Refrigerant charge quantity determination method, device and equipment and computer storage medium

Abstract

The invention belongs to the technical field of heat pump equipment, and particularly relates to a refrigerant charging amount determining method, device and equipment and a computer storage medium. The method comprises the steps that in response to an obtained user demand, a demand parameter of a heat pump unit is determined, the demand parameter is input into a refrigerant prediction model, a first refrigerant charging amount corresponding to the demand parameter is obtained, and the refrigerant prediction model is obtained through training optimization according to historical operation parameters and the corresponding historical refrigerant charging amount; and a first instruction is sent to refrigerant charging equipment, so that the refrigerant charging equipment carries out refrigerant charging processing on the heat pump unit based on the first instruction, and the first instruction comprises the first refrigerant charging amount. According to the method, the refrigerant charging amount of the heat pump equipment is calculated through the model, the time for determining the refrigerant charging amount is shortened, the efficiency is improved, and the waste problem caused by frequent refrigerant charging and discharging in the charging debugging process is avoided.

Description

Technical Field

[0001] This application belongs to the technical field of heat pump equipment, specifically relating to a method, apparatus, equipment, and computer storage medium for determining refrigerant charge. Background Technology

[0002] Refrigerant is the key medium for achieving cold and heat circulation in heat pump equipment. Through the phase change of refrigerant, namely evaporation from liquid to gas and condensation from gas to liquid, heat pump equipment can transfer heat, thereby achieving the effect of cooling or heating.

[0003] In the existing technology, the refrigerant charge is calculated manually. The refrigerant charging equipment is then adjusted according to the manually calculated charge amount to complete the refrigerant charging of the target heat pump equipment.

[0004] However, the calculation process is complex, and manual calculation wastes manpower and time, resulting in a long and inefficient process for determining the refrigerant charge amount. Furthermore, during the commissioning phase of the charging equipment, frequent charging and discharging of refrigerant can lead to refrigerant waste and increased costs. Summary of the Invention

[0005] This application provides a method, apparatus, device, and computer storage medium for determining refrigerant charge amount, in order to solve the technical problems of time-consuming and inefficient manual calculation of refrigerant charge amount in the prior art.

[0006] In a first aspect, this application provides a method for determining the refrigerant charge amount, including:

[0007] Optionally, the heat pump unit includes: refrigerant piping, a condenser, and an evaporator. The demand parameters include: the temperature and pressure values ​​of the refrigerant piping, the first density and first volume ratio of the condenser, and the second density and second volume ratio of the evaporator. The step of inputting the demand parameters into the refrigerant prediction model to obtain the first refrigerant charge corresponding to the demand parameters includes:

[0008] Based on the diameter and length of the refrigerant pipeline, determine the volume of the refrigerant pipeline; based on the temperature and pressure values, determine the required density of the refrigerant pipeline.

[0009] The first sub-filling volume corresponding to the pipeline is determined based on the volume of the pipeline and the required density.

[0010] The second sub-charge amount corresponding to the condenser is determined based on the first density, the first volume ratio, and the volume of the condenser.

[0011] The third sub-charge amount corresponding to the evaporator is determined based on the second density, the second volume ratio, and the volume of the evaporator.

[0012] Based on the first sub-charge amount, the second sub-charge amount, and the third sub-charge amount, the first refrigerant charge amount corresponding to the operating parameters is determined.

[0013] Optionally, the method further includes:

[0014] After the refrigerant charging equipment has been charged, the operating parameters of the heat pump unit are obtained. The operating parameters are used to indicate the real-time operating status of the heat pump unit.

[0015] Based on the operating parameters, the operating status of the heat pump unit is determined, and when the operating status is abnormal, a refrigerant charge adjustment message is generated to prompt the user to adjust the refrigerant charge of the heat pump unit.

[0016] Optionally, the operating parameters include: condenser high pressure value and evaporator low pressure value. Determining the operating status of the heat pump unit based on the operating parameters includes:

[0017] The high pressure difference value of the condenser is determined based on the high pressure value of the condenser and the standard high pressure value of the condenser.

[0018] The operating status of the condenser is determined based on the difference value of the condenser high pressure and the standard value of the condenser high pressure.

[0019] The low-pressure difference value of the evaporator is determined based on the low-pressure value of the evaporator and the standard low-pressure value of the evaporator.

[0020] The operating status of the evaporator is determined based on the low-pressure difference value and the high-pressure standard value of the evaporator.

[0021] The operating status of the heat pump unit is determined based on the operating status of the condenser and the operating status of the evaporator.

[0022] Optionally, determining the operating status of the condenser based on the condenser high-pressure difference value and the condenser high-pressure standard value includes:

[0023] Determine a first ratio between the condenser high pressure difference value and the condenser high pressure standard value;

[0024] Determine whether the first ratio is less than the first percentage threshold;

[0025] If so, then the condenser is determined to be operating normally;

[0026] If not, then the condenser is determined to be in an abnormal operating state;

[0027] The step of determining the operating status of the evaporator based on the low-pressure difference value and the high-pressure standard value of the evaporator includes:

[0028] Determine a second ratio between the low-pressure difference value of the evaporator and the standard value of the high-pressure evaporator;

[0029] Determine whether the second ratio is less than the second percentage threshold;

[0030] If so, then the evaporator is determined to be operating normally;

[0031] If not, then the evaporator is determined to be in an abnormal operating state.

[0032] Optionally, determining the operating status of the heat pump unit based on the operating status of the condenser and the operating status of the evaporator includes:

[0033] Determine whether the condenser and evaporator are both operating normally;

[0034] If both the condenser and evaporator are operating normally, the heat pump unit is determined to be operating normally.

[0035] If the condenser and evaporator are not both operating normally, the heat pump unit is determined to be in an abnormal operating state.

[0036] Optionally, the method further includes:

[0037] The required parameters and the adjusted refrigerant charge amount are used as optimization data to optimize the refrigerant prediction model.

[0038] Secondly, this application provides a refrigerant charge determination device, comprising:

[0039] The determination module is used to determine the required parameters of the heat pump unit in response to the acquired user requirements;

[0040] The processing module is used to input the demand parameters into the refrigerant prediction model to obtain the first refrigerant charge corresponding to the demand parameters. The refrigerant prediction model is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge.

[0041] The processing module is further configured to send a first instruction to the refrigerant charging device, so that the refrigerant charging device performs refrigerant charging on the heat pump unit based on the first instruction, wherein the first instruction includes: the first refrigerant charging amount.

[0042] Optionally, the determining module is further configured to determine the volume of the refrigerant pipeline based on the diameter and length of the refrigerant pipeline, and to determine the required density of the refrigerant pipeline based on the temperature value and the pressure value.

[0043] The determining module is further configured to determine the first sub-filling volume corresponding to the pipeline based on the volume of the pipeline and the required density;

[0044] The determining module is further configured to determine the second sub-charge amount corresponding to the condenser based on the first density, the first volume ratio, and the volume of the condenser;

[0045] The determining module is further configured to determine the third sub-charge amount corresponding to the evaporator based on the second density, the second volume ratio, and the volume of the evaporator;

[0046] The determining module is further configured to determine the first refrigerant charge corresponding to the operating parameters based on the first sub-charge amount, the second sub-charge amount, and the third sub-charge amount.

[0047] Optionally, the device further includes: an acquisition module;

[0048] The acquisition module is used to acquire the operating parameters of the heat pump unit after the refrigerant charging equipment has been charged. The operating parameters are used to indicate the real-time operating status of the heat pump unit.

[0049] The determining module is further configured to determine the operating status of the heat pump unit based on the operating parameters;

[0050] The processing module is also used to generate a refrigerant charge adjustment message when the operating state is in an abnormal state. The refrigerant charge adjustment message is used to prompt the user to adjust the refrigerant charge of the heat pump unit.

[0051] Optionally, the determining module is further configured to determine the high pressure difference value of the condenser based on the high pressure value of the condenser and the standard high pressure value of the condenser;

[0052] The determining module is further configured to determine the operating status of the condenser based on the high pressure difference value of the condenser and the high pressure standard value of the condenser;

[0053] The determining module is further configured to determine the low pressure difference value of the evaporator based on the low pressure value of the evaporator and the standard low pressure value of the evaporator;

[0054] The determining module is further configured to determine the operating status of the evaporator based on the low-pressure difference value of the evaporator and the high-pressure standard value of the evaporator;

[0055] The determining module is further configured to determine the operating status of the heat pump unit based on the operating status of the condenser and the operating status of the evaporator.

[0056] Optionally, the device further includes: a determination module;

[0057] The determining module is further configured to determine a first ratio between the condenser high pressure difference value and the condenser high pressure standard value;

[0058] The judgment module is used to determine whether the first ratio is less than the first percentage threshold.

[0059] The determining module is further configured to determine that the condenser is operating normally when the first ratio is less than the first ratio threshold.

[0060] The determining module is further configured to determine that the operating state of the condenser is abnormal if the first ratio is not less than the first percentage threshold.

[0061] Optionally, the determining module is further configured to determine a second ratio between the low-pressure difference value of the evaporator and the high-pressure standard value of the evaporator;

[0062] The judgment module is also used to determine whether the second ratio is less than the second percentage threshold;

[0063] The determining module is also used to determine that the operating status of the evaporator is normal when the second ratio is less than the second ratio threshold.

[0064] The determining module is further configured to determine that the operating status of the evaporator is abnormal if the second ratio is not less than the second ratio threshold.

[0065] Optionally, the judgment module is further used to determine whether the operating status of the condenser and the evaporator is normal;

[0066] The determining module is also used to determine that the heat pump unit is operating normally when both the condenser and the evaporator are operating normally.

[0067] The determining module is also used to determine that the heat pump unit is in an abnormal operating state when the operating states of the condenser and the evaporator are not both normal.

[0068] Optionally, the processing module is further configured to use the demand parameters and the adjusted refrigerant charge as optimization data to optimize the refrigerant prediction model.

[0069] Thirdly, this application provides an electronic device, comprising:

[0070] A processor, and a memory communicatively connected to the processor;

[0071] The memory stores computer-executed instructions;

[0072] The processor executes computer execution instructions stored in the memory to implement the refrigerant charge determination method as described in the first aspect and various possible implementations of the first aspect above.

[0073] Fourthly, this application provides a computer storage medium storing computer execution instructions thereon, which are executed by a processor to implement the refrigerant charge determination method as described in the first aspect and various possible implementations of the first aspect.

[0074] Fifthly, this application provides a program product including a computer program that, when executed by a processor, implements the refrigerant charge determination method as described in the first aspect and various possible implementations of the first aspect.

[0075] The refrigerant charge determination method provided in this application, in response to obtained user requirements, determines the demand parameters of the heat pump unit, inputs these parameters into a refrigerant prediction model, and obtains the first refrigerant charge corresponding to the demand parameters. The refrigerant prediction model is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge amounts. A first instruction is sent to the refrigerant charging equipment, enabling the equipment to perform refrigerant charging on the heat pump unit based on the first instruction. The first instruction includes the first refrigerant charge amount. This method enables the model to calculate the refrigerant charge of the heat pump equipment, not only shortening the refrigerant charge determination time and improving efficiency, but also avoiding the waste caused by frequent refrigerant charging and discharging during the charging and commissioning process. Attached Figure Description

[0076] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0077] Figure 1 This is a flowchart illustrating the method for determining the refrigerant charge quantity provided in this application. Figure 1 ;

[0078] Figure 2 This is a flowchart illustrating the method for determining the refrigerant charge quantity provided in this application. Figure 2 ;

[0079] Figure 3 This is a flowchart illustrating the method for determining the refrigerant charge quantity provided in this application. Figure 3 ;

[0080] Figure 4 This is a schematic diagram of the refrigerant charge determination device provided in this application;

[0081] Figure 5 This is a schematic diagram of the structure of the electronic device provided in this application.

[0082] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0083] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0084] The terms "first," "second," "third," "fourth," etc. (if present) 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 embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0085] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0086] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with relevant laws, regulations and standards, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0087] Refrigerant is the key medium for achieving cold and heat circulation in heat pump equipment. Through the phase change of the refrigerant—evaporation from liquid to gas and condensation from gas to liquid—heat pump equipment can transfer heat, thereby achieving cooling or heating effects. Precise charge control and standardized operating procedures can ensure the efficient operation and long-term stability of heat pump equipment.

[0088] In the existing technology, the refrigerant charge is calculated manually. The refrigerant charging equipment is then adjusted according to the manually calculated charge amount to complete the refrigerant charging of the target heat pump equipment.

[0089] However, the calculation process is complex, and manual calculation wastes manpower and time, resulting in a long and inefficient process for determining the refrigerant charge amount. Furthermore, during the commissioning phase of the charging equipment, frequent charging and discharging of refrigerant can lead to refrigerant waste and increased costs.

[0090] To address the aforementioned issues, this application provides a method for determining refrigerant charge quantity. This method trains and optimizes a refrigerant prediction model based on historical operating parameters and corresponding historical refrigerant charge quantities. The refrigerant prediction model then performs calculations based on the user's demand parameters for the heat pump unit, obtaining the refrigerant charge quantity corresponding to those parameters. This reduces manual intervention and improves the efficiency of refrigerant charge quantity determination.

[0091] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0092] Figure 1 A flowchart illustrating the refrigerant charge determination method provided in this application embodiment. Figure 1 .like Figure 1 As shown, the refrigerant charge determination method provided in this embodiment includes:

[0093] S101: In response to the obtained user requirements, determine the required parameters of the heat pump unit.

[0094] In response to the required water temperature value indicated in the user's request, the required parameters of the heat pump unit corresponding to the required water temperature value are determined according to the user's required water temperature, such as refrigerant suction temperature and suction pressure. The required parameters are used to determine the refrigerant charge amount of the heat pump unit.

[0095] One possible implementation involves determining the heat pump unit's demand parameters based on the user's desired water temperature, for example, 7°C, according to load forecasts. These demand parameters could include, for example, refrigerant, temperature, pressure, and subcooling.

[0096] By determining the target water temperature value based on user needs, the required parameters of the heat pump unit are determined, so as to determine the refrigerant charge amount corresponding to the required parameters, thereby ensuring that the heat pump unit can efficiently and accurately reach the water temperature set by the user.

[0097] S102: Input the demand parameters into the refrigerant prediction model to obtain the first refrigerant charge corresponding to the demand parameters.

[0098] The demand parameters are input into a refrigerant prediction model, which is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge amounts. The refrigerant prediction model calculates the first refrigerant charge amount corresponding to the input demand parameters, using internal theoretical calculation formulas. This charge amount guides the refrigerant charging operation of the heat pump unit.

[0099] One possible implementation involves inputting demand parameters into a refrigerant prediction model, which calculates the first refrigerant charge based on these parameters, combined with its internal theoretical calculation formulas, historical data, and optimization algorithms.

[0100] The heat pump unit's required parameters, corresponding to the user's target water temperature, need to be input into the refrigerant prediction model. This allows the model to calculate the first refrigerant charge amount based on historical operating parameters and refrigerant charge optimization results. This first refrigerant charge amount ensures that the heat pump unit can reach the user's target water temperature after refrigerant charging. The refrigerant prediction model reduces manual intervention and improves the efficiency of refrigerant charge calculation.

[0101] S103: Send a first instruction to the refrigerant charging equipment so that the refrigerant charging equipment performs refrigerant charging on the heat pump unit based on the first instruction.

[0102] Specifically, a first instruction is generated, which includes the first refrigerant charge amount. The first instruction is sent to the refrigerant charging equipment so that the refrigerant charging equipment begins charging the heat pump unit with refrigerant according to the refrigerant charge amount in the first instruction.

[0103] One possible implementation involves a refrigerant prediction model calculating a first refrigerant charge of 3 kg, generating a first command, and sending this command to the refrigerant charging device. Upon receiving the first command, the refrigerant charging device parses the command content to obtain the first refrigerant charge amount. Based on this first refrigerant charge amount, the refrigerant charging device connects to the refrigerant charging interface of the heat pump unit and initiates the refrigerant charging operation.

[0104] Sending the first command to the refrigerant charging equipment ensures that the refrigerant charging is both efficient and accurate. This allows the heat pump system to operate stably after refrigerant charging, meeting the user's required water temperature.

[0105] The refrigerant charge determination method provided in this embodiment responds to acquired user demand, determines the demand parameters of the heat pump unit, inputs these parameters into a refrigerant prediction model, and obtains the first refrigerant charge corresponding to the demand parameters. The refrigerant prediction model is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge amounts. A first instruction is sent to the refrigerant charging equipment, enabling the equipment to perform refrigerant charging on the heat pump unit based on the first instruction. This method realizes model-based calculation of the refrigerant charge of the heat pump equipment, which not only shortens the refrigerant charge determination time and improves efficiency, but also avoids the waste caused by frequent refrigerant charging and discharging during the charging and commissioning process.

[0106] Figure 2 This is a flowchart illustrating a method for determining refrigerant charge quantity provided in an embodiment of this application. Figure 2 This embodiment is... Figure 1 Based on the examples, the method for determining the refrigerant charge amount is described in detail. For example... Figure 2 As shown, the refrigerant charge determination method provided in this embodiment includes:

[0107] S201: In response to the obtained user requirements, determine the required parameters of the heat pump unit, wherein the heat pump unit includes: refrigerant piping, condenser and evaporator, and the required parameters include: the temperature and pressure values ​​of the refrigerant piping, the first density and first volume ratio of the condenser, and the second density and second volume ratio of the evaporator.

[0108] Step S201 is similar to step S101 above, and will not be repeated here.

[0109] S202: Determine the volume of the refrigerant pipeline based on its diameter and length, and determine the required density of the refrigerant pipeline based on the temperature and pressure values.

[0110] The diameter and length of the refrigerant piping can be obtained from the nameplate of the heat pump unit or from its user manual. The volume of the refrigerant piping is then calculated based on its diameter and length.

[0111] Specifically, the formula for calculating the volume of refrigerant piping is:

[0112]

[0113] Where V is the volume of the refrigerant pipe, D is the diameter of the refrigerant pipe, and L is the length of the refrigerant pipe.

[0114] Calculate the required density of the refrigerant piping based on the temperature and pressure values.

[0115] Specifically, the formula for calculating the required density of refrigerant piping is: ρ = density(R, TP, SI, T, P), where R is the refrigerant type, TP represents the temperature and pressure input, SI is the national standard, T is the temperature value, and P is the pressure value.

[0116] By calculating the volume and required density, the first sub-charge amount of the refrigerant pipeline can be determined, thereby further determining the first refrigerant charge amount of the refrigerant unit.

[0117] S203: Determine the first sub-filling volume of the pipeline based on the pipeline volume and required density.

[0118] The formula for calculating the first sub-charge amount is: m1 = ρV.

[0119] Where m1 is the first charge of refrigerant in the refrigerant pipeline, ρ is the refrigerant pipeline demand density, and V is the refrigerant pipeline volume.

[0120] Determining the first refrigerant charge in the refrigerant pipeline facilitates subsequent calculations of the refrigerant charge in the heat pump unit, ensuring its normal operation and meeting the user's required water temperature.

[0121] S204: Determine the second sub-charge amount of the condenser based on the first density, the first volume ratio, and the volume of the condenser.

[0122] S205: Determine the third sub-charge amount corresponding to the evaporator based on the second density, the second volume ratio, and the volume of the evaporator.

[0123] The formula for calculating the second sub-charge amount is: m2=ρ1*η1*V1;

[0124] The formula for calculating the third charge amount is: m3=ρ2*η2*V2.

[0125] Where m2 is the second refrigerant charge of the condenser, ρ1 is the first density of the condenser, η1 is the first volume ratio of the condenser, V1 is the volume of the condenser, m3 is the third refrigerant charge of the evaporator, ρ2 is the second density of the evaporator, η2 is the second volume ratio of the evaporator, and V2 is the volume of the evaporator.

[0126] S206: Based on the first sub-charge amount, the second sub-charge amount, and the third sub-charge amount, determine the first refrigerant charge amount corresponding to the operating parameters.

[0127] Wherein, the first refrigerant charge is the sum of the first sub-charge, the second sub-charge, and the third sub-charge.

[0128] Specifically, the formula for calculating the first refrigerant charge is as follows:

[0129] The first refrigerant charge m = m1 + m2 + m3.

[0130] Where m1 is the first sub-charge amount of the refrigerant pipeline, m2 is the second sub-charge amount of the condenser, and m3 is the third sub-charge amount of the evaporator.

[0131] S207: Send a first instruction to the refrigerant charging equipment so that the refrigerant charging equipment performs refrigerant charging on the heat pump unit based on the first instruction.

[0132] Step S207 is similar to step S103 above, and will not be repeated here.

[0133] S208: Obtain the operating parameters of the heat pump unit.

[0134] S209: Determine the operating status of the heat pump unit based on the operating parameters.

[0135] After the refrigerant charging equipment completes the refrigerant charging process of the heat pump unit based on the first instruction, real-time data is collected by sensors deployed on the heat pump unit, such as pressure sensors and temperature sensors, to obtain the operating parameters of the heat pump unit, such as the condenser high pressure value and the evaporator low pressure value. The operating parameters are used to indicate the real-time operating status of the heat pump unit.

[0136] Based on the acquired real-time operating parameters, the real-time operating parameters are compared with standard operating parameter values ​​to determine the operating status of the heat pump unit. Specifically, if the real-time operating parameters are within a preset range, the heat pump unit is determined to be in a normal state; if the real-time operating parameters exceed the preset range, the heat pump unit is determined to be in an abnormal state.

[0137] When the operating state is abnormal, a refrigerant charge adjustment message is generated. This message includes the specific values ​​of the abnormal operating parameters and the type of abnormality, such as high-pressure abnormality, low-pressure abnormality, or superheat abnormality. The charge adjustment information is then sent to maintenance personnel so they can adjust the refrigerant charge of the heat pump unit accordingly.

[0138] Once the refrigerant charge of the heat pump unit is complete, its operating parameters are acquired in real time. The system determines if the heat pump unit's operating status is abnormal. If an abnormality is detected, a refrigerant charge adjustment message is generated, prompting maintenance personnel to adjust the refrigerant charge accordingly. This helps to promptly identify and resolve operational problems with the heat pump unit, ensuring efficient and safe system operation.

[0139] Optionally, the demand parameters and the adjusted refrigerant charge can be used as optimization data to optimize the refrigerant prediction model.

[0140] The collected demand parameters and adjusted refrigerant charge amounts are organized to form an optimized dataset. This optimized dataset is then used to train and fine-tune the refrigerant prediction model, updating the model parameters.

[0141] Validate the updated model, for example, by testing its performance on a subset of datasets not used in the training. Confirm whether the updated model has improved accuracy in predicting refrigerant charge amounts.

[0142] If the updated model performs well, it can be applied to practical operations; if it performs poorly, the model parameters or algorithm structure need to be further adjusted, and the above process is repeated until the refrigerant charge prediction model converges.

[0143] Finally, the optimized refrigerant charge prediction model was applied to the actual refrigerant charge prediction of heat pump units, so as to more accurately predict and control the refrigerant charge and thus improve the efficiency of refrigerant charge determination.

[0144] The refrigerant charge determination method provided in this embodiment determines the refrigerant charge amount for the heat pump unit by identifying the user's required parameters and combining these parameters with the dimensional data of the refrigerant piping, condenser, and evaporator within the heat pump unit. This information is then summarized to obtain the first refrigerant charge amount. After the refrigerant charging equipment completes the refrigerant charge for the heat pump unit, the operating parameters of the heat pump unit are acquired. Based on these parameters, it is determined whether the heat pump unit is in an abnormal state. If the operating status indicates an abnormal state, a charge amount adjustment message is generated. This method achieves accurate prediction of the refrigerant charge amount for the heat pump unit, improving the efficiency of refrigerant charge amount determination.

[0145] Figure 3 This is a flowchart illustrating a method for determining refrigerant charge quantity provided in an embodiment of this application. Figure 3 This embodiment is... Figure 2 Based on the embodiments, a detailed explanation is provided of the method for determining the operating status of a heat pump unit according to operating parameters. For example... Figure 3 As shown, the refrigerant charge determination method provided in this embodiment includes:

[0146] S301: Determine the high pressure difference value of the condenser based on the high pressure value of the condenser and the standard high pressure value of the condenser.

[0147] Specifically, a pressure sensor deployed on the condenser of the heat pump unit is used to acquire the high-pressure value of the condenser. A standard high-pressure value for the condenser is determined, and the difference between the high-pressure value and the standard high-pressure value is calculated.

[0148] One possible implementation is that the high-pressure difference value equals the difference between the condenser high-pressure value and the high-pressure standard value. Specifically, if the pressure sensor deployed on the condenser in the heat pump unit sends a condenser high-pressure value of 2.5 Pa, and the condenser high-pressure standard value is 2.0 Pa, then the difference between the condenser high-pressure value and the high-pressure standard value is determined to be 0.5 Pa.

[0149] By determining the high-pressure difference value of the condenser, the operating status of the condenser in the heat pump unit can be further determined. This facilitates timely detection of anomalies and ensures the efficient and stable operation of the heat pump unit.

[0150] S302: Determine the first ratio between the condenser high pressure difference value and the condenser high pressure standard value.

[0151] Specifically, the ratio of the condenser high-pressure difference value to the condenser high-pressure standard value is calculated using the formula: condenser high-pressure difference value / condenser high-pressure standard value. One possible implementation is a difference value of 0.5 Pa and a condenser high-pressure standard value of 2.0 Pa, where the first ratio is 0.5 / 2.0 = 0.25.

[0152] Determine the first ratio between the condenser high-pressure difference value and the condenser high-pressure standard value. This helps assess whether the condenser in the heat pump unit is operating normally. The condenser's operating status indicates whether the refrigerant charge is up to standard; that is, an abnormal condenser operating status indicates that the refrigerant charge needs to be adjusted to ensure the efficient operation of the heat pump unit.

[0153] S303: Determine whether the first ratio is less than the first percentage threshold. If yes, proceed to step S304; otherwise, proceed to step S305.

[0154] S304: The condenser is confirmed to be operating normally.

[0155] S305: The condenser's operating status has been determined to be abnormal.

[0156] The first percentage threshold is set based on historical data and can be adjusted according to user needs. The condenser's operating status is determined by whether the first ratio is less than the first percentage threshold.

[0157] One possible implementation is as follows: the first ratio is 0.25, and the first proportion threshold is 0.1. A first proportion threshold of 0.25 not less than the first proportion threshold of 0.1 indicates that the condenser is operating abnormally and the refrigerant charge needs to be adjusted to ensure the heat pump unit can meet the user's required water temperature.

[0158] By determining whether the condenser in the heat pump unit is operating normally, abnormal conditions of the condenser can be detected in a timely manner, and adjustments can be made promptly, thereby ensuring the normal operation of the heat pump system.

[0159] S306: Determine the low-pressure difference value of the evaporator based on the low-pressure value of the evaporator and the standard low-pressure value of the evaporator.

[0160] Specifically, the low-pressure value of the evaporator is obtained by a pressure sensor deployed on the evaporator of the heat pump unit. A standard low-pressure value for the evaporator is determined, and the difference between the low-pressure value and the standard low-pressure value is calculated.

[0161] One possible implementation is that the low-pressure difference value is equal to the difference between the evaporator's low-pressure value and the low-pressure standard value. Specifically, if the pressure sensor deployed on the evaporator in the heat pump unit sends an evaporator low-pressure value of 0.95 Pa, and the evaporator low-pressure standard value is 1 Pa, then the difference between the evaporator low-pressure value and the low-pressure standard value is determined to be 0.05 Pa.

[0162] By determining the low-pressure difference value of the evaporator, the operating status of the evaporator in the heat pump unit can be further determined. This facilitates timely detection of abnormalities and ensures the efficient and stable operation of the heat pump unit.

[0163] S307: Determine the second ratio between the low-pressure difference value of the evaporator and the standard value of the high-pressure evaporator.

[0164] Specifically, the ratio of the evaporator low-pressure difference value to the evaporator low-pressure standard value is calculated using the formula: evaporator low-pressure difference value / evaporator low-pressure standard value. One possible implementation is a difference value of 0.05 Pa and an evaporator low-pressure standard value of 1.0 Pa, where the second ratio is 0.05 / 1.0 = 0.05.

[0165] Determine a second ratio between the evaporator low-pressure difference value and the evaporator low-pressure standard value. This helps assess whether the evaporator in the heat pump unit is operating normally. The evaporator's operating status indicates whether the refrigerant charge is up to standard; that is, an abnormal evaporator operating status indicates that the refrigerant charge needs to be adjusted to ensure the efficient operation of the heat pump unit.

[0166] S308: Determine whether the second ratio is less than the second percentage threshold. If yes, proceed to step S309; ​​otherwise, proceed to step S310.

[0167] S309: The evaporator is confirmed to be operating normally.

[0168] S310: The evaporator's operating status has been determined to be abnormal.

[0169] The second percentage threshold is set based on historical data and can be adjusted according to user needs. The evaporator's operating status is determined by whether the second ratio is less than the second percentage threshold.

[0170] One possible implementation is as follows: the second ratio is 0.05, and the second proportion threshold is 0.1. A second proportion threshold of 0.05 not less than the second proportion threshold of 0.1 indicates that the evaporator is operating normally.

[0171] By determining whether the evaporator in the heat pump unit is operating normally, abnormal conditions of the evaporator can be detected in a timely manner, and adjustments can be made promptly, thereby ensuring the normal operation of the heat pump system.

[0172] It is understood that step S306 is not explicitly related to steps S301-S305. Therefore, steps S301-S305 can be executed first, followed by steps S306-S310; or steps S306-S310 can be executed first, followed by steps S301-S305; or steps S301-S305 and steps S306-S310 can be executed simultaneously. This application does not impose any restrictions on this.

[0173] S311: Determine whether the condenser and evaporator are both operating normally. If yes, proceed to step S312; otherwise, proceed to step S313.

[0174] S312: Confirm that the heat pump unit is operating normally.

[0175] S313: Determines that the heat pump unit is in an abnormal operating state.

[0176] The operating status of the heat pump unit is determined by the operating status of the condenser and the evaporator.

[0177] Specifically, the heat pump unit is considered to be in normal operating condition only if both the condenser and evaporator are in normal operating condition; the heat pump unit is considered to be in abnormal operating condition if either the condenser or evaporator is in an abnormal operating condition; and the heat pump unit is considered to be in abnormal operating condition if both the condenser and evaporator are in an abnormal operating condition.

[0178] When the heat pump unit is in an abnormal operating state, a refrigerant charge adjustment message is generated. This message includes the specific values ​​of the abnormal operating parameters and the type of abnormality. The charge adjustment information is then sent to maintenance personnel so they can adjust the refrigerant charge of the heat pump unit accordingly, thereby ensuring the unit's normal operation.

[0179] The refrigerant charge determination method provided in this embodiment judges whether there is any abnormal operation in the condenser and evaporator by comparing the pressure difference between the condenser and evaporator with the standard value. Based on this, it comprehensively judges whether the overall operating status of the heat pump unit is normal, promptly detects abnormalities, and ensures that the heat pump unit operates stably with an appropriate refrigerant charge, thereby improving equipment operating efficiency and reducing the risk of failure.

[0180] Figure 4 A schematic diagram of the refrigerant charge determination device provided in this application. Figure 4 As shown, this application provides a refrigerant charge quantity determination device 400, which includes:

[0181] The determination module 401 is used to determine the required parameters of the heat pump unit in response to the acquired user requirements;

[0182] Processing module 402 is used to input the demand parameters into the refrigerant prediction model to obtain the first refrigerant charge corresponding to the demand parameters. The refrigerant prediction model is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge.

[0183] The processing module 402 is further configured to send a first instruction to the refrigerant charging device, so that the refrigerant charging device performs refrigerant charging on the heat pump unit based on the first instruction, wherein the first instruction includes: the first refrigerant charging amount.

[0184] Optionally, the determining module 401 is further configured to determine the volume of the refrigerant pipeline based on the diameter and length of the refrigerant pipeline, and to determine the required density of the refrigerant pipeline based on the temperature value and the pressure value.

[0185] The determining module 401 is further configured to determine the first sub-filling volume corresponding to the pipeline based on the volume of the pipeline and the required density;

[0186] The determining module 401 is further configured to determine the second sub-charge amount corresponding to the condenser based on the first density, the first volume ratio and the volume of the condenser;

[0187] The determining module 401 is further configured to determine the third sub-charge amount corresponding to the evaporator based on the second density, the second volume ratio, and the volume of the evaporator;

[0188] The determining module 401 is further configured to determine the first refrigerant charge corresponding to the operating parameters based on the first sub-charge amount, the second sub-charge amount, and the third sub-charge amount.

[0189] Optionally, the device further includes: an acquisition module 403;

[0190] The acquisition module 403 is used to acquire the operating parameters of the heat pump unit after determining that the refrigerant charging equipment has been charged. The operating parameters are used to indicate the real-time operating status of the heat pump unit.

[0191] The determining module 401 is further configured to determine the operating status of the heat pump unit based on the operating parameters;

[0192] The processing module 402 is also used to generate a refrigerant charge adjustment message when the operating state is in an abnormal state. The refrigerant charge adjustment message is used to prompt the user to adjust the refrigerant charge of the heat pump unit.

[0193] Optionally, the determining module 401 is further configured to determine the high pressure difference value of the condenser based on the high pressure value of the condenser and the high pressure standard value of the condenser;

[0194] The determining module 401 is further configured to determine the operating status of the condenser based on the condenser high pressure difference value and the condenser high pressure standard value;

[0195] The determining module 401 is further configured to determine the low pressure difference value of the evaporator based on the low pressure value of the evaporator and the standard low pressure value of the evaporator;

[0196] The determining module 401 is further configured to determine the operating status of the evaporator based on the low-pressure difference value of the evaporator and the high-pressure standard value of the evaporator;

[0197] The determining module 401 is further configured to determine the operating status of the heat pump unit based on the operating status of the condenser and the operating status of the evaporator.

[0198] Optionally, the device further includes: a determination module 404;

[0199] The determining module 401 is further configured to determine a first ratio between the condenser high pressure difference value and the condenser high pressure standard value;

[0200] The judgment module 404 is used to determine whether the first ratio is less than the first percentage threshold.

[0201] The determining module 401 is further configured to determine that the condenser is operating normally when the first ratio is less than the first ratio threshold.

[0202] The determining module 401 is further configured to determine that the operating state of the condenser is abnormal when the first ratio is not less than the first percentage threshold.

[0203] Optionally, the determining module 401 is further configured to determine a second ratio between the low-pressure difference value of the evaporator and the high-pressure standard value of the evaporator;

[0204] The judgment module 404 is also used to determine whether the second ratio is less than the second percentage threshold.

[0205] The determining module 401 is further configured to determine that the operating status of the evaporator is normal when the second ratio is less than the second ratio threshold.

[0206] The determining module 401 is further configured to determine that the operating state of the evaporator is abnormal when the second ratio is not less than the second percentage threshold.

[0207] Optionally, the judgment module 404 is further used to determine whether the operating status of the condenser and the evaporator is normal;

[0208] The determining module 401 is also used to determine that the heat pump unit is operating normally when both the condenser and the evaporator are operating normally.

[0209] The determining module 401 is further configured to determine that the heat pump unit is in an abnormal operating state when the operating states of the condenser and the evaporator are not both normal.

[0210] Optionally, the processing module 402 is further configured to use the demand parameters and the adjusted refrigerant charge as optimization data to optimize the refrigerant prediction model.

[0211] The refrigerant charge determination device provided in this application embodiment is similar in principle and technical effect to the implementation of each part of the aforementioned refrigerant charge determination method, and will not be described again here.

[0212] Figure 5 A schematic diagram of the structure of the electronic device provided in this application. Figure 5 As shown, this application provides an electronic device 500, which includes: a receiver 501, a transmitter 502, a processor 503, and a memory 504.

[0213] Receiver 501 is used to receive instructions and data;

[0214] Transmitter 502 is used to send commands and data;

[0215] Memory 504 is used to store instructions executed by the computer;

[0216] Processor 503 is used to execute computer execution instructions stored in memory 504 to implement the various steps of the refrigerant charge determination method in the above embodiments. For details, please refer to the relevant descriptions in the foregoing embodiments of the refrigerant charge determination method.

[0217] Optionally, the memory 504 can be either standalone or integrated with the processor 503.

[0218] When the memory 504 is set up independently, the electronic device also includes a bus for connecting the memory 504 and the processor 503.

[0219] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the refrigerant charge determination method as described above in the electronic device.

[0220] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the refrigerant charge determination method described in any of the foregoing embodiments.

[0221] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0222] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for determining refrigerant charge quantity, characterized in that, The method comprises: Based on the obtained user requirements, determine the required parameters for the heat pump unit; The demand parameters are input into the refrigerant prediction model to obtain the first refrigerant charge corresponding to the demand parameters. The refrigerant prediction model is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge. A first instruction is sent to the refrigerant charging device to cause the refrigerant charging device to charge the heat pump unit with refrigerant based on the first instruction. The first instruction includes: the first refrigerant charging amount.

2. The method according to claim 1, characterized in that, The heat pump unit includes: refrigerant piping, a condenser, and an evaporator. The required parameters include: temperature and pressure values ​​of the refrigerant piping, a first density and a first volumetric ratio of the condenser, and a second density and a second volumetric ratio of the evaporator. Inputting the required parameters into a refrigerant prediction model to obtain the corresponding first refrigerant charge includes: Based on the diameter and length of the refrigerant pipeline, determine the volume of the refrigerant pipeline; based on the temperature and pressure values, determine the required density of the refrigerant pipeline. Based on the volume of the pipeline and the required density, determine the first sub-filling volume corresponding to the pipeline; The second sub-charge amount corresponding to the condenser is determined based on the first density, the first volume ratio, and the volume of the condenser. The third sub-charge amount corresponding to the evaporator is determined based on the second density, the second volume ratio, and the volume of the evaporator. Based on the first sub-charge amount, the second sub-charge amount, and the third sub-charge amount, the first refrigerant charge amount corresponding to the operating parameters is determined.

3. The method according to claim 1, characterized in that, The method further includes: After the refrigerant charging equipment has been charged, the operating parameters of the heat pump unit are obtained. The operating parameters are used to indicate the real-time operating status of the heat pump unit. Based on the operating parameters, the operating status of the heat pump unit is determined, and when the operating status is abnormal, a refrigerant charge adjustment message is generated to prompt the user to adjust the refrigerant charge of the heat pump unit.

4. The method according to claim 3, characterized in that, The operating parameters include: condenser high pressure value and evaporator low pressure value. Determining the operating status of the heat pump unit based on the operating parameters includes: The high pressure difference value of the condenser is determined based on the high pressure value of the condenser and the standard high pressure value of the condenser. The operating status of the condenser is determined based on the difference value of the condenser high pressure and the standard value of the condenser high pressure. The low-pressure difference value of the evaporator is determined based on the low-pressure value of the evaporator and the standard low-pressure value of the evaporator. The operating status of the evaporator is determined based on the low-pressure difference value and the high-pressure standard value of the evaporator. The operating status of the heat pump unit is determined based on the operating status of the condenser and the operating status of the evaporator.

5. The method according to claim 4, characterized in that, The step of determining the operating status of the condenser based on the high-pressure difference value and the high-pressure standard value of the condenser includes: Determine a first ratio between the condenser high pressure difference value and the condenser high pressure standard value; Determine whether the first ratio is less than the first percentage threshold; If so, then the condenser is determined to be operating normally; If not, then the condenser is determined to be in an abnormal operating state; The step of determining the operating status of the evaporator based on the low-pressure difference value and the high-pressure standard value of the evaporator includes: Determine a second ratio between the low-pressure difference value of the evaporator and the standard value of the high-pressure evaporator; Determine whether the second ratio is less than the second percentage threshold; If so, then the evaporator is determined to be operating normally; If not, then the evaporator is determined to be in an abnormal operating state.

6. The method according to claim 4, characterized in that, Determining the operating status of the heat pump unit based on the operating status of the condenser and the operating status of the evaporator includes: Determine whether the condenser and evaporator are both operating normally; If both the condenser and evaporator are operating normally, the heat pump unit is determined to be operating normally. If the condenser and evaporator are not both operating normally, the heat pump unit is determined to be in an abnormal operating state.

7. The method according to claim 6, characterized in that, The method further includes: The required parameters and the adjusted refrigerant charge amount are used as optimization data to optimize the refrigerant prediction model.

8. A device for determining refrigerant charge amount, characterized in that, The device comprises: The determination module is used to determine the required parameters of the heat pump unit in response to the acquired user requirements; The processing module is used to input the demand parameters into the refrigerant prediction model to obtain the first refrigerant charge corresponding to the demand parameters. The refrigerant prediction model is trained and optimized based on historical operating parameters and corresponding historical refrigerant charge. The processing module is further configured to send a first instruction to the refrigerant charging device, so that the refrigerant charging device performs refrigerant charging on the heat pump unit based on the first instruction, wherein the first instruction includes: the first refrigerant charging amount.

9. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the refrigerant charge determination method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the refrigerant charge determination method as described in any one of claims 1 to 7.

Images