Control method and device of refrigeration equipment, refrigeration equipment and computer program product

Abstract

The application discloses a kind of control method and device of refrigeration equipment, refrigeration equipment and computer program product.Therein, the method comprises: when refrigeration equipment is in refrigeration mode and does not enter dehumidification mode, the operating state parameters and environmental parameters of refrigeration system are collected;When operating state parameters and environmental parameters all satisfy preset condition, confirm to execute anti-condensation control mode;In anti-condensation control mode, second indoor unit is selected from first indoor unit, and the average inlet pipe temperature of second indoor unit in each preset period is calculated;Based on average inlet pipe temperature and the operating stage of compressor, dynamic correction amount is calculated;The target frequency of compressor is calculated based on dynamic correction amount, and compressor is controlled to operate at target frequency.The application solves the technical problem that air conditioning system in related art under the condition of no low pressure sensor, due to lack of effective anti-condensation control strategy, evaporator or air outlet is prone to produce condensation, which affects equipment reliability and user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control technology, and more specifically, to a control method and apparatus for refrigeration equipment, refrigeration equipment, and computer program product. Background Technology

[0002] During the operation of an air conditioning unit, especially in cooling mode, the evaporator surface temperature is low, which easily causes water vapor in the air to condense into water droplets on the evaporator or the air outlet of the indoor unit, forming condensation. Condensation not only affects the normal operation of the air conditioner but can also cause equipment damage or dampness in the indoor environment. Traditional anti-condensation control modes typically rely on low-pressure sensors to detect system pressure to determine whether the system is in a low-temperature, low-pressure state, and adjust the compressor frequency or fan speed accordingly to prevent condensation.

[0003] However, low-pressure sensors are expensive and have a certain failure rate, limiting their application in some budget air conditioning products. In air conditioning systems without low-pressure sensors, the lack of effective anti-condensation control strategies makes the system prone to condensation problems under certain operating conditions, affecting user experience and equipment reliability.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a control method and apparatus for refrigeration equipment, refrigeration equipment, and computer program product, to at least solve the technical problem in the related art that air conditioning systems without low-pressure sensors are prone to condensation on the evaporator or air outlet due to the lack of an effective anti-condensation control strategy, which affects equipment reliability and user experience.

[0006] According to one aspect of the present invention, a control method for a refrigeration device is provided, comprising: when the refrigeration device is in a refrigeration mode and not in a dehumidification mode, collecting operating status parameters and environmental parameters of the refrigeration system, wherein the operating status parameters include: compressor running time, the operating fan speed of a first indoor unit, and the number of the first indoor units; the environmental parameters include: outdoor ambient temperature, and the indoor ambient temperature of the first indoor unit, wherein the first indoor unit is an indoor unit with refrigeration demand among a plurality of indoor units in the refrigeration system; when both the operating status parameters and the environmental parameters meet preset conditions, confirming the execution of an anti-condensation control mode; in the anti-condensation control mode, selecting a second indoor unit from the first indoor units, calculating the average inlet pipe temperature of the second indoor unit in each preset cycle, wherein the second indoor unit is an indoor unit currently in refrigeration operation, not having reached the temperature stop point, and without fault alarm; calculating a dynamic correction amount based on the average inlet pipe temperature and the operating stage of the compressor; calculating the target frequency of the compressor based on the dynamic correction amount, and controlling the compressor to operate at the target frequency.

[0007] Optionally, when both the operating status parameters and the environmental parameters meet preset conditions, the anti-condensation control mode is confirmed to be executed, including: determining that the compressor operating time is greater than or equal to a preset time threshold, the outdoor ambient temperature is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the indoor ambient temperature is greater than or equal to a third preset temperature and less than or equal to a fourth preset temperature, and the operating fan is at a low fan speed or a silent mode and the number is less than or equal to a preset number, the anti-condensation control mode is executed, wherein the first preset temperature is greater than the third preset temperature, and the second preset temperature is greater than the fourth preset temperature.

[0008] Optionally, based on the average inlet pipe temperature and the operating stage of the compressor, a dynamic correction amount is calculated, including: when the duration of the compressor during the start-up process, the oil return process, or the defrosting process is less than or equal to a preset duration, the dynamic correction amount is determined to be a first preset value; when the duration of the compressor during the start-up process, the oil return process, or the defrosting process is greater than the preset duration, a correction amount correction strategy is determined to be executed.

[0009] Optionally, when the duration of the compressor during the start-up process, the oil return process, or the defrosting process is greater than the preset duration, a correction strategy is determined to be implemented, including: when the average inlet pipe temperature is less than or equal to a fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle minus a second preset value; when the average inlet pipe temperature is greater than or equal to a sixth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle plus a third preset value, wherein the second preset value is greater than the third preset value, and the third preset value is greater than the first preset value; when the average inlet pipe temperature is less than the sixth preset temperature but greater than the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle.

[0010] Optionally, the range of the dynamic correction amount is from the current target frequency with a negative preset ratio to the first preset value.

[0011] Optionally, calculating the target frequency of the compressor based on the dynamic correction amount and controlling the compressor to operate at the target frequency includes: calculating the target frequency based on a preset mathematical model and the dynamic correction amount; and generating a frequency command based on the target frequency to control the compressor to operate at the target frequency.

[0012] Optionally, the control method for the refrigeration equipment further includes: in the anti-condensation control mode, monitoring the operating status parameters and the environmental parameters in real time; when either the operating status parameter or the environmental parameter fails to meet the preset conditions, exiting the anti-condensation control mode and executing the conventional refrigeration control mode.

[0013] According to another aspect of the present invention, a control device for a refrigeration equipment is also provided, comprising: a data acquisition unit, configured to acquire operating status parameters and environmental parameters of the refrigeration system when the refrigeration equipment is in refrigeration mode and not in dehumidification mode, wherein the operating status parameters include: compressor running time, the operating fan speed of a first indoor unit, and the number of the first indoor units; the environmental parameters include: outdoor ambient temperature, and the indoor ambient temperature of the first indoor unit, wherein the first indoor unit is an indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system; a determination unit, configured to confirm the execution of an anti-condensation control mode when both the operating status parameters and the environmental parameters meet preset conditions; a first calculation unit, configured to select a second indoor unit from the first indoor units in the anti-condensation control mode and calculate the average inlet pipe temperature of the second indoor unit in each preset cycle, wherein the second indoor unit is an indoor unit currently in refrigeration operation, has not reached the temperature stop point, and has no fault alarm; a second calculation unit, configured to calculate a dynamic correction amount based on the average inlet pipe temperature and the operating stage of the compressor; and a control unit, configured to calculate the target frequency of the compressor based on the dynamic correction amount and control the compressor to operate at the target frequency.

[0014] Optionally, the determining unit includes: an execution module, configured to execute the anti-condensation control mode when the compressor running time is greater than or equal to a preset time threshold, the outdoor ambient temperature is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the indoor ambient temperature is greater than or equal to a third preset temperature and less than or equal to a fourth preset temperature, and the operating fan is at a low fan speed or a silent mode and the number of such fan speeds is less than or equal to a preset number, wherein the first preset temperature is greater than the third preset temperature, and the second preset temperature is greater than the fourth preset temperature.

[0015] Optionally, the second calculation unit includes: a first determining module, configured to determine the dynamic correction amount as a first preset value when the duration of the compressor during the start-up process, the oil return process, or the defrosting process is less than or equal to a preset duration; and a second determining module, configured to determine to execute a correction amount correction strategy when the duration of the compressor during the start-up process, the oil return process, or the defrosting process is greater than the preset duration.

[0016] Optionally, the second determining module includes: a first determining submodule, configured to determine the dynamic correction amount as the dynamic correction amount of the previous preset cycle minus a second preset value when the average inlet temperature is less than or equal to a fifth preset temperature; a second determining submodule, configured to determine the dynamic correction amount as the dynamic correction amount of the previous preset cycle plus a third preset value when the average inlet temperature is greater than or equal to a sixth preset temperature, wherein the second preset value is greater than the third preset value, and the third preset value is greater than the first preset value; and a third determining submodule, configured to determine the dynamic correction amount as the dynamic correction amount of the previous preset cycle when the average inlet temperature is less than the sixth preset temperature and greater than the fifth preset temperature.

[0017] Optionally, the range of the dynamic correction amount is from the current target frequency with a negative preset ratio to the first preset value.

[0018] Optionally, the control unit includes: a third calculation module, used to calculate the target frequency based on a preset mathematical model and the dynamic correction amount; and a control module, used to generate a frequency command based on the target frequency to control the compressor to operate at the target frequency.

[0019] Optionally, the control method for the refrigeration equipment further includes: a monitoring unit, used to monitor the operating status parameters and the environmental parameters in real time under the anti-condensation control mode; and an execution unit, used to exit the anti-condensation control mode and execute the conventional refrigeration control mode when either the operating status parameter or the environmental parameter fails to meet the preset condition.

[0020] According to one aspect of the present invention, a refrigeration device is provided, wherein the refrigeration device uses the control method of the refrigeration device described in any one of the above embodiments.

[0021] According to one aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein the program executes the control method of the refrigeration device described in any one of the foregoing embodiments.

[0022] According to one aspect of the present invention, a processor is provided for running a program, wherein the program executes the control method of the refrigeration device described in any one of the above embodiments.

[0023] According to one aspect of the present invention, a computer program product is provided, including computer instructions that, when executed by a processor, perform the control method of the refrigeration device described in any one of the above embodiments.

[0024] By applying the technical solution of this application, in the control method of the above-mentioned refrigeration equipment, when the refrigeration equipment is in refrigeration mode and has not entered dehumidification mode, the operating status parameters and environmental parameters of the refrigeration system are collected; when the operating status parameters and environmental parameters meet the preset conditions, the anti-condensation control mode is confirmed to be executed; in the anti-condensation control mode, the second indoor unit is selected from the first indoor unit, and the average inlet pipe temperature of the second indoor unit in each preset cycle is calculated; based on the average inlet pipe temperature and the operating stage of the compressor, the dynamic correction amount is calculated; based on the dynamic correction amount, the target frequency of the compressor is calculated, and the compressor is controlled to run at the target frequency. This realizes the comprehensive judgment of the compressor running time, indoor and outdoor ambient temperature and indoor unit operating status, etc., and enters the anti-condensation mode when specific preset conditions are met. It also uses the average inlet pipe temperature to dynamically correct the compensation parameters in the compressor frequency, which solves the technical problem in the related technology that the air conditioning system without a low-pressure sensor is prone to condensation on the evaporator or air outlet due to the lack of an effective anti-condensation control strategy, affecting the reliability of the equipment and the user experience. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a hardware structure block diagram of a mobile terminal for a control method of a refrigeration device according to an embodiment of the present invention.

[0027] Figure 2 This is a flowchart of a control method for a refrigeration device according to an embodiment of the present invention;

[0028] Figure 3 This is a flowchart of an optional control method for a refrigeration device according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the control device of a refrigeration equipment according to an embodiment of the present invention.

[0030] The above figures include the following reference numerals:

[0031] 102. Processor; 104. Memory; 106. Transmission device; 108. Input / output device. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] As described in the background section, in the related art, air conditioning systems without low-pressure sensors suffer from the lack of effective anti-condensation control strategies, leading to condensation on the evaporator or air outlet, affecting equipment reliability and user experience. Embodiments of this invention provide a control method and apparatus for refrigeration equipment, refrigeration equipment, a computer-readable storage medium, a processor, and a computer program product.

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] The methods and embodiments provided in this invention can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a control method of a refrigeration device according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0037] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the mobile robot control method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0038] Example 1

[0039] According to an embodiment of the present invention, a method embodiment for controlling a refrigeration device is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0040] Figure 2 This is a flowchart of a control method for a refrigeration device according to an embodiment of the present invention, such as... Figure 2 As shown, the method includes the following steps:

[0041] Step S202: When the refrigeration equipment is in refrigeration mode and not in dehumidification mode, collect the operating status parameters and environmental parameters of the refrigeration system. The operating status parameters include: compressor running time, the operating fan speed of the first indoor unit, and the number of the first indoor units. The environmental parameters include: outdoor ambient temperature and indoor ambient temperature of the first indoor unit. The first indoor unit is the indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system.

[0042] In this embodiment, the first indoor unit specifically refers to the collection of all indoor units currently requesting cooling from the system. The operating status parameters include the cumulative duration after the compressor starts, the current fan speed of the first indoor unit, and the total number of first indoor units in the cooling demand state. The environmental parameters include the air temperature outside the unit (outdoor ambient temperature) and the air temperature inside the first indoor unit (indoor ambient temperature of the first indoor unit).

[0043] This method uses multi-sensor fusion technology to collect key parameters in real time that reflect the system's operating status (compressor running time, number and type of indoor unit fan) and environmental characteristics (outdoor ambient temperature, indoor ambient temperature of the first indoor unit) while eliminating interference from dehumidification mode. It then focuses on selecting the first indoor unit with cooling needs as the monitoring target.

[0044] By implementing this control method, a comprehensive and accurate data foundation is provided for subsequent anti-condensation judgments. By capturing high-risk operating conditions that are prone to condensation, such as low wind speed, low load, and specific temperature and humidity ranges, the system can accurately identify whether it is in a specific scenario that requires anti-condensation control intervention. This avoids erroneous triggering of control logic under normal cooling or extreme weather conditions, ensuring the pertinence and effectiveness of subsequent control strategies.

[0045] Step S204: When both the operating status parameters and environmental parameters meet the preset conditions, confirm the execution of the anti-condensation control mode.

[0046] In this embodiment, the preset conditions refer to a set of specific parameter thresholds used by the control system to determine whether it is qualified to trigger the anti-condensation control mode. The anti-condensation control mode is a special control strategy that dynamically adjusts the compressor operating frequency in a closed loop by comprehensively judging system operating parameters and environmental conditions without relying on a low-pressure sensor.

[0047] The specific preset conditions include: First, the compressor must run for at least 20 minutes to ensure the system has passed the startup transient and entered a stable operating phase; second, the outdoor ambient temperature must be between 25°C and 29°C to eliminate the significant impact of extreme high or low temperatures on heat exchange characteristics; third, the indoor ambient temperature of all indoor units in cooling demand state must be between 20°C and 28°C to ensure the indoor heat load is within the normal comfort range; fourth, the fan speed of all indoor units in cooling demand state must be at low or silent speed, as low fan speed will reduce heat exchange on the evaporator surface, which is a key factor in inducing condensation; fifth, the number of indoor units with cooling demand must not exceed 5 to define the system as operating under relatively low load.

[0048] The method compares the real-time parameters collected in step S202 with the system's preset threshold range. Only when all five conditions are met simultaneously—compressor running time exceeding 20 minutes, outdoor ambient temperature between 25°C and 29°C, indoor ambient temperature of all first indoor units between 20°C and 28°C, all first indoor units operating at low fan speed or silent mode, and the number of first indoor units with cooling demand not exceeding 5—is the trigger condition established and the anti-condensation control mode confirmed.

[0049] By implementing this control method, multi-dimensional collaboration is achieved, screening and accurately identifying specific operating conditions that are neither extreme weather nor prone to low-temperature condensation, such as low load and low wind speed. This ensures that the anti-condensation control mode only takes effect in scenarios where intervention is truly necessary, avoiding malfunctions in regular high-load or dehumidification modes, thereby protecting user comfort and improving the economy and rationality of the control strategy.

[0050] Step S206: In the anti-condensation control mode, select the second indoor unit from the first indoor unit, and calculate the average inlet pipe temperature of the second indoor unit in each preset cycle. The second indoor unit is the indoor unit that is currently in cooling operation, has not reached the temperature stop point, and has no fault alarm.

[0051] In this embodiment, the second indoor unit refers to a specific subset selected from all first indoor units with cooling demand under the anti-condensation control mode. This subset consists of indoor units currently in active cooling operation that simultaneously meet two exclusion conditions (i.e., not reaching the user-set temperature stop point and having no fault alarm). The preset period refers to a fixed time length used by the control system for sampling and calculation. Within this period, the system continuously collects the inlet pipe temperature data of the second indoor unit. The average inlet pipe temperature refers to the arithmetic average of the inlet pipe temperature data of the indoor units entering EXV automatic control (excluding those that have reached the temperature stop point or have failed to stop) at the end of a preset period.

[0052] This method performs data cleaning and feature extraction on the first indoor unit. Specifically, it removes invalid units that have reached the set temperature and stopped operating or have fault alarms from all indoor units with cooling needs, retaining only the second indoor units that are in an active cooling state. The inlet pipe temperature of these second indoor units is collected in each preset time period, and then the average inlet pipe temperature reflecting the overall heat exchange state of the system is obtained by arithmetic average calculation.

[0053] By implementing this control method, abnormal data interference caused by indoor unit shutdown or malfunction is effectively filtered out. The liquid return temperature of the actively operating indoor unit is used as a highly correlated proxy indicator of the evaporator surface temperature. The average value is calculated to smooth the fluctuation of a single device, providing a stable, real and representative control basis for subsequent dynamic frequency correction based on temperature feedback, and ensuring the accuracy of anti-condensation adjustment.

[0054] Step S208: Calculate the dynamic correction amount based on the average inlet pipe temperature and the compressor's operating stage.

[0055] In this embodiment, the compressor's operating phase refers to the different working periods during the compressor's continuous operation. The dynamic correction amount is a compensation value calculated according to specific rules based on the current compressor's operating phase and the average inlet pipe temperature of the second indoor unit, used to adjust the compressor's target frequency.

[0056] Specifically, the operation phase includes the compressor startup, the oil return process, and a specific time period after defrosting. This phase is divided into two key nodes: the first is the period within 1 minute of compressor startup, oil return, and defrosting completion; the second is the stable operation or other operating condition phase after the aforementioned 1 minute.

[0057] This method calculates the dynamic correction amount C using a segmented dynamic correction strategy based on the current operating stage of the compressor and the average inlet pipe temperature obtained in step S206. During the first minute after compressor startup, oil return, and defrosting, the C value is fixed at 0 to maintain system stability. In the steady-state phase after one minute, a closed-loop adjustment is performed based on the changing trend of the average inlet pipe temperature. Specifically, when the temperature is too low (≤3℃), the C value is gradually reduced, for example, by 2 each time; when the temperature is suitable (≥8℃), the C value is moderately increased, for example, by 1 each time. In cases other than these two, C remains unchanged, and the C value is always limited to the negative range ([-30%F, 0]).

[0058] By implementing this control method, a negative feedback regulation mechanism based on the actual heat exchange state of the evaporator (characterized by the inlet pipe temperature) is introduced. This prevents condensation caused by excessively low evaporator surface temperature, while avoiding excessive suppression of the compressor frequency that would cause a significant drop in cooling effect. This achieves a dynamic balance between anti-condensation protection and maintaining cooling performance, and the process does not rely on a low-pressure sensor at all.

[0059] Step S210: Calculate the target frequency of the compressor based on the dynamic correction amount, and control the compressor to operate at the target frequency.

[0060] In this embodiment, the compressor's target frequency refers to the frequency adjustment value calculated by the control system based on a data model under anti-condensation control mode. This conversion of temperature information reflecting the heat exchange state of the evaporator surface into a specific frequency adjustment value ensures that the compressor frequency can be dynamically and precisely linearly adjusted according to the condensation risk. Controlling the compressor to operate at the target frequency means converting the calculated target frequency value into a control command that the frequency converter can recognize, driving the compressor to execute the corresponding speed.

[0061] This method utilizes a pre-defined mathematical model The compensation amount C obtained by dynamic correction based on the average inlet pipe temperature is combined with the coefficient θ, the compressor displacement k, the target capacity Y and the compensation amount B to calculate the final compressor target frequency, and generate the corresponding control command to drive the compressor to run at this frequency, thereby realizing the adjustment of the system cooling output by adjusting the compressor speed to maintain the evaporator surface temperature above the condensation critical point.

[0062] By implementing this control method, a seamless connection between the anti-condensation control logic and hardware execution is achieved, ensuring that the compressor frequency can be continuously, smoothly and accurately dynamically adjusted according to the change in the average inlet pipe temperature. This avoids mechanical shocks caused by sudden frequency changes, and can also take into account the cooling efficiency of the system while preventing condensation, thus improving the stability and response accuracy of the control process.

[0063] As described above, in this embodiment, when the refrigeration equipment is in refrigeration mode and not in dehumidification mode, the operating status parameters and environmental parameters of the refrigeration system are collected. When both the operating status parameters and environmental parameters meet the preset conditions, the anti-condensation control mode is confirmed to be executed. In the anti-condensation control mode, the second indoor unit is selected from the first indoor unit, and the average inlet pipe temperature of the second indoor unit in each preset cycle is calculated. Based on the average inlet pipe temperature and the operating stage of the compressor, a dynamic correction amount is calculated. Based on the dynamic correction amount, the target frequency of the compressor is calculated, and the compressor is controlled to run at the target frequency. This achieves the purpose of comprehensively judging the compressor running time, indoor and outdoor ambient temperature, and indoor unit operating status, entering the anti-condensation mode when specific preset conditions are met, and using the average inlet pipe temperature to dynamically correct the compensation parameters in the compressor frequency. This achieves the technical effect of effectively preventing condensation under the condition of no low-pressure sensor, thereby improving the reliability of unit operation, maintaining heat exchange efficiency, and reducing production costs.

[0064] Therefore, the technical solution provided by the above embodiments of the present invention solves the technical problem in the related art that the air conditioning system without a low-pressure sensor is prone to condensation on the evaporator or air outlet due to the lack of an effective anti-condensation control strategy, which affects the reliability of the equipment and the user experience.

[0065] According to an embodiment of the present invention, when both the operating status parameters and environmental parameters meet preset conditions, the anti-condensation control mode is confirmed to be executed, including: determining that the compressor operating time is greater than or equal to a preset time threshold, the outdoor ambient temperature is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the indoor ambient temperature is greater than or equal to a third preset temperature and less than or equal to a fourth preset temperature, and the operating fan is at a low fan speed or a silent mode and the number is less than or equal to a preset number, the anti-condensation control mode is executed, wherein the first preset temperature is greater than the third preset temperature, and the second preset temperature is greater than the fourth preset temperature.

[0066] In this embodiment, determining that the compressor running time is greater than or equal to a preset time threshold means judging whether the cumulative running time after the compressor has successfully started has reached more than 20 minutes. The purpose is to eliminate the transient instability phase at the initial stage of compressor startup, ensuring that the system enters a relatively stable operating state before performing the anti-condensation logic judgment, thus avoiding false triggering. Determining that the outdoor ambient temperature is greater than or equal to the first preset temperature and less than or equal to the second preset temperature means judging whether the current outdoor temperature is within the range of 25°C to 29°C. The purpose is to filter out specific operating conditions with moderate outdoor temperatures, not extreme high or low temperatures. Determining that the indoor ambient temperature is greater than or equal to the third preset temperature and less than or equal to the fourth preset temperature means judging whether all systems with cooling needs... The purpose of checking whether the ambient temperature of the indoor unit is within the range of 20℃ to 28℃ is to confirm that the indoor environment is not in an extremely hot state that requires strong cooling, and to prevent excessive sacrifice of cooling effect due to the implementation of anti-condensation control when the user urgently needs cooling. The operation of the fan speed is low or silent and the number is less than or equal to the preset number. This means that all indoor units with cooling needs are operating at low fan speed or silent mode, and the total number of indoor units with cooling needs does not exceed 5. The purpose is to identify specific operating modes of low fan speed and low load, because low fan speed will reduce the heat exchange on the evaporator surface, which is very easy to cause the surface temperature to be too low and condensation to occur. At the same time, limiting the number of indoor units helps to control the overall system load within a safe range.

[0067] This method confirms that the system has moved out of the transient fluctuation phase of the initial startup and entered a stable operating state by detecting whether the compressor running time reaches a preset time threshold. Secondly, it monitors whether the outdoor ambient temperature falls within a specific range from the first preset temperature to the second preset temperature, and simultaneously monitors whether the indoor ambient temperature of all indoor units with cooling demand falls within a specific range from the third preset temperature to the fourth preset temperature, ensuring that the outdoor temperature range is generally higher than the indoor temperature range, in order to screen out typical condensation risk conditions under non-extreme weather conditions. Thirdly, it confirms that all indoor units with cooling demand are currently operating at low fan speed or silent mode, and that the number of indoor units operating simultaneously does not exceed a preset number, in order to identify high-risk scenarios where the evaporator heat exchange capacity is weakened due to low fan speed and low load, making it prone to excessively low surface temperature. Finally, the anti-condensation control mode is confirmed to be executed only when all five dimensions of the above conditions—compressor running time, outdoor ambient temperature, indoor ambient temperature, operating fan speed, and number of indoor units—are met. Thus, without the need for a low-pressure sensor, the condensation risk is accurately located by combining environmental load and operating status.

[0068] By implementing this control method, an anti-condensation triggering mechanism based on multi-parameter collaborative judgment was constructed. This mechanism can accurately identify high-condensation-risk operating conditions where the system is under low load, low wind speed, and non-extreme temperature difference. This ensures that the anti-condensation control mode only takes effect in scenarios where intervention is truly necessary, avoiding malfunctions under normal high load or extreme weather conditions. This effectively prevents evaporator condensation from damaging the equipment and maximizes the user's cooling comfort and the system's operational economy.

[0069] According to an embodiment of the present invention, a dynamic correction amount is calculated based on the average inlet pipe temperature and the operating stage of the compressor, including: when the duration of the compressor during the start-up process, oil return process, or defrosting end is less than or equal to a preset duration, the dynamic correction amount is determined to be a first preset value; when the duration of the compressor during the start-up process, oil return process, or defrosting end is greater than the preset duration, a correction amount correction strategy is determined to be executed.

[0070] In this embodiment, the startup process refers to the acceleration phase of the compressor from standstill to reaching a stable speed; the oil return process refers to the process by which the compressor returns refrigerant oil from the evaporator to the compressor through high-frequency operation; and the defrosting end refers to the moment when the defrosting cycle is completed and refrigeration operation resumes. The preset duration is usually 1 minute, used to define the duration of these special operating conditions. The method first detects whether the duration after the compressor enters any of the above transient processes is less than or equal to the preset duration. If so, the system is considered to be in an unstable period, and the dynamic correction amount is directly fixed to a first preset value (e.g., 0) to shield against misjudgments that may be caused by transient fluctuations in the system. Second, if the duration is greater than the preset duration, the system is considered to have entered a stable operating phase. At this time, the correction amount correction strategy is activated, that is, the dynamic correction amount is calculated and adjusted in real time based on the average inlet pipe temperature, thereby achieving fine-grained dynamic adjustment of anti-condensation control while ensuring the stability of the system's key operating conditions.

[0071] By implementing this control method, not only is control interference caused by system instability avoided during critical transient processes such as compressor startup, oil return, and defrosting, ensuring the safety of core operating conditions, but also real-time correction is performed using the average inlet pipe temperature after the system stabilizes, achieving a balance between the precision of anti-condensation control and the reliability of system operation.

[0072] According to an embodiment of the present invention, when the duration of the compressor during startup, oil return, or defrosting exceeds a preset duration, a correction strategy is determined to be implemented, including: when the average inlet pipe temperature is less than or equal to a fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle minus a second preset value; when the average inlet pipe temperature is greater than or equal to a sixth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle plus a third preset value, wherein the second preset value is greater than the third preset value, and the third preset value is greater than the first preset value; when the average inlet pipe temperature is less than the sixth preset temperature but greater than the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle.

[0073] In this embodiment, when the average inlet pipe temperature is less than or equal to the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle minus the second preset value. This means determining whether the average inlet pipe temperature, which reflects the heat exchange capacity of the evaporator, is ≤3℃. If so, the dynamic correction amount is reduced by 2. When the average inlet pipe temperature is greater than or equal to the sixth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle plus the third preset value. This means determining whether the average inlet pipe temperature is too high, i.e., greater than or equal to 8℃. If so, the dynamic correction amount is increased by 1. When the average inlet pipe temperature is less than the sixth preset temperature but greater than the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle. This means determining that the average inlet pipe temperature is in the middle normal range. The purpose is to keep the current control state unchanged and avoid frequent oscillations of the compressor frequency due to small fluctuations when no adjustment is needed, thus ensuring the stability of system operation.

[0074] In this method, if the average inlet pipe temperature is lower than or equal to the fifth preset temperature, it indicates that the evaporator surface temperature is too low and the risk of condensation is high. In this case, the dynamic correction amount is reduced by the second preset value based on the previous cycle to quickly reduce the compressor frequency and thus increase the surface temperature. Secondly, if the average inlet pipe temperature is higher than or equal to the sixth preset temperature, it indicates that the system has excessive cooling capacity or the surface temperature is too high. In this case, the dynamic correction amount is increased by the third preset value based on the previous cycle to appropriately restore the compressor frequency. Thirdly, if the average inlet pipe temperature is in the middle range between the fifth and sixth preset temperatures, the dynamic correction amount is kept unchanged to maintain the current stable state. Finally, by setting the second preset value to be greater than the third preset value, it is ensured that the frequency reduction response amplitude when facing the risk of condensation is greater than the frequency increase amplitude when restoring cooling, reflecting the control logic of prioritizing anti-condensation.

[0075] By implementing this control method, closed-loop fine adjustment of the compressor frequency is achieved. When the system is in steady state, it can respond quickly and suppress the risk of condensation with an asymmetrical adjustment range (the frequency reduction range is greater than the frequency increase range) based on the actual heat exchange temperature of the evaporator. At the same time, it maintains stable control under normal operating conditions. Thus, without the need for a low-pressure sensor, it effectively balances the safety of anti-condensation and the user's cooling comfort, and improves the operational reliability of the air conditioning unit under complex operating conditions.

[0076] Optionally, the range of the dynamic correction amount is from the current target frequency with a negative preset ratio to the first preset value.

[0077] According to an embodiment of the present invention, calculating the target frequency of the compressor based on a dynamic correction amount and controlling the compressor to operate at the target frequency includes: calculating the target frequency based on a preset mathematical model and a dynamic correction amount; and generating a frequency command based on the target frequency to control the compressor to operate at the target frequency.

[0078] In this embodiment, calculating the compressor's target frequency based on the dynamic correction amount and controlling the compressor to operate at the target frequency means using the dynamic correction amount, combined with the system's basic parameters, to calculate the final frequency value used to drive the compressor, and then executing the frequency command; the target frequency is calculated according to the formula... The calculation shows that the dynamic correction corresponds to parameter C, θ represents the combination coefficient, k represents the compressor displacement, Y represents the target capacity, and B represents the compensation amount. The purpose is to linearly superimpose the correction amount reflecting the heat exchange state onto the base frequency through a defined mathematical relationship, thereby ensuring the accuracy and repeatability of frequency regulation.

[0079] This method utilizes a pre-defined mathematical model The dynamic correction quantity (i.e. parameter C) reflecting the heat exchange state of the system is combined with the coefficient, displacement, target capacity and compensation quantity to calculate the final compressor target frequency and generate frequency control commands to drive the compressor to run.

[0080] By implementing this control method, the dynamic correction amount is combined with the compressor's basic operating parameters to calculate the precise target frequency and generate instructions to drive the compressor. This achieves seamless integration between the anti-condensation control logic and hardware execution, ensuring that the compressor frequency can be continuously, smoothly, and accurately adjusted dynamically according to the real-time heat exchange status of the system. This effectively avoids mechanical shocks caused by frequency mutations while ensuring the stability of system operation, and improves the response speed and execution accuracy of anti-condensation control.

[0081] According to an embodiment of the present invention, the control method for the refrigeration equipment further includes: in the anti-condensation control mode, real-time monitoring of operating status parameters and environmental parameters; when any one of the operating status parameters or environmental parameters does not meet the preset conditions, exiting the anti-condensation control mode and executing the conventional refrigeration control mode.

[0082] In this embodiment, Figure 3 This is a flowchart of an optional control method for a refrigeration device according to an embodiment of the present invention, such as... Figure 3 As shown, when any of the operating status parameters or environmental parameters fails to meet the preset conditions, the anti-condensation control mode will exit and the normal cooling control mode will be executed. This means that once any of the preset start-up conditions (such as running time less than 20 minutes, outdoor temperature exceeding 25-29℃, indoor temperature not between 20-28℃, fan not at low / silent speed, or more than 5 indoor cooling units) are detected to deviate, the system will immediately terminate based on the formula. The frequency correction calculation is then performed, switching to a conventional cooling control mode. This conventional cooling control mode refers to the basic operating control logic of the air conditioning unit in cooling mode, not in anti-condensation or dehumidification mode. In this mode, the control system dynamically adjusts the compressor frequency and electronic expansion valve opening based on parameters such as the difference between the target indoor temperature and the ambient indoor temperature, the compressor's operating status, and the electronic expansion valve opening. This is achieved through a PID algorithm or similar closed-loop control strategy to maintain a stable indoor temperature and meet the cooling load requirements.

[0083] This method continuously collects operating status parameters (such as compressor running time, indoor unit fan baffle and number) and environmental parameters (such as indoor and outdoor temperatures) in anti-condensation mode, and compares them with five preset start-up conditions in real time. Once any parameter is detected to deviate from the specified range, the condition is determined to be invalid, thereby triggering the mode switching logic.

[0084] By implementing this control method, a safety boundary and adaptive mechanism for the system are constructed, ensuring that the anti-condensation strategy is effective only within a specific and stable operating window. When changes in operating conditions cause the strategy to become unsuitable, it can immediately revert to the normal cooling mode. This avoids a severe decrease in cooling effect or damage to user comfort caused by forcibly maintaining anti-condensation control, and also prevents system malfunctions that may occur under unsuitable operating conditions. Thus, it comprehensively protects the operational safety, reliability, and user experience of the air conditioning unit across the entire operating range.

[0085] As can be seen from the above, the technical solution provided by the above embodiments of the present invention determines whether to enter this mode by comprehensively judging five preconditions, including compressor start-up time, indoor and outdoor ambient temperature, indoor fan damper, and number of indoor units; after the conditions are met, a specific calculation formula is used ( The compressor frequency is dynamically adjusted to increase the system low pressure, and the compensation amount C is periodically corrected by using the average inlet pipe temperature of the indoor unit that enters the EXV automatic control cooling operation. This effectively prevents condensation caused by excessively low evaporator surface temperature without relying on the low pressure sensor, thereby improving system stability and reducing costs.

[0086] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0087] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0088] Example 2

[0089] According to embodiments of the present invention, a control device for a refrigeration device for implementing the control method of the above-described refrigeration device is also provided. Figure 4 This is a schematic diagram of the control device of a refrigeration equipment according to an embodiment of the present invention, such as... Figure 4 As shown, the device includes: a data acquisition unit 401, a determination unit 403, a first calculation unit 405, a second calculation unit 407, and a control unit 409. The device will now be described in detail.

[0090] The acquisition unit 401 is used to acquire the operating status parameters and environmental parameters of the refrigeration system when the refrigeration equipment is in refrigeration mode and not in dehumidification mode. The operating status parameters include: compressor running time, the operating fan speed of the first indoor unit, and the number of the first indoor units. The environmental parameters include: outdoor ambient temperature and indoor ambient temperature of the first indoor unit. The first indoor unit is the indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system.

[0091] The determining unit 403 is used to confirm the execution of the anti-condensation control mode when both the operating status parameters and environmental parameters meet the preset conditions.

[0092] The first calculation unit 405 is used to select the second indoor unit from the first indoor unit in the anti-condensation control mode, and calculate the average inlet pipe temperature of the second indoor unit in each preset cycle. The second indoor unit is the indoor unit that is currently in the cooling operation state, has not reached the temperature stop point, and has no fault alarm.

[0093] The second calculation unit 407 is used to calculate the dynamic correction amount based on the average inlet pipe temperature and the operating stage of the compressor.

[0094] Control unit 409 is used to calculate the target frequency of the compressor based on the dynamic correction amount and control the compressor to operate at the target frequency.

[0095] It should be noted that the above-mentioned acquisition unit 401, determination unit 403, first calculation unit 405, second calculation unit 407 and control unit 409 correspond to steps S202 to S210 in the above embodiments. The five units and the corresponding steps implement the same instances and application scenarios, but are not limited to the content disclosed in the above embodiments.

[0096] As can be seen from the above, in the scheme described in the above embodiments of the present invention, a data acquisition unit can be used to acquire the operating status parameters and environmental parameters of the refrigeration system when the refrigeration equipment is in refrigeration mode and not in dehumidification mode. The operating status parameters include: compressor running time, the operating fan speed of the first indoor unit, and the number of the first indoor units. The environmental parameters include: outdoor ambient temperature and indoor ambient temperature of the first indoor unit. The first indoor unit is the indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system. A determination unit is used to confirm the execution of the anti-condensation control mode when both the operating status parameters and the environmental parameters meet the preset conditions. A first calculation unit is used to select the second indoor unit from the first indoor units in the anti-condensation control mode and calculate the average inlet pipe temperature of the second indoor unit in each preset cycle. The second indoor unit is the indoor unit that is currently in refrigeration operation, has not reached the temperature stop point, and has no fault alarm. A second calculation unit is used to calculate the dynamic correction amount based on the average inlet pipe temperature and the operating stage of the compressor. A control unit is used to calculate the target frequency of the compressor based on the dynamic correction amount and control the compressor to operate at the target frequency. The above technical solution achieves the goal of comprehensively judging the compressor running time, indoor and outdoor ambient temperature and indoor unit operating status, and entering the anti-condensation mode when specific preset conditions are met. It also uses the average inlet pipe temperature to dynamically correct the compensation parameters in the compressor frequency, thus effectively preventing condensation under the condition of no low pressure sensor, thereby improving the reliability of unit operation, maintaining heat exchange efficiency and reducing production costs.

[0097] Therefore, the technical solution provided by the above embodiments of the present invention solves the technical problem in the related art that the air conditioning system without a low-pressure sensor is prone to condensation on the evaporator or air outlet due to the lack of an effective anti-condensation control strategy, which affects the reliability of the equipment and the user experience.

[0098] Optionally, the determining unit includes: an execution module, used to determine that when the compressor running time is greater than or equal to a preset time threshold, the outdoor ambient temperature is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the indoor ambient temperature is greater than or equal to a third preset temperature and less than or equal to a fourth preset temperature, and the operating fan is at a low fan speed or a silent mode and the number is less than or equal to a preset number, an anti-condensation control mode is executed, wherein the first preset temperature is greater than the third preset temperature, and the second preset temperature is greater than the fourth preset temperature.

[0099] Optionally, the second calculation unit includes: a first determining module, used to determine the dynamic correction amount as a first preset value when the duration of the compressor during the start-up process, oil return process, or defrosting end is less than or equal to a preset duration; and a second determining module, used to determine to execute a correction amount correction strategy when the duration of the compressor during the start-up process, oil return process, or defrosting end is greater than the preset duration.

[0100] Optionally, the second determining module includes: a first determining submodule, configured to determine the dynamic correction amount as the dynamic correction amount of the previous preset cycle minus a second preset value when the average inlet temperature is less than or equal to a fifth preset temperature; a second determining submodule, configured to determine the dynamic correction amount as the dynamic correction amount of the previous preset cycle plus a third preset value when the average inlet temperature is greater than or equal to a sixth preset temperature, wherein the second preset value is greater than the third preset value and the third preset value is greater than the first preset value; and a third determining submodule, configured to determine the dynamic correction amount as the dynamic correction amount of the previous preset cycle when the average inlet temperature is less than the sixth preset temperature but greater than the fifth preset temperature.

[0101] Optionally, the range of the dynamic correction amount is from the current target frequency with a negative preset ratio to the first preset value.

[0102] Optionally, the control unit includes: a third calculation module for calculating the target frequency based on a preset mathematical model and dynamic correction; and a control module for generating frequency commands based on the target frequency to control the compressor to operate at the target frequency.

[0103] Optionally, the control method for the refrigeration equipment further includes: a monitoring unit for real-time monitoring of operating status parameters and environmental parameters in the anti-condensation control mode; and an execution unit for exiting the anti-condensation control mode and executing the conventional refrigeration control mode when any one of the operating status parameters or environmental parameters fails to meet the preset conditions.

[0104] According to one aspect of the present invention, a refrigeration device is provided, wherein the refrigeration device uses the control method of any of the above-described refrigeration devices.

[0105] According to one aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein the program executes the control method of the refrigeration device described in any of the above.

[0106] According to one aspect of the present invention, a processor is provided for running a program, wherein the program executes the control method of the refrigeration device described above.

[0107] According to one aspect of the present invention, a computer program product is provided, including computer instructions, which, when executed by a processor, perform a control method for a refrigeration device that executes any of the above-described methods.

[0108] Optionally, in this embodiment, the computer-readable storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any communication device in a group of communication devices.

[0109] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when the refrigeration equipment is in refrigeration mode and not in dehumidification mode, collecting the operating status parameters and environmental parameters of the refrigeration system, wherein the operating status parameters include: compressor running time, the operating fan speed of the first indoor unit, and the number of the first indoor units; the environmental parameters include: outdoor ambient temperature, and the indoor ambient temperature of the first indoor unit, wherein the first indoor unit is the indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system; when both the operating status parameters and environmental parameters meet preset conditions, confirming the execution of the anti-condensation control mode; in the anti-condensation control mode, selecting the second indoor unit from the first indoor units, calculating the average inlet pipe temperature of the second indoor unit in each preset cycle, wherein the second indoor unit is the indoor unit currently in refrigeration operation, has not reached the temperature stop point, and has no fault alarm; calculating a dynamic correction amount based on the average inlet pipe temperature and the operating stage of the compressor; calculating the target frequency of the compressor based on the dynamic correction amount, and controlling the compressor to operate at the target frequency.

[0110] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: determining that the compressor running time is greater than or equal to a preset time threshold, the outdoor ambient temperature is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the indoor ambient temperature is greater than or equal to a third preset temperature and less than or equal to a fourth preset temperature, and the operating fan is at a low fan speed or a silent mode and the number is less than or equal to a preset number, and executing an anti-condensation control mode, wherein the first preset temperature is greater than the third preset temperature, and the second preset temperature is greater than the fourth preset temperature.

[0111] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when the duration of the compressor during the start-up process, oil return process, or defrosting end is less than or equal to a preset duration, determine the dynamic correction amount as a first preset value; when the duration of the compressor during the start-up process, oil return process, or defrosting end is greater than the preset duration, determine to execute a correction amount correction strategy.

[0112] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when the average inlet temperature is less than or equal to a fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle minus a second preset value; when the average inlet temperature is greater than or equal to a sixth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle plus a third preset value, wherein the second preset value is greater than the third preset value, and the third preset value is greater than the first preset value; when the average inlet temperature is less than the sixth preset temperature and greater than the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle.

[0113] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: the value range of the dynamic correction amount is from the current target frequency with a negative preset ratio to a first preset value.

[0114] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: calculating a target frequency based on a preset mathematical model and a dynamic correction amount; generating a frequency command based on the target frequency to control the compressor to operate at the target frequency.

[0115] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: in the anti-condensation control mode, real-time monitoring of operating status parameters and environmental parameters; when any one of the operating status parameters or environmental parameters does not meet the preset conditions, exiting the anti-condensation control mode and executing the conventional cooling control mode.

[0116] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0117] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0118] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0119] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0122] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0123] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a refrigeration device, characterized in that, include: When the refrigeration equipment is in refrigeration mode and not in dehumidification mode, the operating status parameters and environmental parameters of the refrigeration system are collected. The operating status parameters include: compressor running time, the operating fan speed of the first indoor unit, and the number of the first indoor units. The environmental parameters include: outdoor ambient temperature and indoor ambient temperature of the first indoor unit. The first indoor unit is the indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system. When both the operating status parameters and the environmental parameters meet the preset conditions, the anti-condensation control mode is confirmed to be executed; In the anti-condensation control mode, a second indoor unit is selected from the first indoor unit, and the average inlet pipe temperature of the second indoor unit in each preset cycle is calculated. The second indoor unit is the indoor unit that is currently in cooling operation, has not reached the temperature stop point, and has no fault alarm. Based on the average inlet pipe temperature and the compressor's operating stage, a dynamic correction amount is calculated; The target frequency of the compressor is calculated based on the dynamic correction amount, and the compressor is controlled to operate at the target frequency.

2. The control method for the refrigeration equipment according to claim 1, characterized in that, When both the operating status parameters and the environmental parameters meet the preset conditions, the anti-condensation control mode is confirmed to be executed, including: When the compressor running time is greater than or equal to a preset time threshold, the outdoor ambient temperature is greater than or equal to a first preset temperature and less than or equal to a second preset temperature, the indoor ambient temperature is greater than or equal to a third preset temperature and less than or equal to a fourth preset temperature, and the operating fan is at a low fan speed or a silent setting and the number of such settings is less than or equal to a preset number, the anti-condensation control mode is executed, wherein the first preset temperature is greater than the third preset temperature, and the second preset temperature is greater than the fourth preset temperature.

3. The control method for the refrigeration equipment according to claim 1, characterized in that, Based on the average inlet pipe temperature and the compressor's operating stage, a dynamic correction is calculated, including: When the duration of the compressor during startup, oil return, or defrosting is less than or equal to a preset duration, the dynamic correction amount is determined to be a first preset value. When the duration of the compressor during the startup process, the oil return process, or the defrosting process exceeds the preset duration, a correction amount correction strategy is determined to be executed.

4. The control method for the refrigeration equipment according to claim 3, characterized in that, When the duration of the compressor's start-up process, oil return process, or defrosting end exceeds the preset duration, a correction strategy is determined to be implemented, including: When the average inlet temperature is less than or equal to the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle minus the second preset value. When the average inlet temperature is greater than or equal to the sixth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle plus the third preset value, wherein the second preset value is greater than the third preset value, and the third preset value is greater than the first preset value. When the average inlet temperature is less than the sixth preset temperature but greater than the fifth preset temperature, the dynamic correction amount is determined to be the dynamic correction amount of the previous preset cycle.

5. The control method for the refrigeration equipment according to claim 4, characterized in that, The range of the dynamic correction amount is from the current target frequency with a negative preset ratio to the first preset value.

6. The control method for the refrigeration equipment according to claim 1, characterized in that, Calculating the target frequency of the compressor based on the dynamic correction amount, and controlling the compressor to operate at the target frequency, includes: The target frequency is calculated based on the preset mathematical model and the dynamic correction amount; A frequency command is generated based on the target frequency to control the compressor to operate at the target frequency.

7. The control method for the refrigeration equipment according to claim 1, characterized in that, The control method for the refrigeration equipment further includes: In the anti-condensation control mode, the operating status parameters and the environmental parameters are monitored in real time; When any of the operating status parameters or the environmental parameters does not meet the preset conditions, the anti-condensation control mode is exited and the normal cooling control mode is executed.

8. A control device for a refrigeration equipment, characterized in that, include: The data acquisition unit is used to acquire the operating status parameters and environmental parameters of the refrigeration system when the refrigeration equipment is in refrigeration mode and not in dehumidification mode. The operating status parameters include: compressor running time, the operating fan speed of the first indoor unit, and the number of the first indoor units. The environmental parameters include: outdoor ambient temperature and indoor ambient temperature of the first indoor unit. The first indoor unit is the indoor unit with refrigeration demand among the multiple indoor units of the refrigeration system. The determining unit is used to confirm the execution of the anti-condensation control mode when both the operating status parameters and the environmental parameters meet preset conditions; The first calculation unit is used to select a second indoor unit from the first indoor unit in the anti-condensation control mode, and calculate the average inlet pipe temperature of the second indoor unit in each preset cycle, wherein the second indoor unit is an indoor unit that is currently in cooling operation, has not reached the temperature stop point, and has no fault alarm. The second calculation unit is used to calculate the dynamic correction amount based on the average inlet pipe temperature and the operating stage of the compressor; The control unit is used to calculate the target frequency of the compressor based on the dynamic correction amount, and control the compressor to operate at the target frequency.

9. A refrigeration device, characterized in that, The refrigeration equipment uses the control method of the refrigeration equipment according to any one of claims 1 to 7.

10. A computer program product comprising computer instructions, characterized in that, When the computer instructions are executed by the processor, the control method of the refrigeration device according to any one of claims 1 to 7 is performed.

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