Air conditioner control method and device, electronic equipment and storage medium

Abstract

The invention provides a control method and device of an air conditioner, electronic equipment and a storage medium, and relates to the technical field of air conditioners. Comprising the steps that when hot air defrosting is carried out, the indoor environment temperature and the outdoor environment temperature are obtained; according to the indoor environment temperature and the outdoor environment temperature, the reference temperature difference between an inlet and an outlet of an outdoor unit heat exchanger in the hot gas defrosting process is determined; in the hot air defrosting process, the measurement temperature corresponding to an inlet of the outdoor unit heat exchanger is obtained; and when the difference value between the measured temperature and the reference temperature difference is larger than the temperature threshold value, hot gas defrosting is stopped. Therefore, the reference temperature difference between the inlet and the outlet of the outdoor unit heat exchanger in the hot air defrosting process can be determined, the temperature corresponding to the outlet of the outdoor unit heat exchanger is determined in combination with the measured temperature corresponding to the inlet of the outdoor unit heat exchanger, then the opportunity that the air conditioner quits hot air defrosting can be accurately determined, and the defrosting reliability is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning, and in particular to a control method, device, electronic device and storage medium for an air conditioner. 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 hot gas defrosting does not reverse the refrigerant flow direction during defrosting, the temperature of the indoor heat exchanger is higher, and no heat is absorbed from the room, so the heating comfort is better. However, it is necessary to add a temperature sensing bag at the condenser outlet (heating flow direction) to detect the temperature of the outdoor heat exchanger outlet during defrosting to determine the melting of the outdoor frost layer. When the temperature of the outdoor condenser outlet meets the conditions, the control system exits defrosting. This control method requires an additional temperature sensing bag on the basis of the conventional air conditioning system, which increases the cost. 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 controlling an air conditioner, comprising:

[0006] When entering hot gas defrosting, obtain the indoor ambient temperature and outdoor ambient temperature;

[0007] Determining a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature;

[0008] During the hot gas defrosting process, obtaining a measured temperature corresponding to an inlet of the outdoor heat exchanger;

[0009] When the difference between the measured temperature and the reference temperature difference is greater than a temperature threshold, hot gas defrosting is exited.

[0010] A second aspect of the present disclosure provides a control device for an air conditioner, comprising:

[0011] The first acquisition module is used to obtain the indoor ambient temperature and the outdoor ambient temperature when entering the hot gas defrosting mode;

[0012] A first determination module is used to determine a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature;

[0013] A second acquisition module is used to obtain the measured temperature corresponding to the inlet of the outdoor heat exchanger during the hot gas defrosting process;

[0014] The exit module is used to exit hot gas defrosting when the difference between the measured temperature and the reference temperature difference is greater than a temperature threshold.

[0015] The third aspect of the present disclosure proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the air conditioner control method proposed in the first aspect 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 control method of the air conditioner proposed in the first aspect embodiment of the present disclosure is implemented.

[0017] The control method, device, electronic device and storage medium of the air conditioner provided by the present disclosure have the following beneficial effects:

[0018] In the disclosed embodiment, the indoor environment temperature and the outdoor environment temperature can be obtained when entering the hot gas defrosting process, and then the reference temperature difference between the inlet and the outlet of the outdoor heat exchanger during the hot gas defrosting process can be determined according to the indoor environment temperature and the outdoor environment temperature, and the measured temperature corresponding to the inlet of the outdoor heat exchanger can be obtained during the hot gas defrosting process, and finally, when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold, the hot gas defrosting process can be exited. In this way, the reference temperature difference between the inlet and the outlet of the outdoor heat exchanger during the hot gas defrosting process can be determined, and the temperature corresponding to the outlet of the outdoor heat exchanger can be determined in combination with the measured temperature corresponding to the inlet of the outdoor heat exchanger, and then the time when the air conditioner exits the hot gas defrosting process can be accurately determined, thereby ensuring 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 flow chart of a method for controlling an air conditioner provided by an embodiment of the present disclosure;

[0022] Figure 2 A schematic diagram of the structure of an air conditioner provided by an embodiment of the present disclosure;

[0023] Figure 3A flow chart of a method for controlling an air conditioner provided by another embodiment of the present disclosure;

[0024] Figure 4 A schematic diagram of the structure of a control device for an air conditioner provided by another 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 control method, an apparatus, an electronic device, and a storage medium for an air conditioner according to embodiments of the present disclosure with reference to the accompanying drawings.

[0028] Figure 1 A flowchart of a method for controlling an air conditioner provided in an embodiment of the present disclosure is provided.

[0029] The embodiment of the present disclosure takes the control method of the air conditioner as an example in which the control device of the air conditioner is configured. The control device of the air conditioner can be applied to any electronic device so that the electronic device can perform the control function of the air conditioner.

[0030] like Figure 1 As shown, the control method of the air conditioner may include the following steps:

[0031] Step 101, when entering hot gas defrosting, obtain the indoor ambient temperature and the outdoor ambient temperature.

[0032] Figure 2 This is a schematic diagram of the structure of an air conditioner provided by an embodiment of the present disclosure. Figure 2 As shown, during the hot gas defrosting process, the high-temperature refrigerant flows from the compressor 101 through the four-way valve 102 and enters the indoor heat exchanger 103. At this time, the indoor fan is stopped, and the high-temperature refrigerant passes through the expansion valve 104 without throttling and enters the outdoor heat exchanger 106 for defrosting. After defrosting, the low-temperature refrigerant passes through the four-way valve 102 and returns to the compressor 101. Therefore, the temperature at the outlet 107 of the outdoor heat exchanger is the lowest during defrosting, and it is necessary to determine whether to exit defrosting based on the temperature at the outlet 107 of the outdoor heat exchanger.

[0033] The control method of the air conditioner disclosed in the present invention mainly corrects the temperature detected by the external tube temperature sensing package set at the inlet 105 of the external heat exchanger 106 to represent the temperature at the outlet 107 of the external heat exchanger during defrosting, which is the lowest temperature of the heat exchanger components.

[0034] Step 102, determining a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature.

[0035] It should be noted that, since only the external tube temperature sensing package is provided at the inlet 105 of the heat exchanger 106, the temperature at the outlet 107 of the outdoor heat exchanger cannot be obtained in time, therefore, in the embodiment of the present disclosure, the reference temperature difference between the inlet and outlet of the outdoor heat exchanger during the hot gas defrosting process of the air conditioner under different indoor and outdoor ambient temperatures can be predetermined. Then, based on the reference temperature difference, the temperature at the outlet of the outdoor heat exchanger is estimated, and then it is determined whether to exit defrosting.

[0036] Optionally, when the outdoor ambient temperature is less than a first threshold and the indoor ambient temperature is greater than or equal to a second threshold, the reference temperature difference is determined to be a first value.

[0037] The first threshold is smaller than the second threshold. For example, the first threshold may be -5 degrees Celsius (°C) or -6°C, etc. The second threshold may be 15°C or 14°C, etc. The present disclosure does not limit the values ​​of the first threshold and the second threshold.

[0038] The first value may be 3, 2.9, 3.1, etc. This disclosure does not limit this.

[0039] Alternatively, when the outdoor ambient temperature is lower than the first threshold and the indoor ambient temperature is lower than the second threshold, the reference temperature difference is determined to be a second value.

[0040] The first value is smaller than the second value.

[0041] For example, the second numerical value may be 4, 4.1, 3.9, etc. This disclosure does not limit this.

[0042] Alternatively, when the outdoor ambient temperature is greater than or equal to the first threshold and the indoor ambient temperature is greater than or equal to the second threshold, the reference temperature difference is determined to be a third value.

[0043] The first value is greater than the third value. For example, the third value may be 2, 2.1, etc. This disclosure does not limit this.

[0044] Alternatively, when the outdoor ambient temperature is greater than the first threshold and the indoor ambient temperature is less than the second threshold, the reference temperature difference is determined to be a fourth value.

[0045] The fourth value is smaller than the second value, and the fourth value is larger than the third value. For example, the fourth value may be 3, 2.8, 2.6, etc. This disclosure does not limit this.

[0046] For example, the temperature differences corresponding to different indoor ambient temperatures and outdoor ambient temperatures may be shown in Table 1.

[0047] Table 1

[0048] △T <![CDATA[T 外环 <a=-5℃]]> <![CDATA[a=-5℃≤T 外环 ]]> <![CDATA[b=15℃≤T 内环 ]]> <![CDATA[c 1 =3]]> <![CDATA[d 1 =2]]> <![CDATA[T 内环 <b=15℃]]> <![CDATA[c 2 =4]]> <![CDATA[d 2 =3]]>

[0049] As shown in Table 1, △T represents the reference temperature difference between the inlet and outlet of the outdoor heat exchanger, T 外环 Indicates the outdoor ambient temperature, T 外环 represents the indoor ambient temperature, a represents the first threshold, which is -5°C, b represents the second threshold, which is 15°C, c represents the second threshold, which is 15°C, 1 Indicates the first value, the value is 3, c 2 Indicates the second value, the value is 4, d 1 Indicates the third value, which is 2, d 2 Represents the fourth value, which is 3.

[0050] That is, when the outdoor ambient temperature is less than -5℃ and the indoor ambient temperature is greater than or equal to 15℃, the reference temperature difference is determined to be 3; when the outdoor ambient temperature is less than -5 and the indoor ambient temperature is less than 15℃, the reference temperature difference is determined to be 4; when the outdoor ambient temperature is greater than or equal to -5℃ and the indoor ambient temperature is greater than or equal to 15℃, the reference temperature difference is determined to be 2; when the outdoor ambient temperature is greater than -5℃ and the indoor ambient temperature is less than 15℃, the reference temperature difference is determined to be 3.

[0051] It should be noted that the embodiment of the present disclosure does not limit the number of indoor ambient temperature division ranges and the number of indoor ambient temperature division ranges, that is, the indoor ambient temperature can also be divided into <10°C, 10°C-20°C, and >20°C.

[0052] Step 103, during the hot gas defrosting process, obtaining a measured temperature corresponding to the inlet of the outdoor heat exchanger.

[0053] In the embodiment of the present disclosure, after obtaining the reference temperature difference, the measured temperature corresponding to the inlet of the external heat exchanger can be obtained in real time during the hot gas defrosting process, and then the predicted temperature corresponding to the outlet of the external heat exchanger can be determined based on the difference between the measured temperature and the reference temperature difference.

[0054] Step 104 : when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold, degrade the hot gas defrosting.

[0055] The difference between the measured temperature and the reference temperature difference can be used as the temperature corresponding to the outlet of the outdoor heat exchanger.

[0056] like Figure 2 As shown, since the refrigerant flows from the inlet 105 of the heat exchanger 106 through the outlet 107 of the outdoor heat exchanger, the lost heat is mainly used for outdoor defrosting and environmental heat dissipation, and the heat lost by outdoor defrosting is much greater than the environmental heat dissipation. Therefore, as the defrosting proceeds, the frost layer of the outdoor unit decreases, and the temperature difference between the inlet 105 and the outlet 107 gradually decreases. Therefore, the temperature difference in the early stage of defrosting can be used to predict the temperature at the outlet 107, thereby fully ensuring the reliability of defrosting.

[0057] The temperature threshold may be a temperature that the outlet of the outdoor unit heat exchanger should reach when indicating the exit of hot gas defrosting.

[0058] After determining the temperature corresponding to the outlet of the outdoor heat exchanger, it can be determined whether the temperature corresponding to the outlet of the outdoor heat exchanger is greater than a temperature threshold, and if it is greater than the temperature threshold, the hot gas is degraded to defrost.

[0059] Optionally, if the difference between the measured temperature and the reference temperature difference within a preset time is greater than a temperature threshold, hot gas defrosting is exited, thereby further ensuring clean defrosting and improving the user experience.

[0060] The preset duration may be 30 seconds, 20 seconds, etc. This disclosure does not limit this.

[0061] In the disclosed embodiment, the indoor environment temperature and the outdoor environment temperature can be obtained when entering the hot gas defrosting process, and then the reference temperature difference between the inlet and the outlet of the outdoor heat exchanger during the hot gas defrosting process can be determined according to the indoor environment temperature and the outdoor environment temperature, and the measured temperature corresponding to the inlet of the outdoor heat exchanger can be obtained during the hot gas defrosting process, and finally, when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold, the hot gas defrosting process can be exited. In this way, the reference temperature difference between the inlet and the outlet of the outdoor heat exchanger during the hot gas defrosting process can be determined, and the temperature corresponding to the outlet of the outdoor heat exchanger can be determined in combination with the measured temperature corresponding to the inlet of the outdoor heat exchanger, and then the time when the air conditioner exits the hot gas defrosting process can be accurately determined, thereby ensuring the reliability of defrosting.

[0062] Figure 3 A flow chart of a method for controlling an air conditioner provided by an embodiment of the present disclosure is shown in FIG. Figure 3 As shown, the control method of the air conditioner may include the following steps:

[0063] Step 301, when entering hot gas defrosting, obtain the indoor ambient temperature and the outdoor ambient temperature.

[0064] Step 302, determining a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature.

[0065] The specific implementation forms of step 301 and step 303 can refer to the detailed description in other disclosed embodiments, and will not be described in detail here.

[0066] Step 303, when entering hot gas defrosting, determine the fluorine deficiency level of the air conditioner.

[0067] When the refrigerant status of the air-conditioning system is abnormal (refrigerant may leak during the user's installation and use of the air conditioner), the inlet and outlet temperature difference of the outdoor unit heat exchanger will increase during defrosting. Therefore, the reference temperature difference needs to be corrected to avoid incomplete defrosting and exiting defrosting.

[0068] In the disclosed embodiment, the degree of fluorine deficiency can be identified by the operation of the expansion valve opening before entering the defrosting stage. 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, and after entering 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 high, and the air conditioning system will actively increase the opening, increase the system circulation flow, reduce the exhaust, and finally approach or reach the target exhaust.

[0069] Therefore, the degree of fluorine deficiency can be judged by comparing the difference between the measured opening at the time of entering defrost and the reference opening corresponding to the time of entering 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 degree of fluorine deficiency.

[0070] Optionally, when entering hot gas defrost, 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 based on the outdoor ambient temperature and the operating frequency. Finally, the fluorine deficiency level is determined according to the difference between the reference opening and the measured opening.

[0071] 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.

[0072] The reference opening may be a theoretical optimal opening of the expansion valve corresponding to the current operating frequency and outdoor ambient temperature.

[0073] Optionally, you can first obtain 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, and then determine the correction coefficient according to the outdoor ambient temperature. Finally, determine the 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] Among them, the formula for determining the reference opening can be shown as follows:

[0079]

[0080] 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].

[0081] Among them, the fluorine deficiency level can be used to indicate the degree of fluorine deficiency in the air conditioner.

[0082] Optionally, when the difference is less than the third threshold, the fluorine deficiency level is determined to be the first level.

[0083] The third threshold may be 50 steps (P), 40P, etc. This disclosure does not limit this.

[0084] Alternatively, when the difference is greater than or equal to the third threshold value and less than the fourth threshold value, the fluorine deficiency level is determined to be the second level.

[0085] The fourth threshold is greater than the third threshold. For example, the fourth threshold may be 100 steps (P), 90P, etc. This disclosure does not limit this.

[0086] Among them, the fluorine deficiency degree corresponding to the second level is higher than the fluorine deficiency degree corresponding to the first level.

[0087] Alternatively, in a case where the difference is greater than or equal to the fourth threshold value, the fluorine deficiency level is determined to be the third level.

[0088] Among them, the fluorine deficiency degree corresponding to the third level is higher than the fluorine deficiency degree corresponding to the second level.

[0089] Step 304, determining a temperature difference correction value according to the fluorine deficiency level.

[0090] In the disclosed embodiment, the more serious the fluorine deficiency level is, the larger the corresponding temperature difference correction value should be, so that defrosting can be performed cleanly under different fluorine deficiency levels.

[0091] Optionally, when the fluorine deficiency level is the first level, the temperature difference correction value is determined to be a fifth value.

[0092] The fifth value may be 0° C., 0.5° C., etc., which is not limited in the present disclosure.

[0093] Alternatively, when the fluorine deficiency level is the second level, the temperature difference correction value is determined to be a sixth value.

[0094] The sixth value is greater than the fifth value. For example, the sixth value may be 2° C., 2.5° C., etc. This disclosure does not limit this.

[0095] Alternatively, when the fluorine deficiency level is the third level, the temperature difference correction value is determined to be the seventh value.

[0096] The seventh value is greater than the sixth value. For example, the seventh value may be 4° C., 5° C., etc. This disclosure does not limit this.

[0097] Table 2

[0098] △P<e=50P e≤△P<f=100P f=100P≤△P Temperature difference correction value <![CDATA[h 1 =0]]> <![CDATA[h 2 =2]]> <![CDATA[h 3 =4]]>

[0099] As shown in Table 2, △P represents the difference between the reference opening and the measured opening; e represents the third threshold value, which can be 50P; f represents the fourth threshold value, which can be 100P; h 1 is the fifth value, which can be 0℃; h 2 Indicates the sixth value, which is 2℃, h 3 It represents the seventh value, which is 4°C.

[0100] That is, when the fluorine deficiency level is the first level, the temperature difference correction value is determined to be 0°C; or, when the fluorine deficiency level is the second level, the temperature difference correction value is determined to be 2°C; or, when the fluorine deficiency level is the third level, the temperature difference correction value is determined to be 4°C.

[0101] Step 305: correct the reference temperature difference based on the temperature difference correction value.

[0102] The corrected reference temperature difference is the sum of the reference temperature difference before correction and the temperature difference correction value.

[0103] In the disclosed embodiment, after determining the temperature difference correction value corresponding to the current fluorine deficiency level of the air conditioner, the reference temperature difference can be corrected to make the determined reference temperature difference more accurate, thereby avoiding premature exit from defrosting due to a small reference temperature difference, which would affect the defrosting effect.

[0104] Step 306: During the hot gas defrosting process, obtain the measured temperature corresponding to the inlet of the outdoor heat exchanger.

[0105] Step 307 : when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold, exit the hot gas defrosting.

[0106] In the disclosed embodiment, the indoor environment temperature and the outdoor environment temperature can be obtained when entering the hot gas defrosting, and then the reference temperature difference between the inlet and outlet of the outdoor heat exchanger during the hot gas defrosting process can be determined based on the indoor environment temperature and the outdoor environment temperature, and the fluorine deficiency level of the air conditioner can be determined. According to the fluorine deficiency level, the temperature difference correction value can be determined to correct the reference temperature difference, and then the measured temperature corresponding to the inlet of the outdoor heat exchanger can be obtained during the hot gas defrosting process, and finally, when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold, the hot gas defrosting can be exited. Therefore, the reference temperature difference can be corrected according to the fluorine deficiency level of the air conditioner, and then the time for the air conditioner to exit the hot gas defrosting can be accurately determined when the air conditioner lacks fluorine, further ensuring the reliability of defrosting.

[0107] In order to implement the above embodiments, the present disclosure also provides a control device for an air conditioner.

[0108] Figure 4 A schematic diagram of the structure of a control device for an air conditioner provided in an embodiment of the present disclosure.

[0109] like Figure 4 As shown, the control device 400 of the air conditioner may include:

[0110] The first acquisition module 401 is used to acquire the indoor environment temperature and the outdoor environment temperature when entering the hot gas defrosting mode;

[0111] The first determination module 402 is used to determine a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature;

[0112] The second acquisition module 403 is used to obtain the measured temperature corresponding to the inlet of the outdoor heat exchanger during the hot gas defrosting process;

[0113] The exit module 404 is used to exit the hot gas defrosting when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold.

[0114] Optionally, the first determining module 402 is configured to:

[0115] When the outdoor ambient temperature is less than a first threshold and the indoor ambient temperature is greater than or equal to a second threshold, determining the reference temperature difference to be a first value; or;

[0116] When the outdoor ambient temperature is less than the first threshold and the indoor ambient temperature is less than the second threshold, determining the reference temperature difference to be a second value; or,

[0117] When the outdoor ambient temperature is greater than or equal to the first threshold and the indoor ambient temperature is greater than or equal to the second threshold, determining the reference temperature difference to be a third value; or,

[0118] When the outdoor ambient temperature is greater than the first threshold and the indoor ambient temperature is less than the second threshold, determining the reference temperature difference to be a fourth value;

[0119] Among them, the first threshold is smaller than the second threshold, the first value is smaller than the second value, the first value is larger than the third value, the fourth value is smaller than the second value, and the fourth value is larger than the third value.

[0120] Optionally, a correction module is also included, for:

[0121] When entering hot gas defrosting, determine the fluorine deficiency level of the air conditioner;

[0122] Determine the temperature difference correction value according to the fluorine deficiency level;

[0123] Based on the temperature difference correction value, the reference temperature difference is corrected.

[0124] Optionally, the correction module is also used to:

[0125] When entering hot gas defrosting, obtain the current operating frequency of the air conditioner and the measured opening of the expansion valve;

[0126] Determine the reference opening of the expansion valve based on the outdoor ambient temperature and operating frequency;

[0127] The fluorine deficiency level is determined based on the difference between the reference opening and the measured opening.

[0128] Optionally, the correction module is also used to:

[0129] 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;

[0130] Determine the correction factor according to the outdoor ambient temperature;

[0131] 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.

[0132] Optionally, the correction module is also used to:

[0133] When the difference is less than the third threshold, the fluorine deficiency level is determined to be the first level; or,

[0134] When the difference is greater than or equal to the third threshold value and less than the fourth threshold value, the fluorine deficiency level is determined to be the second level; or,

[0135] When the difference is greater than or equal to the fourth threshold, the fluorine deficiency level is determined to be the third level;

[0136] Among them, the fourth threshold is greater than the third threshold; the degree of fluorine deficiency corresponding to the second level is higher than the degree of fluorine deficiency corresponding to the first level; and the degree of fluorine deficiency corresponding to the third level is higher than the degree of fluorine deficiency corresponding to the second level.

[0137] Optionally, the correction module is also used to:

[0138] When the fluorine deficiency level is the first level, the temperature difference correction value is determined to be a fifth value; or,

[0139] When the fluorine deficiency level is the second level, the temperature difference correction value is determined to be a sixth value; or,

[0140] When the fluorine deficiency level is the third level, the temperature difference correction value is determined to be the seventh value;

[0141] Among them, the sixth value is greater than the fifth value, and the seventh value is greater than the sixth value.

[0142] Optionally, the exit module 404 is used to:

[0143] If the difference between the measured temperature and the reference temperature difference within the preset time is greater than the temperature threshold, hot gas defrosting is exited.

[0144] 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.

[0145] The control device of the air conditioner of the disclosed embodiment obtains the indoor ambient temperature and the outdoor ambient temperature when entering the hot gas defrosting process, and then determines the reference temperature difference between the inlet and the outlet of the outdoor heat exchanger during the hot gas defrosting process according to the indoor ambient temperature and the outdoor ambient temperature, and obtains the measured temperature corresponding to the inlet of the outdoor heat exchanger during the hot gas defrosting process, and finally exits the hot gas defrosting process when the difference between the measured temperature and the reference temperature difference is greater than the temperature threshold. In this way, the reference temperature difference between the inlet and the outlet of the outdoor heat exchanger during the hot gas defrosting process can be determined, and the temperature corresponding to the outlet of the outdoor heat exchanger can be determined in combination with the measured temperature corresponding to the inlet of the outdoor heat exchanger, so that the time when the air conditioner exits the hot gas defrosting process can be accurately determined, thereby ensuring the reliability of defrosting.

[0146] In order to implement the above embodiments, the present disclosure also proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the air conditioner control method proposed in the above embodiments of the present disclosure is implemented.

[0147] 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 control method of the air conditioner proposed in the above embodiments of the present disclosure is implemented.

[0148] In order to implement the above embodiments, the present disclosure further proposes a computer program product, including a computer program. When the computer program is executed by a processor, it implements the control method of the air conditioner proposed in the above embodiments of the present disclosure.

[0149] 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.

[0150] 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).

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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 controlling an air conditioner, characterized in that: include: When entering hot gas defrosting, obtain the indoor ambient temperature and outdoor ambient temperature; Determining a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature; During the hot gas defrosting process, obtaining a measured temperature corresponding to an inlet of the outdoor heat exchanger; When the difference between the measured temperature and the reference temperature difference is greater than a temperature threshold, hot gas defrosting is exited.

2. The method according to claim 1, characterized in that The step of determining a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature includes: When the outdoor ambient temperature is less than a first threshold and the indoor ambient temperature is greater than or equal to a second threshold, determining the reference temperature difference to be a first value; or; When the outdoor ambient temperature is lower than the first threshold and the indoor ambient temperature is lower than the second threshold, determining the reference temperature difference to be a second value; or, When the outdoor ambient temperature is greater than or equal to the first threshold and the indoor ambient temperature is greater than or equal to the second threshold, determining the reference temperature difference to be a third value; or, When the outdoor ambient temperature is greater than the first threshold and the indoor ambient temperature is less than the second threshold, determining the reference temperature difference to be a fourth value; The first threshold is smaller than the second threshold, the first value is smaller than the second value, the first value is larger than the third value, the fourth value is smaller than the second value, and the fourth value is larger than the third value.

3. The method according to claim 1, characterized in that Also includes: When entering hot gas defrosting, determine the fluorine deficiency level of the air conditioner; Determining a temperature difference correction value according to the fluorine deficiency level; The reference temperature difference is corrected based on the temperature difference correction value.

4. The method according to claim 3, characterized in that Determining the fluorine deficiency level of the air conditioner includes: When entering hot gas defrosting, 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 based on the outdoor ambient temperature and the operating frequency; The fluorine deficiency level is determined according to a difference between the reference opening and the measured opening.

5. The method according to claim 3, 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.

6. The method according to claim 3, characterized in that The step of determining the fluorine deficiency level according to the difference between the reference opening and the measured opening comprises: When the difference is less than the third threshold, determining the fluorine deficiency level to be the first level; or, When the difference is greater than or equal to the third threshold value and less than the fourth threshold value, the fluorine deficiency level is determined to be the second level; or, When the difference is greater than or equal to the fourth threshold, determining that the fluorine deficiency level is the third level; Among them, the fourth threshold is greater than the third threshold; the fluorine deficiency degree corresponding to the second level is higher than the fluorine deficiency degree corresponding to the first level; the fluorine deficiency degree corresponding to the third level is higher than the fluorine deficiency degree corresponding to the second level.

7. The method according to claim 6, characterized in that Determining the temperature difference correction value according to the fluorine deficiency level includes: When the fluorine deficiency level is the first level, determining the temperature difference correction value to be a fifth value; or, When the fluorine deficiency level is the second level, determining the temperature difference correction value to be a sixth value; or, When the fluorine deficiency level is the third level, determining the temperature difference correction value to be a seventh value; The sixth value is greater than the fifth value, and the seventh value is greater than the sixth value.

8. The method according to any one of claims 1 to 7, characterized in that: The step of exiting hot gas defrosting comprises: If the difference between the measured temperature and the reference temperature difference within the preset time period is greater than the temperature threshold, hot gas defrosting is exited.

9. A control device for an air conditioner, characterized in that: include: The first acquisition module is used to obtain the indoor ambient temperature and the outdoor ambient temperature when entering the hot gas defrosting mode; A first determination module is used to determine a reference temperature difference between an inlet and an outlet of an outdoor heat exchanger during hot gas defrosting according to the indoor ambient temperature and the outdoor ambient temperature; A second acquisition module is used to obtain the measured temperature corresponding to the inlet of the outdoor heat exchanger during the hot gas defrosting process; The exit module is used to exit hot gas defrosting when the difference between the measured temperature and the reference temperature difference is greater than a temperature threshold.

10. 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 control method of the air conditioner as claimed in any one of claims 1 to 8 is implemented.

11. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the air conditioner control method as described in any one of claims 1 to 8 is implemented.

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