Air conditioner anti-icing method and device, air conditioner and computer readable storage medium

Abstract

The invention relates to the technical field of intelligent household appliances, and discloses an air conditioner anti-icing method which comprises the steps that when an air conditioner outdoor unit is powered off, the outdoor environment temperature is detected; when the outdoor environment temperature is smaller than or equal to the first temperature threshold value, the water heating device is controlled to heat the outdoor heat exchanger, and the water temperature of the outdoor heat exchanger is detected; and when the water temperature of the outdoor heat exchanger is smaller than or equal to the first water temperature threshold value, the electric heating device is controlled to heat the outdoor heat exchanger. Under the condition of power failure of the air conditioner outdoor unit, the heating energy consumption of the air conditioner outdoor unit under the power failure can be matched with the icing risk of the outdoor heat exchanger through step-by-step control over the water heating device and the electric heating device, and the energy efficiency of anti-icing operation of the plate heat exchanger is improved; and energy consumption is reduced while water in the plate heat exchanger of the air conditioner outdoor unit is prevented from freezing due to the fact that water cannot be drained in time. The invention further discloses an anti-icing device for the air conditioner, the air conditioner and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, for example, to a method and device for preventing air conditioner icing, an air conditioner, and a computer-readable storage medium. Background Art

[0002] At present, when the air conditioner water machine is working, if there is a sudden power outage and the heating water of the air conditioner outdoor unit is not drained in time, in cold weather, some water will not be drained because the drain outlet of the air conditioner outdoor unit plate heat exchanger is not the lowest point. Or, because the weather is too cold, the air conditioner freezes during the drainage process, which can easily cause the plate heat exchanger in the air conditioner outdoor unit to be damaged due to freezing.

[0003] Related technology discloses a method for preventing plate heat exchangers from freezing, which involves detecting the ambient temperature of the space where the heating system is located and the water inlet temperature of the water pump in the heating system; based on the ambient temperature and the water inlet temperature of the water pump, determining whether the plate heat exchanger in the heating system is at risk of freezing; and when it is determined that the plate heat exchanger is at risk of freezing, starting the compressor in the heating system to heat the stored water in the plate heat exchanger by running the compressor.

[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 there's a risk of freezing in the plate heat exchanger, the technology uses a compressor to reduce the risk of water freezing. However, in practice, if the air conditioner's outdoor unit experiences a power outage or power outage, the compressor won't start properly. Using a backup power source to drive the compressor to prevent freezing in the plate heat exchanger is energy-inefficient.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0007] 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.

[0008] The embodiments of the present disclosure provide an air conditioner anti-icing method and device, an air conditioner, and a computer-readable storage medium, so as to improve the energy efficiency of the anti-icing operation of the plate heat exchanger when the ambient temperature of the air conditioner outdoor unit is low and the air conditioner outdoor unit suddenly loses power or has a power outage, thereby preventing water in the plate heat exchanger of the air conditioner outdoor unit from freezing due to inability to be removed in time and reducing energy consumption.

[0009] In some embodiments, the air conditioner includes a water heating device and an electric heating device; the method includes: when the air conditioner outdoor unit is out of power, detecting the outdoor ambient temperature; when the outdoor ambient temperature is less than or equal to a first temperature threshold, controlling the water heating device to heat the outdoor heat exchanger, and detecting the water temperature of the outdoor heat exchanger; when the water temperature of the outdoor heat exchanger is less than or equal to the first water temperature threshold, controlling the electric heating device to heat the outdoor heat exchanger.

[0010] Optionally, the water heating device includes a water heating module and a water circulation module; controlling the water heating module to heat the outdoor heat exchanger includes: controlling the start and stop of the water heating module and / or the water circulation module according to the outdoor ambient temperature.

[0011] Optionally, the water heating device also includes a water tank; according to the outdoor ambient temperature, the water heating module and / or the water circulation module are controlled to start and stop, including: when the outdoor ambient temperature is less than or equal to a first temperature threshold, starting the water heating module to heat the water in the water tank; when the outdoor ambient temperature is less than or equal to a second temperature threshold, starting the water circulation module.

[0012] Optionally, starting the water heating module to heat the water in the water tank includes: adjusting the water temperature in the water tank according to the outdoor ambient temperature.

[0013] Optionally, the water temperature in the water tank is adjusted according to the outdoor ambient temperature, including: determining a target water temperature corresponding to the current outdoor ambient temperature based on the correspondence between the outdoor ambient temperature and the water temperature in the water tank; and adjusting the water temperature in the water tank to the target water temperature; wherein the outdoor ambient temperature is negatively correlated with the target water temperature.

[0014] Optionally, starting the water circulation module includes: adjusting the water circulation flow rate of the water circulation module according to the outdoor ambient temperature.

[0015] Optionally, the water circulation flow rate of the water circulation module is adjusted according to the outdoor ambient temperature, including: determining the target flow rate corresponding to the current outdoor ambient temperature according to the corresponding relationship between the outdoor ambient temperature and the water circulation flow rate; adjusting the water circulation flow rate of the water circulation module to the target flow rate; wherein the outdoor ambient temperature is negatively correlated with the target flow rate.

[0016] Optionally, controlling the electric heating device to heat the outdoor heat exchanger includes: adjusting the power of the electric heating device according to the water temperature of the outdoor heat exchanger.

[0017] Optionally, the power of the electric heating device is adjusted according to the water temperature of the outdoor heat exchanger, including: determining the target power corresponding to the current water temperature of the outdoor heat exchanger according to the correspondence between the water temperature of the outdoor heat exchanger and the power of the electric heating device; and adjusting the power of the electric heating device to the target power; wherein the water temperature of the outdoor heat exchanger is negatively correlated with the target power.

[0018] Optionally, after adjusting the power of the electric heating device to the target power, it also includes: correcting the power of the electric heating device based on one or more parameters among the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module and the interval time between the water circulation module and the electric heating device being turned on.

[0019] Optionally, the power of the electric heating device is corrected according to the current temperature of the water in the water tank, including: determining a first correction parameter corresponding to the current temperature of the water in the water tank according to the correspondence between the current temperature of the water in the water tank and the power of the electric heating device; and correcting the power of the electric heating device according to the first correction parameter; wherein the current temperature of the water in the water tank is negatively correlated with the power of the electric heating device.

[0020] Optionally, the power of the electric heating device is corrected according to the water circulation flow rate of the water circulation module, including: determining a second correction parameter corresponding to the current water circulation flow rate of the water circulation module according to the correspondence between the water circulation flow rate of the water circulation module and the power of the electric heating device; and correcting the power of the electric heating device according to the second correction parameter; wherein, the current water circulation flow rate of the water circulation module is negatively correlated with the power of the electric heating device.

[0021] Optionally, the power of the electric heating device is corrected according to the interval duration between the water circulation module and the electric heating device being turned on, including: determining a third correction parameter corresponding to the interval duration between the water circulation module and the electric heating device being turned on according to the correspondence between the interval duration between the water circulation module and the electric heating device being turned on and the power of the electric heating device; and correcting the power of the electric heating device according to the third correction parameter; wherein, the interval duration between the water circulation module and the electric heating device being turned on is negatively correlated with the power of the electric heating device.

[0022] Optionally, the power of the electric heating device is corrected according to a combination of multiple parameters including the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on, including: determining four correction parameters of the power of the electric heating device according to a combination of multiple parameters including the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on; and correcting the power of the electric heating device according to the fourth correction parameter; wherein, the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on are all negatively correlated with the power of the electric heating device.

[0023] In some embodiments, the device includes: a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned air conditioner anti-icing method when executing the above-mentioned program instructions.

[0024] In some embodiments, the air conditioner includes: an air conditioner body, including a water heating device and an electric heating device; and the above-mentioned air conditioner anti-icing device is installed on the air conditioner body.

[0025] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are run, the above-mentioned air conditioner anti-icing method is executed.

[0026] The air conditioner anti-icing method and device, air conditioner, and computer-readable storage medium provided in the embodiments of the present disclosure can achieve the following technical effects:

[0027] When the air conditioner's outdoor unit experiences a power outage, the system detects the outdoor ambient temperature. If the outdoor ambient temperature is less than or equal to a first temperature threshold, the system controls the water heating device to heat the outdoor heat exchanger. Furthermore, the system detects the water temperature in the outdoor heat exchanger. If the water temperature in the outdoor heat exchanger is less than or equal to the first water temperature threshold, the system controls the electric heating device to heat the outdoor heat exchanger. In the event of a power outage, the system's heating energy consumption during a power outage is matched to the risk of freezing of the outdoor heat exchanger through step-by-step control of the water heating device and the electric heating device. This improves the energy efficiency of the plate heat exchanger's anti-icing operation, prevents freezing of water in the plate heat exchanger due to inability to drain promptly, and reduces energy consumption.

[0028] 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

[0029] 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,

[0030] Figure 1 is a schematic diagram of an air conditioner anti-icing method provided by an embodiment of the present disclosure;

[0031] Figure 2 is a schematic diagram of another air conditioner anti-icing method provided by an embodiment of the present disclosure;

[0032] Figure 3 is a schematic diagram of another air conditioner anti-icing method provided by an embodiment of the present disclosure;

[0033] Figure 4 is a schematic diagram of another air conditioner anti-icing method provided by an embodiment of the present disclosure;

[0034] Figure 5 is a schematic diagram of an air conditioner anti-icing device provided by an embodiment of the present disclosure;

[0035] Figure 6It is a schematic diagram of an air conditioner provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] Unless otherwise stated, the term "plurality" means two or more.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In the disclosed embodiments, 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.

[0044] The present disclosure discloses an air conditioner comprising a control device, a solar power supply device, an environmental monitoring device, a water heating device, and an electric heating device. The solar power supply device comprises a solar photovoltaic panel and a battery. The solar power supply device is configured to convert solar energy into electrical energy via the solar photovoltaic panel and store it in the battery, thereby providing power to one or more of the aforementioned devices during a power outage. The environmental monitoring device is configured to monitor various environmental parameters, including the ambient temperature of the air conditioner's outdoor unit, the water temperature of the outdoor heat exchanger, and / or the water temperature of the water storage tank. The water heating device comprises a water heating module, a water circulation module, and a water storage tank. The water storage tank is configured to store water. The water heating module is configured to heat the water in the water storage tank. The water circulation module is configured to circulate the water in the water storage tank to the surface of the outdoor heat exchanger, thereby raising the water temperature of the outdoor heat exchanger through heat exchange. The electric heating device comprises an electric heating tape attached to the outer surface of the outdoor heat exchanger and configured to raise the temperature of the water inside the outdoor heat exchanger. The control device comprises a processor electrically connected to the aforementioned electrical components and configured to control their operation. The outdoor heat exchanger may be a plate heat exchanger, a shell and tube heat exchanger, a double-tube heat exchanger or other outdoor heat exchangers that use water as a refrigerant.

[0045] Figures 1 to 4 This is a schematic diagram of an air conditioner anti-icing method provided by an embodiment of the present disclosure. Any of the following methods can be executed in the air conditioner or in a server or terminal device connected to the air conditioner. In the embodiments of the present disclosure, the air conditioner is used as the execution subject to illustrate the solution.

[0046] Based on the above air conditioning structure, such as Figure 1 As shown, an embodiment of the present disclosure provides a method for preventing icing of an air conditioner, comprising:

[0047] S01, when the outdoor unit of the air conditioner is powered off, the air conditioner detects the outdoor ambient temperature.

[0048] S02: When the outdoor ambient temperature is less than or equal to a first temperature threshold, the air conditioner controls the water heating device to heat the outdoor heat exchanger and detects the water temperature of the outdoor heat exchanger.

[0049] S03: When the water temperature of the outdoor heat exchanger is less than or equal to a first water temperature threshold, the air conditioner controls the electric heating device to heat the outdoor heat exchanger.

[0050] When the water temperature of the outdoor heat exchanger exceeds the fifth water temperature threshold, the electric heating device is turned off. When the ambient temperature exceeds the seventh temperature threshold, the water heating device is turned off. The seventh temperature threshold is set to 12°C, and the fifth water temperature threshold is set to 15°C.

[0051] Using the air conditioner anti-icing method provided in an embodiment of the present disclosure, when the air conditioner outdoor unit loses power, the outdoor ambient temperature is detected. When the outdoor ambient temperature is less than or equal to a first temperature threshold, the water heating device is controlled to heat the outdoor heat exchanger. The water temperature of the outdoor heat exchanger is also detected. When the water temperature of the outdoor heat exchanger is less than or equal to the first water temperature threshold, the electric heating device is controlled to heat the outdoor heat exchanger. In the event of a power outage of the air conditioner outdoor unit, the heating energy consumption of the air conditioner outdoor unit during the power outage can be matched to the risk of icing of the outdoor heat exchanger through step-by-step control of the water heating device and the electric heating device. This improves the energy efficiency of the plate heat exchanger's anti-icing operation, prevents water in the plate heat exchanger of the air conditioner outdoor unit from freezing due to inability to drain in a timely manner, and reduces energy consumption.

[0052] Based on the above air conditioning structure, such as Figure 2 As shown, the embodiment of the present disclosure provides another method for preventing icing of an air conditioner, comprising:

[0053] S21, when the air conditioner outdoor unit is powered off, the air conditioner detects the outdoor ambient temperature.

[0054] S21, when the outdoor ambient temperature is less than or equal to a first temperature threshold, the air conditioner controls the start and stop of the water heating module and / or the water circulation module according to the outdoor ambient temperature, and detects the water temperature of the outdoor heat exchanger.

[0055] S23: When the water temperature of the outdoor heat exchanger is less than or equal to a first water temperature threshold, the air conditioner controls the electric heating device to heat the outdoor heat exchanger.

[0056] By adopting the air conditioner anti-icing method provided in the embodiment of the present invention, the air conditioner controls the start and stop of the water heating module according to the outdoor ambient temperature, or controls the start and stop of the water circulation module, or controls the start and stop of the water heating module and the water circulation module, so that the start and stop of the water heating device can match the outdoor ambient temperature, thereby improving the heating energy efficiency of the water heating device on the outdoor heat exchanger.

[0057] Based on the above air conditioning structure, such as Figure 3 As shown, the embodiment of the present disclosure provides another method for preventing icing of an air conditioner, comprising:

[0058] S31, when the outdoor unit of the air conditioner is powered off, the air conditioner detects the outdoor ambient temperature.

[0059] S32: When the outdoor ambient temperature is less than or equal to a first temperature threshold, the air conditioner starts a water heating module to heat the water in the water tank.

[0060] S33: When the outdoor ambient temperature is less than or equal to the second temperature threshold, the air conditioner starts the water circulation module and detects the water temperature of the outdoor heat exchanger.

[0061] S34: When the water temperature of the outdoor heat exchanger is less than or equal to a first water temperature threshold, the air conditioner controls the electric heating device to heat the outdoor heat exchanger.

[0062] Using the air conditioner anti-icing method provided in the embodiments of the present disclosure, when the outdoor ambient temperature is less than or equal to a first temperature threshold, the ambient temperature of the air conditioner outdoor unit is relatively low, but the risk of icing is low. Therefore, the air conditioner activates the water heating module to heat the water in the water storage tank, so that the water heating device can promptly heat the outdoor heat exchanger when the risk of icing on the outdoor heat exchanger is high, thereby improving the operating efficiency of the water heating device. When the outdoor ambient temperature is less than or equal to a second temperature threshold, the ambient temperature of the air conditioner outdoor unit is relatively high, and the risk of icing on the outdoor heat exchanger is high. Therefore, the air conditioner activates the water circulation module to perform heat exchange on the surface of the outdoor heat exchanger to prevent icing on the outdoor heat exchanger.

[0063] Optionally, the air conditioner starts a water heating module to heat the water in the water tank, including: the air conditioner adjusts the water temperature in the water tank according to the outdoor ambient temperature.

[0064] In this way, the air conditioner adjusts the water temperature in the water tank according to the outdoor ambient temperature, so that the water temperature in the water tank matches the outdoor ambient temperature, thereby improving the heating efficiency of the water circulation module.

[0065] Optionally, the air conditioner adjusts the water temperature in the water tank according to the outdoor ambient temperature, including: the air conditioner determines a target water temperature corresponding to the current outdoor ambient temperature based on the correspondence between the outdoor ambient temperature and the water temperature in the water tank; the air conditioner adjusts the water temperature in the water tank to the target water temperature; wherein the outdoor ambient temperature is negatively correlated with the target water temperature.

[0066] In actual application, the target water temperature can be set to 45°C or 50°C, and the first temperature threshold can be set to 9°C or 10°C. For every 1°C or 2°C decrease in the outdoor ambient temperature, the target water temperature increases by 4°C or 5°C.

[0067] In this way, the air conditioner determines the target water temperature corresponding to the current outdoor ambient temperature based on the corresponding relationship between the outdoor ambient temperature and the water temperature in the water storage tank. This ensures that the target water temperature matches the outdoor ambient temperature. The higher the outdoor ambient temperature, the less heat the outdoor heat exchanger needs to draw from the water in the water storage tank to prevent icing. Therefore, the lower the target water temperature, the more heat the outdoor heat exchanger needs to draw from the water in the water storage tank to prevent icing, resulting in a higher target water temperature. Therefore, by adjusting the water temperature in the water storage tank to the target temperature, the air conditioner can ensure that the temperature of the water circulating in the water circulation module reaches the target temperature, thereby further improving the water circulation module's heating efficiency for the outdoor heat exchanger.

[0068] Optionally, the air conditioner starts the water circulation module, including: the air conditioner adjusts the water circulation flow rate of the water circulation module according to the outdoor ambient temperature.

[0069] In this way, the air conditioner adjusts the water circulation flow rate of the water circulation module according to the outdoor ambient temperature, so that the water circulation flow rate of the water circulation module can match the outdoor ambient temperature, and the circulating water of the water circulation module can better exchange heat with the outdoor heat exchanger, thereby better improving the heating energy efficiency of the water circulation module for the outdoor heat exchanger.

[0070] Optionally, the air conditioner adjusts the water circulation flow rate of the water circulation module according to the outdoor ambient temperature, including: the air conditioner determines the target flow rate corresponding to the current outdoor ambient temperature according to the correspondence between the outdoor ambient temperature and the water circulation flow rate; the air conditioner adjusts the water circulation flow rate of the water circulation module to the target flow rate; wherein, the outdoor ambient temperature is negatively correlated with the target flow rate.

[0071] In actual application, when the second temperature threshold ≥ the outdoor ambient temperature ≥ the third temperature threshold, the target flow rate is 0.5 m / s; when the third temperature threshold ≥ the outdoor ambient temperature ≥ the fourth temperature threshold, the target flow rate is 0.8 m / s; when the fourth temperature threshold ≥ the outdoor ambient temperature ≥ the fifth temperature threshold, the target flow rate is 1.2 m / s; when the fifth temperature threshold ≥ the outdoor ambient temperature ≥ the sixth temperature threshold, the target flow rate is 1.5 m / s. The second temperature threshold is set to 8°C, the third temperature threshold is set to 6°C, the fourth temperature threshold is set to 4°C, the fifth temperature threshold is set to 3°C, and the sixth temperature threshold is set to 2°C.

[0072] In this way, the air conditioner determines the target flow rate corresponding to the current outdoor ambient temperature based on the corresponding relationship between the outdoor ambient temperature and the water circulation flow rate. This allows the target flow rate to match the outdoor ambient temperature. The higher the outdoor ambient temperature, the less heat the outdoor heat exchanger needs to obtain from the water circulation module to prevent icing, resulting in a slower target flow rate. The lower the outdoor ambient temperature, the more heat the outdoor heat exchanger needs to obtain from the water circulation module to prevent icing, resulting in a faster target flow rate. By adjusting the water circulation flow rate in the water circulation module to the target flow rate, the air conditioner can better improve the heat exchange efficiency between the water in the water circulation module and the outdoor heat exchanger, thereby enhancing the energy efficiency of the water circulation module.

[0073] Based on the above air conditioning structure, such as Figure 4 As shown, the embodiment of the present disclosure provides another method for preventing icing of an air conditioner, comprising:

[0074] S41, when the outdoor unit of the air conditioner is powered off, the air conditioner detects the outdoor ambient temperature.

[0075] S42: When the outdoor ambient temperature is less than or equal to a first temperature threshold, the air conditioner controls the water heating device to heat the outdoor heat exchanger and detects the water temperature of the outdoor heat exchanger.

[0076] S43: When the water temperature of the outdoor heat exchanger is less than or equal to a first water temperature threshold, the air conditioner adjusts the power of the electric heating device according to the water temperature of the outdoor heat exchanger.

[0077] With the air conditioner anti-icing method provided in the embodiments of the present disclosure, when the water temperature of the outdoor heat exchanger is less than or equal to a first water temperature threshold, the risk of icing is high, and a large amount of heat is required to prevent icing. Therefore, the air conditioner adjusts the power of the electric heating device based on the water temperature of the outdoor heat exchanger to match the power of the electric heating device with the water temperature of the outdoor heat exchanger, thereby balancing the prevention of heat exchanger icing and the energy efficiency of the electric heating device.

[0078] Optionally, the air conditioner adjusts the power of the electric heating device according to the water temperature of the outdoor heat exchanger, including: the air conditioner determines the target power corresponding to the current water temperature of the outdoor heat exchanger according to the correspondence between the water temperature of the outdoor heat exchanger and the power of the electric heating device; the air conditioner adjusts the power of the electric heating device to the target power; wherein, the water temperature of the outdoor heat exchanger is negatively correlated with the target power.

[0079] When the first water temperature threshold ≥ the outdoor heat exchanger water temperature ≥ the second water temperature threshold, the target power is 2.0 kW; when the second water temperature threshold ≥ the outdoor heat exchanger water temperature ≥ the third water temperature threshold, the target power is 5.0 kW; when the third water temperature threshold ≥ the outdoor heat exchanger water temperature ≥ the fourth water temperature threshold, the target power is 8.0 kW; and when the third water temperature threshold ≥ the outdoor heat exchanger water temperature ≥ the fourth water temperature threshold, the target power is 15 kW. The first water temperature threshold is set to 10°C; the second water temperature threshold is set to 7°C; the third water temperature threshold is set to 5°C; and the fourth water temperature threshold is set to 3°C.

[0080] In this way, the air conditioner determines the target power corresponding to the current outdoor heat exchanger water temperature based on the corresponding relationship between the outdoor heat exchanger water temperature and the power of the electric heating device. This allows the target power to match the outdoor heat exchanger water temperature. The higher the outdoor heat exchanger water temperature, the less heat the outdoor heat exchanger needs to obtain from the electric heating device to prevent icing, so the lower the target power. The lower the outdoor heat exchanger water temperature, the more heat the outdoor heat exchanger needs to obtain from the electric heating device to prevent icing, so the higher the target power. By adjusting the power of the electric heating device to the target power, the air conditioner can ensure that the heat generated by the electric heating device meets the outdoor heat exchanger's anti-icing requirements, thereby further improving the electric heating device's heating efficiency for the outdoor heat exchanger.

[0081] Optionally, after the air conditioner adjusts the power of the electric heating device to the target power, it also includes: the air conditioner corrects the power of the electric heating device based on one or more parameters among the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module and the interval time between the water circulation module and the electric heating device.

[0082] In this way, since the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module and the interval time between the water circulation module and the electric heating device are all affected by the heating efficiency of the electric heating device on the outdoor heat exchanger, the air conditioner corrects the power of the electric heating device according to one or more parameters among the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module and the interval time between the water circulation module and the electric heating device, which can make the power of the electric heating device more accurate, thereby further improving the energy efficiency of the electric heating device.

[0083] Optionally, the air conditioner corrects the power of the electric heating device according to the current temperature of the water in the water tank, including: the air conditioner determines a first correction parameter corresponding to the current temperature of the water in the water tank according to the correspondence between the current temperature of the water in the water tank and the power of the electric heating device; the air conditioner corrects the power of the electric heating device according to the first correction parameter; wherein, the current temperature of the water in the water tank is negatively correlated with the power of the electric heating device.

[0084] Thus, when the electric heating device's activation conditions are met, the water in the water tank may not necessarily reach the target water temperature accurately. Adjusting the electric heating device's power based on the target water temperature may not be accurate enough. Furthermore, as the water circulation module exchanges heat with the outdoor heat exchanger, changes in the water tank's temperature can also affect the electric heating device's heating efficiency. Therefore, the air conditioner determines a first correction parameter corresponding to the current water tank temperature based on the corresponding relationship between the current water tank temperature and the power of the electric heating device, so that the first correction parameter matches the current water tank temperature. The higher the current water tank temperature, the less heat the outdoor heat exchanger needs to obtain from the electric heating device for anti-icing. The lower the current water tank temperature, the more heat the outdoor heat exchanger needs to obtain from the electric heating device for anti-icing. Therefore, by correcting the power of the electric heating device based on the first correction parameter, the air conditioner can better improve the accuracy of the power of the electric heating device, thereby further improving the energy efficiency of the electric heating device.

[0085] Optionally, the air conditioner corrects the power of the electric heating device according to the water circulation flow rate of the water circulation module, including: the air conditioner determines a second correction parameter corresponding to the current water circulation flow rate of the water circulation module according to the correspondence between the water circulation flow rate of the water circulation module and the power of the electric heating device; the air conditioner corrects the power of the electric heating device according to the second correction parameter; wherein, the current water circulation flow rate of the water circulation module is negatively correlated with the power of the electric heating device.

[0086] Thus, when the electric heating device startup conditions are met, the water circulation flow rate of the water circulation module may not necessarily reach the target flow rate accurately. Adjusting the power of the electric heating device based on the target flow rate may not be accurate enough. Moreover, as the water circulation module exchanges heat with the outdoor heat exchanger, changes in the water circulation flow rate of the water circulation module will also affect the heating energy efficiency of the electric heating device. Therefore, the air conditioner determines a second correction parameter corresponding to the current water circulation flow rate of the water circulation module based on the corresponding relationship between the water circulation flow rate of the water circulation module and the power of the electric heating device, so that the second correction parameter matches the current water circulation flow rate of the water circulation module. The faster the current water circulation flow rate of the water circulation module, the less heat the outdoor heat exchanger needs to obtain from the electric heating device for anti-icing. The slower the current water circulation flow rate of the water circulation module, the more heat the outdoor heat exchanger needs to obtain from the electric heating device for anti-icing. Therefore, by correcting the power of the electric heating device based on the second correction parameter, the air conditioner can better improve the accuracy of the power of the electric heating device, thereby further improving the energy efficiency of the electric heating device.

[0087] Optionally, the air conditioner corrects the power of the electric heating device according to the interval length between the water circulation module and the electric heating device being turned on, including: the air conditioner determines a third correction parameter corresponding to the interval length between the water circulation module and the electric heating device being turned on according to the correspondence between the interval length between the water circulation module and the electric heating device being turned on and the power of the electric heating device; the air conditioner corrects the power of the electric heating device according to the third correction parameter; wherein, the interval length between the water circulation module and the electric heating device being turned on is negatively correlated with the power of the electric heating device.

[0088] Because the time at which the electric heater activation conditions are met is variable, the interval between the water circulation module and the electric heater is also variable. When the electric heater is activated, the heating effect of the water circulation module on the outdoor heat exchanger also varies with the interval. This means the interval between the water circulation module and the electric heater also affects the heating efficiency of the electric heater. Therefore, the air conditioner determines a third correction parameter corresponding to the interval between the water circulation module and the electric heater based on the corresponding relationship between the interval between the water circulation module and the electric heater and the power of the electric heater, so that the third correction parameter matches the interval between the water circulation module and the electric heater. The longer the interval, the less heat the outdoor heat exchanger needs to obtain from the electric heater for anti-icing, while the shorter the interval, the more heat the outdoor heat exchanger needs to obtain from the electric heater for anti-icing. Therefore, by correcting the power of the electric heater based on the third correction parameter, the air conditioner can better improve the accuracy of the power of the electric heater, thereby further improving the energy efficiency of the electric heater.

[0089] Optionally, the air conditioner corrects the power of the electric heating device based on a combination of multiple parameters including the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on, including: the air conditioner determines four correction parameters for the power of the electric heating device based on a combination of multiple parameters including the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on; the air conditioner corrects the power of the electric heating device based on the fourth correction parameter; wherein, the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on are all negatively correlated with the power of the electric heating device.

[0090] In this way, the air conditioner determines four correction parameters for the power of the electric heating device based on a combination of multiple parameters including the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on. For example, the air conditioner determines the four correction parameters for the power of the electric heating device based on the current temperature of the water in the water tank and the water circulation flow rate of the water circulation module; or the air conditioner determines the four correction parameters for the power of the electric heating device based on the water circulation flow rate of the water circulation module and the interval time between the water circulation module and the electric heating device being turned on; or the air conditioner determines the four correction parameters for the power of the electric heating device based on the current temperature of the water in the water tank, the water circulation flow rate of the water circulation module, and the interval time between the water circulation module and the electric heating device being turned on. Correcting the power of the electric heating device using the fourth correction parameter determined by the combination of the above multiple parameters can further improve the energy efficiency of the electric heating device.

[0091] Among them, it should be noted that the corresponding relationship between the above-mentioned parameters can be measured based on experiments, or can be determined based on the developer's settings, or can be determined by other means, which is not limited here. The above-mentioned first correction parameter, second correction parameter, third correction parameter and fourth correction parameter can be any type of correction parameter, for example, the corrected power of the electric heating device, or can be a power correction coefficient, or other correction parameters. The type of the above-mentioned correction parameters is not limited here. Specifically, the correction method for correcting the power of the electric heating device by the above-mentioned different correction parameters can be any method, for example, it can be specifically to calculate the sum of the correction parameter and the target power, or it can be to calculate the product of the correction coefficient and the target power. The correction method for correcting the power of the electric heating device by the above-mentioned correction parameters is also not limited here.

[0092] Combine Figure 5 As shown, an embodiment of the present disclosure provides an air conditioner anti-icing device 800, including a processor 801 and a memory 802. Optionally, the device may also include a communication interface 803 and a bus 804. The processor 801, the communication interface 803, and the memory 802 can communicate with each other through the bus 804. The communication interface 803 can be used for information transmission. The processor 801 can call the logic instructions in the memory 802 to execute the air conditioner anti-icing method of the above embodiment.

[0093] In addition, the logic instructions in the memory 802 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.

[0094] Memory 802, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. Processor 801 executes the program instructions / modules stored in memory 802 to execute functional applications and process data, thereby implementing the air conditioner anti-icing method in the above-mentioned embodiments.

[0095] The memory 802 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 802 may include high-speed random access memory and non-volatile memory.

[0096] Combine Figure 6 As shown, an embodiment of the present disclosure provides an air conditioner 900, comprising: an air conditioner body, and the above-mentioned air conditioner anti-icing device 800. The air conditioner anti-icing device 800 is installed on the air conditioner body. The installation relationship described here is not limited to placement inside the air conditioner, but also includes installation connections with other components of the air conditioner, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the air conditioner anti-icing device 800 can be adapted to a feasible air conditioner body, thereby realizing other feasible embodiments.

[0097] 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 air conditioner anti-icing method.

[0098] The technical solutions 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, an optical disk, or other media that can store program code.

[0099] 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.

[0100] 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.

[0101] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.), can be implemented in other manners. For example, the described apparatus embodiments can be implemented only in a form of a logical function, and can be implemented by using a manner such as software (for example, application program) or the like. In some embodiments, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or indirect coupling between different units, or the coupling or direct coupling or indirect coupling between the displayed or discussed communication connections can be in a form of electrical, mechanical or other forms.

[0102] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions and operations of the system, method and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code containing one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions noted in the blocks can occur in an order different from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in an order different from that disclosed in the descriptions, 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, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for preventing air conditioning from freezing, characterized in that: The air conditioner includes a water heating device and an electric heating device; the method includes: When the air conditioner outdoor unit is powered off, detect the outdoor ambient temperature; When the outdoor ambient temperature is less than or equal to a first temperature threshold, controlling the water heating device to heat the outdoor heat exchanger and detecting the water temperature of the outdoor heat exchanger; When the water temperature of the outdoor heat exchanger is less than or equal to the first water temperature threshold, the electric heating device is controlled to heat the outdoor heat exchanger.

2. The method according to claim 1, characterized in that The water heating device includes a water heating module and a water circulation module; controlling the water heating module to heat the outdoor heat exchanger includes: According to the outdoor ambient temperature, the water heating module and / or water circulation module are controlled to start and stop.

3. The method according to claim 2, characterized in that The water heating device also includes a water storage tank; according to the outdoor ambient temperature, the water heating module and / or the water circulation module are controlled to start and stop, including: When the outdoor ambient temperature is less than or equal to a first temperature threshold, the water heating module is started to heat the water in the water tank; When the outdoor ambient temperature is less than or equal to the second temperature threshold, the water circulation module is started.

4. The method according to claim 3, characterized in that Start the water heating module to heat the water in the water tank, including: Adjust the water temperature in the water tank according to the outdoor ambient temperature.

5. The method according to claim 3, characterized in that Start water circulation module, including: According to the outdoor ambient temperature, the water circulation flow rate of the water circulation module is adjusted.

6. The method according to claim 5, characterized in that According to the outdoor ambient temperature, the water circulation flow rate of the water circulation module is adjusted, including: According to the corresponding relationship between the outdoor ambient temperature and the water circulation flow rate, the target flow rate corresponding to the current outdoor ambient temperature is determined; Adjust the water circulation flow rate of the water circulation module to the target flow rate; Among them, the outdoor ambient temperature is negatively correlated with the target flow rate.

7. The method according to any one of claims 1 to 6, characterized in that Control the electric heating device to heat the outdoor heat exchanger, including: According to the water temperature of the outdoor heat exchanger, the power of the electric heating device is adjusted.

8. An air conditioner anti-icing device, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the air conditioner anti-icing method according to any one of claims 1 to 7 when running the program instructions.

9. An air conditioner, characterized in that: include: Air conditioner body, including water heating device and electric heating device; as well as, The air conditioner anti-icing device according to claim 8 is installed on the air conditioner body.

10. A computer-readable storage medium storing program instructions, characterized in that: When the program instructions are executed, the computer is configured to execute the air conditioner anti-icing method according to any one of claims 1 to 7.

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