Heat pump unit operation control method and related device

Abstract

The invention provides a heat pump unit operation control method and a related device, and relates to the technical field of heat dissipation equipment. According to the scheme, the initial gear of a fan is configured based on different environment temperatures and water inlet temperatures when a heat pump unit is started for refrigeration operation, and then a target coil pipe temperature value is determined based on the environment temperatures; and finally, a target rotating speed adjusting mode is determined based on the difference value between the target coil pipe temperature value and the actual coil pipe temperature value, and the rotating speed of the draught fan is adjusted based on the target rotating speed adjusting mode. According to the scheme, the gear of the fan is adjusted based on the difference between the target coil pipe temperature value and the actual coil pipe temperature value at different environment temperatures, so that the operation of the heat pump unit is in an efficient and energy-saving working state. Compared with a traditional control method, the fan control mode has the advantages that the response speed is high, the control precision is high, the overshoot or oscillation problem cannot occur under the complex working condition, and the system operation is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation equipment, and in particular to a heat pump unit operation control method and related devices. Background Art

[0002] When the existing heat pump unit operates in refrigeration mode, the fan variable frequency control method usually adopts control based on ambient temperature or working condition parameters and PID closed-loop control. The control method based on ambient temperature or working condition parameters generally adjusts the fan speed according to the changes of working condition parameters such as outdoor ambient temperature, evaporator or condenser temperature. Although this method can adapt to load changes within a certain range, its response speed is slow, the control accuracy is low, and it is easy to cause unstable system operation. The PID closed-loop control method adjusts the fan frequency by setting the target temperature or pressure value and using the proportional-integral-derivative (PID) algorithm to make the system parameters approach the target value. However, the PID parameters need to be manually adjusted, and overshoot or oscillation problems may occur under complex working conditions. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a heat pump unit operation control method and related devices to provide a heat pump unit operation control method that can be accurate and stable.

[0004] To achieve the above object, embodiments of the present invention provide the following technical solutions:

[0005] A heat pump unit operation control method includes:

[0006] When the heat pump unit starts and operates in refrigeration mode, obtain the ambient temperature and the inlet water temperature of the heat pump unit;

[0007] Based on the ambient temperature and the inlet water temperature, identify the initial fan gear, wherein the higher the ambient temperature and the higher the inlet water temperature, the higher the initial fan gear;

[0008] Start the fan of the heat pump unit based on the initial fan gear;

[0009] Judge whether the start duration of the heat pump unit in refrigeration mode reaches a preset duration;

[0010] When the preset duration is reached, obtain the target coil temperature value of the heat exchanger corresponding to the ambient temperature, wherein the higher the ambient temperature, the higher the target coil temperature value;

[0011] Calculate the difference between the target coil temperature value and the actual coil temperature value, and record it as the coil temperature difference;

[0012] Identify the target temperature range corresponding to the coil temperature difference;

[0013] Obtain a target speed regulation method that matches the target temperature range, and adjust the speed of the fan based on the target speed regulation method. When the target coil temperature is lower than the actual coil temperature, the greater the difference between the two, the higher the fan speed level.

[0014] Optionally, in the above heat pump unit operation control method, obtaining a target speed regulation method that matches the target temperature range and adjusting the speed of the fan based on the target speed regulation method includes:

[0015] When the target temperature range is the first temperature range, control the speed of the fan to switch to the highest speed level;

[0016] When the target temperature range is the second temperature range, control the fan to increase one speed level every preset time period, and the minimum value of the second temperature range is greater than the maximum value of the first temperature range;

[0017] When the target temperature range is the third temperature range, control the speed level of the fan to remain unchanged, and the minimum value of the third temperature range is greater than the maximum value of the second temperature range;

[0018] When the target temperature range is the fourth temperature range, control the fan to decrease one speed level every preset time period until it decreases to the lowest speed level, and the minimum value of the fourth temperature range is greater than the maximum value of the third temperature range;

[0019] When the target temperature range is the fifth temperature range, control the speed level of the fan to remain at the lowest speed level, and the minimum value of the fifth temperature range is greater than the maximum value of the fourth temperature range;

[0020] The first temperature range, the second temperature range, the third temperature range, the fourth temperature range, and the fifth continuous range constitute a continuous full temperature range.

[0021] Optionally, in the above heat pump unit operation control method,

[0022] The maximum value of the first temperature range is X1, and X1 < 0;

[0023] The maximum value of the second temperature range is X2, and X1 < X2 < 0;

[0024] The maximum value of the third temperature range is X3, and X2 < X3;

[0025] The maximum value of the fourth temperature range is X4, and X3 < X4.

[0026] Optionally, in the above heat pump unit operation control method, the value of X1 is not greater than -12°C;

[0027] The value of X2 is not greater than -2°C;

[0028] The value of X3 is not greater than 3°C;

[0029] The value of X4 is not greater than 8°C.

[0030] Optionally, in the above heat pump unit operation control method, before adjusting the speed of the fan based on the target speed adjustment method, it further includes:

[0031] Obtaining a preset duration that matches the ambient temperature.

[0032] Optionally, in the above heat pump unit operation control method, before adjusting the speed of the fan based on the target speed adjustment method, it further includes:

[0033] Based on the ambient temperature and the inlet water temperature, determining the highest gear and the lowest gear of the fan.

[0034] A heat pump unit operation control device, including:

[0035] A temperature acquisition unit, when the heat pump unit starts to operate in the refrigeration mode, the temperature acquisition unit is used to obtain the ambient temperature and the inlet water temperature of the heat pump unit;

[0036] An initial gear identification unit, used to identify the initial gear of the fan based on the ambient temperature and the inlet water temperature, wherein, the higher the ambient temperature and the higher the inlet water temperature, the higher the initial gear of the fan;

[0037] A first fan control unit, used to start the fan of the heat pump unit based on the initial gear of the fan;

[0038] A target coil temperature identification unit, used to obtain the target coil temperature value of the heat exchanger corresponding to the ambient temperature when the heat pump unit has been operating in the refrigeration mode for a preset duration, wherein, the higher the ambient temperature, the higher the target coil temperature value;

[0039] An actual coil temperature identification unit, used to obtain the actual coil temperature value of the heat exchanger;

[0040] A temperature difference calculation unit, used to calculate the difference between the target coil temperature value and the actual coil temperature value, denoted as the coil temperature difference;

[0041] A second fan control unit, used to identify the target temperature range corresponding to the coil temperature difference, obtain a target speed adjustment method that matches the target temperature range, and adjust the speed of the fan based on the target speed adjustment method.

[0042] An electronic device, including: at least one processing device and a storage device connected to the processing device, wherein:

[0043] The storage device is used to store a computer program;

[0044] The processing device is used to execute the computer program, so that the electronic device can implement any one of the above-mentioned heat pump unit operation control methods.

[0045] A heat pump unit includes: the above-mentioned electronic device.

[0046] A device includes a power module that needs to be temperature-controlled and the above-mentioned heat pump unit.

[0047] Based on the above technical solutions, the above solution provided by the embodiments of the present invention configures the initial gear of the fan when the heat pump unit starts to operate refrigeration based on different ambient temperatures and inlet water temperatures, then determines the target coil temperature value based on the ambient temperature, and finally determines the target speed adjustment method based on the difference between the target coil temperature value and the actual coil temperature value, and adjusts the speed of the fan based on the target speed adjustment method. This solution adjusts the gear of the fan based on the difference between the target coil temperature value and the actual coil temperature value under different ambient temperatures, so that the operation of the heat pump unit is in an efficient and energy-saving working state. This kind of fan control method has a fast response speed and high control accuracy compared with the traditional control method, and there will be no overshoot or oscillation problems under complex working conditions, and the system runs stably. Description of the Drawings

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative work.

[0049] Figure 1 It is a schematic flowchart of a heat pump unit operation control method disclosed in an embodiment of the present application;

[0050] Figure 2 It is a schematic flowchart of a heat pump unit operation control method disclosed in another embodiment of the present application;

[0051] Figure 3 It is a schematic diagram of the division of a temperature range disclosed in an embodiment of the present application;

[0052] Figure 4 It is a schematic structural diagram of a heat pump unit operation control device disclosed in an embodiment of the present application;

[0053] Figure 5 It is a schematic structural diagram of a heat pump unit operation control device disclosed in another embodiment of the present application;

[0054] Figure 6 This is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application. Detailed implementation manners

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] The present application discloses a method for controlling the operation of a heat pump unit. This method adjusts the fan speed based on the difference between the target coil temperature value and the actual coil temperature value of the heat pump unit under different ambient temperatures, so that the operation of the heat pump unit is in an efficient and energy-saving working state. Compared with the traditional control methods based on ambient temperature or working condition parameters and PID closed-loop control, this method has a fast response speed, high control accuracy, and can achieve precise temperature control under complex working conditions, ensuring the efficient and stable operation of the unit.

[0057] See Figure 1 , the present application discloses a method for controlling the operation of a heat pump unit, and this method may include:

[0058] Step S101: When the heat pump unit starts and operates in the refrigeration mode, obtain the ambient temperature and the inlet water temperature of the heat pump unit;

[0059] The ambient temperature directly affects the performance of the evaporator of the heat pump unit (the evaporator absorbs heat from the air in the refrigeration mode). If the ambient temperature is too high or too low, it may cause the refrigeration capacity of the unit to decrease or the energy consumption to increase. The inlet water temperature reflects the temperature of the coolant (such as water) entering the condenser in the pump unit, and directly affects the heat dissipation efficiency of the condenser. Too high inlet water temperature may cause the condensation pressure to rise, affecting the system stability.

[0060] Generally, a platinum resistance temperature sensor (PT100 / PT1000) or an NTC thermistor is used to obtain the ambient temperature of the heat pump unit. The platinum resistance temperature sensor / NTC thermistor is installed outside the heat pump unit (away from the heat source and avoiding direct sunlight). Generally, a platinum resistance temperature sensor (PT100 / NTC) is used to collect the inlet water temperature. This sensor is installed in the inlet pipe of the condenser, and it is necessary to ensure that there is a sufficient length of straight pipe section in front of the sensor (to avoid the influence of eddy current on the accuracy). If it is a multi-loop system, sensors need to be installed at the inlet of each loop respectively.

[0061] Step S102: Identify the initial fan speed based on the ambient temperature and the inlet water temperature.

[0062] In this embodiment, multiple gears are set for the fan of the heat pump unit. Under different gears, the rotation speed of the fan is different. Different fan rotation speeds will result in different heat dissipation efficiencies of the heat pump unit. As shown in Table 1, the fan has n gears, and the higher the gear, the higher the rotation speed of the fan.

[0063]

[0064] Table 1 Fan gears at different rotation speeds

[0065] In this embodiment, under different ambient temperatures and different inlet water temperatures, when the heat pump unit starts and operates in the refrigeration mode, the required heat dissipation efficiency of the heat pump unit is different. As shown in Table 2, the higher the ambient temperature and the higher the inlet water temperature, the higher the required heat dissipation efficiency of the heat pump unit. Therefore, the initial gear of the fan is higher.

[0066]

[0067] Table 2

[0068] Step S103: Start the fan of the heat pump unit based on the initial gear of the fan.

[0069] After determining the initial gear of the fan, start the fan based on the initial gear of the fan and maintain it for a preset duration to ensure the reliable start of the heat pump unit. Among them, the specific value of the preset duration can be selected according to the design requirements. For example, in this embodiment, the preset duration can be 10 s, that is, after the heat pump unit starts, control the fan of the heat pump unit to operate at the initial gear of the fan for 10 s, and then execute step S105 and subsequent steps.

[0070] Step S104: Determine whether the start duration of the heat pump unit in the refrigeration mode reaches the preset duration.

[0071] In this step, the working duration after the heat pump unit starts in the refrigeration mode is detected. After its start for the preset duration, execute the subsequent steps. Among them, the working duration after the heat pump unit starts in the refrigeration mode can be equivalent to the running duration of the fan operating at the initial gear of the fan. When the preset duration is reached, execute the subsequent steps.

[0072] Step S105: Obtain the target coil temperature value of the heat exchanger corresponding to the ambient temperature, where the higher the ambient temperature, the higher the target coil temperature value.

[0073] The target coil temperature is an ideal operating parameter calculated by the heat pump unit based on the current ambient temperature and user requirements (such as heating / cooling). For example, in the heating mode, if the ambient temperature is 5°C, the unit may set the target coil temperature to 35°C to achieve efficient heat exchange; in the cooling mode, when the ambient temperature is 30°C, the target coil temperature may be set to 10°C to maintain a low indoor temperature. Therefore, in this step, after detecting that the heat pump unit has been running in the cooling mode for a preset duration, it is necessary to determine the target coil temperature value of the heat exchanger based on the ambient temperature. Different ambient temperatures correspond to different target coil temperatures. In the technical solution disclosed in this embodiment, the relationship between the ambient temperature and the target coil temperature can be seen in Table 3 below.

[0074]

[0075] Table 3

[0076] Among them, Ta in Table 3 is the ambient temperature.

[0077] Step S106: Calculate the difference between the target coil temperature value and the actual coil temperature value, denoted as the coil temperature difference.

[0078] In this step, it is necessary to adjust the operating state of the fan based on the difference between the target coil temperature value and the actual coil temperature value. Therefore, it is necessary to calculate the difference between the target coil temperature value and the actual coil temperature value. In this solution, the difference between the two is denoted as the coil temperature difference.

[0079] Step S107: Identify the target temperature range corresponding to the coil temperature difference.

[0080] In this embodiment, the coil temperature difference is pre-divided into multiple temperature ranges, and these temperature ranges are continuously distributed within the full temperature range. After determining the coil temperature difference, obtain the target temperature range corresponding to the coil temperature difference.

[0081] Step S108: Obtain the target speed adjustment method matching the target temperature range, and adjust the speed of the fan based on the target speed adjustment method. Among them, when the target coil temperature is lower than the actual coil temperature, the greater the difference between the two, the higher the fan speed gear.

[0082] The present application provides a method for controlling the operation of a heat pump unit. This solution configures the initial gear of the fan when the heat pump unit starts refrigeration operation based on different ambient temperatures and inlet water temperatures, then determines the target coil temperature value based on the ambient temperature, and finally determines the target speed adjustment method based on the difference between the target coil temperature value and the actual coil temperature value, and adjusts the speed of the fan based on the target speed adjustment method. This solution adjusts the gear of the fan based on the difference between the target coil temperature value and the actual coil temperature value under different ambient temperatures, so that the operation of the heat pump unit is in an efficient and energy-saving working state. This fan control method has a fast response speed and high control accuracy compared with the traditional control method, and there will be no overshoot or oscillation problems under complex working conditions, and the system runs stably. At the same time, this method has strong practicability. The system can quickly respond to temperature changes and load fluctuations, reduce oscillation and instability phenomena, and enhance the reliability and application range of the system.

[0083] In this embodiment, the difference between the target coil temperature value and the actual coil temperature value is divided into five temperature intervals, which are respectively denoted as the first temperature interval, the second temperature interval, the third temperature interval, the fourth temperature interval and the fifth temperature interval. The first temperature interval, the second temperature interval, the third temperature interval, the fourth temperature interval and the fifth temperature interval form a continuous full temperature interval. Different temperature intervals correspond to different fan speed adjustment strategies. At this time, refer to Figure 2 , obtaining the target speed adjustment method matching the target temperature interval, and adjusting the speed of the fan based on the target speed adjustment method includes:

[0084] Step S201: When the target temperature interval is the first temperature interval, control the speed of the fan to switch to the highest gear.

[0085] The first temperature interval is the temperature interval where the target coil temperature value is less than the actual coil temperature value and the difference between the target coil temperature value and the actual coil temperature value is the largest. At this time, since the actual coil temperature value is much greater than the target coil temperature value, the heat pump unit needs to have extremely strong heat dissipation ability at this time. Therefore, it is necessary to control the speed of the fan to switch to the highest gear so that the fan can output the maximum power allowed.

[0086] Step S202: When the target temperature interval is the second temperature interval, control the fan to increase one gear every preset time period, and the minimum value of the second temperature interval is greater than the maximum value of the first temperature interval.

[0087] The second temperature range is the temperature range where the target coil temperature value is less than the actual coil temperature value, and the difference between the target coil temperature value and the actual coil temperature value is relatively small. The minimum value of the second temperature range is greater than the maximum value of the first temperature range. At this time, since the actual coil temperature value is greater than the target coil temperature value but the difference between them is small, it is necessary to appropriately increase the heat dissipation capacity of the heat pump unit. Also, it is necessary to prevent the fan speed from being too high. Therefore, the fan speed needs to be increased by one level every preset time interval until the target temperature range switches to the third temperature range or the first temperature range.

[0088] Step S203: When the target temperature range is the third temperature range, control the fan speed to remain unchanged. The minimum value of the third temperature range is greater than the maximum value of the second temperature range.

[0089] In this embodiment, the difference between the target coil temperature value and the actual coil temperature value is relatively small and remains within a stable temperature difference range. At this time, it is sufficient to keep the fan running at the current speed state without increasing or decreasing the fan speed.

[0090] Step S204: When the target temperature range is the fourth temperature range, control the fan to decrease by one level every preset time interval until it reaches the lowest level. The minimum value of the fourth temperature range is greater than the maximum value of the third temperature range.

[0091] The fourth temperature range is the temperature range where the target coil temperature value is greater than the actual coil temperature value, and the difference between the target coil temperature value and the actual coil temperature value is relatively small. The minimum value of the fourth temperature range is greater than the maximum value of the third temperature range. At this time, since the actual coil temperature value is less than the target coil temperature value but the difference between them is small, it is necessary to appropriately decrease the heat dissipation capacity of the heat pump unit. Also, it is necessary to prevent the fan speed from being too low. Therefore, the fan speed needs to be decreased by one level every preset time interval until the target temperature range switches to the fifth temperature range or the third temperature range.

[0092] Step S205: When the target temperature range is the fifth temperature range, control the fan speed to remain at the lowest level. The minimum value of the fifth temperature range is greater than the maximum value of the fourth temperature range.

[0093] The fifth temperature range is the temperature range where the target coil temperature value is greater than the actual coil temperature value, and the difference between the target coil temperature value and the actual coil temperature value is relatively large. At this time, since the actual coil temperature value is much less than the target coil temperature value, it is only necessary for the heat pump unit to have a low heat dissipation capacity to maintain the normal operation of the system. Therefore, it is necessary to control the fan speed to switch to the lowest level.

[0094] In this embodiment, the maximum value of the first temperature range is X1, where X1 < 0, that is, the first temperature range is an open interval with the maximum value of X1. The maximum value of the second temperature range is X2, where X1 < X2 < 0. The maximum value of the third temperature range is X3, where X2 < X3. The maximum value of the fourth temperature range is X4, where X3 < X4. At this time, the fifth temperature range is an open interval with the minimum value greater than X4. This embodiment also provides specific values of X1, X2, X3, and X4. For example, the value of X1 is not greater than -12°C, the value of X2 is not greater than -2°C, the value of X3 is not greater than 3°C, and the value of X4 is not greater than 8°C. As Figure 3 shown, X1 = -12°C, X2 = -2°C, X3 = 3°C, and X4 = 8°C.

[0095] In this embodiment, when the ambient temperature is different, at the same fan speed, the change speed of the coil temperature is different. Therefore, at different ambient temperatures, the speed of adjusting the fan speed gear is also different. Therefore, when "controlling the fan to increase one gear every preset duration" / "controlling the fan to decrease one gear every preset duration", the values of the preset durations configured for different ambient temperatures are different. Therefore, before adjusting the speed of the fan based on the target speed adjustment method, it further includes: obtaining a preset duration that matches the ambient temperature. For example, in this embodiment, when the ambient temperature is not less than 5°C, the preset duration can be set to 20 seconds, that is, controlling the fan to increase one gear every 20 seconds" / "controlling the fan to decrease one gear every 20 seconds. When the ambient temperature is less than 5°C, the preset duration can be set to 30 seconds, that is, controlling the fan to increase one gear every 30 seconds" / "controlling the fan to decrease one gear every 30 seconds.

[0096] When the heat pump unit operates in the refrigeration mode, the maximum and minimum heat dissipation efficiencies required by the heat pump unit are different when the ambient temperature and the inlet water temperature are different. For example, when the ambient temperature and the inlet water temperature are high, a higher heat dissipation efficiency is required for the heat pump unit. At this time, the fan needs to operate at a higher gear. When the ambient temperature and the inlet water temperature are low, a lower heat dissipation efficiency is required for the heat pump unit. At this time, the fan needs to operate at a lower gear. Therefore, in this embodiment, during the refrigeration operation of the heat pump unit, the lowest and highest gears of the fan during the variable-frequency operation of the fan are divided into different values according to the differences in the ambient temperature and the inlet water temperature of the heat pump unit. In this embodiment, the gear limits of the fan vary depending on the differences in the ambient temperature and the inlet water temperature of the heat pump unit, that is, all changes in the fan speed need to operate within the range defined by the fan gear limit table. Compared with the traditional control methods based on ambient temperature or operating condition parameters and PID closed-loop control, this method has a fast response speed, high control accuracy, and can achieve precise temperature control under complex working conditions, ensuring the efficient and stable operation of the unit. As shown in Table 4. During the operation of the fan, the gear of the fan always remains between the lowest and highest gears and does not cross the specified limits in the table.

[0097]

[0098] Table 4

[0099] Among them, Tewi in the table is the inlet water temperature, and Ta is the ambient temperature.

[0100] In this embodiment, a heat pump unit operation control device is provided. For the specific working content of each unit in the device, please refer to the content of the above method embodiment.

[0101] The heat pump unit operation control device provided by the embodiment of the present invention will be described below. The heat pump unit operation control device described below can be correspondingly referred to the heat pump unit operation control method described above. Refer to Figure 4 , the heat pump unit operation control device may include:

[0102] A temperature acquisition unit 10, which is used to acquire the ambient temperature and the inlet water temperature of the heat pump unit when the heat pump unit starts and operates in the refrigeration mode;

[0103] An initial gear identification unit 20, which is used to identify the initial gear of the fan based on the ambient temperature and the inlet water temperature. Among them, the higher the ambient temperature and the inlet water temperature, the higher the initial gear of the fan;

[0104] A first fan control unit 30, which is used to start the fan of the heat pump unit based on the initial gear of the fan;

[0105] The target coil temperature recognition unit 40 is configured to obtain the target coil temperature value of the heat exchanger corresponding to the ambient temperature after the refrigeration start preset duration of the heat pump unit, wherein the higher the ambient temperature, the higher the target coil temperature value;

[0106] The actual coil temperature recognition unit 50 is configured to obtain the actual coil temperature value of the heat exchanger;

[0107] The temperature difference calculation unit 60 is configured to calculate the difference between the target coil temperature value and the actual coil temperature value, denoted as the coil temperature difference;

[0108] The second fan control unit 70 is configured to identify the target temperature range corresponding to the coil temperature difference, obtain the target speed adjustment method matching the target temperature range, and adjust the speed of the fan based on the target speed adjustment method.

[0109] See Figure 5 , corresponding to the above method, the above device may further include: a preset duration determination unit 80, configured to obtain the preset duration matching the ambient temperature.

[0110] See Figure 5 , corresponding to the above method, the above device may further include: a gear configuration unit 90, configured to determine the highest gear and the lowest gear of the fan based on the ambient temperature and the inlet water temperature.

[0111] In an embodiment of the present application, an electronic device is further provided. The electronic device includes at least one processing device and a storage device connected to the processing device, wherein: the storage device is configured to store a computer program; the processing device is configured to execute the computer program so that the electronic device can implement any one of the above heat pump unit operation control methods. Refer to Figure 6 shown, which shows a schematic structural diagram of an electronic device suitable for implementing the electronic device in the embodiment of the present application. Figure 6 The electronic device shown is only an example and should not bring any limitation to the functions and usage scope of the embodiment of the present application.

[0112] As Figure 6 shown, the electronic device may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage device 608 to the random access memory (RAM) 603. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. The input / output (I / O) interface 605 is also connected to the bus 604.

[0113] Typically, the following devices can be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a memory card, a hard disk, etc.; and a communication device 609. The communication device 609 can allow the electronic device to communicate with other devices wirelessly or wiredly to exchange data. Although Figure 6 an electronic device with various devices is shown, it should be understood that it is not required to implement or have all the shown devices. Instead, more or fewer devices can be implemented or had.

[0114] An embodiment of the present application also provides a computer program product including computer-readable instructions, which, when running on an electronic device, enable the electronic device to implement any one of the heat pump unit operation control methods provided by the embodiments of the present application.

[0115] An embodiment of the present application also provides a computer-readable storage medium carrying one or more computer programs, which, when executed by an electronic device, can enable the electronic device to implement any one of the heat pump unit operation control methods provided by the embodiments of the present application.

[0116] Corresponding to the above electronic device, the present application also discloses a heat pump unit including the above-mentioned electronic device.

[0117] Corresponding to the above heat pump unit, the present application also discloses a device applying a power module for which temperature control is required and the above-mentioned heat pump unit.

[0118] For the convenience of description, when describing the above system, it is divided into various modules according to functions for separate description. Of course, when implementing the present invention, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0119] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for a system or a system embodiment, since it is basically similar to a method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0120] Those skilled in the art can further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in this article can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0121] The steps of the method or algorithm described in combination with the embodiments disclosed in this article can be directly implemented by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the technical field.

[0122] It should also be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0123] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling the operation of a heat pump unit, characterized in that, Including: When the heat pump unit starts and operates in the refrigeration mode, obtain the ambient temperature and the inlet water temperature of the heat pump unit; Identify the initial fan gear based on the ambient temperature and the inlet water temperature, wherein the higher the ambient temperature and the higher the inlet water temperature, the higher the initial fan gear; Start the fan of the heat pump unit based on the initial fan gear; Judge whether the startup duration of the heat pump unit in the refrigeration mode reaches a preset duration; When the preset duration is reached, obtain the target coil temperature value of the heat exchanger corresponding to the ambient temperature, wherein the higher the ambient temperature, the higher the target coil temperature value; Calculate the difference between the target coil temperature value and the actual coil temperature value, denoted as the coil temperature difference; Identify the target temperature range corresponding to the coil temperature difference; Obtain the target speed adjustment method matching the target temperature range, and adjust the speed of the fan based on the target speed adjustment method. When the target coil temperature is lower than the actual coil temperature, the greater the difference between the two, the higher the fan gear.

2. The operation control method of the heat pump unit according to claim 1, characterized in that Obtain the target speed adjustment method matching the target temperature range, and adjusting the speed of the fan based on the target speed adjustment method includes: When the target temperature range is the first temperature range, control the speed of the fan to switch to the highest gear; When the target temperature range is the second temperature range, control the fan to increase one gear every preset duration, and the minimum value of the second temperature range is greater than the maximum value of the first temperature range; When the target temperature range is the third temperature range, control the fan gear to remain unchanged, and the minimum value of the third temperature range is greater than the maximum value of the second temperature range; When the target temperature range is the fourth temperature range, control the fan to decrease one gear every preset duration until it decreases to the lowest gear, and the minimum value of the fourth temperature range is greater than the maximum value of the third temperature range; When the target temperature range is the fifth temperature range, control the fan gear to remain at the lowest gear, and the minimum value of the fifth temperature range is greater than the maximum value of the fourth temperature range; The first temperature range, the second temperature range, the third temperature range, the fourth temperature range and the fifth continuous range constitute a continuous full temperature range.

3. The heat pump unit operation control method according to claim 1, characterized in that The maximum value of the first temperature range is X1, X1 < 0; The maximum value of the second temperature range is X2, X1 < X2 < 0; The maximum value of the third temperature range is X3, X2 < X3; The maximum value of the fourth temperature range is X4, X3 < X4.

4. The heat pump unit operation control method according to claim 3, characterized in that The value of X1 is not greater than -12°C; The value of X2 is not greater than -2°C; The value of X3 is not greater than 3°C; The value of X4 is not greater than 8°C.

5. The operation control method of the heat pump unit according to any one of claims 2-4, characterized in that, Before adjusting the speed of the fan based on the target speed adjustment method, it further includes: Obtain the preset duration matching the ambient temperature.

6. The operation control method of the heat pump unit according to any one of claims 2-4, characterized in that Before adjusting the speed of the fan based on the target speed adjustment method, it further includes: Determine the highest gear and the lowest gear of the blower based on the ambient temperature and the inlet water temperature.

7. A running control device for a heat pump unit, characterized in that, Comprising: A temperature acquisition unit, when the heat pump unit starts and operates in the refrigeration mode, the temperature acquisition unit is used to obtain the ambient temperature and the inlet water temperature of the heat pump unit; An initial gear identification unit, configured to identify the initial gear of the blower based on the ambient temperature and the inlet water temperature, wherein the higher the ambient temperature and the higher the inlet water temperature, the higher the initial gear of the blower; A first blower control unit, configured to start the blower of the heat pump unit based on the initial gear of the blower; A target coil temperature identification unit, configured to obtain the target coil temperature value of the heat exchanger corresponding to the ambient temperature after the heat pump unit has been started in the refrigeration mode for a preset duration, wherein the higher the ambient temperature, the higher the target coil temperature value; An actual coil temperature identification unit, configured to obtain the actual coil temperature value of the heat exchanger; A temperature difference calculation unit, configured to calculate the difference between the target coil temperature value and the actual coil temperature value, denoted as the coil temperature difference; A second blower control unit, configured to identify the target temperature range corresponding to the coil temperature difference, obtain the target speed regulation method matching the target temperature range, and regulate the speed of the blower based on the target speed regulation method.

8. An electronic device, characterized in that, Comprising: At least one processing device and a storage device connected to the processing device, wherein: The storage device is used to store a computer program; The processing device is configured to execute the computer program so that the electronic device can implement the heat pump unit operation control method according to any one of claims 1 to 6.

9. A heat pump unit, characterized in that, Comprising: The electronic device according to claim 8.

10. A device, characterized in that, Comprising a power module that needs to be temperature-controlled and the heat pump unit according to claim 9.

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