Air conditioner, control method and device therefor, and storage medium

Abstract

The application relates to an air conditioner and a control method, device and storage medium thereof. The method comprises the following steps: in the case that the outdoor environment temperature is greater than or equal to the target temperature, the compressor is controlled to operate at a target frequency, and the outdoor fan is controlled to operate at a target rotating speed; in the case that the exhaust temperature of the compressor is greater than or equal to a first temperature, the rotating speed of the outdoor fan is increased until the exhaust temperature is less than the first temperature or the rotating speed of the outdoor fan is equal to the highest rotating speed, wherein the first temperature is determined according to the outdoor environment temperature; in the case that the first temperature difference between the indoor environment temperature and the inner pipe temperature is less than or equal to a first threshold value, the rotating speed of the indoor fan is reduced until the first temperature difference is greater than the first threshold value or the rotating speed of the indoor fan is equal to the lowest rotating speed. The application solves the technical problem that the air conditioner cannot be refrigerated under extremely high outdoor temperature.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and more particularly to an air conditioner and its control method, apparatus and storage medium. Background Technology

[0002] Current air conditioning technology is relatively mature and can basically meet users' regular cooling and heating needs. However, when the air conditioner is under extreme load, such as in the summer when the outside temperature is high and the outdoor unit has poor heat dissipation, it may fail to start or shut down for protection, thus failing to cool the user. Summary of the Invention

[0003] This application provides an air conditioner and its control method, apparatus, and storage medium to solve the technical problem that the air conditioner cannot cool under extremely high outdoor temperatures.

[0004] In a first aspect, this application provides a method for controlling an air conditioner, comprising: when an outdoor ambient temperature is detected to be greater than or equal to a target temperature, controlling a compressor to operate at a target frequency and an outdoor fan to operate at a target speed; when an exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, increasing the speed of the outdoor fan until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to a maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature; and when a first temperature difference between the indoor ambient temperature and the indoor pipe temperature is detected to be less than or equal to a first threshold, decreasing the speed of the indoor fan until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to a minimum speed.

[0005] Secondly, this application provides a control device for an air conditioner, comprising: a first control module, configured to control the compressor to operate at a target frequency and the outdoor fan to operate at a target speed when the outdoor ambient temperature is detected to be greater than or equal to a target temperature; a second control module, configured to increase the speed of the outdoor fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature; and a third control module, configured to decrease the speed of the indoor fan when the first temperature difference between the indoor ambient temperature and the indoor pipe temperature is detected to be less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed.

[0006] As an optional example, the second control module includes: an acquisition unit for acquiring the outdoor ambient temperature and determining the temperature range in which the outdoor ambient temperature falls; a first determination unit for determining a first temperature corresponding to the temperature range based on the temperature range; a second determination unit for determining a target speed corresponding to the temperature range based on the temperature range; and, when the exhaust temperature of the compressor is detected to be greater than or equal to the first temperature, controlling the outdoor fan to increase its speed at the target speed until the exhaust temperature is less than the first temperature or the speed of the outdoor fan reaches its maximum speed.

[0007] As an optional example, the above-mentioned device further includes: a fourth control module, configured to, after the first temperature difference is greater than the first threshold or the speed of the internal fan is equal to the minimum speed, increase the frequency of the compressor when a second temperature difference between the exhaust temperature and the first temperature is less than or equal to a second threshold, or a third temperature difference between the external pipe temperature and the second temperature is less than or equal to the second threshold, until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold, wherein the second temperature is determined based on the outdoor ambient temperature; a fifth control module, configured to control the electronic expansion valve to open at a first speed; and an acquisition module. The first control module is used to obtain the inner tube temperature when the current opening degree of the electronic expansion valve is detected to be greater than or equal to the first opening degree and less than or equal to the second opening degree, wherein the first opening degree is the opening degree when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed, and the second opening degree is greater than the first opening degree; the sixth control module is used to control the electronic expansion valve to operate at the first opening degree when the fourth temperature difference between the inner tube temperature and the third temperature is detected to be greater than or equal to the third threshold, wherein the third temperature is the temperature of the inner tube when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0008] As an optional example, the fourth control module mentioned above includes: a third determining unit, used to determine the increase rate of the compressor based on the temperature range of the outdoor ambient temperature.

[0009] As an optional example, the above-described device further includes: a seventh control module, configured to, after controlling the electronic expansion valve to open at a first speed, control the electronic expansion valve to operate at the first opening degree when it is detected that the current opening degree of the electronic expansion valve is greater than the second opening degree.

[0010] As an optional example, the above-described device further includes: an eighth control module, configured to control the electronic expansion valve to open at a second speed after the first temperature difference is greater than the first threshold or the rotational speed of the internal fan is equal to the minimum rotational speed, and after detecting that the second temperature difference is less than or equal to the fourth threshold and greater than the second threshold, or the third temperature difference is less than or equal to the fourth threshold and greater than the second threshold, wherein the fourth threshold is greater than the second threshold and less than zero, and the second speed is less than the first speed.

[0011] As an optional example, the above-mentioned device further includes: a ninth control module, configured to reduce the frequency of the compressor after detecting that the second temperature difference is greater than or equal to zero or the third temperature difference is greater than or equal to zero, after the first temperature difference is greater than or equal to the first threshold or the speed of the internal fan is equal to the minimum speed, until the second temperature difference is less than zero or the third temperature difference is less than zero.

[0012] Thirdly, this application provides an air conditioner, comprising: a first control module, configured to control a compressor to operate at a target frequency and an outdoor fan to operate at a target speed when an outdoor ambient temperature is detected to be greater than or equal to a target temperature; a second control module, configured to increase the speed of the outdoor fan when an exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to a maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature; and a third control module, configured to decrease the speed of the indoor fan when a first temperature difference between the indoor ambient temperature and the indoor pipe temperature is detected to be less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to a minimum speed.

[0013] As an optional example, the second control module includes: an acquisition unit for acquiring the outdoor ambient temperature and determining the temperature range in which the outdoor ambient temperature falls; a first determination unit for determining a first temperature corresponding to the temperature range based on the temperature range; a second determination unit for determining a target speed corresponding to the temperature range based on the temperature range; and, when the exhaust temperature of the compressor is detected to be greater than or equal to the first temperature, controlling the outdoor fan to increase its speed at the target speed until the exhaust temperature is less than the first temperature or the speed of the outdoor fan reaches its maximum speed.

[0014] As an optional example, the air conditioner further includes: a fourth control module, configured to, after the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed, and upon detecting that a second temperature difference between the exhaust temperature and the first temperature is less than or equal to a second threshold, or a third temperature difference between the outdoor pipe temperature and the second temperature is less than or equal to the second threshold, increase the frequency of the compressor until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold, wherein the second temperature is determined based on the outdoor ambient temperature; a fifth control module, configured to control the electronic expansion valve to open at a first speed; and an acquisition module. The first control module is used to obtain the inner tube temperature when the current opening degree of the electronic expansion valve is detected to be greater than or equal to the first opening degree and less than or equal to the second opening degree, wherein the first opening degree is the opening degree when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed, and the second opening degree is greater than the first opening degree; the sixth control module is used to control the electronic expansion valve to operate at the first opening degree when the fourth temperature difference between the inner tube temperature and the third temperature is detected to be greater than or equal to the third threshold, wherein the third temperature is the temperature of the inner tube when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0015] As an optional example, the fourth control module mentioned above includes: a third determining unit, used to determine the increase rate of the compressor based on the temperature range of the outdoor ambient temperature.

[0016] As an optional example, the air conditioner further includes: a seventh control module, which, after controlling the electronic expansion valve to open at a first speed, controls the electronic expansion valve to operate at the first opening degree when it is detected that the current opening degree of the electronic expansion valve is greater than the second opening degree.

[0017] As an optional example, the air conditioner further includes: an eighth control module, configured to control the electronic expansion valve to open at a second speed after the first temperature difference is greater than the first threshold or the speed of the internal fan is equal to the minimum speed, and after detecting that the second temperature difference is less than or equal to the fourth threshold and greater than the second threshold, or the third temperature difference is less than or equal to the fourth threshold and greater than the second threshold, wherein the fourth threshold is greater than the second threshold and less than zero, and the second speed is less than the first speed.

[0018] As an optional example, the air conditioner further includes: a ninth control module, configured to reduce the frequency of the compressor after detecting that the second temperature difference is greater than or equal to zero or the third temperature difference is greater than or equal to zero, when the first temperature difference is greater than or equal to the first threshold or the speed of the internal fan is equal to the minimum speed, until the second temperature difference is less than zero or the third temperature difference is less than zero.

[0019] Fourthly, this application provides a storage medium storing a computer program, wherein the computer program is executed by a processor to perform the above-described air conditioner control method.

[0020] Fifthly, this application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the above-described air conditioner control method through the computer program.

[0021] In this embodiment, a method is adopted to control the compressor to operate at a target frequency and the outdoor fan to operate at a target speed when the outdoor ambient temperature is detected to be greater than or equal to a target temperature; to increase the speed of the outdoor fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature; and to decrease the speed of the indoor fan when the first temperature difference between the indoor ambient temperature and the indoor pipe temperature is detected to be less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed. Because this method adjusts the speed of the indoor and outdoor fans by detecting parameters such as the compressor's exhaust temperature and the indoor pipe temperature, it enables the air conditioner to continue cooling normally even under extremely high outdoor ambient temperatures, meeting the user's cooling needs and increasing the upper limit of the outdoor ambient temperature for reliable air conditioner operation, thereby solving the technical problem of the air conditioner's inability to cool under extremely high outdoor temperatures. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0025] Figure 1 This is a flowchart of an optional air conditioner control method according to an embodiment of this application;

[0026] Figure 2 This is a diagram of the high-temperature cooling control logic of an optional air conditioning control method according to an embodiment of this application;

[0027] Figure 3 This is a diagram showing the high-temperature cooling control logic of an optional air conditioning control method according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of an optional air conditioner control device according to an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of an optional air conditioner according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of an optional electronic device according to an embodiment of this application. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0033] According to a first aspect of the embodiments of this application, an air conditioning control method is provided, optionally, as follows: Figure 1 As shown, the above method includes:

[0034] S102, when the outdoor ambient temperature is detected to be greater than or equal to the target temperature, control the compressor to run at the target frequency and the outdoor fan to run at the target speed;

[0035] S104, if the compressor exhaust temperature is detected to be greater than or equal to a first temperature, increase the speed of the outdoor fan until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature;

[0036] S106, when the first temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to the first threshold, the speed of the inner fan is reduced until the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0037] Optionally, in existing air conditioning control methods, when the outdoor ambient temperature reaches a certain high temperature, the air conditioner is under extreme load, and poor heat dissipation of the outdoor unit causes the air conditioner to shut down for protection, thus failing to meet the user's cooling needs. In this embodiment, however, the speeds of the indoor and outdoor fans are adjusted by detecting parameters such as the compressor's exhaust temperature and the inner pipe temperature. When the outdoor ambient temperature is greater than or equal to a preset target temperature, i.e., when the outdoor ambient temperature reaches a certain high temperature, the air conditioner's compressor is controlled to operate at a preset target frequency, and the air conditioner's outdoor fan operates at a preset target speed. The temperature range of the outdoor ambient temperature is determined, with each temperature range corresponding to a first temperature. For example, if the outdoor ambient temperature is [30, 36), then the corresponding first temperature is T. a If the outdoor ambient temperature is [36, 42), then the corresponding first temperature is T. b If the outdoor ambient temperature is [42, 48), then the corresponding first temperature is T. cSimultaneously, the compressor's exhaust temperature is monitored. When the exhaust temperature is greater than or equal to a first temperature, the outdoor fan speed is increased. Increased fan speed enhances the heat exchanger's cooling capacity, lowering the exhaust temperature. The compressor's exhaust temperature and outdoor fan speed are continuously monitored. When the compressor's exhaust temperature is lower than the first temperature or the outdoor fan speed reaches its maximum, the outdoor fan operates at its current speed. The first temperature difference between the indoor ambient temperature and the air conditioner's internal pipe temperature is monitored. If this first temperature difference is less than or equal to a first threshold, it indicates that the current internal pipe temperature is too high, resulting in a relatively high air outlet temperature. The air conditioner's indoor fan speed is then reduced, and the internal pipe temperature and fan speed are continuously monitored. When the first temperature difference exceeds the first threshold or the indoor fan speed reaches its minimum, the indoor fan operates at its current speed. Reducing the internal fan speed lowers the exhaust temperature, improving cooling comfort, and also lowers the internal pipe temperature, thereby reducing system high pressure and improving system reliability. This allows the air conditioner to continue cooling normally even in extremely high outdoor temperatures, meeting users' cooling needs and raising the upper limit of outdoor temperature for reliable air conditioner operation. Ultimately, this solves the technical problem of air conditioners being unable to cool in extremely high outdoor temperatures.

[0038] As an alternative example, if the compressor's exhaust temperature is detected to be greater than or equal to a first temperature, the speed of the outdoor fan is increased until the exhaust temperature is lower than the first temperature or the outdoor fan speed reaches its maximum speed, including:

[0039] Obtain the outdoor ambient temperature and determine the temperature range within which the outdoor ambient temperature falls;

[0040] Determine the first temperature corresponding to the temperature range based on the temperature range;

[0041] Determine the target rate corresponding to the temperature range based on the temperature range;

[0042] If the compressor's exhaust temperature is detected to be greater than or equal to a first temperature, the outdoor fan is controlled to increase its speed at a target rate until the exhaust temperature is less than the first temperature or the outdoor fan's speed reaches its maximum speed.

[0043] Optionally, in existing air conditioning control methods, when the outdoor ambient temperature reaches a certain high temperature, the air conditioner is under extreme load, and poor heat dissipation of the outdoor unit causes the air conditioner to shut down for protection, thus failing to meet the user's cooling needs. In this embodiment, the temperature range of the outdoor ambient temperature is determined, with each temperature range corresponding to a first temperature and an increase rate of the outdoor fan. For example, if the outdoor ambient temperature is [30, 36), then the corresponding first temperature is T. a The rate of increase is V a If the outdoor ambient temperature is [36, 42), then the corresponding first temperature is T. bThe rate of increase is V b If the outdoor ambient temperature is [42, 48), then the corresponding first temperature is T. c The rate of increase is V c When the outdoor ambient temperature is determined to be within the range of [42, 48), and the exhaust temperature is greater than or equal to T... c At that time, the speed of the outdoor fan was increased, and the outdoor fan operated at V... c Increase the engine speed until the exhaust temperature is less than T. c Alternatively, the outdoor fan speed can be increased to its maximum speed. This can enhance the heat dissipation capacity of the outdoor unit's heat exchanger and reduce the exhaust temperature.

[0044] As an optional example, after the first temperature difference is greater than a first threshold or the internal fan speed is equal to the minimum speed, the above method further includes:

[0045] If the second temperature difference between the exhaust temperature and the first temperature is less than or equal to the second threshold, or the third temperature difference between the external pipe temperature and the second temperature is less than or equal to the second threshold, the compressor frequency is increased until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold, wherein the second temperature is determined based on the outdoor ambient temperature.

[0046] Control the electronic expansion valve to open at the first speed;

[0047] When the current opening of the electronic expansion valve is detected to be greater than or equal to the first opening and less than or equal to the second opening, the inner tube temperature is obtained, wherein the first opening is the opening when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed, and the second opening is greater than the first opening.

[0048] If the temperature difference between the inner tube temperature and the third temperature is detected to be greater than or equal to the third threshold, the electronic expansion valve is controlled to operate at the first opening degree, wherein the third temperature is the temperature of the inner tube when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0049] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference from the first temperature that is less than or equal to the second threshold, or when the external pipe temperature rises to a third temperature difference from the second temperature that is less than or equal to the second threshold, wherein the second temperature, like the first temperature, is determined based on the temperature range of the outdoor ambient temperature. Increase the compressor frequency until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold. Control the electronic expansion valve to open at a higher first speed. Simultaneously monitor the opening degree of the electronic expansion valve. When the opening degree of the electronic expansion valve is greater than or equal to the first opening degree and less than or equal to the second opening degree, the opening degree is within a reasonable range. Detect the current inner pipe temperature. When the fourth temperature difference between the inner pipe temperature and the third temperature is greater than or equal to the third threshold, it indicates that the inner pipe temperature has increased after adjustment, the outlet air temperature has decreased, and the cooling comfort has declined. Control the electronic expansion valve to return to the first opening degree, and the air conditioner continues to operate in the current state.

[0050] As an alternative example, increasing the compressor frequency includes:

[0051] The compressor's boost rate is determined based on the outdoor ambient temperature range.

[0052] Optionally, in this embodiment, the compressor's boost rate is determined based on the temperature range of the outdoor ambient temperature, with one rate corresponding to one temperature range.

[0053] As an alternative example, after controlling the electronic expansion valve to open at a first speed, the above method further includes:

[0054] If the current opening degree of the electronic expansion valve is detected to be greater than the second opening degree, the electronic expansion valve is controlled to operate at the first opening degree.

[0055] Optionally, in this embodiment, when the current opening degree of the electronic expansion valve is detected to be greater than the second opening degree, it indicates that the opening degree is too large at this time, which may result in a small air conditioning flow and affect the cooling comfort. In this case, the electronic expansion valve is controlled to return to the first opening degree.

[0056] As an optional example, after the first temperature difference is greater than a first threshold or the internal fan speed is equal to the minimum speed, the above method further includes:

[0057] If a second temperature difference is detected to be less than or equal to a fourth threshold and greater than the second threshold, or a third temperature difference is detected to be less than or equal to a fourth threshold and greater than the second threshold, the electronic expansion valve is controlled to open at a second speed, wherein the fourth threshold is greater than the second threshold and less than zero, and the second speed is less than the first speed.

[0058] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference from the first temperature that is less than or equal to the fourth threshold and greater than the second threshold, or when the external pipe temperature rises to a third temperature difference from the second temperature that is less than or equal to the fourth threshold and greater than the second threshold, the electronic expansion valve is controlled to open at a lower second speed.

[0059] As an optional example, after the first temperature difference is greater than a first threshold or the internal fan speed is equal to the minimum speed, the above method further includes:

[0060] If the second temperature difference is detected to be greater than or equal to zero, or the third temperature difference is detected to be greater than or equal to zero, the compressor frequency is reduced until the second temperature difference is less than zero or the third temperature difference is less than zero.

[0061] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference greater than or equal to zero from the first temperature, or the external pipe temperature rises to a third temperature difference greater than or equal to zero from the second temperature, the compressor frequency is first reduced until the second temperature difference is less than zero or the third temperature difference is less than zero.

[0062] To illustrate with an example, this application relates to an air conditioner control method. Under extremely high outdoor ambient temperatures, the outdoor fan speed is adjusted by detecting parameters such as exhaust temperature and inner pipe temperature. This achieves high-temperature cooling for the air conditioner, meeting the user's cooling needs. The specific control logic is as follows: Figure 2 As shown:

[0063] Step 1: Receive the signal from the user to turn on the air conditioner and detect the current outdoor ambient temperature;

[0064] Step 2: Determine if the current outdoor ambient temperature meets the requirement of outdoor ambient temperature > T. max T max This is a preset outer ring temperature limit; if the outdoor ambient temperature is greater than T... max If so, proceed to step 3; otherwise, enter the normal refrigeration control.

[0065] Step 3: Enter high-temperature cooling control;

[0066] Step 4: The compressor operates at a preset high-temperature cooling frequency, and the outdoor fan operates at a preset high-temperature cooling speed;

[0067] Step 5: Detect the current outdoor ambient temperature and the current compressor discharge temperature T. 排 ;

[0068] Step 6: Obtain the current outdoor ambient temperature T 外环 In T a <T 外环 ≤T b ;

[0069] Step 7: Determine if the current exhaust temperature meets T. 排 ≥T 排max , among which, T 排max This is the highest target exhaust temperature under the current outdoor ambient temperature. If so, it indicates that the current exhaust temperature is too high, proceed to step 8; otherwise, proceed to step 1.

[0070] The outdoor ambient temperature ranges for steps 6 and 7, and their corresponding maximum target exhaust temperatures, are shown in Table (1):

[0071] (Table 1)

[0072]

[0073] Step 8: Increase the outdoor fan speed by N rpm / min. After the outdoor fan speed is increased, the heat dissipation capacity of the outdoor unit heat exchanger is enhanced, and the exhaust temperature decreases. The speed increase of the outdoor fan speed is shown in Table (2) below:

[0074] (Table 2)

[0075]

[0076] Step 9: Determine if the current outdoor fan speed has reached the maximum speed. If yes, proceed to step 1; otherwise, proceed to step 10.

[0077] Step 10: Determine if the current exhaust temperature meets T. 排 ≥T 排max If yes, proceed to step 8; otherwise, proceed to step 1.

[0078] Step 11: Detect the current inner tube temperature T 内管 With indoor ambient temperature T 内环 ;

[0079] Step 12: Determine the difference between the current indoor ambient temperature and the inner pipe temperature. If T 内环 -T 内管 If the value is less than or equal to ΔT1, it indicates that the current inner tube temperature is too high and the exhaust temperature is relatively high. In this case, proceed to step 13; otherwise, proceed to step 5.

[0080] Step 13: Reduce the speed of the internal fan by M rpm. Reducing the speed of the internal fan will lower the outlet air temperature and improve the cooling comfort. On the other hand, it will reduce the internal pipe temperature, thereby reducing the system high pressure and improving the system reliability.

[0081] Step 14: Determine if the current indoor fan speed is the minimum allowable speed for high-temperature cooling. If yes, proceed to step 5; otherwise, proceed to step 2 and continue to determine the difference between the current indoor ambient temperature and the indoor pipe temperature.

[0082] Step 15: The air conditioner continues to run.

[0083] Optionally, after the air conditioner has been running for t minutes in the current high-temperature environment, the system can be further adjusted to improve cooling comfort and system reliability. Specific control methods are as follows: Figure 3 As shown:

[0084] Step 1: After the air conditioner runs continuously for t minutes;

[0085] Step 2: Detect the current exhaust temperature or external pipe temperature;

[0086] Step 3: Determine the difference between the current exhaust temperature and the target exhaust temperature corresponding to the current outdoor ambient temperature (or the difference between the current external pipe temperature and the target external pipe temperature T). 0外管 The difference, where the target external pipe temperature and the target exhaust temperature are the same (determined based on the range of outdoor ambient temperature), if T is satisfied... 排 -T 排max ≤ΔT2 (or T) 外管 -T 0外管 If ≤ΔT2), then proceed to step 4; otherwise, proceed to step 5.

[0087] Step 4: The compressor increases its frequency at a rate of 1Hz / 5min;

[0088] Step 5: After step 2, if ΔT2 < T 排 -T 排max ≤ΔT3 (or ΔT2 < T) 外管 -T 0外管 If ≤ΔT3), then proceed to step 7; otherwise, determine T. 排 -T排max ≤0, otherwise reduce the compressor frequency, where 0>ΔT3>ΔT2;

[0089] Step 6: After step 4, continue to determine T. 排 -T 排max ≤ΔT2 (or T) 外管 -T 0外管 If ≤ΔT2), proceed to step 4; otherwise, proceed to step 8.

[0090] Step 7: The electronic expansion valve opens at a rate of 1p / min;

[0091] Step 8: The electronic expansion valve opens at a rate of 2 p / min;

[0092] Step 9: Determine if the current opening range of the electronic expansion valve is P0 < P < P1. If yes, it indicates that the opening is within a reasonable range, and proceed to step 10; otherwise, proceed to step 12. Here, P0 is the opening during the first stage of stable operation of the air conditioner. Under normal circumstances, P < P0 will not occur. If P > P1, it indicates that the opening is too large, which may result in insufficient throttling and affect cooling comfort.

[0093] Step 10: Obtain the current inner tube temperature T 内管1 ;

[0094] Step 11: Determine the current T 内管1 Compared with the inner tube temperature T during the first stage of stable operation 内管 The size of T, if T 内管1 -T 内管 If the value is ≥ΔT4, it indicates that the inner pipe temperature has increased and the outlet air temperature has decreased after adjustment, resulting in a decline in cooling comfort. In this case, proceed to step 12. If T... 内管1 -T 内管 If <ΔT4, it indicates that the current pipe temperature has decreased and the cooling effect has increased, so proceed to step 13;

[0095] Step 12: The electronic expansion valve opening is restored to P0;

[0096] Step 13: The air conditioner continues to operate in its current state.

[0097] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0098] According to another aspect of the embodiments of this application, an air conditioning control device is also provided, such as... Figure 4 As shown, it includes:

[0099] The first control module 402 is used to control the compressor to run at the target frequency and the outdoor fan to run at the target speed when the outdoor ambient temperature is detected to be greater than or equal to the target temperature.

[0100] The second control module 404 is used to increase the speed of the outdoor fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature.

[0101] The third control module 406 is used to reduce the speed of the indoor fan when the first temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed.

[0102] Optionally, in existing air conditioning control methods, when the outdoor ambient temperature reaches a certain high temperature, the air conditioner is under extreme load, and poor heat dissipation of the outdoor unit causes the air conditioner to shut down for protection, thus failing to meet the user's cooling needs. In this embodiment, however, the speeds of the indoor and outdoor fans are adjusted by detecting parameters such as the compressor's exhaust temperature and the inner pipe temperature. When the outdoor ambient temperature is greater than or equal to a preset target temperature, i.e., when the outdoor ambient temperature reaches a certain high temperature, the air conditioner's compressor is controlled to operate at a preset target frequency, and the air conditioner's outdoor fan operates at a preset target speed. The temperature range of the outdoor ambient temperature is determined, with each temperature range corresponding to a first temperature. For example, if the outdoor ambient temperature is [30, 36), then the corresponding first temperature is T. a If the outdoor ambient temperature is [36, 42), then the corresponding first temperature is T. b If the outdoor ambient temperature is [42, 48), then the corresponding first temperature is T. cSimultaneously, the compressor's exhaust temperature is monitored. When the exhaust temperature is greater than or equal to a first temperature, the outdoor fan speed is increased. Increased fan speed enhances the heat exchanger's cooling capacity, lowering the exhaust temperature. The compressor's exhaust temperature and outdoor fan speed are continuously monitored. When the compressor's exhaust temperature is lower than the first temperature or the outdoor fan speed reaches its maximum, the outdoor fan operates at its current speed. The first temperature difference between the indoor ambient temperature and the air conditioner's internal pipe temperature is monitored. If this first temperature difference is less than or equal to a first threshold, it indicates that the current internal pipe temperature is too high, resulting in a relatively high air outlet temperature. The air conditioner's indoor fan speed is then reduced, and the internal pipe temperature and fan speed are continuously monitored. When the first temperature difference exceeds the first threshold or the indoor fan speed reaches its minimum, the indoor fan operates at its current speed. Reducing the internal fan speed lowers the exhaust temperature, improving cooling comfort, and also lowers the internal pipe temperature, thereby reducing system high pressure and improving system reliability. This allows the air conditioner to continue cooling normally even in extremely high outdoor temperatures, meeting users' cooling needs and raising the upper limit of outdoor temperature for reliable air conditioner operation. Ultimately, this solves the technical problem of air conditioners being unable to cool in extremely high outdoor temperatures.

[0103] As an optional example, the second control module includes:

[0104] The acquisition unit is used to acquire the outdoor ambient temperature and determine the temperature range within which the outdoor ambient temperature falls.

[0105] The first determining unit is used to determine a first temperature corresponding to the temperature range based on the temperature range.

[0106] The second determining unit is used to determine the target rate corresponding to the temperature range based on the temperature range.

[0107] If the compressor's exhaust temperature is detected to be greater than or equal to a first temperature, the outdoor fan is controlled to increase its speed at a target rate until the exhaust temperature is less than the first temperature or the outdoor fan's speed reaches its maximum speed.

[0108] Optionally, in existing air conditioning control methods, when the outdoor ambient temperature reaches a certain high temperature, the air conditioner is under extreme load, and poor heat dissipation of the outdoor unit causes the air conditioner to shut down for protection, thus failing to meet the user's cooling needs. In this embodiment, the temperature range of the outdoor ambient temperature is determined, with each temperature range corresponding to a first temperature and an increase rate of the outdoor fan. For example, if the outdoor ambient temperature is [30, 36), then the corresponding first temperature is T. a The rate of increase is V a If the outdoor ambient temperature is [36, 42), then the corresponding first temperature is T. b The rate of increase is V bIf the outdoor ambient temperature is [42, 48), then the corresponding first temperature is T. c The rate of increase is V c When the outdoor ambient temperature is determined to be within the range of [42, 48), and the exhaust temperature is greater than or equal to T... c At that time, the speed of the outdoor fan was increased, and the outdoor fan operated at V... c Increase the engine speed until the exhaust temperature is less than T. c Alternatively, the outdoor fan speed can be increased to its maximum speed. This can enhance the heat dissipation capacity of the outdoor unit's heat exchanger and reduce the exhaust temperature.

[0109] As an optional example, the above-described apparatus further includes:

[0110] The fourth control module is used to increase the compressor frequency after the first temperature difference is greater than the first threshold or the speed of the internal fan is equal to the minimum speed, and when the second temperature difference between the exhaust temperature and the first temperature is less than or equal to the second threshold, or the third temperature difference between the external pipe temperature and the second temperature is less than or equal to the second threshold, until the second temperature difference is greater than the second threshold or the third temperature difference is greater than the second threshold. The second temperature is determined based on the outdoor ambient temperature.

[0111] The fifth control module is used to control the electronic expansion valve to open at the first speed;

[0112] The acquisition module is used to acquire the inner tube temperature when the current opening degree of the electronic expansion valve is detected to be greater than or equal to the first opening degree and less than or equal to the second opening degree, wherein the first opening degree is the opening degree when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed, and the second opening degree is greater than the first opening degree.

[0113] The sixth control module is used to control the electronic expansion valve to operate at a first opening degree when the fourth temperature difference between the inner tube temperature and the third temperature is detected to be greater than or equal to a third threshold. The third temperature is the temperature of the inner tube when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0114] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference from the first temperature that is less than or equal to the second threshold, or when the external pipe temperature rises to a third temperature difference from the second temperature that is less than or equal to the second threshold, wherein the second temperature, like the first temperature, is determined based on the temperature range of the outdoor ambient temperature. Increase the compressor frequency until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold. Control the electronic expansion valve to open at a higher first speed. Simultaneously monitor the opening degree of the electronic expansion valve. When the opening degree of the electronic expansion valve is greater than or equal to the first opening degree and less than or equal to the second opening degree, the opening degree is within a reasonable range. Detect the current inner pipe temperature. When the fourth temperature difference between the inner pipe temperature and the third temperature is greater than or equal to the third threshold, it indicates that the inner pipe temperature has increased after adjustment, the outlet air temperature has decreased, and the cooling comfort has declined. Control the electronic expansion valve to return to the first opening degree, and the air conditioner continues to operate in the current state.

[0115] As an optional example, the fourth control module includes:

[0116] The third determining unit is used to determine the compressor's boost rate based on the temperature range of the outdoor ambient temperature.

[0117] Optionally, in this embodiment, the compressor's boost rate is determined based on the temperature range of the outdoor ambient temperature, with one rate corresponding to one temperature range.

[0118] As an optional example, the above-described apparatus further includes:

[0119] The seventh control module is used to control the electronic expansion valve to operate at the first opening degree after it is detected that the current opening degree of the electronic expansion valve is greater than the second opening degree.

[0120] Optionally, in this embodiment, when the current opening degree of the electronic expansion valve is detected to be greater than the second opening degree, it indicates that the opening degree is too large at this time, which may result in a small air conditioning flow and affect the cooling comfort. In this case, the electronic expansion valve is controlled to return to the first opening degree.

[0121] As an optional example, the above-described apparatus further includes:

[0122] The eighth control module is used to control the electronic expansion valve to open at a second speed after the first temperature difference is greater than the first threshold or the internal fan speed is equal to the minimum speed, and after detecting that the second temperature difference is less than or equal to the fourth threshold and greater than the second threshold, or the third temperature difference is less than or equal to the fourth threshold and greater than the second threshold, wherein the fourth threshold is greater than the second threshold and less than zero, and the second speed is less than the first speed.

[0123] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference from the first temperature that is less than or equal to the fourth threshold and greater than the second threshold, or when the external pipe temperature rises to a third temperature difference from the second temperature that is less than or equal to the fourth threshold and greater than the second threshold, the electronic expansion valve is controlled to open at a lower second speed.

[0124] As an optional example, the above-described apparatus further includes:

[0125] The ninth control module is used to reduce the compressor frequency after detecting a second temperature difference greater than or equal to zero or a third temperature difference greater than or equal to zero, once the first temperature difference is greater than or equal to a first threshold or the internal fan speed is equal to the minimum speed.

[0126] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference greater than or equal to zero from the first temperature, or the external pipe temperature rises to a third temperature difference greater than or equal to zero from the second temperature, the compressor frequency is first reduced until the second temperature difference is less than zero or the third temperature difference is less than zero.

[0127] For other examples of this embodiment, please refer to the examples above, which will not be repeated here.

[0128] According to another aspect of the embodiments of this application, an air conditioner is also provided, such as... Figure 5 As shown, it includes:

[0129] The first control module 502 is used to control the compressor to run at the target frequency and the outdoor fan to run at the target speed when the outdoor ambient temperature is detected to be greater than or equal to the target temperature.

[0130] The second control module 504 is used to increase the speed of the outdoor fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature.

[0131] The third control module 506 is used to reduce the speed of the indoor fan when the first temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed.

[0132] Optionally, in existing air conditioning control methods, when the outdoor ambient temperature reaches a certain high temperature, the air conditioner is under extreme load, and poor heat dissipation of the outdoor unit causes the air conditioner to shut down for protection, thus failing to meet the user's cooling needs. In this embodiment, however, the speeds of the indoor and outdoor fans are adjusted by detecting parameters such as the compressor's exhaust temperature and the inner pipe temperature. When the outdoor ambient temperature is greater than or equal to a preset target temperature, i.e., when the outdoor ambient temperature reaches a certain high temperature, the air conditioner's compressor is controlled to operate at a preset target frequency, and the air conditioner's outdoor fan operates at a preset target speed. The temperature range of the outdoor ambient temperature is determined, with each temperature range corresponding to a first temperature. For example, if the outdoor ambient temperature is [30, 36), then the corresponding first temperature is T. a If the outdoor ambient temperature is [36, 42), then the corresponding first temperature is T. b If the outdoor ambient temperature is [42, 48), then the corresponding first temperature is T. cSimultaneously, the compressor's exhaust temperature is monitored. When the exhaust temperature is greater than or equal to a first temperature, the outdoor fan speed is increased. Increased fan speed enhances the heat exchanger's cooling capacity, lowering the exhaust temperature. The compressor's exhaust temperature and outdoor fan speed are continuously monitored. When the compressor's exhaust temperature is lower than the first temperature or the outdoor fan speed reaches its maximum, the outdoor fan operates at its current speed. The first temperature difference between the indoor ambient temperature and the air conditioner's internal pipe temperature is monitored. If this first temperature difference is less than or equal to a first threshold, it indicates that the current internal pipe temperature is too high, resulting in a relatively high air outlet temperature. The air conditioner's indoor fan speed is then reduced, and the internal pipe temperature and fan speed are continuously monitored. When the first temperature difference exceeds the first threshold or the indoor fan speed reaches its minimum, the indoor fan operates at its current speed. Reducing the internal fan speed lowers the exhaust temperature, improving cooling comfort, and also lowers the internal pipe temperature, thereby reducing system high pressure and improving system reliability. This allows the air conditioner to continue cooling normally even in extremely high outdoor temperatures, meeting users' cooling needs and raising the upper limit of outdoor temperature for reliable air conditioner operation. Ultimately, this solves the technical problem of air conditioners being unable to cool in extremely high outdoor temperatures.

[0133] As an optional example, the second control module includes:

[0134] The acquisition unit is used to acquire the outdoor ambient temperature and determine the temperature range within which the outdoor ambient temperature falls.

[0135] The first determining unit is used to determine a first temperature corresponding to the temperature range based on the temperature range.

[0136] The second determining unit is used to determine the target rate corresponding to the temperature range based on the temperature range.

[0137] If the compressor's exhaust temperature is detected to be greater than or equal to a first temperature, the outdoor fan is controlled to increase its speed at a target rate until the exhaust temperature is less than the first temperature or the outdoor fan's speed reaches its maximum speed.

[0138] Optionally, in existing air conditioning control methods, when the outdoor ambient temperature reaches a certain high temperature, the air conditioner is under extreme load, and poor heat dissipation of the outdoor unit causes the air conditioner to shut down for protection, thus failing to meet the user's cooling needs. In this embodiment, the temperature range of the outdoor ambient temperature is determined, with each temperature range corresponding to a first temperature and an increase rate of the outdoor fan. For example, if the outdoor ambient temperature is [30, 36), then the corresponding first temperature is T. a The rate of increase is V a If the outdoor ambient temperature is [36, 42), then the corresponding first temperature is T. b The rate of increase is V bIf the outdoor ambient temperature is [42, 48), then the corresponding first temperature is T. c The rate of increase is V c When the outdoor ambient temperature is determined to be within the range of [42, 48), and the exhaust temperature is greater than or equal to T... c At that time, the speed of the outdoor fan was increased, and the outdoor fan operated at V... c Increase the engine speed until the exhaust temperature is less than T. c Alternatively, the outdoor fan speed can be increased to its maximum speed. This can enhance the heat dissipation capacity of the outdoor unit's heat exchanger and reduce the exhaust temperature.

[0139] As an optional example, the above-mentioned air conditioner also includes:

[0140] The fourth control module is used to increase the compressor frequency after the first temperature difference is greater than the first threshold or the speed of the internal fan is equal to the minimum speed, and when the second temperature difference between the exhaust temperature and the first temperature is less than or equal to the second threshold, or the third temperature difference between the external pipe temperature and the second temperature is less than or equal to the second threshold, until the second temperature difference is greater than the second threshold or the third temperature difference is greater than the second threshold. The second temperature is determined based on the outdoor ambient temperature.

[0141] The fifth control module is used to control the electronic expansion valve to open at the first speed;

[0142] The acquisition module is used to acquire the inner tube temperature when the current opening degree of the electronic expansion valve is detected to be greater than or equal to the first opening degree and less than or equal to the second opening degree, wherein the first opening degree is the opening degree when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed, and the second opening degree is greater than the first opening degree.

[0143] The sixth control module is used to control the electronic expansion valve to operate at a first opening degree when the fourth temperature difference between the inner tube temperature and the third temperature is detected to be greater than or equal to a third threshold. The third temperature is the temperature of the inner tube when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0144] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference from the first temperature that is less than or equal to the second threshold, or when the external pipe temperature rises to a third temperature difference from the second temperature that is less than or equal to the second threshold, wherein the second temperature, like the first temperature, is determined based on the temperature range of the outdoor ambient temperature. Increase the compressor frequency until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold. Control the electronic expansion valve to open at a higher first speed. Simultaneously monitor the opening degree of the electronic expansion valve. When the opening degree of the electronic expansion valve is greater than or equal to the first opening degree and less than or equal to the second opening degree, the opening degree is within a reasonable range. Detect the current inner pipe temperature. When the fourth temperature difference between the inner pipe temperature and the third temperature is greater than or equal to the third threshold, it indicates that the inner pipe temperature has increased after adjustment, the outlet air temperature has decreased, and the cooling comfort has declined. Control the electronic expansion valve to return to the first opening degree, and the air conditioner continues to operate in the current state.

[0145] As an optional example, the fourth control module includes:

[0146] The third determining unit is used to determine the compressor's boost rate based on the temperature range of the outdoor ambient temperature.

[0147] Optionally, in this embodiment, the compressor's boost rate is determined based on the temperature range of the outdoor ambient temperature, with one rate corresponding to one temperature range.

[0148] As an optional example, the above-mentioned air conditioner also includes:

[0149] The seventh control module is used to control the electronic expansion valve to operate at the first opening degree after it is detected that the current opening degree of the electronic expansion valve is greater than the second opening degree.

[0150] Optionally, in this embodiment, when the current opening degree of the electronic expansion valve is detected to be greater than the second opening degree, it indicates that the opening degree is too large at this time, which may result in a small air conditioning flow and affect the cooling comfort. In this case, the electronic expansion valve is controlled to return to the first opening degree.

[0151] As an optional example, the above-mentioned air conditioner also includes:

[0152] The eighth control module is used to control the electronic expansion valve to open at a second speed after the first temperature difference is greater than the first threshold or the internal fan speed is equal to the minimum speed, and after detecting that the second temperature difference is less than or equal to the fourth threshold and greater than the second threshold, or the third temperature difference is less than or equal to the fourth threshold and greater than the second threshold, wherein the fourth threshold is greater than the second threshold and less than zero, and the second speed is less than the first speed.

[0153] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference from the first temperature that is less than or equal to the fourth threshold and greater than the second threshold, or when the external pipe temperature rises to a third temperature difference from the second temperature that is less than or equal to the fourth threshold and greater than the second threshold, the electronic expansion valve is controlled to open at a lower second speed.

[0154] As an optional example, the above-mentioned air conditioner also includes:

[0155] The ninth control module is used to reduce the compressor frequency after detecting a second temperature difference greater than or equal to zero or a third temperature difference greater than or equal to zero, once the first temperature difference is greater than or equal to a first threshold or the internal fan speed is equal to the minimum speed.

[0156] Optionally, after the first temperature difference exceeds the first threshold or the internal fan speed equals the minimum speed, the opening degree of the air conditioner's electronic expansion valve is the first opening degree, and the internal pipe temperature is the third temperature. After operating in this state for a period of time, the exhaust temperature, internal pipe temperature, and external pipe temperature will continue to rise. To improve the cooling comfort and reliability of the air conditioner, adjustments can be made. In this embodiment, when the exhaust temperature rises to a second temperature difference greater than or equal to zero from the first temperature, or the external pipe temperature rises to a third temperature difference greater than or equal to zero from the second temperature, the compressor frequency is first reduced until the second temperature difference is less than zero or the third temperature difference is less than zero.

[0157] For other examples of this embodiment, please refer to the examples above, which will not be repeated here.

[0158] Figure 6 This is a schematic diagram of an optional electronic device according to an embodiment of this application, such as... Figure 6As shown, it includes a processor 602, a communication interface 604, a memory 606, and a communication bus 608. The processor 602, communication interface 604, and memory 606 communicate with each other via the communication bus 608.

[0159] Memory 606 is used to store computer programs;

[0160] When processor 602 executes a computer program stored in memory 606, it performs the following steps:

[0161] When the outdoor ambient temperature is detected to be greater than or equal to the target temperature, the compressor is controlled to run at the target frequency and the outdoor fan is controlled to run at the target speed.

[0162] If the compressor's exhaust temperature is detected to be greater than or equal to a first temperature, the speed of the outdoor fan is increased until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed. The first temperature is determined based on the outdoor ambient temperature.

[0163] If the temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to a first threshold, the speed of the inner fan is reduced until the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed.

[0164] Optionally, in this embodiment, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 The symbol is represented by a single thick line, but this does not indicate that there is only one bus or one type of bus. The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0165] The memory may include RAM, or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0166] As an example, the memory 606 described above may include, but is not limited to, the first control module 402, the second control module 404, and the third control module 406 of the air conditioner control device. Furthermore, it may include, but is not limited to, other module units of the air conditioner control device, which will not be elaborated upon in this example.

[0167] The processors mentioned above can be general-purpose processors, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; they can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0168] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0169] Those skilled in the art will understand that Figure 6 The structure shown is for illustrative purposes only. The device implementing the above-described air conditioning control method can be a terminal device, such as a smartphone (e.g., an Android phone, an iOS phone), a tablet computer, a PDA, a mobile internet device (MID), a PAD, or other terminal devices. Figure 6 This does not limit the structure of the aforementioned electronic devices. For example, the electronic device may also include components that are more... Figure 6 The more or fewer components shown (such as network interfaces, display devices, etc.), or having the same Figure 6 The different configurations shown.

[0170] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, ROM, RAM, disk or optical disk, etc.

[0171] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer program, which, when executed by a processor, performs the steps in the above-described air conditioner control method.

[0172] Optionally, in this embodiment, those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0173] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0174] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0175] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0176] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0177] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0178] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0179] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for controlling an air conditioner, characterized in that, include: When the outdoor ambient temperature is detected to be greater than or equal to the target temperature, the compressor is controlled to run at the target frequency and the outdoor fan is controlled to run at the target speed. If the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, the rotational speed of the outdoor fan is increased until the exhaust temperature is less than the first temperature or the rotational speed of the outdoor fan is equal to the maximum rotational speed, wherein the first temperature is determined based on the outdoor ambient temperature; If the temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to a first threshold, the speed of the inner fan is reduced until the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed. After the first temperature difference is greater than the first threshold or the rotational speed of the internal fan is equal to the minimum rotational speed, the method further includes: If the second temperature difference between the exhaust temperature and the first temperature is less than or equal to a second threshold, or the third temperature difference between the external pipe temperature and the second temperature is less than or equal to the second threshold, the frequency of the compressor is increased until the second temperature difference is greater than the second threshold, or the third temperature difference is greater than the second threshold, wherein the second temperature is determined based on the outdoor ambient temperature; Control the electronic expansion valve to open at the first speed; When the current opening of the electronic expansion valve is detected to be greater than or equal to the first opening and less than or equal to the second opening, the inner tube temperature is obtained, wherein the first opening is the opening when the first temperature difference is greater than the first threshold or the speed of the inner fan is equal to the minimum speed, and the second opening is greater than the first opening. If the temperature difference between the inner tube temperature and the third temperature is detected to be greater than or equal to a third threshold, the electronic expansion valve is controlled to operate at the first opening degree, wherein the third temperature is the inner tube temperature when the first temperature difference is greater than the first threshold or the rotational speed of the inner fan is equal to the minimum rotational speed.

2. The method according to claim 1, characterized in that, The step of increasing the speed of the external fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the external fan reaches its maximum speed, includes: Obtain the outdoor ambient temperature and determine the temperature range within which the outdoor ambient temperature falls; Determine the first temperature corresponding to the temperature range based on the temperature range; Determine the target rate corresponding to the temperature range based on the temperature range; If the exhaust temperature of the compressor is detected to be greater than or equal to the first temperature, the external fan is controlled to increase its speed at the target rate until the exhaust temperature is less than the first temperature or the speed of the external fan reaches its maximum speed.

3. The method according to claim 1, characterized in that, Increasing the frequency of the compressor includes: The compressor's boost rate is determined based on the temperature range of the outdoor ambient temperature.

4. The method according to claim 1, characterized in that, After controlling the electronic expansion valve to open at a first speed, the method further includes: If the current opening of the electronic expansion valve is detected to be greater than the second opening, the electronic expansion valve is controlled to operate at the first opening.

5. The method according to claim 1, characterized in that, After the first temperature difference is greater than the first threshold or the rotational speed of the internal fan is equal to the minimum rotational speed, the method further includes: If the second temperature difference is detected to be less than or equal to the fourth threshold and greater than the second threshold, or the third temperature difference is less than or equal to the fourth threshold and greater than the second threshold, the electronic expansion valve is controlled to open at a second speed, wherein the fourth threshold is greater than the second threshold and less than zero, and the second speed is less than the first speed.

6. The method according to claim 1, characterized in that, After the first temperature difference is greater than the first threshold or the rotational speed of the internal fan is equal to the minimum rotational speed, the method further includes: If the second temperature difference is detected to be greater than or equal to zero, or the third temperature difference is detected to be greater than or equal to zero, the frequency of the compressor is reduced until the second temperature difference is less than zero or the third temperature difference is less than zero.

7. An air conditioner control device for implementing the air conditioner control method as described in any one of claims 1 to 6, characterized in that, include: The first control module is used to control the compressor to run at the target frequency and the outdoor fan to run at the target speed when the outdoor ambient temperature is detected to be greater than or equal to the target temperature. The second control module is used to increase the speed of the outdoor fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature; The third control module is used to reduce the speed of the indoor fan when the detected temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed.

8. An air conditioner for implementing the control method of the air conditioner as described in any one of claims 1 to 6, characterized in that, include: The first control module is used to control the compressor to run at the target frequency and the outdoor fan to run at the target speed when the outdoor ambient temperature is detected to be greater than or equal to the target temperature. The second control module is used to increase the speed of the outdoor fan when the exhaust temperature of the compressor is detected to be greater than or equal to a first temperature, until the exhaust temperature is less than the first temperature or the speed of the outdoor fan is equal to the maximum speed, wherein the first temperature is determined based on the outdoor ambient temperature; The third control module is used to reduce the speed of the indoor fan when the detected temperature difference between the indoor ambient temperature and the inner pipe temperature is less than or equal to a first threshold, until the first temperature difference is greater than the first threshold or the speed of the indoor fan is equal to the minimum speed.

9. A computer-readable storage medium storing a computer program, characterized in that, The computer program is executed by the processor to perform the method described in any one of claims 1 to 6.

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