Method and device for controlling oil return of air conditioner and air conditioner

Abstract

The application relates to the technical field of air conditioner control, and discloses a method for controlling oil return of an air conditioner, which comprises the following steps: in response to a start-up control instruction of the air conditioner, obtaining a current operation mode of the air conditioner and a fan operation gear of the air conditioner; determining a target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; and controlling the air conditioner to execute the target oil return strategy. According to the scheme, the target oil return strategy of the air conditioner compressor can be determined more accurately in combination with the obtained current operation mode of the air conditioner and the fan operation gear of the air conditioner, so that accurate oil return of the air conditioner compressor can be realized under the condition that the air conditioner executes the target oil return strategy, the wear of the compressor caused by the fact that the compressor does not return oil can be avoided, the performance of the air conditioner compressor is ensured, and the user experience is improved. The application further discloses a device for controlling oil return of an air conditioner and an air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner control, for example, to a method and device for controlling air conditioner oil return and an air conditioner. BACKGROUND

[0002] At present, the emergence of air conditioners brings more comfortable indoor environment to users, and the accuracy of air conditioner control has become the focus of users. At present, in the running process of the air conditioner, a certain amount of lubricating oil needs to be ensured in the compressor to avoid the wear of the compressor. Therefore, after the air conditioner runs for a period of time, the air conditioner compressor needs to be controlled for oil return, and the existing air conditioner compressor oil return control is usually controlled by the running frequency and running time of the compressor to realize the oil return of the compressor. However, the oil return of the air conditioner compressor by this way cannot guarantee the accuracy of the oil return, thereby affecting the performance of the air conditioner compressor.

[0003] Therefore, how to effectively improve the accuracy of air conditioner compressor oil return control has become a technical problem to be solved. SUMMARY

[0004] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0005] The embodiments of the present disclosure provide a method and device for controlling air conditioner oil return and an air conditioner, which can effectively improve the accuracy of air conditioner compressor oil return control.

[0006] In some embodiments, the method for controlling air conditioner oil return comprises: in response to a start-up control instruction of the air conditioner, obtaining a current running mode of the air conditioner and a fan running gear of the air conditioner; determining a target oil return strategy of the air conditioner according to the current running mode of the air conditioner and the fan running gear of the air conditioner; and controlling the air conditioner to execute the target oil return strategy.

[0007] In some embodiments, the method for controlling air conditioner oil return comprises: in the case that the current running mode of the air conditioner is a refrigeration mode and the fan running gear of the air conditioner is a low wind gear, obtaining liquid level information collected by a compressor liquid level sensor; and in the case that the liquid level information is lower than a first liquid level value for a first time duration, determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a first frequency and run for a first time duration.

[0008] In some embodiments, the method for controlling oil return of an air conditioner comprises: obtaining an ambient temperature outside the air conditioner and liquid level information collected by a compressor liquid level sensor, in a case that a current operation mode of the air conditioner is a cooling mode and a fan operation gear of the air conditioner is a high wind gear or a medium wind gear; determining a target oil return strategy of the air conditioner according to the ambient temperature outside the air conditioner and the liquid level information collected by the compressor liquid level sensor.

[0009] In some embodiments, the method for controlling oil return of an air conditioner comprises: determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a first frequency and run for a first time duration, in a case that an ambient temperature outside the air conditioner is not higher than a first temperature threshold and the liquid level information is lower than a first liquid level value for a time duration of the first time duration.

[0010] In some embodiments, the method for controlling oil return of an air conditioner comprises: obtaining a current operation frequency of the compressor, in a case that the ambient temperature outside the air conditioner is higher than the first temperature threshold and the liquid level information is lower than the first liquid level value for a time duration of the first time duration; determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a second frequency and run for the first time duration, in a case that the current operation frequency of the compressor is in a first frequency interval; determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a third frequency and run for the first time duration, in a case that the current operation frequency of the compressor is in a second frequency interval; wherein a maximum value in the first frequency interval is lower than a minimum value in the second frequency interval, and the second frequency is lower than the third frequency.

[0011] In some embodiments, the method for controlling oil return of an air conditioner comprises: obtaining liquid level information collected by a compressor liquid level sensor, in a case that a current operation mode of the air conditioner is a heating mode and a fan operation gear of the air conditioner is a low wind gear; determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a fourth frequency and run for a first time duration, in a case that the liquid level information is lower than a first liquid level value for a time duration of the first time duration.

[0012] In some embodiments, the method for controlling oil return of an air conditioner comprises: obtaining an ambient temperature outside the air conditioner and liquid level information collected by a compressor liquid level sensor, in a case that a current operation mode of the air conditioner is a heating mode and a fan operation gear of the air conditioner is a high wind gear or a medium wind gear; determining a target oil return strategy of the air conditioner according to the ambient temperature outside the air conditioner and the liquid level information collected by the compressor liquid level sensor.

[0013] In some embodiments, the device for controlling oil return of an air conditioner comprises: an obtaining module configured to, in response to a start-up control instruction of the air conditioner, obtain a current operation mode of the air conditioner and a fan operation gear of the air conditioner; a determining module configured to determine a target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; and a control module configured to control the air conditioner to execute the target oil return strategy.

[0014] In some embodiments, the device for controlling oil return of an air conditioner comprises: a processor and a memory storing program instructions, the processor being configured to execute the foregoing method for controlling oil return of an air conditioner when running the program instructions.

[0015] In some embodiments, the air conditioner comprises the foregoing device for controlling oil return of an air conditioner.

[0016] The method, device and air conditioner for controlling oil return of an air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects: by responding to a start-up control instruction of the air conditioner, the current operation mode of the air conditioner and the fan operation gear of the air conditioner are obtained; then, according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, the target oil return strategy of the air conditioner is determined; and then, the air conditioner is controlled to execute the target oil return strategy. With this scheme, the target oil return strategy of the air conditioner compressor can be determined more accurately in combination with the current operation mode of the air conditioner and the fan operation gear of the air conditioner, so that accurate oil return of the air conditioner compressor can be achieved when the air conditioner is controlled to execute the target oil return strategy, and the situation of compressor wear caused by no oil return of the compressor can be avoided, thereby improving the user experience and ensuring the performance of the air conditioner compressor.

[0017] The foregoing general description and the following description are merely exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] One or more embodiments are exemplarily illustrated by the corresponding drawings, which do not constitute a limitation on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limitation, and wherein:

[0019] Figure 1 is a schematic diagram of a method for controlling oil return of an air conditioner provided by the embodiments of the present disclosure;

[0020] Figure 2 is a schematic diagram of a method for determining a target oil return strategy provided by the embodiments of the present disclosure;

[0021] Figure 3 is another schematic diagram of a method for determining a target oil return strategy provided by the embodiments of the present disclosure;

[0022] Figure 4 is another schematic diagram of a method for determining a target oil return strategy provided by an embodiment of the present disclosure;

[0023] Figure 5 is a schematic diagram of an apparatus for controlling oil return of an air conditioner provided by an embodiment of the present disclosure;

[0024] Figure 6 is another schematic diagram of an apparatus for controlling oil return of an air conditioner provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] In order to enable a person skilled in the art to better understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0026] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0027] Unless otherwise specified, the term "a plurality of" means two or more.

[0028] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means A or B.

[0029] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.

[0030] The term "corresponding" can refer to an association or binding relationship. A and B correspond to each other means that there is an association or binding relationship between A and B.

[0031] In the embodiments of the present disclosure, the smart home appliance refers to a home appliance product formed after introducing microprocessors, sensor technology, network communication technology into home appliances, having the characteristics of intelligent control, intelligent sensing and intelligent application, and the operation process of the smart home appliance often depends on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips. For example, the smart home appliance can realize remote control and management of the smart home appliance by connecting electronic devices.

[0032] In the embodiments of the present disclosure, the terminal device refers to an electronic device with wireless connection function. The terminal device can be connected to the smart home appliance as described above through the Internet, or can be directly connected to the smart home appliance as described above through Bluetooth, Wi-Fi and the like. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a built-in vehicle device in a hovercar, or any combination thereof. The mobile device may, for example, include a mobile phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or any combination thereof, wherein the wearable device may, for example, include a smart watch, a smart bracelet, a pedometer, and the like.

[0033] Figure 1 is a schematic diagram of a method for controlling oil return of an air conditioner provided by an embodiment of the present disclosure; in combination with Figure 1 The present disclosure provides a method for controlling oil return of an air conditioner, which comprises the following steps:

[0034] S11, the air conditioner acquires the current running mode of the air conditioner and the fan running gear of the air conditioner in response to the start-up control instruction of the air conditioner.

[0035] S12, the air conditioner determines the target oil return strategy of the air conditioner according to the current running mode of the air conditioner and the fan running gear of the air conditioner.

[0036] S13, the air conditioner controls the execution of the target oil return strategy.

[0037] In this scheme, after the air conditioner receives the start-up control instruction of the air conditioner, the air conditioner can execute the start-up operation in response to the start-up control instruction of the air conditioner, and the current running mode of the air conditioner and the fan running gear of the air conditioner can be acquired. Here, the running mode of the air conditioner can be a cooling mode or a heating mode. The fan running gear of the air conditioner can be a high wind gear, a medium wind gear or a low wind gear. Specifically, the air conditioner can acquire the current running mode of the air conditioner by acquiring the running state information on the display panel of the air conditioner or the display panel of the associated remote control device; the air conditioner can also acquire the current speed of the air conditioner fan through the air speed sensor to match the fan running gear of the air conditioner. With this scheme, the acquisition timing of the current running mode of the air conditioner and the fan running gear of the air conditioner can be determined, and the accurate acquisition of the current running mode of the air conditioner and the fan running gear of the air conditioner can be realized.

[0038] Further, after the air conditioner obtains the current operation mode and the fan operation gear of the air conditioner, the target oil return strategy of the air conditioner can be determined in combination with the current operation mode and the fan operation gear of the air conditioner. With this scheme, a more accurate control strategy can be provided for the oil return control of the air conditioner, so that the air conditioner can achieve accurate oil return when the air conditioner controls it to execute the target oil return strategy.

[0039] With the method for controlling oil return of an air conditioner provided in the embodiments of the present disclosure, the current operation mode of the air conditioner and the fan operation gear of the air conditioner are obtained in response to the start-up control instruction of the air conditioner; then the target oil return strategy of the air conditioner is determined according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; and finally the air conditioner is controlled to execute the target oil return strategy. With this scheme, the target oil return strategy of the compressor of the air conditioner can be determined more accurately in combination with the current operation mode of the air conditioner and the fan operation gear of the air conditioner, so that accurate oil return of the compressor of the air conditioner can be achieved when the air conditioner is controlled to execute the target oil return strategy, and the wear of the compressor caused by the lack of oil return can be avoided, thereby improving the user experience and ensuring the performance of the compressor of the air conditioner.

[0040] Figure 2 is a schematic diagram of a method for determining a target oil return strategy provided in the embodiments of the present disclosure; in combination with Figure 2 As shown in FIG. 12, optionally, S12, the air conditioner determines the target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, including:

[0041] S21, in the case where the current operation mode of the air conditioner is the refrigeration mode and the fan operation gear of the air conditioner is the low fan gear, the air conditioner obtains the liquid level information collected by the compressor liquid level sensor.

[0042] S22, in the case where the liquid level information is lower than the first liquid level value for a duration of the first duration, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at the first frequency and continuously operate for the first duration.

[0043] In the scheme, the air conditioner is provided with a compressor liquid level sensor. As an example, the liquid level sensor can be arranged at the bottom end of the side wall of the compressor. A scale capable of measuring the liquid level is further arranged on the liquid level sensor, and the current liquid level collected by the liquid level sensor can be obtained by acquiring the scale value on the scale. Specifically, in the case that the current operation mode of the air conditioner is the cooling mode and the fan operation gear of the air conditioner is the low wind gear, the air conditioner can obtain the liquid level information collected by the compressor liquid level sensor. Here, the liquid level information refers to the current liquid level collected by the liquid level sensor. In this way, accurate acquisition of the liquid level information can be realized. Further, in the case that the liquid level information is lower than the first liquid level value for a first time duration, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at a first frequency and to continue to operate for a first time duration. As an example, if the scale on the liquid level sensor is sequentially decreased from top to bottom, and the middle position is 0 mm, the first liquid level value can be -8 mm, the first time duration can be 1 minute, and the first frequency can be 40 HZ. In this way, in the case that the liquid level information is lower than -8 mm for 1 minute, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 40 HZ and to continue to operate for 1 minute. With this scheme, the air conditioner can be determined to return oil to the compressor according to the low-frequency oil return strategy in combination with the liquid level information obtained by the liquid level sensor, and accurate control of the compressor oil return can be realized.

[0044] Figure 3 is another schematic diagram of a method for determining a target oil return strategy provided by the embodiments of the present disclosure; in combination with Figure 3 As shown in the figure, optionally, S12, the air conditioner determines the target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, including:

[0045] S31, in the case that the current operation mode of the air conditioner is the cooling mode and the fan operation gear of the air conditioner is the high wind gear or the medium wind gear, the air conditioner obtains the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor.

[0046] S32, the air conditioner determines the target oil return strategy of the air conditioner according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor.

[0047] In the scheme, the air conditioner is provided with a compressor liquid level sensor. As an example, the liquid level sensor can be arranged at the bottom end of the side wall of the compressor. A scale capable of measuring the liquid level is further arranged on the liquid level sensor, and the current liquid level collected by the liquid level sensor can be obtained by acquiring the scale value. Specifically, in the case that the current operation mode of the air conditioner is the cooling mode and the fan operating gear of the air conditioner is the high wind gear or the medium wind gear, the air conditioner obtains the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor. Here, the liquid level information refers to the current liquid level collected by the liquid level sensor. The air conditioner can also obtain the ambient temperature of the outdoor where the air conditioner is located through its associated outdoor ambient temperature sensor. With this scheme, the ambient temperature of the outdoor where the air conditioner is located and the liquid level information can be accurately obtained. Further, the air conditioner can determine the target oil return strategy of the air conditioner in combination with the ambient temperature of the outdoor where the air conditioner is located and the liquid level information after obtaining the ambient temperature of the outdoor where the air conditioner is located and the liquid level information. With this scheme, the target oil return strategy can be accurately obtained.

[0048] Optionally, S32, the air conditioner determines the target oil return strategy of the air conditioner according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor, including:

[0049] In the case that the ambient temperature of the outdoor where the air conditioner is located is not higher than the first temperature threshold and the duration of the liquid level information being lower than the first liquid level value is a first duration, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at a first frequency and run for a first duration.

[0050] In the scheme, as an example, the first temperature threshold can be 18℃, the first liquid level value can be -8mm, the first duration can be 1 minute, and the first frequency can be 40HZ. In this way, in the case that the ambient temperature of the outdoor where the air conditioner is located is not higher than 18℃ and the duration of the liquid level information being lower than -8mm is 1 minute, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 40HZ and run for 1 minute. With this scheme, the air conditioner can determine the compressor oil return according to the low frequency oil return strategy in combination with the liquid level information and the ambient temperature of the outdoor where the air conditioner is located, and the precise control of the compressor oil return can be realized.

[0051] Optionally, S32, the air conditioner determines the target oil return strategy of the air conditioner according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor, including:

[0052] In a case where the ambient temperature outside the air conditioner is higher than the first temperature threshold and the liquid level information is lower than the first liquid level value for a first time duration, the air conditioner obtains a current operating frequency of the compressor; in a case where the current operating frequency of the compressor is in a first frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at a second frequency and to continue operating for a first time duration; in a case where the current operating frequency of the compressor is in a second frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at a third frequency and to continue operating for the first time duration; wherein the highest value in the first frequency interval is lower than the lowest value in the second frequency interval, and the second frequency is lower than the third frequency.

[0053] In the scheme, the first temperature threshold can be 18°C, the first liquid level value can be -8 mm, and the first time duration can be 1 minute. In this way, the air conditioner can obtain the current operating frequency of the compressor in a case where the ambient temperature outside the air conditioner is higher than 18°C and the liquid level information is lower than -8 mm for 1 minute. With this scheme, the timing for obtaining the operating frequency of the compressor can be determined, and accurate data basis is provided for the judgment of the air conditioner oil return strategy. Therefore, in a case where the current operating frequency of the compressor is in the first frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at a second frequency and to continue operating for a first time duration. As an example, the first frequency interval is 45HZ-60HZ, and the second frequency is 58HZ. In this way, in a case where the current operating frequency of the compressor is 45HZ-60HZ, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 58HZ and to continue operating for 1 minute. With this scheme, the air conditioner can determine the compressor oil return according to the medium-frequency oil return strategy in combination with the liquid level information and the ambient temperature outside the air conditioner, and accurate control of the compressor oil return is achieved. The air conditioner can also determine that the target oil return strategy of the air conditioner is to control the compressor to return oil at a third frequency and to continue operating for the first time duration in a case where the current operating frequency of the compressor is in the second frequency interval. As an example, the second frequency interval is 60HZ-95HZ, and the third frequency is 88HZ. In this way, in a case where the current operating frequency of the compressor is 60HZ-95HZ, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 88HZ and to continue operating for 1 minute. With this scheme, the air conditioner can determine the compressor oil return according to the high-frequency oil return strategy in combination with the liquid level information and the ambient temperature outside the air conditioner, and accurate control of the compressor oil return is achieved.

[0054] Figure 4 is another method for determining a target oil return strategy provided by the embodiments of the present disclosure; in combination with Figure 4 As shown in FIG. 12, optionally, S12, the air conditioner determines the target oil return strategy of the air conditioner according to the current operating mode of the air conditioner and the fan operating gear of the air conditioner, including:

[0055] S41 , when the current operation mode of the air conditioner is the heating mode and the fan operation gear of the air conditioner is the low wind gear, the air conditioner obtains liquid level information collected by the compressor liquid level sensor.

[0056] S42: When the liquid level information is lower than the first liquid level value for a first period of time, the air conditioner determines a target oil return strategy of the air conditioner as controlling the compressor to return oil at a fourth frequency and continuously operate for the first period of time.

[0057] In this solution, the air conditioner is equipped with a compressor liquid level sensor. For example, the liquid level sensor can be located at the bottom of the compressor sidewall. The liquid level sensor is also equipped with a scale capable of measuring the liquid height. By obtaining the scale values ​​on the scale, the current liquid level detected by the liquid level sensor can be determined. Specifically, when the air conditioner is currently operating in heating mode and the fan is operating at low speed, the air conditioner obtains liquid level information collected by the compressor liquid level sensor. Here, the liquid level information refers to the current liquid height detected by the liquid level sensor. This method enables accurate acquisition of liquid level information. Furthermore, if the liquid level information remains below a first level value for a first duration, the air conditioner can determine its target oil return strategy as controlling the compressor to return oil at a second frequency for the first duration. For example, if the scale on the liquid level sensor decreases from top to bottom, with the center position at 0 mm, the first liquid level value can be -8 mm, the first duration can be 1 minute, and the fourth frequency can be 68 Hz. This way, if the liquid level remains below -8mm for one minute, the air conditioner can determine its target oil return strategy: to control the compressor to return oil at 68Hz for one minute. This solution, combined with the liquid level information obtained by the liquid level sensor, determines that the air conditioner will return oil to the compressor using the medium-frequency oil return strategy, achieving precise control of the compressor's oil return.

[0058] Optionally, in S12, the air conditioner determines a target oil return strategy for the air conditioner based on the current operating mode of the air conditioner and the fan operating gear of the air conditioner, including:

[0059] When the current operating mode of the air conditioner is heating mode and the fan operating gear of the air conditioner is high wind gear or medium wind gear, the air conditioner obtains the ambient temperature outside the room where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor; the air conditioner determines the target oil return strategy of the air conditioner based on the ambient temperature outside the room where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor.

[0060] In the scheme, the air conditioner is provided with a compressor liquid level sensor. As an example, the liquid level sensor can be arranged at the bottom end of the side wall of the compressor. A scale capable of measuring the liquid level is further arranged on the liquid level sensor, and the current liquid level collected by the liquid level sensor can be obtained by acquiring the scale value on the scale. Specifically, in the case that the current operation mode of the air conditioner is the heating mode and the fan operating gear of the air conditioner is the high wind gear or the medium wind gear, the air conditioner obtains the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor; here, the liquid level information refers to the current liquid level collected by the liquid level sensor. The air conditioner can also obtain the ambient temperature of the outdoor where the air conditioner is located through its associated outdoor ambient temperature sensor. With this scheme, the ambient temperature of the outdoor where the air conditioner is located and the liquid level information can be accurately obtained. Further, the air conditioner can determine the target oil return strategy of the air conditioner in combination with the ambient temperature of the outdoor where the air conditioner is located and the liquid level information after obtaining the ambient temperature of the outdoor where the air conditioner is located and the liquid level information. With this scheme, the target oil return strategy can be accurately obtained.

[0061] Optionally, the air conditioner determines the target oil return strategy of the air conditioner according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor, comprising:

[0062] In the case that the ambient temperature of the outdoor where the air conditioner is located is higher than the second temperature threshold and the duration of the liquid level information being lower than the first liquid level value is longer than the first duration, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fourth frequency and to run continuously for the first duration.

[0063] In the scheme, as an example, the second temperature threshold can be 0℃, the first liquid level value can be -8mm, the first duration can be 1 minute, and the fourth frequency can be 68HZ. In this way, in the case that the ambient temperature of the outdoor where the air conditioner is located is higher than 0℃ and the duration of the liquid level information being lower than -8mm is longer than 1 minute, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 68HZ and to run continuously for 1 minute. With this scheme, the compressor can be controlled to return oil according to the medium frequency oil return strategy in combination with the liquid level information and the ambient temperature of the outdoor where the air conditioner is located, and the precise control of the compressor oil return can be realized.

[0064] Optionally, the air conditioner determines the target oil return strategy of the air conditioner according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor, comprising:

[0065] In a case where the ambient temperature outside the air conditioner is not higher than the second temperature threshold and the liquid level information is lower than the first liquid level value for a duration of the first duration, the air conditioner obtains the current operating frequency of the compressor; in a case where the current operating frequency of the compressor is in the third frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fourth frequency and to continue operating for the first duration; in a case where the current operating frequency of the compressor is in the fourth frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fifth frequency and to continue operating for the first duration; wherein the highest value in the third frequency interval is lower than the lowest value in the fourth frequency interval, and the fourth frequency is lower than the fifth frequency.

[0066] In the present scheme, the second temperature threshold can be 0°C, the first liquid level value can be -8mm, and the first duration can be 1 minute. In this way, the air conditioner can obtain the current operating frequency of the compressor in a case where the ambient temperature outside the air conditioner is not higher than 0°C and the liquid level information is lower than -8mm for a duration of 1 minute. With this scheme, the timing for obtaining the operating frequency of the compressor can be determined, providing accurate data basis for the judgment of the air conditioner oil return strategy. Thus, in a case where the current operating frequency of the compressor is in the third frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fourth frequency and to continue operating for the first duration. As an example: the third frequency interval is 60HZ-85HZ, and the fourth frequency is 68HZ. In this way, in a case where the current operating frequency of the compressor is in the range of 60HZ-85HZ, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 68HZ and to continue operating for 1 minute. With this scheme, the air conditioner can determine the compressor oil return according to the medium frequency oil return strategy in combination with the liquid level information and the outdoor environment temperature where the air conditioner is located, and achieve accurate control of the compressor oil return. In a case where the current operating frequency of the compressor is in the fourth frequency interval, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fifth frequency and to continue operating for the first duration. As an example: the fourth frequency interval is 85HZ-115HZ, and the fifth frequency is 98HZ. In this way, in a case where the current operating frequency of the compressor is in the range of 85HZ-115HZ, the air conditioner determines that the target oil return strategy of the air conditioner is to control the compressor to return oil at 98HZ and to continue operating for 1 minute. With this scheme, the air conditioner can determine the compressor oil return according to the high frequency oil return strategy in combination with the liquid level information and the outdoor environment temperature where the air conditioner is located, and achieve accurate control of the compressor oil return.

[0067] Figure 5 is a schematic diagram of an apparatus for controlling air conditioner oil return provided by an embodiment of the present disclosure; in combination with the foregoing description Figure 5As shown, the embodiment of the present disclosure provides a device for controlling oil return of an air conditioner, comprising an acquisition module 51, a determination module 52 and a control module 53. The acquisition module 51 is configured to acquire a current operation mode of the air conditioner and a fan operation gear of the air conditioner in response to a start-up control instruction of the air conditioner; the determination module 52 is configured to determine a target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; and the control module 53 is configured to control the air conditioner to execute the target oil return strategy.

[0068] By using the device for controlling oil return of an air conditioner provided by the embodiment of the present disclosure, the current operation mode of the air conditioner and the fan operation gear of the air conditioner are acquired in response to the start-up control instruction of the air conditioner, so as to determine the target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, and then control the air conditioner to execute the target oil return strategy. With this scheme, the target oil return strategy of the air conditioner compressor can be determined more accurately in combination with the current operation mode of the air conditioner and the fan operation gear of the air conditioner, so as to realize accurate oil return of the air conditioner compressor when the air conditioner executes the target oil return strategy, avoid the situation of compressor wear caused by no oil return, improve the user experience, and ensure the performance of the air conditioner compressor.

[0069] Figure 6 is another schematic diagram of a device for controlling oil return of an air conditioner provided by the embodiment of the present disclosure; in combination with Figure 6 As shown, the embodiment of the present disclosure provides a device for controlling oil return of an air conditioner, comprising a processor 100 and a memory 101. Optionally, the device can further comprise a communication interface 102 and a bus 103. The processor 100, the communication interface 102 and the memory 101 can complete mutual communication through the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call the logical instructions in the memory 101 to execute the method for controlling oil return of an air conditioner in the above-mentioned embodiments.

[0070] In addition, the logical instructions in the memory 101 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0071] The memory 101 is a computer readable storage medium, which can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 100 executes the program instructions / modules stored in the memory 101, so as to execute function applications and data processing, that is, implement the method for controlling oil return of an air conditioner in the above-mentioned embodiments.

[0072] The memory 101 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and application programs required by at least one function; and the data storage area can store data created according to use of the terminal device, etc. In addition, the memory 101 can include a high-speed random access memory, and can also include a non-volatile memory.

[0073] The air conditioner provided by the embodiment of the present disclosure comprises the device for controlling oil return of the air conditioner.

[0074] By adopting the air conditioner provided by the embodiment of the present disclosure, the current operation mode of the air conditioner and the fan operation gear of the air conditioner are acquired in response to a start-up control instruction of the air conditioner; and then the target oil return strategy of the air conditioner is determined according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; and then the air conditioner is controlled to execute the target oil return strategy. With this scheme, the target oil return strategy of the compressor of the air conditioner can be determined more accurately in combination with the current operation mode of the air conditioner and the fan operation gear of the air conditioner, so that the accurate oil return of the compressor of the air conditioner is realized in the case of controlling the air conditioner to execute the target oil return strategy, and the wear of the compressor caused by the failure of the compressor to return oil is avoided, thereby improving the user experience and ensuring the performance of the compressor of the air conditioner.

[0075] The embodiment of the present disclosure provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the method for controlling oil return of the air conditioner.

[0076] The embodiment of the present disclosure provides a computer program product, which comprises a computer program stored on a computer readable storage medium, and the computer program comprises program instructions, and when the program instructions are executed by a computer, the computer executes the method for controlling oil return of the air conditioner.

[0077] The computer readable storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0078] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes, or a transitory storage medium.

[0079] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0080] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0081] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.) can be implemented in other manners. For example, the described apparatus embodiments can be implemented only in a form of a logical function, and can be implemented by using a manner such as software (for example, a computer program) or a combination of hardware and software. In some embodiments, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be implemented by using some interfaces, and a mere representative or a logical interface can be a virtual interface. The actual interface can be hardware based, for example, a physical interface, or a software interface, for example, a network interface or a software interface used for implementing a proper application program interface (API). In addition, any two units can be integrated into a single unit, and can be physical or logical.

[0082] The flowcharts and block diagrams in the attached drawings show the possible implementation architectures, functions and operations of the system, method and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks can occur in an order different from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in an order different from that disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by using a dedicated hardware-based system for implementing the specified functions or actions, or can be implemented by using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling oil return of an air conditioner, characterized by, The method comprises the following steps: in response to a start-up control instruction of an air conditioner, obtaining a current operation mode of the air conditioner and a fan operation gear of the air conditioner; determining a target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; controlling the air conditioner to execute the target oil return strategy; determining a target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, comprising: in a case where the current operation mode of the air conditioner is a refrigeration mode and the fan operation gear of the air conditioner is a low wind gear, obtaining liquid level information collected by a compressor liquid level sensor; in a case where the liquid level information is lower than a first liquid level value for a first time duration, controlling the compressor to return oil at a first frequency and run for a first time duration; or, in a case where the current operation mode of the air conditioner is a refrigeration mode and the fan operation gear of the air conditioner is a high wind gear or a medium wind gear, obtaining an ambient temperature outside the air conditioner and the liquid level information collected by the compressor liquid level sensor; determining the target oil return strategy of the air conditioner according to the ambient temperature outside the air conditioner and the liquid level information collected by the compressor liquid level sensor; the determining the target oil return strategy of the air conditioner according to the ambient temperature outside the air conditioner and the liquid level information collected by the compressor liquid level sensor, comprising: in a case where the ambient temperature outside the air conditioner is higher than a first temperature threshold and the liquid level information is lower than a first liquid level value for a first time duration, obtaining a current operation frequency of the compressor; in a case where the current operation frequency of the compressor is in a first frequency interval, determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a second frequency and run for a first time duration; in a case where the current operation frequency of the compressor is in a second frequency interval, determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a third frequency and run for a first time duration; wherein a maximum value in the first frequency interval is lower than a minimum value in the second frequency interval, and the second frequency is lower than the third frequency.

2. The method of claim 1, wherein, the determining the target oil return strategy of the air conditioner according to the ambient temperature outside the air conditioner and the liquid level information collected by the compressor liquid level sensor, comprising: in a case where the ambient temperature outside the air conditioner is not higher than a first temperature threshold and the liquid level information is lower than a first liquid level value for a first time duration, determining that the target oil return strategy of the air conditioner is to control the compressor to return oil at a first frequency and run for a first time duration.

3. The method of claim 1, wherein, The liquid level sensor is arranged at the bottom end of the side wall of the compressor, and the liquid level sensor is provided with a scale capable of measuring liquid information, so as to obtain the liquid level information collected by the liquid level sensor by obtaining the scale value on the scale.

4. The method of claim 1, wherein, The air conditioner is provided with a compressor liquid level sensor, and the determining the target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, comprising: In a case where the current operation mode of the air conditioner is the heating mode and the fan operation gear of the air conditioner is the low wind gear, obtain the liquid level information collected by the compressor liquid level sensor; In a case where the liquid level information is lower than the first liquid level value for a first time duration, determine that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fourth frequency and run for the first time duration; The target oil return strategy of the air conditioner is determined according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, including: In a case where the current operation mode of the air conditioner is the heating mode and the fan operation gear of the air conditioner is the high wind gear or the medium wind gear, obtain the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor; Determine the target oil return strategy of the air conditioner according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor; The target oil return strategy of the air conditioner is determined according to the ambient temperature of the outdoor where the air conditioner is located and the liquid level information collected by the compressor liquid level sensor, including: In a case where the ambient temperature of the outdoor where the air conditioner is located is not higher than the second temperature threshold and the liquid level information is lower than the first liquid level value for a first time duration, obtain the current operation frequency of the compressor; In a case where the current operation frequency of the compressor is in the third frequency interval, determine that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fourth frequency and run for the first time duration; In a case where the current operation frequency of the compressor is in the fourth frequency interval, determine that the target oil return strategy of the air conditioner is to control the compressor to return oil at the fifth frequency and run for the first time duration; Wherein, the highest value in the third frequency interval is lower than the lowest value in the fourth frequency interval, and the fourth frequency is lower than the fifth frequency.

5. A device for controlling oil return of an air conditioner, characterized by, Including: The acquisition module is configured to acquire the current operation mode of the air conditioner and the fan operation gear of the air conditioner in response to the start-up control instruction of the air conditioner; The determination module is configured to determine the target oil return strategy of the air conditioner according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner; The control module is configured to control the air conditioner to execute the target oil return strategy; The target oil return strategy of the air conditioner is determined according to the current operation mode of the air conditioner and the fan operation gear of the air conditioner, including: In a case where the current operation mode of the air conditioner is the heating mode and the fan operation gear of the air conditioner is the low wind gear, obtain the liquid level information collected by the compressor liquid level sensor; in a case where the liquid level information is lower than the first liquid level value for a first time duration, control the compressor to return oil at the first frequency and run for the first time duration; or, In a case where the current operation mode of the air conditioner is the heating mode and the fan operation gear of the air conditioner is the low wind gear, obtain the liquid level information collected by the compressor liquid level sensor; in a case where the liquid level information is lower than the first liquid level value for a first time duration, control the compressor to return oil at the first frequency and run for the first time duration; or, The target oil return strategy of the air conditioner is determined according to an ambient temperature of an outdoor where the air conditioner is located and liquid level information collected by the compressor liquid level sensor, and the target oil return strategy comprises: In a case where the ambient temperature of the outdoor where the air conditioner is located is higher than a first temperature threshold and the liquid level information is lower than a first liquid level value for a duration of a first duration, a current operating frequency of the compressor is obtained; In a case where the current operating frequency of the compressor is in a first frequency interval, the target oil return strategy of the air conditioner is determined as controlling the compressor to perform oil return according to a second frequency and to continuously operate for a first duration; In a case where the current operating frequency of the compressor is in a second frequency interval, the target oil return strategy of the air conditioner is determined as controlling the compressor to perform oil return according to a third frequency and to continuously operate for a first duration; Wherein a maximum value in the first frequency interval is lower than a minimum value in the second frequency interval, and the second frequency is lower than the third frequency.

6. An apparatus for controlling oil return of an air conditioner, comprising a processor and a memory having program instructions stored therein, characterized in that, The processor is configured to execute the method for controlling oil return of an air conditioner when the program instructions are executed.

7. An air conditioner characterized by comprising: The device for controlling oil return of an air conditioner comprises the device according to claim 5 or 6.

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