration capacity to be compensated according to the current operating frequency of the compressor through the first fitting relationship specifically means determining the current refrigeration capacity through the first fitting relationship with the current operating frequency of the compressor, and at the same time obtaining the refrigeration capacity when the compressor operates normally. The difference between the two obtained refrigeration capacities is calculated to determine the lost refrigeration capacity after the compressor frequency reduction, that is, the refrigeration capacity to be compensated. Calculating and obtaining the rotational speed to be increased of the internal fan according to the refrigeration capacity to be compensated and the second fitting relationship specifically means that in order to compensate for the refrigeration capacity, it is necessary to adjust the rotational speed of the internal fan. In this embodiment, the different refrigeration capacities generated by the current rotational speed of the internal fan and the rotational speed after the rotational speed of the internal fan is increased by one unit can be determined according to the second fitting relationship, so as to determine the compensation effect of the rotational speed change on the refrigeration capacity. According to the compensation effect, the rotational speed to be increased of the internal fan in the face of the refrigeration capacity to be compensated can be determined. By determining the rotational speed to be increased, the insufficient refrigeration capacity caused by the insufficient operating frequency of the compressor can be compensated, so as to achieve the desired refrigeration effect.

[0039] In one embodiment, asFigure 4 As shown, step S130 further includes steps S131 - S132.

[0040] S131. Obtain the current refrigeration capacity of the compressor and the preset refrigeration capacity through the first fitting relationship between the current operating frequency of the compressor and the preset normal operating frequency.

[0041] S132. Calculate the difference between the refrigeration capacity of the compressor and the preset refrigeration capacity to obtain the refrigeration capacity to be compensated.

[0042] In this embodiment, the preset normal operating frequency is the normal operating frequency of the compressor when the air conditioner is running, which can be determined through daily monitoring or according to the factory settings, or can be comprehensively determined according to factors such as the design parameters of the air conditioning system, the usage environment, and the refrigeration demand. Obtain the current refrigeration capacity of the compressor and the preset refrigeration capacity through the first fitting relationship between the current operating frequency of the compressor and the preset normal operating frequency. Specifically, if the compressor is not operating at a reduced frequency, the air conditioning system continues to operate. If the compressor operates at a reduced frequency, substitute the currently measured operating frequency f' of the compressor and the preset normal operating frequency f into the first fitting relationship to obtain the corresponding refrigeration capacity Q1 of the compressor and the preset refrigeration capacity Q2, that is, obtain the refrigeration capacity before and after the compressor frequency modulation. Calculate the difference between the refrigeration capacity of the compressor and the preset refrigeration capacity to obtain the refrigeration capacity to be compensated. Specifically, the refrigeration capacity to be compensated is Q_loss, Q_loss = Q1 - Q2, that is, the lost refrigeration capacity is equal to the refrigeration capacity of the compressor before frequency modulation minus the refrigeration capacity of the compressor after frequency modulation, and thus it can be obtained how much refrigeration capacity is lost after the compressor operates at a reduced frequency. Among them, the lost refrigeration capacity of the compressor is the refrigeration capacity that needs to be supplemented by adjusting the rotational speed of the internal fan. Obtain the current refrigeration capacity and the preset refrigeration capacity through the first fitting relationship, and calculate the difference to obtain the refrigeration capacity to be compensated, so as to be used for subsequent adjustment of the rotational speed of the internal fan or other refrigeration system parameters to compensate for the insufficient refrigeration capacity.

[0043] In one embodiment, as Figure 5 shown, step S130 further includes steps S133 - S134.

[0044] S133. Input the current rotational speed of the internal fan and the rotational speed of the internal fan after increasing the preset unit rotational speed into the second fitting relationship to obtain the compensated refrigeration capacity for each increase of the preset unit rotational speed.

[0045] S134. Calculate the ratio of the compensated refrigeration capacity to the refrigeration capacity to be compensated to determine the rotational speed to be increased of the internal fan.

[0046] In this embodiment, the preset unit speed is the unit speed increment determined according to the operating conditions of the internal fan. For example, 1 rpm, 10 rpm, 20 rpm, etc. The current internal fan speed and the internal fan speed after increasing the preset unit speed are input into the second fitting relationship to obtain the compensated refrigeration capacity after increasing each preset unit speed. Specifically, the current internal fan speed and the internal fan speed after increasing the preset unit speed are respectively substituted into the second fitting relationship to calculate the corresponding refrigeration capacities, and then the difference between the two refrigeration capacities is calculated to obtain the refrigeration capacity increment after each preset unit speed, that is, the compensated refrigeration capacity. The ratio of the compensated refrigeration capacity to the refrigeration capacity to be compensated is calculated to determine the speed to be increased of the internal fan. Specifically, let the speed to be increased of the internal fan be r_up, then r_up = Q_loss / Q_comp, where Q_comp is the compensated refrigeration capacity after increasing each preset unit speed. By using the second fitting relationship, the current internal fan speed, the preset unit speed increment, and the refrigeration capacity to be compensated to determine the speed to be increased of the internal fan, the speed of the internal fan can be accurately controlled to meet the requirements of the refrigeration system.

[0047] In one embodiment, as Figure 6 shown, step S130 further includes steps S135 - S136.

[0048] S135. Perform formula calculation through a preset refrigeration compensation formula according to the first fitting relationship and the second fitting relationship to obtain the target speed increase ratio;

[0049] S136. Determine the speed to be increased by multiplying the current compressor operating frequency and the current internal fan speed by the target speed increase ratio.

[0050] In this embodiment, the target speed increase ratio is the relational expression between the speed to be increased and the capacity to be compensated determined according to the first fitting relationship and the second fitting relationship. Perform formula calculation through a preset refrigeration compensation formula according to the first fitting relationship and the second fitting relationship. The refrigeration compensation formula is r_up = Q_loss / Q_comp. If the second fitting relationship is Q = ar b , and the preset unit speed is 1 rpm. Then the calculation formula for the compensated refrigeration capacity (Q_comp) is:

[0051]

[0052] Among them, the meanings of the symbols are the same as those of the corresponding symbols above. The specific derivation process can be obtained according to the mathematical relationship and will not be elaborated here. By calculating the ratio of the calculation formulas of Q_loss and Q_compensation, the final target rotational speed increase ratio can be obtained. Inputting the current operating frequency of the compressor and the current operating frequency of the compressor into the target rotational speed increase ratio can obtain the rotational speed to be increased. It should be noted that this step can be carried out after step S134 to facilitate the subsequent rapid calculation of the rotational speed to be increased in the following steps, or it can be carried out alternatively with steps S130 - S134, and no limitation is imposed on this. By directly obtaining the rotational speed to be increased, the lost refrigeration capacity can be compensated, improving the overall performance of the air-conditioning system and the user experience.

[0053] S140. Control the operation of the internal fan according to the rotational speed to be increased to compensate for the refrigeration energy efficiency.

[0054] In this embodiment, the rotational speed to be increased is the rotational speed that the internal fan needs to increase. Controlling the operation of the internal fan according to the rotational speed to be increased to compensate for the refrigeration energy efficiency. Specifically, once the rotational speed to be increased is determined, the control system will send an instruction to the driver or controller of the internal fan. After receiving the instruction, the driver or controller will adjust parameters such as the power frequency, voltage, or current of the internal fan to change the rotational speed of the internal fan. The increase in the rotational speed of the internal fan will increase the air flow velocity, thereby enhancing the heat exchange efficiency and improving the refrigeration energy efficiency. For example, the refrigeration capacity to be compensated is 0.4 kW, the rotational speed that the internal fan needs to increase is 100 rpm, and the current rotational speed of the internal fan is 1000 rpm. Then the control system sends an instruction to the driver of the internal fan, requiring it to increase the rotational speed of the internal fan to 1100 rpm. After receiving the instruction, the driver adjusts the power frequency or voltage of the internal fan to gradually increase the rotational speed of the internal fan to 1100 rpm. Among them, it should be noted that the control method of the present invention can also be applied to other modes of the air conditioner, such as the heating mode or the dehumidification mode of the air conditioner. By controlling the operation of the internal fan according to the rotational speed to be increased to enhance the heat exchange efficiency and improve the refrigeration energy efficiency, the lost refrigeration capacity is compensated, thereby improving the overall performance of the air-conditioning system and the user experience.

[0055] In one embodiment, after step S140, there is also step S1401.

[0056] S1401. Monitor the operating frequency of the compressor in real time. If it is monitored that the compressor runs at a reduced frequency again, determine the rotational speed to be increased according to the operating frequency after the second frequency reduction.

[0057] In this embodiment, after the compressor frequency is reduced and the lost refrigeration capacity is compensated by the speed of the internal fan, the indoor fan operates according to the increased speed. At this time, the operating frequency of the compressor is monitored in real time or detected after a preset time interval (such as 1 minute). If it is monitored that the compressor runs at a reduced frequency again, the speed to be increased is determined according to the operating frequency after the second frequency reduction through the above steps, and the speed of the internal fan is increased according to the speed to be increased for energy compensation until the compressor frequency increases or the air conditioner stops working. By detecting the frequency of the compressor in real time to determine the speed to be increased, the refrigeration capacity compensation can be carried out in a timely manner.

[0058] Figure 7 FIG. 4 is a schematic block diagram of a compensation device 200 for the refrigeration capacity of an air conditioner provided by an embodiment of the present invention. As Figure 7 shown, corresponding to the above compensation method for the refrigeration capacity of the air conditioner, the present invention also provides a compensation device for the refrigeration capacity of the air conditioner. The compensation device for the refrigeration capacity of the air conditioner includes a unit for executing the above compensation method for the refrigeration capacity of the air conditioner, and the device can be configured in terminals such as desktop computers, tablet computers, laptop computers, etc. Specifically, please refer to Figure 7 FIG. 4, the compensation device for the refrigeration capacity of the air conditioner includes a judgment unit 210, a fitting unit 220, a calculation unit 230, and a compensation unit 240.

[0059] The judgment unit 210 is configured to detect the operating parameters and refrigeration capacity of the air conditioner in real time after the air conditioner is turned on, and judge whether the compressor runs at a reduced frequency according to the operating parameters.

[0060] In one embodiment, the judgment unit 210 includes a comparison unit and a determination unit.

[0061] The comparison unit is configured to compare the operating frequency of the compressor monitored in real time with a preset normal operating frequency;

[0062] The determination unit is configured to determine that the compressor runs at a reduced frequency if the current operating frequency of the compressor is less than the preset normal operating frequency.

[0063] The fitting unit 220 is configured to perform data fitting according to historical operating parameters if the compressor runs at a reduced frequency, and respectively obtain a first fitting relationship between the operating frequency of the compressor and the refrigeration capacity, and a second fitting relationship between the speed of the internal fan and the refrigeration capacity.

[0064] In one embodiment, the fitting unit 220 includes a fitting subunit and a determination unit.

[0065] The fitting subunit is configured to perform data fitting on the operating frequency of the compressor, the speed of the internal fan, and the refrigeration capacity recorded in the historical operating parameters at the same moment through a preset fitting function;

[0066] A determination unit, configured to determine the first fitting relationship and the second fitting relationship according to the data fitting result.

[0067] A calculation unit 230, configured to determine the current refrigeration capacity to be compensated of the compressor by the first fitting relationship for the current operating frequency of the compressor, and calculate and obtain the rotational speed to be increased of the internal fan according to the refrigeration capacity to be compensated and the second fitting relationship.

[0068] In one embodiment, the calculation unit 230 includes an acquisition unit and a difference calculation unit.

[0069] The acquisition unit is configured to obtain the current refrigeration capacity of the compressor and the preset refrigeration capacity by the first fitting relationship for the current operating frequency of the compressor and the preset normal operating frequency.

[0070] The difference calculation unit is configured to perform a difference calculation on the refrigeration capacity of the compressor and the preset refrigeration capacity to obtain the refrigeration capacity to be compensated.

[0071] In one embodiment, the calculation unit 230 includes an input unit and a first rotational speed determination unit.

[0072] The input unit is configured to input the current rotational speed of the internal fan and the rotational speed of the internal fan after increasing the preset unit rotational speed into the second fitting relationship to obtain the compensated refrigeration capacity after increasing each preset unit rotational speed.

[0073] The first rotational speed determination unit is configured to perform a ratio calculation on the compensated refrigeration capacity and the refrigeration capacity to be compensated to determine the rotational speed to be increased of the internal fan.

[0074] In one embodiment, the calculation unit 230 includes a ratio determination unit and a second rotational speed determination unit.

[0075] The ratio determination unit is configured to perform a formula calculation through a preset refrigeration compensation formula according to the first fitting relationship and the second fitting relationship to obtain a target rotational speed increase ratio.

[0076] The second rotational speed determination unit is configured to determine the rotational speed to be increased according to the current operating frequency of the compressor and the current rotational speed of the internal fan through the target rotational speed increase ratio.

[0077] A compensation unit 240, configured to control the operation of the internal fan according to the rotational speed to be increased to compensate for the refrigeration energy efficiency.

[0078] In one embodiment, the compensation unit 240 includes a monitoring unit.

[0079] A monitoring unit is configured to monitor the operating frequency of the compressor in real time. If it is detected that the compressor runs at a reduced frequency again, the rotational speed to be increased is determined according to the operating frequency after the second frequency reduction.

[0080] It should be noted that those skilled in the art can clearly understand the specific implementation processes of the above-mentioned air-conditioning refrigeration capacity compensation device 200 and each unit, and can refer to the corresponding descriptions in the foregoing method embodiments. For the sake of convenience and brevity of description, they will not be elaborated herein.

[0081] The above-mentioned air-conditioning refrigeration capacity compensation device can be implemented in the form of a computer program, and the computer program can run on a computer device as shown in Figure 8 the following.

[0082] Please refer to Figure 8 , Figure 8 which is a schematic block diagram of a computer device provided by an embodiment of the present application. The computer device 500 can be a terminal or a server. Among them, the terminal can be an electronic device with a communication function such as a smart phone, a tablet computer, a notebook computer, a desktop computer, a personal digital assistant, and a wearable device. The server can be an independent server or a server cluster composed of multiple servers.

[0083] Referring to Figure 8 , the computer device 500 includes a processor 502, a memory, and a network interface 505 connected through a system bus 501. Among them, the memory can include a non-volatile storage medium 503 and an internal memory 504.

[0084] The non-volatile storage medium 503 can store an operating system 5031 and a computer program 5032. The computer program 5032 includes program instructions, and when the program instructions are executed, the processor 502 can be made to execute a method for compensating the refrigeration capacity of an air conditioner.

[0085] The processor 502 is configured to provide computing and control capabilities to support the operation of the entire computer device 500.

[0086] The internal memory 504 provides an environment for the operation of the computer program 5032 in the non-volatile storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can be made to execute a method for compensating the refrigeration capacity of an air conditioner.

[0087] The network interface 505 is used for network communication with other devices. Those skilled in the art can understand that Figure 8The structure shown is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device 500 to which the solution of this application is applied. Specifically, the computer device 500 may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0088] Among them, the processor 502 is used to run the computer program 5032 stored in the memory to implement the steps of the above method.

[0089] It should be understood that in the embodiments of this application, the processor 502 may be a central processing unit (CPU), and this processor 502 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0090] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program includes program instructions, and the computer program can be stored in a storage medium, and this storage medium is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the embodiments of the above method.

[0091] Therefore, the present invention also provides a storage medium. This storage medium may be a computer-readable storage medium. The storage medium stores a computer program, and the computer program includes program instructions. When the program instructions are executed by the processor, the processor is caused to execute the steps of the above method.

[0092] The storage medium may be a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, an optical disc, or other various computer-readable storage media that can store program codes.

[0093] Those of ordinary skill in the art will appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been generally described in terms of function in the above description. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present invention.

[0094] In several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of each unit is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0095] The steps in the method embodiments of the present invention can be adjusted, combined, and deleted according to actual needs. The units in the device embodiments of the present invention can be combined, divided, and deleted according to actual needs. In addition, the functional units in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0096] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present invention.

[0097] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A compensation method for the refrigerating capacity of an air conditioner, characterized in that, The method comprises: After the air conditioner is turned on, the operating parameters and cooling capacity of the air conditioner are detected in real time, and whether the compressor is running at a reduced frequency is determined according to the operating parameters; If the compressor is running at reduced frequency, data fitting is performed based on historical operating parameters to obtain a first fitting relationship between the compressor operating frequency and the refrigeration capacity, and a second fitting relationship between the internal fan speed and the refrigeration capacity; Determining the current refrigeration capacity to be compensated by using the first fitting relationship according to the current operating frequency of the compressor, and obtaining the speed to be increased of the indoor fan by speed calculation based on the refrigeration capacity to be compensated and the second fitting relationship; The internal fan is controlled to operate according to the rotational speed to be increased to compensate for the cooling energy efficiency.

2. The method according to claim 1, wherein The operating parameters include the operating frequency of the compressor, and the step of determining whether the compressor is operating at a reduced frequency based on the operating parameters includes: comparing the compressor operating frequency monitored in real time with a preset normal operating frequency; If the current operating frequency of the compressor is lower than the preset normal operating frequency, it is determined that the compressor is operating at a reduced frequency.

3. The method according to claim 1, wherein The step of performing data fitting based on historical operating parameters to obtain a first fitting relationship between the compressor operating frequency and the refrigeration capacity, and a second fitting relationship between the internal fan speed and the refrigeration capacity, respectively, includes: The compressor operating frequency and internal fan speed recorded in the historical operating parameters are fitted with the refrigeration capacity at the same time using a preset fitting function; The first fitting relationship and the second fitting relationship are determined according to the data fitting result.

4. The method according to claim 1, wherein The step of determining the current refrigeration capacity to be compensated by using the first fitting relationship according to the current operating frequency of the compressor includes: Obtaining the current compressor refrigeration capacity and the preset refrigeration capacity by using the first fitting relationship between the current compressor operating frequency and the preset normal operating frequency; The refrigeration capacity to be compensated is obtained by performing a difference calculation between the refrigeration capacity of the compressor and the preset refrigeration capacity.

5. The method according to claim 4, wherein The step of obtaining the speed to be increased of the indoor fan by speed calculation according to the refrigeration capacity to be compensated and the second fitting relationship includes: Inputting the current speed of the internal fan and the speed of the internal fan after increasing the speed by a preset unit into the second fitting relationship to obtain the compensated cooling capacity after increasing the speed by each preset unit; The ratio of the compensated refrigeration capacity to the refrigeration capacity to be compensated is calculated to determine the speed of the internal fan to be increased.

6. The method according to claim 4, wherein The step of determining the current refrigeration capacity to be compensated by using the first fitting relationship for the current operating frequency of the compressor, and obtaining the speed to be increased of the indoor fan by speed calculation according to the refrigeration capacity to be compensated and the second fitting relationship, further includes: Calculating a target speed increase ratio using a preset cooling compensation formula according to the first fitting relationship and the second fitting relationship; The speed to be increased is determined by increasing the target speed ratio by combining the current operating frequency of the compressor and the current speed of the internal fan.

7. The method according to claim 1, characterized in that, After the step of controlling the operation of the internal fan according to the speed to be increased to compensate for the cooling energy efficiency, the method further includes: Monitor the operating frequency of the compressor in real time. If it is detected that the compressor runs at a reduced frequency again, determine the rotational speed to be increased according to the operating frequency after the frequency reduction again.

8. A compensation device for the refrigerating capacity of an air conditioner, characterized in that, It includes: A judgment unit, configured to detect the operating parameters and refrigeration capacity of the air conditioner in real time after the air conditioner is turned on, and judge whether the compressor runs at a reduced frequency according to the operating parameters; A fitting unit, configured to perform data fitting according to historical operating parameters if the compressor runs at a reduced frequency, and respectively obtain a first fitting relationship between the operating frequency of the compressor and the refrigeration capacity, and a second fitting relationship between the rotational speed of the internal fan and the refrigeration capacity; A calculation unit, configured to determine the current refrigeration capacity to be compensated by passing the current operating frequency of the compressor through the first fitting relationship, and calculate and obtain the rotational speed to be increased of the internal fan according to the refrigeration capacity to be compensated and the second fitting relationship through rotational speed calculation; A compensation unit, configured to control the operation of the internal fan according to the rotational speed to be increased to compensate the refrigeration energy efficiency.

9. A computer device, characterized in that, The computer device includes a memory and a processor. A computer program is stored on the memory. When the processor executes the computer program, the method described in any one of claims 1-7 is implemented.

10. A storage medium, characterized in that, The storage medium stores a computer program, and the computer program includes program instructions. When the program instructions are executed by a processor, the method described in any one of claims 1-7 can be implemented.

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