Air conditioner control method, electronic equipment, air conditioner and storage medium

Abstract

The invention discloses an air conditioner control method, electronic equipment, an air conditioner and a storage medium. The method is applied to the air conditioner capable of refrigerating based on a natural cold source and comprises the steps that whether working parameters of a refrigerant pump included in the air conditioner need to be adjusted or not is judged according to operating parameters of a refrigerating assembly included in the air conditioner and operating state judgment rules corresponding to the refrigerating assembly; under the condition that it is determined that the working parameters of the refrigerant pump need to be adjusted, target working parameters of the refrigerant pump are determined according to set adjusting rules and correspondingly adjusted; the refrigeration assembly comprises a refrigerant pump and / or an evaporator. The target working parameters of the refrigerant pump comprise the rotating speed. According to the scheme, the working parameters of the refrigerant pump used for natural cold source refrigeration are controlled by continuously paying attention to the actual operation condition of the air conditioner, so that related assemblies, achieving natural cold source refrigeration, of the air conditioner system are kept in the optimal coordination state, and the optimal energy efficiency is achieved.

Description

Technical Field

[0001] The present disclosure relates to, but is not limited to, the technical field of air-conditioning control, and in particular to an air-conditioning control method, an electronic device, an air-conditioner, and a storage medium. Background Art

[0002] Based on the characteristics of data center cooling throughout the year, traditional year-round compressor cooling can no longer meet customers' requirements for data center PUE (Power Usage Effectiveness). Therefore, when the ambient temperature is lower than the room temperature, solutions using natural cold sources for cooling (direct evaporative cooling, indirect evaporative cooling, refrigerant pump circulation and other technologies) have begun to be continuously promoted in the industry. Among some feasible technical solutions, refrigerant pumps are used to implement natural cold source cooling solutions. How to continuously optimize the natural cold source cooling solution and maintain its optimal working efficiency is a direction that technicians in this field continue to explore and improve. Summary of the invention

[0003] The embodiments of the present disclosure provide an air-conditioning control method, an electronic device, an air-conditioner and a storage medium. According to the refrigerant pump and / or evaporator included in the air-conditioner and the corresponding operating status judgment rules, it is determined to adjust the working parameters of the refrigerant pump included in the air-conditioner. By continuously paying attention to the actual operating conditions of the air-conditioner, the working parameters of the refrigerant pump used for natural cold source refrigeration can be controlled, so that the relevant components of the air-conditioning system that realizes natural cold source refrigeration can maintain an optimal coordination state and achieve optimal energy efficiency.

[0004] The present disclosure provides an air conditioning control method, which is applied to an air conditioning capable of cooling based on a natural cold source, including:

[0005] According to the operating parameters of the refrigeration component included in the air conditioner and the operating state determination rule corresponding to the refrigeration component, determining whether the refrigerant pump included in the air conditioner needs to adjust the operating parameters;

[0006] In the case where it is determined that the operating parameters of the refrigerant pump need to be adjusted, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting them accordingly;

[0007] Wherein, the refrigeration component includes: a refrigerant pump and / or an evaporator;

[0008] The target operating parameters of the refrigerant pump include: rotation speed.

[0009] The present disclosure also provides an electronic device, including:

[0010] one or more processors;

[0011] a storage device for storing one or more programs,

[0012] When the one or more programs are executed by the one or more processors, the one or more processors implement the air conditioning control method as described in any embodiment of the present disclosure.

[0013] The embodiment of the present disclosure also provides an air conditioner capable of refrigeration based on a natural cold source, comprising a compressor, a condenser, an evaporator, a liquid storage tank, a refrigerant pump, a throttling element, and a control unit.

[0014] The control unit is configured to determine whether the refrigerant pump needs to adjust the working parameters according to the operating parameters of the refrigeration component included in the air conditioner and the operating state determination rule corresponding to the refrigeration component;

[0015] In the case where it is determined that the operating parameters of the refrigerant pump need to be adjusted, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting them accordingly;

[0016] Wherein, the refrigeration component comprises: the refrigerant pump and / or the evaporator;

[0017] The target operating parameters of the refrigerant pump include: rotation speed.

[0018] An embodiment of the present disclosure further provides a storage medium, in which a computer program is stored, wherein the computer program is configured to execute the air conditioning control method as described in any embodiment of the present disclosure when running.

[0019] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the solutions of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a flow chart of an air conditioning control method in an embodiment of the present disclosure;

[0022] Figure 2 It is a schematic diagram of the correction result of the function of the relationship between the load rate and the refrigerant pump speed in the embodiment of the present disclosure;

[0023] Figure 3 This is a flow chart of another air conditioning control method in an embodiment of the present disclosure;

[0024] Figure 4 This is a flow chart of another air conditioning control method in an embodiment of the present disclosure;

[0025] Figure 5 This is a flow chart of another air conditioning control method in an embodiment of the present disclosure;

[0026] Figure 6 It is a schematic diagram of an air conditioning structure in an embodiment of the present disclosure.

[0027] The realization of the objectives, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the scheme of the present invention to clearly and completely describe the technical solutions in the embodiments of the scheme of the present invention. Obviously, the described embodiments are only part of the embodiments of the scheme of the present invention, rather than all the embodiments. Based on the embodiments in the scheme of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the scheme of the present invention.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, in the scheme of the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the scheme of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the scheme of the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the scheme of the present invention can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] In some feasible air conditioning solutions, a refrigerant pump is added to the original circulation system to realize natural cold source cooling. Taking the fluorine pump air conditioning system as an example, it is generally impossible to match the appropriate fluorine pump operating speed according to different refrigerant / refrigerant installation piping lengths and / or indoor and outdoor unit installation heights, and it is easy for the fan air volume to not match the pump flow rate, such as the fan has a large air volume and the fluorine pump has a small flow rate, or the fan has a small air volume and the fluorine pump has a large flow rate, which makes the air conditioning system energy efficiency poor and is not conducive to energy saving. In this regard, in these feasible solutions, it is impossible to simply evaluate the attenuation of the fluorine pump in the air conditioning system under the standard refrigerant / refrigerant installation piping length and / or standard indoor and outdoor unit installation height according to the actual different refrigerant / refrigerant installation piping lengths and / or indoor and outdoor unit installation heights, and thus it is impossible to make targeted adjustments.

[0034] The present disclosure provides an air conditioning control method, which is applied to an air conditioning system including natural cold source refrigeration, such as Figure 1 As shown, including:

[0035] Step 110, judging whether the refrigerant pump included in the air conditioner needs to adjust the working parameters according to the operating parameters of the refrigeration component included in the air conditioner and the operating state judgment rule corresponding to the refrigeration component;

[0036] Step 120, when it is determined that the operating parameters of the refrigerant pump need to be adjusted, determine the target operating parameters of the refrigerant pump according to a set adjustment rule and adjust accordingly;

[0037] Wherein, the refrigeration component includes: a refrigerant pump and / or an evaporator;

[0038] The target operating parameters of the refrigerant pump include: speed

[0039] In some exemplary embodiments, the refrigerant pump includes: a fluorine pump.

[0040] In some exemplary embodiments, the cooling medium conveying equipment, also referred to as cooling medium conveying assembly, includes: a fan or a water pump.

[0041] In some exemplary embodiments, the operating status of the cooling medium conveying device is indicated by the cooling medium conveying flow rate.

[0042] In some exemplary embodiments, the operating status of the refrigerant pump is indicated by a pump flow rate.

[0043] It should be noted that the operation status determination rule corresponding to the refrigeration component is used to determine whether the operation status of the cooling medium conveying device of the air conditioner matches the operation status of the refrigerant pump of the air conditioner;

[0044] In case of mismatch, it is determined that the refrigerant pump included in the air conditioner needs to adjust the working parameters.

[0045] In some exemplary embodiments, whether the operating state of the cooling medium conveying device of the air conditioner matches the operating state of the refrigerant pump of the air conditioner means whether the cooling medium conveying flow rate and the fluorine pump flow rate match. Taking the fan and the fluorine pump as an example, when the fluorine pump has a small flow rate and the fan has a small air volume, it means that the operating states of the fan and the fluorine pump match; when the fluorine pump has a small flow rate and the fan has a large air volume, it means that the operating states of the fan and the fluorine pump do not match; when the fluorine pump has a large flow rate and the fan has a large air volume, it means that the operating states of the fan and the fluorine pump match; when the fluorine pump has a large flow rate and the fan has a small air volume, it means that the operating states of the fan and the fluorine pump do not match.

[0046] In the case where the operating states of the two do not match, the air conditioning system efficiency will be reduced, so adjustments need to be made to achieve matching after the adjustments. The operating parameters of the refrigerant pump can be adjusted to increase or decrease the pump flow rate.

[0047] It can be understood that whether the operating status of the cold medium conveying device of the air conditioner is consistent with the operating status of the refrigerant pump of the air conditioner can be judged in a variety of ways. It can be judged directly based on the operating parameters of the cold medium conveying device and / or the refrigerant pump; for example, it can be judged based on the flow rate of the fan and the flow rate of the fluorine pump, or it can be judged only based on the attenuation rate of the refrigerant pump.

[0048] Optionally, the determination may be based on operating parameters of one or more other air-conditioning components in the air-conditioning system that can indirectly reflect the matching situation; for example, the determination may be based on the outlet dryness of the evaporator in the air-conditioning system, without limitation to the specific aspects of the examples disclosed herein.

[0049] Among them, the judgment standard of whether it matches is determined according to the different corresponding selected operating parameters, which can characterize that the current operating status of the cooling medium transportation equipment and the refrigerant pump is able to ensure that the air conditioner operates in a higher energy efficiency range; it is not limited to specific judgment standards.

[0050] In some exemplary embodiments, the determination is made based on the refrigerant pump attenuation rate, and the matching criterion is whether the refrigerant pump attenuation rate is greater than a attenuation rate threshold. If it is greater than the attenuation rate threshold, it is determined to be mismatched, otherwise, it is determined to be matched.

[0051] In some exemplary embodiments, the judgment is made based on the evaporator outlet dryness, and the matching criterion is whether the evaporator outlet dryness is greater than a first dryness threshold or less than a second dryness threshold. If it is greater than the first dryness threshold or less than the second dryness threshold, it is determined to be mismatched; otherwise, it is determined to be matched.

[0052] In some exemplary embodiments, when the refrigeration assembly includes a refrigerant pump,

[0053] The operating parameters of the refrigerant pump include: refrigerant pump flow attenuation rate;

[0054] The operating status judgment rules corresponding to the refrigerant pump include:

[0055] When the flow attenuation rate of the refrigerant pump is greater than a set attenuation rate threshold, it is determined that the refrigerant pump needs to adjust the operating parameters.

[0056] The attenuation rate threshold is flexibly set according to needs and is not limited to a specific value.

[0057] It can be understood that in this embodiment, whether the working parameters need to be adjusted is determined based on the flow attenuation condition of the refrigerant pump; the refrigerant pump flow attenuation rate is greater than the set attenuation rate threshold, indicating that the refrigerant pump flow attenuation is large, and the working parameters need to be adjusted to increase the refrigerant pump flow.

[0058] In some exemplary embodiments, the refrigerant pump flow attenuation rate is calculated based on the current pump flow of the refrigerant pump and a reference pump flow; wherein the reference pump flow is a preset pump flow corresponding to the current load rate of the air conditioner.

[0059] It should be noted that the refrigerant pump flow attenuation rate = (reference pump flow - current pump flow) / reference pump flow. For example, if the reference pump flow is 1000 and the current pump flow is 900, then the refrigerant pump flow attenuation rate = (1000-900) / 1000 = 10%. It can be understood that the refrigerant pump flow attenuation rate is the attenuation rate of the current flow compared to the reference pump flow. Among them, the pump flow can be the corresponding refrigerant volume flow, or the corresponding refrigerant mass flow.

[0060] In some exemplary embodiments, the current pump flow rate Q1 of the refrigerant pump is determined according to a pump flow rate-power relationship function Q1 (P1): Q1=Q1(P1); wherein P1 is the power of the refrigerant pump, ie, the current power of the refrigerant pump.

[0061] In some exemplary embodiments, the pump flow-power relationship function Q1 (P1) can be obtained in advance from the flow-power performance curve of the refrigerant pump with fixed frequency or variable frequency, or obtained by regression calculation of experimental test data, without limitation to specific aspects. The specific aspects of determining the function are not discussed in detail in this application.

[0062] The reference pump flow is a preset pump flow corresponding to the current load rate of the air conditioner. Multiple sets of corresponding relationships between load rates and pump flows are preset in the air conditioning system; the corresponding relationship is implemented in the form of a mapping table, a mapping function, a mapping curve or a mapping model, and is not limited to a specific aspect.

[0063] In some exemplary embodiments, the current load rate of the air conditioner is calculated based on the current flow rate Q2 of the cooling medium conveying device included in the air conditioner and the rated cooling capacity of the air conditioning system. It can be understood that the calculation of the current load rate of the air conditioner can be performed according to the relevant achievable scheme in the art, and the detailed calculation method is not further discussed in this application.

[0064] Among them, the current flow rate Q2 of the cooling medium conveying equipment is determined according to the flow-power relationship function Q2(P2) of the cooling medium conveying equipment: Q2=Q2(P2), P2 is the power of the cooling medium conveying equipment, that is, the current power of the cooling medium conveying equipment.

[0065] In some exemplary embodiments, the flow-power relationship function Q2 (P2) of the cooling medium conveying equipment can be obtained in advance from the flow-power performance curve of the cooling medium conveying equipment with a fixed frequency or variable frequency, or can be obtained by regression calculation of experimental test data, without limitation to specific aspects. The specific aspects of determining the function are not discussed in detail in this application.

[0066] In some exemplary embodiments, the cooling medium conveying device includes an indoor fan.

[0067] In some exemplary embodiments, the current load rate Load of the air conditioner is based on the flow rate Q2 of the cooling medium conveying device and the rated cooling capacity of the air conditioner.

[0068] In some exemplary embodiments, the flow rate Q2 of the cooling medium delivery device is determined according to the first system operating parameter and the system characteristic function of the air conditioner;

[0069] The first system operating parameters of the air conditioner include one or more of the following:

[0070] Indoor temperature T1, outdoor temperature T2, cooling medium transport equipment speed percentage rpm%, cooling medium transport equipment power P2, cooling medium transport equipment inlet temperature T3, cooling medium transport equipment outlet temperature T4, refrigerant pump speed rpm1 and refrigerant pump power P1.

[0071] The system characteristic functions of the air conditioner include:

[0072] Pump flow-power relationship function Q1 (P1) and cooling medium transport equipment flow-power relationship function Q2 (P2).

[0073] In some exemplary embodiments, the flow rate Q2 of the cooling medium conveying device is determined according to the cooling medium conveying device flow rate-power relationship function Q2 (P2) and the current cooling medium conveying device power P2.

[0074] In some exemplary embodiments, when the refrigeration component includes a refrigerant pump and the target operating parameter includes a target speed, determining the target operating parameter of the refrigerant pump according to a set adjustment rule and adjusting it accordingly includes:

[0075] The target speed of the refrigerant pump is determined according to the following formula:

[0076] rpm'=rpm(Load) / (1-η)

[0077] Wherein, rpm' is the target speed of the refrigerant pump, rpm(Load) is the relationship function between the current load rate and the refrigerant pump speed, Load is the current load rate of the air conditioner, and η is the refrigerant pump flow attenuation rate;

[0078] The rotation speed of the refrigerant pump is adjusted accordingly according to the determined target rotation speed.

[0079] In other words, rpm(Load) in the above calculation formula represents the function value obtained by substituting the current load rate into the function of the relationship between the current load rate and the refrigerant pump speed, that is, the refrigerant pump speed corresponding to the current load rate. The function of the relationship between the current load rate and the refrigerant pump speed is an initial function or a modified function.

[0080] For example, the reference pump flow is 1000, the current pump flow is 800, the attenuation rate threshold = 15%, the current load rate = 80%, and according to the current function rpm(Load), rpm(80%) = 10000, then the refrigerant pump flow attenuation rate η = (1000-800) / 1000 = 20%. At this time, it is determined that the refrigerant pump needs to adjust the working parameters, and the target speed is determined to be 10000 / (1-20%) = 12500, that is, the speed of the refrigerant pump needs to be increased.

[0081] It can be understood that the load rate and refrigerant pump speed relationship function reflects the relationship between the load rate and the refrigerant pump speed, that is, according to the load rate, the function value determined by the function is the refrigerant pump speed. The function can be implemented in the form of a mapping table, a mapping curve or a mapping model, and is not limited to a specific aspect.

[0082] In some exemplary embodiments, the method further comprises:

[0083] After the target operating parameters of the refrigerant pump are determined according to the set adjustment rules and adjusted accordingly, the load rate and refrigerant pump speed relationship function is corrected according to the following method:

[0084] rpm'(Load)=rpm(Load) / (1-η);

[0085] Among them, rpm'(Load) is the relationship function between the load rate and the refrigerant pump speed after correction, rpm(Load) is the relationship function between the load rate and the refrigerant pump speed before correction, η is the refrigerant pump flow attenuation rate, and Load is the current load rate of the air conditioner.

[0086] It can be understood that rpm'(Load) = rpm(Load) / (1-η) means that the function value of the relationship between the load rate and the refrigerant pump speed is corrected, that is, for the same load rate, the function value calculated using the corrected function = the function value calculated using the function before correction divided by (1-η).

[0087] For example, the load rate is 80%, and the speed rpmx is calculated according to the function rpm(Load) before correction, which is rpm(80%)=10000. The refrigerant pump flow attenuation rate η=20%, and the correction is made according to η, rpm'(Load)=rpm(Load) / (1-η). Then, the speed is calculated according to the function rpm'(Load) after correction, which is rpm'x=rpm'(80%)=10000 / (1-20%)=12500. More examples are not listed here one by one.

[0088] In some exemplary embodiments, the function rpm(Load) curve before correction and the function rpm'(Load) curve after correction, such as Figure 2 shown.

[0089] In some exemplary embodiments, when the refrigeration assembly includes an evaporator,

[0090] The operating parameters of the evaporator include: evaporator outlet dryness;

[0091] The operating state judgment rules corresponding to the evaporator include:

[0092] When the dryness at the evaporator outlet is greater than a first dryness threshold or less than a second dryness threshold, it is determined that the refrigerant pump needs to adjust the working parameters; wherein the first dryness threshold is greater than the second dryness threshold.

[0093] The first dryness threshold and the second dryness threshold are flexibly set according to needs and are not limited to specific values.

[0094] It can be understood that in this embodiment, whether the working parameters need to be adjusted is determined based on the outlet dryness of the evaporator; if the outlet dryness of the evaporator is greater than the first dryness threshold, it means that the evaporator has good performance, and the speed of the refrigerant pump can be appropriately increased to speed up the refrigerant circulation speed, thereby increasing the cooling capacity and improving the air conditioning energy efficiency; if the outlet dryness of the evaporator is greater than the second dryness threshold, it means that the evaporator has relatively poor performance, and the speed of the refrigerant pump can be appropriately reduced to slow down the refrigerant circulation speed to improve the evaporation performance.

[0095] In some exemplary embodiments, the evaporator outlet dryness is determined according to the outlet enthalpy value of the evaporator and the outlet temperature of the evaporator.

[0096] In some exemplary embodiments, when the refrigeration assembly includes an evaporator, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting accordingly includes:

[0097] When the evaporator outlet dryness is greater than a first dryness threshold, determining that the target speed is greater than a current speed of the refrigerant pump;

[0098] When the evaporator outlet dryness is less than a second dryness threshold, determining that the target speed is less than a current speed of the refrigerant pump;

[0099] The rotation speed of the refrigerant pump is adjusted accordingly according to the determined target rotation speed.

[0100] In some exemplary embodiments, the outlet enthalpy of the evaporator is determined based on the refrigerant pump inlet mass flow rate, the air conditioning system cooling capacity and the evaporator inlet enthalpy. It can be implemented according to relevant feasible solutions in the field, and the detailed calculation method is not further discussed in this application.

[0101] In some exemplary embodiments, the evaporator inlet enthalpy is calculated according to the temperature and pressure before the throttle valve.

[0102] In some exemplary embodiments, the evaporator inlet enthalpy value is determined specifically according to a second system operating parameter and a system characteristic function of the air conditioner;

[0103] The second system operating parameters of the air conditioner include one or more of the following:

[0104] Indoor temperature T1, outdoor temperature T2, cooling medium conveying equipment speed percentage rpm%, cooling medium conveying equipment power P2, cooling medium conveying equipment inlet temperature T3, cooling medium conveying equipment outlet temperature T4, refrigerant pump speed rpm1, refrigerant pump power P1, refrigerant pump inlet pressure Pr1, refrigerant pump outlet pressure Pr2, refrigerant pump inlet temperature T5, refrigerant pump outlet temperature T6, evaporator inlet temperature T7 and evaporator outlet temperature T8.

[0105] The system characteristic functions of the air conditioner include one or more of the following:

[0106] Pump flow-power relationship function Q1 (P1) and cooling medium transport equipment flow-power relationship function Q2 (P2).

[0107] It can be understood that the specific calculation of the evaporator inlet enthalpy value can be performed according to relevant feasible solutions in the art, and the detailed calculation method will not be further discussed in this application.

[0108] In some exemplary embodiments, the cooling capacity of the air conditioning system is determined according to the following second system operating parameters:

[0109] Indoor fan air volume, indoor fan inlet temperature T3 and indoor fan outlet temperature T4.

[0110] It can be understood that the cooling capacity of the air-conditioning system can be implemented according to relevant feasible solutions in the art, and the detailed calculation method will not be further discussed in this application.

[0111] In some exemplary embodiments, the refrigerant pump inlet mass flow rate is determined according to the following second system operating parameter and the system characteristic function:

[0112] The refrigerant pump speed rpm1, the refrigerant pump current power P1 and the refrigerant pump flow-power relationship function Q1(P1) determine the refrigerant pump inlet volume flow rate;

[0113] The refrigerant pump inlet mass flow rate is then determined based on the refrigerant pump inlet volume flow rate, the refrigerant pump inlet temperature T5 and the refrigerant pump inlet pressure Pr1.

[0114] It can be understood that the calculation of the refrigerant pump inlet mass flow rate can be performed according to relevant feasible solutions in the art, and the detailed calculation method will not be further discussed in this application.

[0115] In some exemplary embodiments, Figure 3 As shown, the method also includes:

[0116] Step 101, judging whether the air conditioner is in a stable operating state according to the change of the first system operating parameter of the air conditioner within a preset time;

[0117] When it is determined that the air conditioner is in a stable operating state, a step of determining whether a refrigerant pump included in the air conditioner needs to adjust operating parameters is performed (i.e., step 110);

[0118] The first system operating parameters of the air conditioner include one or more of the following:

[0119] Indoor temperature T1, outdoor temperature T2, cooling medium transport equipment speed percentage rpm%, cooling medium transport equipment power P2, cooling medium transport equipment inlet temperature T3, cooling medium transport equipment outlet temperature T4, refrigerant pump speed rpm1 and refrigerant pump power P1.

[0120] It should be noted that the first system operating parameter and the second system operating parameter are used to distinguish the system operating parameters used in different steps, and the two may be the same, different, or partially the same.

[0121] In some exemplary embodiments, judging whether the air conditioner is in a stable operating state according to a change in a first system operating parameter of the air conditioner within a preset time includes:

[0122] Within the set time, if the absolute value of the change in the first system operating parameter is less than the change threshold of the corresponding parameter, it is determined that the air conditioner is in a stable operating state; if it is greater than or equal to the change threshold of the corresponding parameter, it is determined that the air conditioner is not in a stable operating state;

[0123] or,

[0124] Within the set time, if the absolute value of the change rate of the first system operating parameter is less than the change rate threshold of the corresponding parameter, it is determined that the air conditioner is in a stable operating state; if it is greater than or equal to the change amount threshold of the corresponding parameter, it is determined that the air conditioner is not in a stable operating state.

[0125] For example, the first system operating parameters include: the rotation speed percentage of the cooling medium conveying device. Within the set 5 minutes, the absolute value of the change rate of the rotation speed percentage of the cooling medium conveying device is less than the rotation speed percentage change rate threshold (3%), and the air conditioner is determined to be in a stable operating state. Otherwise, it is not in a stable operating state, that is, it is in an unstable operating state. For another example, the first system operating parameters include: the rotation speed percentage of the cooling medium conveying device and the inlet temperature of the cooling medium conveying device. Within the set 5 minutes, the absolute value of the change rate of the rotation speed percentage of the cooling medium conveying device is less than the rotation speed percentage change rate threshold (3%) and the absolute value of the change rate of the inlet temperature of the cooling medium conveying device is less than the inlet temperature change rate threshold (2%), and the air conditioner is determined to be in a stable operating state. Otherwise, it is not in a stable operating state, that is, it is in an unstable operating state. In the absence of conflict, the first system operating parameters include one or more of the above, and the corresponding judgment criteria for whether it is in a stable state can be determined accordingly, which is not limited to the aspects of the examples of the present disclosure, and more examples are not recorded here one by one.

[0126] In some exemplary embodiments, the method further comprises:

[0127] If it is determined that the system is not in a stable operating state, steps 110 to 120 are performed again after the operating parameters of the refrigeration component are obtained next time.

[0128] In some exemplary embodiments, the method further comprises:

[0129] Step 100, determining whether the air conditioner is in a refrigerant pump operation mode;

[0130] When it is determined that the air conditioner is in the refrigerant pump operation mode, the step of determining whether the refrigerant pump included in the air conditioner needs to adjust the working parameters (i.e., step 110) is performed;

[0131] or,

[0132] When it is determined that the air conditioner is in the refrigerant pump operation mode, a step of determining whether the air conditioner is in a stable operation state (ie, step 101 ) is performed.

[0133] It can be understood that the air conditioner is in the refrigerant pump operation mode, which means that the air conditioner is in the full natural cold source cooling mode.

[0134] It should be noted that in the implementation of the present disclosure, when it is not specifically stated that it is "rated", "designed", "preset / set", or "target", the parameter values ​​of the system operating parameters of the relevant air conditioner, the operating parameters of the refrigeration component, and the working parameters involved in the calculation or judgment are all the current parameter values ​​of these parameters. They are directly obtained or indirectly calculated based on the sensors included in the air conditioning system. According to the records of each embodiment, those skilled in the art can clearly know this aspect.

[0135] The embodiment of the present disclosure also provides an air conditioning control method, wherein the refrigeration component includes: a refrigerant pump, the target operating parameters include: a rotation speed, the refrigerant pump includes: a fluorine pump, the cooling medium delivery device includes: an indoor fan, and the operating parameters of the refrigerant pump include: a fluorine pump flow attenuation rate, such as Figure 4 As shown, including:

[0136] Step 400, the air conditioner starts running;

[0137] Step 410, determining whether the air conditioner is in the fluorine pump operation mode, if yes, executing step 420, if no, waiting for the next control time to arrive;

[0138] Step 420, obtaining the current first system operating parameters of the air conditioner;

[0139] Step 430, judging whether the air conditioner is in a stable operating state according to the change of the first system operating parameter within a preset time; if not, waiting for the next control time to arrive; if stable, executing step 430;

[0140] Step 440, obtaining the current fluorine pump flow attenuation rate;

[0141] Step 450, judging whether the working parameters of the fluorine pump need to be adjusted according to the current fluorine pump flow attenuation rate and the set attenuation rate threshold; if adjustment is required, executing step 460; if adjustment is not required, waiting for the next control time to arrive;

[0142] Step 460, determining the target speed of the fluorine pump and adjusting it accordingly;

[0143] Step 470, correcting the function of the relationship between the load factor and the refrigerant pump speed.

[0144] The embodiment of the present disclosure also provides an air conditioning control method, wherein the refrigeration component includes: an evaporator, the target operating parameters include: a rotation speed, the refrigerant pump includes: a fluorine pump, the cooling medium delivery device includes: an indoor fan, and the operating parameters of the refrigerant pump include: an evaporator outlet dryness, such as Figure 5 As shown, including:

[0145] Step 500, the air conditioner is started, and it is determined whether the air conditioner is in the fluorine pump operation mode. If yes, step 510 is executed. If not, the next control time is waited for.

[0146] Step 510, obtaining the current second system operating parameters of the air conditioner;

[0147] Step 520, determining the indoor fan air volume, that is, the evaporator inlet enthalpy value, according to the second system operation parameter and the system function;

[0148] Step 530, the indoor fan air volume, the indoor fan inlet temperature T3 and the indoor fan outlet temperature T4 determine the cooling capacity of the air conditioning system;

[0149] Step 540, determining the inlet volume flow rate of the fluorine pump by the current rotation speed rpm1 of the fluorine pump, the current power P1 of the fluorine pump and the flow-power relationship function Q1 (P1) of the fluorine pump;

[0150] Step 550, determining the fluorine pump inlet mass flow rate according to the fluorine pump inlet volume flow rate, the fluorine pump inlet temperature T5 and the fluorine pump inlet pressure Pr1;

[0151] Step 560, determining the enthalpy value at the evaporator outlet according to the fluorine pump inlet mass flow rate, the system cooling capacity and the enthalpy value at the evaporator inlet;

[0152] Step 570, determining whether the enthalpy value at the evaporator outlet is greater than the first dryness threshold or less than the second dryness threshold, if yes, executing step 580, if no, waiting for the next control time to arrive;

[0153] Step 580, determine the target speed of the fluorine pump according to the set adjustment rule and adjust it accordingly.

[0154] It should be noted that in some exemplary embodiments, the refrigeration component includes: an evaporator and a fluorine pump, the target operating parameters include: a rotation speed, the refrigerant pump includes: a fluorine pump, the cooling medium delivery device includes: an indoor fan, and the operating parameters of the refrigerant pump include: a fluorine pump flow attenuation rate and an evaporator outlet dryness. In the absence of a conflict, the above-mentioned scheme of judging whether the fluorine pump operating parameters are needed based on the fluorine pump flow attenuation rate and the scheme of judging whether the fluorine pump operating parameters are needed based on the evaporator outlet dryness can be combined.

[0155] The present disclosure also provides an electronic device, including:

[0156] one or more processors;

[0157] a storage device for storing one or more programs,

[0158] When the one or more programs are executed by the one or more processors, the one or more processors implement the air conditioning control method as described in any embodiment of the present disclosure.

[0159] The disclosed embodiment also provides an air conditioner capable of refrigerating based on a natural cold source, such as Figure 6 As shown, it includes a compressor 610, a condenser 620, an evaporator 630, a liquid storage tank 640, a refrigerant pump 650, a throttling element 660, and a control unit 670.

[0160] The control unit 670 is configured to determine whether the refrigerant pump needs to adjust the working parameters according to the operating parameters of the refrigeration component included in the air conditioner and the operating state determination rule corresponding to the refrigeration component;

[0161] In the case where it is determined that the operating parameters of the refrigerant pump need to be adjusted, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting them accordingly;

[0162] Wherein, the refrigeration assembly includes: the refrigerant pump 650 and / or the evaporator 630;

[0163] The target operating parameters of the refrigerant pump include: rotation speed.

[0164] In some exemplary embodiments, the refrigerant pump 650 includes a fluorine pump.

[0165] In some exemplary embodiments, the first bypass check valve 680 and the second bypass check valve 690 are further included;

[0166] The compressor 610 is connected in parallel with the first bypass check valve 680 and is connected between the condenser 620 and the evaporator 630;

[0167] The refrigerant pump 650 is connected in parallel with the second bypass check valve 690 and is connected between the liquid storage tank 640 and the evaporator 630;

[0168] When the air conditioner is in full natural cooling mode, the first bypass check valve 680 is set to be connected, and the second bypass check valve 690 is set to be disconnected; or

[0169] When the air conditioner is in the compressor cooling mode, the first bypass check valve 680 is set to be disconnected, and the second bypass check valve 690 is set to be connected; or,

[0170] When the air conditioner is in a compressor-natural mixed cooling mode, the first bypass check valve 680 is set to be opened, and the second bypass check valve 690 is set to be opened.

[0171] In some exemplary embodiments, the throttling element 660 is disposed between the refrigerant pump 650 and the evaporator 630 .

[0172] In some exemplary embodiments, the throttling element 660 includes: a throttling valve or an electronic expansion valve.

[0173] An embodiment of the present disclosure further provides a storage medium, in which a computer program is stored, wherein the computer program is configured to execute the air conditioning control method as described in any embodiment of the present disclosure when running.

[0174] The air conditioning control scheme provided by the embodiments of the present disclosure, the refrigerant pump and / or evaporator included in the air conditioner and the corresponding operating state determination rules, determine the adjustment of the working parameters of the refrigerant pump included in the air conditioner, and can control the working parameters of the refrigerant pump used for natural cold source refrigeration by continuously paying attention to the actual operating conditions of the air conditioner, so that the relevant components of the air conditioning system that realize natural cold source refrigeration maintain the optimal coordination state and achieve the best energy efficiency. In some examples, after completing the adjustment of the corresponding working parameters during the actual operation process, the load rate and refrigerant pump speed relationship function based on which the target working parameters are determined is also dynamically corrected according to the adjustment results, so as to keep the determination result of the function consistent with the actual operating conditions of the air conditioner, and lay the foundation for continuously keeping the overall system operating in the optimal energy efficiency range.

[0175] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the 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 by several physical components in cooperation. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium 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 technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0176] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made under the conception of the present invention and the contents of the description and drawings of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air conditioning control method, applied to an air conditioning capable of cooling based on a natural cold source, characterized in that: include: According to the operating parameters of the refrigeration component included in the air conditioner and the operating state determination rule corresponding to the refrigeration component, determining whether the refrigerant pump included in the air conditioner needs to adjust the operating parameters; In the case where it is determined that the operating parameters of the refrigerant pump need to be adjusted, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting them accordingly; Wherein, the refrigeration component includes: a refrigerant pump and / or an evaporator; The target operating parameters of the refrigerant pump include: rotation speed.

2. The air conditioning control method according to claim 1, characterized in that: In the case where the refrigeration assembly includes a refrigerant pump, The operating parameters of the refrigerant pump include: refrigerant pump flow attenuation rate; The operating status judgment rules corresponding to the refrigerant pump include: When the refrigerant pump flow attenuation rate is greater than a set attenuation rate threshold, it is determined that the refrigerant pump needs to adjust the working parameters; or, In the case where the refrigeration assembly comprises an evaporator, The operating parameters of the evaporator include: evaporator outlet dryness; The operating state judgment rules corresponding to the evaporator include: When the dryness at the evaporator outlet is greater than a first dryness threshold or less than a second dryness threshold, it is determined that the refrigerant pump needs to adjust the working parameters; wherein the first dryness threshold is greater than the second dryness threshold.

3. The air conditioning control method according to claim 2, characterized in that: The refrigerant pump flow attenuation rate is calculated based on the current pump flow of the refrigerant pump and the reference pump flow; wherein the reference pump flow is a preset pump flow corresponding to the current load rate of the air conditioner; The evaporator outlet dryness is determined according to the evaporator outlet enthalpy value and the evaporator outlet temperature.

4. The air conditioning control method according to claim 2, characterized in that: In the case where the refrigeration component includes a refrigerant pump, determining the target operating parameters of the refrigerant pump according to the set adjustment rules and adjusting accordingly includes: The target speed of the refrigerant pump is determined according to the following formula: rpm' = rpm(Load) / (1-η); Wherein, rpm' is the target speed of the refrigerant pump, rpm(Load) is the relationship function between the current load rate and the refrigerant pump speed, Load is the current load rate of the air conditioner, and η is the refrigerant pump flow attenuation rate; The rotation speed of the refrigerant pump is adjusted accordingly according to the determined target rotation speed.

5. The air conditioning control method according to claim 4, characterized in that: The method further comprises: After the target operating parameters of the refrigerant pump are determined according to the set adjustment rules and adjusted accordingly, the load rate and refrigerant pump speed relationship function is corrected according to the following method: rpm'(Load)=rpm(Load) / (1-η); Among them, rpm'(Load) is the relationship function between the load rate and the refrigerant pump speed after correction, rpm(Load) is the relationship function between the load rate and the refrigerant pump speed before correction, η is the refrigerant pump flow attenuation rate, and Load is the current load rate of the air conditioner.

6. The air conditioning control method according to claim 2, characterized in that: In the case where the refrigeration component includes an evaporator, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting accordingly includes: When the evaporator outlet dryness is greater than a first dryness threshold, determining that the target speed is greater than a current speed of the refrigerant pump; When the evaporator outlet dryness is less than a second dryness threshold, determining that the target speed is less than a current speed of the refrigerant pump; The rotation speed of the refrigerant pump is adjusted accordingly according to the determined target rotation speed.

7. The air conditioning control method according to any one of claims 1 to 6, characterized in that: Before determining whether the refrigerant pump included in the air conditioner needs to adjust the working parameters, the method further includes: Determining whether the air conditioner is in a stable operating state according to a change in a first system operating parameter of the air conditioner within a preset time; When it is determined that the air conditioner is in a stable operating state, the step of determining whether the refrigerant pump included in the air conditioner needs to adjust the working parameters is performed; The first system operating parameters of the air conditioner include one or more of the following: Indoor temperature, outdoor temperature, percentage of speed of cooling medium conveying equipment, power of cooling medium conveying equipment, inlet temperature of cooling medium conveying equipment, outlet temperature of cooling medium conveying equipment, speed of refrigerant pump and power of refrigerant pump.

8. An electronic device, characterized in that: include, one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the air conditioning control method as described in any one of claims 1-7.

9. An air conditioner capable of refrigeration based on a natural cold source, comprising: A compressor, a condenser, an evaporator, a liquid storage tank, a refrigerant pump, a throttling element, and a control unit, characterized in that: The control unit is configured to determine whether the refrigerant pump needs to adjust the working parameters according to the operating parameters of the refrigeration component included in the air conditioner and the operating state determination rule corresponding to the refrigeration component; In the case where it is determined that the operating parameters of the refrigerant pump need to be adjusted, determining the target operating parameters of the refrigerant pump according to a set adjustment rule and adjusting them accordingly; Wherein, the refrigeration component comprises: the refrigerant pump and / or the evaporator; The target operating parameters of the refrigerant pump include: rotation speed.

10. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the air conditioning control method according to any one of claims 1 to 7 when running.

Images