Method and device for self-cleaning of an air conditioner, air conditioner

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a method for self-cleaning of an air conditioner, which comprises the following steps: determining the temperature difference K between an evaporator coil and an evaporator fin; and adjusting the frequency and exhaust temperature of a compressor according to the temperature difference K, so that the temperature difference K is within a first preset temperature difference interval. In the self-cleaning process of the air conditioner, the frequency and exhaust temperature of the compressor are adjusted according to the temperature difference K between the evaporator coil and the evaporator fin, so that the temperature drop or rise speed of the refrigerant in the evaporator is prevented from being too fast, and the temperature difference between the evaporator coil and the evaporator fin is kept within the first preset temperature difference interval, thereby avoiding the generation of thermal expansion and contraction sound caused by the too large temperature difference between the evaporator coil and the evaporator fin. The application further discloses a device for self-cleaning of an air conditioner and an air conditioner.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a method and apparatus for self-cleaning an air conditioner, and an air conditioner. Background Technology

[0002] Currently, in order to solve the problems of long cleaning cycles and high labor costs caused by manual cleaning of air conditioners, the demand for self-cleaning air conditioners to replace manual cleaning has emerged.

[0003] A self-cleaning control method for an air conditioner includes the following steps: controlling the air conditioner to enter self-cleaning mode; detecting the current outdoor ambient temperature T. 外 Or the current external coil temperature T 外盘 And the current indoor ambient temperature T 内 And based on the current outdoor ambient temperature T 外 Or the current external coil temperature T 外盘 And the current indoor ambient temperature T 内 Set the first preset temperature T of the internal coil. 内盘1 and the second preset temperature T of the inner coil 内盘2 Inner coil temperature T 内盘 According to the first preset temperature T of the inner coil 内盘1 After operation, the internal fan is stopped, the cooling rate α of the internal coil is calculated, and the compressor frequency and the opening of the electronic expansion valve are adjusted according to the cooling rate α. When the internal coil temperature T... 内盘 The first preset temperature T of the inner coil is reached 内盘1 Afterwards, the internal coil temperature T 内盘 Continue according to the second preset temperature T of the inner coil 内盘2 The system operates by controlling the external fan to stop and adjusting the opening of the electronic expansion valve to its maximum. It also calculates the heating rate β of the internal coil and adjusts the speed of the internal fan based on the heating rate β.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] During the self-cleaning process, air conditioners are prone to making sounds of thermal expansion and contraction. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a method and apparatus for self-cleaning an air conditioner, and an air conditioner, to avoid the air conditioner emitting thermal expansion and contraction noises during the self-cleaning process.

[0008] In some embodiments, the method includes:

[0009] Determine the temperature difference K between the evaporator coil and the evaporator fins;

[0010] Adjust the compressor frequency and exhaust temperature according to K to keep K within the first preset temperature difference range.

[0011] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for self-cleaning an air conditioner when the program instructions are executed.

[0012] In some embodiments, the air conditioner includes the above-described device for self-cleaning the air conditioner.

[0013] The method, apparatus, and air conditioner for self-cleaning of air conditioners provided in this disclosure can achieve the following technical effects:

[0014] During the self-cleaning process of the air conditioner, the compressor frequency and exhaust temperature are adjusted according to the temperature difference K between the evaporator coil and the evaporator fins. This prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus keeping the temperature difference between the evaporator coil and the evaporator fins within the first preset temperature difference range. This avoids excessive temperature differences between the evaporator coil and the evaporator fins, which could cause thermal expansion and contraction noises.

[0015] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0017] Figure 1 This is a partial structural schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0018] Figure 2 This is a partial structural schematic diagram of another air conditioner provided in an embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of a method for self-cleaning an air conditioner provided in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of another method for self-cleaning an air conditioner provided in an embodiment of this disclosure;

[0021] Figure 5This is a schematic diagram of another method for self-cleaning an air conditioner provided in an embodiment of this disclosure;

[0022] Figure 6 This is a schematic diagram of another method for self-cleaning an air conditioner provided in an embodiment of this disclosure;

[0023] Figure 7 This is a schematic diagram of another method for self-cleaning an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 8 This is a schematic diagram of a device for self-cleaning an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0025] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0027] Unless otherwise stated, the term "multiple" means two or more.

[0028] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0029] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0030] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0031] Combination Figure 1 , Figure 2As shown, this embodiment of the present disclosure provides an air conditioner, including an evaporator 5, a cross-flow fan 6, an evaporator temperature sensor 4, a blower 6, an electric auxiliary heating device 2, a stepper motor 3, and a guide plate 7. The evaporator has an air inlet 1 at its top. The evaporator temperature sensor 4 is disposed on the fins of the evaporator 5. The electric auxiliary heating device 2 is disposed below the evaporator 5. The blower 6 is disposed below the electric auxiliary heating device 2. The stepper motor 3 is connected to the guide plate 7 and is disposed below the evaporator 5 and the blower 6.

[0032] Optionally, the evaporator 5 includes a distribution pipe 7, an evaporator coil temperature sensor 8, and inlet / outlet liquid pipes 9. The evaporator coil temperature sensor 8 is located on one side of the distribution pipe 7 and is used to detect the evaporator coil temperature. The distribution pipe 7 is connected to the inlet / outlet liquid pipes 9.

[0033] Combination Figure 3 As shown in the embodiments of this disclosure, a method for self-cleaning an air conditioner is provided, comprising:

[0034] S301, the air conditioner determines the temperature difference K between the evaporator coil and the evaporator fins.

[0035] S302, the air conditioner adjusts the compressor frequency and exhaust temperature according to K so that K is within the first preset temperature difference range.

[0036] The self-cleaning method for air conditioners provided in this embodiment can adjust the compressor frequency and exhaust temperature according to the temperature difference K between the evaporator coil and the evaporator fins during the self-cleaning process. This prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thereby keeping the temperature difference between the evaporator coil and the evaporator fins within a first preset temperature difference range. This avoids excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0037] Optionally, the air conditioner adjusts the compressor frequency and discharge temperature according to K, including: when K is in the second preset temperature difference range (-∞, K1), the air conditioner increases the compressor frequency while maintaining the compressor discharge temperature unchanged. Alternatively, when K is in the first preset temperature difference range (K1, K2), the air conditioner maintains the compressor frequency and discharge temperature unchanged. Alternatively, when K is in the third preset temperature difference range (K2, +∞), the air conditioner decreases the compressor frequency and discharge temperature according to K. Wherein, K1 < K2. In this way, the compressor frequency and discharge temperature can be adjusted more effectively according to the size of the temperature difference K between the evaporator coil and the evaporator fins, thereby better preventing the refrigerant temperature in the evaporator from dropping or rising too quickly, and thus keeping the temperature difference between the evaporator coil and the evaporator fins within the first preset temperature difference range, avoiding excessive temperature difference between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noise.

[0038] Optionally, when K is within the second preset temperature difference range (-∞, K1), the air conditioner increases the compressor frequency, including: when K is within the second preset temperature difference range (-∞, K1), the air conditioner adjusts the speed v at a first frequency. f1 Increase the compressor frequency. This way, by controlling the compressor frequency to decrease at the first frequency adjustment speed, the compressor frequency and exhaust temperature can be better adjusted according to the temperature difference K between the evaporator coil and the evaporator fins. This better prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus keeping the temperature difference between the evaporator coil and the evaporator fins within the first preset temperature difference range. This avoids excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0039] Optionally, the air conditioner reduces the compressor frequency and exhaust temperature according to K, including: when K is within a fourth preset temperature difference range (K2, K3), the air conditioner adjusts the speed v at a first frequency. f1 Reduce the compressor frequency and adjust the speed v at the first temperature. T1 Lower the compressor's discharge temperature. Alternatively, when K is within the fifth preset temperature difference range (K3, K4), the air conditioner adjusts the speed v at the second frequency. f2 Reduce the compressor frequency and adjust the speed v according to the second temperature. T2 Lower the compressor's discharge temperature. Alternatively, when K is within the sixth preset temperature difference range (K4, +∞), the air conditioner adjusts the speed v at the third frequency. f3 Reduce the compressor frequency and adjust the speed v using the third temperature regulation setting. T3 Reduce the compressor's discharge temperature. Where K2 < K3 < K4, v f1 ≤v f2 ≤v f3 v T1 ≤v T2 ≤v T3 In this way, when the temperature difference between the evaporator coil and the evaporator fins is within the third preset temperature difference range, the compressor frequency and exhaust temperature are controlled to decrease at different rates according to the K value. This allows for better adjustment of the compressor frequency and exhaust temperature based on the magnitude of the temperature difference K between the evaporator coil and the evaporator fins, thereby better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. Consequently, the temperature difference between the evaporator coil and the evaporator fins is kept within the first preset temperature difference range, avoiding excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0040] Optionally, the value of K1 can range from -1℃ to 1℃. Specifically, the value of K1 can be -1℃, 0℃, or 1℃. By limiting the value of K1, the range of the first preset temperature difference interval and the second preset temperature difference interval can be better determined. This allows for better adjustment of the compressor frequency and exhaust temperature based on the temperature difference K between the evaporator coil and the evaporator fins, thereby better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. Consequently, the temperature difference between the evaporator coil and the evaporator fins is kept within the first preset temperature difference interval, avoiding excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0041] Optionally, the value of K2 can range from [2℃ to 4℃]. Specifically, the value of K2 can be 2℃, 3℃, or 4℃. In this way, by limiting the value of K2, the range of the first preset temperature difference interval, the third preset temperature difference interval, and the fourth preset temperature difference interval can be better determined. This allows for better adjustment of the compressor frequency and exhaust temperature based on the temperature difference K between the evaporator coil and the evaporator fins, thereby better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. Consequently, the temperature difference between the evaporator coil and the evaporator fins is kept within the first preset temperature difference interval, avoiding excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0042] Optionally, the value of K3 can range from [5℃ to 7℃]. Specifically, the value of K3 can be 5℃, 6℃, or 7℃. In this way, by limiting the value of K3, the range of the fourth and fifth preset temperature difference intervals can be better determined. This allows for better control of the compressor frequency and discharge temperature at different rates based on the K value, and better adjustment of the compressor frequency and discharge temperature based on the temperature difference K between the evaporator coil and evaporator fins. This better prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus keeping the temperature difference between the evaporator coil and evaporator fins within the first preset temperature difference interval and avoiding excessive temperature differences between the evaporator coil and evaporator fins that could cause thermal expansion and contraction noises.

[0043] Optionally, the value of K4 can be in the range of [8℃, 10℃]. Specifically, the value of K4 can be 8℃, 9℃, or 10℃. In this way, by limiting the value of K3, the range of the fifth preset temperature difference interval and the sixth preset temperature difference interval can be better determined. This allows for better control of the compressor frequency and discharge temperature at different rates based on the K value, and better adjustment of the compressor frequency and discharge temperature based on the temperature difference K between the evaporator coil and the evaporator fins. This better prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thereby keeping the temperature difference between the evaporator coil and the evaporator fins within the first preset temperature difference interval and avoiding excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0044] Optionally, v f1 The value range is [1Hz / 10s, 2Hz / 10s]. Specifically, v f1 The value of v can be 1Hz / 10s, 1.5Hz / 10s, or 2Hz / 10s. Thus, by limiting v... f1 The value of K allows for a better determination of the first frequency adjustment speed, thereby enabling better control of the compressor frequency to decrease at different speeds based on the K value. It also allows for better adjustment of the compressor frequency and exhaust temperature based on the temperature difference K between the evaporator coil and evaporator fins, thus better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. This keeps the temperature difference between the evaporator coil and evaporator fins within the first preset temperature difference range, preventing excessive temperature differences between the evaporator coil and evaporator fins from causing thermal expansion and contraction noises.

[0045] Optionally, v f2 The value range is [2Hz / 10s, 3Hz / 10s]. Specifically, v f2 The value of v can be 2Hz / 10s, 2.5Hz / 10s, or 2Hz / 10s. Thus, by limiting v... f2 The value of K allows for better determination of the second frequency adjustment speed, thereby better controlling the compressor frequency to decrease at different speeds based on the K value. It also allows for better adjustment of the compressor frequency and exhaust temperature based on the temperature difference K between the evaporator coil and evaporator fins, thus better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. This keeps the temperature difference between the evaporator coil and evaporator fins within the first preset temperature difference range, avoiding excessive temperature differences between the evaporator coil and evaporator fins that could cause thermal expansion and contraction noises.

[0046] Optionally, v f3 The value range is [3Hz / 10s, 4Hz / 10s]. Specifically, v f3 The value can be 3Hz / 10s, 3.5Hz / 10s, or 4Hz / 10s. Thus, by limiting v... f3 The value of K allows for better determination of the third frequency adjustment speed, thereby better controlling the compressor frequency to decrease at different speeds based on the K value. It also allows for better adjustment of the compressor frequency and exhaust temperature based on the temperature difference K between the evaporator coil and evaporator fins, thus better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. This keeps the temperature difference between the evaporator coil and evaporator fins within the first preset temperature difference range, avoiding excessive temperature differences between the evaporator coil and evaporator fins that could cause thermal expansion and contraction noises.

[0047] Optionally, v T1 The value range is [1℃ / 10s, 2℃ / 10s]. Specifically, v T1The value of v can be 1℃ / 10s, 1.5℃ / 10s, or 2℃ / 10s. Thus, by limiting v... T1 The value of K allows for a better determination of the first temperature regulation speed, thereby better controlling the compressor's exhaust temperature to decrease at different rates based on the K value. It also allows for better adjustment of the compressor's frequency and exhaust temperature based on the temperature difference K between the evaporator coil and evaporator fins. This better prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus keeping the temperature difference between the evaporator coil and evaporator fins within the first preset temperature difference range. This avoids excessive temperature differences between the evaporator coil and evaporator fins that could cause thermal expansion and contraction noises.

[0048] Optionally, v T2 The value range is [2℃ / 10s, 3℃ / 10s]. Specifically, v T2 The value of v can be 2℃ / 10s, 2.5℃ / 10s, or 3℃ / 10s. Thus, by limiting v... T2 By determining the value of K, the second temperature regulation speed can be better determined, thereby better controlling the compressor's exhaust temperature to decrease at different rates according to the K value. It can also better adjust the compressor's frequency and exhaust temperature according to the temperature difference K between the evaporator coil and the evaporator fins, thereby better preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. This keeps the temperature difference between the evaporator coil and the evaporator fins within the first preset temperature difference range, avoiding excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0049] Optionally, v T3 The value range is [3℃ / 10s, 4℃ / 10s]. Specifically, v T3 The value of v can be 3℃ / 10s, 3.5℃ / 10s, or 4℃ / 10s. Thus, by limiting v... T3 By determining the value of K, the third temperature regulation speed can be better determined, thereby better controlling the compressor's exhaust temperature to decrease at different rates according to the K value. It can also better adjust the compressor's frequency and exhaust temperature according to the temperature difference K between the evaporator coil and the evaporator fins, thereby better preventing the refrigerant temperature in the evaporator from dropping or rising too quickly. This keeps the temperature difference between the evaporator coil and the evaporator fins within the first preset temperature difference range, avoiding excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0050] Combination Figure 4 As shown in the embodiments of this disclosure, another method for self-cleaning an air conditioner is provided, comprising:

[0051] S401, the air conditioner determines the temperature difference K between the evaporator coil and the evaporator fins.

[0052] S402, the air conditioner adjusts the compressor frequency and exhaust temperature according to K so that K is within the first preset temperature difference range.

[0053] S403, the air conditioner determines the rate of change of evaporator coil temperature S.

[0054] S404, the air conditioner adjusts the compressor frequency and exhaust temperature according to S so that S is within the first preset temperature change rate range.

[0055] The self-cleaning method for air conditioners provided in this disclosure can adjust the compressor frequency and discharge temperature according to the temperature difference K between the evaporator coil and evaporator fins during the self-cleaning process. This prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus maintaining the temperature difference between the evaporator coil and evaporator fins within a first preset temperature difference range. This better avoids excessive temperature differences between the evaporator coil and evaporator fins that could cause thermal expansion and contraction noises. Furthermore, adjusting the compressor frequency and discharge temperature according to the evaporator coil temperature change rate S further prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, maintaining the evaporator coil temperature change rate within a first preset temperature change rate range. This better avoids excessive temperature changes in the evaporator coil that could cause thermal expansion and contraction noises.

[0056] Optionally, the air conditioner adjusts the compressor frequency and discharge temperature according to S, including: when S is in the second preset temperature change rate range (0, S1), the air conditioner increases the compressor frequency while maintaining the compressor discharge temperature constant. Alternatively, when S is in the first preset temperature change rate range (S1, S2), the air conditioner maintains the compressor frequency and discharge temperature constant. Alternatively, when S is in the third preset temperature change rate range (S2, +∞), the air conditioner adjusts the compressor frequency and discharge temperature according to S. Wherein, S1 < S2. In this way, by adjusting the compressor frequency and discharge temperature according to the magnitude of the evaporator coil temperature change rate S, the refrigerant temperature in the evaporator is prevented from dropping or rising too quickly, thus keeping the evaporator coil temperature change rate within the first preset temperature change rate range, and better avoiding the thermal expansion and contraction noise caused by excessive evaporator coil temperature change rate.

[0057] Optionally, when S is within the second preset temperature change rate range (0, S1), the air conditioner increases the compressor frequency, including: when S is within the second preset temperature change rate range (0, S1), the air conditioner adjusts the speed v at a fourth frequency. f4Increase the compressor frequency. This way, by controlling the compressor frequency to decrease at the first frequency adjustment speed, the compressor frequency and exhaust temperature can be better adjusted according to the magnitude of the evaporator coil temperature change rate S. This better prevents the refrigerant temperature in the evaporator from dropping or rising too quickly, thus keeping the evaporator coil temperature change rate within the first preset temperature change rate range. This better avoids the thermal expansion and contraction noise caused by excessive evaporator coil temperature change rate.

[0058] Optionally, the air conditioner reduces the compressor frequency and exhaust temperature according to S, including: when S is within the fourth preset temperature change rate range (S2, S3), the air conditioner adjusts the speed v at a fourth frequency. f4 Reduce the compressor frequency and adjust the speed v to the fourth temperature setting. T4 Lower the compressor's discharge temperature. Alternatively, when S is within the fifth preset temperature change rate range (S3, S4), the air conditioner adjusts the speed v at the fifth frequency. f5 Reduce the compressor frequency and adjust the speed v at the fifth temperature setting. T5 Lower the compressor's discharge temperature. Alternatively, when S is within the sixth preset temperature change rate range (S4, +∞), the air conditioner adjusts the speed v at the sixth frequency. f6 Reduce the compressor frequency and adjust the speed v at the sixth temperature setting. T6 Reduce the compressor's discharge temperature. Where S2 < S3 < S4, v f4 ≤v f5 <v f6 v T4 ≤v T5 ≤v T6 In this way, when the rate of temperature change of the evaporator coil is within the third preset temperature change rate range, the compressor frequency and discharge temperature can be better adjusted according to the rate of temperature change S of the evaporator coil. This prevents the refrigerant temperature in the evaporator from dropping or rising too quickly, thus keeping the rate of temperature change of the evaporator coil within the first preset temperature change rate range. This better avoids the thermal expansion and contraction noise caused by excessive temperature change of the evaporator coil.

[0059] Optionally, the value of S1 can be in the range of [0.5℃ / 3s, 2℃ / 3s]. Specifically, the value of S1 can be 0.5℃ / 3s, 1℃ / 3s, or 2℃ / 3s. In this way, by limiting the value of S1, the range of the first preset temperature change rate interval and the second preset temperature change rate interval can be better determined, thereby better avoiding the evaporator coil temperature change rate from being too large, which would cause thermal expansion and contraction noise.

[0060] Optionally, the value of S2 can be within the range of [3℃ / 3s, 5℃ / 3s]. Specifically, the value of S2 can be 3℃ / 3s, 4℃ / 3s, or 5℃ / 3s. In this way, by limiting the value of S2, the range of the first preset temperature change rate interval, the third preset temperature change rate interval, and the fourth preset temperature change rate interval can be better determined, thereby better avoiding the evaporator coil temperature change rate from being too large, which would cause thermal expansion and contraction noise.

[0061] Optionally, the value of S3 can be in the range of [6℃ / 3s, 8℃ / 3s]. Specifically, the value of S3 can be 6℃ / 3s, 7℃ / 3s, or 8℃ / 3s. In this way, by limiting the value of S3, the range of the fourth preset temperature change rate interval and the fifth preset temperature change rate interval can be better determined, thereby better avoiding the evaporator coil temperature change rate from being too large, which would cause thermal expansion and contraction noise.

[0062] Optionally, the value of S4 can be in the range of [9℃ / 3s, 11℃ / 3s]. Specifically, the value of S4 can be 9℃ / 3s, 10℃ / 3s, or 11℃ / 3s. In this way, by limiting the value of S4, the range of the fifth preset temperature change rate interval and the sixth preset temperature change rate interval can be better determined, thereby better avoiding the evaporator coil temperature change rate from being too large, which would cause thermal expansion and contraction noise.

[0063] Optionally, v f4 The value range is [1Hz / 10s, 2Hz / 10s]. Specifically, v f4 The value of v can be 1Hz / 10s, 1.5Hz / 10s, or 2Hz / 10s. Thus, by limiting v... f4 The value of can better determine the fourth frequency adjustment speed, thereby better adjusting the compressor frequency according to the rate of change of evaporator coil temperature, and thus better avoiding the thermal expansion and contraction noise caused by excessive evaporator coil temperature change.

[0064] Optionally, v f5 The value range is [2Hz / 10s, 3Hz / 10s]. Specifically, v f5 The value of v can be 2Hz / 10s, 2.5Hz / 10s, or 2Hz / 10s. Thus, by limiting v... f5 The value of can better determine the fifth frequency adjustment speed, thereby better adjusting the compressor frequency according to the rate of change of evaporator coil temperature, and thus better avoiding the thermal expansion and contraction noise caused by excessive evaporator coil temperature change.

[0065] Optionally, v f6 The value range is [3Hz / 10s, 4Hz / 10s]. Specifically, v f6The value can be 3Hz / 10s, 3.5Hz / 10s, or 4Hz / 10s. Thus, by limiting v... f6 The value of can better determine the sixth frequency adjustment speed, thereby better adjusting the compressor frequency according to the rate of change of evaporator coil temperature, and thus better avoiding the thermal expansion and contraction noise caused by excessive evaporator coil temperature change.

[0066] Optionally, v T4 The value range is [1℃ / 10s, 2℃ / 10s]. Specifically, v T4 The value of v can be 1℃ / 10s, 1.5℃ / 10s, or 2℃ / 10s. Thus, by limiting v... T4 The value of this value can better determine the fourth temperature regulation speed, thereby better adjusting the compressor's exhaust temperature according to the rate of change of the evaporator coil temperature, and thus better avoiding the thermal expansion and contraction noise caused by excessive changes in the evaporator coil temperature.

[0067] Optionally, v T5 The value range is [2℃ / 10s, 3℃ / 10s]. Specifically, v T5 The value of v can be 2℃ / 10s, 2.5℃ / 10s, or 3℃ / 10s. Thus, by limiting v... T5 The value of can better determine the fifth temperature regulation speed, thereby better adjusting the compressor's exhaust temperature according to the rate of change of the evaporator coil temperature, and thus better avoiding the thermal expansion and contraction noise caused by excessive changes in the evaporator coil temperature.

[0068] Optionally, v T6 The value range is [3℃ / 10s, 4℃ / 10s]. Specifically, v T6 The value of v can be 3℃ / 10s, 3.5℃ / 10s, or 4℃ / 10s. Thus, by limiting v... T6 The value of can better determine the sixth temperature adjustment speed, thereby better adjusting the compressor's exhaust temperature according to the rate of change of the evaporator coil temperature, and thus better avoiding the thermal expansion and contraction noise caused by excessive changes in the evaporator coil temperature.

[0069] Combination Figure 5 As shown in the embodiments of this disclosure, another method for self-cleaning an air conditioner is provided, comprising:

[0070] S501, the air conditioner determines the temperature difference K between the evaporator coil and the evaporator fins.

[0071] S502, the air conditioner adjusts the compressor frequency and exhaust temperature according to K, and the air conditioner adjusts the outdoor fan speed according to K so that K is within the first preset temperature difference range.

[0072] The self-cleaning method for air conditioners provided in this embodiment can adjust the compressor frequency, exhaust temperature, and outdoor fan speed according to the temperature difference K between the evaporator coil and the evaporator fins during the self-cleaning process. This prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus keeping the temperature difference between the evaporator coil and the evaporator fins within a first preset temperature difference range. This avoids excessive temperature differences between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noises.

[0073] Optionally, the air conditioner adjusts the outdoor fan speed according to K, including: when K is in the second preset temperature difference range (-∞, K1] or the first preset temperature difference range (K1, K2], the air conditioner keeps the outdoor fan speed constant. Alternatively, when K is in the third preset temperature difference range (K2, +∞), the air conditioner reduces the outdoor fan speed to the first preset speed v1. This better adjusts the compressor frequency, exhaust temperature, and outdoor fan speed according to the temperature difference K between the evaporator coil and evaporator fins, thereby preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. This keeps the temperature difference between the evaporator coil and evaporator fins within the first preset temperature difference range, avoiding excessive temperature differences that could cause thermal expansion and contraction noises.

[0074] Optionally, the value of v1 can be within the range of [10 r / min, 50 r / min]. Specifically, the value of v1 can be 10 r / min, 20 r / min, 30 r / min, 40 r / min, or 50 r / min. In this way, by limiting the value of v1, the first preset wind speed can be better determined, thereby better adjusting the outdoor fan speed according to the temperature difference K between the evaporator coil and the evaporator fins, and avoiding excessive temperature difference between the evaporator coil and the evaporator fins that could cause thermal expansion and contraction noise.

[0075] Combination Figure 6 As shown in the embodiments of this disclosure, another method for self-cleaning an air conditioner is provided, comprising:

[0076] S601, the air conditioner determines the temperature difference K between the evaporator coil and the evaporator fins.

[0077] S602, the air conditioner adjusts the compressor frequency and exhaust temperature according to K so that K is within the first preset temperature difference range.

[0078] S603, the air conditioner determines the rate of change of evaporator coil temperature S.

[0079] S604, the air conditioner adjusts the compressor frequency and exhaust temperature according to S, and the air conditioner adjusts the outdoor fan speed according to S so that S is within the first preset temperature change rate range.

[0080] The self-cleaning method for air conditioners provided in this disclosure can adjust the compressor frequency and exhaust temperature according to the temperature difference K between the evaporator coil and evaporator fins during the self-cleaning process. This prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus maintaining the temperature difference between the evaporator coil and evaporator fins within a first preset temperature difference range. Furthermore, the compressor frequency, exhaust temperature, and outdoor fan speed are adjusted according to the evaporator coil temperature change rate S, further preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly, and maintaining the evaporator coil temperature change rate within a first preset temperature change rate range. This better avoids excessive temperature differences between the evaporator coil and evaporator fins that could cause thermal expansion and contraction noises.

[0081] Optionally, the air conditioner adjusts the outdoor fan speed according to S, including: when S is in the second preset temperature change rate range (0, S1) or the first preset temperature change rate range (S1, S2), the air conditioner keeps the outdoor fan speed constant. Alternatively, when S is in the third preset temperature change rate range (S2, +∞), the air conditioner reduces the outdoor fan speed to the second preset speed v2. This better adjusts the compressor frequency, exhaust temperature, and outdoor fan speed according to the magnitude of the evaporator coil temperature change rate, thereby preventing the refrigerant temperature inside the evaporator from dropping or rising too quickly. This keeps the evaporator coil temperature change rate within the first preset temperature change rate range, avoiding excessively rapid temperature changes in the evaporator coil that could cause thermal expansion and contraction noise.

[0082] Optionally, the value of v2 can be within the range of [10 r / min, 50 r / min]. Specifically, the value of v2 can be 10 r / min, 20 r / min, 30 r / min, 40 r / min, or 50 r / min. By limiting the value of v2, the second preset fan speed can be better determined, thereby allowing for better adjustment of the outdoor fan speed according to the rate of change in evaporator coil temperature, preventing excessively rapid temperature changes in the evaporator coil that could cause thermal expansion and contraction noise.

[0083] Combination Figure 7 As shown in the embodiments of this disclosure, another method for self-cleaning an air conditioner is provided, comprising:

[0084] S701, the air conditioner determines the temperature difference K between the evaporator coil and the evaporator fins.

[0085] S702, the air conditioner adjusts the compressor frequency and exhaust temperature according to K, and the air conditioner adjusts the outdoor fan speed according to K so that K is within the first preset temperature difference range.

[0086] S703, the air conditioner determines the rate of change of evaporator coil temperature S.

[0087] S704, the air conditioner adjusts the compressor frequency and exhaust temperature according to S, and the air conditioner adjusts the outdoor fan speed according to S so that S is within the first preset temperature change rate range.

[0088] The self-cleaning method for air conditioners provided in this disclosure can adjust the compressor frequency, exhaust temperature, and outdoor fan speed according to the temperature difference K between the evaporator coil and evaporator fins during the self-cleaning process. This prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, thus maintaining the temperature difference between the evaporator coil and evaporator fins within a first preset temperature difference range. Furthermore, by adjusting the compressor frequency, exhaust temperature, and outdoor fan speed according to the evaporator coil temperature change rate S, the method also prevents the refrigerant temperature inside the evaporator from dropping or rising too quickly, maintaining the evaporator coil temperature change rate within a first preset temperature change rate range. This better avoids excessive temperature differences between the evaporator coil and evaporator fins that could lead to thermal expansion and contraction noises.

[0089] Combination Figure 8 As shown, this disclosure provides an apparatus for self-cleaning an air conditioner, including a processor 100 and a memory 101. Optionally, the apparatus may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the self-cleaning method for an air conditioner described in the above embodiment.

[0090] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0091] The memory 101, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, thereby implementing the method for self-cleaning of the air conditioner in the above embodiments.

[0092] The memory 101 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 101 may include high-speed random access memory and may also include non-volatile memory.

[0093] This disclosure provides an air conditioner that includes the above-described device for self-cleaning the air conditioner.

[0094] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for self-cleaning an air conditioner.

[0095] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the above-described method for self-cleaning an air conditioner.

[0096] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0097] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0098] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0099] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0100] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely 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. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. 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 may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0101] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for self-cleaning an air conditioner, characterized in that, include: Determine the temperature difference between the evaporator coil and the evaporator fins. K ; According to temperature difference K Adjust the compressor frequency and discharge temperature to achieve a temperature difference. K Within the first preset temperature difference range; According to the temperature difference K Adjusting the compressor frequency and discharge temperature includes: Temperature difference K Within the second preset temperature difference range (-∞, K In case 1], increase the compressor frequency while keeping the compressor discharge temperature constant; or, Temperature difference K Within the first preset temperature difference range ( K 1, K In case 2], keep the compressor frequency and the compressor discharge temperature constant; or, Temperature difference K Within the third preset temperature difference range ( K In the case of 2, +∞), according to the temperature difference K Reduce the compressor frequency and exhaust temperature; among them, K 1 < K 2; The temperature difference K Within the second preset temperature difference range (-∞, K In the case of [1], increasing the compressor frequency includes: increasing the compressor frequency in response to temperature differences. K Within the second preset temperature difference range (-∞, K In the case of 1], adjust the speed at the first frequency. v f1 Increase the compressor frequency.

2. The method according to claim 1, characterized in that, According to the temperature difference K Reduce compressor frequency and discharge temperature, including: Temperature difference K Within the fourth preset temperature difference range ( K 2, K In the case of 3], adjust the speed at the first frequency. v f1 Reduce the compressor frequency and adjust the speed to the first temperature. v T1 Lower the compressor's exhaust temperature; or, Temperature difference K Within the fifth preset temperature difference range ( K 3, K In the case of [4], the speed is adjusted at the second frequency. v f2 Reduce the compressor frequency and adjust the speed according to the second temperature. v T2 Lower the compressor's exhaust temperature; or, Temperature difference K Within the sixth preset temperature difference range ( K In the case of 4, +∞), adjust the speed at the third frequency. v f3 Reduce the compressor frequency and adjust the speed using the third temperature setting. v T3 Lower the compressor's exhaust temperature; in, K 2< K 3< K 4, v f1 ≤ v f2 ≤ v f3 , v T1 ≤ v T2 ≤ v T3 .

3. The method according to claim 1 or 2, characterized in that, Also includes: Determine the rate of temperature change of the evaporator coil S ; Based on the rate of temperature change of the evaporator coil S Adjust the compressor frequency and discharge temperature to adjust the rate of temperature change of the evaporator coil. S It is within the first preset temperature change rate range.

4. The method according to claim 3, characterized in that, The rate of change of evaporator coil temperature S Adjusting the compressor frequency and discharge temperature includes: The rate of temperature change in the evaporator coil S Within the second preset temperature change rate range (0, S In case 1], increase the compressor frequency while keeping the compressor discharge temperature constant; or, The rate of temperature change in the evaporator coil S Within the first preset temperature change rate range ( S 1, S In case 2], keep the compressor frequency and the compressor discharge temperature constant; or, The rate of temperature change in the evaporator coil S Within the third preset temperature change rate range ( S In the case of 2, +∞), based on the rate of change of evaporator coil temperature S Reduce the compressor frequency and exhaust temperature; in, S 1 < S 2.

5. The method according to claim 4, characterized in that, The rate of temperature change of the evaporator coil S Within the second preset temperature change rate range (0, S In the case of [1], increasing the compressor frequency includes: The rate of temperature change in the evaporator coil S Within the second preset temperature change rate range (0, S In the case of [1], the speed is adjusted at the fourth frequency. v f4 Increase the compressor frequency.

6. The method according to claim 4, characterized in that, The rate of change of evaporator coil temperature S Reduce compressor frequency and discharge temperature, including: The rate of temperature change in the evaporator coil S Within the fourth preset temperature change rate range ( S 2, S In the case of [3], the speed is adjusted at the fourth frequency. v f4 Reduce the compressor frequency and adjust the speed to the fourth temperature setting. v T4 Lower the compressor's exhaust temperature; or, The rate of temperature change in the evaporator coil S Within the fifth preset temperature change rate range ( S 3, S In the case of [4], the speed is adjusted at the fifth frequency. v f5 Reduce the compressor frequency and adjust the speed to the fifth temperature setting. v T5 Lower the compressor's exhaust temperature; or, The rate of temperature change in the evaporator coil S Within the sixth preset temperature change rate range ( S In the case of 4, +∞), adjust the speed at the sixth frequency. v f6 Reduce the compressor frequency and adjust the speed at the sixth temperature setting. v T6 Lower the compressor's exhaust temperature; in, S 2< S 3< S 4, v f4 ≤ v f5 < v f6 , v T4 ≤ v T5 ≤ v T6 .

7. A device for self-cleaning an air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the method for self-cleaning an air conditioner as described in any one of claims 1 to 6.

8. An air conditioner, characterized in that, Includes the device for self-cleaning of air conditioners as described in claim 7.

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