CN117006609A - Method and device for controlling defrosting of air conditioner, air conditioner and storage medium - Google Patents

Abstract

The application relates to the technical field of refrigeration, and discloses a method for controlling defrosting of an air conditioner, wherein the air conditioner comprises an outdoor electric heating device, and the method comprises the following steps: in response to the defrost command, activating an outdoor electric heating device; monitoring the temperature of an outdoor coil in the running process of the outdoor electric heating device; and controlling the opening degree of the electronic expansion valve to be increased from the initial opening degree to the target defrosting opening degree under the condition that the temperature of the outdoor coil is smaller than the first defrosting temperature threshold value. In the starting stage of defrosting, the opening degree of the electronic expansion valve is unchanged, so that unnecessary influence on the heating process is avoided. In the further defrosting process, the outdoor electric heating device is kept in an on state and used as an auxiliary defrosting device for defrosting the outdoor unit. The opening degree of the electronic expansion valve increase is smaller, so that the influence of the electronic expansion valve increase on the heating process is reduced, the influence of the defrosting process on the indoor environment temperature is reduced, and the user experience is optimized. The application also discloses a device for controlling the defrosting of the air conditioner, the air conditioner and a storage medium.

Description

Method and device for controlling defrosting of air conditioner, air conditioner and storage medium

Technical Field

The present application relates to the field of refrigeration technology, and for example, to a method and apparatus for controlling defrosting of an air conditioner, and a storage medium.

Background

In the heating process in the low-temperature environment, the heat exchanger of the outdoor unit is easy to frost along with the reduction of the outdoor environment temperature. The frosted outdoor unit has poor heat exchange effect, so that the heating output capacity of the indoor room is reduced, and the air conditioner is generally switched to a refrigeration mode at the moment to realize frosting of the outdoor heat exchanger. However, the outdoor heat exchanger operates the defrosting process in the refrigerating mode, so that the indoor environment temperature is greatly reduced, and the influence on the comfort of the room is great.

There is provided a method for controlling defrosting of an air conditioner in the related art, including: when the air conditioner operates in a heating mode, obtaining temperature parameters of an outdoor heat exchanger of the air conditioner; and when the temperature parameter meets the frosting condition, controlling a throttling device between the outdoor heat exchanger and the indoor heat exchanger to be opened to the maximum opening degree so as to defrost the outdoor heat exchanger.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the throttling device is opened to the maximum opening, and the throttling process is seriously influenced or even cannot be performed, so that the heating cycle is greatly influenced, and the defrosting process generates larger temperature fluctuation to influence the comfort level of a user.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a method, a device, an air conditioner and a storage medium for controlling defrosting of an air conditioner, so as to reduce the influence of the defrosting process on indoor environment temperature, and further improve user comfort.

In some embodiments, the air conditioner includes an outdoor electric heating device, the method comprising: in response to the defrost command, activating an outdoor electric heating device; monitoring the temperature of an outdoor coil in the running process of the outdoor electric heating device; and controlling the opening degree of the electronic expansion valve to be increased from the initial opening degree to the target defrosting opening degree under the condition that the temperature of the outdoor coil is smaller than the first defrosting temperature threshold value.

Optionally, the determining manner of the target defrosting opening degree includes: obtaining indoor air outlet temperature; and determining the target defrosting opening degree of the electronic expansion valve according to the indoor air outlet temperature.

Optionally, determining the target defrosting opening degree of the electronic expansion valve according to the indoor air outlet temperature includes: under the condition that the indoor air outlet temperature is larger than a first air outlet temperature threshold value, determining that the target defrosting opening of the electronic expansion valve is the first opening; under the condition that the indoor air outlet temperature is smaller than or equal to the first air outlet temperature threshold value, determining that the target defrosting opening of the electronic expansion valve is the second opening; wherein the first opening is smaller than the second opening.

Optionally, activating the outdoor electric heating device, including: obtaining indoor air outlet temperature; determining the operation strength of the outdoor electric heating device according to the indoor air outlet temperature; and controlling the operation of the outdoor electric heating device according to the operation intensity.

Optionally, determining the operation intensity of the electric heating device according to the indoor air outlet temperature includes: under the condition that the indoor air outlet temperature is smaller than a first temperature threshold value, determining the target electric heating intensity as a first intensity; determining the target electric heating intensity as the second intensity under the condition that the air outlet temperature of the outdoor unit is greater than or equal to the first temperature threshold value; wherein the first intensity is greater than the second intensity.

Optionally, the method for determining the first defrosting temperature threshold includes: before the outdoor electric heating device is started, the average value of the temperature of the outdoor coil pipe in a first preset time interval is obtained and is recorded as a first average temperature; a first defrost temperature threshold is determined based on the first average temperature.

Optionally, determining the first defrost temperature threshold according to the first average temperature includes: calculating a first defrosting temperature threshold value as a difference value between a first average temperature and a first correction temperature; wherein the first corrected temperature is greater than 0.

Optionally, the determining manner of the defrosting instruction includes: obtaining an outdoor coil temperature after the continuous run length of the compressor reaches a first time length; and generating a defrosting command when the outdoor coil temperature is less than the second defrosting temperature threshold.

Optionally, the determining manner of the second defrosting temperature threshold includes: acquiring an average value of the temperature of the outdoor coil pipe in a second preset time interval before the outdoor electric heating device is started, and recording the average value as a second average temperature; a second defrost temperature threshold is determined based on the second average temperature.

Optionally, determining the second defrost temperature threshold from the second average temperature includes: calculating a second defrosting temperature threshold value as a difference value between the second average temperature and the second correction temperature; wherein the second corrected temperature is greater than 0.

Optionally, the air conditioner further comprises an indoor electric heating device; in the event that the outdoor coil temperature is less than the first defrost temperature threshold, the method further comprises: and controlling the indoor electric heating device to start under the condition that the indoor air outlet temperature is smaller than the third air outlet temperature threshold value.

Optionally, after controlling the opening of the electronic expansion valve to increase from the initial opening to the target defrosting opening, further includes: controlling the opening of the electronic expansion valve to be reduced to an initial opening under the condition that the real-time outdoor coil temperature is greater than or equal to a third defrosting temperature threshold value; and controlling the outdoor electric heating device to stop electric heating.

In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to perform the above-described method for controlling defrosting of an air conditioner when the program instructions are executed.

In some embodiments, the air conditioner includes: an air conditioner body provided with an outdoor electric heating device; the device for controlling defrosting of the air conditioner is arranged on the air conditioner body.

In some embodiments, the storage medium stores program instructions that, when executed, perform the method for controlling defrosting of an air conditioner described above.

The method, the device, the air conditioner and the storage medium for controlling defrosting of the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

when defrosting is needed, the outdoor electric heating device is started to heat and defrost the outdoor unit. And monitoring the outdoor coil temperature during operation of the electrical heating device. If the temperature of the outdoor coil is smaller than the first defrosting temperature threshold, the fact that the current defrosting requirement cannot be met only by means of the outdoor electric heating device is indicated, at the moment, the opening of the electronic expansion valve is controlled to be increased from the initial opening to the target defrosting opening, the temperature of the refrigerant flowing to the outdoor unit is increased, and therefore defrosting of the outdoor electric heating device is achieved. In this way, the opening degree of the electronic expansion valve is not adjusted in the starting stage of defrosting, and unnecessary influence on the heating process is avoided. In the process of increasing the opening of the electronic expansion valve to defrost, the outdoor electric heating device is kept in an open state and used as an auxiliary defrosting device for defrosting the outdoor unit. Under the condition of realizing the same defrosting effect, the opening degree of the electronic expansion valve which needs to be increased is smaller, so that the influence of the increase of the electronic expansion valve on the heating process is reduced, the influence of the defrosting process on the indoor environment temperature is reduced, and the user experience is optimized.

In addition, the outdoor electric heating device performs auxiliary defrosting, which is beneficial to shortening the time required by the defrosting process, thereby reducing the influence of the whole defrosting process on the indoor environment temperature and playing a role in optimizing the user experience.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic diagram of a method for controlling defrosting of an air conditioner provided by an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another method for controlling defrosting of an air conditioner provided by an embodiment of the disclosure;

FIG. 3 is a schematic diagram of another method for controlling defrosting of an air conditioner provided by an embodiment of the disclosure;

FIG. 4 is a schematic diagram of another method for controlling defrosting of an air conditioner provided by an embodiment of the disclosure;

FIG. 5 is a schematic diagram of an apparatus for controlling defrosting of an air conditioner provided by an embodiment of the present disclosure;

fig. 6 is a schematic view of an air conditioner provided in an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.

Embodiments of the present disclosure provide an air conditioner including an outdoor electric heating device configured to electrically heat an outdoor unit. The air conditioner further includes a processor.

Referring to fig. 1, an embodiment of the present disclosure provides a method for controlling defrosting of an air conditioner, including:

s101, the processor responds to a defrosting instruction to start the outdoor electric heating device.

S102, the processor monitors the temperature of the outdoor coil in the operation process of the electric heating device.

S103, in the case that the outdoor coil temperature is less than the first defrosting temperature threshold, the processor controls the opening degree of the electronic expansion valve to increase from the initial opening degree to the target defrosting opening degree.

By adopting the method for controlling the defrosting of the air conditioner, provided by the embodiment of the disclosure, under the condition that the defrosting is required, the outdoor electric heating device is started to heat and defrost the outdoor unit. And monitoring the outdoor coil temperature during operation of the electrical heating device. If the temperature of the outdoor coil is smaller than the first defrosting temperature threshold, the fact that the current defrosting requirement cannot be met only by means of the outdoor electric heating device is indicated, at the moment, the opening of the electronic expansion valve is controlled to be increased from the initial opening to the target defrosting opening, the temperature of the refrigerant flowing to the outdoor unit is increased, and therefore defrosting of the outdoor electric heating device is achieved. In this way, the opening degree of the electronic expansion valve is not adjusted in the starting stage of defrosting, and unnecessary influence on the heating process is avoided. In the process of increasing the opening of the electronic expansion valve to defrost, the outdoor electric heating device is kept in an open state and used as an auxiliary defrosting device for defrosting the outdoor unit. Under the condition of realizing the same defrosting effect, the opening degree of the electronic expansion valve which needs to be increased is smaller, so that the influence of the increase of the electronic expansion valve on the heating process is reduced, the influence of the defrosting process on the indoor environment temperature is reduced, and the user experience is optimized.

In addition, the outdoor electric heating device performs auxiliary defrosting, which is beneficial to shortening the time required by the defrosting process, thereby reducing the influence of the whole defrosting process on the indoor environment temperature and playing a role in optimizing the user experience.

Alternatively, the defrost instruction may be directly input by the user through the input device. The input device may be a key, a remote control, an interactive screen, a smart phone, etc. Therefore, the defrosting process can be started according to the needs of the user, and the defrosting process is ensured to be consistent with the actual needs of the user.

Alternatively, the defrost instruction may be an instruction automatically generated according to the operating conditions of the air conditioner and/or current environmental parameters. And generating a defrosting instruction to start the defrosting process under the condition that the running condition of the air conditioner and/or the current environmental parameters indicate that the air conditioner is frosted or is easy to frost. Therefore, the frosting process can be controlled according to the actual running condition, and the intelligentization of the frosting process is improved.

Optionally, the determining manner of the target defrosting opening degree includes: the processor obtains indoor air outlet temperature and determines target defrosting opening of the electronic expansion valve according to the indoor air outlet temperature. The indoor air outlet temperature can reflect frosting conditions, and matching the opening of the electronic expansion valve according to the indoor air outlet temperature is beneficial to guaranteeing coordination and unification between defrosting opening and frosting conditions, and avoiding unnecessary negative influence on a throttling process caused by overlarge opening of the electronic expansion valve while guaranteeing defrosting effect.

Optionally, the processor determines the target defrosting opening degree of the electronic expansion valve according to the indoor air outlet temperature, including: and under the condition that the indoor air outlet temperature is larger than the first air outlet temperature threshold value, the processor determines that the target defrosting opening degree of the electronic expansion valve is the first opening degree. And under the condition that the indoor air outlet temperature is less than or equal to the first air outlet temperature threshold value, the processor determines that the target defrosting opening degree of the electronic expansion valve is the second opening degree. Wherein the first opening is smaller than the second opening. The indoor air outlet temperature is lower, and the frosting condition of the air conditioner is severe, and at the moment, the electronic expansion valve is opened to a larger opening degree, so that the defrosting with larger intensity is realized, the defrosting effect is optimized, and the defrosting time is shortened. The indoor air outlet temperature is higher, so that the frosting condition of the air conditioner is lighter, the electronic expansion valve is opened to a smaller opening degree, the unnecessary increase of the opening degree of the electronic expansion valve is reduced as much as possible while the defrosting effect is ensured, and the influence on heating circulation is reduced.

Optionally, the processor determines the target defrosting opening degree of the electronic expansion valve according to the indoor air outlet temperature, including: and under the condition that the indoor air outlet temperature is greater than the first air outlet threshold value, the processor determines that the target defrosting opening degree of the electronic expansion valve is the first opening degree. And under the condition that the indoor air outlet temperature is smaller than or equal to the first air outlet temperature threshold value and larger than the second air outlet temperature threshold value, the processor determines that the target defrosting opening of the electronic expansion valve is the second opening. And under the condition that the indoor air outlet temperature is less than or equal to the second air outlet temperature threshold value, the processor determines that the target defrosting opening degree of the electronic expansion valve is the third opening degree. Wherein the first opening is smaller than the second opening, and the second opening is smaller than the third opening. Therefore, the indoor air outlet temperature is divided more finely and corresponds to different opening degrees of the electronic expansion valve respectively, and accuracy of the opening degree determining process of the electronic expansion valve is improved. It can be understood that in practical application, the indoor air outlet temperature can be segmented less or more according to practical requirements, and the opening of the corresponding electronic expansion valve can be adjusted.

Illustratively, the first opening is 400 steps, the second opening is 430 steps, and the third opening is 480 steps.

The determining mode of the first air outlet temperature threshold value and the second air outlet temperature threshold value comprises the following steps: when the outdoor coil temperature meets a temperature threshold value smaller than the first defrosting temperature, the processor determines that the air outlet temperature at the moment is the initial air outlet temperature Tc0, and determines a first air outlet temperature threshold value and a second air outlet temperature threshold value according to the initial air outlet temperature. More specifically, the processor determines the first outlet air temperature threshold as the difference of the initial outlet air temperature minus the first temperature and the second outlet air temperature threshold as the difference of the initial outlet air temperature minus the second temperature. Wherein the first temperature is less than the second temperature. For example, the first outlet air temperature threshold is Tc0-1, and the second outlet air temperature threshold is Tc0-2. Therefore, the air outlet temperature threshold value is set according to the actual running condition, and the accuracy of the air outlet temperature threshold value is improved.

As shown in conjunction with fig. 2, an embodiment of the present disclosure provides another method for controlling defrosting of an air conditioner, including:

s201, the processor responds to the defrosting instruction to obtain indoor air-out temperature.

S202, the processor determines the operation strength of the outdoor electric heating device according to the indoor air outlet temperature.

And S203, the processor controls the operation of the outdoor electric heating device according to the operation intensity.

S204, the processor monitors the temperature of the outdoor coil in the operation process of the electric heating device.

S205, in the case that the outdoor coil temperature is less than the first defrosting temperature threshold, the processor controls the opening degree of the electronic expansion valve to increase from the initial opening degree to the target defrosting opening degree.

The indoor air outlet temperature can reflect the influence of frosting condition, so that the operation intensity of the outdoor electric heating device is adjusted according to the indoor air outlet temperature, the accuracy of the heating process of outdoor electric heating is improved, and the defrosting effect is optimized.

In the running process of the outdoor electric heating device, the air outlet temperature can be detected for a plurality of times, the running strength of the outdoor electric heating device can be determined according to the air outlet temperature, and the running control of the electric heating device is updated, so that the running of the electric heating device is more in line with the actual situation.

Optionally, the processor determines the operation intensity of the outdoor electric heating device according to the indoor air outlet temperature, including: the processor determines that the operating intensity of the outdoor electric heating device is a first intensity in the case that the indoor air outlet temperature is less than a first temperature threshold. The processor determines that the operation intensity of the outdoor electric heating device is the second intensity when the air outlet temperature of the outdoor unit is greater than or equal to the first temperature threshold value. Wherein the first intensity is greater than the second intensity. Therefore, the frosting degree of the outdoor unit is determined through the indoor air outlet temperature, and the defrosting process is accelerated by adopting larger operation strength under the condition that the frosting degree is serious, so that the defrosting effect is further ensured. Under the condition of lower frosting degree, smaller operation strength is adopted so as to avoid unnecessary resource waste. The operating intensity may be represented by a gear, for example, a first intensity corresponds to a high gear and a second intensity corresponds to a low gear.

Optionally, the first temperature threshold is equal to the second outlet air temperature threshold.

And under the condition that the indoor air outlet temperature is larger than the first air outlet temperature threshold value, the processor determines that the opening of the electronic expansion valve is the first opening, and the operation strength of the outdoor electric heating device is the second strength. And under the condition that the indoor air outlet temperature is smaller than or equal to the first air outlet temperature threshold value and larger than the second air outlet temperature threshold value, the processor determines that the opening of the electronic expansion valve is the second opening, and the operation strength of the outdoor electric heating device is the second strength. Wherein the second opening is larger than the first opening. And under the condition that the indoor air outlet temperature is less than or equal to the second air outlet temperature threshold value, the processor determines that the opening degree of the electronic expansion valve is the third opening degree, and the operation strength of the outdoor electric heating device is the first strength. Wherein the third opening is greater than the second opening and the first intensity is greater than the second intensity. Thus, the association relation between the electronic expansion valve control and the outdoor electric heating control is enhanced.

As shown in conjunction with fig. 3, an embodiment of the present disclosure provides another method for controlling defrosting of an air conditioner, including:

s301, after the continuous operation duration of the compressor reaches the first duration, the processor obtains the outdoor coil temperature.

S302, in the case that the outdoor coil temperature is smaller than a second defrosting temperature threshold value, the processor generates a defrosting command.

S303, the processor responds to the defrosting instruction to start the outdoor electric heating device.

S304, the processor monitors the temperature of the outdoor coil in the operation process of the electric heating device.

S305, in the case that the outdoor coil temperature is less than the first defrosting temperature threshold, the processor controls the opening degree of the electronic expansion valve to increase from the initial opening degree to the target defrosting opening degree.

Wherein the first time period has a value ranging from 10 minutes to 30 minutes. Preferably 20 minutes.

Optionally, the determining manner of the first defrosting temperature threshold includes: and before the outdoor electric heating device is started, obtaining an average value of the temperature of the outdoor coil pipe in a first preset time interval, recording the average value as a first average temperature, and determining a first defrosting temperature threshold value according to the first average temperature. Therefore, different first defrosting temperature thresholds are determined according to different actual conditions, so that the judging process is more in line with the actual conditions, and the judging accuracy is improved.

More specifically, the first preset time interval is a time interval in a first duration. For example, for a time interval between 10 minutes and 15 minutes during which the compressor is continuously operated. The outdoor coil temperature within the first preset time interval is detected, and an average value of the outdoor coil temperature within the first preset time interval is calculated as a first average temperature to determine a first defrost temperature threshold. The 10 th to 15 th minutes are taken as a first preset time interval, the running of the air conditioner in the time interval is stable, meanwhile, the outdoor unit of the air conditioner is not frosted or the frosting degree is low due to the fact that the running time is not long, the temperature of the outdoor coil is hardly affected by frosting, and the accuracy of the value of the first defrosting temperature threshold value is guaranteed.

Optionally, the processor determines a first defrost temperature threshold based on the first average temperature, including: the processor calculates a first defrost temperature threshold as a difference between the first average temperature and the first correction temperature. Wherein the first corrected temperature is greater than 0. The first correction temperature is, for example, 2 ℃.

Optionally, in the case that the outdoor coil temperature is less than the first defrost temperature threshold, the processor controls the opening of the electronic expansion valve to increase from the initial opening to the target defrost opening, including: the processor obtains a duration that the outdoor coil temperature is less than the first defrost temperature threshold, and when the duration reaches the first stable duration, the processor controls the opening of the electronic expansion valve to increase from the initial opening to the target defrost opening. Therefore, misjudgment caused by transient temperature fluctuation can be avoided, and accuracy of judging the adjusting condition of the electronic expansion valve in the defrosting process can be improved. Wherein the first stabilizing period has a value ranging from 1 minute to 5 minutes. Preferably 3 minutes.

After the processor obtains a duration of time that the outdoor coil temperature is less than the first defrost temperature threshold, if the duration of time is less than the first stationary duration of time, resetting the timer.

Optionally, the determining manner of the second defrosting temperature threshold includes: the processor obtains an average value of the outdoor coil temperature over a second predetermined time interval before the outdoor electric heating device is started, records the average value as a second average temperature, and determines a second defrost temperature threshold based on the second average temperature.

More specifically, the second preset time interval is a time interval in the first duration. For example 20 minutes during which the compressor is continuously running. That is, the average of the outdoor coil temperatures over a first period of time during which the compressor is continuously running is taken as the second average temperature.

Optionally, the processor determines a second defrost temperature threshold based on a second average temperature, including: the processor calculates a second defrost temperature threshold as a difference between the second average temperature and the second correction temperature. Wherein the second corrected temperature is greater than 0. The second correction temperature is, for example, 1 ℃.

Optionally, in the event that the outdoor coil temperature is less than a second defrost temperature threshold, the processor generates a defrost instruction comprising: the processor obtains a duration of time that the outdoor coil temperature is less than the second defrost temperature threshold, and generates a defrost command if the duration of time reaches a second stable duration of time. Therefore, erroneous judgment caused by short-time temperature fluctuation can be avoided, and the accuracy of judging the defrosting instruction generation condition is improved. After the processor obtains a duration of time that the outdoor coil temperature is less than the second defrost temperature threshold, if the duration of time is less than the second stationary duration of time, the timer is reset.

Optionally, the second stabilizing period is 20 seconds.

Optionally, the air conditioner further comprises: an indoor electric heating device.

Optionally, in the case that the outdoor coil temperature is less than the first defrost temperature threshold, the method for controlling air conditioner defrost further comprises: and under the condition that the indoor air outlet temperature is smaller than the third air outlet temperature threshold value, the processor controls the indoor electric heating device to be started. Under the condition that indoor air outlet temperature is reduced, indoor heating is carried out through the indoor electric heating device arranged on the indoor side, so that indoor heat loss is compensated, and user experience is optimized.

Optionally, the third outlet air temperature threshold is less than the second outlet air temperature threshold. Namely, when the indoor air outlet temperature is smaller than the second air outlet temperature threshold value, the outdoor electric heating device operates at the first intensity, and the electronic expansion valve is opened to the third opening degree, the control requirement is further divided according to the third air outlet temperature threshold value. And under the condition that the indoor air outlet temperature is smaller than the third air outlet temperature threshold value, starting the indoor electric heating device to further supplement indoor heat.

As shown in conjunction with fig. 4, an embodiment of the present disclosure provides another method for controlling defrosting of an air conditioner, including:

s401, the processor responds to the defrosting instruction to start the outdoor electric heating device.

S402, the processor monitors the temperature of the outdoor coil during the operation of the electric heating device.

S403, in a case where the outdoor coil temperature is less than the first defrosting temperature threshold, the processor controls the opening degree of the electronic expansion valve to increase from the initial opening degree to the target defrosting opening degree.

S404, controlling the opening degree of the electronic expansion valve to be reduced to an initial opening degree by the processor under the condition that the real-time outdoor coil temperature is greater than or equal to a third defrosting temperature threshold value; and controlling the outdoor electric heating device to stop electric heating.

In this way, when the temperature of the outdoor coil reaches the third defrosting temperature threshold value in the defrosting process, the defrosting is finished, at the moment, the opening of the electronic expansion valve is controlled to return to the initial opening to continue to operate according to the original operation mode, and the outdoor electric heating device is controlled to stop electric heating. Thereby realizing the automatic closing of the defrosting process.

Wherein the third defrost temperature threshold has a value in the range of 2 ℃ to 5 ℃, preferably 3 ℃.

And if the indoor electric heating device is in an on state under the condition that the real-time outdoor coil temperature is greater than or equal to the third defrosting temperature threshold value, the processor controls the indoor electric heating device to be turned off.

In the event that the real-time outdoor coil temperature is greater than or equal to the third defrost temperature threshold, the method for controlling air conditioner defrost further comprises: the processor resets the continuous run time of the compressor.

As shown in connection with fig. 5, an embodiment of the present disclosure provides an apparatus 200 for controlling defrosting of an air conditioner, including a processor (processor) 50 and a memory (memory) 51. Optionally, the apparatus may also include a communication interface (Communication Interface) 52 and a bus 53. The processor 50, the communication interface 52, and the memory 51 may communicate with each other via a bus 53. Communication interface 52 may be used for information transfer. The processor 50 may call logic instructions in the memory 51 to perform the method for controlling defrosting of an air conditioner of the above-described embodiment.

Further, the logic instructions in the memory 51 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.

The memory 51 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 50 executes functional applications and data processing by running program instructions/modules stored in the memory 51, i.e., implements the method for controlling defrosting of an air conditioner in the above-described embodiments.

The memory 51 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 51 may include a high-speed random access memory, and may also include a nonvolatile memory.

As shown in connection with fig. 6, an embodiment of the present disclosure provides an air conditioner 100, including: an air conditioner body, and the above-mentioned device 200 for controlling defrosting of the air conditioner. The apparatus 200 for controlling defrosting of an air conditioner is installed at an air conditioner body. The mounting relationships described herein are not limited to placement within a product, but include mounting connections to other components of a product, including but not limited to physical, electrical, or signal transmission connections, etc. Those skilled in the art will appreciate that the apparatus 200 for controlling defrosting of an air conditioner may be adapted to a viable product body, thereby achieving other viable embodiments.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling defrosting of an air conditioner.

The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.

Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. A method for controlling defrosting of an air conditioner, wherein the air conditioner includes an outdoor electric heating device, the method comprising:

in response to the defrost command, activating an outdoor electric heating device;

monitoring the temperature of an outdoor coil in the running process of the outdoor electric heating device;

and controlling the opening degree of the electronic expansion valve to be increased from the initial opening degree to the target defrosting opening degree under the condition that the temperature of the outdoor coil is smaller than the first defrosting temperature threshold value.

2. The method of claim 1, wherein the manner in which the target defrost opening is determined comprises:

obtaining indoor air outlet temperature;

and determining the target defrosting opening degree of the electronic expansion valve according to the indoor air outlet temperature.

3. The method of claim 2, wherein determining a target defrost opening of the electronic expansion valve based on the indoor outlet air temperature comprises:

under the condition that the indoor air outlet temperature is larger than a first air outlet temperature threshold value, determining that the target defrosting opening of the electronic expansion valve is the first opening;

under the condition that the indoor air outlet temperature is smaller than or equal to the first air outlet temperature threshold value, determining that the target defrosting opening of the electronic expansion valve is the second opening;

wherein the first opening is smaller than the second opening.

4. The method of claim 1, wherein activating the outdoor electric heating device comprises:

obtaining indoor air outlet temperature;

determining the operation strength of the outdoor electric heating device according to the indoor air outlet temperature;

and controlling the operation of the outdoor electric heating device according to the operation intensity.

5. The method of claim 1, wherein the defrost instruction is determined in a manner comprising:

obtaining an outdoor coil temperature after the continuous run length of the compressor reaches a first time length;

and generating a defrosting command when the outdoor coil temperature is less than the second defrosting temperature threshold.

6. The method of any one of claims 1 to 5, wherein the air conditioner further comprises an indoor electric heating device; in the event that the outdoor coil temperature is less than the first defrost temperature threshold, the method further comprises:

and controlling the indoor electric heating device to start under the condition that the indoor air outlet temperature is smaller than the third air outlet temperature threshold value.

7. The method according to any one of claims 1 to 5, wherein after controlling the opening degree of the electronic expansion valve to increase from the initial opening degree to the target defrosting opening degree, further comprising:

controlling the opening of the electronic expansion valve to be reduced to an initial opening under the condition that the real-time outdoor coil temperature is greater than or equal to a third defrosting temperature threshold value; and is combined with the other components of the water treatment device,

the outdoor electric heating device is controlled to stop electric heating.

8. An apparatus for controlling defrosting of an air conditioner comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling defrosting of an air conditioner according to any one of claims 1 to 7 when the program instructions are run.

9. An air conditioner, comprising:

an air conditioner body provided with an outdoor electric heating device;

the apparatus for controlling defrosting of an air conditioner of claim 8 is installed to the air conditioner body.

10. A storage medium storing program instructions which, when executed, perform the method for controlling defrosting of an air conditioner according to any one of claims 1 to 7.