Refrigerant load control method, apparatus, and unitary apparatus

Abstract

The present disclosure provides a refrigerant load control method, device and unit, and relates to the technical field of automation control. The refrigerant load control method comprises the following steps: obtaining a user working condition parameter; determining a first target opening degree according to the user working condition parameter and historical data; adjusting an adjusting device of a refrigerant load according to the first target opening degree; restarting after reducing the opening degree of the adjusting device according to a predetermined first proportion, and recording the correspondence between the current opening degree and the current equipment performance parameter until the predetermined condition is not met, and stopping the adjustment; taking the last determined opening degree of the adjusting device under the condition that the predetermined condition is met as a second target opening degree corresponding to the user working condition parameter; and adjusting the adjusting device of the refrigerant load according to the second target opening degree.

Description

Technical Field

[0001] This disclosure relates to the field of automation control technology, and in particular to a refrigerant load control method, device, and unit equipment. Background Technology

[0002] The motor temperature of the compressor in a large chiller unit is a crucial factor affecting its lifespan; a rapid temperature rise can shorten the motor's lifespan. For example, under harsh operating conditions, high starting current, long start-up time, or excessive refrigerant load preventing the motor from reaching its rated speed for an extended period, can cause a rapid accumulation of heat and a sharp rise in temperature. Additionally, completely shutting off the refrigerant load will also cause the motor temperature to rise rapidly due to the lack of refrigerant cooling.

[0003] The generator set starts up frequently every day, which will accelerate the aging of the motor insulation material and shorten the motor's lifespan over time. Summary of the Invention

[0004] One object of this disclosure is to provide an adaptive adjustment method to improve the lifespan of a compressor motor.

[0005] According to one aspect of some embodiments of this disclosure, a refrigerant load control method is proposed, comprising: acquiring user operating condition parameters; determining a first target opening degree based on the user operating condition parameters and historical data; adjusting a refrigerant load regulating device according to the first target opening degree; under predetermined conditions, reducing the opening degree of the regulating device by a predetermined first ratio and restarting it, and recording the correspondence between the current opening degree and the current equipment performance parameters, until the predetermined conditions are no longer met, and stopping the adjustment; taking the last determined opening degree of the regulating device under predetermined conditions as the second target opening degree corresponding to the user operating condition parameters; and adjusting the refrigerant load regulating device according to the second target opening degree.

[0006] In some embodiments, device performance parameters include starting current, starting time, and temperature rise parameters of the motor windings.

[0007] In some embodiments, the predetermined conditions include at least one of the following: the temperature rise parameter is within a predetermined second ratio range from low to high for devices of the same power; the current opening degree is within a predetermined adjustment range; the start-up time is within a predetermined start-up time range; or the start-up current is within a predetermined current range.

[0008] In some embodiments, determining the first target opening degree based on user operating parameters and historical data includes: determining the historical operating parameter value that is closest to the user operating parameters in the historical data, wherein the historical data includes the correspondence between historical operating parameters and opening degrees; and determining the opening degree corresponding to the closest historical operating parameter value as the first target opening degree.

[0009] In some embodiments, the method further includes: storing user operating condition parameters as historical operating condition parameters, and storing the second target opening degree as the opening degree corresponding to the historical operating condition parameters in historical data.

[0010] In some embodiments, the temperature rise parameter within a predetermined second proportion of the temperature rise data of devices of the same power, from low to high, includes: the temperature rise parameter being less than or equal to the maximum value among the temperature rise data of devices of the same power, from low to high, within a predetermined second proportion; or the temperature rise parameter being less than or equal to a predetermined second proportion of the sum of the temperature rise data of devices of the same power.

[0011] In some embodiments, the method further includes: after adjusting the refrigerant load adjustment device according to the first target opening degree, if the predetermined conditions are not met, increasing the opening degree of the adjustment device according to a predetermined third ratio, and recording the correspondence between the current opening degree and the current equipment performance parameters until the predetermined conditions are met, and stopping the adjustment; taking the current opening degree as the second target opening degree corresponding to the user operating condition parameters, so as to execute the operation of adjusting the refrigerant load adjustment device according to the second target opening degree.

[0012] In some embodiments, the refrigerant load control method is performed during unit startup or unit installation.

[0013] In some embodiments, the method conforms to at least one of the following: the user operating condition parameters include the user water temperature; or a predetermined first proportion includes 3%.

[0014] In some embodiments, the method conforms to at least one of the following: the starting current includes a starting current curve; or the temperature rise parameter includes a temperature rise curve.

[0015] In some embodiments, the method conforms to at least one of the following: a predetermined second ratio includes 10%; a predetermined adjustment range includes 50% to 80%; a predetermined start-up time range includes less than 12 seconds; or a predetermined current range includes less than 3.5 times the rated current.

[0016] Based on the method in the above embodiment, the opening degree under a condition similar to the current operating condition can be determined first based on historical data, and then gradually adjusted to determine the minimum opening degree of the adjustment device that meets the performance requirements. This improves the matching degree between the refrigerant load and the current operating condition, avoids overloading while improving heat dissipation efficiency, and thus improves the life of the compressor motor.

[0017] According to one aspect of some embodiments of this disclosure, a refrigerant load control device is provided, comprising: a parameter acquisition unit configured to acquire user operating condition parameters; a first opening degree determination unit configured to determine a first target opening degree based on the user operating condition parameters and historical data; an adjustment unit configured to: adjust the refrigerant load adjustment device according to the first target opening degree, and generate a correspondence between the user operating condition parameters and equipment performance parameters in real time; when a predetermined condition is met, reduce the opening degree of the adjustment device by a predetermined first ratio and restart it, and record the correspondence between the current opening degree and the current equipment performance parameters, until the predetermined condition is not met, and stop the adjustment; take the last determined opening degree of the adjustment device when the predetermined condition is met as the second target opening degree corresponding to the user operating condition parameters; and a control unit configured to adjust the refrigerant load adjustment device according to the second target opening degree.

[0018] In some embodiments, device performance parameters include starting current, starting time, and temperature rise parameters of the motor windings.

[0019] In some embodiments, the first opening degree determination unit is configured to determine the historical operating condition parameter value that is closest to the user's operating condition parameter in historical data, wherein the historical data includes the correspondence between historical operating condition parameters and opening degrees; and determine the opening degree corresponding to the closest historical operating condition parameter value as the first target opening degree.

[0020] In some embodiments, the predetermined conditions include at least one of the following: the temperature rise parameter is within a predetermined second ratio range from low to high for devices of the same power; the current opening degree is within a predetermined adjustment range; the start-up time is within a predetermined start-up time range; or the start-up current is within a predetermined current range.

[0021] In some embodiments, the device further includes a storage unit configured to store user operating parameters as historical operating parameters and a second target opening degree as the opening degree corresponding to the historical operating parameters into historical data.

[0022] In some embodiments, the temperature rise parameter within a predetermined second proportion of the temperature rise data of devices of the same power, from low to high, includes: the temperature rise parameter being less than or equal to the maximum value among the temperature rise data of devices of the same power, from low to high, within a predetermined second proportion; or the temperature rise parameter being less than or equal to a predetermined second proportion of the sum of the temperature rise data of devices of the same power.

[0023] In some embodiments, the adjustment unit is further configured to: after adjusting the refrigerant load adjustment device according to the first target opening degree, if the predetermined conditions are not met, increase the opening degree of the adjustment device according to a predetermined third ratio, and record the correspondence between the current opening degree and the current equipment performance parameters until the predetermined conditions are met and the adjustment is stopped; and use the current opening degree as the second target opening degree corresponding to the user operating condition parameters.

[0024] In some embodiments, the refrigerant load control method is performed during unit startup or unit installation.

[0025] In some embodiments, the method conforms to at least one of the following: the user operating condition parameters include the user water temperature; or a predetermined first proportion includes 3%.

[0026] In some embodiments, the method conforms to at least one of the following: the starting current includes a starting current curve; or the temperature rise parameter includes a temperature rise curve.

[0027] In some embodiments, the method conforms to at least one of the following: a predetermined second ratio includes 10%; a predetermined adjustment range includes 50% to 80%; a predetermined start-up time range includes less than 12 seconds; or a predetermined current range includes less than 3.5 times the rated current.

[0028] According to one aspect of some embodiments of this disclosure, a refrigerant load control device is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute any of the refrigerant load control methods described above based on instructions stored in the memory.

[0029] Such a device can first determine the opening degree under conditions similar to the current operating conditions based on historical data, and then make gradual adjustments based on this to determine the minimum opening degree of the adjustment device that meets the performance requirements. This improves the matching degree between the refrigerant load and the current operating conditions, avoids overloading, improves heat dissipation efficiency, and thus extends the life of the compressor motor.

[0030] According to one aspect of some embodiments of this disclosure, a non-transitory computer-readable storage medium is provided, having stored thereon computer program instructions that, when executed by a processor, implement the steps of any of the refrigerant load control methods described above.

[0031] According to one aspect of some embodiments of this disclosure, a unit device for temperature regulation is provided, comprising: a detection device configured to collect user operating parameters; any of the refrigerant load control devices described above; and an adjustment device configured to adjust the opening degree under the control of the refrigerant load control device to adjust the magnitude of the refrigerant load.

[0032] Such unit equipment can first determine the opening degree under conditions close to the current operating conditions based on historical data, and then make gradual adjustments based on this to determine the minimum opening degree of the adjustment device that meets the performance requirements. This improves the matching degree between the refrigerant load and the current operating conditions, avoids overloading, improves heat dissipation efficiency, and thus extends the life of the compressor motor. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation of the disclosure. In the drawings:

[0034] Figure 1 Flowcharts showing some embodiments of the refrigerant load control method disclosed herein.

[0035] Figure 2 Flowcharts showing some other embodiments of the refrigerant load control method of this disclosure.

[0036] Figure 3 This is a schematic diagram of some embodiments of the refrigerant load control device disclosed herein.

[0037] Figure 4 This is a schematic diagram of some other embodiments of the refrigerant load control device of this disclosure.

[0038] Figure 5 This is a schematic diagram of some further embodiments of the refrigerant load control device of this disclosure.

[0039] Figure 6 This is a schematic diagram of some embodiments of the unit equipment for temperature regulation disclosed herein. Detailed Implementation

[0040] The technical solutions of this disclosure will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] The inventors discovered that in related technologies, if the opening of the electric regulating device for the refrigerant load of the unit is too small, the refrigerant load will be too small during startup, affecting the heat dissipation of the motor and causing the motor temperature to accumulate rapidly; however, if the opening of the electric regulating device is too large, the refrigerant load will be too large during startup, causing the motor to start under load and unable to reach the rated speed for a long time, which will also cause the motor temperature to accumulate rapidly.

[0042] To address the aforementioned issues, this disclosure proposes a refrigerant load control method, device, and unit equipment that adaptively determines the opening degree of the refrigerant load adjustment device during startup, thereby matching the refrigerant load with the operating conditions, reducing motor temperature rise accumulation, and extending the service life of the compressor motor.

[0043] Flowcharts of some embodiments of the refrigerant load control method disclosed herein are as follows: Figure 1 As shown, steps S11-S17 are included. In some embodiments, the refrigerant load control method is performed during unit startup or unit installation.

[0044] In step S11, user operating condition parameters are acquired. In some embodiments, user operating condition parameters collected by the motherboard can be read. In some embodiments, user operating condition parameters can be acquired through a signal connection to a sensor deployed at a corresponding location. In some embodiments, user operating condition parameters include user water temperature. In some embodiments, user water temperature can be the temperature of user cooling water.

[0045] In step S12, the first target opening degree is determined based on the user's operating parameters and historical data.

[0046] In some embodiments, the historical data includes the correspondence between historical operating parameters and opening degrees. The user's operating parameters are queried in the historical data, and the historical operating parameter value closest to the user's operating parameters is determined. The opening degree corresponding to the closest historical operating parameter value is then determined as the first target opening degree. In some embodiments, the absolute value of the difference between the measured user operating parameters and the historical operating parameters in the historical data can be determined. The historical operating parameter corresponding to the smallest difference is then determined, and the opening degree corresponding to that historical parameter is taken as the first target opening degree.

[0047] In some embodiments, the correspondence between historical operating parameters and opening degrees in historical data can be generated based on test values ​​and empirical values. In some embodiments, historical data can be enriched based on the correspondence between the operating parameters recorded in the preceding adjustment of various temperature-regulating units (such as chillers, hot water units, air conditioning units, etc.) and the refrigerant load adjustment devices, thereby providing historical data to various units for use, thus improving the utilization rate of historical data and also improving the efficiency of subsequent adjustment.

[0048] In some embodiments, historical data can be stored locally, thereby reducing the requirements for the usage environment; in other embodiments, historical data can be stored on a server, and historical data can be queried by interacting with the server, thereby improving the real-time performance of historical data and improving the efficiency of subsequent adjustments.

[0049] In step S13, the refrigerant load adjustment device is adjusted according to the first target opening degree. In some embodiments, after the adjustment is completed, the equipment performance parameters are monitored.

[0050] In some embodiments, the device performance parameters include starting current, starting time, and temperature rise parameters of the motor windings. In some embodiments, the starting current is a starting current curve. In some embodiments, the temperature rise parameter is a temperature rise curve.

[0051] In some embodiments, the motherboard current detection board collects starting current data in real time, and the motherboard calculates the start-up completion time based on the starting current curve, forming a dynamically updated database curve. In some embodiments, a three-phase motor winding temperature sensor collects motor winding temperature rise data in real time. Based on this method, both starting current and temperature rise data can be collected for subsequent use.

[0052] In step S14, the opening of the adjustment device is reduced by a predetermined first ratio and then restarted, and the correspondence between the current opening and the current device performance parameters is recorded. In some embodiments, the predetermined first ratio can be between 1% and 5%, for example, a predetermined first ratio of 3%, thereby achieving a balance between the fineness and number of adjustment attempts and ensuring processing efficiency.

[0053] In step S15, it is determined whether the current device performance parameters meet predetermined conditions. If the predetermined conditions are met, the process returns to step S14; otherwise, step S16 is executed.

[0054] In some embodiments, the predetermined conditions include: the temperature rise parameter is within a predetermined second ratio range from low to high for the temperature rise data of devices with the same power, thereby making the setting of the temperature rise parameter consistent with the actual operating conditions of devices with the same power and improving the rationality of temperature rise control.

[0055] Based on the method in the above embodiments, the temperature rise parameters (such as the temperature rise curve) can meet the requirements after the opening degree of the adjusted regulating device is adopted, thus avoiding equipment damage caused by excessive temperature rise.

[0056] In some embodiments, the predetermined condition includes: the current opening degree falls within a predetermined adjustment range.

[0057] Based on the method in the above embodiments, adjustments can be stopped in a timely manner, avoiding excessive and unnecessary adjustments that could affect efficiency.

[0058] In some embodiments, the predetermined condition includes: the startup time meets a predetermined startup time range.

[0059] Based on the methods in the above embodiments, user waiting time can be reduced, and damage to the device caused by heat accumulation during the startup process can be avoided.

[0060] In some embodiments, the predetermined condition includes: the starting current meets a predetermined current range.

[0061] Based on the method in the above embodiments, it is possible to avoid equipment damage caused by excessive current, thereby improving the reliability of the determined opening degree of the regulating device.

[0062] In some embodiments, when all of the above conditions are met, it is determined that the current device performance parameters meet the predetermined conditions; when none of the conditions are met, it is determined that the current device performance parameters do not meet the predetermined conditions. This can improve the reliability and safety of the determined opening degree of the regulating device from multiple perspectives, and also improve the regulating efficiency and user experience.

[0063] In some embodiments, the temperature rise parameter within a predetermined second proportion of the temperature rise data of devices of the same power, from low to high, includes: the temperature rise parameter being less than or equal to the maximum value among the predetermined second proportion of temperature rise data of devices of the same power, from low to high. For example, assuming the predetermined second proportion is 10%, when there are N temperature rise data (N is a positive integer greater than or equal to 10), the value n, rounded down from 0.1N, is calculated as the number of data points representing 10%. From the N temperature rise data points, n data points are selected in ascending order, and the maximum value among these n data points is taken as the maximum temperature rise threshold. Based on the method in the above embodiments, the requirement for the temperature rise parameter can be limited to a certain proportion of the existing parameters, thereby ensuring that the obtained opening degree achieves a lower temperature rise effect under the current user operating conditions and improving the control capability of temperature rise.

[0064] In some embodiments, the temperature rise parameter within a predetermined second proportion range from low to high for temperature rise data of devices of the same power includes: the temperature rise parameter being less than or equal to a predetermined second proportion value equal to the sum of temperature rise data of devices of the same power. For example, assuming the predetermined second proportion is 10%, for temperature rise data t of devices of the same power... i Sum the results to obtain the total temperature value T, and use 0.1T as the maximum temperature rise threshold.

[0065] Based on the method in the above embodiments, the impact of accidentally generated deviation data can be reduced, and the accuracy of opening determination can be improved.

[0066] In some embodiments, the predetermined adjustment range of the opening of the adjustment device under predetermined conditions includes 50% to 80% of the maximum opening, thereby avoiding unnecessary over-adjustment and reducing the processing burden of the equipment.

[0067] In some embodiments, the predetermined start-up time range in the predetermined conditions includes less than 12 seconds, and in some embodiments, the predetermined current range includes less than 3.5 times the rated current. Such settings can prevent the adjustment of refrigerant load from affecting the normal operation of the unit and improve the reliability of unit operation.

[0068] In step S16, the opening degree of the adjustment device determined last time under the predetermined conditions is taken as the second target opening degree corresponding to the user operating condition parameters.

[0069] In some embodiments, the opening degree of the current adjustment device can be increased by a predetermined first proportion, or the last opening degree adjustment can be reversed.

[0070] In step S17, the second target opening degree is used as the default opening degree under the user-disclosed parameter conditions obtained in S11, and the regulating device for adjusting the refrigerant load is adjusted using this default opening degree. In some embodiments, the regulating device is an electric regulating device for the unit's refrigerant system, capable of precisely controlling the refrigerant system load.

[0071] Based on the method in the above embodiment, the opening degree under a condition similar to the current operating condition can be determined first based on historical data, and then gradually adjusted to determine the minimum opening degree of the adjustment device that meets the performance requirements. This improves the matching degree between the refrigerant load and the current operating condition, avoids overloading while improving heat dissipation efficiency, and thus improves the life of the compressor motor.

[0072] In some embodiments, in step S13 above, after adjusting the refrigerant load adjustment device according to the first target opening degree, it is first determined whether a predetermined condition can be met. If the predetermined condition can be met, step S14 is executed. If it is determined that the predetermined condition cannot be met, the opening degree of the adjustment device can be increased to make the equipment meet the predetermined condition, thereby avoiding a rapid temperature rise caused by insufficient refrigerant and improving the service life of the compressor motor.

[0073] In some embodiments, the opening degree of the adjustment device can be increased by a predetermined third ratio and then restarted. The correspondence between the current opening degree and the current device performance parameters is recorded until a predetermined condition is met. Then, the adjustment is stopped, and the current opening degree is the minimum opening degree that enables the device to meet the predetermined condition, which is used as the second target opening degree. Step S17 is then executed. In some embodiments, the predetermined first ratio can be between 1% and 5%, for example, the predetermined first ratio is 3%, thereby achieving a balance between the fineness and number of adjustment attempts and ensuring processing efficiency.

[0074] Based on the method described in the above embodiment, bidirectional adjustment of the refrigerant opening can be achieved, determining the opening that best matches the user's operating parameters, avoiding the problem of rapid temperature rise caused by excessive refrigerant load or insufficient refrigerant opening, and further improving the service life of the motor.

[0075] Flowcharts of some embodiments of the refrigerant load control method disclosed herein are as follows: Figure 2 As shown, steps 210 to 280 are included.

[0076] In step 210, user operating condition parameters are acquired. In some embodiments, user operating condition parameters can be acquired via a signal connection to a sensor deployed at a corresponding location. In some embodiments, user operating condition parameters include user water temperature. In some embodiments, user water temperature can be the temperature of user cooling water.

[0077] In step 220, the first target opening degree is determined based on the user's operating parameters and historical data.

[0078] In some embodiments, it is determined whether there are operating parameters in the historical data that are exactly the same as the user's operating parameters. If there are operating parameters that are the same as the user's operating parameters (or the difference is within a predetermined range), and the operating parameters are not preset values, then the first target opening degree is used as the opening degree of the current refrigerant load adjustment device, and subsequent adjustment operations and historical data update operations are not performed. In some embodiments, if there are no operating parameters that are exactly the same as the user's operating parameters (or the difference is within a predetermined range), then step 230 is performed. Through this method, historical data can be fully utilized, adjustment efficiency can be improved, and the amount of redundant historical data can be reduced.

[0079] In step 230, based on the method in any of the embodiments shown in S13 to S17 above, the opening degree (second target opening degree) corresponding to the current user operating condition parameters is determined.

[0080] In step 280, the user operating condition parameters are used as historical operating condition parameters, and the second target opening degree is used as the opening degree corresponding to the historical operating condition parameters. The correspondence between the user operating condition parameters and the second target opening degree is established and stored in the historical data to enrich the historical data.

[0081] In some embodiments, historical data can be stored locally and backed up to a server in real time or at a predetermined frequency, or when actively triggered by staff. The server then aggregates and updates historical data generated by multiple devices, improving the ease of use of historical data and reducing the requirements for the usage environment.

[0082] In some embodiments, historical data can be stored on a server, and historical data can be queried by interacting with the server. The generated correspondence can be uploaded to the server at a predetermined frequency or in real time, thereby improving the timeliness of historical data updates.

[0083] Based on the methods described in the above embodiments, historical data can be gradually enriched during use, improving the matching degree between the historical operating parameters retrieved later and the current user operating parameters, thereby reducing the need for adjustment attempts and improving adjustment efficiency.

[0084] In some embodiments, if the user's operating parameters are completely consistent with the historical operating parameters in the historical data in step S12, steps S13 to S16 can be skipped, and the refrigerant load adjustment device can be adjusted according to the first target opening degree, thereby making full use of the historical data and improving the adjustment efficiency.

[0085] In some embodiments, if the user's operating parameters are completely consistent with the historical operating parameters in the historical data, the source of the matched historical data can be further determined. If the source is an update of other units of the same model, steps S13 to S16 can be skipped, and the refrigerant load adjustment device can be adjusted according to the first target opening degree, thereby making full use of the operations already performed by other units. In some embodiments, if the matched historical data is initial data generated based on test values ​​and experience values, step S13 is continued.

[0086] Based on the methods described in the above embodiments, it is possible to further confirm unreliable initial data by making full use of the operations already performed by other units and equipment, thereby improving the reliability of the determined opening degree.

[0087] Take the operation of the chiller unit during startup and installation as an example.

[0088] In some embodiments, when the unit starts up, the mainboard detects the user's operating temperature. Based on this temperature, it selects the opening value (e.g., 70%) from the database that most closely matches the user's operating temperature for matching and debugging the electric regulating device. This opening value can be a preset value or previously updated data. During debugging, the mainboard records the starting current waveform in real time, and simultaneously records the motor winding temperature rise curve data, forming a database matching the user's water temperature, starting current, starting time, and motor winding temperature rise curve. Then, the opening of the electric regulating device is reduced by n% (e.g., 3%) each time, and the unit is restarted. The mainboard records the motor winding temperature rise curve, starting time, and starting current data in real time, and automatically compares and analyzes them. If the motor temperature rise is not within the 10% minimum temperature rise range of the temperature rise curve of equipment with the same power, and the starting time and starting current are within a reasonable range, the opening of the electric regulating device is further reduced by 3%. The adjustment range of the electric regulating device is set with an allowable adjustment range value (e.g., 50% to 80%) based on historical database experience. Within this adjustment range, until the motor temperature rise is within the lowest temperature rise range of equipment with the same power (e.g., within 10%) and the starting time and starting current are within the set reasonable range, the opening degree of this electric regulating device is determined as the "optimal value" for the current operating condition and entered into the database as the default opening degree of the electric regulating device for future units under this operating condition.

[0089] In some embodiments, when the unit is installed, it may be used under different user operating conditions. The mainboard prioritizes the "optimal value" from the database that is closest to the user's operating water temperature (e.g., 32°C) based on the actual user's operating water temperature (e.g., 30°C). During startup, the mainboard records the startup current waveform in real time, along with the motor winding temperature rise curve data and startup time, forming user water temperature, startup current, startup time, and motor winding temperature rise curve data. The electric regulating device's bypass butterfly valve is reduced by n% (e.g., 3%) each time to confirm the opening of the electric regulating device until the motor temperature rise is within the lowest point range of the curve for equipment of the same power (e.g., within 10%), and the startup time and startup current are within the set reasonable range. This electric regulating device opening is then determined as the "optimal value" for the current operating condition and entered into the database as the default opening of the electric regulating device for future units under this operating condition.

[0090] The parameter options and specific data in the above examples are for illustrative purposes only and do not constitute an undue limitation on this application.

[0091] Based on the methods described in the above embodiments, by accumulating data on unit startup under different user water temperature conditions, a relatively complete database matching water temperature, startup current, startup time, and motor winding temperature rise can be obtained. This database can adaptively adjust startup parameters under different operating conditions to achieve the lowest motor winding temperature and startup time and startup current within the optimal range.

[0092] Schematic diagrams of some embodiments of the refrigerant load control device disclosed herein are shown below. Figure 3 As shown. In some embodiments, the refrigerant load control device may be carried by the mainboard of the unit equipment, or it may be connected to the sensor signals of the mainboard or the unit equipment.

[0093] The parameter acquisition unit 31 can acquire user operating condition parameters. In some embodiments, the parameter acquisition unit 31 reads user operating condition parameters collected by the motherboard. In some embodiments, the parameter acquisition unit 31 acquires user operating condition parameters through a signal connection to a sensor deployed at a corresponding location. In some embodiments, the user operating condition parameters include user water temperature. In some embodiments, the user water temperature can be the temperature of the user's cooling water.

[0094] The first opening determination unit 32 can determine the first target opening based on user operating parameters and historical data.

[0095] In some embodiments, the historical data includes the correspondence between historical operating parameters and opening degrees. The user's operating parameters are queried in the historical data, and the historical operating parameter value closest to the user's operating parameters is determined. The opening degree corresponding to the closest historical operating parameter value is then determined as the first target opening degree. In some embodiments, the absolute value of the difference between the measured user operating parameters and the historical operating parameters in the historical data can be determined. The historical operating parameter corresponding to the smallest difference is then determined, and the opening degree corresponding to that historical parameter is taken as the first target opening degree.

[0096] In some embodiments, the correspondence between historical operating parameters and opening degrees in historical data can be generated based on test values ​​and empirical values. In some embodiments, historical data can be enriched based on the correspondence between the operating parameters recorded in the preceding adjustment of various temperature-regulating units (such as chillers, hot water units, air conditioning units, etc.) and the refrigerant load adjustment devices, thereby providing historical data to various units for use, thus improving the utilization rate of historical data and also improving the efficiency of subsequent adjustment.

[0097] In some embodiments, historical data can be stored locally, thereby reducing the requirements for the usage environment; in other embodiments, historical data can be stored on a server, and historical data can be queried by interacting with the server, thereby improving the real-time performance of historical data and improving the efficiency of subsequent adjustments.

[0098] The adjustment unit 33 can adjust the refrigerant load adjustment device according to the first target opening degree, and generate the correspondence between user operating condition parameters and equipment performance parameters in real time. Then, it reduces the opening degree of the adjustment device according to a predetermined first ratio, restarts, and records the correspondence between the current opening degree and the current performance parameters until the predetermined conditions are not met, and stops the adjustment. Then, the opening degree of the adjustment device determined at the last time when the predetermined conditions are met is taken as the second target opening degree corresponding to the user operating condition parameters.

[0099] In some embodiments, the device performance parameters include starting current, starting time, and temperature rise parameters of the motor windings. In some embodiments, the starting current is a starting current curve. In some embodiments, the temperature rise parameter is a temperature rise curve.

[0100] In some embodiments, the predetermined first ratio can be between 1% and 5%, for example, the predetermined first ratio is 3%, thereby achieving a balance between the fineness and number of adjustment attempts and ensuring processing efficiency.

[0101] In some embodiments, the predetermined condition includes: the temperature rise parameter is within a predetermined second ratio from low to high of the temperature rise data of devices with the same power.

[0102] Based on the method in the above embodiments, the temperature rise parameters (such as the temperature rise curve) can meet the requirements after the opening degree of the adjusted regulating device is adopted, thus avoiding equipment damage caused by excessive temperature rise.

[0103] In some embodiments, the predetermined condition includes: the current opening degree falls within a predetermined adjustment range.

[0104] Based on the method in the above embodiments, adjustments can be stopped in a timely manner, avoiding excessive and unnecessary adjustments that could affect efficiency.

[0105] In some embodiments, the predetermined condition includes: the startup time meets a predetermined startup time range.

[0106] Based on the methods in the above embodiments, user waiting time can be reduced, and damage to the device caused by heat accumulation during the startup process can be avoided.

[0107] In some embodiments, the predetermined condition includes: the starting current meets a predetermined current range.

[0108] Based on the method in the above embodiments, it is possible to avoid equipment damage caused by excessive current, thereby improving the reliability of the determined opening degree of the regulating device.

[0109] In some embodiments, when all of the above conditions are met, it is determined that the current device performance parameters meet the predetermined conditions; when none of the conditions are met, it is determined that the current device performance parameters do not meet the predetermined conditions. This can improve the reliability and safety of the determined opening degree of the regulating device from multiple perspectives, and also improve the regulating efficiency and user experience.

[0110] The control unit 34 is a regulating device that can adjust the refrigerant load according to the second target opening degree.

[0111] Such a device can first determine the opening degree under conditions similar to the current operating conditions based on historical data, and then make gradual adjustments based on this to determine the minimum opening degree of the adjustment device that meets the performance requirements. This improves the matching degree between the refrigerant load and the current operating conditions, avoids overloading, improves heat dissipation efficiency, and thus extends the life of the compressor motor.

[0112] In some embodiments, after adjusting the refrigerant load adjustment device according to the first target opening degree and generating the correspondence between user operating parameters and equipment performance parameters in real time, the adjustment unit 33 first determines whether a predetermined first condition is met. If it is determined that the predetermined first condition can be met, the operation of reducing the opening degree of the adjustment device according to a predetermined first ratio is performed. If it is determined that the predetermined condition cannot be met, the opening degree of the adjustment device can be increased to make the equipment meet the predetermined condition. The opening degree under the condition of meeting the first predetermined condition is taken as the second target opening degree, thereby avoiding a rapid temperature rise due to insufficient refrigerant and improving the service life of the compressor motor.

[0113] In some embodiments, the adjustment unit 33 can increase the opening degree of the adjustment device according to a predetermined third ratio and then restart, recording the correspondence between the current opening degree and the current equipment performance parameters until a predetermined condition is met, at which point the adjustment stops. The current opening degree is then the minimum opening degree that enables the equipment to meet the predetermined condition, serving as the second target opening degree. The control unit 34 then adjusts the refrigerant load adjustment device according to the second target opening degree. In some embodiments, the predetermined first ratio can be between 1% and 5%, for example, 3%, thereby achieving a balance between the precision and number of adjustment attempts and ensuring processing efficiency.

[0114] Such a device can achieve bidirectional adjustment of the refrigerant opening degree, determine the opening degree that best matches the user's operating parameters, avoid the problem of rapid temperature rise caused by excessive refrigerant load or insufficient refrigerant opening degree, and further improve the service life of the motor.

[0115] In some embodiments, such as Figure 3 As shown, the refrigerant load control device also includes a storage unit 35, which can use user operating parameters as historical operating parameters and the second target opening degree as the opening degree corresponding to the historical operating parameters, establish a correspondence between user operating parameters and the second target opening degree, and store it in historical data to enrich the historical data.

[0116] In some embodiments, historical data can be stored locally and backed up to a server in real time or at a predetermined frequency, or when actively triggered by staff. The server then aggregates and updates historical data generated by multiple devices, improving the ease of use of historical data and reducing the requirements for the usage environment.

[0117] In some embodiments, historical data can be stored on a server, and historical data can be queried by interacting with the server. The generated correspondence can be uploaded to the server at a predetermined frequency or in real time, thereby improving the timeliness of historical data updates.

[0118] Such a device can gradually enrich historical data during use, improve the matching degree between the historical operating parameters retrieved later and the current user operating parameters, thereby reducing the need for adjustment attempts and improving adjustment efficiency.

[0119] In some embodiments, when the user operating parameters are completely consistent with the historical operating parameters in the historical data, the first opening determination unit 32 does not trigger the adjustment unit 33, but instead triggers the control unit 34 to adjust the refrigerant load adjustment device according to the first target opening, thereby making full use of historical data and improving adjustment efficiency.

[0120] In some embodiments, when the user operating parameters are completely consistent with the historical operating parameters in the historical data, the first opening degree determination unit 32 can further determine the source of the matched historical data. If the source is an update of other unit equipment of the same model, the adjustment unit 33 is not triggered, but the control unit 34 is triggered to adjust the refrigerant load adjustment device according to the first target opening degree, so as to make full use of the operations already performed by other unit equipment. In some embodiments, if the matched historical data is initial data (such as preset value) generated based on test value or experience value, the adjustment unit 33 is triggered to generate a new correspondence between user operating parameters and opening degree.

[0121] Such a device can further confirm unreliable initial data by making full use of the operations already performed by other units, thereby improving the reliability of the determined opening degree.

[0122] A schematic diagram of an embodiment of the refrigerant load control device disclosed herein is shown below. Figure 4 As shown, the refrigerant load control device includes a memory 401 and a processor 402. The memory 401 can be a disk, flash memory, or any other non-volatile storage medium. The memory stores instructions from the corresponding embodiments of the refrigerant load control method described above. The processor 402 is coupled to the memory 401 and can be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 402 executes the instructions stored in the memory, improving the matching degree between the refrigerant load size and the current operating conditions, and extending motor life.

[0123] In one embodiment, it can also be as follows: Figure 5 As shown, the refrigerant load control device 500 includes a memory 501 and a processor 502. The processor 502 is coupled to the memory 501 via a BUS bus 503. The refrigerant load control device 500 can also be connected to an external storage device 505 via a storage interface 504 to access external data, and can also be connected to a network or another computer system (not shown) via a network interface 506. Further details are omitted here.

[0124] In this embodiment, by storing data instructions in the memory and then processing the instructions by the processor, the matching degree between the refrigerant load and the current operating conditions can be improved, thereby increasing the motor life.

[0125] In another embodiment, a computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the steps of the method in the corresponding embodiment of the refrigerant load control method. Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0126] Schematic diagrams of some embodiments of the unit equipment for temperature regulation disclosed herein are as follows: Figure 6 As shown. In some embodiments, the unit equipment used for temperature regulation can be a chiller, a hot water unit, an air conditioning unit, etc.

[0127] The detection device 61 can collect user operating parameters. In some embodiments, the detection device 61 can be a sensor for the unit equipment, capable of detecting user operating parameters based on its installation location. For example, the detection device 61 can be a temperature sensor used to detect the user's water temperature. In some embodiments, the detection device 61 can also include a mainboard current detection board, capable of collecting starting current data in real time, so that the mainboard can calculate the start-up completion time based on the starting current curve, forming a dynamically updated database curve. In some embodiments, the detection device 61 can also include a three-phase motor winding temperature sensor, capable of collecting motor winding temperature rise data in real time. Such a device can realize the collection of starting current and temperature rise data for subsequent use.

[0128] The refrigerant load control device 62 can be any of the types mentioned above, and can execute any of the refrigerant load control methods mentioned above.

[0129] The regulating device 63 is a refrigerant load regulating device, which can adjust the opening degree under the control of the refrigerant load control device, thereby realizing the adjustment of the refrigerant load.

[0130] Based on the unit equipment in the above embodiments, the opening degree under a state similar to the current operating condition can be determined first based on historical data, and then gradually adjusted on this basis to determine the minimum opening degree of the adjustment device that meets the performance requirements, thereby improving the matching degree between the refrigerant load and the current operating condition, avoiding excessive load while improving heat dissipation efficiency, and thus improving the life of the compressor motor.

[0131] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0132] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0133] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0134] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0135] The methods and apparatus of this disclosure may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of this disclosure are not limited to the order specifically described above unless otherwise specifically stated. Furthermore, in some embodiments, this disclosure may also be implemented as a program recorded on a recording medium, the program including machine-readable instructions for implementing the methods according to this disclosure. Thus, this disclosure also covers recording media storing programs for performing the methods according to this disclosure.

[0136] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this disclosure 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 this disclosure 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 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.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A refrigerant load control method, comprising: Obtain user operating condition parameters; Based on the user's operating parameters and historical data, determine the first target opening degree; The regulating device adjusts the refrigerant load according to the first target opening degree; Under predetermined conditions, the opening degree of the adjustment device is reduced by a predetermined first ratio, and the correspondence between the current opening degree and the current equipment performance parameters is recorded until the predetermined conditions are no longer met, at which point the adjustment is stopped. The equipment performance parameters include the temperature rise parameters of the motor windings. The opening degree of the regulating device determined at the last time under the predetermined conditions shall be taken as the second target opening degree corresponding to the user operating condition parameters. The regulating device adjusts the refrigerant load according to the second target opening degree. The predetermined conditions include: the temperature rise parameter being within a predetermined second proportion of the temperature rise data of devices of the same power, from low to high, including: the temperature rise parameter being less than or equal to the maximum value among the temperature rise data of devices of the same power, from low to high, within a predetermined second proportion; or the temperature rise parameter being less than or equal to a predetermined second proportion of the sum of the temperature rise data of devices of the same power.

2. The method according to claim 1, wherein, The device performance parameters also include starting current and starting time.

3. The method according to claim 2, wherein, The predetermined conditions also include at least one of the following: The current opening degree is within the predetermined adjustment range; The startup time falls within the scheduled startup time range; or The starting current is within the predetermined current range.

4. The method according to claim 1, wherein, The step of determining the first target opening degree based on the user's operating parameters and historical data includes: The historical operating condition parameter value that is closest to the user's operating condition parameter is determined from the historical data, wherein the historical data includes the correspondence between the historical operating condition parameter and the opening degree; The opening degree corresponding to the closest historical operating condition parameter value is determined as the first target opening degree.

5. The method according to any one of claims 1 to 3, further comprising: The user operating condition parameters are used as historical operating condition parameters, and the second target opening degree is used as the opening degree corresponding to the historical operating condition parameters, and stored in the historical data.

6. The method according to claim 1, further comprising: If the predetermined condition is not met after the adjusting device adjusts the refrigerant load according to the first target opening degree, The opening degree of the adjustment device is increased according to a predetermined third ratio, and the correspondence between the current opening degree and the current equipment performance parameters is recorded until the predetermined condition is met, at which point the adjustment is stopped. The current opening degree is used as the second target opening degree corresponding to the user's operating condition parameters, so as to execute the operation of the regulating device that adjusts the refrigerant load according to the second target opening degree.

7. The method according to any one of claims 1 to 4 or 6, wherein, The refrigerant load control method is executed during unit startup or unit installation.

8. The method according to any one of claims 1 to 4 or 6, wherein, The user operating parameters include the user's water temperature.

9. The method according to claim 2, wherein, The method meets at least one of the following criteria: The starting current includes a starting current curve; or The temperature rise parameters include the temperature rise curve.

10. A refrigerant load control device, comprising: The parameter acquisition unit is configured to acquire user operating condition parameters; The first opening determination unit is configured to determine the first target opening based on the user's operating parameters and historical data. The adjustment unit is configured as follows: The regulating device adjusts the refrigerant load according to the first target opening degree, and generates the correspondence between the user operating condition parameters and the equipment performance parameters in real time; Under predetermined conditions, the opening degree of the adjustment device is reduced by a predetermined first ratio, and the correspondence between the current opening degree and the current equipment performance parameters is recorded until the predetermined conditions are no longer met, at which point the adjustment is stopped. The equipment performance parameters include the temperature rise parameters of the motor windings. The opening degree of the regulating device determined at the last time under the predetermined conditions shall be taken as the second target opening degree corresponding to the user operating condition parameters. The control unit is configured to adjust the refrigerant load according to the second target opening degree. The predetermined conditions include: the temperature rise parameter being within a predetermined second proportion of the temperature rise data of devices of the same power, from low to high, including: the temperature rise parameter being less than or equal to the maximum value among the temperature rise data of devices of the same power, from low to high, within a predetermined second proportion; or the temperature rise parameter being less than or equal to a predetermined second proportion of the sum of the temperature rise data of devices of the same power.

11. The apparatus according to claim 10, wherein, The adjustment unit is further configured to: If the predetermined conditions are not met after the adjusting device adjusts the refrigerant load according to the first target opening degree, The opening degree of the adjustment device is increased according to a predetermined third ratio, and the correspondence between the current opening degree and the current equipment performance parameters is recorded until the predetermined condition is met, at which point the adjustment is stopped. The current opening is used as the second target opening corresponding to the user's operating condition parameters.

12. The apparatus according to claim 10 or 11, further comprising: The storage unit is configured to store the user's operating condition parameters as historical operating condition parameters and the second target opening degree as the opening degree corresponding to the historical operating condition parameters into historical data.

13. A refrigerant load control device, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to perform the method as described in any one of claims 1 to 9 based on instructions stored in the memory.

14. A non-transitory computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the method according to any one of claims 1 to 9.

15. A unit for temperature regulation, comprising: The detection device is configured to collect user operating condition parameters; The refrigerant load control device according to any one of claims 10 to 13; and The regulating device is configured to adjust the opening degree under the control of the refrigerant load control device to regulate the magnitude of the refrigerant load.

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