Zero-wind frequency-limiting control method, device and air conditioner

Abstract

The present invention provides a zero-wind frequency limiting control method, device and air conditioner, which relate to the field of air conditioning technology. The zero-wind frequency limiting control method includes: when the air conditioner is in the first zero-wind mode, determining the maximum limit frequency based on the inner ring humidity value, the indoor wind speed and the maximum operating frequency. When the air conditioner is in the second zero-wind mode, determining the maximum limit frequency based on the inner ring humidity value, the indoor wind speed, the outer ring temperature value, the operating time and the maximum operating frequency. The zero-wind frequency limiting control device and air conditioner provided by the present invention can execute the above-mentioned zero-wind frequency limiting control method. The zero-wind frequency limiting control method, device and air conditioner provided by the present invention can improve the problem that the air conditioner is prone to condensation, which leads to the easy breeding of bacteria and affects the use of the air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a zero-wind frequency limiting control method, device and air conditioner. Background Art

[0002] In the prior art, during the operation of the air conditioner, in order to prevent the air flow blown out by the air conditioner from blowing directly onto the user, the air conditioner is equipped with a zero wind mode. In the zero wind mode, the air is discharged through the through holes on the air guide plate. The through holes on the air guide plate can break up the air flow, thereby weakening the flow speed of the air flow and reducing the air supply distance of the air flow to achieve the purpose of preventing direct blowing. However, when the zero wind mode is executed, the air conditioner directly acts on the air flow after heat exchange on the air guide plate. After turning on the zero wind mode, the air outlet volume is significantly reduced. A long period of zero wind mode will cause the air outlet temperature to drop, which will bring the risk of condensation dripping, such as the outer surface of the wind guide plate and the outer surface of the wind panel, which seriously affects the user experience. Summary of the Invention

[0003] The problem solved by the present invention is that air conditioners are prone to condensation, which affects user experience.

[0004] To solve the above problems, the present invention provides a zero-wind frequency limiting control method, which is applied to an air conditioner, wherein the air conditioner includes an air conditioner main body, a first air guide plate and a second air guide plate;

[0005] The air conditioner main body is provided with an air outlet channel;

[0006] The first air guide plate and the second air guide plate are both movably connected to the air conditioner main body, and the first air guide plate is located above the second air guide plate; the first air guide plate is used to open or close the first air outlet area of ​​the air outlet channel, and the second air guide plate is used to open or close the second air outlet area of ​​the air outlet channel, and the first air outlet area and the second air outlet area together form an air outlet of the air outlet channel;

[0007] The first air guide plate and the second air guide plate are both provided with through holes for air flow to pass through;

[0008] The air conditioner has a first zero wind mode and a second zero wind mode; when the air conditioner is in the first zero wind mode, the first air guide plate closes the first air outlet area and the second air guide plate closes the second air outlet area; when the air conditioner is in the second zero wind mode, the first air guide plate opens at least a portion of the first air outlet area and the second air guide plate closes the second air outlet area;

[0009] The zero-wind frequency limiting control method includes:

[0010] When the air conditioner is in the first zero wind mode, determining a maximum limit frequency according to an inner ring humidity value, an indoor wind speed level, and a maximum operating frequency, wherein the inner ring humidity value indicates the humidity of an indoor environment in which the indoor unit of the air conditioner is located, the indoor wind speed level indicates the gear position of the indoor unit fan of the air conditioner, and the maximum operating frequency indicates the maximum operating frequency of the compressor of the air conditioner;

[0011] When the air conditioner is in the second zero wind mode, the maximum limit frequency is determined based on the inner ring humidity value, the indoor wind speed, the outer ring temperature value, the operating time and the maximum operating frequency; wherein the outer ring temperature value represents the temperature of the external environment in which the outdoor unit of the air conditioner is located, and the operating time represents the time when the air conditioner operates in the cooling mode.

[0012] The zero-wind frequency limiting control method provided by the present invention has the following advantages over the prior art:

[0013] In this zero-wind frequency-limited control method, the inner loop humidity value can be used to determine whether the internal humidity is prone to condensation. The indoor windage reflects the heat exchange efficiency of the heat exchanger, which can be used to determine the heat exchanger's temperature, thereby determining whether a high temperature difference, which is conducive to condensation, is likely to form. Based on this, when the air conditioner is in the first zero-wind mode, the compressor's maximum frequency limit is adjusted based on the indoor windage and the external humidity, thereby reducing condensation. When the air conditioner is in the second zero-wind mode, indicating insufficient indoor cooling capacity, the air conditioner's operating time and the outer loop temperature value can be used to determine whether the air conditioner can provide sufficient cooling capacity. The compressor's maximum frequency limit is then adjusted based on the inner loop humidity value, the indoor windage, the outer loop temperature, and the operating time, thereby ensuring sufficient cooling capacity while reducing condensation. This approach can alleviate the problem of air conditioners being prone to condensation, which impacts the user experience, while ensuring sufficient cooling capacity is provided to the room.

[0014] Optionally, when the air conditioner is in the first zero wind state, the zero wind frequency limiting control method further includes:

[0015] If the inner ring humidity value is greater than the first humidity value, the maximum limit frequency of the compressor of the air conditioner is re-determined based on the indoor wind speed, the inner ring humidity value and the maximum operating frequency; wherein the indoor wind speed represents the gear position of the indoor fan of the air conditioner.

[0016] After the air conditioner reaches stable operation, if it enters the first zero wind state, it indicates that the indoor cooling capacity is sufficient. Based on this, it is no longer necessary to determine whether the air conditioner is providing sufficient cooling capacity based on the air conditioner's operating time. However, since the indoor air conditioner and the external humidity have a significant impact on the air conditioner's condensation, the maximum limit frequency of the compressor is adjusted based on the indoor air conditioner and the external humidity to achieve the purpose of reducing condensation.

[0017] Optionally, the indoor fan of the air conditioner has a second wind speed, a third wind speed, a fourth wind speed and a fifth wind speed with successively decreasing speeds; when the air conditioner is in the second zero wind speed state, the zero wind speed frequency limiting control method further includes:

[0018] receiving an operating time, wherein the operating time indicates a time during which the air conditioner operates in a cooling mode;

[0019] When the indoor unit fan of the air conditioner is at the fifth wind speed, determining the maximum limit frequency of the compressor of the air conditioner based on the operating time, the inner ring humidity value, and the maximum operating frequency; wherein the inner ring humidity value represents the humidity of the indoor environment in which the indoor unit of the air conditioner is located, and the maximum operating frequency represents the maximum operating frequency of the compressor;

[0020] When the indoor fan of the air conditioner is in the second, third, or fourth wind speed, the maximum frequency limit is determined based on the operating time, the inner ring humidity value, the outer ring temperature value, and the maximum operating frequency. The outer ring temperature value represents the temperature of the external environment in which the outdoor unit of the air conditioner is located. When the air conditioner is in the second zero wind speed state, the air volume of the air conditioner is affected to a certain extent. The operating time can be used to determine whether the cooling capacity output by the air conditioner is sufficient. Therefore, the frequency limit of the air conditioner can be adjusted based on the operating time. This can reduce the energy consumption of the air conditioner when the cooling capacity is sufficient, while also improving the operating stability of the air conditioner. Furthermore, the inner ring humidity value and the indoor wind speed can affect the condensation of the air conditioner. Based on this, adjusting the maximum frequency limit of the compressor based on the inner ring humidity value and the indoor wind speed can reduce condensation.

[0021] A zero-wind frequency limiting control device is applied to an air conditioner, wherein the air conditioner comprises an air conditioner main body, a first air guide plate and a second air guide plate;

[0022] The air conditioner main body is provided with an air outlet channel;

[0023] The first air guide plate and the second air guide plate are both movably connected to the air conditioner main body, and the first air guide plate is located above the second air guide plate; the first air guide plate is used to open or close the first air outlet area of ​​the air outlet channel, and the second air guide plate is used to open or close the second air outlet area of ​​the air outlet channel, and the first air outlet area and the second air outlet area together form an air outlet of the air outlet channel;

[0024] The first air guide plate and the second air guide plate are both provided with through holes for air flow to pass through;

[0025] The air conditioner has a first zero wind mode and a second zero wind mode; when the air conditioner is in the first zero wind mode, the first air guide plate closes the first air outlet area and the second air guide plate closes the second air outlet area; when the air conditioner is in the second zero wind mode, the first air guide plate opens at least a portion of the first air outlet area and the second air guide plate closes the second air outlet area;

[0026] The zero-wind frequency limiting control device comprises:

[0027] a first control module configured to determine, when the air conditioner is in the first zero-wind mode, a maximum limit frequency based on an inner ring humidity value, an indoor wind speed, and a maximum operating frequency, wherein the inner ring humidity value indicates the humidity of an indoor environment in which an indoor unit of the air conditioner is located, the indoor wind speed indicates a gear position of a fan of the indoor unit of the air conditioner, and the maximum operating frequency indicates a maximum operating frequency of a compressor of the air conditioner;

[0028] The second control module is used to determine the maximum limit frequency based on the inner ring humidity value, the indoor wind speed, the outer ring temperature value, the operating time and the maximum operating frequency when the air conditioner is in the second zero wind mode; wherein the outer ring temperature value represents the temperature of the external environment in which the outdoor unit of the air conditioner is located, and the operating time represents the time when the air conditioner turns on the second zero wind mode.

[0029] An air conditioner comprises an air conditioner main body, a first air guide plate, a second air guide plate and a controller;

[0030] The air conditioner main body is provided with an air outlet channel;

[0031] The first air guide plate and the second air guide plate are both movably connected to the air conditioner main body, and the first air guide plate is located above the second air guide plate; the first air guide plate is used to open or close the first air outlet area of ​​the air outlet channel, and the second air guide plate is used to open or close the second air outlet area of ​​the air outlet channel, and the first air outlet area and the second air outlet area together form an air outlet of the air outlet channel;

[0032] The first air guide plate and the second air guide plate are both provided with through holes for air flow to pass through;

[0033] The air conditioner has a first zero wind mode and a second zero wind mode; when the air conditioner is in the first zero wind mode, the first air guide plate closes the first air outlet area and the second air guide plate closes the second air outlet area; when the air conditioner is in the second zero wind mode, the first air guide plate opens at least a portion of the first air outlet area and the second air guide plate closes the second air outlet area;

[0034] The controller is used to execute the above-mentioned zero-wind frequency limiting control method.

[0035] The zero-wind frequency limiting control device and air conditioner provided by the present invention can execute the above-mentioned zero-wind frequency limiting control method. The beneficial effects of the zero-wind frequency limiting control device and air conditioner relative to the prior art are the same as the beneficial effects of the above-mentioned zero-wind frequency limiting control method relative to the prior art, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural diagram of the air conditioner provided in an embodiment of the present application in a first zero wind mode;

[0037] Figure 2 This is a structural schematic diagram of the air conditioner provided in an embodiment of the present application in the second zero wind mode;

[0038] Figure 3 This is a flow chart of switching to zero wind mode in the zero wind frequency limiting control method provided in an embodiment of the present application;

[0039] Figure 4 This is a flowchart of step S15 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0040] Figure 5 Flowchart of the zero-wind frequency limiting control method provided in the embodiment of this application

[0041] Figure 6 This is a flowchart of step S20 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0042] Figure 7 This is a specific step diagram of step S23 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0043] Figure 8 This is a flowchart of step S30 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0044] Figure 9 This is a flowchart of step S33 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0045] Figure 10 This is a flowchart of step S333 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0046] Figure 11 This is a flowchart of step S3333 in the zero-wind frequency limiting control method provided in an embodiment of the present application;

[0047] Figure 12 This is a functional module diagram of a zero-wind frequency limiting control device in an embodiment of the present application.

[0048] Description of reference numerals:

[0049] 10-air conditioner; 100-air conditioner body; 200-front panel; 210-air outlet chamber; 300-air outlet channel; 310-first air guide plate; 311-first air outlet area; 320-second air guide plate; 321-second air outlet area; 410-first control module; 420-timing module; 430-second control module; 440-third control module. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] The present application provides an air conditioner 10, which is installed indoors to provide indoor air conditioning when in operation. The air conditioner 10 provides indoor air conditioning by introducing airflow into the room. The air conditioning functions include, but are not limited to, temperature regulation, humidity regulation, fresh air generation, and dust removal and sterilization.

[0052] In the prior art, during the operation of the air conditioner 10, in order to prevent the airflow from the air conditioner 10 from directly blowing onto the user, the air conditioner 10 is equipped with a zero-wind mode. In zero-wind mode, air is discharged through the through-holes in the air guide plate. The through-holes in the air guide plate can break up the discharged airflow, thereby reducing the flow velocity and the air delivery distance of the airflow to achieve the purpose of preventing direct blowing. However, when the zero-wind mode is in effect, the airflow discharged by the air conditioner 10 directly acts on the air guide plate, resulting in a large amount of condensation on the air conditioner 10, which is prone to breeding bacteria and affecting the use of the air conditioner 10.

[0053] Based on this, in order to improve the above technical problems, in other words, to improve the problem that the zero wind mode of the air conditioner 10 in the prior art cannot guarantee a comfortable environment for the user for a long time, the air conditioner 10 of the present application is provided.

[0054] See also Figure 1 and Figure 2 In this embodiment, the air conditioner 10 includes an air conditioner main body 100, a front panel 200, a first air guide plate 310, and a second air guide plate 320. The front panel 200 is disposed on the front side of the air conditioner main body 100, and an air outlet chamber 210 is formed between the front panel 200 and the air conditioner main body 100. The air conditioner main body 100 is also provided with an air outlet duct 300, which is connected to the air outlet chamber 210, and the air outlet chamber 210 is located above the air outlet duct 300. Both the first air guide plate 310 and the second air guide plate 320 are movably connected to the air conditioner body 100. The first air guide plate 310 is located above the second air guide plate 320, and the front panel 200 is located above the first air guide plate 310. The first air guide plate 310 is used to open or close the first air outlet area 311 of the air outlet channel 300, and the second air guide plate 320 is used to open or close the second air outlet area 321 of the air outlet channel 300. The first air outlet area 311 and the second air outlet area 321 together form the air outlet of the air outlet channel 300. The front panel 200, the first air guide plate 310, and the second air guide plate 320 are each provided with through holes for airflow. The first air guide plate 310 and the second air guide plate 320 can be rotatably connected to the air conditioner body 100. Alternatively, the first air guide plate 310 and the second air guide plate 320 can be movably connected to the air conditioner body 100 by sliding, for example, using a structure such as a slide rail.

[0055] In addition, the air conditioner 10 has a first zero wind mode and a second zero wind mode; when the air conditioner 10 is in the first zero wind mode, the first air guide plate 310 closes the first air outlet area 311 and the second air guide plate 320 closes the second air outlet area 321; when the air conditioner 10 is in the second zero wind mode, the first air guide plate 310 opens at least part of the first air outlet area 311, and the second air guide plate 320 closes the second air outlet area 321.

[0056] When the air conditioner 10 is in the first zero-wind mode, part of the airflow from the air outlet duct 300 is discharged through the through-holes in the first and second air guide plates 310 and 320, while another part of the airflow is introduced into the air outlet chamber 210 and then discharged through the through-holes in the front panel 200. When the air conditioner 10 is in the second zero-wind mode, part of the airflow from the air outlet duct 300 is discharged through the through-holes in the first and second air guide plates 310 and 320, another part of the airflow is introduced into the air outlet chamber 210 and then discharged through the through-holes in the front panel 200, and another part of the airflow is blown directly out from at least a portion of the opened first air outlet area 311.

[0057] It is worth noting that during the process of directing airflow through the air outlet channel 300, the airflow in the air guide channel can be divided into an upper portion of airflow and a lower portion of airflow. The upper portion of airflow corresponds to the first air outlet area 311, and the lower portion of airflow corresponds to the second air outlet area 321. When the first air guide plate 310 closes the first air outlet area 311 and the second air guide plate 320 closes the second air outlet area 321, the majority of the airflow introduced into the air outlet chamber 210 comes from the upper portion of airflow. In other words, when the first air guide plate 310 opens at least a portion of the first air outlet area 311, the airflow introduced into the air outlet chamber 210 can be reduced, thereby reducing the amount of air discharged from the front panel 200. When the air conditioner 10 is turned on the second zero wind mode, since part of the first air outlet area 311 is opened, part of the air flow is directly blown out without being affected by the first air guide plate 310, thereby making the air outlet volume in the second zero wind mode greater than the air outlet volume in the first zero wind mode; in other words, compared with the first zero wind mode, the second zero wind mode can not only achieve the purpose of preventing direct blowing, but at the same time, the second zero wind mode can also reduce the air flow passing through the front panel 200, thereby achieving the purpose of preventing condensation on the front panel 200; and the second zero wind mode can also increase the air outlet volume, thereby improving the air conditioning capacity for the room.

[0058] In addition, in an embodiment of the present application, the air conditioner 10 further includes an inner ring temperature detection device, an inner ring humidity detection device, a timing device, an outer ring temperature detection device, and a controller. The inner ring temperature detection device and the inner ring humidity detection device are both located indoors to detect the inner ring temperature and inner ring humidity values, respectively; the outer ring temperature detection device is located outdoors, outside the indoor space, to detect the outer ring temperature; and the timing device is used for timing. The inner ring temperature detection device, the inner ring humidity detection device, the timing device, and the outer ring temperature detection device are all electrically connected to the controller to transmit detection signals to the controller.

[0059] The controller can be an integrated circuit chip with signal processing capabilities. The controller can be a general-purpose processor, including a central processing unit (CPU), a single-chip microcomputer, a microcontroller unit (MCU), a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), an embedded ARM, or other chips. The controller can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present invention.

[0060] In a feasible embodiment, the air conditioner 10 may further include a memory for storing program instructions that can be executed by the controller, for example, the zero-wind frequency limiting control device provided in the embodiment of the present application, the zero-wind frequency limiting control device provided in the embodiment of the present application includes at least one that can be stored in the memory in the form of software or firmware. The memory can be an independent external memory, including but not limited to random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), and electrically erasable read-only memory (EEPROM). The memory can also be integrated with the controller, for example, the memory can be integrated with the controller in the same chip.

[0061] Based on the air conditioner 10 provided above, in order to improve the technical problem in the prior art that the air conditioner 10 is prone to condensation, which leads to the easy breeding of bacteria and affects the use of the air conditioner 10, a zero-wind frequency limiting control method is also provided in the embodiment of the present application to achieve the purpose of improving indoor comfort.

[0062] It is worth noting that because the air output of the air conditioner 10 differs between the first and second zero-wind modes, the frequency limiting control of the compressor of the air conditioner 10 differs between the first and second zero-wind modes. Before introducing the frequency limiting control, the zero-wind frequency limiting control method provided in this embodiment also includes a method for controlling the air conditioner 10 to switch to the zero-wind mode, which is described below.

[0063] In this example, see Figure 3 , the method for switching to the zero wind mode in the zero wind frequency limiting control method includes:

[0064] S11 , controlling the air conditioner 10 to enter a first zero wind mode according to a zero wind instruction set by the user.

[0065] The user-set zero-wind command refers to a zero-wind command issued by the user via a smart terminal, remote control, the operation panel on the air conditioner 10, or a gesture. Upon receiving the zero-wind command, the controller controls the air conditioner 10 to enter the first zero-wind mode, specifically controlling the first and second air guide plates 310, 320 to close the air outlet channel 300. This ensures that the airflow from the air conditioner 10 is dispersed, preventing it from directly blowing onto the user.

[0066] S13. When the air conditioner 10 enters the first zero wind mode, start timing.

[0067] S15. After the timing duration reaches the first preset time, the air conditioner 10 is controlled to switch between the first zero wind mode and the second zero wind mode according to the inner ring temperature value, the set temperature value and the inner ring humidity value.

[0068] The inner loop temperature value represents the temperature of the internal environment of the air conditioner 10, and the inner loop temperature value is detected by the inner loop temperature detection device and sent to the controller; the set temperature value represents the target temperature set by the user, that is, the set temperature represents the target temperature that the user expects the indoor temperature to reach; the inner loop humidity value represents the humidity of the internal environment of the air conditioner 10, and the inner loop humidity value is detected by the inner loop humidity detection device and sent to the controller. Based on the comparison between the indoor temperature and the set temperature, it can be determined whether the comfort level of the indoor environment basically meets the user's needs. If the indoor environment basically meets the user's needs, the air conditioner 10 can be controlled to switch to the first zero wind state to ensure that the air flow does not blow directly on the user; if the indoor environment does not meet the user's needs, the air conditioner 10 can be controlled to switch to the second zero wind state, thereby improving the cooling capacity of the air conditioner 10 to ensure that the comfort level of the indoor environment is improved to meet the user's needs.

[0069] Optionally, the first preset time may be 1 min-5 min, in other words, the first preset time may be 1 min, 1.5 min, 2 min, 2.5 min, 3 min, 3.5 min, 4 min, 4.5 min or 5 min, etc. Preferably, the first preset time is 3 min.

[0070] When the air conditioner 10 is in the first zero-wind mode, its air output is affected, resulting in a reduction in the air conditioning effect provided by the air conditioner 10 to the room. However, when the air conditioner 10 is in the second zero-wind mode, a portion of the first air outlet area 311 is opened, which can improve the air conditioning effect on the room. Based on this, after the air conditioner 10 enters the first zero-wind mode for a first preset time, the operating state of the air conditioner 10 reaches a stable state. At this time, the indoor temperature and the set temperature value can be monitored, and the indoor humidity can be simultaneously monitored. Based on the indoor temperature, set temperature, and humidity, it can be determined whether the indoor comfort level is affected by the air conditioner 10 turning on the first zero-wind mode. The air conditioner 10 can be conveniently controlled to switch between the first zero-wind mode and the second zero-wind mode. While ensuring that the user is not directly blown, the switching between the first zero-wind mode and the second zero-wind mode ensures that the indoor comfort level can be guaranteed, thereby improving the user's comfort. This thereby improves the technical problem in the prior art that the zero-wind mode of the air conditioner 10 cannot provide a comfortable environment for the user for a long time.

[0071] Optionally, see Figure 4 In an embodiment of the present application, step S15 may include:

[0072] S151. When the air conditioner 10 is in the first zero wind mode, if the inner ring temperature value is greater than the first preset temperature value and the difference between the inner ring temperature value and the set temperature value is greater than the second preset temperature value; or if the inner ring humidity value is greater than the first preset humidity value, control the air conditioner 10 to switch to the second zero wind mode.

[0073] When the air conditioner 10 is in the first zero wind mode, if the inner ring temperature value is greater than the first preset temperature value, it means that the indoor temperature is too high, and at the same time, the difference between the inner ring temperature value and the set temperature value is greater than the second preset temperature value, which means that the indoor temperature is significantly different from the set temperature. Based on this, it is necessary to increase the air volume of the air conditioner 10 to facilitate the adjustment of the indoor temperature to the set temperature value, thereby improving user comfort. In addition, when the inner ring humidity value is greater than the first preset humidity value, it means that the indoor humidity is too high, and it is necessary to dehumidify the indoor air by increasing the air volume of the air conditioner 10. Based on this, in the above case, it is necessary to switch the air conditioner 10 to the second zero wind mode to improve indoor comfort.

[0074] Optionally, the first preset temperature value may be between 24°C and 27°C. In other words, the first preset temperature value may be 24°C, 25°C, 26°C, or 27°C, etc. The first preset temperature value is preferably 26°C. Furthermore, the second preset temperature value may be between 1°C and 3°C. In other words, the second preset temperature value may be 1°C, 2°C, or 3°C, etc. The second preset temperature value is preferably 2°C. The first preset humidity value may be between 60% and 75%. In other words, the first preset humidity value may be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, or 75%, etc. The first preset humidity value is preferably 70%.

[0075] S153. When the air conditioner 10 is in the second zero wind mode, if the difference between the inner ring temperature value and the set temperature value is less than or equal to the third preset temperature value; or if the inner ring humidity value is less than the second preset humidity value, the air conditioner 10 is controlled to switch to the first zero wind mode.

[0076] When the air conditioner 10 is in the second zero-wind mode, if the difference between the inner temperature and the set temperature is less than or equal to the third preset temperature, the indoor temperature is close to the user-set temperature, indicating a high level of indoor comfort. Furthermore, if the inner humidity is less than the second preset humidity, the indoor humidity is low, indicating a high level of indoor comfort. Therefore, in this situation, the air conditioner 10 can be controlled to switch to the first zero-wind mode to prevent direct airflow.

[0077] Optionally, the third preset temperature value may be between -1°C and 1°C. In other words, the third preset temperature value may be -1°C, 0°C, or 1°C, etc., wherein the third preset temperature value is preferably 0°C. The second preset humidity value may be between 70% and 80%. In other words, the second preset humidity value may be 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, or 80%, etc., wherein the second preset humidity value is preferably 75%. In addition, generally, the second preset humidity value is greater than or equal to the first preset humidity value.

[0078] Based on the zero-wind frequency-limiting control method provided above, the air conditioner 10 can switch between the first zero-wind mode and the second zero-wind mode based on the indoor comfort level, which can not only effectively achieve the purpose of preventing direct blowing, but also ensure that the indoor comfort level can meet user needs for a long time.

[0079] Optionally, see Figure 5In an embodiment of the present application, when the air conditioner 10 is performing zero-wind operation, in order to improve the problem that the air conditioner 10 is prone to condensation, which causes bacteria to grow easily and affects the use of the air conditioner 10, the zero-wind frequency limiting control method provided in the embodiment of the present application is as follows.

[0080] Step S20: When the air conditioner 10 is in the first zero wind mode, determine the maximum limit frequency according to the inner ring humidity value, the indoor wind speed and the maximum operating frequency.

[0081] Among them, the inner ring humidity value represents the humidity of the indoor environment where the indoor unit of the air conditioner 10 is located, the indoor wind gear represents the gear position of the indoor unit fan of the air conditioner 10, and the maximum operating frequency represents the maximum operating frequency of the compressor of the air conditioner 10.

[0082] Step S30: When the air conditioner 10 is in the second zero wind mode, the maximum limit frequency is determined according to the inner ring humidity value, the indoor wind speed, the outer ring temperature value, the operating time and the maximum operating frequency.

[0083] In this zero-wind frequency-limited control method, the inner loop humidity value can be used to determine whether the internal humidity is prone to condensation. The indoor windage can reflect the heat exchange efficiency of the heat exchanger, which can be used to determine the heat exchanger's temperature, thereby determining whether a high temperature difference, which is conducive to condensation, is likely to form. Therefore, when the air conditioner 10 is in the first zero-wind mode, the maximum frequency limit of the compressor is adjusted based on the indoor windage and the external humidity, thereby reducing condensation. When the air conditioner 10 is in the second zero-wind mode, indicating insufficient indoor cooling capacity, the operating time and the outer loop temperature value can be used to determine whether the air conditioner 10 can provide sufficient cooling capacity. The maximum frequency limit of the compressor is adjusted based on the inner loop humidity value, the indoor windage, the outer loop temperature, and the operating time, thereby ensuring sufficient cooling capacity and reducing condensation. This can alleviate the problem of condensation easily forming in the air conditioner 10, which affects the user experience, while ensuring sufficient cooling capacity is provided to the room.

[0084] Among them, see Figure 6 When the air conditioner 10 is in the first zero wind mode, step S20 includes:

[0085] S21 : If the inner loop humidity value is less than or equal to the first humidity value, the compressor operation is controlled with the maximum operating frequency of the compressor of the air conditioner 10 being the maximum limit frequency.

[0086] The inner humidity value represents the humidity of the indoor environment in which the indoor unit of the air conditioner 10 is located; the inner humidity value is detected by the inner humidity detection device and transmitted to the controller. It is worth noting that when the inner humidity value is less than or equal to the first humidity value, it indicates that the humidity of the external environment is low, and therefore, the humidity of the indoor environment is also low. Based on this, the compressor is controlled to operate at the maximum operating frequency as the maximum limit frequency to prevent the indoor humidity from decreasing and ensure indoor comfort. Of course, using the maximum operating frequency as the maximum limit frequency can also be regarded as not limiting the compressor frequency.

[0087] Optionally, the first humidity value may be 48%-52%. In other words, the first humidity value may be 48%, 49%, 50%, 51% or 52%, etc., wherein the first humidity value is preferably 50%.

[0088] S23: If the inner ring humidity value is greater than the first humidity value, redetermine the maximum limit frequency of the compressor according to the indoor air level, the inner ring humidity value, and the maximum operating frequency.

[0089] Whether the air conditioner 10 is prone to condensation can be determined based on the indoor wind speed and the inner ring humidity value, and the maximum limit frequency of the compressor can be adjusted based on this to reduce condensation in the air conditioner 10. Among them, the indoor wind speed represents the gear position of the indoor fan of the air conditioner 10.

[0090] Optionally, see Figure 6 In an embodiment of the present application, step S23 includes:

[0091] S231. Determine a first frequency limit ratio based on the indoor air level and the inner ring humidity value, and take the product of the maximum operating frequency and the first frequency limit ratio as the maximum frequency limit.

[0092] At any indoor wind speed, the higher the internal humidity, the smaller the frequency limit ratio. That is, when the indoor fan of the air conditioner 10 is at any speed, the higher the indoor humidity, the more likely condensation will form in the air conditioner 10. Therefore, a higher frequency limit for the compressor, i.e., a smaller frequency limit ratio, can lower the temperature of the heat exchanger in the indoor unit of the air conditioner 10, thereby reducing condensation in the air conditioner 10.

[0093] In this embodiment, the indoor fan of the air conditioner 10 has a first wind speed and a sixth wind speed with successively decreasing rotation speeds.

[0094] Wherein, step S231 includes:

[0095] When the indoor fan of the air conditioner 10 is at the first wind speed, if the inner ring humidity value is less than or equal to the second humidity value, the first frequency limiting ratio is determined to be the first ratio; if the inner ring humidity value is less than or equal to the third humidity value and greater than the second humidity value, the first frequency limiting ratio is determined to be the second ratio; if the inner ring humidity value is greater than the third humidity value, the first frequency limiting ratio is determined to be the third ratio. The first ratio, the second ratio, and the third ratio are all less than 1 and decrease in order.

[0096] Optionally, the first ratio may be 60%-75%, in other words, the first ratio may be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, or 75%, etc. The second ratio may be 35%-60%, in other words, the second ratio may be 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, or 60%, etc. The value of the third ratio may be 30%-35%. In other words, the third ratio may be 30%, 31%, 32%, 33%, 34% or 35%.

[0097] Alternatively, the second humidity value may be between 58% and 62%. In other words, the second humidity value may be between 58%, 59%, 60%, 61%, or 62%, and the second humidity value is preferably 60%. The third humidity value may be between 68% and 72%. In other words, the third humidity value may be between 68%, 69%, 70%, 71%, or 72%, and the third humidity value is preferably 70%.

[0098] In addition, when the indoor fan of the air conditioner 10 is at the sixth wind speed, if the inner ring humidity value is less than or equal to the second humidity value, the first frequency limiting ratio is determined to be the fourth ratio; if the inner ring humidity value is less than or equal to the third humidity value and greater than the second humidity value, the first frequency limiting ratio is determined to be the fifth ratio; if the inner ring humidity value is greater than the third humidity value, the first frequency limiting ratio is determined to be the sixth ratio, wherein the fourth ratio, the fifth ratio and the sixth ratio are all less than 1 and decrease in sequence.

[0099] Optionally, in an embodiment of the present application, the fourth ratio is smaller than the first ratio, the fifth ratio is smaller than the second ratio, and the sixth ratio is smaller than the third ratio. Since the speed of the indoor fan at the first wind speed is greater than the speed of the indoor fan at the sixth wind speed, the indoor fan provides a higher heat exchange efficiency to the heat exchanger at the first wind speed. Even when the operating frequency of the compressor is slightly higher, the heat exchanger can achieve better heat exchange, preventing the heat exchanger from being too low and easily condensing, that is, reducing condensation. The value of the fourth ratio can be 60%-75%. In other words, the fourth ratio can be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, or 75%, etc. The fifth ratio may be set between 35% and 60%. In other words, the fifth ratio may be set to 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, or 60%. The sixth ratio may be set to 30% and 35%. In other words, the sixth ratio may be set to 30%, 31%, 32%, 33%, 34%, or 35%.

[0100] It is worth noting that the above-mentioned first wind speed and sixth wind speed do not impose an absolute limit on the rotational speed of the indoor fan. It is sufficient that the rotational speed of the indoor fan at the first wind speed is higher than the rotational speed of the indoor fan at the sixth wind speed. Furthermore, in other embodiments of the present application, the above-mentioned "first wind speed" can also be split into multiple wind speeds from high to low according to the rotational speed, for example, high wind speed, medium-high wind speed, medium wind speed, medium-low wind speed and low wind speed, etc. Similarly, in some embodiments, the above-mentioned "sixth wind speed" can also be split, which will not be repeated here. Of course, in the case where the first wind speed is split, the frequency limiting control under any two wind speeds can refer to the frequency limiting control under the above-mentioned "first wind speed" and "sixth wind speed".

[0101] In addition, in the embodiment of the present application, when the air conditioner 10 is in the second zero wind mode, the air volume of the air conditioner 10 is different from the air volume of the air conditioner 10 in the first zero wind mode. Therefore, the frequency limiting control method of the air conditioner 10 for the compressor in the second zero wind mode is different from the frequency limiting control method of the air conditioner 10 for the compressor in the first zero wind mode. Figure 8 , step S30 includes:

[0102] S31. Receive the running time.

[0103] The operating time represents the time the air conditioner 10 is operating in cooling mode; in other words, the timing device begins timing when the air conditioner 10 enters cooling mode. The controller can directly obtain the operating time from the timing device. By timing the time the air conditioner is operating in cooling mode, the duration of the air conditioner's operation in cooling mode can be recorded, making it easier to determine whether the air conditioner is providing sufficient cooling capacity to the room.

[0104] S33. When the indoor fan of the air conditioner 10 is at the fifth wind speed, determine the maximum limit frequency of the compressor of the air conditioner 10 according to the operating time, the inner ring humidity value and the maximum operating frequency.

[0105] S35. When the indoor fan of the air conditioner 10 is at the second wind speed, the third wind speed or the fourth wind speed, the maximum limit frequency is determined according to the operating time, the inner ring humidity value, the outer ring temperature value and the maximum operating frequency.

[0106] The outer ring temperature value represents the temperature of the external environment where the outdoor unit of the air conditioner 10 is located. The outer ring temperature value is detected by the outer ring temperature detection device and sent to the controller.

[0107] Optionally, see Figure 8 , step S33 includes:

[0108] S331: If the running time does not reach the second preset time, the product of the seventh ratio and the maximum running frequency is used as the maximum limit frequency.

[0109] If the operating time does not reach the second preset time, it means that the cooling capacity provided by the air conditioner 10 to the indoor room is still insufficient. Based on this, the maximum limit frequency is adjusted to the product of the seventh ratio and the maximum operating frequency. This can reduce condensation while ensuring that the air conditioner 10 can provide sufficient cooling capacity.

[0110] Optionally, the second preset time may be set between 13 minutes and 17 minutes. In other words, the second preset time may be set between 13 minutes, 14 minutes, 15 minutes, 16 minutes, or 17 minutes, etc., wherein the second preset time is preferably set to 15 minutes. The seventh ratio may be set between 58% and 62%. In other words, the seventh ratio may be set between 58%, 59%, 60%, 61%, or 62%, etc., wherein the seventh ratio is preferably set to 60%.

[0111] S333: If the operating time is greater than or equal to the second preset time, determine a second frequency limit ratio according to the inner ring humidity value and the maximum operating frequency, and take the product of the second frequency limit ratio and the maximum operating frequency as the maximum frequency limit.

[0112] The higher the inner ring humidity value, the lower the second frequency limiting ratio. When the operating time reaches the second preset time, it indicates that the air conditioner 10 has been running for a sufficient amount of time to provide sufficient cooling capacity to the room. Based on this, the inner ring humidity can be used to determine the indoor humidity and limit the compressor frequency, thereby reducing condensation in the air conditioner 10. It is worth noting that the method for determining the value of the second frequency limiting ratio can be similar to that of the first frequency limiting ratio and will not be further described here.

[0113] In this example, see Figure 9 , step S35 includes:

[0114] S351: If the operating time does not reach the second preset time and the indoor fan of the air conditioner is at the third wind speed or the fourth wind speed, determine the maximum limit frequency based on the outer ring temperature value and the maximum operating frequency.

[0115] When the indoor fan of the air conditioner 10 is at the second speed, the maximum operating frequency is used as the maximum frequency limit. In other words, when the indoor fan speed is high, it indicates that the heat exchanger has good heat exchange efficiency, and in this case, the compressor frequency does not need to be limited. In addition, step S351 may include: when the indoor fan of the air conditioner 10 is at the third or fourth speed, if the outer ring temperature value is greater than or equal to the fifth preset temperature value, the maximum frequency limit is used as the maximum frequency limit, that is, the compressor does not need to be limited; if the outer ring temperature value is less than the fifth preset temperature value, the maximum frequency limit is the product of the eighth ratio and the maximum operating frequency.

[0116] Optionally, the eighth ratio may be set to 73%-77%. In other words, the eighth ratio may be set to 73%, 74%, 75%, 76%, or 77%, etc., wherein the eighth ratio is preferably set to 75%. The fifth preset temperature value may be set to 41°C-45°C. In other words, the fifth preset temperature value may be set to 41°C, 42°C, 43°C, 44°C, or 45°C, etc., wherein the fifth preset temperature value is preferably set to 43°C.

[0117] S353: If the operating time is greater than the second preset time and less than or equal to the third preset time, then when the indoor fan of the air conditioner 10 is at the third wind speed, the maximum frequency limit is determined based on the outer ring temperature value and the maximum operating frequency; when the indoor fan of the air conditioner 10 is at the fourth wind speed, the maximum frequency limit is determined based on the outer ring temperature value, the inner ring humidity value, and the maximum operating frequency;

[0118] Optionally, see Figure 10 , step S353 includes:

[0119] S302: When the indoor fan of the air conditioner 10 is at the third wind speed, if the outer ring temperature is less than the sixth preset temperature, the product of the ninth ratio and the maximum operating frequency is used as the maximum limit frequency.

[0120] Optionally, the sixth preset temperature value may be 41° C.-45° C., in other words, the sixth preset temperature value may be 41° C., 42° C., 43° C., 44° C., or 45° C., etc., wherein the sixth preset temperature value is preferably 43° C. In addition, the value of the ninth ratio may be 73%-77%, in other words, the value of the ninth ratio may be 73%, 74%, 75%, 76%, or 77%, etc., wherein the value of the ninth ratio is preferably 75%.

[0121] S303. When the indoor fan of the air conditioner 10 is at the fourth wind speed, if the outer ring temperature value is less than the seventh preset temperature value, determine the fourth frequency limit ratio based on the inner ring humidity value, and take the product of the fourth frequency limit ratio and the maximum operating frequency as the maximum frequency limit.

[0122] The higher the inner ring humidity value is, the smaller the fourth frequency limit ratio is. The determination of the fourth frequency limit ratio can refer to the determination of the first frequency limit ratio, which will not be repeated here.

[0123] Optionally, in an embodiment of the present application, when the indoor fan of the air conditioner 10 is at the second wind speed, the highest operating frequency is used as the maximum limit frequency.

[0124] S355: If the operating time is greater than the third preset time and the outer ring temperature is less than the fourth preset temperature, determine the third frequency limit ratio based on the inner ring humidity, and take the product of the third frequency limit ratio and the maximum operating frequency as the maximum frequency limit.

[0125] The higher the inner ring humidity value is, the smaller the third frequency limiting ratio is. Optionally, the determination of the third frequency limiting ratio can refer to the determination of the first frequency limiting ratio, which will not be described in detail here.

[0126] Optionally, the value of the third preset time can be 40min-50min. In other words, the value of the third preset time can be 40min, 41min, 42min, 43min, 44min, 45min, 46min, 47min, 48min, 49min or 50min, etc., among which the value of the third preset time is preferably 45min.

[0127] In the embodiments of the present application, the first frequency limiting ratio, the second frequency limiting ratio, the third frequency limiting ratio, and the fourth frequency limiting ratio are determined based on the interval defined by the first humidity value, the second humidity value, and the third humidity value. It should be understood that in other embodiments of the present application, any humidity interval defined by the first humidity value, the second humidity value, and the third humidity value can also be divided into multiple humidity intervals according to actual conditions. Correspondingly, when any of the above-mentioned humidity intervals is divided into multiple intervals, the range of the frequency limiting ratio corresponding to the above-mentioned humidity interval can also be divided into multiple corresponding ratio intervals. For example, taking the interval defined by the first humidity value and the second humidity value as an example, this interval can also be divided into an interval defined by the first humidity value and the fourth humidity value and an interval defined by the fourth humidity value and the second humidity value. The fourth humidity value can be between 53% and 57%. In other words, the fourth humidity value can be 53%, 54%, 55%, 56%, or 57%, etc., with 55% being preferred. In this case, the interval represented by the first ratio corresponding to the interval defined by the first and second humidity values ​​can be divided into an interval of 60%-65% and an interval of 65%-75%. Furthermore, the interval defined by the first and fourth humidity values ​​corresponds to the interval of 60%-65%, and the interval defined by the fourth and second humidity values ​​corresponds to the interval of 65%-75%. It is sufficient that the intervals are divided so that the greater the humidity, the smaller the frequency limit ratio.

[0128] It is worth noting that in the above-mentioned embodiment, when the air conditioner 10 is in the first zero wind state, the air conditioner's indoor unit wind speed is divided into the first wind speed and the sixth wind speed; and when the air conditioner 10 is in the second zero wind state, the air conditioner's indoor unit wind speed is divided into the second wind speed to the fifth wind speed. In some embodiments, the sixth wind speed and the fifth wind speed can refer to the same wind speed; and the fan speed range included in the first wind speed can be the same as the fan speed range included in the second wind speed to the fourth wind speed. Of course, in other embodiments, the first wind speed to the sixth wind speed can also be different. In other words, in other embodiments, the air conditioner 10 can independently control the indoor unit fan of the air conditioner 10 to operate at different gears when it is in the first zero wind state and the second zero wind state.

[0129] Among them, the cooling capacity provided by the air conditioner 10 to the indoor room is different under different operating times. In order to ensure that the air conditioner 10 can provide sufficient cooling capacity to the indoor room, different frequency limiting steps can be entered according to the length of the operating time to reduce condensation while ensuring sufficient cooling capacity.

[0130] It is worth noting that when the compressor operates at a high frequency, the temperature of the heat exchanger in the indoor unit of the air conditioner 10 is low. In this case, increasing the gear of the indoor unit's fan helps improve heat exchange efficiency, thereby preventing the heat exchanger temperature from being too low. This can prevent the temperature of the inner side of the front panel 200, the first air guide plate 310, and the second air guide plate 320, which are directly exposed to the airflow, from being too low, thereby reducing condensation on the front panel 200, the first air guide plate 310, and the second air guide plate 320. Based on this, when the fan gear is high, the maximum limit frequency can be increased to ensure the cooling capacity provided by the air conditioner 10, thereby ensuring user comfort. Correspondingly, when the gear of the indoor unit fan is low, if the maximum limit frequency of the compressor is high, the compressor will operate at a higher operating frequency, resulting in a lower temperature of the indoor unit's heat exchanger, and the wind speed provided by the indoor unit fan is not sufficient to provide efficient heat exchange efficiency, which will cause the temperature of the heat exchanger to be too low, and condensation will easily form in the air conditioner 10; based on this, when the gear of the indoor unit fan is low, the maximum limit frequency of the compressor can be reduced, which can reduce condensation in the air conditioner 10.

[0131] In addition, when the inner ring humidity is high, it means that the indoor humidity is high. At this time, if the operating frequency of the compressor is increased, the temperature of the heat exchanger will be too low, which will easily cause the moisture in the air flow to condense. Based on this, when the indoor humidity is high, the maximum limit frequency of the compressor is lowered to reduce the operating frequency of the compressor, which can reduce condensation in the air conditioner 10.

[0132] In this embodiment, under the same environmental conditions, the maximum frequency limit of the air conditioner 10 in the first zero wind state is lower than the maximum frequency limit of the air conditioner 10 in the second zero wind state. It can also be considered that, under the same environmental conditions, the frequency limit ratio of the air conditioner 10 in the first zero wind state is lower than the frequency limit ratio of the air conditioner 10 in the second zero wind state.

[0133] In order to implement the possible steps of the zero-wind frequency limiting control method provided in the above embodiments, please refer to Figure 12 , Figure 12 The following figure shows a functional module diagram of a zero-wind frequency limiting control device provided in an embodiment of the present application. The zero-wind frequency limiting control device is applied to an air conditioner 10 and is used to execute the above-mentioned zero-wind frequency limiting control method. It should be noted that the basic principles and technical effects of the zero-wind frequency limiting control device provided in this embodiment are substantially the same as those of the above-mentioned embodiment. For the sake of simplicity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above-mentioned embodiment.

[0134] The zero-wind frequency limiting control device includes a first control module 410 and a second control module 430 .

[0135] The first control module 410 is used to determine the maximum limit frequency based on the inner ring humidity value, the indoor wind speed and the maximum operating frequency when the air conditioner is in the first zero wind mode. The inner ring humidity value indicates the humidity of the indoor environment in which the indoor unit of the air conditioner is located, the indoor wind speed indicates the gear position of the indoor unit fan of the air conditioner, and the maximum operating frequency indicates the maximum operating frequency of the air conditioner compressor.

[0136] Optionally, the first control module 410 is used to execute step S20 and its sub-steps in the above-mentioned figures to achieve corresponding technical effects.

[0137] The second control module 430 is used to determine the maximum limit frequency based on the inner ring humidity value, indoor wind speed, outer ring temperature value, operating time and maximum operating frequency when the air conditioner is in the second zero wind mode; wherein the outer ring temperature value represents the temperature of the external environment in which the outdoor unit of the air conditioner is located, and the operating time represents the time when the air conditioner is turned on the second zero wind mode.

[0138] Optionally, the second control module 430 is used to execute step S30 and its sub-steps in the above-mentioned figures to achieve corresponding technical effects.

[0139] It is worth noting that, for the above-mentioned zero-wind mode switching control method for the air conditioner 10 during zero-wind operation, the zero-wind frequency limiting control device can also include a third control module 440. The third control module 440 can be used to execute steps S11 to S15 in the above-mentioned figures and the sub-steps of each step to achieve corresponding technical effects.

[0140] In summary, the zero-wind frequency limiting control method, device, and air conditioner 10 provided in the embodiments of the present application can control the air conditioner 10 to switch between a first zero-wind mode and a second zero-wind mode, thereby ensuring effective air conditioning for indoor users while preventing direct airflow to the users. Furthermore, this can improve the prior art in which the zero-wind mode of the air conditioner 10 cannot provide a comfortable user environment for a long period of time. Furthermore, by executing corresponding compressor frequency limiting methods in the first and second zero-wind modes, condensation in the air conditioner 10 can be reduced while ensuring sufficient cooling capacity for the indoor environment, while also reducing energy consumption and improving the operational stability of the air conditioner 10.

[0141] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a portion of code, and the module, program segment or a portion of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0142] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0143] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0144] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A zero-wind frequency-limiting control method, applied to an air conditioner (10), characterized in that: The air conditioner (10) comprises an air conditioner main body (100), a first air guide plate (310) and a second air guide plate (320); The air conditioner main body (100) is provided with an air outlet channel (300); The first air guide plate (310) and the second air guide plate (320) are both movably connected to the air conditioner main body (100), and the first air guide plate (310) is located above the second air guide plate (320); the first air guide plate (310) is used to open or close the first air outlet area (311) of the air outlet channel (300), and the second air guide plate (320) is used to open or close the second air outlet area (321) of the air outlet channel (300); the first air outlet area (311) and the second air outlet area (321) together form the air outlet of the air outlet channel (300); The first air guide plate (310) and the second air guide plate (320) are both provided with through holes for airflow to pass through; The air conditioner (10) has a first zero wind mode and a second zero wind mode; when the air conditioner (10) is in the first zero wind mode, the first air guide plate (310) closes the first air outlet area (311) and the second air guide plate (320) closes the second air outlet area (321); when the air conditioner (10) is in the second zero wind mode, the first air guide plate (310) opens at least a portion of the first air outlet area (311) and the second air guide plate (320) closes the second air outlet area (321); The zero-wind frequency limiting control method includes: When the air conditioner (10) is in the first zero wind mode, the maximum limit frequency is determined according to the inner ring humidity value, the indoor wind speed and the maximum operating frequency, wherein the inner ring humidity value represents the humidity of the indoor environment in which the indoor unit of the air conditioner (10) is located, the indoor wind speed represents the gear position of the indoor unit fan of the air conditioner (10), and the maximum operating frequency represents the maximum operating frequency of the compressor of the air conditioner (10); When the air conditioner (10) is in the second zero-wind mode, the maximum limit frequency is determined based on the inner ring humidity value, the indoor wind speed, the outer ring temperature value, the operating time, and the maximum operating frequency; wherein the outer ring temperature value represents the temperature of the external environment in which the outdoor unit of the air conditioner (10) is located, and the operating time represents the time when the air conditioner (10) operates in the cooling mode.

2. The zero-wind frequency limiting control method according to claim 1, characterized in that: When the air conditioner (10) is in the first zero-wind mode, the zero-wind frequency limiting control method further comprises: If the inner ring humidity value is greater than the first humidity value, the maximum limit frequency of the compressor of the air conditioner is re-determined according to the indoor air level, the inner ring humidity value and the maximum operating frequency.

3. The zero-wind frequency limiting control method according to claim 2, characterized in that: The step of re-determining the maximum limiting frequency of the compressor according to the indoor air level, the inner ring humidity value and the maximum operating frequency includes: The first frequency limit ratio is determined based on the indoor wind speed and the inner ring humidity value, and the product of the maximum operating frequency and the first frequency limit ratio is taken as the maximum limit frequency. Among them, at any indoor wind speed, the larger the inner ring humidity value, the smaller the first frequency limit ratio.

4. The zero-wind frequency limiting control method according to claim 3, characterized in that: The indoor fan of the air conditioner (10) has a first wind speed and a sixth wind speed with successively decreasing rotation speeds; When the air conditioner is at the first wind speed, if the inner ring humidity value is less than or equal to the second humidity value, the first frequency limiting ratio is determined to be the first ratio; if the inner ring humidity value is less than or equal to the third humidity value and greater than the second humidity value, the first frequency limiting ratio is determined to be the second ratio; if the inner ring humidity value is greater than the third humidity value, the first frequency limiting ratio is determined to be the third ratio; wherein the first ratio, the second ratio, and the third ratio are all less than 1 and decrease in sequence; when the air conditioner is at the sixth wind speed, if the inner ring humidity value is less than or equal to the second humidity value, the first frequency limiting ratio is determined to be the fourth ratio; if the inner ring humidity value is less than or equal to the third humidity value and greater than the second humidity value, the first frequency limiting ratio is determined to be the fifth ratio; and if the inner ring humidity value is greater than the third humidity value, the first frequency limiting ratio is determined to be the sixth ratio; Among them, the fourth ratio, the fifth ratio and the sixth ratio are all less than 1 and decrease in sequence; the fourth ratio is less than the first ratio; the fifth ratio is less than the second ratio; and the sixth ratio is less than the third ratio.

5. The zero-wind frequency limiting control method according to claim 1, characterized in that: The indoor fan of the air conditioner (10) has a second wind speed, a third wind speed, a fourth wind speed and a fifth wind speed with successively decreasing speeds; when the air conditioner (10) is in the second zero wind mode, the zero wind frequency limiting control method further comprises: Receive running time; When the indoor fan of the air conditioner (10) is at the fifth wind speed, determining the maximum limiting frequency of the compressor of the air conditioner (10) according to the operating time, the inner ring humidity value and the maximum operating frequency; When the indoor fan of the air conditioner (10) is at the second wind speed, the third wind speed or the fourth wind speed, the maximum limit frequency is determined based on the operating time, the inner ring humidity value, the outer ring temperature value and the maximum operating frequency.

6. The zero-wind frequency limiting control method according to claim 5, characterized in that: When the indoor fan of the air conditioner (10) is at the fifth wind speed, the step of determining the maximum limit frequency of the compressor of the air conditioner (10) according to the operating time, the inner ring humidity value and the maximum operating frequency comprises: if the operating time does not reach the second preset time, multiplying the seventh ratio and the maximum operating frequency as the maximum limit frequency; If the operating time is greater than or equal to the second preset time, the second frequency limiting ratio is determined based on the inner ring humidity value and the maximum operating frequency, and the product of the second frequency limiting ratio and the maximum operating frequency is the maximum limiting frequency; wherein, the higher the inner ring humidity value, the lower the second frequency limiting ratio.

7. The zero-wind frequency limiting control method according to claim 5, characterized in that: When the indoor fan of the air conditioner (10) is at the second wind speed, the third wind speed or the fourth wind speed, the step of determining the maximum limit frequency based on the operating time, the inner ring humidity value, the outer ring temperature value and the maximum operating frequency includes: If the operating time does not reach the second preset time and the indoor fan of the air conditioner is at the third wind speed or the fourth wind speed, determining the maximum limit frequency according to the outer ring temperature value and the maximum operating frequency; If the operating time is greater than the second preset time and less than or equal to the third preset time, then when the indoor fan of the air conditioner (10) is at the third wind speed, the maximum limit frequency is determined based on the outer ring temperature value and the maximum operating frequency; when the indoor fan of the air conditioner (10) is at the fourth wind speed, the maximum limit frequency is determined based on the outer ring temperature value, the inner ring humidity value and the maximum operating frequency; If the operating time is greater than the third preset time and the outer ring temperature value is less than the fourth preset temperature value, the third frequency limiting ratio is determined based on the inner ring humidity value, and the product of the third frequency limiting ratio and the maximum operating frequency is taken as the maximum limiting frequency; the higher the inner ring humidity value, the smaller the third frequency limiting ratio.

8. The zero-wind frequency limiting control method according to claim 7, characterized in that: If the operating time does not reach the second preset time and the indoor fan of the air conditioner is at the third wind speed or the fourth wind speed, the step of determining the maximum limit frequency according to the outer ring temperature value and the maximum operating frequency includes: If the outer ring temperature value is less than the fifth preset temperature value, the product of the eighth ratio and the maximum operating frequency is used as the maximum limit frequency.

9. The zero-wind frequency limiting control method according to claim 7, characterized in that: If the operating time is greater than the second preset time and less than or equal to the third preset time, then when the indoor fan of the air conditioner (10) is at the third wind speed, the step of determining the maximum limit frequency based on the outer ring temperature value and the maximum operating frequency includes: If the outer ring temperature value is less than a sixth preset temperature value, the product of a ninth ratio and the maximum operating frequency is used as the maximum limit frequency.

10. The zero-wind frequency limiting control method according to claim 7, characterized in that: If the operating time is greater than the second preset time and less than or equal to the third preset time, when the indoor fan of the air conditioner (10) is at the fourth wind speed, the step of determining the maximum limit frequency based on the outer ring temperature value, the inner ring humidity value and the maximum operating frequency includes: If the outer ring temperature value is less than the seventh preset temperature value, the fourth frequency limit ratio is determined according to the inner ring humidity value, and the product of the fourth frequency limit ratio and the maximum operating frequency is taken as the maximum frequency limit; wherein, the higher the inner ring humidity value, the smaller the fourth frequency limit ratio.

11. A zero-wind frequency limiting control device, characterized in that: Applicable to an air conditioner (10), the air conditioner (10) comprising an air conditioner main body (100), a first air guide plate (310) and a second air guide plate (320); The air conditioner main body (100) is provided with an air outlet channel (300); The first air guide plate (310) and the second air guide plate (320) are both movably connected to the air conditioner main body (100), and the first air guide plate (310) is located above the second air guide plate (320); the first air guide plate (310) is used to open or close the first air outlet area (311) of the air outlet channel (300), and the second air guide plate (320) is used to open or close the second air outlet area (321) of the air outlet channel (300); the first air outlet area (311) and the second air outlet area (321) together form the air outlet of the air outlet channel (300); The first air guide plate (310) and the second air guide plate (320) are both provided with through holes for airflow to pass through; The air conditioner (10) has a first zero wind mode and a second zero wind mode; when the air conditioner (10) is in the first zero wind mode, the first air guide plate (310) closes the first air outlet area (311) and the second air guide plate (320) closes the second air outlet area (321); when the air conditioner (10) is in the second zero wind mode, the first air guide plate (310) opens at least a portion of the first air outlet area (311) and the second air guide plate (320) closes the second air outlet area (321); The zero-wind frequency limiting control device comprises: A first control module (410) is configured to determine a maximum limiting frequency based on an inner ring humidity value, an indoor wind speed, and a maximum operating frequency when the air conditioner (10) is in the first zero wind mode, wherein the inner ring humidity value represents the humidity of an indoor environment in which an indoor unit of the air conditioner (10) is located, the indoor wind speed represents the gear position of a fan of the indoor unit of the air conditioner (10), and the maximum operating frequency represents the maximum operating frequency of a compressor of the air conditioner (10); A second control module (430) is configured to determine the maximum limit frequency based on the inner ring humidity value, the indoor wind speed, the outer ring temperature value, the operating time, and the maximum operating frequency when the air conditioner (10) is in the second zero wind mode; wherein the outer ring temperature value represents the temperature of the external environment in which the outdoor unit of the air conditioner (10) is located, and the operating time represents the time when the air conditioner (10) is turned on in the second zero wind mode.

12. An air conditioner, characterized in that: It comprises an air conditioner main body (100), a first air guide plate (310), a second air guide plate (320) and a controller; The air conditioner main body (100) is provided with an air outlet channel (300); The first air guide plate (310) and the second air guide plate (320) are both movably connected to the air conditioner main body (100), and the first air guide plate (310) is located above the second air guide plate (320); the first air guide plate (310) is used to open or close the first air outlet area (311) of the air outlet channel (300), and the second air guide plate (320) is used to open or close the second air outlet area (321) of the air outlet channel (300); the first air outlet area (311) and the second air outlet area (321) together form the air outlet of the air outlet channel (300); The first air guide plate (310) and the second air guide plate (320) are both provided with through holes for airflow to pass through; The air conditioner (10) has a first zero wind mode and a second zero wind mode; when the air conditioner (10) is in the first zero wind mode, the first air guide plate (310) closes the first air outlet area (311) and the second air guide plate (320) closes the second air outlet area (321); when the air conditioner (10) is in the second zero wind mode, the first air guide plate (310) opens at least a portion of the first air outlet area (311) and the second air guide plate (320) closes the second air outlet area (321); The controller is used to execute the zero-wind frequency limiting control method described in any one of claims 1 to 10.

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