Anti-frosting method, anti-frosting device and air conditioner of air conditioner outdoor unit

Abstract

The application provides a frost prevention method, a frost prevention device and an air conditioner for an air conditioner outdoor unit. The frost prevention method for the air conditioner outdoor unit comprises the following steps: S1, obtaining a working mode in which the air conditioner currently locates and outdoor environment information of an outdoor environment in which the outdoor unit locates; S2, determining that the air conditioner is in a heating mode and the outdoor environment information satisfies a first set condition, and controlling a solution dehumidification device to dehumidify an air flow entering an air inlet of the outdoor unit, wherein the solution dehumidification device is arranged upstream of an outdoor heat exchanger; and S3, in the process of solution dehumidification, controlling an electric heating device to heat the solution dehumidification device to realize regeneration of dehumidification solution. The frost prevention method, the frost prevention device and the air conditioner provided by the application reduce the humidity of the air flow flowing through the outdoor heat exchanger, thereby reducing or even avoiding the risk of frost formation of the outdoor heat exchanger, avoiding frequent defrosting operation of the air conditioner, and ensuring the heating effect of the air conditioner.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and in particular to a method, device and air conditioner for preventing frost formation on an outdoor unit of an air conditioner. Background Technology

[0002] In related technologies, during the operation of an air conditioner, if the air conditioner is in heating mode after being turned on, the surface temperature of the outdoor condenser is low. When the outdoor temperature is low and the humidity is high, the outdoor condenser will frost up. Once the condenser is frosted to a certain extent, existing technologies will use a four-way valve to perform defrosting, which greatly affects the heating effect of the air conditioner. Summary of the Invention

[0003] This invention provides a method, device, and air conditioner for preventing frost formation on an outdoor unit of an air conditioner, to address the deficiencies in the prior art and achieve the following technical effects: reducing the humidity of the airflow passing through the outdoor heat exchanger, thereby reducing or even avoiding the risk of frost formation on the outdoor heat exchanger, avoiding frequent defrosting operations by the air conditioner, and ensuring the heating effect of the air conditioner.

[0004] A method for preventing frost formation on an outdoor unit of an air conditioner according to a first aspect embodiment of the present invention includes:

[0005] S1: Obtain the current operating mode of the air conditioner and the outdoor environment information of the outdoor unit.

[0006] S2, determine that the air conditioner is in heating mode and the outdoor environmental information meets the first set condition, control the solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger;

[0007] S3, during the solution dehumidification process, the electric heating device is controlled to heat the solution dehumidification device to achieve the regeneration of the dehumidification solution.

[0008] According to one embodiment of the present invention, the outdoor environmental information includes outdoor ambient temperature and outdoor ambient humidity;

[0009] Step S2 specifically includes:

[0010] If the air conditioner is in heating mode, the outdoor ambient temperature is lower than the set dehumidification temperature, and the outdoor ambient humidity is higher than the set dehumidification humidity, the solution dehumidification device is controlled to dehumidify the airflow entering the air inlet of the outdoor unit.

[0011] According to an embodiment of the present invention, step S3 specifically includes:

[0012] During the solution dehumidification process, if the outdoor ambient humidity is determined to be greater than the set dehumidification humidity, the electric heating device is controlled to heat the solution dehumidification device at set intervals for a set heating time, so as to regenerate the dehumidification solution at intervals.

[0013] According to one embodiment of the present invention, in step S3, the set interval duration is determined based on the range of outdoor ambient humidity, and the set interval duration is negatively correlated with the outdoor ambient humidity.

[0014] According to an embodiment of the present invention, step S3 specifically includes:

[0015] During the solution dehumidification process, the state of the solution inside the solution dehumidification device is obtained;

[0016] If the solution state is determined to meet the second set condition, then the electric heating device is controlled to heat the solution dehumidification device.

[0017] Once the solution state is determined to meet the third preset condition, the electric heating device is turned off.

[0018] According to one embodiment of the present invention, the solution state includes the solution mass, and the second setting condition includes: the solution mass reaches the solution saturation mass; the third setting condition includes: the solution mass decreases to the initial solution mass before dehumidification.

[0019] According to one embodiment of the present invention, the solution state includes liquid level height, then the second setting condition includes: the liquid level height reaches the solution saturation height; the third setting condition includes: the liquid level height decreases to the initial solution height before dehumidification.

[0020] According to one embodiment of the present invention, the method for preventing frost formation on the outdoor unit of an air conditioner further includes:

[0021] During the solution dehumidification process, the degree of frost formation on the outdoor heat exchanger is obtained;

[0022] Adjust the heating temperature of the electric heating device according to the degree of frost formation, and / or adjust the total amount of dehumidifying solution in the solution dehumidification device.

[0023] According to one embodiment of the present invention, the degree of frosting is positively correlated with the heating temperature of the electric heating device, and the degree of frosting is positively correlated with the total amount of dehumidifying solution in the solution dehumidification device.

[0024] According to one embodiment of the present invention, the concentration of the dehumidifying solution is determined based on the outdoor environmental information.

[0025] An anti-frost device for an outdoor unit of an air conditioner according to a second aspect embodiment of the present invention includes:

[0026] The acquisition module is used to acquire the current operating mode of the air conditioner and the outdoor environment information of the outdoor unit.

[0027] The first control module is used to determine that the air conditioner is in heating mode and that the outdoor environmental information meets the first set conditions, and to control the solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger.

[0028] The second control module is used to control the electric heating device to heat the dehumidification device during the solution dehumidification process to achieve the regeneration of the dehumidification solution.

[0029] An air conditioner according to a third aspect embodiment of the present invention includes:

[0030] Anti-frost device for outdoor unit of air conditioner as described in the second aspect embodiment of the present invention.

[0031] This invention proposes a method for preventing frost formation on an outdoor unit of an air conditioner. When there is a risk of frost formation on the outdoor heat exchanger, a solution dehumidification device is used to dehumidify the airflow entering the air inlet of the outdoor unit, thereby reducing the humidity of the airflow flowing through the outdoor heat exchanger. This reduces or even eliminates the risk of frost formation on the outdoor heat exchanger, avoids frequent defrosting operations by the air conditioner, and ensures the heating effect of the air conditioner. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a flowchart illustrating the anti-frost method for an outdoor air conditioner unit provided by the present invention.

[0034] Figure 2 This is a schematic diagram of the anti-frost device for an outdoor air conditioner unit provided by the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0037] The following description, with reference to the accompanying drawings, outlines the anti-frost method for an outdoor air conditioning unit, the solution dehumidification device, and the air conditioner proposed in this invention. Before providing a detailed description of the embodiments of this invention, the overall application scenario is first described. The anti-frost method for an outdoor air conditioning unit, the solution dehumidification device, the electronic device, and the computer-readable storage medium of this invention can be applied not only to the air conditioner itself, but also to cloud platforms in the internet field, or other types of cloud platforms in the internet field, or to third-party devices. These third-party devices may include various types such as mobile phones, tablets, laptops, in-vehicle computers, and other smart terminals.

[0038] The following description uses only the anti-frost method applicable to the outdoor unit of an air conditioner as an example. It should be understood that the method of this embodiment can also be applied to cloud platforms and third-party devices.

[0039] like Figure 1 As shown, the anti-frost method for an outdoor unit of an air conditioner according to a first aspect embodiment of the present invention includes:

[0040] S1: Obtain the current operating mode of the air conditioner and the outdoor environment information of the outdoor unit.

[0041] S2, determine that the air conditioner is in heating mode and the outdoor environmental information meets the first set condition, control the solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger.

[0042] S3, during the solution dehumidification process, the electric heating device is controlled to heat the solution dehumidification device to achieve the regeneration of the dehumidification solution.

[0043] First, it needs to be explained that the solution dehumidification device includes a dehumidification unit and a dehumidification solution regeneration unit. The dehumidification unit is filled with a dehumidification solution (such as lithium bromide). In this invention, when the incoming airflow passes through the dehumidification unit, it is first dehumidified by the dehumidification solution to obtain latent cooling. The relatively dry air then passes through an outdoor heat exchanger for cooling to obtain sensible cooling. The dehumidification solution regeneration unit is used to regenerate the dehumidified dilute solution introduced by the circulating pump, ensuring the dehumidification solution is recycled. The dehumidification solution regeneration unit typically includes a regenerator, a dilute solution tank, a concentrated solution tank, and an electric heating device. The dilute solution entering the dilute solution tank after dehumidification is heated by the electric heating device and then enters the regenerator for regeneration. It then enters the concentrated solution tank, is cooled by the cooling device, and re-enters the indoor circulation.

[0044] According to the embodiment of the present invention, the anti-frost method for an outdoor unit of an air conditioner has the following specific working process: First, after the air conditioner is turned on, the controller determines the current operating mode of the air conditioner and obtains the outdoor environment information of the outdoor environment where the outdoor unit is located. When the controller determines that the air conditioner is currently in heating mode, it can be understood that in heating mode, the outdoor heat exchanger of the air conditioner, as a condenser, exchanges heat with the outdoor environment. At this time, a low-temperature refrigerant flows through the outdoor heat exchanger, so the coil temperature of the outdoor heat exchanger is low, and thus the outdoor heat exchanger is very prone to frost formation. Furthermore, when the controller determines that the outdoor environment information meets the preset first set condition, it proves that the temperature and humidity characteristics in the outdoor environment will increase the risk of frost formation on the outdoor heat exchanger.

[0045] Therefore, in order to reduce or even avoid the risk of frost formation on the outdoor heat exchanger in heating mode, the controller will use a solution dehumidification device to dehumidify the airflow entering the outdoor unit's air inlet. This will dehumidify the airflow before it reaches the outdoor heat exchanger, thereby reducing the humidity of the incoming air and achieving the effect of no frost or less frost formation.

[0046] Furthermore, during the dehumidification process of the dehumidifier, as the dehumidifier absorbs moisture from the incoming airflow, the concentration of the dehumidifier continuously decreases. This decrease in concentration negatively impacts the dehumidification effect. Therefore, to ensure the dehumidification effect, the dehumidifier needs to be regenerated in a timely manner. Specifically, the controller will control the electric heating device to heat the dehumidifier to regenerate the dehumidifier, thereby ensuring the dehumidification effect.

[0047] In related technologies, during the operation of an air conditioner, if the air conditioner is in heating mode after being turned on, the surface temperature of the outdoor condenser is low. When the outdoor temperature is low and the humidity is high, the outdoor condenser will frost up. Once the condenser is frosted to a certain extent, existing technologies will use a four-way valve to perform defrosting, which greatly affects the heating effect of the air conditioner.

[0048] Therefore, in order to solve the technical defects existing in the above-mentioned related technologies, the present invention proposes an anti-frost method for an outdoor unit of an air conditioner. When there is a risk of frost formation on the outdoor heat exchanger, a solution dehumidification device is used to dehumidify the airflow entering the air inlet of the outdoor unit, thereby reducing the humidity of the airflow flowing through the outdoor heat exchanger, thereby reducing or even avoiding the risk of frost formation on the outdoor heat exchanger, avoiding frequent defrosting operations of the air conditioner, and ensuring the heating effect of the air conditioner.

[0049] According to some embodiments of the present invention, outdoor environmental information typically includes information such as outdoor ambient temperature and outdoor ambient humidity. By acquiring the above parameter information, the controller can infer whether the outdoor heat exchanger of the air conditioner is at risk of frosting, thereby determining whether it is necessary to dehumidify the intake airflow. In addition, outdoor environmental information may also include outdoor climate. Specifically, the outdoor environment may be cloudy, rainy, snowy, frosty, or sunny. Under different outdoor climate conditions, the risk of frosting of the outdoor heat exchanger is also different. For example, when the outdoor climate is rainy, snowy, or frosty, it indicates that the outdoor ambient temperature is low and the outdoor ambient humidity is high. At this time, the risk of frosting of the outdoor heat exchanger in heating mode is high. Therefore, it is necessary to use a solution dehumidification device to defrost the intake airflow to reduce or even avoid the risk of frosting of the outdoor heat exchanger.

[0050] Of course, the outdoor environmental information can also be composed of other components. This invention does not impose any special restrictions on the specific composition of the outdoor environmental information, as long as the outdoor environmental information can reflect the outdoor environmental temperature and outdoor environmental humidity.

[0051] According to one embodiment of the present invention, the outdoor environmental information includes outdoor ambient temperature and outdoor ambient humidity.

[0052] Step S2, which determines that the air conditioner is in heating mode and that the outdoor environmental information meets the first set condition, and controls the solution dehumidification device to dehumidify the airflow entering the outdoor unit's air inlet, specifically includes:

[0053] If the air conditioner is in heating mode, the outdoor ambient temperature is lower than the set dehumidification temperature, and the outdoor ambient humidity is higher than the set dehumidification humidity, control the solution dehumidification device to dehumidify the airflow entering the outdoor unit's air inlet.

[0054] It is understandable that when the outdoor ambient temperature is low and the outdoor ambient humidity is high, the temperature and humidity of the incoming airflow will also be low. When the untreated incoming airflow flows over the surface of the outdoor heat exchanger in heating mode, the outdoor heat exchanger will frost. Therefore, in order to avoid frost on the outdoor heat exchanger, the incoming airflow will first flow through a solution dehumidification device before flowing over the outdoor heat exchanger. The dehumidification solution absorbs the moisture in the incoming airflow to dehumidify it, thereby allowing the dry incoming airflow to flow over the outdoor heat exchanger and preventing frost from forming on the outdoor heat exchanger.

[0055] For example, when the outdoor ambient temperature is less than 5°C (i.e., the set dehumidification temperature) and the outdoor ambient humidity is greater than 50% (i.e., the set dehumidification humidity), the solution dehumidification device dehumidifies the incoming airflow with a solution.

[0056] Of course, the above embodiment is only one of the many embodiments of the present invention, and does not constitute a specific limitation on the setting of dehumidification temperature and setting of dehumidification humidity. The above setting of dehumidification temperature and setting of dehumidification humidity can be specifically limited according to the actual situation.

[0057] According to some embodiments of the present invention, step S3, which involves controlling the electric heating device to heat the dehumidification device to regenerate the dehumidification solution during the solution dehumidification process, specifically includes:

[0058] During the solution dehumidification process, if the outdoor ambient humidity is determined to be greater than the set dehumidification humidity, the electric heating device is controlled to heat the solution dehumidification device at set intervals for a set heating time, so as to regenerate the dehumidification solution at intervals.

[0059] Furthermore, in step S3, the set interval duration is determined based on the range of outdoor ambient humidity, and the set interval duration is negatively correlated with outdoor ambient humidity.

[0060] Specifically, when the outdoor ambient humidity is within a first set range, the electric heating device is controlled to heat the solution dehumidifier for a set heating time every first set time interval; when the outdoor ambient humidity is within a second set range, the electric heating device is controlled to heat the solution dehumidifier for a set heating time every second set time interval; when the outdoor ambient humidity is within a third set range, the electric heating device is controlled to heat the solution dehumidifier for a set heating time every third set time interval.

[0061] Among them, the first setting range is smaller than the second setting range, the second setting range is smaller than the third setting range, and the first setting duration is greater than the second setting duration, and the second setting duration is greater than the third setting duration.

[0062] It is understandable that when the outdoor humidity is higher, the dehumidification solution inside the dehumidifier will be consumed faster during the dehumidification of the incoming airflow. Therefore, the dehumidification solution needs to be heated for regeneration every once in a while, and the interval will be determined by the outdoor humidity. That is, the higher the outdoor humidity, the shorter the interval.

[0063] For example, during the solution dehumidification process, if the outdoor ambient humidity is greater than 50%, the electric heating device is turned on every 1.5 hours to continuously heat the solution dehumidification device for 1 minute; if the outdoor ambient humidity is greater than 50% but less than 70%, the electric heating device is turned on every 40 minutes to continuously heat the solution dehumidification device for 1 minute; if the outdoor ambient humidity is greater than 70% but less than 90%, the electric heating device is turned on every 20 minutes to continuously heat the solution dehumidification device for 1 minute; if the outdoor ambient humidity is greater than 90%, the electric heating device is turned on every 10 minutes to continuously heat the solution dehumidification device for 1 minute.

[0064] The above embodiment involves periodically heating and regenerating the solution dehumidification device at set intervals. In the following text, the present invention can also determine whether to perform the solution regeneration operation by judging the state of the dehumidification solution, thus reducing the number of solution regenerations and making the control more precise.

[0065] According to other embodiments of the present invention, step S3, which involves controlling the electric heating device to heat the dehumidification device to regenerate the dehumidification solution during the solution dehumidification process, specifically includes:

[0066] During the solution dehumidification process, the state of the solution inside the solution dehumidification device is obtained;

[0067] If the solution state meets the second set condition, then control the electric heating device to heat the solution dehumidification device;

[0068] Once the solution state meets the third set condition, turn off the electric heating device.

[0069] In this embodiment, to avoid frequent activation of the electric heating device, the controller continuously monitors the state of the dehumidification solution during the solution dehumidification process. When the solution state meets the second set condition, it indicates that the dehumidification solution has absorbed enough moisture and its concentration is too low to continue dehumidifying the incoming airflow. Therefore, the controller controls the electric heating device to heat the solution dehumidification device. During the heating process, when the state of the dehumidification solution meets the third set condition, it proves that the concentration of the dehumidification solution has returned to the original level, thereby turning off the electric heating device and allowing the solution dehumidification device to continue dehumidifying.

[0070] In some specific embodiments of the present invention, the solution state includes the solution mass, and the second setting condition includes: the solution mass reaches the solution saturation mass; the third setting condition includes: the solution mass decreases to the initial solution mass before dehumidification.

[0071] For example, a solution dehumidification device can be equipped with a mass sensor that monitors the mass change of the dehumidification solution. When the solution mass reaches the saturation mass, it proves that the dehumidification solution has absorbed enough water and its concentration is too low to continue dehumidifying the incoming airflow. When the solution mass drops to the initial mass of the solution before dehumidification, it proves that the concentration of the dehumidification solution has returned to the original level.

[0072] In other embodiments of the present invention, the solution state includes the liquid level height, and the second setting condition includes: the liquid level height reaches the solution saturation height; the third setting condition includes: the liquid level height decreases to the initial solution height before dehumidification.

[0073] For example, a solution dehumidification device can be equipped with a liquid level sensor to monitor changes in the liquid level of the dehumidification solution. When the liquid level reaches the saturation height of the solution, it indicates that the dehumidification solution has absorbed enough water and its concentration is too low to continue dehumidifying the incoming airflow. When the liquid level drops back to the initial height of the solution before dehumidification, it indicates that the concentration of the dehumidification solution has returned to its original level.

[0074] According to some embodiments of the present invention, the method for preventing frost formation on the outdoor unit of an air conditioner further includes:

[0075] During the solution dehumidification process, the degree of frost formation on the outdoor heat exchanger is obtained;

[0076] Adjust the heating temperature of the electric heating device according to the degree of frost formation, and / or adjust the total amount of dehumidifying solution in the solution dehumidification device.

[0077] It is understandable that although the solution dehumidification process dehumidifies the incoming airflow, the outdoor heat exchanger will still inevitably have a small amount of frost. In order to further reduce the degree of frost on the outdoor heat exchanger, the heat transfer of the electric heating device can be used to assist in defrosting the frost on the surface of the outdoor heat exchanger. Alternatively, the total amount of dehumidification solution can be increased to improve the dehumidification efficiency, thereby further reducing the risk of subsequent frost formation.

[0078] Furthermore, the degree of frosting is positively correlated with the heating temperature of the electric heating device, and the degree of frosting is positively correlated with the total amount of dehumidifying solution in the solution dehumidification device.

[0079] For example, after obtaining the degree of frost on the outdoor heat exchanger, the frost level is divided according to the degree of frost, that is, it is divided into the first frost level, the second frost level and the third frost level in descending order of the degree of frost.

[0080] When the first frosting level is reached, the heating temperature of the electric heating device is the first heating temperature, and / or the total amount of dehumidifying solution is the first total amount; when the second frosting level is reached, the heating temperature of the electric heating device is the second heating temperature, and / or the total amount of dehumidifying solution is the second total amount; when the third frosting level is reached, the heating temperature of the electric heating device is the third heating temperature, and / or the total amount of dehumidifying solution is the third total amount.

[0081] Among them, the first heating temperature is higher than the second heating temperature, the second heating temperature is higher than the third heating temperature, the first total is greater than the second total, and the second total is greater than the third total.

[0082] According to some embodiments of the present invention, the concentration of the dehumidifying solution is determined based on outdoor environmental information.

[0083] For example, outdoor environmental information includes outdoor temperature and outdoor humidity. When the outdoor temperature is lower and the outdoor humidity is higher, a higher concentration of solution can be selected to improve the dehumidification effect of the dehumidifying solution and match the current outdoor environment.

[0084] Preferably, the dehumidifying solution in the solution dehumidification device is generally triethylene glycol or calcium chloride solution. Taking calcium chloride solution as an example, a concentration of 40%-45% is most effective.

[0085] The anti-frost device for an outdoor air conditioner provided by the present invention will be described below. The anti-frost device for an outdoor air conditioner described below can be referred to in correspondence with the anti-frost method for an outdoor air conditioner described above.

[0086] like Figure 2 As shown, the anti-frost device for an outdoor unit of an air conditioner according to a second aspect embodiment of the present invention includes:

[0087] The acquisition module 110 is used to acquire the current working mode of the air conditioner and the outdoor environment information of the outdoor unit.

[0088] The first control module 120 is used to determine that the air conditioner is in heating mode and that the outdoor environmental information meets the first set conditions, and to control the solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit. The solution dehumidification device is located upstream of the outdoor heat exchanger.

[0089] The second control module 130 is used to control the electric heating device to heat the solution dehumidification device during the solution dehumidification process to achieve the regeneration of the dehumidification solution.

[0090] An air conditioner according to a third aspect embodiment of the present invention includes an anti-frost device for the outdoor unit of the air conditioner as described in a second aspect embodiment of the present invention.

[0091] According to the anti-frost device of the outdoor unit of the air conditioner and the air conditioner of the present invention, when there is a risk of frost formation on the outdoor heat exchanger, the solution dehumidification device is used to dehumidify the airflow entering the air inlet of the outdoor unit, thereby reducing the humidity of the airflow flowing through the outdoor heat exchanger, thereby reducing or even avoiding the risk of frost formation on the outdoor heat exchanger, avoiding frequent defrosting operations of the air conditioner, and ensuring the heating effect of the air conditioner.

[0092] Figure 3 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 3 As shown, the electronic device may include a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions in the memory 830 to execute an anti-frost method for the outdoor unit of the air conditioner. This method includes: acquiring the current operating mode of the air conditioner and outdoor environmental information of the outdoor environment where the outdoor unit is located; determining that the air conditioner is in heating mode and that the outdoor environmental information meets a first set condition; controlling a solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger; and controlling an electric heating device to heat the solution dehumidification device during the solution dehumidification process to regenerate the dehumidification solution.

[0093] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0094] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute an anti-frost method for an outdoor unit of an air conditioner. The method includes: acquiring the current operating mode of the air conditioner and outdoor environmental information of the outdoor environment where the outdoor unit is located; determining that the air conditioner is in heating mode and that the outdoor environmental information meets a first set condition; controlling a solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger; and controlling an electric heating device to heat the solution dehumidification device to regenerate the dehumidification solution during the solution dehumidification process.

[0095] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a method for preventing frost formation on an outdoor unit of an air conditioner. The method includes: acquiring the current operating mode of the air conditioner and outdoor environmental information of the outdoor environment where the outdoor unit is located; determining that the air conditioner is in heating mode and that the outdoor environmental information meets a first set condition; controlling a solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger; and during the solution dehumidification process, controlling an electric heating device to heat the solution dehumidification device to regenerate the dehumidification solution.

[0096] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0097] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preventing frost formation on an outdoor unit of an air conditioner, characterized in that, include: S1: Obtain the current operating mode of the air conditioner and the outdoor environment information of the outdoor unit. S2, determine that the air conditioner is in heating mode and the outdoor environmental information meets the first set condition, control the solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger; S3, During the solution dehumidification process, the electric heating device is controlled to heat the solution dehumidification device to achieve the regeneration of the dehumidification solution; During the solution dehumidification process, if it is determined that the outdoor ambient humidity is greater than the set dehumidification humidity, the electric heating device is controlled to heat the solution dehumidification device at set intervals for a set heating time to regenerate the dehumidification solution at intervals; the set interval is determined according to the range of the outdoor ambient humidity, and the set interval is negatively correlated with the outdoor ambient humidity.

2. The method for preventing frost formation on an outdoor unit of an air conditioner according to claim 1, characterized in that, The outdoor environmental information includes outdoor temperature and outdoor humidity; Step S2 specifically includes: If the air conditioner is in heating mode, the outdoor ambient temperature is lower than the set dehumidification temperature, and the outdoor ambient humidity is higher than the set dehumidification humidity, the solution dehumidification device is controlled to dehumidify the airflow entering the air inlet of the outdoor unit.

3. The anti-frost method for an outdoor unit of an air conditioner according to claim 2, characterized in that, Step S3 specifically includes: During the solution dehumidification process, the state of the solution inside the solution dehumidification device is obtained; If the solution state is determined to meet the second set condition, then the electric heating device is controlled to heat the solution dehumidification device. Once the solution state is determined to meet the third preset condition, the electric heating device is turned off.

4. The anti-frost method for an outdoor unit of an air conditioner according to claim 3, characterized in that, The solution state includes the solution mass, and the second setting condition includes: the solution mass reaches the solution saturation mass; the third setting condition includes: the solution mass decreases to the initial solution mass before dehumidification.

5. The anti-frost method for an outdoor unit of an air conditioner according to claim 3, characterized in that, The solution state includes the liquid level height, and the second setting condition includes: the liquid level height reaches the solution saturation height; the third setting condition includes: the liquid level height decreases to the initial solution height before dehumidification.

6. The method for preventing frost formation on an outdoor unit of an air conditioner according to any one of claims 1 to 5, characterized in that, Also includes: During the solution dehumidification process, the degree of frost formation on the outdoor heat exchanger is obtained; Adjust the heating temperature of the electric heating device according to the degree of frost formation, and / or adjust the total amount of dehumidifying solution in the solution dehumidification device.

7. The method for preventing frost formation on an outdoor unit of an air conditioner according to claim 6, characterized in that, The degree of frost formation is positively correlated with the heating temperature of the electric heating device, and the degree of frost formation is positively correlated with the total amount of dehumidifying solution in the solution dehumidification device.

8. The method for preventing frost formation on an outdoor unit of an air conditioner according to any one of claims 1 to 5, characterized in that, The concentration of the dehumidifying solution is determined based on the outdoor environmental information.

9. An anti-frost device for an outdoor unit of an air conditioner, characterized in that, include: The acquisition module is used to acquire the current operating mode of the air conditioner and the outdoor environment information of the outdoor unit. The first control module is used to determine that the air conditioner is in heating mode and that the outdoor environmental information meets the first set conditions, and to control the solution dehumidification device to dehumidify the airflow entering the air inlet of the outdoor unit, wherein the solution dehumidification device is located upstream of the outdoor heat exchanger. The second control module is used to control the electric heating device to heat the solution dehumidification device during the solution dehumidification process to achieve the regeneration of the dehumidification solution; During the solution dehumidification process, if it is determined that the outdoor ambient humidity is greater than the set dehumidification humidity, the electric heating device is controlled to heat the solution dehumidification device at set intervals for a set heating time to regenerate the dehumidification solution at intervals; the set interval is determined according to the range of the outdoor ambient humidity, and the set interval is negatively correlated with the outdoor ambient humidity.

10. An air conditioner, characterized in that, include: The anti-frost device for an outdoor air conditioning unit as described in claim 9.

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