Determination method and device of defrosting mode, electronic equipment and storage medium

Abstract

The invention provides a defrosting mode determining method and device, electronic equipment and a storage medium, and relates to the technical field of air conditioners. Comprising the steps of obtaining indoor environment temperature and outdoor environment temperature; under the condition that the indoor environment temperature and the outdoor environment temperature meet preset conditions, the current operation frequency of the air conditioner and the measured opening degree of an expansion valve are obtained; according to the operation frequency and the outdoor environment temperature, the reference opening degree of the expansion valve is determined; and according to the relation between the difference value between the measured opening degree and the reference opening degree and a first threshold value, the defrosting mode is determined. Therefore, when the air conditioner needs to be defrosted, the fluorine deficiency degree can be determined according to the difference value between the reference opening degree and the measured opening degree of the expansion valve, and then the defrosting mode of the air conditioner is determined according to the fluorine deficiency degree, so that the air conditioner can select the proper defrosting mode for defrosting, and the defrosting reliability is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning, and in particular to a method, device, electronic device and storage medium for determining a defrost mode. Background Art

[0002] With the development of the times and the advancement of technology, people have higher and higher requirements for home appliances. In order to improve the comfort of air-conditioning products under low-temperature heating conditions, some air-conditioning products use hot gas defrosting.

[0003] Compared with conventional defrosting, the refrigerant flow direction of hot gas defrosting does not change during defrosting. The high-temperature refrigerant first enters the indoor unit (the indoor fan stops to reduce heat dissipation) and then enters the outdoor unit for defrosting. Therefore, the temperature of the indoor unit heat exchanger is higher and does not absorb heat from the room, so the heating comfort is better. However, since the high-temperature refrigerant enters the indoor unit first, there will still be a certain amount of heat loss, which will lead to less defrosting heat, especially when the system lacks fluorine, the refrigerant circulation volume is insufficient, and the heat carried is limited, which seriously affects the reliability of hot gas defrosting. Summary of the invention

[0004] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0005] The first embodiment of the present disclosure provides a method for determining a defrost mode, comprising:

[0006] Get indoor ambient temperature and outdoor ambient temperature;

[0007] When the indoor ambient temperature and the outdoor ambient temperature meet preset conditions, obtaining the current operating frequency of the air conditioner and the measured opening degree of the expansion valve;

[0008] Determining a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature;

[0009] The defrost mode is determined according to the relationship between the difference between the measured opening and the reference opening and a first threshold.

[0010] A second aspect of the present disclosure provides a device for determining a defrost mode, comprising:

[0011] The first acquisition module is used to acquire the indoor ambient temperature and the outdoor ambient temperature;

[0012] A second acquisition module is used to acquire the current operating frequency of the air conditioner and the measured opening degree of the expansion valve when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions;

[0013] A first determining module, configured to determine a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature;

[0014] The second determination module is used to determine the defrost mode according to the relationship between the difference between the measured opening and the reference opening and a first threshold.

[0015] The third aspect embodiment of the present disclosure proposes an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for determining the defrost mode proposed in the first aspect embodiment of the present disclosure is implemented.

[0016] The fourth aspect embodiment of the present disclosure proposes a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the method for determining the defrost mode proposed in the first aspect embodiment of the present disclosure is implemented.

[0017] The defrost mode determination method, device, electronic device and storage medium provided by the present disclosure have the following beneficial effects:

[0018] In the disclosed embodiment, the indoor ambient temperature and the outdoor ambient temperature can be obtained first, and then when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions, the current operating frequency of the air conditioner and the measured opening of the expansion valve are obtained, and then the reference opening of the expansion valve is determined according to the operating frequency and the outdoor ambient temperature, and finally the defrost mode is determined according to the relationship between the difference between the measured opening and the reference opening and the first threshold value. Therefore, when the air conditioner needs to be defrosted, the degree of fluorine deficiency can be determined according to the difference between the reference opening and the measured opening of the expansion valve, and then the defrost mode of the air conditioner can be determined according to the degree of fluorine deficiency, so that the air conditioner can select a suitable defrost mode for defrosting, thereby improving the reliability of defrosting.

[0019] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A schematic flow chart of a method for determining a defrost mode provided by an embodiment of the present disclosure;

[0022] Figure 2 A schematic flow chart of a method for determining a defrost mode provided by another embodiment of the present disclosure;

[0023] Figure 3 A schematic flow chart of a method for determining a defrost mode provided by another embodiment of the present disclosure;

[0024] Figure 4 A schematic diagram of the structure of a device for determining a defrost mode provided by an embodiment of the present disclosure;

[0025] Figure 5 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0027] The following describes a method, device, electronic device, and storage medium for determining a defrost mode according to an embodiment of the present disclosure with reference to the accompanying drawings.

[0028] Figure 1 A schematic flow chart of a method for determining a defrost mode provided in an embodiment of the present disclosure.

[0029] The embodiment of the present disclosure takes the method for determining the defrost mode as an example in which the method is configured in a device for determining the defrost mode. The device for determining the defrost mode can be applied to any electronic device so that the electronic device can perform the function of determining the defrost mode.

[0030] like Figure 1 As shown, the method for determining the defrost mode may include the following steps:

[0031] Step 101, obtaining the indoor ambient temperature and the outdoor ambient temperature.

[0032] Optionally, the indoor ambient temperature and the outdoor ambient temperature may be obtained when the air conditioner meets the defrosting condition.

[0033] Optionally, when the pipe temperature of the outdoor heat exchanger is less than a preset threshold, it is determined that the air conditioner meets the defrosting condition. That is, when the pipe temperature of the outdoor heat exchanger is less than the preset threshold, frost or ice will form on the surface of the outdoor heat exchanger, and defrosting is required.

[0034] Alternatively, the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger may be acquired first, and then the indoor ambient temperature may be acquired when the difference between the pipe temperature and the outdoor ambient temperature is greater than a second threshold.

[0035] That is, it is possible to determine whether the air conditioner meets the defrosting condition according to the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger. If the difference between the outdoor ambient temperature and the pipe temperature is greater than the fifth threshold, it is determined that the air conditioner meets the defrosting condition, and then the indoor ambient temperature is obtained.

[0036] The fifth threshold value may be 5 degrees Celsius (°C), 6°C, etc., which is not limited in the present disclosure.

[0037] Step 102, when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions, obtain the current operating frequency of the air conditioner and the measured opening of the expansion valve.

[0038] After obtaining the indoor ambient temperature and the outdoor ambient temperature, it can be further determined whether the indoor ambient temperature and the outdoor ambient temperature meet a preset condition, wherein the preset condition can be a temperature condition corresponding to hot gas defrosting.

[0039] Optionally, when the outdoor ambient temperature is less than a second threshold and the indoor ambient temperature is greater than a third threshold, it is determined that the indoor ambient temperature and the outdoor ambient temperature meet a preset condition.

[0040] Alternatively, when the outdoor ambient temperature is greater than or equal to the second threshold, and the indoor ambient temperature is greater than a fourth threshold, it is determined that the indoor ambient temperature and the outdoor ambient temperature meet the preset condition.

[0041] Among them, the third threshold is greater than the fourth threshold; the fourth threshold is greater than the second threshold.

[0042] The second threshold may be -5°C, -6°C, etc. The third threshold may be 15°C, 20°C, etc. The fourth threshold may be 10°C, 12°C, etc. The present disclosure does not specifically limit the values ​​of the first threshold, the second threshold and the third threshold.

[0043] The current operating frequency of the air conditioner is the operating frequency before entering the defrosting mode. The measured opening of the expansion valve is the opening measured when the air conditioner is in operation before entering the defrosting mode.

[0044] Step 103, determining a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature.

[0045] The reference opening may be a theoretical optimal opening of the expansion valve corresponding to the current operating frequency and outdoor ambient temperature.

[0046] Optionally, the reference opening degree of the expansion valve may be determined according to a mapping relationship between the operating frequency and the outdoor ambient temperature and the reference opening degree.

[0047] That is, the optimal opening of the expansion valve under the same outdoor ambient temperature and different operating frequencies can be determined in a laboratory environment, and then the optimal opening of the expansion valve under the same operating frequency and different outdoor ambient temperatures can be determined, and then the optimal opening mapping table can be obtained. When the air conditioner is running, the optimal opening mapping table can be queried according to the real-time operating frequency and outdoor ambient temperature to obtain the reference opening of the expansion valve under the current operating conditions.

[0048] Step 104 : determining a defrost mode according to a relationship between a difference between the measured opening and the reference opening and a first threshold value.

[0049] It should be noted that in terms of air conditioning control, a theoretical optimal opening (i.e. reference opening) will be set corresponding to the outdoor ambient temperature and operating frequency. After the operation enters the closed-loop stage, the opening will be adjusted in real time according to the deviation between the exhaust and the target exhaust. When the system refrigerant is too little, the exhaust temperature is prone to overshoot and be too high. The air conditioning system will actively increase the opening and increase the system circulation flow, so that the exhaust is reduced and eventually approaches or reaches the target exhaust.

[0050] Therefore, the degree of fluorine deficiency can be judged by comparing the difference between the measured opening at the time of entering the defrost and the reference opening corresponding to the time of entering the defrost. Different degrees of fluorine deficiency have different effects on hot gas defrosting. The greater the difference between the measured opening and the reference opening, the more serious the fluorine deficiency. The more serious the fluorine deficiency, the more likely it is that the defrosting will not be clean when using the hot gas defrost mode.

[0051] Optionally, when the difference is smaller than a first threshold, the defrost mode is determined to be hot gas defrost.

[0052] When the difference is less than the first threshold, it means that the air conditioner is slightly short of fluorine or not short of fluorine, and the impact on hot air defrosting is small, and hot air defrosting can be used to defrost cleanly. Therefore, the defrost mode is determined to be hot air defrosting, so as to ensure the use comfort under low temperature heating conditions.

[0053] The first threshold may be 100p, 90p, etc. This disclosure does not limit this.

[0054] Alternatively, when the difference is greater than or equal to the first threshold, the defrost mode is determined to be the reverse cycle defrost.

[0055] When the difference is greater than or equal to the first threshold, it indicates that the air conditioner is seriously defrosted, which has a greater impact on hot air defrosting. Hot air defrosting is not clean, affecting the user experience. Therefore, the defrosting mode is determined to be reverse cycle defrosting to avoid unclean defrosting.

[0056] In the disclosed embodiment, the indoor ambient temperature and the outdoor ambient temperature can be obtained first, and then when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions, the current operating frequency of the air conditioner and the measured opening of the expansion valve are obtained, and then the reference opening of the expansion valve is determined according to the operating frequency and the outdoor ambient temperature, and finally the defrost mode is determined according to the relationship between the difference between the measured opening and the reference opening and the first threshold value. Therefore, when the air conditioner needs to be defrosted, the degree of fluorine deficiency can be determined according to the difference between the reference opening and the measured opening of the expansion valve, and then the defrost mode of the air conditioner can be determined according to the degree of fluorine deficiency, so that the air conditioner can select a suitable defrost mode for defrosting, thereby improving the reliability of defrosting.

[0057] Figure 2 A flow chart of a method for determining a defrost mode provided by an embodiment of the present disclosure is shown as follows: Figure 2 As shown, the method for determining the defrost mode may include the following steps:

[0058] Step 201, obtaining the indoor ambient temperature and the outdoor ambient temperature.

[0059] Step 202, when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions, obtain the current operating frequency of the air conditioner and the measured opening of the expansion valve.

[0060] The specific implementation forms of step 201 and step 202 can refer to the detailed descriptions in other disclosed embodiments, and will not be described in detail here.

[0061] Optionally, when the indoor ambient temperature and the outdoor ambient temperature do not meet preset conditions, the defrost mode is determined to be reverse cycle defrost.

[0062] It is understandable that when the indoor ambient temperature and the outdoor ambient temperature do not meet the preset conditions, it means that the current operating environment of the air conditioner is not suitable for hot gas defrosting, so the defrost mode is determined to be reverse cycle defrosting.

[0063] Step 203, obtaining the lower limit and upper limit of the operating frequency of the air conditioner, the first opening of the expansion valve when the air conditioner operates at the lower limit of the operating frequency, and the second opening of the expansion valve when the air conditioner operates at the upper limit of the operating frequency.

[0064] The lower limit of the operating frequency may be the rated minimum operating frequency of the air conditioner, and the upper limit of the operating frequency may be the rated maximum operating frequency of the air conditioner.

[0065] The first opening degree may be an optimal opening degree of the expansion valve in order to ensure the performance of the air conditioner when the air conditioner is operating at the lower limit of the operating frequency.

[0066] The first opening degree may be an optimal opening degree of the expansion valve when the air conditioner is operated at an upper limit of the operating frequency in order to ensure the performance of the air conditioner.

[0067] Step 204, determining a correction coefficient according to the outdoor ambient temperature.

[0068] Optionally, the outdoor ambient temperature is positively correlated with the correction coefficient, that is, the higher the outdoor ambient temperature, the greater the correction coefficient.

[0069] Step 205, determining a reference opening according to the lower limit of the operating frequency, the upper limit of the operating frequency, the first opening, the second opening, the correction coefficient and the current operating frequency.

[0070] Among them, the formula for determining the reference opening can be shown as follows:

[0071]

[0072] Among them, P 0 is the reference opening, F 0 is the current operating frequency, F 1 is the lower limit of the operating frequency, F 2 is the upper limit of the operating frequency, P 1 is the first opening, P 2 is the second opening, k is the correction coefficient, and the value of k can be [0,100].

[0073] Step 206 , determining the defrost mode according to the relationship between the difference between the measured opening and the reference opening and the first threshold.

[0074] In the disclosed embodiment, the indoor ambient temperature and the outdoor ambient temperature can be obtained first, and then when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions, the current operating frequency of the air conditioner and the measured opening of the expansion valve are obtained, and the lower limit and upper limit of the operating frequency of the air conditioner are obtained. When the air conditioner operates at the lower limit of the operating frequency, the first opening of the expansion valve, when the air conditioner operates at the upper limit of the operating frequency, the second opening of the expansion valve, and the correction coefficient is determined according to the outdoor ambient temperature, and then the reference opening is determined according to the lower limit of the operating frequency, the upper limit of the operating frequency, the first opening, the second opening, the correction coefficient and the current operating frequency, and finally the defrost mode is determined according to the relationship between the difference between the measured opening and the reference opening and the first threshold value. In this way, the reference opening of the expansion valve under the current operating frequency and the outdoor ambient temperature can be accurately determined, and then the degree of fluorine deficiency can be accurately determined based on the reference opening of the expansion valve, thereby improving the accuracy of the determined defrost mode.

[0075] Figure 3 A flow chart of a method for determining a defrost mode provided by an embodiment of the present disclosure; Figure 3As shown, the method for determining the defrost mode may include the following steps:

[0076] Step 301, obtaining the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger.

[0077] Step 302: When the difference between the outdoor ambient temperature and the pipeline temperature is greater than a second threshold, the indoor ambient temperature is obtained.

[0078] Step 303, determine whether the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions; if the preset conditions are met, execute step 304; if not, execute step 308.

[0079] Step 304, obtaining the current operating frequency of the air conditioner and the measured opening of the expansion valve.

[0080] Step 305: Determine a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature.

[0081] Step 306, determine whether the difference between the measured opening and the reference opening is less than a first threshold; if the difference is less than the first threshold, execute step 307; if the difference is not less than the first threshold, execute step 308.

[0082] Step 307, determining that the defrost mode is hot gas defrost.

[0083] Step 308, determining that the defrost mode is reverse cycle defrost.

[0084] In order to implement the above embodiment, the present disclosure also proposes a device for determining a defrost mode.

[0085] Figure 4 A schematic diagram of the structure of a device for determining a defrost mode provided in an embodiment of the present disclosure.

[0086] like Figure 4 As shown, the defrost mode determination device 400 may include:

[0087] The first acquisition module 401 is used to acquire the indoor ambient temperature and the outdoor ambient temperature;

[0088] The second acquisition module 402 is used to acquire the current operating frequency of the air conditioner and the measured opening degree of the expansion valve when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions;

[0089] A first determination module 403 is used to determine a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature;

[0090] The second determination module 404 is configured to determine the defrost mode according to the relationship between the difference between the measured opening and the reference opening and the first threshold.

[0091] Optionally, the second determining module 404 is configured to:

[0092] When the difference is less than the first threshold, the defrosting mode is determined to be hot gas defrosting; or,

[0093] When the difference is greater than or equal to the first threshold, it is determined that the defrost mode is the reverse cycle defrost.

[0094] Optionally, the first determining module 403 is configured to:

[0095] Obtaining a lower limit and an upper limit of the operating frequency of the air conditioner, a first opening degree of the expansion valve when the air conditioner operates at the lower limit of the operating frequency, and a second opening degree of the expansion valve when the air conditioner operates at the upper limit of the operating frequency;

[0096] Determine the correction factor according to the outdoor ambient temperature;

[0097] The reference opening is determined according to the lower limit of the operating frequency, the upper limit of the operating frequency, the first opening, the second opening, the correction coefficient and the current operating frequency.

[0098] Optionally, the method further includes a third determining module, configured to:

[0099] When the outdoor ambient temperature is less than the second threshold value and the indoor ambient temperature is greater than the third threshold value, it is determined that the indoor ambient temperature and the outdoor ambient temperature meet the preset condition; or,

[0100] When the outdoor ambient temperature is greater than or equal to the second threshold, and the indoor ambient temperature is greater than the fourth threshold, determining that the indoor ambient temperature and the outdoor ambient temperature meet a preset condition;

[0101] Among them, the third threshold is greater than the fourth threshold; the fourth threshold is greater than the second threshold.

[0102] Optionally, the method further includes a fourth determining module, configured to:

[0103] When the indoor ambient temperature and the outdoor ambient temperature do not meet the preset conditions, the defrost mode is determined to be the reverse cycle defrost.

[0104] Optionally, the first acquisition module 401 is used to:

[0105] Obtain the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger;

[0106] When the difference between the pipeline temperature and the outdoor ambient temperature is greater than a fifth threshold, the indoor ambient temperature is acquired.

[0107] The functions and specific implementation principles of the above modules in the embodiments of the present disclosure can be referred to the above method embodiments, and will not be repeated here.

[0108] The device for determining the defrost mode of the disclosed embodiment can first obtain the indoor ambient temperature and the outdoor ambient temperature, and then obtain the current operating frequency of the air conditioner and the measured opening of the expansion valve when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions, and then determine the reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature, and finally determine the defrost mode according to the relationship between the difference between the measured opening and the reference opening and the first threshold. Therefore, when the air conditioner needs to be defrosted, the degree of fluorine deficiency can be determined according to the difference between the reference opening and the measured opening of the expansion valve, and then the defrost mode of the air conditioner can be determined according to the degree of fluorine deficiency, so that the air conditioner can select a suitable defrost mode for defrosting, thereby improving the reliability of defrosting.

[0109] In order to implement the above embodiments, the present disclosure further proposes an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for determining the defrost mode proposed in the above embodiments of the present disclosure is implemented.

[0110] In order to implement the above embodiments, the present disclosure further proposes a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the method for determining the defrost mode proposed in the above embodiments of the present disclosure is implemented.

[0111] Figure 5 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. Figure 5 The electronic device 12 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0112] like Figure 5 As shown, the electronic device 12 is in the form of a general purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that connects various system components (including the system memory 28 and the processing unit 16).

[0113] The bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus and Peripheral Component Interconnection (PCI) bus.

[0114] The electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0115] The memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 5 not shown, usually called a "hard drive"). Although Figure 5 Not shown in the figure, a disk drive for reading and writing a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing a removable non-volatile optical disk (e.g., a compact disc read only memory (CD-ROM), a digital versatile disc read only memory (DVD-ROM), or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the various embodiments of the present disclosure.

[0116] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in the memory 28, such program modules 42 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 42 generally perform the functions and / or methods of the embodiments described in the present disclosure.

[0117] The electronic device 12 may also communicate with one or more external devices 14 (e.g., keyboards, pointing devices, displays 24, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 12, and / or may communicate with any device that enables the electronic device 12 to communicate with one or more other computing devices (e.g., network cards, modems, etc.). Such communication may be performed via an input / output (I / O) interface 22. Furthermore, the electronic device 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 via a bus 18. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0118] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, such as implementing the methods mentioned in the above embodiments.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0120] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0121] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present disclosure belong.

[0122] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0123] It should be understood that the various parts of the present disclosure can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0124] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0125] In addition, each functional unit in each embodiment of the present disclosure may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0126] The storage medium mentioned above may be a read-only memory, a disk or an optical disk, etc. Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present disclosure. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present disclosure.

Claims

1. A method for determining a defrost mode, characterized in that: include: Get indoor ambient temperature and outdoor ambient temperature; When the indoor ambient temperature and the outdoor ambient temperature meet preset conditions, obtaining the current operating frequency of the air conditioner and the measured opening of the expansion valve; Determining a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature; The defrost mode is determined according to the relationship between the difference between the measured opening degree and the reference opening degree and a first threshold.

2. The method according to claim 1, characterized in that The step of determining the defrost mode according to a relationship between a difference between the measured opening and the reference opening and a first threshold value comprises: When the difference is less than the first threshold, determining that the defrost mode is hot gas defrost; or, When the difference is greater than or equal to the first threshold, it is determined that the defrost mode is reverse cycle defrost.

3. The method according to claim 1, characterized in that The step of determining a reference opening degree of the expansion valve comprises: Acquire a lower limit and an upper limit of an operating frequency of the air conditioner, a first opening degree of the expansion valve when the air conditioner operates at the lower limit of the operating frequency, and a second opening degree of the expansion valve when the air conditioner operates at the upper limit of the operating frequency; Determining a correction factor according to the outdoor ambient temperature; The reference opening is determined according to the operating frequency lower limit, the operating frequency upper limit, the first opening, the second opening, the correction coefficient and the current operating frequency.

4. The method according to claim 1, characterized in that: Also includes: When the outdoor ambient temperature is less than a second threshold value and the indoor ambient temperature is greater than a third threshold value, determining that the indoor ambient temperature and the outdoor ambient temperature meet the preset condition; or, When the outdoor ambient temperature is greater than or equal to a second threshold, and the indoor ambient temperature is greater than a fourth threshold, determining that the indoor ambient temperature and the outdoor ambient temperature meet the preset condition; Among them, the third threshold is greater than the fourth threshold; the fourth threshold is greater than the second threshold.

5. The method according to claim 4, characterized in that After obtaining the indoor environment temperature and the outdoor environment temperature, the method further includes: When the indoor ambient temperature and the outdoor ambient temperature do not meet the preset conditions, the defrost mode is determined to be reverse cycle defrost.

6. The method according to any one of claims 1 to 5, characterized in that: The obtaining of the indoor environment temperature and the outdoor environment temperature includes: Obtaining the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger; When the difference between the pipeline temperature and the outdoor ambient temperature is greater than a fifth threshold, the indoor ambient temperature is acquired.

7. A device for determining a defrost mode, characterized in that: include: The first acquisition module is used to acquire the indoor ambient temperature and the outdoor ambient temperature; A second acquisition module is used to acquire the current operating frequency of the air conditioner and the measured opening degree of the expansion valve when the indoor ambient temperature and the outdoor ambient temperature meet the preset conditions; A first determining module, configured to determine a reference opening of the expansion valve according to the operating frequency and the outdoor ambient temperature; The second determination module is used to determine the defrost mode according to the relationship between the difference between the measured opening and the reference opening and a first threshold.

8. The device according to claim 7, characterized in that The second determining module is used to: When the difference is less than the first threshold, determining that the defrost mode is hot gas defrost; or, When the difference is greater than or equal to the first threshold, it is determined that the defrost mode is reverse cycle defrost.

9. An electronic device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for determining the defrost mode according to any one of claims 1 to 6 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for determining the defrost mode as described in any one of claims 1 to 6 is implemented.

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