Air source heat pump fan speed regulation control method and device and computer equipment

Abstract

The invention relates to an air source heat pump fan speed regulation control method and device and computer equipment, and can be applied to the technical field of air source heat pumps. The method comprises the steps that the environment temperature is divided into a plurality of temperature intervals, and the current environment temperature of the air source heat pump is obtained; determining a temperature interval corresponding to the current environment temperature; based on the temperature interval corresponding to the current environment temperature, the preset maximum rotating speed, corresponding to the temperature interval, of the draught fan is obtained, and the preset maximum running frequency, corresponding to the temperature interval, of the compressor is obtained; according to the actual operation frequency of the compressor and the preset maximum operation frequency, the frequency proportion coefficient of the compressor is determined; and according to the preset maximum rotating speed and the compressor frequency proportion coefficient, the target rotating speed of the fan is determined. By adopting the method, the operation efficiency of the air source heat pump can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of air source heat pumps, and in particular to a control method, device and computer equipment for speed regulation of a fan of an air source heat pump. Background Art

[0002] With the development of air source heat pump technology, air source heat pumps are increasingly used in household heating and hot water supply. Among them, the coordinated control of fans and compressors is an important aspect of improving system operating efficiency.

[0003] In traditional technology, when an air source heat pump is running, the fan is adjusted based on the ambient temperature or the compressor frequency is synchronously increased or decreased according to a preset adjustment value. There is no corresponding match between the fan speed and the compressor frequency, resulting in low operating efficiency of the air source heat pump. Summary of the Invention

[0004] Based on this, it is necessary to provide a control method, device and computer equipment for air source heat pump fan speed regulation to address the above technical problems.

[0005] In a first aspect, the present application provides a method for controlling the speed of a fan in an air source heat pump, wherein the air source heat pump comprises at least a fan and a compressor. The method comprises:

[0006] Divide the ambient temperature into multiple temperature ranges.

[0007] Obtaining the current ambient temperature of the air source heat pump; determining a temperature range corresponding to the current ambient temperature;

[0008] Based on the temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range is obtained, and a preset maximum operating frequency of the compressor corresponding to the temperature range is obtained; the preset maximum operating frequency represents the maximum value of the operating frequency of the compressor that meets the heating amount within the temperature range corresponding to the current ambient temperature; the preset maximum speed represents the wind speed that matches the preset maximum operating frequency;

[0009] Determining a compressor frequency ratio coefficient according to the actual operating frequency of the compressor and the preset maximum operating frequency;

[0010] The target speed of the fan is determined according to the preset maximum speed and the compressor frequency ratio.

[0011] The above-mentioned air source heat pump fan speed control method divides the ambient temperature into multiple temperature intervals and, based on the temperature interval corresponding to the current ambient temperature, obtains a preset maximum speed of the fan corresponding to the temperature interval and a preset maximum operating frequency of the compressor corresponding to the temperature interval, wherein the preset maximum operating frequency represents the maximum value of the operating frequency at which the compressor is increased to meet the heating capacity in the temperature interval corresponding to the current ambient temperature; the preset maximum speed represents the wind speed that matches the preset maximum operating frequency, thereby facilitating differentiated control for different ambient temperature conditions and avoiding efficiency loss caused by the air source heat pump using fixed operating parameters in different ambient temperature intervals; by determining the compressor frequency ratio coefficient based on the actual operating frequency of the compressor and the preset maximum operating frequency, it is conducive to establishing a dynamic correlation between the fan speed and the compressor operating state, so that the fan speed can respond to changes in the operation of the compressor; by determining the target speed of the fan based on the preset maximum speed and the compressor frequency ratio coefficient, it is conducive to achieving coordinated matching of the fan speed and the compressor operating frequency in the current temperature interval, avoiding ineffective power consumption caused by excessively high fan speed or insufficient heat exchange caused by excessively low speed, thereby facilitating improving the operating efficiency of the air source heat pump.

[0012] In one embodiment, after determining the target speed of the fan according to the preset maximum speed and the compressor frequency ratio, the method further includes:

[0013] Obtaining an ambient humidity coefficient from a preset temperature interval parameter according to the temperature interval corresponding to the current ambient temperature;

[0014] determining an evaporation temperature difference correction coefficient according to a difference between the evaporation temperature and the current ambient temperature;

[0015] The target rotational speed is corrected according to the ambient humidity coefficient and the evaporation temperature difference correction coefficient to obtain a corrected rotational speed of the fan.

[0016] In one embodiment, the air source heat pump further includes an enthalpy increase circuit, which, after determining the target speed of the fan according to the preset maximum speed and the compressor frequency ratio, further includes:

[0017] According to the temperature range corresponding to the current ambient temperature, the ambient humidity coefficient and the enthalpy increase performance coefficient are obtained from the preset temperature range parameters;

[0018] determining an evaporation temperature difference correction coefficient according to a difference between the evaporation temperature and the current ambient temperature;

[0019] The target speed is corrected according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient, and the enthalpy increase performance coefficient to obtain a corrected speed of the fan.

[0020] In one embodiment, after the target speed is corrected according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient, and the enthalpy increase performance coefficient to obtain the corrected speed of the fan, the method further includes:

[0021] When the corrected speed is greater than or equal to the maximum speed of the fan, controlling the fan to operate at the maximum speed;

[0022] When the corrected rotational speed is less than or equal to the minimum rotational speed of the fan, the fan is controlled to operate at the minimum rotational speed.

[0023] In one embodiment, determining the compressor frequency ratio coefficient according to the actual operating frequency of the compressor and the preset maximum operating frequency includes:

[0024] The compressor frequency ratio coefficient is determined according to the ratio of the actual operating frequency to the preset maximum operating frequency and a preset compensation coefficient.

[0025] In one embodiment, after determining the target speed of the fan according to the preset maximum speed and the compressor frequency ratio, the method further includes:

[0026] The target frequency of the compressor is periodically adjusted according to the actual water temperature and the target water temperature of the air source heat pump, and the target speed is updated based on the adjusted target frequency.

[0027] In one embodiment, the periodically adjusting the target frequency of the compressor according to the actual water temperature and the target water temperature of the air source heat pump includes:

[0028] determining a temperature difference between the actual water temperature and the target water temperature, and determining a temperature change rate of the actual water temperature;

[0029] The target frequency is adjusted according to the temperature difference and the temperature change rate.

[0030] In one embodiment, adjusting the target frequency according to the temperature difference and the temperature change rate includes:

[0031] Determining a difference interval corresponding to the temperature difference;

[0032] Determining a temperature change rate threshold corresponding to the temperature change rate according to the difference interval;

[0033] When the temperature change rate is less than the temperature change rate threshold, increasing the target frequency;

[0034] When the temperature change rate is greater than the temperature change rate threshold, the target frequency is adjusted downward.

[0035] In a second aspect, the present application further provides a control device for speed regulation of a fan of an air source heat pump, wherein the air source heat pump comprises at least a fan and a compressor. The device comprises:

[0036] The temperature division module is used to divide the ambient temperature into multiple temperature intervals.

[0037] A temperature acquisition module is used to obtain the current ambient temperature of the air source heat pump; and determine the temperature range corresponding to the current ambient temperature;

[0038] a speed acquisition module, configured to acquire, based on a temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range, and a preset maximum operating frequency of the compressor corresponding to the temperature range; the preset maximum operating frequency representing the maximum value of the operating frequency of the compressor that is increased to meet the heating amount within the temperature range corresponding to the current ambient temperature; and the preset maximum speed representing the wind speed that matches the preset maximum operating frequency;

[0039] A coefficient determination module, configured to determine a compressor frequency ratio coefficient based on the actual operating frequency of the compressor and the preset maximum operating frequency;

[0040] The speed determination module is used to determine the target speed of the fan according to the preset maximum speed and the compressor frequency ratio.

[0041] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are performed:

[0042] Divide the ambient temperature into multiple temperature intervals.

[0043] Obtaining the current ambient temperature of the air source heat pump; determining a temperature range corresponding to the current ambient temperature;

[0044] Based on the temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range is obtained, and a preset maximum operating frequency of the compressor corresponding to the temperature range is obtained; the preset maximum operating frequency represents the maximum value of the operating frequency of the compressor that meets the heating amount within the temperature range corresponding to the current ambient temperature; the preset maximum speed represents the wind speed that matches the preset maximum operating frequency;

[0045] Determining a compressor frequency ratio coefficient according to the actual operating frequency of the compressor and the preset maximum operating frequency;

[0046] The target speed of the fan is determined according to the preset maximum speed and the compressor frequency ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 Schematic diagram of a flow chart of a method for controlling speed regulation of an air source heat pump fan in one embodiment;

[0049] Figure 2 A flow chart of a method for controlling the speed of an air source heat pump fan in another embodiment;

[0050] Figure 3 This is a structural block diagram of a control device for speed regulation of an air source heat pump fan in one embodiment;

[0051] Figure 4 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0053] 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, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0054] In an exemplary embodiment, Figure 1As shown, a control method for speed regulation of an air source heat pump fan is provided. This embodiment uses the method applied to a terminal as an example for illustration; it is understandable that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through interaction between the terminal and the server. The terminal can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, etc.; the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. In this embodiment, the method includes the following steps:

[0055] Step S101, dividing the ambient temperature into multiple temperature intervals;

[0056] Step S102, obtaining the current ambient temperature of the air source heat pump; determining the temperature range corresponding to the current ambient temperature;

[0057] Step S103: Based on the temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range is obtained, as is a preset maximum operating frequency of the compressor corresponding to the temperature range. The preset maximum operating frequency represents the maximum value of the operating frequency at which the compressor can be increased to meet the heating requirement within the temperature range corresponding to the current ambient temperature. The preset maximum speed represents the wind speed that matches the preset maximum operating frequency.

[0058] Step S104, determining the compressor frequency ratio coefficient according to the actual operating frequency of the compressor and the preset maximum operating frequency;

[0059] Step S105 : determining a target speed of the fan according to a preset maximum speed and a compressor frequency ratio coefficient.

[0060] Among them, the air source heat pump includes at least a fan and a compressor, and the air source heat pump can be a heat pump device that uses ambient air as a heat source.

[0061] The current ambient temperature may be the actual temperature of the operating environment of the air source heat pump.

[0062] Among them, the preset maximum speed represents the wind speed that matches the preset maximum operating frequency, which can be understood as: when the compressor frequency is clear, the fan speed that matches the current compressor frequency can be obtained based on the matching curve of the compressor frequency and the fan speed.

[0063] The actual operating frequency may be the current actual operating frequency of the compressor.

[0064] The compressor frequency ratio coefficient may be a coefficient used to adjust the fan speed, reflecting the relationship between the actual operating frequency of the compressor and the preset maximum operating frequency.

[0065] The target speed may be the final operating speed of the fan determined after coefficient correction.

[0066] Optionally, the terminal obtains the current ambient temperature of the air source heat pump's current operating environment, and based on the temperature range corresponding to the current ambient temperature, obtains the preset maximum speed of the fan corresponding to the temperature range, and obtains the preset maximum operating frequency of the compressor corresponding to the temperature range. Each temperature range corresponds to a different maximum fan speed value and maximum compressor frequency value. The terminal monitors the actual operating frequency of the compressor in real time through a sensor, and calculates the actual operating frequency of the compressor with the preset maximum operating frequency of the compressor corresponding to the current ambient temperature range to determine the compressor frequency ratio coefficient S. The calculation formula for the compressor frequency ratio coefficient S is S = actual operating frequency / interval preset maximum operating frequency × 1.2, where 1.2 is the compensation coefficient constant. The terminal performs calculations based on the obtained preset maximum fan speed and the calculated compressor frequency ratio coefficient to determine the target speed of the air source heat pump fan, ensuring that the fan speed matches the compressor operating frequency to achieve efficient operation of the air source heat pump.

[0067] In the above-mentioned control method for air source heat pump fan speed regulation, based on the temperature range corresponding to the current ambient temperature, the preset maximum speed of the fan corresponding to the temperature range is obtained, and the preset maximum operating frequency of the compressor corresponding to the temperature range is obtained, wherein the preset maximum operating frequency represents the maximum value of the operating frequency at which the compressor is increased to meet the heating capacity under the temperature range corresponding to the current ambient temperature; the preset maximum speed represents the wind speed that matches the preset maximum operating frequency; the compressor frequency ratio coefficient is determined based on the actual operating frequency of the compressor and the preset maximum operating frequency; and the fan target speed is determined based on the preset maximum speed and the compressor frequency ratio coefficient. This solution is conducive to achieving differentiated control for different ambient temperature conditions, avoiding efficiency loss caused by the use of fixed operating parameters in different ambient temperature ranges for air-source heat pumps; by determining the compressor frequency ratio coefficient based on the actual operating frequency of the compressor and the preset maximum operating frequency, it is conducive to establishing a dynamic correlation between the fan speed and the compressor operating state, so that the fan speed can respond to changes in the operation of the compressor; by determining the fan's target speed based on the preset maximum speed and the compressor frequency ratio coefficient, it is conducive to achieving coordinated matching of the fan speed and the compressor operating frequency, avoiding ineffective power consumption caused by excessively high fan speed or insufficient heat exchange caused by too low speed, thereby helping to improve the operating efficiency of the air source heat pump.

[0068] In an exemplary embodiment, after determining the target speed of the fan based on the preset maximum speed and the compressor frequency ratio coefficient, the following contents are also included: obtaining the ambient humidity coefficient from the preset temperature interval parameters according to the temperature interval corresponding to the current ambient temperature; determining the evaporation temperature difference correction coefficient according to the difference between the evaporation temperature and the current ambient temperature; and correcting the target speed according to the ambient humidity coefficient and the evaporation temperature difference correction coefficient to obtain the corrected speed of the fan.

[0069] Among them, the temperature interval can be different temperature segments divided according to the ambient temperature range. For example, the temperature interval can be nine different ambient temperature intervals, namely, greater than 20°C, 20 to 10°C, 10 to 0°C, 0 to -5°C, -5 to -10°C, -10 to -15°C, -15 to -20°C, -20 to -25°C, and less than or equal to -25°C.

[0070] Among them, the preset temperature range parameters can be a parameter table of various control coefficients corresponding to different temperature ranges. For example, the preset temperature range parameters can be a parameter table including parameters such as the maximum fan speed Fe, the maximum compressor frequency Fr, the ambient humidity coefficient H, and the enthalpy increase opening performance coefficient Z.

[0071] The ambient humidity coefficient may be a correction coefficient used to adjust the fan speed to cope with humidity changes at different ambient temperatures.

[0072] The evaporation temperature may be the evaporation temperature of the refrigerant in the evaporator.

[0073] The evaporation temperature difference correction coefficient may be a fan speed adjustment coefficient determined according to the difference between the evaporation temperature and the ambient temperature.

[0074] The corrected speed may be the final operating speed of the fan after correction by the ambient humidity coefficient and the evaporation temperature difference correction coefficient.

[0075] Optionally, after determining the target speed of the fan, the terminal searches and obtains the corresponding ambient humidity coefficient H from a preset temperature range parameter table based on the temperature range of the current ambient temperature. This ambient humidity coefficient H is used to adjust the fan speed to account for the effects of humidity changes under different ambient temperatures. The terminal simultaneously detects the evaporation temperature of the refrigerant in the evaporator, calculates the temperature difference between the evaporation temperature and the current ambient temperature, and determines the corresponding evaporation temperature difference correction coefficient θ from a preset correction coefficient table based on this temperature difference. The terminal then combines the obtained ambient humidity coefficient H and evaporation temperature difference correction coefficient θ with the target speed of the fan, adjusts the target speed of the fan, and obtains the corrected speed of the fan, ensuring that the fan speed can adapt to operating requirements under different environmental conditions.

[0076] The technical solution provided in this embodiment obtains the ambient humidity coefficient from the preset temperature interval parameters according to the temperature interval corresponding to the ambient temperature, which is conducive to differentiated adjustment of the humidity characteristics of different temperature intervals; determines the evaporation temperature difference correction coefficient according to the difference between the evaporation temperature and the ambient temperature, which is conducive to real-time response to dynamic changes in the evaporation working conditions; and obtains the corrected speed of the fan by correcting the target speed according to the ambient humidity coefficient and the evaporation temperature difference correction coefficient, which is conducive to accurate correction of the fan speed, thereby improving the operating stability and control accuracy of the air source heat pump.

[0077] In an exemplary embodiment, the air source heat pump also includes an enthalpy increase circuit. After determining the target speed of the fan based on the preset maximum speed and the compressor frequency ratio coefficient, it also includes the following contents: according to the temperature range corresponding to the ambient temperature, the ambient humidity coefficient and the enthalpy increase performance coefficient are obtained from the preset temperature range parameters; according to the difference between the evaporating temperature and the ambient temperature, the evaporation temperature difference correction coefficient is determined; according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient and the enthalpy increase performance coefficient, the target speed is corrected to obtain the corrected speed of the fan.

[0078] Among them, the enthalpy increase circuit can be an air supply circuit in the air source heat pump for improving the heating performance. For example, the enthalpy increase circuit can be an air injection enthalpy increase function circuit that is turned on at low ambient temperature to increase the heating capacity.

[0079] The enthalpy increase performance coefficient may be a regulation coefficient reflecting the proportion of heating capacity of the enthalpy increase circuit at different ambient temperatures.

[0080] Optionally, after determining the target speed of the fan, the terminal obtains the corresponding ambient humidity coefficient H and enthalpy increase performance coefficient Z from the preset temperature range parameter table according to the temperature range of the current ambient temperature, where the ambient humidity coefficient H is used to adjust the fan speed to cope with the influence of humidity changes under different ambient temperatures; the terminal obtains the enthalpy increase performance coefficient Z to reflect the proportion of heating capacity of the enthalpy increase circuit; detects the evaporation temperature of the refrigerant in the evaporator, calculates the temperature difference between the evaporation temperature and the current ambient temperature, and determines the corresponding evaporation temperature difference correction coefficient θ from the preset correction coefficient table according to the temperature difference, and comprehensively calculates the obtained ambient humidity coefficient H, evaporation temperature difference correction coefficient θ and enthalpy increase performance coefficient Z with the target speed of the fan, corrects the target speed of the fan, and obtains a corrected speed after multiple corrections.

[0081] The technical solution provided in this embodiment obtains the ambient humidity coefficient and the enthalpy increase performance coefficient from the preset temperature range parameters according to the temperature range corresponding to the ambient temperature, which is conducive to simultaneously considering the dual adjustment requirements of the influence of humidity changes and the proportion of heating capacity of the enthalpy increase circuit, and adapting to the operating characteristics of the air source heat pump equipped with an enthalpy increase circuit; by determining the evaporation temperature difference correction coefficient based on the difference between the evaporation temperature and the ambient temperature, it is conducive to real-time response to the dynamic changes of the evaporation working condition; by correcting the target speed according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient and the enthalpy increase performance coefficient to obtain the corrected speed, it is conducive to achieving accurate correction of the fan speed.

[0082] In an exemplary embodiment, after the target speed is corrected according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient and the enthalpy increase performance coefficient to obtain the corrected speed of the fan, it also includes the following content: when the corrected speed is greater than or equal to the maximum speed of the fan, the fan is controlled to operate at the maximum speed; when the corrected speed is less than or equal to the minimum speed of the fan, the fan is controlled to operate at the minimum speed.

[0083] The maximum speed of the fan refers to the maximum speed limit allowed by the fan in the current temperature range.

[0084] The minimum speed of the fan refers to the lowest speed limit allowed by the fan in the current temperature range.

[0085] Optionally, after obtaining the corrected speed of the fan, the terminal compares and judges the corrected speed of the fan with the preset fan speed operating range under the current temperature range, for example: the preset fan speed operating range is 200 to 900r / min, wherein the maximum speed of the fan is 900r / min and the minimum speed of the fan is 200r / min; when the terminal judges that the corrected speed of the fan is greater than or equal to the maximum speed of the fan 900r / min, in order to avoid equipment damage or excessive noise caused by overspeeding of the fan, the terminal controls the fan to run at the maximum speed of the fan 900r / min, ensuring that the fan speed does not exceed the upper limit range allowed by the design; when the terminal judges that the corrected speed of the fan is less than or equal to the minimum speed of the fan 200r / min, in order to ensure that the fan can maintain basic heat exchange effect and air flow, the terminal controls the fan to run at the minimum speed of the fan 200r / min, avoiding insufficient heat exchange caused by too low fan speed.

[0086] The technical solution provided in this embodiment helps avoid equipment damage and excessive noise caused by overspeeding of the fan by controlling the fan to operate at the maximum speed when the corrected speed is greater than or equal to the maximum speed of the fan, and ensures that the fan operates within a safe range; and helps ensure that the fan maintains basic heat exchange effect and air flow capacity by controlling the fan to operate at the minimum speed when the corrected speed is less than or equal to the minimum speed of the fan, and avoids insufficient heat exchange caused by too low a fan speed.

[0087] In an exemplary embodiment, the compressor frequency ratio coefficient is determined based on the actual operating frequency of the compressor and the preset maximum operating frequency, specifically including the following: the compressor frequency ratio coefficient is determined based on the ratio of the actual operating frequency to the preset maximum operating frequency, and a preset compensation coefficient.

[0088] The preset compensation coefficient may be a fixed numerical parameter used to adjust the calculation accuracy of the compressor frequency ratio coefficient. For example, the preset compensation coefficient may be a compensation coefficient constant of 1.2.

[0089] Optionally, in the process of determining the compressor frequency ratio coefficient, the terminal first detects the actual operating frequency of the compressor, and then obtains the preset maximum operating frequency value corresponding to the ambient temperature range of the compressor; divides the actual operating frequency by the preset maximum operating frequency to obtain the frequency ratio, and at the same time calls the preset compensation coefficient 1.2 for correction calculation, and calculates the compressor frequency ratio coefficient S through the formula S=actual operating frequency / preset maximum operating frequency of the interval×1.2.

[0090] The technical solution provided in this embodiment is beneficial to improving the calculation accuracy of the compressor frequency ratio by correcting and adjusting the frequency ratio in combination with a preset compensation coefficient, thereby improving the control accuracy of the air source heat pump.

[0091] In an exemplary embodiment, after determining the target speed of the fan based on the preset maximum speed and the compressor frequency ratio coefficient, it also includes the following content: periodically adjusting the target frequency of the compressor according to the actual water temperature and target water temperature of the air source heat pump, and updating the target speed based on the adjusted target frequency.

[0092] The actual water temperature of the air source heat pump may be the water inlet temperature value currently detected by the air source heat pump.

[0093] The target water temperature may be a desired water temperature value set by the air source heat pump, for example, the target water temperature may be a set water temperature of 45°C.

[0094] The periodic adjustment may be an adjustment operation performed at fixed time intervals, for example, the periodic adjustment may be an adjustment performed at a compressor adjustment cycle of 60 seconds.

[0095] The target frequency of the compressor may be an expected operating frequency of the compressor determined according to the water temperature difference and the water temperature change rate.

[0096] Optionally, after determining the target speed of the fan, the terminal enters the periodic adjustment control stage of the compressor, which operates according to a 60s compressor adjustment cycle; the terminal detects the actual water temperature of the air source heat pump, i.e., the actual inlet water temperature, in real time, and obtains the preset target water temperature, i.e., the set water temperature. According to the actual water temperature and target water temperature of the air source heat pump, the target frequency of the compressor is periodically adjusted, and the target speed is updated based on the adjusted target frequency.

[0097] The technical solution provided in this embodiment is conducive to dynamic adjustment of the compressor frequency according to the actual operating status by periodically adjusting the target frequency of the compressor according to the actual water temperature and target water temperature of the air source heat pump, and is conducive to ensuring that the fan speed and the actual operating frequency of the compressor are coordinated and matched, thereby avoiding the reduction in operating efficiency caused by the mismatch between the fan speed and the compressor frequency.

[0098] In an exemplary embodiment, the target frequency of the compressor is periodically adjusted according to the actual water temperature and the target water temperature of the air source heat pump, specifically including the following: determining the temperature difference between the actual water temperature and the target water temperature, and determining the temperature change rate of the actual water temperature; adjusting the target frequency according to the temperature difference and the temperature change rate.

[0099] The temperature difference may be the temperature difference between the actual water temperature of the air source heat pump and the target water temperature.

[0100] The temperature change rate may be the rate of change of the actual water temperature of the air source heat pump within a certain time period.

[0101] Optionally, during the periodic adjustment of the target frequency of the compressor, the terminal detects the actual water temperature of the air source heat pump, i.e., the actual water inlet temperature, and the preset target water temperature, i.e., the set water temperature, and calculates the temperature difference between the two. T; monitor the change of actual water inlet temperature between two consecutive compressor adjustment cycles and calculate the temperature change rate of actual water temperature Ts, where the compressor adjustment cycle is 60s; obtain the temperature difference T and temperature change rate After Ts, according to the temperature difference T and temperature change rate The specific value range of Ts determines the increase or decrease of the compressor frequency, thereby adjusting the target frequency of the compressor.

[0102] The technical solution provided in this embodiment, by adjusting the target frequency according to the temperature difference and the temperature change rate, is conducive to realizing dual-parameter coordinated control based on temperature demand and change trend, avoiding the problem of improper frequency adjustment caused by single parameter control, and thus helping to improve the accuracy of compressor frequency adjustment.

[0103] In an exemplary embodiment, the target frequency is adjusted according to the temperature difference and the temperature change rate, specifically including the following contents: determining the difference interval corresponding to the temperature difference; determining the temperature change rate threshold corresponding to the temperature change rate according to the difference interval; when the temperature change rate is less than the temperature change rate threshold, increasing the target frequency; when the temperature change rate is greater than the temperature change rate threshold, decreasing the target frequency.

[0104] Among them, the difference interval can be based on the temperature difference The numerical range of T is divided into different intervals.

[0105] The temperature change rate threshold can be the inlet water temperature change rate determined according to the difference interval. The judgment limit value of Ts.

[0106] The increasing regulation may be performing a frequency increasing operation on the target frequency of the compressor.

[0107] The down-regulation may be a frequency reduction operation on the target frequency of the compressor.

[0108] Optionally, the terminal T and temperature change rate In the process of adjusting the target frequency of the compressor, the temperature difference is first determined. The difference interval corresponding to T; based on the determined difference interval, further determine the temperature change rate Ts corresponds to the temperature change rate threshold; When Ts is less than the determined temperature change rate threshold, the target frequency of the compressor is increased; when the temperature change rate is When Ts is greater than the determined temperature change rate threshold, the target frequency of the compressor is adjusted downward.

[0109] The technical solution provided in this embodiment is conducive to realizing intelligent frequency adjustment based on temperature change trend, thereby improving the accuracy of compressor frequency control, by increasing the target frequency when the temperature change rate is less than the temperature change rate threshold, and decreasing the target frequency when the temperature change rate is greater than the temperature change rate threshold.

[0110] In an exemplary embodiment, the preset maximum speed of the fan and the preset maximum operating frequency of the compressor are obtained according to the ambient temperature, specifically including the following contents: determining the temperature range corresponding to the ambient temperature; obtaining the preset maximum speed of the fan corresponding to the temperature range from the preset temperature range parameters, and obtaining the preset maximum operating frequency of the compressor corresponding to the temperature range.

[0111] Optionally, in the process of obtaining the preset maximum speed of the fan corresponding to the temperature range and the preset maximum operating frequency of the compressor corresponding to the temperature range based on the temperature range corresponding to the current ambient temperature, the terminal first determines the temperature range corresponding to the current ambient temperature by detecting the ambient temperature value when the air source heat pump is running; compares and matches the detected current ambient temperature with the preset ambient temperature range T1, and obtains the preset maximum speed Fe of the fan corresponding to the temperature range from the preset temperature range parameter table, and at the same time obtains the preset maximum operating frequency Fr of the compressor corresponding to the temperature range.

[0112] The technical solution provided in this embodiment is conducive to realizing differentiated parameter configuration based on ambient temperature conditions by obtaining the preset maximum speed of the fan corresponding to the temperature range and the preset maximum operating frequency of the compressor corresponding to the temperature range from the preset temperature range parameters, thereby avoiding the efficiency loss caused by the air source heat pump using fixed operating parameters in different ambient temperature ranges, thereby helping to improve the operating adaptability and control accuracy of the air source heat pump under different ambient temperature conditions.

[0113] The following is an application example to illustrate the control method for air source heat pump fan speed regulation provided by this application. This application example uses the method applied to a terminal as an example.

[0114] When operating a low-temperature air-source heat pump for heating at low ambient temperatures, the fan speed always runs at maximum speed, or the compressor operating frequency and fan speed are linked only to the ambient temperature zone. When the current ambient temperature is within a certain temperature zone, the compressor operates at a fixed operating frequency corresponding to that temperature zone, and the fan runs at a fixed speed corresponding to that temperature zone. This results in low unit efficiency, high noise, and frost formation at certain ambient temperatures. Running the compressor directly at a high frequency, or even at the maximum frequency within the range, can easily lead to frequent starts and stops of the unit due to frequent overheating, shortening the unit's service life.

[0115] The solution for this application example includes:

[0116] Use the ambient temperature range to divide the maximum fan speed and the maximum compressor frequency into initial partitions, represented by Fe and Fr, as shown in Table 1;

[0117] Use the compressor operating frequency ratio as the fan speed adjustment coefficient S. The compressor frequency ratio coefficient S = actual operating frequency / interval preset maximum operating frequency × 1.2, where 1.2 is the compensation coefficient constant. For the interval preset maximum operating frequency, see Table 1.

[0118] Ambient humidity coefficient H: Because different ambient temperatures correspond to different humidities, the water in the air approaches liquid saturation when it is close to 0°C. Therefore, at this temperature, the air is more likely to absorb heat and form frost when passing through the evaporator. Therefore, in order to reduce the speed of frost on the fins, the ambient humidity coefficient is introduced. The fan speed is increased in the ambient temperature range with high humidity, which reduces the temperature difference between the air entering and leaving the evaporator, reducing the speed of condensation and frost formation of water molecules in the air. The coefficient is shown in Table 1.

[0119] According to the performance parameter Z of the compressor: calculate the proportion of the heating capacity of the enthalpy increase circuit in each ambient temperature range. The heating capacity of the unit is composed of heat absorption on the evaporation side and air supply in the enthalpy increase circuit, as well as heat dissipation of the compressor motor. The lower the ambient temperature, the greater the proportion of heat from the air supply in the enthalpy increase circuit. If the total heating capacity remains unchanged, the evaporation heat absorption on the evaporation side will be smaller. Therefore, the enthalpy increase opening performance coefficient Z is increased as the proportion of heat absorption on the evaporation side under different ambient temperatures to adjust the fan speed. Calculate the curve of the actual heat exchange demand on the evaporation side under different ambient temperatures. Calculate the maximum fan speed requirement for each ambient temperature range based on the heat exchange demand at the preset maximum operating frequency in the ambient temperature range. The coefficient of the enthalpy increase function of the unit is uniformly calculated as 1. See Table 1 for the coefficients;

[0120] The difference between the evaporation temperature and the ambient temperature is used as the adjustment coefficient θ of the fan speed, see Table 2;

[0121] Real-time fan speed Fs=Fe×S×H×Z×θ.

[0122] Table 1

[0123]

[0124] Table 2

[0125]

[0126] The compressor operating frequency is adjusted according to capacity requirements, and the specific operating sequence includes:

[0127] 1) Compressor starting frequency: The compressor starting frequency is 20Hz, and the maintenance time is 60s; the minimum operating frequency of the compressor is 30Hz;

[0128] 2) First protection platform: compressor operating frequency 35Hz, maintenance time 180s;

[0129] If the system initial target frequency is greater than the first protection platform, the compressor will run to the first protection platform 35Hz, maintain operation for 180s, and then run to the initial target frequency.

[0130] 3) Second protection platform: compressor operating frequency 55Hz, maintenance time 180s;

[0131] If the system initial target frequency is greater than the second protection platform, the compressor will run to the second protection platform of 55Hz and maintain operation for 180s, and then run to the initial target frequency.

[0132] 4) Phase 1: Calculation of initial target frequency:

[0133] Frc=(K×f(Ts)×f(Tw)+A)×E;

[0134] K=30;A=20;E=1;

[0135] A is the compensation constant; f(Ts): water temperature correction coefficient; f(Tw): ambient temperature correction coefficient; parameters refer to Table 3;

[0136] Table 3

[0137]

[0138] 5) Phase 2: After the initial target frequency is maintained for 3 minutes, the water temperature difference T and water temperature change rate Ts is adjusted, and the adjustment frequency is shown in Table 4;

[0139] T: Indicates the difference between the actual water inlet temperature and the set water temperature;

[0140] Ts: represents the rate of change of the inlet water temperature, the value is the inlet water temperature value T detected during the current compressor adjustment cycle s Compared with the water inlet temperature value T detected in the previous compressor adjustment cycle s-1 The difference, use Ts=T s -T s-1 Indicates that the compressor adjustment cycle is 60s.

[0141] Table 4

[0142]

[0143] From the parameters in Table 4, we can see that if the difference between the actual water inlet temperature and the set water temperature is T>3℃, and the rate of change of inlet water temperature When Ts≤0, it means that the heat generated by the current compressor operating frequency is lower than the heat dissipation of the user end. At this time, the compressor needs to increase the frequency by 5Hz / cycle. If the difference between the actual water inlet temperature and the set water temperature is T≤0℃, and the change rate of inlet water temperature is 0.5℃≤ When Ts≤1℃, it means that the heat generated by the current compressor operating frequency is higher than the heat dissipation at the user end. At this time, the compressor needs to reduce the frequency by 2Hz / cycle.

[0144] When starting up, start at the maximum speed in the range, maintain it for 5 minutes, and then adjust the speed after correcting the parameters.

[0145] Set the fan speed operating range to: 200-900r / min. After the fan interval maximum speed multiplied by all coefficients, if Fs≥the fan interval maximum speed, it will run at the fan interval maximum speed; if Fs≤the fan interval minimum speed, it will run at the fan interval minimum speed.

[0146] The compressor operating range is: 30-95Hz. If the calculated compressor operating frequency value is greater than the preset maximum operating frequency of the interval, it is equal to the preset maximum operating frequency of the interval. If the calculated compressor operating frequency value is less than the minimum operating frequency of the compressor, it is equal to the minimum operating frequency of the compressor.

[0147] Process reference for this application example Figure 2 , including: starting up, if the starting conditions are not met, then standby; if the starting return difference is 4℃, the symbol starting conditions are met, then the fan starts and the compressor starts; the compressor runs on the first platform, and the compressor target frequency is calculated according to the initial water temperature; if the target frequency ≤ the compressor second platform operating frequency, the compressor runs on the second platform; if the target frequency > the compressor second platform operating frequency, the compressor runs at the target frequency; the compressor automatically adjusts the frequency to run, and controls the fan to automatically adjust the speed according to the maximum operating speed of the fan range, the compressor frequency coefficient, the enthalpy increase coefficient, the ambient temperature coefficient, the humidity coefficient, and the difference between the evaporating temperature and the ambient temperature.

[0148] When the air source heat pump also includes an enthalpy increase circuit, that is, the air source heat pump system is an air source enthalpy increase heat pump system well known to those skilled in the art. Since the air source enthalpy increase heat pump system is a conventional technical means in this field, this application will not go into details.

[0149] For example: The current ambient temperature is -12°C, the target water temperature is 45°C, and the actual water temperature is 35°C. To start the unit:

[0150] 1) The current fan speed is: 800r / min, maintained for 5 minutes;

[0151] 2) After the compressor starts, it runs at the first platform of 30Hz, with an adjustment cycle of 180s;

[0152] 3) Calculation: The operating frequency in the first stage is: Frc = (K × f (Ts) × f (Tw) + A) × E = (30 × 1 × 1.1 + 20) × 1 = 53 Hz. After the first platform operation is completed, the unit frequency is increased to 53 Hz, and the adjustment cycle is 60 seconds.

[0153] 4) The current fan speed is: Fs = Fe × 1.2S × H × Z × θ = 800 × 1.2 × (53 ÷ 95) × 0.95 × 0.8 = 407 r / min;

[0154] 5) The compressor frequency increases to the second operating platform of 55Hz. After an adjustment period of 180s, it begins to enter the second stage of compressor frequency automatic adjustment;

[0155] 6) If the water temperature rises from 35℃ to 38℃, the water temperature change rate Ts is 0.5, water temperature difference T = 45°C - 38°C = 7°C. At this point, the compressor frequency increases by 4 Hz / cycle. For specific adjustments, refer to the cycle changes in Table 5.

[0156] Table 5

[0157]

[0158] After 600s, the compressor frequency of the unit maintained at 69Hz and the fan speed was 530r / min.

[0159] This application example can enable the unit to:

[0160] 1. Load dynamic calculation and frequency modulation: Through the water temperature and ambient temperature parameters, the compressor speed is adjusted in real time according to the load changes, so that the unit can be adjusted gradually and stably from startup to stability.

[0161] 2. Dynamic fan speed adjustment: Through parameters such as water temperature, ambient temperature, compressor load, and enthalpy increase function startup, the fan speed is dynamically adjusted according to the load, making the unit more energy-efficient and running at low noise for a longer time.

[0162] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0163] Based on the same inventive concept, embodiments of the present application also provide an air source heat pump fan speed control device for implementing the aforementioned air source heat pump fan speed control method. The solution to the problem provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more air source heat pump fan speed control device embodiments provided below can be found in the above-mentioned limitations of the air source heat pump fan speed control method, and will not be repeated here.

[0164] In an exemplary embodiment, Figure 3 As shown, a control device for speed regulation of an air source heat pump fan is provided. The control device 300 for speed regulation of an air source heat pump fan may include:

[0165] The temperature division module 301 is used to divide the ambient temperature into multiple temperature intervals.

[0166] The temperature acquisition module 302 is used to obtain the current ambient temperature of the air source heat pump; determine the temperature range corresponding to the current ambient temperature;

[0167] The speed acquisition module 303 is configured to acquire, based on the temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range, and a preset maximum operating frequency of the compressor corresponding to the temperature range; the preset maximum operating frequency represents the maximum value of the operating frequency of the compressor that is increased to meet the heating amount within the temperature range corresponding to the current ambient temperature; the preset maximum speed represents the wind speed that matches the preset maximum operating frequency;

[0168] A coefficient determination module 304 is configured to determine a compressor frequency ratio coefficient based on the actual operating frequency of the compressor and the preset maximum operating frequency;

[0169] The speed determination module 305 is configured to determine a target speed of the fan according to the preset maximum speed and the compressor frequency ratio.

[0170] In an exemplary embodiment, the device 300 also includes: a first correction module, which is used to obtain an ambient humidity coefficient from a preset temperature interval parameter according to the temperature interval corresponding to the current ambient temperature; determine an evaporation temperature difference correction coefficient according to the difference between the evaporation temperature and the current ambient temperature; and correct the target speed according to the ambient humidity coefficient and the evaporation temperature difference correction coefficient to obtain a corrected speed of the fan.

[0171] In an exemplary embodiment, the air source heat pump also includes an enthalpy increase circuit, and the device 300 also includes: a second correction module, which is used to obtain the ambient humidity coefficient and the enthalpy increase performance coefficient from the preset temperature interval parameters according to the temperature interval corresponding to the current ambient temperature; determine the evaporation temperature difference correction coefficient according to the difference between the evaporation temperature and the current ambient temperature; and correct the target speed according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient and the enthalpy increase performance coefficient to obtain the corrected speed of the fan.

[0172] In an exemplary embodiment, the device 300 also includes: a fan control module, which is used to control the fan to operate at the maximum speed when the corrected speed is greater than or equal to the maximum speed of the fan; and to control the fan to operate at the minimum speed when the corrected speed is less than or equal to the minimum speed of the fan.

[0173] In an exemplary embodiment, the coefficient determination module 304 is further configured to determine the compressor frequency ratio coefficient according to a ratio of the actual operating frequency to the preset maximum operating frequency and a preset compensation coefficient.

[0174] In an exemplary embodiment, the device 300 further includes: a speed updating module for periodically adjusting the target frequency of the compressor according to the actual water temperature and the target water temperature of the air source heat pump, and updating the target speed based on the adjusted target frequency.

[0175] In an exemplary embodiment, the speed update module is further configured to determine a temperature difference between the actual water temperature and the target water temperature, and determine a temperature change rate of the actual water temperature; and adjust the target frequency according to the temperature difference and the temperature change rate.

[0176] In an exemplary embodiment, the speed update module is further used to determine a difference interval corresponding to the temperature difference; determine a temperature change rate threshold corresponding to the temperature change rate based on the difference interval; when the temperature change rate is less than the temperature change rate threshold, increase the target frequency; when the temperature change rate is greater than the temperature change rate threshold, decrease the target frequency.

[0177] Each module in the aforementioned air source heat pump fan speed control device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a computer device memory in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0178] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 4 As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless means, and the wireless means can be achieved via Wi-Fi, mobile cellular networks, NFC (near-field communication), or other technologies. When executed by the processor, the computer program implements a method for controlling the speed regulation of an air source heat pump fan. The display unit of the computer device is used to produce a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0179] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0180] In an exemplary embodiment, a computer device is further provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0181] In an exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0182] In an exemplary embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0183] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), data processing logic devices based on quantum computing, and the like.

[0184] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0185] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for controlling the speed of an air source heat pump fan, wherein the air source heat pump comprises at least a fan and a compressor, characterized in that: The method comprises: Divide the ambient temperature into multiple temperature ranges. Obtaining the current ambient temperature of the air source heat pump; determining a temperature range corresponding to the current ambient temperature; Based on the temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range is obtained, and a preset maximum operating frequency of the compressor corresponding to the temperature range is obtained; the preset maximum operating frequency represents the maximum value of the operating frequency of the compressor that meets the heating amount within the temperature range corresponding to the current ambient temperature; the preset maximum speed represents the wind speed that matches the preset maximum operating frequency; Determining a compressor frequency ratio coefficient according to the actual operating frequency of the compressor and the preset maximum operating frequency; The target speed of the fan is determined according to the preset maximum speed and the compressor frequency ratio.

2. The method according to claim 1, characterized in that After determining the target speed of the fan according to the preset maximum speed and the compressor frequency ratio, the method further includes: Obtaining an ambient humidity coefficient from a preset temperature interval parameter according to the temperature interval corresponding to the current ambient temperature; determining an evaporation temperature difference correction coefficient according to a difference between the evaporation temperature and the current ambient temperature; The target rotational speed is corrected according to the ambient humidity coefficient and the evaporation temperature difference correction coefficient to obtain a corrected rotational speed of the fan.

3. The method according to claim 1, characterized in that The air source heat pump further includes an enthalpy increase circuit, which, after determining the target speed of the fan according to the preset maximum speed and the compressor frequency ratio, further includes: According to the temperature range corresponding to the current ambient temperature, the ambient humidity coefficient and the enthalpy increase performance coefficient are obtained from the preset temperature range parameters; determining an evaporation temperature difference correction coefficient according to a difference between the evaporation temperature and the current ambient temperature; The target speed is corrected according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient, and the enthalpy increase performance coefficient to obtain a corrected speed of the fan.

4. The method according to claim 3, characterized in that After the target speed is corrected according to the ambient humidity coefficient, the evaporation temperature difference correction coefficient, and the enthalpy increase performance coefficient to obtain the corrected speed of the fan, the method further includes: When the corrected speed is greater than or equal to the maximum speed of the fan, controlling the fan to operate at the maximum speed; When the corrected rotational speed is less than or equal to the minimum rotational speed of the fan, the fan is controlled to operate at the minimum rotational speed.

5. The method according to claim 1, wherein The determining of the compressor frequency ratio coefficient according to the actual operating frequency of the compressor and the preset maximum operating frequency includes: The compressor frequency ratio coefficient is determined according to the ratio of the actual operating frequency to the preset maximum operating frequency and a preset compensation coefficient.

6. The method according to claim 1, characterized in that After determining the target speed of the fan according to the preset maximum speed and the compressor frequency ratio, the method further includes: The target frequency of the compressor is periodically adjusted according to the actual water temperature and the target water temperature of the air source heat pump, and the target speed is updated based on the adjusted target frequency.

7. The method according to claim 6, characterized in that The periodically adjusting the target frequency of the compressor according to the actual water temperature and the target water temperature of the air source heat pump includes: determining a temperature difference between the actual water temperature and the target water temperature, and determining a temperature change rate of the actual water temperature; The target frequency is adjusted according to the temperature difference and the temperature change rate.

8. The method according to claim 7, characterized in that The adjusting the target frequency according to the temperature difference and the temperature change rate includes: Determining a difference interval corresponding to the temperature difference; Determining a temperature change rate threshold corresponding to the temperature change rate according to the difference interval; When the temperature change rate is less than the temperature change rate threshold, increasing the target frequency; When the temperature change rate is greater than the temperature change rate threshold, the target frequency is adjusted downward.

9. A control device for speed regulation of a fan of an air source heat pump, wherein the air source heat pump comprises at least a fan and a compressor, characterized in that: The device comprises: The temperature division module is used to divide the ambient temperature into multiple temperature intervals. A temperature acquisition module is used to obtain the current ambient temperature of the air source heat pump; and determine the temperature range corresponding to the current ambient temperature; a speed acquisition module, configured to acquire, based on a temperature range corresponding to the current ambient temperature, a preset maximum speed of the fan corresponding to the temperature range, and a preset maximum operating frequency of the compressor corresponding to the temperature range; the preset maximum operating frequency representing the maximum value of the operating frequency of the compressor that is increased to meet the heating amount within the temperature range corresponding to the current ambient temperature; and the preset maximum speed representing the wind speed that matches the preset maximum operating frequency; A coefficient determination module, configured to determine a compressor frequency ratio coefficient based on the actual operating frequency of the compressor and the preset maximum operating frequency; The speed determination module is used to determine the target speed of the fan according to the preset maximum speed and the compressor frequency ratio.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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