A heat pump unit starting method and device, heat pump unit and storage medium

Abstract

Embodiments of the present application disclose a heat pump unit starting method and device, a heat pump unit and a storage medium. In the process of starting the heat pump unit, the first target frequency required by the compressor in the first starting stage is determined according to the ambient temperature at the time of starting. Then, the second target frequency required by the compressor after entering the second starting stage is determined according to the ambient temperature, the oil temperature at the end of the first starting stage and the first target frequency. The duration of the second starting stage can be determined according to the first target frequency, the second target frequency and the first duration of the first starting stage. In the embodiments of the present application, the frequency required by the compressor in the starting process and the duration of the second starting stage are associated with the ambient temperature and the oil temperature, so that the frequency and the duration of the compressor in the starting process can adapt to different ambient temperatures and oil temperatures, and the stability of the heat pump unit in the starting process is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of heat pump units, and in particular to a heat pump unit starting method, device, heat pump unit, and storage medium. Background Art

[0002] A two-way heat pump unit refers to a device that uses an air source heat pump system to provide hot water, heating, or both heating and cooling. A two-way heat pump unit usually consists of a compressor, a finned heat exchanger, a shell-and-tube heat exchanger, and a water pump.

[0003] Existing dual-energy heat pump units have essentially the same startup behavior under different load conditions. However, during startup under different load conditions, the startup frequency and startup duration of the dual-energy heat pump units cannot adapt to the current ambient temperature and the oil temperature at the bottom of the compressor, resulting in unstable operation of the dual-energy heat pump units during startup. Summary of the Invention

[0004] The embodiments of the present invention provide a heat pump unit startup method, device, heat pump unit and storage medium, which solve the technical problem in the prior art that a dual-energy heat pump unit cannot operate stably during startup.

[0005] In a first aspect, an embodiment of the present invention provides a method for starting a heat pump unit, which is applicable to a heat pump unit including a compressor, and the heat pump unit is used to adjust the temperature of a target area, comprising the following steps:

[0006] In response to a heat pump unit startup instruction, determining an ambient temperature of the target area;

[0007] Determining a first duration of a first startup phase, and determining a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase based on the ambient temperature;

[0008] Controlling the heat pump unit to start and enter the first startup phase, and controlling the frequency of the compressor to reach the first target frequency within a first duration of the first startup phase;

[0009] After the first startup phase ends, controlling the heat pump unit to enter a second startup phase and detecting the current oil temperature of the heat pump unit;

[0010] determining, based on the first target frequency, the ambient temperature, and the oil temperature, a second target frequency that the compressor needs to reach at the end of the second startup phase;

[0011] determining a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration;

[0012] During a second duration of the second startup phase, the frequency of the compressor is controlled to increase from the first target frequency to the second target frequency.

[0013] The step of determining, based on the ambient temperature, a first target frequency that the compressor needs to reach at the end of the first startup phase of the heat pump unit includes:

[0014] When the ambient temperature is lower than a temperature threshold, determining a first preset frequency as a first target frequency that the compressor needs to reach;

[0015] When the ambient temperature is greater than or equal to the temperature threshold, a second preset frequency is determined as the first target frequency that the compressor needs to reach, and the second preset frequency is greater than the first preset frequency.

[0016] The step of determining, based on the first target frequency, the ambient temperature, and the oil temperature, a second target frequency that the compressor needs to reach at the end of the second startup phase includes:

[0017] When the ambient temperature is lower than the temperature threshold, determining, based on the first target frequency, the ambient temperature, the oil temperature, and a first preset rule, a second target frequency that the compressor needs to reach at the end of the second startup phase;

[0018] When the ambient temperature is greater than or equal to the temperature threshold, a second target frequency that the compressor needs to reach at the end of the second startup phase is determined according to the first target frequency, the oil temperature, and a second preset rule.

[0019] Wherein, when the ambient temperature is less than the temperature threshold, the second target frequency is determined as follows:

[0020]

[0021] Wherein, F is the second target frequency, F1 is the first target frequency, T oil is the oil temperature, T a is the ambient temperature.

[0022] Wherein, when the ambient temperature is greater than or equal to the temperature threshold, the second target frequency is determined as follows:

[0023]

[0024] Wherein, F1 is the first target frequency, T oil is the oil temperature.

[0025] The determining, according to the first target frequency, the second target frequency, and the first duration, of the second startup phase includes:

[0026] determining a ratio of the first target frequency to the second target frequency;

[0027] A product of the first duration and the ratio is determined to obtain a second duration of the second startup phase.

[0028] The first duration is a preset duration.

[0029] In a second aspect, an embodiment of the present invention provides a heat pump unit starting device, applicable to a heat pump unit, wherein the heat pump unit includes a compressor, and the heat pump unit is used to adjust the temperature of a target area. The heat pump unit starting device includes:

[0030] An instruction response module, configured to determine the ambient temperature of the target area in response to a heat pump unit start-up instruction;

[0031] a first frequency determination module, configured to determine a first duration of a first startup phase, and determine, based on the ambient temperature, a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase;

[0032] a first starting module, configured to control the heat pump unit to start up and enter the first starting phase, and control the frequency of the compressor to reach the first target frequency within a first duration of the first starting phase;

[0033] a second starting module, configured to control the heat pump unit to enter a second starting phase after the first starting phase ends, and detect the current oil temperature of the heat pump unit;

[0034] a second frequency determination module, configured to determine, based on the first target frequency, the ambient temperature, and the oil temperature, a second target frequency that the compressor needs to reach at the end of the second startup phase;

[0035] a duration determining module, configured to determine a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration;

[0036] The frequency control module is configured to control the frequency of the compressor to increase from the first target frequency to the second target frequency during a second duration of the second startup phase.

[0037] In a third aspect, an embodiment of the present invention provides a heat pump unit, wherein the heat pump unit includes a processor and a memory;

[0038] The memory is used to store a computer program and transmit the computer program to the processor;

[0039] The processor is configured to execute a heat pump unit starting method as described in the first aspect according to instructions in the computer program.

[0040] In a fourth aspect, an embodiment of the present invention provides a storage medium storing computer-executable instructions, wherein the computer-executable instructions, when executed by a computer processor, are used to execute a heat pump unit starting method as described in the first aspect.

[0041] An embodiment of the present invention provides a method, device, heat pump unit, and storage medium for starting a heat pump unit. During the startup process of the heat pump unit, the embodiment of the present invention determines the first target frequency that the compressor needs to reach in the first startup phase based on the ambient temperature at startup, and then determines the second target frequency that the compressor needs to reach after entering the second startup phase based on the ambient temperature, the oil temperature at the end of the first startup phase, and the first target frequency. The duration of the second startup phase can also be determined based on the first target frequency, the second target frequency, and the first duration of the first startup phase. The embodiment of the present invention associates the frequency that the compressor needs to reach and the duration of the second startup phase with the ambient temperature and the oil temperature during the startup process, so that the frequency and startup duration of the compressor during the startup process can adapt to different ambient temperatures and oil temperatures, thereby improving the stability of the heat pump unit during the startup process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic flow chart of a method for starting a heat pump unit provided in an embodiment of the present invention.

[0043] Figure 2 This is a structural diagram of a dual-energy heat pump unit provided in an embodiment of the present invention.

[0044] Figure 3 A schematic diagram of the principle of starting a dual-energy heat pump unit provided by an embodiment of the present invention.

[0045] Figure 4 This is a structural schematic diagram of a heat pump unit starting device provided by an embodiment of the present invention.

[0046] Figure 5 A circuit schematic diagram of a heat pump unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following description and accompanying drawings sufficiently illustrate specific embodiments of the present application to enable those skilled in the art to practice them. The examples represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The scope of the embodiments of the present application includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, each embodiment may be referred to individually or collectively by the term "invention," which is merely for convenience and is not intended to automatically limit the scope of the application to any single invention or inventive concept if more than one invention is in fact disclosed. Herein, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another, and do not require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, or apparatus comprising a set of elements includes not only those elements, but also other elements not explicitly listed. The various embodiments herein are described in a progressive manner, with each embodiment focusing on the differences from the other embodiments. Reference can be made to the common and similar parts between the various embodiments. For structures, products, etc. disclosed in the embodiments, the description is relatively simple because they correspond to the parts disclosed in the embodiments. For relevant parts, refer to the method description.

[0048] Existing dual-energy heat pump units have essentially the same startup behavior under different load conditions. However, when starting under different load conditions, the startup frequency and startup duration of the dual-energy heat pump unit must adapt to the current ambient temperature and the oil temperature at the bottom of the compressor. For example, if the frequency increases too quickly during startup at low ambient temperatures, the system will experience liquid backflow. Due to the compatibility between the refrigerant and the compressor oil, this backflow can draw oil from the bottom of the compressor, causing oil starvation and poor lubrication, thus affecting the normal operation of the dual-energy heat pump unit.

[0049] Based on this, in order to solve the above technical problems, the embodiment of the present invention provides a method for starting a heat pump unit, such as Figure 1 As shown, Figure 1 This is a flow chart of a method for starting a heat pump unit provided by an embodiment of the present invention. The method for starting a heat pump unit provided by an embodiment of the present invention is applicable to a heat pump unit. The heat pump unit includes a compressor. The heat pump unit is used to adjust the temperature of a target area, such as a room. In this embodiment, the heat pump unit is a dual-energy heat pump unit as an example. For example, Figure 2 As shown, Figure 2This is a structural schematic diagram of a two-way heat pump unit provided in an embodiment of the present invention. The two-way heat pump unit includes: a compressor 1, a four-way valve 2, a shell and tube heat exchanger 3, an economizer 4, a main electronic expansion valve 5, a fin heat exchanger 6, a gas-liquid separator 7 and an auxiliary electronic expansion valve 8.

[0050] The heating cycle of the dual heat pump unit is:

[0051] Compressor 1 exhaust → four-way valve 2 → shell and tube heat exchanger 3 → economizer 4 → main electronic expansion valve 5 → fin heat exchanger 6 → four-way valve 2 → gas-liquid separator 7 → compressor 1.

[0052] Air replenishment and enthalpy increase part: part of the refrigerant in economizer 4 → auxiliary electronic expansion valve 8 → economizer 4 → compressor 1.

[0053] The refrigeration cycle of the dual heat pump unit is:

[0054] Compressor 1 exhaust → four-way valve 2 → fin heat exchanger 6 → economizer 4 → main electronic expansion valve 5 → shell and tube heat exchanger 3 → four-way valve 2 → gas-liquid separator 7 → compressor 1.

[0055] Air replenishment and enthalpy increase part: part of the refrigerant in economizer 4 → auxiliary electronic expansion valve 8 → economizer 4 → compressor 1.

[0056] The heat pump unit startup method provided by the embodiment of the present invention comprises the following steps:

[0057] Step 101: In response to a heat pump unit startup instruction, determine the ambient temperature of a target area.

[0058] In this embodiment, when the combined heat pump unit receives a heat pump unit startup instruction, the combined heat pump unit responds to the heat pump unit startup instruction and executes the startup process. The heat pump unit startup instruction can be issued by the user when the combined heat pump unit needs to be started. For example, when the combined heat pump unit is started for the first time, the user needs to control the combined heat pump unit to start. The heat pump unit startup instruction can also be generated autonomously by the combined heat pump unit. For example, the combined heat pump unit automatically detects the ambient temperature of the target area and determines whether to start based on the ambient temperature of the target area. For example, the target ambient temperature that needs to be adjusted to the target area is 25°, and the temperature hysteresis is 5°. After the combined heat pump unit is started for the first time, it adjusts the ambient temperature of the target area to 25° and then enters the shutdown state. When it is subsequently detected that the ambient temperature of the target area has dropped to 20°, the combined heat pump unit autonomously generates a heat pump unit startup instruction and responds to execute the startup process.

[0059] When executing the startup process, the dual-energy heat pump unit will first determine the ambient temperature of the target area. It can be understood that in this embodiment, the dual-energy heat pump unit includes a temperature sensor, which is arranged in the target area to detect the ambient temperature of the target area.

[0060] Step 102: Determine a first duration of the first startup phase, and determine a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase according to the ambient temperature.

[0061] After determining the ambient temperature of the target area, the combined heat pump unit needs to determine the first duration of the first startup phase and, based on the ambient temperature, the first target frequency that the compressor needs to reach at the end of the first startup phase. The first startup phase is the initial startup phase of the combined heat pump unit. During the first startup phase, the combined heat pump unit will attempt to establish a working fluid cycle, absorbing heat from the low-temperature side, compressing it through the compressor, and releasing heat on the high-temperature side. Because the combined heat pump unit has just entered the operating state from a static state, energy consumption during this phase may be relatively high, and the heating or cooling effect of the unit may not yet reach optimal state.

[0062] In one embodiment, the first duration of the first startup phase is a preset duration. For example, in this embodiment, the first duration can be set to 3 minutes or 5 minutes, etc., which can be set according to actual needs and is not specifically limited in this embodiment. The first target frequency that the compressor needs to reach at the end of the first startup phase can be determined based on the ambient temperature to determine the terminal load of the dual-energy heat pump unit, and the first target frequency can be determined based on the terminal load. Alternatively, the target frequency corresponding to the range of different ambient temperatures can be pre-set, and the dual-energy heat pump unit determines the corresponding first target frequency based on the range corresponding to the current ambient temperature. In one embodiment, the first target frequency that the compressor needs to reach at the end of the first startup phase of the heat pump unit is determined based on the ambient temperature in step 102, including:

[0063] Step 1021: When the ambient temperature is lower than a temperature threshold, determine a first preset frequency as a first target frequency that the compressor needs to reach.

[0064] Step 1022: When the ambient temperature is greater than or equal to the temperature threshold, determine that the second preset frequency is the first target frequency that the compressor needs to reach, and the second preset frequency is greater than the first preset frequency.

[0065] In one embodiment, when the ambient temperature is less than the temperature threshold, the dual heat pump unit determines the first preset frequency as the first target frequency that the compressor needs to reach. When the ambient temperature is greater than or equal to the temperature threshold, the second preset frequency is determined as the first target frequency that the compressor needs to reach. It can be understood that the second preset frequency is greater than the first preset frequency. The temperature threshold, the first preset frequency and the second preset frequency need to be pre-set according to different models of dual heat pump units. For example, for a dual heat pump unit with a heating capacity of 18KW, the compressor displacement is 420 (cm 3 / rev), the first preset frequency can be set to 40Hz; for a two-way heat pump unit with a heating capacity of 18KW, the compressor displacement is 310 (cm 3 / rev), the first preset frequency can be set to 60Hz.

[0066] For example, assuming the ambient temperature range for the combined heat pump system is -30°C to 40°C, the temperature threshold can be set to 0°C, the first preset frequency to 30Hz, and the second preset frequency to 40Hz. That is, when the ambient temperature is less than 0°C, the first target frequency that the compressor in the combined heat pump system needs to reach is 30Hz. When the ambient temperature is greater than or equal to 0°C, the second preset frequency that the compressor in the combined heat pump system needs to reach is 40Hz.

[0067] Step 103: Control the heat pump unit to start and enter a first startup phase, and control the frequency of the compressor to reach a first target frequency within a first duration of the first startup phase.

[0068] After determining the duration of the first startup phase and the first target frequency that the compressor needs to reach, the dual-energy heat pump unit starts and enters the first startup phase. During the first duration of the first startup phase, the compressor frequency is controlled to reach the first target frequency. The frequency increase rate during the first startup phase can be set to 1 Hz / s or 2 Hz / s, which is not specifically limited in this embodiment.

[0069] Step 104: After the first startup phase is completed, the heat pump unit is controlled to enter the second startup phase, and the current oil temperature of the heat pump unit is detected.

[0070] After the first startup phase, the CHP system enters the second startup phase, which is the initial operational phase of the CHP system. During this phase, the CHP system gradually adjusts its operating parameters, such as compressor frequency and fluid flow rate, to achieve more efficient operation. During this phase, the heating or cooling efficiency of the CHP system gradually increases. In this embodiment, after the first startup phase, the CHP system determines the current compressor oil temperature, which can be obtained using a temperature sensor installed in the compressor.

[0071] Step 105: Determine a second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, the ambient temperature, and the oil temperature.

[0072] After entering the second startup phase, the dual-energy heat pump unit needs to further control the frequency of the compressor to reach a stable state. Specifically, the dual-energy heat pump unit needs to determine the second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, ambient temperature and oil temperature. Exemplarily, the dual-energy heat pump unit can determine the current terminal load based on the ambient temperature at startup, and select different calculation methods according to different terminal loads, and finally determine the second target frequency based on the selected calculation method, the first target frequency, ambient temperature and oil temperature and other parameters. In one embodiment, the second target frequency can be determined by the following steps:

[0073] Step 1051: When the ambient temperature is lower than the temperature threshold, determine the second target frequency that the compressor needs to reach at the end of the second startup phase according to the first target frequency, the ambient temperature, the oil temperature, and a first preset rule.

[0074] When the ambient temperature is less than the temperature threshold, the dual-energy heat pump unit needs to determine the second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, the ambient temperature, the oil temperature, and the first preset rule. The first preset rule is a pre-set calculation rule. In one embodiment, when the ambient temperature is less than the temperature threshold, the second target frequency is determined as follows:

[0075]

[0076] Among them, F is the second target frequency, F1 is the first target frequency, T oil is the oil temperature, T a is the ambient temperature.

[0077] For example, assuming that when the dual heat pump unit is started, the detected ambient temperature is -20°C, the temperature threshold is 0°C, and at the end of the first startup phase, the oil temperature is 0°C, then the second target frequency of the compressor is 33 Hz.

[0078] Step 1052: When the ambient temperature is greater than or equal to the temperature threshold, determine the second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, the oil temperature, and a second preset rule.

[0079] When the ambient temperature is greater than or equal to the temperature threshold, the dual-energy heat pump unit needs to determine the second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, the oil temperature, and the second preset rule. Similarly, the second preset rule is also a pre-set rule. In one embodiment, when the ambient temperature is greater than or equal to the temperature threshold, the second target frequency is determined as follows:

[0080]

[0081] Among them, F1 is the first target frequency, T oil For oil temperature.

[0082] Step 106: Determine a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration.

[0083] After determining the second target frequency that the compressor needs to reach at the end of the second startup phase, the dual-energy heat pump unit needs to further determine the second duration of the second startup phase. In one embodiment, determining the second duration of the second startup phase based on the first target frequency, the second target frequency, and the first duration includes:

[0084] Step 1061: Determine the ratio of the first target frequency to the second target frequency.

[0085] Step 1062: Determine the product of the first duration and the ratio to obtain a second duration of the second startup phase.

[0086] In this embodiment, it is necessary to first determine the ratio of the first target frequency to the second target frequency, and then determine the product of the first duration and the ratio to obtain the second duration of the second startup phase. The specific calculation formula is as follows:

[0087]

[0088] Wherein, t1 is the first duration, and t is the second duration.

[0089] Step 107 : During a second duration of the second startup phase, control the frequency of the compressor to increase from the first target frequency to the second target frequency.

[0090] After determining the second duration of the second startup phase, the dual heat pump unit needs to control the compressor frequency to increase from the first target frequency to the second target frequency within the second duration of the second startup phase. After the second startup phase ends, the compressor of the dual heat pump unit can operate stably at the second target frequency. In one embodiment, Figure 3 As shown, Figure 3 A schematic diagram of the principle of starting a dual-energy heat pump unit provided by an embodiment of the present invention.

[0091] As described above, an embodiment of the present invention provides a method for starting a heat pump unit. During the startup of the heat pump unit, the embodiment of the present invention determines the first target frequency that the compressor needs to reach in the first startup phase based on the ambient temperature at startup, and then determines the second target frequency that the compressor needs to reach after entering the second startup phase based on the ambient temperature, the oil temperature at the end of the first startup phase, and the first target frequency. The duration of the second startup phase can also be determined based on the first target frequency, the second target frequency, and the first duration of the first startup phase. The embodiment of the present invention associates the frequency that the compressor needs to reach and the duration of the second startup phase with the ambient temperature and the oil temperature during the startup process, so that the frequency and startup duration of the compressor during the startup process can adapt to different ambient temperatures and oil temperatures, thereby improving the stability of the heat pump unit during the startup process.

[0092] The embodiment of the present invention further provides a heat pump unit starting device, which is applicable to a heat pump unit, wherein the heat pump unit includes a compressor and is used to adjust the temperature of a target area. Figure 4 As shown, Figure 4 A schematic diagram of the structure of a heat pump unit starting device provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the heat pump unit starting device includes:

[0093] The instruction response module 201 is used to determine the ambient temperature of the target area in response to the heat pump unit start instruction;

[0094] A first frequency determination module 202 is configured to determine a first duration of the first startup phase and determine a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase based on the ambient temperature;

[0095] The first starting module 203 is used to control the heat pump unit to start and enter the first starting phase, and control the frequency of the compressor to reach a first target frequency within a first duration of the first starting phase;

[0096] The second starting module 204 is used to control the heat pump unit to enter the second starting phase after the first starting phase ends, and detect the current oil temperature of the heat pump unit;

[0097] A second frequency determination module 205 is configured to determine a second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, the ambient temperature, and the oil temperature;

[0098] a duration determination module 206, configured to determine a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration;

[0099] The frequency control module 207 is configured to control the frequency of the compressor to increase from the first target frequency to the second target frequency during a second duration of the second startup phase.

[0100] Among them, the first frequency determination module 202 is specifically used to determine the first preset frequency as the first target frequency that the compressor needs to reach when the ambient temperature is less than the temperature threshold; when the ambient temperature is greater than or equal to the temperature threshold, determine the second preset frequency as the first target frequency that the compressor needs to reach, and the second preset frequency is greater than the first preset frequency.

[0101] Among them, the second frequency determination module 205 is specifically used to determine the second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, ambient temperature, oil temperature and the first preset rule when the ambient temperature is lower than the temperature threshold; and to determine the second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, oil temperature and the second preset rule when the ambient temperature is greater than or equal to the temperature threshold.

[0102] When the ambient temperature is lower than the temperature threshold, the second target frequency is determined as follows:

[0103]

[0104] Among them, F is the second target frequency, F1 is the first target frequency, T oil is the oil temperature, T a is the ambient temperature.

[0105] When the ambient temperature is greater than or equal to the temperature threshold, the second target frequency is determined as follows:

[0106]

[0107] Among them, F1 is the first target frequency, T oil For oil temperature.

[0108] The duration determination module 206 includes:

[0109] a ratio calculation unit, configured to determine a ratio of a first target frequency to a second target frequency;

[0110] The duration determining unit is configured to determine the product of the first duration and the ratio to obtain a second duration of the second startup phase.

[0111] Among them, the first duration is a preset duration.

[0112] The heat pump unit starting device provided in the embodiment of the present invention is included in the heat pump unit and can be used to execute the heat pump unit starting method provided in the above embodiment, and has corresponding functions and beneficial effects.

[0113] It is worth noting that in the embodiment of the above-mentioned heat pump unit starting device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0114] This embodiment also provides a heat pump unit, such as Figure 5 As shown, Figure 5 A circuit schematic diagram of a heat pump unit provided in an embodiment of the present invention, wherein the heat pump unit 30 includes a processor 300 and a memory 301;

[0115] The memory 301 is used to store the computer program 302 and transmit the computer program 302 to the processor 300;

[0116] The processor 300 is configured to execute the steps in the above-mentioned embodiment of the method for starting a heat pump unit according to the instructions in the computer program 302 .

[0117] For example, computer program 302 may be divided into one or more modules / units, one or more of which are stored in memory 301 and executed by processor 300 to implement the present application. One or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of computer program 302 in heat pump unit 30.

[0118] The heat pump unit 30 may include, but is not limited to, a processor 300 and a memory 301. Those skilled in the art will appreciate that Figure 5 This is merely an example of the heat pump unit 30 and does not constitute a limitation on the heat pump unit 30 . The heat pump unit 30 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the heat pump unit 30 may also include input and output devices, network access devices, buses, etc.

[0119] The processor 300 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0120] The memory 301 may be an internal storage unit of the heat pump unit 30, such as a hard disk or memory of the heat pump unit 30. The memory 301 may also be an external storage device of the heat pump unit 30, such as a plug-in hard disk equipped on the heat pump unit 30, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Furthermore, the memory 301 may include both an internal storage unit of the heat pump unit 30 and an external storage device. The memory 301 is used to store computer programs and other programs and data required by the heat pump unit 30. The memory 301 may also be used to temporarily store data that has been output or is about to be output.

[0121] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0122] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0123] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0124] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0125] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes various media that can store computer programs, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0126] An embodiment of the present invention further provides a storage medium containing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to execute a heat pump unit startup method. The heat pump unit startup method is applicable to a heat pump unit, the heat pump unit including a compressor, and the heat pump unit is used to adjust the temperature of a target area. The heat pump unit startup method includes the following steps:

[0127] In response to a heat pump unit start-up instruction, determining an ambient temperature of a target area;

[0128] Determining a first duration of the first startup phase, and determining a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase based on the ambient temperature;

[0129] Controlling the heat pump unit to start and enter a first startup phase, and controlling the frequency of the compressor to reach a first target frequency within a first duration of the first startup phase;

[0130] After the first startup phase is completed, the heat pump unit is controlled to enter the second startup phase and the current oil temperature of the heat pump unit is detected;

[0131] determining a second target frequency that the compressor needs to reach at the end of the second startup phase based on the first target frequency, the ambient temperature, and the oil temperature;

[0132] Determining a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration;

[0133] During a second duration of the second startup phase, the frequency of the compressor is controlled to increase from the first target frequency to the second target frequency.

[0134] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the embodiments of the present invention are not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the embodiments of the present invention. Therefore, although the embodiments of the present invention are described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments. Without departing from the concept of the embodiments of the present invention, the embodiments of the present invention may also include more other equivalent embodiments, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.

Claims

1. A method for starting a heat pump unit, applicable to a heat pump unit comprising a compressor, wherein the heat pump unit is used to adjust the temperature of a target area, characterized in that: The following steps are involved: In response to a heat pump unit startup instruction, determining an ambient temperature of the target area; Determining a first duration of a first startup phase, and determining a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase based on the ambient temperature; Controlling the heat pump unit to start and enter the first startup phase, and controlling the frequency of the compressor to reach the first target frequency within a first duration of the first startup phase; After the first startup phase ends, controlling the heat pump unit to enter a second startup phase and detecting the current oil temperature of the heat pump unit; determining, based on the first target frequency, the ambient temperature, and the oil temperature, a second target frequency that the compressor needs to reach at the end of the second startup phase; determining a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration; During a second duration of the second startup phase, the frequency of the compressor is controlled to increase from the first target frequency to the second target frequency.

2. The heat pump unit startup method according to claim 1, characterized in that: The determining, based on the ambient temperature, a first target frequency that the compressor needs to reach at the end of the first startup phase of the heat pump unit includes: When the ambient temperature is lower than a temperature threshold, determining a first preset frequency as a first target frequency that the compressor needs to reach; When the ambient temperature is greater than or equal to the temperature threshold, a second preset frequency is determined as the first target frequency that the compressor needs to reach, and the second preset frequency is greater than the first preset frequency.

3. The heat pump unit startup method according to claim 1, characterized in that: The determining, based on the first target frequency, the ambient temperature, and the oil temperature, of a second target frequency that the compressor needs to reach at the end of the second startup phase includes: When the ambient temperature is lower than a temperature threshold, determining, based on the first target frequency, the ambient temperature, the oil temperature, and a first preset rule, a second target frequency that the compressor needs to reach at the end of the second startup phase; When the ambient temperature is greater than or equal to the temperature threshold, a second target frequency that the compressor needs to reach at the end of the second startup phase is determined according to the first target frequency, the oil temperature, and a second preset rule.

4. The heat pump unit startup method according to claim 3, characterized in that: When the ambient temperature is lower than the temperature threshold, the second target frequency is determined as follows: Wherein, F is the second target frequency, is the first target frequency, is the oil temperature, is the ambient temperature.

5. The heat pump unit startup method according to claim 3, characterized in that: When the ambient temperature is greater than or equal to the temperature threshold, the second target frequency is determined as follows: in, is the first target frequency, is the oil temperature.

6. The heat pump unit startup method according to claim 1, characterized in that: The determining, according to the first target frequency, the second target frequency, and the first duration, a second duration of the second startup phase includes: determining a ratio of the first target frequency to the second target frequency; A product of the first duration and the ratio is determined to obtain a second duration of the second startup phase.

7. The heat pump unit startup method according to claim 6, characterized in that: The first duration is a preset duration.

8. A heat pump unit starting device, applicable to a heat pump unit, wherein the heat pump unit includes a compressor and is used to adjust the temperature of a target area, characterized in that: The heat pump unit starting device comprises: An instruction response module, configured to determine the ambient temperature of the target area in response to a heat pump unit start-up instruction; a first frequency determination module, configured to determine a first duration of a first startup phase, and determine, based on the ambient temperature, a first target frequency that the compressor of the heat pump unit needs to reach at the end of the first startup phase; a first starting module, configured to control the heat pump unit to start up and enter the first starting phase, and control the frequency of the compressor to reach the first target frequency within a first duration of the first starting phase; a second starting module, configured to control the heat pump unit to enter a second starting phase after the first starting phase ends, and detect the current oil temperature of the heat pump unit; a second frequency determination module, configured to determine, based on the first target frequency, the ambient temperature, and the oil temperature, a second target frequency that the compressor needs to reach at the end of the second startup phase; a duration determining module, configured to determine a second duration of the second startup phase according to the first target frequency, the second target frequency, and the first duration; The frequency control module is configured to control the frequency of the compressor to increase from the first target frequency to the second target frequency during a second duration of the second startup phase.

9. A heat pump unit, characterized in that: The heat pump unit includes a processor and a memory; The memory is used to store a computer program and transmit the computer program to the processor; The processor is configured to execute the heat pump unit starting method according to any one of claims 1 to 7 according to instructions in the computer program.

10. A storage medium storing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to execute the heat pump unit starting method according to any one of claims 1 to 7.

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