A control method and device of an air conditioner, a storage medium and an air conditioner

Abstract

The application provides a control method and device of an air conditioner, a storage medium and the air conditioner. The method comprises the following steps: after the air conditioner is started and enters a heating mode, it is judged that the current running air damper of the indoor fan of the air conditioner; the air conditioner is controlled according to the current running air damper of the indoor fan of the air conditioner and the temperature of the indoor heat exchanger; and / or when the air damper of the indoor fan of the air conditioner is switched, it is judged whether the indoor fan is switched from an air damper higher than a first preset air damper to an air damper lower than a second preset air damper, wherein the rotating speed of the indoor fan corresponding to the first preset air damper is higher than the rotating speed of the indoor fan corresponding to the second preset air damper; if it is judged that the indoor fan is switched from an air damper higher than the first preset air damper to an air damper lower than the second preset air damper, the rotating speed of the indoor fan and the operating frequency of the compressor of the air conditioner are controlled according to a set control logic. The scheme provided by the application can effectively solve the problem of indoor machine transmission sound.

Description

TECHNICAL FIELD

[0001] The present application relates to the control field, and particularly to a control method and device of an air conditioner, a storage medium and the air conditioner. BACKGROUND

[0002] At present, with the popularization of household air conditioners in thousands of households, users not only need simple refrigeration and heating functions of air conditioners, but also pursue comfortable feelings. The noise level of the indoor unit of the air conditioner is an important indicator of the comfort of the air conditioner.

[0003] Variable frequency air conditioners have become mainstream. They adjust the operating frequency of the compressor according to the load of the room to meet different load requirements. Variable frequency air conditioners perform outstandingly in energy saving and comfort, but have the following shortcomings in noise: first, the indoor unit can emit abnormal sounds such as “hum” when the outdoor unit operates at low frequency, especially in the heating condition; second, as the operating frequency of the compressor increases, the noise value of the outdoor unit becomes larger, and there is a relatively harsh high-frequency sound. At the same time, the variable frequency compressor may produce abnormal noise when operating at different frequencies. The noise is transmitted to the indoor side through the flow of refrigerant, affecting the experience of the user on the indoor side. SUMMARY

[0004] The main purpose of the present application is to overcome the defects of the above-mentioned related technologies, and to provide a control method and device of an air conditioner, a storage medium and the air conditioner, so as to solve the problem of the transmission sound of the air conditioner in the related technologies.

[0005] The present application provides a control method of an air conditioner, comprising: after the air conditioner is turned on and enters a heating mode, judging the current operating air damper of the indoor fan of the air conditioner; controlling the air conditioner according to the current operating air damper of the indoor fan of the air conditioner and the temperature of the indoor heat exchanger; and / or, in the case that the air conditioner operates in the heating mode, when the air damper of the indoor fan of the air conditioner is switched, judging whether the indoor fan is switched from an air damper higher than a first preset air damper to an air damper lower than a second preset air damper, wherein the rotating speed of the indoor fan corresponding to the first preset air damper is higher than the rotating speed of the indoor fan corresponding to the second preset air damper; if it is judged that the indoor fan is switched from an air damper higher than the first preset air damper to an air damper lower than the second preset air damper, the operating frequency and the rotating speed of the compressor of the air conditioner are controlled according to the set control logic.

[0006] Optionally, the air conditioner is controlled according to the current operation of the indoor fan and the temperature of the indoor heat exchanger of the air conditioner, including: when the current operation of the indoor fan is a third preset wind deflector or lower than the third preset wind deflector, adjusting the discharge temperature of the compressor and / or the operating frequency of the compressor of the air conditioner according to the temperature of the indoor heat exchanger of the air conditioner; when the current operation of the indoor fan is a fourth preset wind deflector or higher than the fourth preset wind deflector, adjusting the discharge temperature of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the indoor fan according to the temperature of the indoor heat exchanger of the air conditioner; wherein the rotating speed of the indoor fan corresponding to the fourth preset wind deflector is higher than the rotating speed of the indoor fan corresponding to the third preset wind deflector; and / or, the operating frequency of the compressor and the rotating speed of the indoor fan of the air conditioner are controlled according to a set control logic, including: controlling the operating frequency of the compressor to decrease to the target frequency of the compressor after the indoor fan switches the wind deflector according to a set frequency reduction rate, and controlling the indoor fan to decrease to the target rotating speed corresponding to the target wind deflector in three stages; wherein in the first stage, the indoor fan is controlled to operate at a first rotating speed reduction rate for a first time; in the second stage, the indoor fan is controlled to operate at the rotating speed reached in the first stage for a second time; in the third stage, the indoor fan is controlled to operate at a first rotating speed reduction rate for a third time, and the rotating speed is reduced to the target rotating speed corresponding to the target wind deflector; the time sum of the first time, the second time and the third time is greater than the frequency reduction time required for the compressor to decrease to the current target frequency according to the set frequency reduction rate.

[0007] Optionally, when the current running wind level of the indoor fan is the third preset wind level or below, the adjusting the discharge temperature of the compressor and / or the operating frequency of the compressor of the air conditioner according to the indoor heat exchanger temperature of the air conditioner comprises: when the indoor heat exchanger temperature is greater than a first preset temperature threshold and less than or equal to a second preset temperature threshold, controlling the discharge temperature to decrease by a first preset discharge temperature value; when the indoor heat exchanger temperature is greater than the second preset temperature threshold and less than or equal to a third preset temperature threshold, controlling the discharge temperature to decrease by a second preset discharge temperature value and controlling the operating frequency of the compressor to decrease by a first preset frequency value; when the indoor heat exchanger temperature is greater than the third preset temperature threshold, controlling the discharge temperature to decrease by a third preset discharge temperature value and controlling the operating frequency of the compressor to decrease by a second preset frequency value; the first preset discharge temperature value is less than the second preset discharge temperature value; the second preset discharge temperature value is less than the third preset discharge temperature value; the first preset temperature threshold is less than the second preset temperature threshold, and the second preset temperature threshold is less than the third temperature threshold; and / or, when the current running wind level of the indoor fan is the fourth preset wind level or above, the adjusting the discharge temperature of the compressor, the operating frequency of the compressor and / or the rotating speed of the indoor fan of the air conditioner according to the indoor heat exchanger temperature of the air conditioner comprises: when the indoor heat exchanger temperature is greater than a fourth preset temperature threshold and less than or equal to a fifth preset temperature threshold, controlling the discharge temperature to decrease by a fourth preset discharge temperature value and controlling the rotating speed of the indoor fan to increase by a first preset rotating speed value; when the indoor heat exchanger temperature is greater than the fifth preset temperature threshold and less than or equal to a sixth preset temperature threshold, controlling the discharge temperature to decrease by a fifth preset discharge temperature value, controlling the operating frequency of the compressor to decrease by a third preset frequency value, and controlling the rotating speed of the indoor fan to increase by the first preset rotating speed value; when the indoor heat exchanger temperature is greater than the sixth preset temperature threshold, controlling the discharge temperature to decrease by a sixth preset discharge temperature value, controlling the operating frequency of the compressor to decrease by a fourth preset frequency value, and controlling the rotating speed of the indoor fan to increase by a second preset rotating speed value; the first preset rotating speed value is less than the second preset rotating speed value; the fourth preset discharge temperature value is less than the fifth preset discharge temperature value; the fifth preset discharge temperature value is less than the sixth preset discharge temperature value; the fourth preset temperature threshold is less than the fifth preset temperature threshold, and the fifth preset temperature threshold is less than the sixth preset temperature threshold.

[0008] Optionally, further comprising: before judging the air damper currently running by the air conditioner, judging whether the air conditioner satisfies at least one of the following conditions: the running time reaches a preset time length, the running frequency of the compressor reaches a target frequency, and the exhaust temperature of the compressor reaches a target exhaust temperature; and after judging that the air conditioner satisfies at least one of the following conditions: the running time reaches a preset time length, the running frequency of the compressor reaches a target frequency, and the exhaust temperature of the compressor reaches a target exhaust temperature, judging the air damper currently running by the air conditioner.

[0009] Optionally, further comprising: before controlling the running frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic, controlling the air deflector of the air conditioner to rotate from the current first angle to a preset angle; and after controlling the running frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic, controlling the air deflector of the air conditioner to return to the first angle from the preset angle.

[0010] In another aspect, the application provides a control device of an air conditioner, comprising: a first judging unit, configured to judge the air damper currently running by the inner fan of the air conditioner after the air conditioner is powered on and enters a heating mode; a first control unit, configured to control the air conditioner according to the air damper currently running by the inner fan of the air conditioner judged by the first judging unit and the temperature of the inner heat exchanger; and / or a second judging unit, configured to judge whether the inner fan is switched from an air damper higher than a first preset air damper to an air damper lower than a second preset air damper when the inner fan of the air conditioner is switched in the case that the air conditioner runs in the heating mode, wherein the rotating speed of the inner fan corresponding to the first preset air damper is higher than the rotating speed of the inner fan corresponding to the second preset air damper; and a second control unit, configured to control the running frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to a set control logic if the second judging unit judges that the inner fan is switched from an air damper higher than a first preset air damper to an air damper lower than a second preset air damper.

[0011] Optionally, the first control unit controls the air conditioner according to the current running wind level of the indoor fan and the indoor heat exchanger temperature of the air conditioner, comprising: when the current running wind level of the indoor fan is the third preset wind level or lower than the third preset wind level, adjusting the discharge temperature of the compressor and / or the operating frequency of the compressor according to the indoor heat exchanger temperature of the air conditioner; when the current running wind level of the indoor fan is the fourth preset wind level or higher than the fourth preset wind level, adjusting the discharge temperature of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the indoor fan according to the indoor heat exchanger temperature of the air conditioner; wherein the rotating speed of the indoor fan corresponding to the fourth preset wind level is higher than the rotating speed of the indoor fan corresponding to the third preset wind level; and / or the second control unit controls the operating frequency of the compressor and the rotating speed of the indoor fan of the air conditioner according to a set control logic, comprising: controlling the operating frequency of the compressor to decrease to the target frequency of the compressor after the indoor fan switches the wind level according to a set frequency reduction rate, and controlling the indoor fan to decrease to the target rotating speed corresponding to the target wind level in three stages; wherein in the first stage, the indoor fan is controlled to operate at a first rotating speed reduction rate for a first time; in the second stage, the indoor fan is controlled to operate at the rotating speed reached in the first stage for a second time; in the third stage, the indoor fan is controlled to operate at a first rotating speed reduction rate for a third time; the first rotating speed reduction rate is equal to the ratio of the rotating speed reduction value of the indoor fan decreasing to the target rotating speed corresponding to the target wind level to the frequency reduction time required for the compressor to decrease to the current target frequency according to the set frequency reduction rate; the sum of the first time and the third time is equal to the frequency reduction time required for the compressor to decrease to the current target frequency according to the set frequency reduction rate.

[0012] Optionally, when the current running air curtain of the indoor unit is a third preset air curtain or below the third preset air curtain, the first control unit adjusts the discharge temperature of the compressor and / or the running frequency of the compressor of the air conditioner according to the indoor unit heat exchanger temperature of the air conditioner, including: when the indoor unit heat exchanger temperature is greater than a first preset temperature threshold and less than or equal to a second preset temperature threshold, controlling the discharge temperature to decrease by a first preset discharge temperature value; when the indoor unit heat exchanger temperature is greater than the second preset temperature threshold and less than or equal to a third preset temperature threshold, controlling the discharge temperature to decrease by a second preset discharge temperature value, and controlling the running frequency of the compressor to decrease by a first preset frequency value; when the indoor unit heat exchanger temperature is greater than the third preset temperature threshold, controlling the discharge temperature to decrease by a third preset discharge temperature value, and controlling the running frequency of the compressor to decrease by a second preset frequency value; the first preset discharge temperature value is less than the second preset discharge temperature value; the second preset discharge temperature value is less than the third preset discharge temperature value; the first preset temperature threshold is less than the second preset temperature threshold, and the second preset temperature threshold is less than the third temperature threshold; and / or, when the current running air curtain of the indoor unit is a fourth preset air curtain or above the fourth preset air curtain, the first control unit adjusts the discharge temperature of the compressor, the running frequency of the compressor, and / or the indoor unit rotation speed of the air conditioner according to the indoor unit heat exchanger temperature of the air conditioner, including: when the indoor unit heat exchanger temperature is greater than a fourth preset temperature threshold and less than or equal to a fifth preset temperature threshold, controlling the discharge temperature to decrease by a fourth preset discharge temperature value, and controlling the indoor unit rotation speed to increase by a first preset rotation speed value; when the indoor unit heat exchanger temperature is greater than the fifth preset temperature threshold and less than or equal to a sixth preset temperature threshold, controlling the discharge temperature to decrease by a fifth preset discharge temperature value, controlling the running frequency of the compressor to decrease by a third preset frequency value, and controlling the indoor unit rotation speed to increase by a first preset rotation speed value; when the indoor unit heat exchanger temperature is greater than the sixth preset temperature threshold, controlling the discharge temperature to decrease by a sixth preset discharge temperature value, controlling the running frequency of the compressor to decrease by a fourth preset frequency value, and controlling the indoor unit rotation speed to increase by a second preset rotation speed value; the first preset rotation speed value is less than the second preset rotation speed value; the fourth preset discharge temperature value is less than the fifth preset discharge temperature value; the fifth preset discharge temperature value is less than the sixth preset discharge temperature value; the fourth preset temperature threshold is less than the fifth preset temperature threshold, and the fifth preset temperature threshold is less than the sixth preset temperature threshold.

[0013] Optionally, the method further comprises: a third determining unit is configured to determine whether the air conditioner satisfies at least one of the following conditions: a running time of the air conditioner reaches a preset time, a running frequency of the compressor reaches a target frequency, and a discharge temperature of the compressor reaches a target discharge temperature; and the first determining unit is further configured to determine the current running wind deflector of the air conditioner when the third determining unit determines that the air conditioner satisfies at least one of the following conditions: the running time of the air conditioner reaches the preset time, the running frequency of the compressor reaches the target frequency, and the discharge temperature of the compressor reaches the target discharge temperature.

[0014] Optionally, the method further comprises: a third controlling unit is configured to control the air deflector of the air conditioner to switch from a current first angle to a preset angle before the second controlling unit controls the running frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic; and control the air deflector of the air conditioner to switch from the preset angle to the first angle after the second controlling unit controls the running frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic.

[0015] In still another aspect, the present application provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above methods.

[0016] In still another aspect, the present application provides an air conditioner comprising a processor, a memory, and a computer program stored in the memory and executable in the processor, wherein the processor implements the steps of any of the above methods when executing the program.

[0017] In still another aspect, the present application provides an air conditioner comprising the control device of any of the above.

[0018] According to the technical scheme of the present application, the discharge temperature of the compressor, the running frequency of the compressor, and / or the rotating speed of the inner fan of the air conditioner are adjusted according to the current running wind deflector of the inner fan and the temperature of the inner heat exchanger, which effectively solves the problem of the transmission sound of the inner unit, without changing the original structure and configuration of the air conditioner. The control method of the rotating speed hysteresis effectively solves the problem of the transmission sound when the inner fan switches from a higher wind deflector to a lower wind deflector.

[0019] According to the technical scheme of the present application, different control strategies are used in the stable running state and the wind deflector switching process of the air conditioner, without adjusting the existing structure and configuration. By monitoring the current evaporator temperature, the discharge temperature, the running frequency of the compressor, and the rotating speed of the inner fan are adjusted, so that the transmission sound of the inner unit is solved in the stable running state or the wind deflector switching process, achieving the effect of comfortable user experience. The problem that the transmission sound of the air conditioner cannot be completely solved by the silencer of the outdoor unit is effectively solved, and the problem of the transmission sound generated when the air conditioner is in the heating mode and switches from a higher wind deflector to a lower wind deflector is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0021] Figure 1 is a method schematic diagram of an embodiment of the control method of the air conditioner provided by the application;

[0022] Figure 2 is a method schematic diagram of a specific embodiment of the control method of the air conditioner provided by the application;

[0023] Figure 3 is a structure block diagram of an embodiment of the control device of the air conditioner provided by the application. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the application clearer, the technical solutions of the application will be described below in detail with specific embodiments of the application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0025] It should be noted that the terms "first", "second" and the like in the specification and claims of the application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to include those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0026] In order to eliminate noise, a muffler is often added to the compressor pipe. The current muffler only has a length of muffling cavity, and can only maximize the noise elimination amount of one frequency, so the existing muffler cannot eliminate different noises generated by the variable frequency compressor due to different working frequencies. And, in terms of the existing air conditioner structure, when encountering some low frequency noise problems (such as about 200 Hz), even if a reasonable muffler length is designed, due to the limited height space of the outdoor unit, it cannot be reasonably placed, so it cannot effectively solve such problems.

[0027] In addition, as the muffler volume increases, the rigidity of the pipeline itself is continuously enhanced, the overall pipeline flexibility is reduced, the reliability of the pipeline itself is seriously affected, and the vibration energy transmitted through the pipeline is further increased, causing further deterioration of the overall noise.

[0028] The present application provides a control method of an air conditioner.

[0029] Figure 1 The present application provides a control method of an air conditioner.

[0030] As shown in Figure 1 According to one embodiment of the present application, the control method of the air conditioner at least includes steps S110 and S120, and / or includes steps S130 and S140. Figure 1 Only the case where steps S110, S120, S130 and S140 are included is shown

[0031] Step S110, after the air conditioner is turned on and enters the heating mode, judges the current running air damper of the air conditioner's inner fan.

[0032] Preferably, before judging the current running air damper of the air conditioner's inner fan, it is judged whether the air conditioner satisfies at least one of the running time reaching a preset time, the running frequency of the compressor reaching a target frequency, and the exhaust temperature of the compressor reaching a target exhaust temperature; when it is judged that the air conditioner satisfies at least one of the running time reaching a preset time, the running frequency of the compressor reaching a target frequency, and the exhaust temperature of the compressor reaching a target exhaust temperature, the current running air damper of the air conditioner is judged.

[0033] Specifically, when the air conditioner is turned on and enters the heating mode, or the heating mode in the automatic mode, the "noise reduction function" is automatically started, and this is used as a signal to enter the noise reduction control function. After receiving the signal to enter the noise reduction control function, when it is judged that at least one of the stable running preset time (for example, 10 minutes), the running frequency of the compressor reaching a target frequency, and the exhaust temperature of the compressor reaching a target exhaust temperature is satisfied, the current running air damper of the air conditioner's inner fan is judged.

[0034] According to the operation mode of the air conditioner, when it needs to reach a stable operation state, the "noise reduction" is carried out to achieve the maximum optimization effect. The operation mode of the air conditioner is as follows: according to the detected inner ring and outer ring temperatures and the set temperature, the target frequency of the compressor and the target discharge temperature of the compressor are correspondingly adjusted, so that the refrigerating capacity or the heating capacity of the air conditioner can meet the user's demand. After the air conditioner is turned on, in order to ensure reliability, the operating frequency and the discharge temperature of the compressor are gradually adjusted to rise, and finally reach a steady state; for example, it generally takes about 10 minutes to reach the target frequency or the target discharge temperature. In practice, in order to ensure reliability, the actual operating frequency is limited by the controller temperature, current and other factors, resulting in that the frequency reduction cannot reach the target frequency, so the running time of the preset time is used as the criterion.

[0035] Step S120, controlling the air conditioner according to the current operating wind damper of the inner fan of the air conditioner and the temperature of the inner heat exchanger of the air conditioner.

[0036] Specifically, the discharge temperature of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the inner fan are controlled according to the current operating wind damper of the inner fan of the air conditioner and the temperature of the inner heat exchanger of the air conditioner. More specifically, when the current operating wind damper of the inner fan is the third preset wind damper or lower than the third preset wind damper, the discharge temperature of the compressor and / or the operating frequency of the compressor of the air conditioner are adjusted according to the temperature of the inner heat exchanger of the air conditioner; when the current operating wind damper of the inner fan is the fourth preset wind damper or higher than the fourth preset wind damper, the discharge temperature of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the inner fan are adjusted according to the temperature of the inner heat exchanger of the air conditioner. The rotating speed of the inner fan corresponding to the fourth preset wind damper is higher than the rotating speed of the inner fan corresponding to the third preset wind damper.

[0037] For example, the wind damper of the inner fan from low to high is respectively the mute damper, the low damper, the middle damper, the high damper and the super strong damper. The third preset wind damper is the middle damper, and the fourth preset wind damper is the high damper.

[0038] When the current operating wind damper of the inner fan is the mute damper, the low damper or the middle damper, the rotating speed of the inner fan is low, and at this time the compressor generally operates at a medium-low frequency (below 80 Hz), which causes the low-frequency "hum" sound to be easily transmitted from the outside to the inner machine through the connecting pipe, mainly due to two reasons: 1. The compressor load is too large, causing large operation vibration, which is excited after being transmitted to the inner heat exchanger (evaporator) through the pipeline; 2. The discharge temperature of the compressor is high, and the high-pressure refrigerant flows into the evaporator, exciting the transmission sound. The temperature level of the inner heat exchanger (evaporator) is used as the judgment basis, and the discharge temperature of the compressor and / or the operating frequency of the compressor of the air conditioner are adjusted according to the temperature of the inner heat exchanger. More specifically, according to the temperature of the inner heat exchanger, the discharge temperature of the compressor of the air conditioner and / or the operating frequency of the compressor of the air conditioner are reduced.

[0039] When the inner fan is currently running at a high or super-high speed, the inner fan rotates at a high speed, and the compressor generally operates at a high frequency (above 80 Hz), which causes the high-frequency irritating sound to be transmitted from the outside to the inner machine through the connecting pipe. The main reason is that the high-pressure refrigerant directly impacts the evaporator, causing the transmission sound to be excited. Therefore, the temperature of the inner machine heat exchanger (evaporator) is used as the determination reference, and the discharge temperature of the compressor of the air conditioner, the operating frequency of the compressor, and / or the rotation speed of the inner fan are adjusted according to the temperature of the inner machine heat exchanger. More specifically, according to the temperature of the inner machine heat exchanger, the discharge temperature of the compressor of the air conditioner and / or the operating frequency of the compressor of the air conditioner are reduced and / or the rotation speed of the inner fan is increased.

[0040] In some embodiments, when the inner fan is currently running at a third preset speed or below, the discharge temperature of the compressor of the air conditioner and / or the operating frequency of the compressor are adjusted according to the temperature of the inner machine heat exchanger of the air conditioner, which can specifically include: when the temperature of the inner machine heat exchanger is greater than a first preset temperature threshold and less than or equal to a second preset temperature threshold, the discharge temperature is controlled to be reduced by a first preset discharge temperature value; when the temperature of the inner machine heat exchanger is greater than the second preset temperature threshold and less than or equal to a third preset temperature threshold, the discharge temperature is controlled to be reduced by a second preset discharge temperature value, and the operating frequency of the compressor is controlled to be reduced by a first preset frequency value; when the temperature of the inner machine heat exchanger is greater than the third preset temperature threshold, the discharge temperature is controlled to be reduced by a third preset discharge temperature value, and the operating frequency of the compressor is controlled to be reduced by a second preset frequency value. In one specific embodiment, the discharge temperature can be adjusted by adjusting the opening degree of the throttling element of the air conditioner, and by adjusting the opening degree of the throttling element, the refrigerant circulation flow is increased, and the discharge temperature is reduced.

[0041] The first preset temperature threshold is less than the second preset temperature threshold, and the second preset temperature threshold is less than the third temperature threshold. The first preset discharge temperature value is less than the second preset discharge temperature value, and the second preset discharge temperature value is less than the third preset discharge temperature value. The first preset discharge temperature value can be a first preset percentage of the current discharge temperature, the second preset discharge temperature value can be a second preset percentage of the current discharge temperature, and the third preset discharge temperature value can be a third preset percentage of the current discharge temperature. The first preset percentage is less than the second preset percentage, and the second preset percentage is less than the third preset percentage.

[0042] For example, the first preset percentage is 5%, the second preset percentage is 8%, and the third preset percentage is 10%. The first preset exhaust temperature value is 48℃, the second preset exhaust temperature value is 52℃, and the third preset exhaust temperature value is 56℃. The first preset frequency value is 4Hz, and the second preset frequency value is 6Hz. When 48 < T≤ 52℃, the exhaust temperature is reduced by 5%, when 52 < T≤ 56℃, the exhaust temperature is reduced by 8%, and the actual operating frequency of the compressor is reduced by 4Hz; when T > 56℃, the exhaust temperature is reduced by 10%, and the actual operating frequency of the compressor is reduced by 6Hz.

[0043] In some embodiments, when the current operating air volume of the indoor unit is the fourth preset air volume or higher than the fourth preset air volume, the exhaust temperature, the operating frequency of the compressor, and / or the rotating speed of the indoor fan of the air conditioner are adjusted according to the temperature of the heat exchanger of the indoor unit, including: when the temperature of the heat exchanger of the indoor unit is greater than a fourth preset temperature threshold and less than or equal to a fifth preset temperature threshold, the exhaust temperature is controlled to be reduced by a fourth preset exhaust temperature value, and the rotating speed of the indoor fan is controlled to be increased by a first preset rotating speed value; when the temperature of the heat exchanger of the indoor unit is greater than the fifth preset temperature threshold and less than or equal to a sixth preset temperature threshold, the exhaust temperature is controlled to be reduced by a fifth preset exhaust temperature value, the operating frequency of the compressor is controlled to be reduced by a third preset frequency value, and the rotating speed of the indoor fan is controlled to be increased by the first preset rotating speed value; when the temperature of the heat exchanger of the indoor unit is greater than the sixth preset temperature threshold, the exhaust temperature is controlled to be reduced by a sixth preset exhaust temperature value, the operating frequency of the compressor is controlled to be reduced by a fourth preset frequency value, and the rotating speed of the indoor fan is controlled to be increased by a second preset rotating speed value.

[0044] The fourth preset temperature threshold is less than the fifth preset temperature threshold, and the fifth preset temperature threshold is less than the sixth preset temperature threshold; the first preset rotating speed value is less than the second preset rotating speed value. The fourth preset exhaust temperature value is less than the fifth preset exhaust temperature value; the fifth preset exhaust temperature value is less than the sixth preset exhaust temperature value; the first preset rotating speed value can be specifically a fourth preset percentage of the current rotating speed of the indoor fan; and the second preset rotating speed value can be specifically a fifth preset percentage of the current rotating speed of the indoor fan. The fourth preset percentage is less than the fifth preset percentage.

[0045] For example, the fourth preset percentage is 5%, and the fifth preset percentage is 10%. The fourth preset exhaust temperature value is 50℃, the fifth preset exhaust temperature value is 56℃, and the sixth preset exhaust temperature value is 60℃. The third preset frequency value is 2Hz, and the fourth preset frequency value is 4Hz. When 50 < T≤ 56℃, the exhaust temperature is reduced by 5%, and the actual running speed of the inner fan is increased by 5% at the same time; when 56 < T≤ 60℃, the exhaust temperature is reduced by 10%, and the actual running frequency of the compressor is reduced by 2Hz and the speed of the inner fan is increased by 5% at the same time; when T > 60℃, the exhaust temperature is reduced by 12%, and the actual running frequency of the compressor is reduced by 4Hz and the speed of the inner fan is increased by 10% at the same time.

[0046] When the high gear and the super gear are running, the general compressor frequency is high frequency. If the exhaust temperature is high, the exhaust pressure of the refrigerant will also be high at this time, that is, the high-temperature and high-pressure refrigerant from the outdoor unit impacts into the indoor unit through the connecting pipe, which will excite the transmission sound; reducing the exhaust temperature can effectively reduce the exhaust pressure and solve the transmission sound problem.

[0047] Step S130, when the inner fan of the air conditioner is switched in the heating mode, it is judged whether the inner fan is switched from a wind gear higher than a first preset wind gear to a wind gear lower than a second preset wind gear, wherein the inner fan speed corresponding to the first preset wind gear is higher than the inner fan speed corresponding to the second preset wind gear.

[0048] When switching from a higher wind gear to a lower wind gear, obvious transmission sound will be generated. When a higher wind gear is running, the compressor runs at high frequency (above 80Hz). Once it is switched to a lower wind gear, the inner fan speed decreases at a relatively fast rate, and in order to ensure reliability, the compressor frequency generally decreases at a set frequency reduction rate (for example, 2Hz / s). Therefore, the inner fan runs at a low speed while the compressor runs at a medium-high frequency, and the transmission sound at this time is the most obvious.

[0049] Step S140, if it is judged that the inner fan is switched from a wind gear higher than a first preset wind gear to a wind gear lower than a second preset wind gear, the running frequency of the compressor and the speed of the inner fan of the air conditioner are controlled according to a set control logic.

[0050] Specifically, the running frequency of the compressor is reduced to the compressor target frequency after the inner fan switches the wind gear at a set frequency reduction rate, and the inner fan is controlled to decrease in three stages to the target speed corresponding to the target wind gear; wherein in the first stage, the inner fan is controlled to run at a first speed reduction rate for a first time; in the second stage, the inner fan is controlled to run at the speed reached in the first stage for a second time; in the third stage, the inner fan is controlled to run at a first speed reduction rate for a third time, and the speed is reduced to the target speed corresponding to the target wind gear.

[0051] The first speed reduction rate is equal to the ratio of the speed reduction value of the inner fan to the target speed corresponding to the target wind level and the frequency reduction time of the compressor required to reduce to the target frequency after the inner fan switches the wind level at the set frequency reduction rate.

[0052] The time sum of the first time, the second time and the third time is greater than the frequency reduction time of the compressor required to reduce to the current target frequency at the set frequency reduction rate. Thus, the compressor reaches the target frequency first, and the inner fan reaches the target speed after the compressor reaches the target frequency, and the transmission sound of the compressor can be covered by the sound of the inner fan during the process. Preferably, the running time of the second stage, i.e., the second time, is longer, and the covering effect on the transmission sound will be better.

[0053] Each wind level has a corresponding inner fan speed, and when switching from a higher wind level to a lower wind level, the speed reduction value ΔR can be calculated. For each wind level, there is a different upper limit frequency of the compressor. After reducing the wind level, the upper limit frequency will also be reduced, and based on the upper limit frequency, the target frequency of the compressor after the inner fan switches the wind level can be calculated according to the indoor environment temperature, the outdoor environment temperature and the set temperature. The frequency reduction time T of the compressor required to reduce to the target frequency after the inner fan switches the wind level at the set frequency reduction rate is equal to the ratio of the difference ΔF between the current running frequency of the compressor and the target frequency (i.e., the frequency ΔF that the compressor needs to reduce) and the set frequency reduction rate v, i.e., T = ΔF / v, for example, if the set frequency reduction rate is 2 Hz / s, then the frequency reduction time T = ΔF / 2. When the inner fan switches the wind level, the speed reduction value of the inner fan to the target speed corresponding to the target wind level is ΔR (i.e., the speed value ΔR that the inner fan needs to reduce), and the first speed reduction rate is equal to ΔR / T.

[0054] In a specific embodiment, the first time is equal to the second time, which is equal to the third time, and is equal to 1 / 2 of the frequency reduction time of the compressor required to reduce to the current target frequency at the set frequency reduction rate. The frequency reduction time is the time required for the compressor to reduce a preset frequency value at the set frequency reduction rate. That is, the three stage times are equal to T / 2, then in the first T / 2 time (first stage), it is reduced at the rate of ΔR / T, in the second T / 2 time (second stage), it is stably running at the speed at the time of T / 2, and in the third T / 2 time (third stage), it is reduced to the target speed at the rate of ΔR / T again.

[0055] Preferably, before controlling the operation frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic, the deflector of the air conditioner is controlled to rotate from the current first angle to a preset angle; after controlling the operation frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic, the deflector of the air conditioner is controlled to return to the first angle from the preset angle. The preset angle is an angle at which the noise of the fan can cover the transmission sound. For example, the left and right wind sweeping angles of a general cabinet air conditioner are divided into five angles, and through experimental test, the noise of the wind is slightly larger at the left and right angles of the central angle of the deflector, and can cover the transmission sound.

[0056] For example, when the inner fan wind scale is changed from the super strong wind scale or the high wind scale to the low scale or the mute scale, the control logic is as follows:

[0057] A. The deflector is changed from the set angle to angle 2 or angle 4 (selecting the adjacent angle);

[0058] B. The frequency of the compressor to be reduced is △F, and the frequency reduction time is T=△F / 2;

[0059] C. The rotating speed of the inner fan to be reduced is △R, in the first T / 2 time, the rotating speed is reduced at the rate of △R / T, in the second T / 2 time, the rotating speed is stably operated at the rotating speed at the time of T / 2, and in the third T / 2 time, the rotating speed is reduced to the target rotating speed at the rate of △R / T again;

[0060] D. After the rotating speed of the inner fan is adjusted, the deflector returns to the set angle.

[0061] To clearly illustrate the technical scheme of the present application, the execution flow of the control method of the air conditioner provided by the present application is described below with one specific embodiment.

[0062] Figure 2 is a method schematic diagram of one specific embodiment of the control method of the air conditioner provided by the present application. As shown in Figure 2 When starting and entering the heating mode, or the heating mode in the automatic mode, the "noise reduction function" is automatically started, and this is the signal for entering the noise reduction control function. After the system receives the signal, when the stable operation is 10 minutes, or the target frequency or the exhaust temperature is reached, the air conditioner is controlled according to the control logic of the present application; the actual running wind scale is judged, and according to different wind scales, the following control is performed:

[0063] When the actual running mute scale, low scale or middle scale of the inner fan is used as the judgment basis of the temperature T of the inner heat exchanger (for example, the evaporator), the following actions are performed:

[0064] A. When 48℃<T≤52℃, the exhaust temperature is reduced by 5% (rounded calculation);

[0065] B. When 52℃ < T≤ 56℃, decrease the exhaust temperature by 8% (rounded calculation) and simultaneously decrease the actual running frequency of the compressor by 4Hz;

[0066] C. When T > 56℃, decrease the exhaust temperature by 10% (rounded calculation) and simultaneously decrease the actual running frequency of the compressor by 6Hz.

[0067] When the actual running high gear and super gear of the indoor fan, take the indoor heat exchanger (for example, evaporator) temperature T as the judgment reference, make the following actions:

[0068] A. When 50℃ < T≤ 56℃, decrease the exhaust temperature by 5% (rounded calculation) and simultaneously increase the actual running speed of the indoor fan by 5%;

[0069] B. When 56℃ < T≤ 60℃, decrease the exhaust temperature by 10% (rounded calculation) and simultaneously decrease the actual running frequency of the compressor by 2Hz and increase the speed of the indoor fan by 5%;

[0070] C. When T > 60℃, decrease the exhaust temperature by 12% (rounded calculation) and simultaneously decrease the actual running frequency of the compressor by 4Hz and increase the speed of the indoor fan by 10%.

[0071] The application also provides a control device of an air conditioner.

[0072] Figure 3 is a structural schematic diagram of an embodiment of the control device of the air conditioner provided by the application. As shown in Figure 3 The control device 100 comprises a first judgment unit 110 and a first control unit 120; and / or, the control device 100 comprises a second judgment unit 130 and a second control unit 140. Figure 3 Only the case that the first judgment unit 110, the first control unit 120, the second judgment unit 130 and the second control unit 140 all comprise is shown

[0073] The first judgment unit 110 is used for judging the current running gear of the indoor fan of the air conditioner after the air conditioner is started and enters the heating mode.

[0074] Preferably, the control device 100 further comprises a third judgment unit (not shown) which is used for judging whether the air conditioner satisfies at least one of the following conditions: the running time reaches a preset time, the running frequency of the compressor reaches a target frequency and the exhaust temperature of the compressor reaches a target exhaust temperature, before the first judgment unit 110 judges the current running gear of the air conditioner; and the first judgment unit 110 is further used for judging the current running gear of the air conditioner when the third judgment unit judges that the air conditioner satisfies at least one of the following conditions: the running time reaches a preset time, the running frequency of the compressor reaches a target frequency and the exhaust temperature of the compressor reaches a target exhaust temperature.

[0075] When the air conditioner is turned on and enters the heating mode or the heating mode in the automatic mode, the "noise reduction function" is automatically turned on, and this serves as a signal for entering the noise reduction control function. After receiving the signal for entering the noise reduction control function, when it is determined that the stable operation preset time length (for example, 10 minutes) is met, the operation frequency of the compressor reaches the target frequency, and the exhaust temperature of the compressor reaches the target exhaust temperature, the current operation wind level of the indoor fan of the air conditioner is determined.

[0076] According to the operation mode of the air conditioner, the "noise reduction" needs to be performed when the air conditioner reaches a stable operation state, so as to achieve the maximum optimization effect. The operation mode of the air conditioner is as follows: according to the detected inner ring and outer ring temperatures and the set temperature, the target frequency of the compressor and the target exhaust temperature of the compressor are correspondingly adjusted, so that the cooling capacity or heating capacity of the air conditioner can meet the user's demand. After the air conditioner is turned on, in order to ensure reliability, the operation frequency and the exhaust temperature of the compressor are gradually adjusted to rise, and finally reach a steady state; for example, it generally takes about 10 minutes to reach the target frequency or the target exhaust temperature. In practice, in order to ensure reliability, the actual operation frequency is limited by the controller temperature, current and the like, so that the frequency reduction cannot reach the target frequency, and therefore the running time of the preset time length is used as the standard.

[0077] The first control unit 120 is configured to control the air conditioner according to the current operation wind level of the indoor fan of the air conditioner and the temperature of the indoor heat exchanger determined by the first determination unit 110.

[0078] Specifically, the first control unit 120 controls the exhaust temperature of the air conditioner, the operation frequency of the compressor and / or the rotation speed of the indoor fan according to the current operation wind level of the indoor fan of the air conditioner and the temperature of the indoor heat exchanger. More specifically, the first control unit 120 controls the air conditioner according to the current operation wind level of the indoor fan of the air conditioner and the temperature of the indoor heat exchanger, including: when the current operation wind level of the indoor fan is the third preset wind level or lower than the third preset wind level, adjusting the exhaust temperature of the compressor and / or the operation frequency of the compressor of the air conditioner according to the temperature of the indoor heat exchanger of the air conditioner; when the current operation wind level of the indoor fan is the fourth preset wind level or higher than the fourth preset wind level, adjusting the exhaust temperature of the air conditioner, the operation frequency of the compressor and / or the rotation speed of the indoor fan according to the temperature of the indoor heat exchanger of the air conditioner; wherein the rotation speed of the indoor fan corresponding to the fourth preset wind level is higher than the rotation speed of the indoor fan corresponding to the third preset wind level.

[0079] For example, the wind levels of the indoor fan from low to high are respectively the silent mode, the low mode, the medium mode, the high mode and the super strong mode. The third preset wind level is the medium mode, and the fourth preset wind level is the high mode.

[0080] When the current wind level of the indoor fan is the silent, low or medium level, the indoor fan has a low rotating speed, and the compressor generally operates at a low or medium frequency (below 80 Hz), which causes the low-frequency "hum" sound to be easily transmitted from the outside to the indoor unit through the connecting pipe. There are two main reasons: 1. The compressor has a large load, which causes large vibration during operation, and the vibration is excited after being transmitted to the indoor heat exchanger (evaporator) through the pipe; 2. The compressor has a high exhaust temperature, and the high-pressure refrigerant flows into the evaporator, exciting the transmission sound.

[0081] With the indoor heat exchanger (evaporator) temperature level as the determination reference, the exhaust temperature of the compressor of the air conditioner and / or the operating frequency of the compressor is adjusted according to the indoor heat exchanger temperature. More specifically, the exhaust temperature of the compressor of the air conditioner and / or the operating frequency of the compressor is reduced according to the indoor heat exchanger temperature.

[0082] When the current wind level of the indoor fan is the high or super level, the indoor fan has a high rotating speed, and the compressor generally operates at a high frequency (above 80 Hz), which causes the high-frequency harsh sound to be easily transmitted from the outside to the indoor unit through the connecting pipe. The main reason is that the high-pressure refrigerant directly flows into the evaporator, exciting the transmission sound. Therefore, with the indoor heat exchanger (evaporator) temperature level as the determination reference, the exhaust temperature of the compressor of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the indoor fan is adjusted according to the indoor heat exchanger temperature. More specifically, the exhaust temperature of the compressor of the air conditioner and / or the operating frequency of the compressor is reduced and / or the rotating speed of the indoor fan is increased according to the indoor heat exchanger temperature.

[0083] When the current wind level of the indoor fan is the high or super level, the indoor fan has a high rotating speed, and the compressor generally operates at a high frequency (above 80 Hz), which causes the high-frequency harsh sound to be easily transmitted from the outside to the indoor unit through the connecting pipe. The main reason is that the high-pressure refrigerant directly flows into the evaporator, exciting the transmission sound. Therefore, with the indoor heat exchanger (evaporator) temperature level as the determination reference, the exhaust temperature of the compressor of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the indoor fan is adjusted according to the indoor heat exchanger temperature. More specifically, the exhaust temperature of the compressor of the air conditioner and / or the operating frequency of the compressor is reduced and / or the rotating speed of the indoor fan is increased according to the indoor heat exchanger temperature.

[0084] In some embodiments, when the current operation wind level of the indoor unit is the third preset wind level or lower, the first control unit adjusts the discharge temperature of the compressor and / or the operating frequency of the compressor according to the temperature of the heat exchanger of the indoor unit, which can specifically include: when the temperature of the heat exchanger of the indoor unit is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, the discharge temperature is controlled to decrease by the first preset discharge temperature value; when the temperature of the heat exchanger of the indoor unit is greater than the second preset temperature threshold and less than or equal to the third preset temperature threshold, the discharge temperature is controlled to decrease by the second preset discharge temperature value, and the operating frequency of the compressor is controlled to decrease by the first preset frequency value; when the temperature of the heat exchanger of the indoor unit is greater than the third preset temperature threshold, the discharge temperature is controlled to decrease by the third preset discharge temperature value, and the operating frequency of the compressor is controlled to decrease by the second preset frequency value. In one specific embodiment, the discharge temperature can be adjusted by adjusting the opening degree of the throttling element of the air conditioner, and by adjusting the opening degree of the throttling element, the circulating flow of the refrigerant is increased, and the discharge temperature is reduced.

[0085] The first preset temperature threshold is less than the second preset temperature threshold, and the second preset temperature threshold is less than the third temperature threshold. The first preset discharge temperature value is less than the second preset discharge temperature value, the second preset discharge temperature value is less than the third preset discharge temperature value, the first preset discharge temperature value can be specifically a first preset percentage of the current discharge temperature, the second preset discharge temperature value can be specifically a second preset percentage of the current discharge temperature, and the third preset discharge temperature value can be specifically a third preset percentage of the current discharge temperature. The first preset percentage is less than the second preset percentage, and the second preset percentage is less than the third preset percentage.

[0086] For example, the first preset percentage is 5%, the second preset percentage is 8%, and the third preset percentage is 10%. The first preset discharge temperature value is 48°C, the second preset discharge temperature value is 52°C, and the third preset discharge temperature value is 56°C. The first preset frequency value is 4Hz, and the second preset frequency value is 6Hz. When 48 < T≤ 52°C, the discharge temperature is reduced by 5%, when 52 < T≤ 56°C, the discharge temperature is reduced by 8% and the actual operating frequency of the compressor is reduced by 4Hz, and when T > 56°C, the discharge temperature is reduced by 10% and the actual operating frequency of the compressor is reduced by 6Hz.

[0087] In some embodiments, when the indoor fan is currently running at or above the fourth preset wind speed, the first control unit adjusts the discharge temperature of the compressor, the operating frequency of the compressor, and / or the rotating speed of the indoor fan according to the temperature of the heat exchanger of the indoor unit, including: when the temperature of the heat exchanger of the indoor unit is greater than a fourth preset temperature threshold and less than or equal to a fifth preset temperature threshold, the discharge temperature is controlled to decrease by a fourth preset discharge temperature value, and the rotating speed of the indoor fan is controlled to increase by a first preset rotating speed value; when the temperature of the heat exchanger of the indoor unit is greater than the fifth preset temperature threshold and less than or equal to a sixth preset temperature threshold, the discharge temperature is controlled to decrease by a fifth preset discharge temperature value, the operating frequency of the compressor is controlled to decrease by a third preset frequency value, and the rotating speed of the indoor fan is controlled to increase by the first preset rotating speed value; and when the temperature of the heat exchanger of the indoor unit is greater than the sixth preset temperature threshold, the discharge temperature is controlled to decrease by a sixth preset discharge temperature value, the operating frequency of the compressor is controlled to decrease by a fourth preset frequency value, and the rotating speed of the indoor fan is controlled to increase by a second preset rotating speed value.

[0088] The fourth preset temperature threshold is less than the fifth preset temperature threshold, and the fifth preset temperature threshold is less than the sixth preset temperature threshold; and the first preset rotating speed value is less than the second preset rotating speed value. The fourth preset discharge temperature value is less than the fifth preset discharge temperature value, and the fifth preset discharge temperature value is less than the sixth preset discharge temperature value. The first preset rotating speed value can be specifically a fourth preset percentage of the current rotating speed of the indoor fan, and the second preset rotating speed value can be specifically a fifth preset percentage of the current rotating speed of the indoor fan. The fourth preset percentage is less than the fifth preset percentage.

[0089] For example, the fourth preset percentage is 5%, the fifth preset percentage is 10%, the fourth preset discharge temperature value is 50℃, the fifth preset discharge temperature value is 56℃, and the sixth preset discharge temperature value is 60℃. The third preset frequency value is 2Hz, and the fourth preset frequency value is 4Hz. When 50 < T≤ 56℃, the discharge temperature is decreased by 5%, and the actual rotating speed of the indoor fan is increased by 5% at the same time; when 56 < T≤ 60℃, the discharge temperature is decreased by 10%, the actual operating frequency of the compressor is decreased by 2Hz, and the rotating speed of the indoor fan is increased by 5% at the same time; and when T > 60℃, the discharge temperature is decreased by 12%, the actual operating frequency of the compressor is decreased by 4Hz, and the rotating speed of the indoor fan is increased by 10% at the same time.

[0090] When the high gear and the super gear are running, the frequency of the compressor is generally high, and if the discharge temperature is high, the discharge pressure of the refrigerant will also be high, that is, the high-temperature and high-pressure refrigerant from the outdoor unit will impact into the indoor unit through the connecting pipe, which will excite the transmission sound. Reducing the discharge temperature can effectively reduce the discharge pressure and solve the transmission sound problem.

[0091] The second determining unit 130 is configured to determine whether the inner fan is switched from a wind level higher than the first preset wind level to a wind level lower than the second preset wind level when the inner fan of the air conditioner is switched in the heating mode.

[0092] When the wind level is switched from a higher wind level to a lower wind level, obvious transmission sound is generated. When a higher wind level is run, the compressor is run at a high frequency (above 80 Hz), and once the wind level is switched to a lower wind level, the inner fan speed is reduced at a relatively fast rate, and in order to ensure reliability, the compressor frequency is generally reduced at a set frequency reduction rate (for example, 2 Hz / s). Therefore, the inner fan is run at a low speed and the compressor is run at a medium-high frequency, and at this time, the transmission sound is most obvious.

[0093] The second control unit 140 is configured to control the running frequency of the compressor and the inner fan speed of the air conditioner according to a set control logic if the second determining unit 130 determines that the inner fan is switched from a wind level higher than the first preset wind level to a wind level lower than the second preset wind level.

[0094] Specifically, the running frequency of the compressor is controlled to decrease to a compressor target frequency after the inner fan is switched, and the inner fan is controlled to decrease to a target speed corresponding to the target wind level in three stages; in the first stage, the inner fan is controlled to run at a first speed reduction rate for a first time; in the second stage, the inner fan is controlled to run at the speed reached in the first stage for a second time; and in the third stage, the inner fan is controlled to run at the first speed reduction rate for a third time, and the speed is reduced to the target speed corresponding to the target wind level.

[0095] The first speed reduction rate is equal to the ratio of the speed reduction value of the inner fan speed reduced to the target speed corresponding to the target wind level to the frequency reduction time required for the compressor to decrease to the target frequency after the inner fan is switched according to the set frequency reduction rate.

[0096] The time sum of the first time, the second time and the third time is greater than the frequency reduction time required for the compressor to decrease to the current target frequency according to the set frequency reduction rate. Therefore, the compressor reaches the target frequency first, and the inner fan reaches the target speed after the compressor reaches the target frequency, and in the process, the transmission sound of the compressor can be covered by the sound of the inner fan. Preferably, the running time of the second stage, i.e., the second time, is longer, and the covering effect on the transmission sound will be better.

[0097] Each wind level has a corresponding inner fan rotating speed, when the wind level is changed from a higher level to a lower level, the rotating speed reduction value AR can be calculated. For each wind level, there is a different compressor upper limit frequency. When the wind level is reduced, the upper limit frequency will also be reduced, based on the upper limit frequency, the target frequency of the compressor after the inner fan changes the wind level can be calculated according to the indoor environment temperature, the outdoor environment temperature and the set temperature. The frequency reduction time T required for the compressor to reduce to the target frequency after the inner fan changes the wind level according to the set frequency reduction rate is equal to the difference value AF between the current operating frequency of the compressor and the target frequency (i.e. the frequency reduction value of the compressor is AF) and the ratio of the set frequency reduction rate v, i.e. T = AF / v, for example, if the set frequency reduction rate is 2 Hz / s, then the frequency reduction time T = AF / 2. When the inner fan changes the wind level, the rotating speed reduction value of the inner fan to the target rotating speed of the target wind level is AR (i.e. the rotating speed reduction value of the inner fan is AR), then the first rotating speed reduction rate is equal to AR / T.

[0098] In a specific embodiment, the first time is equal to the second time is equal to the third time, and is equal to 1 / 2 of the frequency reduction time required for the compressor to reduce to the current target frequency according to the set frequency reduction rate. The frequency reduction time is the time required for the compressor to reduce a preset frequency value according to the set frequency reduction rate. That is, the three stage times are equal to T / 2, then in the first T / 2 time (first stage), it is reduced at the rate of AR / T, in the second T / 2 time (second stage), it is stably operated at the rotating speed at the time of T / 2, and in the third T / 2 time (third stage), it is reduced again at the rate of AR / T to the target rotating speed.

[0099] Preferably, the control device 100 further comprises a third control unit (not shown) for controlling the air deflector of the air conditioner to change from the current first angle to a preset angle before the second control unit controls the operating frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic; and controlling the air deflector of the air conditioner to recover from the preset angle to the first angle after the second control unit controls the operating frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic. The preset angle is an angle at which the fan noise can mask the transmission sound. For example, the left and right wind sweeping angles of a general cabinet air conditioner are divided into 5 angles, and through experimental testing, the wind noise is slightly larger when the air deflector is at the central angle and the left and right angles, and can mask the transmission sound.

[0100] For example, when the inner fan wind level is changed from the super strong wind level or the high wind level to the low level or the silent level, the control logic is as follows:

[0101] A, the air deflector changes from the set angle to angle 2 or angle 4 (selecting the adjacent angle);

[0102] B, the frequency of the compressor needs to be reduced is △F, then the frequency reduction time is T=△F / 2;

[0103] C, the speed of the inner fan needs to be reduced is △R, in the first T / 2 time, it is reduced at the rate of △R / T, in the second T / 2 time, it is stably operated at the speed at the time of T / 2, in the third T / 2 time, it is reduced to the target speed at the rate of △R / T again;

[0104] D, after the speed of the inner fan is adjusted, the angle of the guide vane is restored.

[0105] The application also provides a storage medium corresponding to the control method of the air conditioner, which stores a computer program, and the program is executed by a processor to realize the steps of any of the foregoing methods.

[0106] The application also provides an air conditioner corresponding to the control method of the air conditioner, which comprises a processor, a memory, and a computer program stored on the memory and executable on the processor, and the processor executes the program to realize the steps of any of the foregoing methods.

[0107] The application also provides an air conditioner corresponding to the control device of the air conditioner, which comprises the control device of any of the foregoing air conditioners.

[0108] Accordingly, the scheme provided by the application adjusts the discharge temperature of the compressor, the operating frequency of the compressor, and / or the speed of the inner fan according to the current operating wind deflector of the inner fan of the air conditioner and the temperature of the heat exchanger of the inner fan, which can effectively solve the problem of the transmission of sound from the inner fan, without changing the original structure and configuration of the air conditioner, and solves the problem that the sound transmission of the outdoor unit of the air conditioner cannot be completely solved in the heating mode.

[0109] According to the technical scheme of the application, different control strategies are used in the stable operation state and the wind deflector switching process of the air conditioner, without adjusting the existing structure and configuration. By monitoring the current evaporator temperature, the discharge temperature, the frequency of the compressor, and the speed of the inner fan are adjusted, so that the transmission of sound from the inner fan is solved in the stable operation or the wind deflector switching process, and the user experience is comfortable. The problem that the sound transmission of the outdoor unit of the air conditioner cannot be completely solved in the heating mode is solved, and the problem of the transmission of sound from the air conditioner in the heating mode and when the wind deflector is switched from a high wind deflector to a low wind deflector is solved.

[0110] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on or transferred over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions can also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations. Also, as used herein, including in the claims, "or" as used in a list of items prefaced by "comprising" to indicate a disjunctive list means each single item in the list has been recited before "or" one or more additional disjunctive items also have been recited. However, "or" in such a phrase does not mean that the list is inclusive of at least one of the items. Further, as used herein, "comprising" is to be interpreted as including the more restrictive terms "consisting of" and "consisting essentially of."

[0111] In several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and other division manners can be used in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0112] The units described as separate components can or can not be physically separated, and the components of the control device can or can not be physical units, i.e. can be located in one place or can be distributed on a plurality of units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0113] The integrated units, if implemented in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the related art or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0114] The above merely illustrates the embodiments of the present application but should not be taken as limitations. Various changes and modifications can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A control method of an air conditioner, characterized by, Comprise: After the air conditioner is started and enters the heating mode, it is judged that the current running air damper of the indoor fan of the air conditioner; According to the current running air damper of the indoor fan of the air conditioner and the indoor heat exchanger temperature, the air conditioner is controlled; And / or, In the case that the air conditioner runs in the heating mode, when the indoor fan of the air conditioner switches the air damper, it is judged whether the indoor fan is switched from the air damper higher than the first preset air damper to the air damper lower than the second preset air damper, wherein the indoor fan speed corresponding to the first preset air damper is higher than the indoor fan speed corresponding to the second preset air damper; If it is judged that the indoor fan is switched from the air damper higher than the first preset air damper to the air damper lower than the second preset air damper, the running frequency of the compressor and the indoor fan speed of the air conditioner are controlled according to the set control logic; According to the current running air damper of the indoor fan of the air conditioner and the indoor heat exchanger temperature, the air conditioner is controlled, comprising: When the current running air damper of the indoor fan is the third preset air damper or lower than the third preset air damper, according to the indoor heat exchanger temperature of the air conditioner, the exhaust temperature of the compressor and / or the running frequency of the compressor of the air conditioner are adjusted, comprising: When the indoor heat exchanger temperature is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, the exhaust temperature is controlled to decrease by a first preset exhaust temperature value; When the indoor heat exchanger temperature is greater than the second preset temperature threshold and less than or equal to the third preset temperature threshold, the exhaust temperature is controlled to decrease by a second preset exhaust temperature value, and the running frequency of the compressor is controlled to decrease by a first preset frequency value; When the indoor heat exchanger temperature is greater than the third preset temperature threshold, the exhaust temperature is controlled to decrease by a third preset exhaust temperature value, and the running frequency of the compressor is controlled to decrease by a second preset frequency value; The first preset exhaust temperature value is less than the second preset exhaust temperature value; the second preset exhaust temperature value is less than the third preset exhaust temperature value; the first preset temperature threshold is less than the second preset temperature threshold, and the second preset temperature threshold is less than the third preset temperature threshold; When the current running air damper of the indoor fan is the fourth preset air damper or higher than the fourth preset air damper, according to the indoor heat exchanger temperature of the air conditioner, the exhaust temperature, the running frequency of the compressor and / or the indoor fan speed of the air conditioner are adjusted, comprising: When the indoor heat exchanger temperature is greater than the fourth preset temperature threshold and less than or equal to the fifth preset temperature threshold, the exhaust temperature is controlled to decrease by a fourth preset exhaust temperature value, and the indoor fan speed is controlled to increase by a first preset speed value; When the indoor heat exchanger temperature is greater than the fifth preset temperature threshold and less than or equal to the sixth preset temperature threshold, the exhaust temperature is controlled to decrease by a fifth preset exhaust temperature value, the running frequency of the compressor is controlled to decrease by a third preset frequency value, and the indoor fan speed is controlled to increase by a first preset speed value; When the indoor heat exchanger temperature is greater than the sixth preset temperature threshold, the exhaust temperature is controlled to decrease by a sixth preset exhaust temperature value, the running frequency of the compressor is controlled to decrease by a fourth preset frequency value, and the indoor fan speed is controlled to increase by a second preset speed value; The first preset rotation speed value is less than the second preset rotation speed value; the fourth preset exhaust temperature value is less than the fifth preset exhaust temperature value; the fifth preset exhaust temperature value is less than the sixth preset exhaust temperature value; the fourth preset temperature threshold is less than the fifth preset temperature threshold, and the fifth preset temperature threshold is less than the sixth preset temperature threshold. Wherein, the inner fan rotation speed corresponding to the fourth preset air volume is higher than the inner fan rotation speed corresponding to the third preset air volume. And / or, According to the set control logic, the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner are controlled, including: The operation frequency of the compressor is controlled to decrease to the target frequency of the compressor after the inner fan switches the air volume according to the set frequency reduction rate, and the inner fan is controlled to decrease to the target rotation speed corresponding to the target air volume in three stages.

2. The control method according to claim 1, characterized by, Wherein, In the first stage, the inner fan is controlled to operate at a first rotation speed reduction rate for a first time; In the second stage, the inner fan is controlled to operate at the rotation speed reached in the first stage for a second time; In the third stage, the inner fan is controlled to operate at a first rotation speed reduction rate for a third time, and the rotation speed is reduced to the target rotation speed corresponding to the target air volume. The total time of the first time, the second time and the third time is greater than the frequency reduction time required for the compressor to decrease to the current target frequency according to the set frequency reduction rate.

3. The control method according to claim 1 or 2, characterized by, Further comprising: Before judging the air volume currently operated by the inner fan of the air conditioner, it is judged whether the air conditioner satisfies at least one of the following conditions: the operation time reaches the preset time, the operation frequency of the compressor reaches the target frequency, and the exhaust temperature of the compressor reaches the target exhaust temperature; When it is judged that the air conditioner satisfies at least one of the following conditions: the operation time reaches the preset time, the operation frequency of the compressor reaches the target frequency, and the exhaust temperature of the compressor reaches the target exhaust temperature, the air volume currently operated by the inner fan of the air conditioner is judged.

4. The control method according to claim 1 or 2, characterized by, Further comprising: Before controlling the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner according to the set control logic, the deflector of the air conditioner is controlled to rotate from the current first angle to a preset angle; And, After controlling the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner according to the set control logic, the deflector of the air conditioner is controlled to recover from the preset angle to the first angle.

5. The control method according to claim 3, characterized by, Further comprising: Before controlling the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner according to the set control logic, the deflector of the air conditioner is controlled to rotate from the current first angle to a preset angle; And, After controlling the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner according to the set control logic, the deflector of the air conditioner is controlled to recover from the preset angle to the first angle.

6. A control device of an air conditioner, characterized by comprising: Comprising: A first judging unit is configured to judge the air volume currently operated by the inner fan of the air conditioner after the air conditioner is turned on and enters the heating mode; A first control unit is configured to control the air conditioner according to the air volume currently operated by the inner fan of the air conditioner judged by the first judging unit and the temperature of the inner heat exchanger; And / or, The second determining unit is configured to determine whether the inner fan is switched from a wind level higher than the first preset wind level to a wind level lower than the second preset wind level when the inner fan of the air conditioner is switched in the heating mode; The second control unit is configured to control the operating frequency of the compressor and the rotating speed of the inner fan of the air conditioner according to the set control logic if the second determining unit determines that the inner fan is switched from a wind level higher than the first preset wind level to a wind level lower than the second preset wind level; The first control unit controls the air conditioner according to the current operating wind level of the inner fan of the air conditioner and the temperature of the inner heat exchanger, including: When the current operating wind level of the inner fan is the third preset wind level or lower than the third preset wind level, the discharge temperature of the compressor and / or the operating frequency of the compressor of the air conditioner is adjusted according to the temperature of the inner heat exchanger of the air conditioner, including: When the temperature of the inner heat exchanger is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, the discharge temperature is controlled to decrease by a first preset discharge temperature value; When the temperature of the inner heat exchanger is greater than the second preset temperature threshold and less than or equal to the third preset temperature threshold, the discharge temperature is controlled to decrease by a second preset discharge temperature value, and the operating frequency of the compressor is controlled to decrease by a first preset frequency value; When the temperature of the inner heat exchanger is greater than the third preset temperature threshold, the discharge temperature is controlled to decrease by a third preset discharge temperature value, and the operating frequency of the compressor is controlled to decrease by a second preset frequency value; The first preset discharge temperature value is less than the second preset discharge temperature value, the second preset discharge temperature value is less than the third preset discharge temperature value, the first preset temperature threshold is less than the second preset temperature threshold, and the second preset temperature threshold is less than the third preset temperature threshold; When the current operating wind level of the inner fan is the fourth preset wind level or higher than the fourth preset wind level, the discharge temperature of the air conditioner, the operating frequency of the compressor and / or the rotating speed of the inner fan is adjusted according to the temperature of the inner heat exchanger of the air conditioner, including: When the temperature of the inner heat exchanger is greater than the fourth preset temperature threshold and less than or equal to the fifth preset temperature threshold, the discharge temperature is controlled to decrease by a fourth preset discharge temperature value, and the rotating speed of the inner fan is controlled to increase by a first preset rotating speed value; When the temperature of the inner heat exchanger is greater than the fifth preset temperature threshold and less than or equal to the sixth preset temperature threshold, the discharge temperature is controlled to decrease by a fifth preset discharge temperature value, the operating frequency of the compressor is controlled to decrease by a third preset frequency value, and the rotating speed of the inner fan is controlled to increase by a first preset rotating speed value; When the temperature of the inner heat exchanger is greater than the sixth preset temperature threshold, the discharge temperature is controlled to decrease by a sixth preset discharge temperature value, the operating frequency of the compressor is controlled to decrease by a fourth preset frequency value, and the rotating speed of the inner fan is controlled to increase by a second preset rotating speed value; The first preset rotation speed value is less than the second preset rotation speed value; the fourth preset exhaust temperature value is less than the fifth preset exhaust temperature value; the fifth preset exhaust temperature value is less than the sixth preset exhaust temperature value; the fourth preset temperature threshold is less than the fifth preset temperature threshold, and the fifth preset temperature threshold is less than the sixth preset temperature threshold. The fourth preset wind speed corresponds to a higher inner fan rotation speed than the third preset wind speed. And / or, The second control unit controls the operation frequency of the compressor and the rotation speed of the inner fan of the air conditioner according to the set control logic, including: Controlling the operation frequency of the compressor to decrease to the compressor target frequency after the inner fan switches the wind speed, and controlling the inner fan to decrease to the target rotation speed corresponding to the target wind speed in three stages.

7. The control device of claim 6, wherein Wherein, In the first stage, the inner fan is controlled to operate at a first rotation speed decrease rate for a first time; In the second stage, the inner fan is controlled to operate at the rotation speed reached in the first stage for a second time; In the third stage, the inner fan is controlled to operate at a first rotation speed decrease rate for a third time; The first rotation speed decrease rate is equal to the ratio of the rotation speed decrease value of the inner fan to the target rotation speed corresponding to the target wind speed to the frequency decrease time required for the compressor to decrease to the current target frequency according to the set frequency decrease rate; The sum of the first time and the third time is equal to the frequency decrease time required for the compressor to decrease to the current target frequency according to the set frequency decrease rate.

8. A storage medium, characterized by A computer program is stored thereon, and the program is executed by a processor to realize the steps of the method of any one of claims 1-5.

9. An air conditioner characterized by comprising: A processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to realize the steps of the method of any one of claims 1-5, or a control device as claimed in any one of claims 6-7.

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