Control method and device for air conditioner, and air conditioner

Abstract

The present application relates to the technical field of smart home appliances. A control method for an air conditioner is disclosed. The control method includes: obtaining the current bottom temperature of the air conditioner evaporator; when the current bottom temperature of the evaporator reaches a preset condition, obtaining the current wind speed value on the leeward side of the evaporator; and determining the anti-freeze strategy based on the current wind speed detection value. By obtaining the bottom temperature, it is possible to determine more timely whether the evaporator has a frosting tendency; and when the bottom temperature meets the preset condition and it is determined that there is a frosting tendency, the air volume on the leeward side of the evaporator is further detected, so that when the change in the air volume on the leeward side also corresponds to a frosting tendency, the anti-freeze program is entered. The frosting state of the evaporator can be determined in a timely manner, thereby determining the timing of executing the anti-freeze strategy. The present application also discloses a control device for an air conditioner and an air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, for example, to a control method and device for an air conditioner, and an air conditioner. Background Art

[0002] Window air conditioners are small, window-mounted air conditioners, typically integrated units. They offer advantages such as simple structure, low production costs, easy installation, and reliable operation. However, in actual use, the evaporator of a window air conditioner can easily freeze and frost in low-temperature, high-humidity environments, affecting its normal operation.

[0003] In the related art, a defrost structure applied to window air conditioners is provided. By setting the distance between the sensor and the evaporator fins, when the thickness of the frost on the evaporator surface touches the sensor, the whole machine enters the anti-freeze stage and starts the defrost program.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] When the thickness of frost on the evaporator surface touches the temperature sensor, the evaporator is completely frozen. At this time, it enters the anti-freeze stage, and the defrosting time is long, affecting the cooling effect of the entire machine. Summary of the Invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a control method and device for an air conditioner, and an air conditioner, which can improve the accuracy of determining the timing of entering an anti-freeze stage.

[0008] In some embodiments, a control method for an air conditioner includes: obtaining the current bottom temperature of the air conditioner evaporator; when the current bottom temperature of the evaporator reaches a preset condition, obtaining the current wind speed value on the leeward side of the evaporator; and determining an anti-freeze strategy based on the current wind speed detection value.

[0009] Optionally, the preset condition includes: the current bottom temperature of the evaporator is less than or equal to a frosting set temperature.

[0010] Optionally, determining an anti-freezing strategy according to the current wind speed detection value includes:

[0011] When the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold, an anti-freeze program is executed to increase the temperature of the evaporator.

[0012] Optionally, determining the current ratio threshold includes:

[0013] Get the current temperature difference between the current ambient temperature and the target temperature;

[0014] The current ratio threshold is determined according to the current temperature difference.

[0015] Optionally, determining the current ratio threshold according to the current temperature difference includes:

[0016] Determining a current ratio threshold value corresponding to the current temperature difference value according to a correspondence between the temperature difference value and the ratio threshold value;

[0017] The temperature difference is negatively correlated with the ratio threshold.

[0018] Optionally, the air conditioning control method further includes:

[0019] When the anti-freezing strategy is to execute the anti-freezing program, controlling the compressor to stop;

[0020] When the current bottom temperature of the evaporator is greater than or equal to the defrost set temperature, the compressor is started.

[0021] Optionally, when the current bottom temperature of the evaporator is greater than or equal to the defrost setting temperature, the method further includes: controlling the fan of the evaporator to run for a set time.

[0022] In some embodiments, a control device for an air conditioner includes: a temperature detection module, configured to obtain the current bottom temperature of the air conditioner evaporator; a wind speed detection module, configured to obtain the current wind speed value on the leeward side of the evaporator when the current bottom temperature of the evaporator reaches a preset condition; and an execution module, configured to execute a corresponding anti-freeze strategy based on the current wind speed detection value.

[0023] In some embodiments, a control device for an air conditioner includes: a processor and a memory storing program instructions, and the processor is configured to execute the control method for an air conditioner as described in any one of the above embodiments when running the program instructions.

[0024] Optionally, the air conditioner includes the control device for the air conditioner as described in the above embodiment.

[0025] The control method and device for an air conditioner, and the air conditioner provided in the embodiments of the present disclosure can achieve the following technical effects:

[0026] When the bottom temperature of the evaporator reaches a preset condition, the current wind speed value on the leeward side of the evaporator is obtained to determine the corresponding anti-freeze strategy. Since evaporator frost usually freezes gradually from the bottom to the top, obtaining the bottom temperature can more promptly determine whether the evaporator has a frosting trend. If the bottom temperature meets the preset condition and it is determined that there is a frosting trend, the air volume on the leeward side of the evaporator is further detected. When the change in air volume on the leeward side also corresponds to a frosting trend, the anti-freeze program is entered. In this way, on the one hand, the frosting state of the evaporator can be determined in a timely manner, thereby determining the timing of executing the anti-freeze strategy; on the other hand, it can prevent the entire machine from frequently entering the anti-freeze stage, which affects the user's comfort.

[0027] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0029] Figure 1 This is a schematic diagram of a usage scenario of the air conditioner provided by an embodiment of the present disclosure;

[0030] Figure 2 Schematic diagram of the connection relationship of the processors of the air conditioner provided by the embodiment of the present disclosure;

[0031] Figure 3 is a schematic diagram of a control method for an air conditioner provided by an embodiment of the present disclosure;

[0032] Figure 4 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0033] Figure 5 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0034] Figure 6 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0035] Figure 7 1 is a schematic structural diagram of a control device for an air conditioner provided by an embodiment of the present disclosure;

[0036] Figure 8 2 is a schematic structural diagram of another control device for an air conditioner provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0038] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0039] Unless otherwise stated, the term "plurality" means two or more.

[0040] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0041] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0042] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0043] In the embodiments of the present disclosure, smart home appliances refer to home appliance products that are formed by introducing microprocessors, sensor technology, and network communication technology into home appliances. They have the characteristics of intelligent control, intelligent perception, and intelligent application. The operation process of smart home appliances often relies on the application and processing of modern technologies such as the Internet of Things, the Internet, and electronic chips. For example, smart home appliances can realize remote control and management of smart home appliances by users by connecting to electronic devices.

[0044] In the embodiments of the present disclosure, a terminal device refers to an electronic device with a wireless connection function. The terminal device can communicate with the above-mentioned smart home appliances by connecting to the Internet, or can communicate with the above-mentioned smart home appliances directly through Bluetooth, WiFi, etc. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built into a hover car, or any combination thereof. Mobile devices may include, for example, mobile phones, smart home devices, wearable devices, smart mobile devices, virtual reality devices, etc., or any combination thereof, wherein wearable devices include, for example, smart watches, smart bracelets, pedometers, etc.

[0045] Figure 1 It is a schematic diagram of a usage scenario of the air conditioner provided in an embodiment of the present disclosure.

[0046] Combine Figure 1 As shown, the usage scenario includes an air conditioner 100 and a cloud server 110 for communicating with the air conditioner. The air conditioner 100 can be a common air conditioner in a home scenario such as a window unit, a wall unit, a cabinet unit, or a duct unit.

[0047] The air conditioner 100 can be connected to the home WiFi network and communicate with control terminals such as mobile phones and cloud servers. Users can also control the air conditioner 100 to execute command programs such as air conditioning programs and anti-freeze programs through smartphone applications.

[0048] The air conditioner 100 communicates with the cloud server 110 via a WiFi network. The cloud server 110 is used to receive real-time status data of the air conditioner 100 for subscription to the big data platform and application service. At the same time, it also sends air conditioning instructions from other business servers, big data platforms, application terminals, and smart terminals to the air conditioner 100.

[0049] In other implementation scenarios of the present solution, terminal devices may also be included for communicating with the air conditioner 100 and / or the cloud server 110. Here, the terminal devices refer to smart devices in smart home application scenarios, such as smart phones, wearable devices, smart mobile devices, virtual display devices, etc., and may also be smart home appliances, such as smart refrigerators, smart TVs, smart washing machines, smart air conditioners, smart speakers, smart lights, and smart curtains, etc., or any combination thereof.

[0050] Figure 2 Schematic diagram of the connection relationship of the processor of the air conditioner provided by the embodiment of the present disclosure.

[0051] Combine Figure 2 The processor 200 of the air conditioner is used to receive and send information and instructions.

[0052] To detect frost on the heat exchanger, the processor 200 of the present embodiment is further connected to a temperature detection module 201 and a wind speed detection module 202. The temperature detection module 201 is located at the bottom of the evaporator and is used to obtain the bottom temperature of the evaporator. The wind speed detection module 202 is located on the leeward side of the evaporator and is used to obtain the wind speed on the leeward side of the evaporator.

[0053] Since frost on the evaporator typically freezes gradually from the bottom up, the temperature detection module 201 located at the bottom of the evaporator can be used to monitor the bottom temperature of the evaporator to promptly determine if the evaporator is experiencing frost. Furthermore, frosting on the evaporator can affect ventilation, reducing wind speed due to the obstruction of the frosted area. Therefore, by monitoring the wind speed on the leeward side of the evaporator using the wind speed detection module, the evaporator's frost status can be determined.

[0054] The processor 200 is used to output a control signal according to the detection values ​​of the temperature detection module 201 and the wind speed detection module 202 to control the operation of the air conditioner.

[0055] Figure 3 This is a control method for air conditioning provided by the embodiment of the present disclosure, which is applied to Figures 1 to 2 The control method can be executed by the air conditioner's processor, or on a server, such as a cloud server communicating with the air conditioner; or on a terminal device, such as a smartphone or a control terminal for a smart home appliance. In the disclosed embodiments, the air conditioner's processor is used as the execution subject to illustrate the solution.

[0056] like Figure 3 As shown, the control method for air conditioning includes:

[0057] In step S301 , the processor obtains the current bottom temperature of the air conditioner evaporator.

[0058] The bottom temperature of the evaporator is obtained by a temperature sensor arranged at the bottom of the evaporator, thereby determining the frosting trend of the evaporator at the current moment.

[0059] In step S302 , when the current bottom temperature of the evaporator reaches a preset condition, the processor obtains the current wind speed value on the leeward side of the evaporator.

[0060] The preset condition is used to indicate the bottom temperature range of the evaporator when the evaporator has a tendency to frost.

[0061] Optionally, the preset conditions include: the current bottom temperature of the evaporator is less than or equal to the frost setting temperature T S1 .

[0062] The frost set temperature indicates the surface temperature of the evaporator at which frost may form. Optionally, the frost set temperature is a value between [0, 2]. It can be 0°C, 1°C, or 2°C. In this embodiment, the frost set temperature is set to 0°C.

[0063] In other embodiments, the preset condition may include that the current bottom temperature of the evaporator is less than or equal to the frost setting temperature T S2 , and the cooling rate of the bottom temperature of the evaporator in two adjacent tests is greater than the preset cooling rate.

[0064] Here, the preset cooling rate is used to represent the cooling trend of the bottom temperature of the evaporator when it has a tendency to frost. In this way, when the bottom temperature of the evaporator decreases and has a trend of further decrease, it is determined that the evaporator has a tendency to frost. Here, T S2 >T S1 .

[0065] When the current bottom temperature of the evaporator reaches a preset condition, it indicates that the evaporator state determined by temperature detection has a tendency to frost. At this time, the wind speed value on the leeward side of the evaporator is obtained to further determine whether the evaporator is frosted.

[0066] Step S303: The processor executes a corresponding anti-freezing strategy according to the current wind speed detection value.

[0067] The wind speed value on the leeward side of the evaporator is obtained by a wind speed sensor set on the leeward side of the evaporator. In this way, the frosting trend of the evaporator at the current moment can be determined based on the influence of the frosting area on the wind speed.

[0068] The anti-freezing strategy includes executing the anti-freezing program and continuing to obtain the wind speed detection value.

[0069] In this way, the control method for air conditioning provided by the embodiment of the present disclosure is used to obtain the current wind speed value on the leeward side of the evaporator when the bottom temperature of the evaporator reaches a preset condition, and determine the corresponding anti-freeze strategy. Since frost on the evaporator mostly freezes gradually from the bottom to the top, obtaining the bottom temperature can more timely determine whether the evaporator has a frosting trend; and when the bottom temperature meets the preset conditions and it is determined that there is a frosting trend, the air volume on the leeward side of the evaporator is further detected, and when the change in the air volume on the leeward side also corresponds to a frosting trend, the anti-freeze program is entered. In this way, on the one hand, the frosting state of the evaporator can be determined in a timely manner, thereby determining the timing of executing the anti-freeze strategy; on the other hand, it can avoid the entire machine frequently entering the anti-freeze stage, which affects the user's comfort.

[0070] Optionally, determining an anti-freezing strategy based on the current wind speed detection value includes:

[0071] When the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold, the anti-freeze program is entered to increase the temperature of the evaporator.

[0072] The wind speed threshold is the standard wind speed value on the leeward side of the evaporator corresponding to the current operating status of the air conditioner.

[0073] That is, when the current wind speed detection value meets the following conditions, the anti-freeze program is entered to increase the temperature of the evaporator:

[0074]

[0075] Among them, v1 is the current wind speed detection value, v s is the wind speed threshold, and k is the current ratio threshold.

[0076] In practical applications, the evaporator freezing area affects the cooling effect. Therefore, when determining whether the evaporator has a freezing tendency and determining the anti-freeze strategy, it is necessary to consider the current operating status to reduce the impact on user use.

[0077] Figure 4 A control method for an air conditioner is shown, which is used to illustrate a solution for determining an anti-freezing strategy in combination with the current operating state of the air conditioner.

[0078] like Figure 4 As shown, the control method for air conditioning includes:

[0079] In step S401 , the processor obtains the current bottom temperature of the air conditioner evaporator.

[0080] Step S402: When the current bottom temperature of the evaporator reaches a preset condition, the processor obtains the current wind speed value on the leeward side of the evaporator.

[0081] In step S403 , the processor obtains a current temperature difference between the current ambient temperature and the target temperature.

[0082] The current ambient temperature refers to the temperature of the indoor space being regulated by the air conditioner. This is typically obtained using a temperature sensor installed on the indoor side of the air conditioner. Alternatively, it can be obtained using a temperature sensor installed inside the indoor space. Alternatively, it can be obtained using other smart home appliances with temperature sensing capabilities within the indoor space. The detected current ambient temperature is then transmitted through communication with the air conditioner or a cloud server.

[0083] The target temperature is the set value at which the air conditioner operates to bring the ambient temperature closer to that value. This can be set by the user via a remote control, mobile device, or control panel. Alternatively, the air conditioner can receive operating instructions from a cloud server and set the temperature to the appropriate level for air conditioning operation.

[0084] In step S404, the processor determines a current ratio threshold value according to the current temperature difference.

[0085] In step S405 , when the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold, the processor executes an anti-freeze program to increase the temperature of the evaporator.

[0086] The current temperature difference indicates the current operating status of the air conditioner. Different wind speed thresholds, and therefore different wind speed determination criteria, are determined based on different temperature differences. This allows the system to consider the current operating status when determining whether the evaporator is prone to freezing, minimizing the impact of evaporator freezing on the user experience. This allows for timely determination of the evaporator's frosting status, determining when to implement anti-freeze strategies. Furthermore, it prevents the system from frequently entering the anti-freeze phase, which could negatively impact user comfort.

[0087] Optionally, determining the current ratio threshold according to the current temperature difference includes:

[0088] According to the corresponding relationship between the temperature difference and the ratio threshold, a current ratio threshold corresponding to the current temperature difference is determined; the temperature difference and the ratio threshold are negatively correlated.

[0089] Here, the correspondence between the temperature difference and the ratio threshold can be in the form of a one-to-one data table. In this case, the correspondence between the temperature difference and the ratio threshold can be pre-stored in a database. After obtaining the current temperature difference, the database can be queried to obtain the current ratio threshold corresponding to the current temperature difference. In this embodiment, the larger the temperature difference, the smaller the ratio threshold. This is because when the current temperature difference is relatively large, the cooling effect generated by the air conditioner operation needs to be further improved. In this case, the frozen area of ​​the evaporator must be controlled within a relatively small range to avoid affecting the cooling effect, thereby quickly lowering the room temperature to the target temperature.

[0090] Specifically, the temperature interval in which the current temperature difference value is located is determined; and the corresponding ratio threshold is determined according to the temperature interval.

[0091] Table 1 shows a corresponding relationship between a temperature range of a temperature difference and a ratio threshold.

[0092] Table 1

[0093] <![CDATA[Temperature difference T0]]> Ratio threshold k <![CDATA[T0<T1]]> <![CDATA[k1]]> <![CDATA[T1≤T0≤T2]]> <![CDATA[k2]]> <![CDATA[T2<T0]]> <![CDATA[k3]]>

[0094] Here, T1 < T2, k1 > k2 > k3. Thus, after obtaining the current temperature difference, the corresponding proportional threshold can be determined based on the current temperature difference. The larger the proportional threshold value, the closer the corresponding wind speed value is to the wind speed threshold; this indicates that the impact of evaporator surface freezing on wind speed is smaller, and the corresponding surface frozen area is smaller.

[0095] After entering the anti-freeze program based on the bottom temperature of the evaporator and the wind speed on the leeward side, it is necessary to increase the temperature of the evaporator to get it out of the state of tending to freeze.

[0096] Figure 5 A control method for an air conditioner is shown, which is used to explain a solution after entering an anti-freeze program.

[0097] In step S501 , the processor obtains the current bottom temperature of the air conditioner evaporator.

[0098] Step S502: When the current bottom temperature of the evaporator reaches a preset condition, the processor obtains the current wind speed value on the leeward side of the evaporator.

[0099] Step S503 : When the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold, the processor executes an anti-freeze program to increase the temperature of the evaporator.

[0100] In step S504, the processor controls the compressor to stop.

[0101] Step S505: When the current bottom temperature of the evaporator is greater than or equal to the defrost setting temperature, the processor starts the compressor.

[0102] The defrost set temperature refers to the temperature at which frost on the evaporator surface melts. Optionally, the defrost set temperature is a value between [2, 4]. It can be 2°C, 3°C, or 4°C. In this embodiment, the defrost set temperature is set to 3°C.

[0103] Here, the compressor is shut down, cutting off the cooling input. The air conditioner gradually stops delivering cold air to the room. As the indoor air exchanges heat with the evaporator, the heat carried by the indoor air raises the evaporator's temperature. By shutting down and defrosting, the evaporator is freed from the freezing state.

[0104] Optionally, when the current bottom temperature of the evaporator is greater than or equal to the defrost setting temperature, the method further includes: controlling the fan of the evaporator to run for a set time.

[0105] Here, by running the evaporator fan, the "excess cold" on the evaporator is blown into the room, which can achieve the purpose of energy saving and dehumidification.

[0106] In this way, on the one hand, the evaporator frosting status can be determined in time by combining the evaporator temperature, leeward wind speed and ambient temperature, thereby determining the timing of implementing the anti-freeze strategy; on the other hand, it can avoid the entire machine frequently entering the anti-freeze stage, affecting the user's comfort.

[0107] Figure 6 A control method for air conditioning is shown, which is applied to Figure 1 Air conditioning shown.

[0108] like Figure 6 As shown, the control method for air conditioning includes:

[0109] Step S601: Acquire the current bottom temperature of the air conditioner evaporator.

[0110] Step S602: When the current bottom temperature of the evaporator is lower than the set frosting temperature, the current wind speed value on the leeward side of the evaporator is obtained.

[0111] Step S603: Determine the ratio of the current wind speed to the wind speed threshold.

[0112] Step S604: obtaining the current temperature difference between the current ambient temperature and the target temperature.

[0113] Step S605: When the current temperature difference is less than or equal to 5° C., determine the current ratio threshold value as 0.5.

[0114] Step S606: When the current temperature difference threshold is greater than 5° C., determine the current ratio threshold to be 0.3.

[0115] Step S607: When the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold, an anti-freezing program is executed.

[0116] Step S608: Control the compressor to stop.

[0117] Step S609: When the bottom temperature of the evaporator is greater than the defrost set temperature, the fan of the evaporator is controlled to run for 60 seconds.

[0118] Step S610: start the compressor and return to step S601.

[0119] When the bottom temperature of the evaporator reaches a preset condition, the current wind speed value on the leeward side of the evaporator is obtained to determine the corresponding anti-freeze strategy. Since evaporator frost usually freezes gradually from the bottom to the top, obtaining the bottom temperature can more promptly determine whether the evaporator has a frosting trend. If the bottom temperature meets the preset condition and it is determined that there is a frosting trend, the air volume on the leeward side of the evaporator is further detected. When the change in air volume on the leeward side also corresponds to a frosting trend, the anti-freeze program is entered. In this way, on the one hand, the frosting state of the evaporator can be determined in a timely manner, thereby determining the timing of executing the anti-freeze strategy; on the other hand, it can prevent the entire machine from frequently entering the anti-freeze stage, which affects the user's comfort.

[0120] Figure 7 Schematic diagram of a control device for an air conditioner provided in an embodiment of the present application. The control device for an air conditioner can be implemented in software, hardware, or a combination of both.

[0121] Combine Figure 7 As shown, the air conditioner control device includes a temperature detection module 71, a wind speed detection module 72, and an execution module 73. The temperature detection module 71 is configured to obtain the current bottom temperature of the air conditioner evaporator; the wind speed detection module 72 is configured to obtain the current wind speed value on the leeward side of the evaporator when the current bottom temperature of the evaporator reaches a preset condition; and the execution module 73 is configured to execute a corresponding anti-freeze strategy based on the current wind speed detection value.

[0122] Combine Figure 8 As shown, an embodiment of the present disclosure provides a control device for an air conditioner, including a processor (Processor) 800 and a memory (Memory) 801. Optionally, the device may also include a communication interface (Communication Interface) 802 and a bus 803. The processor 800, the communication interface 802, and the memory 801 can communicate with each other through the bus 803. The communication interface 802 can be used for information transmission. The processor 800 can call the logic instructions in the memory 801 to execute the control method for the air conditioner of the above embodiment.

[0123] In addition, the logic instructions in the memory 801 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0124] Memory 801, as a storage medium, can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the methods in the embodiments of the present disclosure. Processor 800 executes the program instructions / modules stored in memory 801 to execute functional applications and process data, thereby implementing the air conditioner control method in the above-described embodiments.

[0125] The memory 801 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal device. Furthermore, the memory 801 may include high-speed random access memory and non-volatile memory.

[0126] An embodiment of the present disclosure provides an air conditioner, comprising the above-mentioned control device for an air conditioner.

[0127] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned control method for an air conditioner.

[0128] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions, which, when executed by a computer, enable the computer to execute the above-mentioned control method for an air conditioner.

[0129] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0130] The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: 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, and other media that can store program code, or a transient storage medium.

[0131] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0132] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0133] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple 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 each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, and can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0134] The flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operations of the systems, methods and computer program products according to the embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical functions. 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, or they can sometimes be executed in the opposite order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in an order different from that disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A control method for an air conditioner, characterized in that: include: Get the current bottom temperature of the air conditioner evaporator; When the current bottom temperature of the evaporator reaches a preset condition, the current wind speed value on the leeward side of the evaporator is obtained; When the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold, executing an anti-freeze program to increase the temperature of the evaporator; Among them, the determination of the current ratio threshold includes: obtaining the current temperature difference between the current ambient temperature and the target temperature; determining the current ratio threshold corresponding to the current temperature difference based on the corresponding relationship between the temperature difference and the ratio threshold; the temperature difference is negatively correlated with the ratio threshold.

2. The control method according to claim 1, characterized in that: The preset conditions include: The current bottom temperature of the evaporator is less than or equal to the frosting set temperature.

3. The control method according to claim 1 or 2, characterized in that: Also includes: When the anti-freeze strategy is to execute the anti-freeze program, the compressor is controlled to stop; When the current bottom temperature of the evaporator is greater than or equal to the defrost set temperature, the compressor is started.

4. The control method according to claim 3, characterized in that: When the current bottom temperature of the evaporator is greater than or equal to the defrost set temperature, the following also applies: Controls the evaporator fan running time setting.

5. A control device for an air conditioner, characterized in that: include: a temperature detection module configured to obtain a current bottom temperature of the air conditioner evaporator; a wind speed detection module configured to obtain a current wind speed value on the leeward side of the evaporator when the current bottom temperature of the evaporator reaches a preset condition; an execution module configured to execute an anti-freeze program to increase the temperature of the evaporator when the ratio of the current wind speed value to the wind speed threshold is less than the current ratio threshold; Among them, the determination of the current ratio threshold includes: obtaining the current temperature difference between the current ambient temperature and the target temperature; determining the current ratio threshold corresponding to the current temperature difference based on the corresponding relationship between the temperature difference and the ratio threshold; the temperature difference is negatively correlated with the ratio threshold.

6. A control device for an air conditioner, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the control method for an air conditioner according to any one of claims 1 to 4 when running the program instructions.

7. An air conditioner, characterized in that: The invention comprises the control device for air conditioning according to claim 5 or 6.

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