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

Abstract

The embodiment of the invention discloses a heat pump unit starting method and device, a heat pump unit and a storage medium. In the starting process of the heat pump unit, a first target frequency needing to be reached by a compressor in a first starting stage is determined according to the environment temperature during starting; and then according to the environment temperature, the oil temperature at the end of the first starting stage and the first target frequency, the second target frequency which the compressor needs to reach after the compressor enters the second starting stage is determined, and 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. According to the embodiment of the invention, the frequency required by the compressor in the starting process and the duration of the second starting stage are associated with the environment temperature and the oil temperature, so that the frequency and the starting duration of the compressor in the starting process can adapt to different environment 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. The two-way heat pump unit is usually composed of a compressor, a finned heat exchanger, a shell and tube heat exchanger, and a water pump.

[0003] The startup status of the existing two-way heat pump unit is basically the same under different load conditions. However, when starting under different load conditions, the startup frequency and startup duration of the two-way heat pump unit cannot adapt to the requirements of the current ambient temperature and the oil temperature at the bottom of the compressor, resulting in the two-way heat pump unit being unable to operate stably during the startup process. 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 the combined heat pump unit cannot operate stably during the startup process.

[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, wherein the heat pump unit includes 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] Determine a first duration of a 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;

[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 the second startup phase, and detecting the current oil temperature of the heat pump unit;

[0010] Determining, according to 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] Wherein, determining, according to 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 less 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] Wherein, 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, according to 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, F 1 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] Among them, F 1 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] The 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, which is 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] A command response module, used for determining the ambient temperature of the target area in response to the heat pump unit startup command;

[0031] A first frequency determination module is used to determine a first duration of a 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;

[0032] A first starting module, used for controlling the heat pump unit to start and enter the first starting phase, and controlling 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, used for controlling the heat pump unit to enter a second starting stage after the first starting stage ends, and detecting the current oil temperature of the heat pump unit;

[0034] a second frequency determination module, configured to determine, according to 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 determination 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 used 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 used 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] The embodiment of the present invention provides a method and device for starting a heat pump unit, a heat pump unit and a storage medium. In the process of starting the heat pump unit, the embodiment of the present invention determines the first target frequency that the compressor needs to reach in the first starting stage according to the ambient temperature at the time of starting, and then determines the second target frequency that the compressor needs to reach after entering the second starting stage according to the ambient temperature, the oil temperature at the end of the first starting stage and the first target frequency, and can determine the duration of the second starting stage according to the first target frequency, the second target frequency and the first duration of the first starting stage. The embodiment of the present invention associates the frequency that the compressor needs to reach during the starting process and the duration of the second starting stage with the ambient temperature and the oil temperature, so that the frequency and starting duration of the compressor during the starting process can adapt to different ambient temperatures and oil temperatures, thereby improving the stability of the heat pump unit during the starting 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 A schematic 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-generation heat pump unit provided in an embodiment of the present invention.

[0045] Figure 4 A schematic structural diagram of a heat pump unit starting device provided in 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 fully illustrate the specific embodiments of the present application so that those skilled in the art can practice them. The examples represent possible variations only. Unless explicitly required, separate components and functions are optional, and the order of operation can vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. The scope of the embodiments of the present application includes the entire scope of the claims, and all available equivalents of the claims. In this article, each embodiment may be represented individually or generally by the term "invention", which is only for convenience, and if more than one invention is disclosed in fact, it is not intended to automatically limit the scope of the application to any single invention or inventive concept. In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, without requiring or implying any actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed. The various embodiments are described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. As for the structures, products, etc. disclosed in the embodiments, since they correspond to the parts disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0048] The startup status of the existing two-way heat pump unit under different load conditions is basically the same. However, when starting under different load conditions, the startup frequency and startup duration of the two-way heat pump unit need to adapt to the current ambient temperature and the oil temperature at the bottom of the compressor. For example, when starting at a lower ambient temperature, if the frequency is increased too quickly, the system will return liquid. Due to the compatibility of the refrigerant and the compressor oil, when the system returns liquid, the oil at the bottom of the compressor will be brought out, causing the compressor to lack oil, resulting in poor lubrication of the compressor, thereby affecting the normal operation of the two-way 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 The flowchart of a method for starting a heat pump unit provided in an embodiment of the present invention is a schematic diagram of a method for starting a heat pump unit provided in an embodiment of the present invention. The method for starting a heat pump unit provided in an embodiment of the present invention is applicable to a heat pump unit, the heat pump unit includes a compressor, and the heat pump unit is used to adjust the temperature of a target area, for example, the target area is a certain room, etc. In this embodiment, the heat pump unit is taken as an example of a two-generation heat pump unit. For example, Figure 2 As shown, Figure 2The schematic diagram of the structure of the combined heat pump unit provided in the embodiment of the present invention comprises: 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 combined 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 combined 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 CSG heat pump unit receives the heat pump unit start-up instruction, the CSG heat pump unit responds to the heat pump unit start-up instruction and executes the start-up process. The heat pump unit start-up instruction can be issued by the user when the CSG heat pump unit needs to be started. For example, when the CSG heat pump unit is started for the first time, the user needs to control the CSG heat pump unit to start. The heat pump unit start-up instruction can also be generated autonomously by the CSG heat pump unit. For example, the CSG heat pump unit automatically detects the ambient temperature of the target area and determines whether it needs to be started 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 first start-up, the CSG heat pump unit 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 drops to 20°, the CSG heat pump unit autonomously generates the heat pump unit start-up instruction and responds to execute the start-up process.

[0059] When executing the startup process, the combined heat pump unit will first determine the ambient temperature of the target area. It can be understood that in this embodiment, the combined heat pump unit includes a temperature sensor, and the temperature sensor 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 at the same time determine the first target frequency that the compressor needs to reach at the end of the first startup phase based on the ambient temperature. 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 try to establish a working fluid cycle, that is, absorb heat from the low-temperature side, then compress it through the compressor, and release heat on the high-temperature side. Since the combined heat pump unit has just entered the operating state from a stationary state, the energy consumption at this stage may be relatively high, and the heating or cooling effect of the unit may not have reached the 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. It can be set specifically 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 two-way heat pump unit, and the first target frequency is determined based on the terminal load. Alternatively, the target frequency corresponding to the interval range of different ambient temperatures can be pre-set, and the two-way heat pump unit determines the corresponding first target frequency based on the interval 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 less 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 two-way heat pump unit determines the first preset frequency as the first target frequency that the compressor needs to reach, and 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 two-way heat pump units. For example, for a two-way 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 18KW heating capacity dual heat pump unit, the compressor displacement is 310 (cm 3 / rev), the first preset frequency can be set to 60Hz.

[0066] For example, assuming that the ambient temperature range of the combined heat pump unit is (-30°C, 40°C), the temperature threshold can be set to 0°, the first preset frequency can be set to 30Hz, and the second preset frequency can be set to 40Hz. That is, when the ambient temperature is less than 0°, the first target frequency that the compressor in the combined heat pump unit needs to reach is 30Hz, and when the ambient temperature is greater than or equal to 0°, the second preset frequency that the compressor in the combined heat pump unit 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 frequency of the compressor is controlled to reach the first target frequency. The frequency increase rate in the first startup phase can be set as 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 heat pump unit needs to enter the second startup phase, where the second startup phase is the initial operation phase of the CHP heat pump unit. In the second startup phase, the CHP heat pump unit will gradually adjust its operating parameters, such as compressor frequency and working fluid flow, to achieve a more efficient operating state. In the second startup phase, the heating or cooling effect of the CHP heat pump unit will gradually increase. In this embodiment, after the first startup phase, the CHP heat pump unit will determine the current oil temperature of the compressor, where the oil temperature can be collected by a temperature sensor provided in the compressor.

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

[0072] After entering the second startup phase, the two-way heat pump unit needs to further control the frequency of the compressor to reach a stable state. Specifically, the two-way 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 two-way 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, 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 less 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 the first preset rule.

[0074] When the ambient temperature is less than the temperature threshold, the dual-generation 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, 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] Where F is the second target frequency, F 1 is the first target frequency, T oil is the oil temperature, T a is the ambient temperature.

[0077] For example, assuming that when the combined heat pump unit is started, the detected ambient temperature is -20°C, the temperature threshold is 0°, and when the first startup phase ends, 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 according to the first target frequency, the oil temperature and the second preset rule.

[0079] When the ambient temperature is greater than or equal to the temperature threshold, the combined 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, F 1 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 the combined heat pump unit determines the second target frequency that the compressor needs to reach at the end of the second startup phase, it is necessary to further determine the second duration of the second startup phase. In one embodiment, the second duration of the second startup phase is determined based on the first target frequency, the second target frequency, and the first duration, including:

[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] Among them, t 1 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 combined heat pump unit needs to control the frequency of the compressor 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 is over, the compressor of the combined 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-generation heat pump unit provided in 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. In the process of starting the heat pump unit, the embodiment of the present invention determines the first target frequency that the compressor needs to reach in the first starting stage according to the ambient temperature at the time of starting, and then determines the second target frequency that the compressor needs to reach after entering the second starting stage according to the ambient temperature, the oil temperature at the end of the first starting stage, and the first target frequency, and can determine the duration of the second starting stage according to the first target frequency, the second target frequency, and the first duration of the first starting stage. The embodiment of the present invention associates the frequency that the compressor needs to reach during the starting process and the duration of the second starting stage with the ambient temperature and the oil temperature, so that the frequency and starting duration of the compressor during the starting process can adapt to different ambient temperatures and oil temperatures, thereby improving the stability of the heat pump unit during the starting 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 the heat pump unit 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 command response module 201 is used to determine the ambient temperature of the target area in response to the heat pump unit startup command;

[0094] The first frequency determination module 202 is used 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 according to 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 stage after the first starting stage ends, and detect the current oil temperature of the heat pump unit;

[0097] A second frequency determination module 205 is used to determine a 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 and the oil temperature;

[0098] The duration determination module 206 is used to determine the 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 used to control the frequency of the compressor to increase from the first target frequency to the second target frequency during the 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 according to 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 according to 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] Wherein, when the ambient temperature is less than the temperature threshold, the second target frequency is determined as follows:

[0103]

[0104] Where F is the second target frequency, F 1 is the first target frequency, T oil is the oil temperature, T a is the ambient temperature.

[0105] Wherein, 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, F 1 is the first target frequency, T oil For oil temperature.

[0108] The duration determination module 206 includes:

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

[0110] The duration determination unit is used 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 above-mentioned embodiment of the 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 used 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] Exemplarily, the computer program 302 may be divided into one or more modules / units, one or more modules / units are stored in the memory 301, and are executed by the processor 300 to complete the present application. One or more modules / units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 302 in the 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 It is only an example of the heat pump unit 30 and does not constitute a limitation of the heat pump unit 30. It 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), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or 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, etc.

[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, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the heat pump unit 30. Further, the memory 301 may also include both an internal storage unit and an external storage device of the heat pump unit 30. 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 to be output.

[0121] Those skilled in the art can 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 the present 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 only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, 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 interfaces, devices or units, which can be electrical, mechanical or other forms.

[0123] 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 on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0124] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of 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, in essence, 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, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store computer programs.

[0126] The embodiment of the present invention further provides a storage medium including computer executable instructions. When the computer executable instructions are executed by a computer processor, they 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 includes a compressor. 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] 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;

[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 according to 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 protection scope 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, and may include more other equivalent embodiments without departing from the concept of the embodiments of the present invention, 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, wherein the heat pump unit comprises a compressor, and 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; Determine a first duration of a 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; 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 the second startup phase, and detecting the current oil temperature of the heat pump unit; Determining, according to 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 step of determining, according to 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 comprises: When the ambient temperature is less 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 the temperature threshold, determining, according to 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 less than the temperature threshold, the second target frequency is determined as follows: 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.

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: Wherein, F1 is the first target frequency, T oil 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; The 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 comprises a compressor, and the heat pump unit is used to adjust the temperature of a target area, characterized in that: The heat pump unit starting device comprises: A command response module, used for determining the ambient temperature of the target area in response to the heat pump unit startup command; A first frequency determination module is used to determine a first duration of a 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; A first starting module, used for controlling the heat pump unit to start and enter the first starting phase, and controlling the frequency of the compressor to reach the first target frequency within a first duration of the first starting phase; A second starting module, used for controlling the heat pump unit to enter a second starting stage after the first starting stage ends, and detecting the current oil temperature of the heat pump unit; a second frequency determination module, configured to determine, according to 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 determination 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 used 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 used to execute the heat pump unit starting method according to any one of claims 1 to 7 according to the instructions in the computer program.

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

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