CN115682291A - Air conditioner, control method thereof, and computer-readable storage medium - Google Patents
Air conditioner, control method thereof, and computer-readable storage medium Download PDFInfo
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- CN115682291A CN115682291A CN202110860127.0A CN202110860127A CN115682291A CN 115682291 A CN115682291 A CN 115682291A CN 202110860127 A CN202110860127 A CN 202110860127A CN 115682291 A CN115682291 A CN 115682291A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: acquiring a first exhaust temperature and a second exhaust temperature; the first exhaust temperature is detected by a first temperature sensor arranged on a compressor of the air conditioner, the second exhaust temperature is detected by a second temperature sensor arranged on an exhaust pipe, and the exhaust pipe is used for communicating an exhaust port of the compressor with a four-way valve or a heat exchanger of the air conditioner; determining whether a refrigerant circulating system of the air conditioner is abnormal or not according to the first exhaust temperature and the second exhaust temperature; and if the refrigerant circulating system is determined to be abnormal, controlling the air conditioner to execute protection operation. The invention also discloses an air conditioner and a computer readable storage medium. The invention aims to improve the accuracy of the abnormity identification of the refrigerant circulating system of the air conditioner so as to improve the timeliness of the abnormity protection of the air conditioning system.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a method for controlling an air conditioner, and a computer readable storage medium.
Background
With the development of economic technology, air conditioners are applied more and more widely. In the use process of the air conditioner, due to the factors such as diversity of applied scenes, irregular installation and the like, the refrigerant circulating system of the air conditioner is easy to have the abnormalities such as leakage, impurities, ice blockage and the like.
At present, an air conditioner generally detects that an exhaust temperature characterization system is abnormal through a temperature sensor arranged on an exhaust pipe of a compressor, executes corresponding protection action when the exhaust temperature is too high, however, because a refrigerant flowing out of the compressor to the exhaust pipe can be continuously reduced along with the heat exchange temperature, the air conditioner is easily missed to report when the system is subjected to abnormal protection based on the detected exhaust temperature, and the air conditioner system cannot be timely subjected to abnormal protection.
Disclosure of Invention
The invention mainly aims to provide a control method of an air conditioner, the air conditioner and a computer readable storage medium, and aims to improve the accuracy of abnormality identification of a refrigerant circulating system of the air conditioner so as to improve the timeliness of abnormality protection of the air conditioner system.
In order to achieve the above object, the present invention provides a method for controlling an air conditioner, comprising the steps of:
acquiring a first exhaust temperature and a second exhaust temperature; the first exhaust temperature is detected by a first temperature sensor arranged on a compressor of the air conditioner, the second exhaust temperature is detected by a second temperature sensor arranged on an exhaust pipe, and the exhaust pipe is used for communicating an exhaust port of the compressor with a four-way valve or a heat exchanger of the air conditioner;
determining whether a refrigerant circulating system of the air conditioner is abnormal or not according to the first exhaust temperature and the second exhaust temperature;
and if the refrigerant circulating system is determined to be abnormal, controlling the air conditioner to execute protection operation.
Optionally, the step of determining whether there is an abnormality in a refrigerant circulation system of the air conditioner according to the first discharge temperature and the second discharge temperature includes:
determining a target exhaust temperature based on the first exhaust temperature and the second exhaust temperature;
when the target exhaust temperature is greater than a set temperature threshold value, determining that the refrigerant circulating system is abnormal;
and when the target exhaust temperature is less than or equal to the set temperature threshold, determining that the refrigerant circulating system is not abnormal.
Optionally, the step of determining a target exhaust temperature based on the first exhaust temperature and the second exhaust temperature comprises:
determining a maximum value of the first exhaust temperature and the second exhaust temperature as the target exhaust temperature.
Optionally, after the step of determining that there is an abnormality in the refrigerant circulation system when the target exhaust temperature is greater than the set temperature threshold, the method further includes:
and if the refrigerant circulating system is determined to be abnormal, determining the protection operation according to the temperature interval of the target exhaust temperature, and executing the step of controlling the air conditioner to execute the protection operation.
Optionally, the step of determining the protection operation according to the temperature interval in which the target exhaust temperature is located includes:
determining that the protection operation includes the compressor shutdown when the target discharge temperature is in a first temperature interval;
determining that the protection operation includes the compressor down-conversion when the target discharge temperature is within a second temperature interval;
the temperature of the first temperature interval is greater than that of the second temperature interval, and the temperature of the second temperature interval is greater than the set temperature threshold.
Optionally, after the step of determining that there is an abnormality in the refrigerant circulation system when the target exhaust temperature is greater than the set temperature threshold, the method further includes:
if the refrigerant circulating system is determined to be abnormal, when the target exhaust temperature is in the second temperature range, if the air conditioner meets a preset condition, the step of determining that the protection operation comprises the step of stopping the compressor is executed; if the air conditioner does not meet the preset condition, executing the step of determining that the protection operation comprises compressor frequency reduction;
the preset condition includes at least one of:
the first exhaust temperature is greater than a preset exhaust temperature;
a temperature difference between the first exhaust temperature and the second exhaust temperature is greater than or equal to a set temperature difference value;
the running current of the compressor is smaller than a set current value.
Optionally, the step of determining that the protection operation comprises a compressor down-conversion comprises:
determining the protection operation includes the compressor down-clocking at a target rate.
Optionally, the control method of the air conditioner further includes: and acquiring the set temperature threshold according to the rotating speed of the outdoor fan and the rotating speed of the motor of the compressor.
Optionally, the first temperature sensor is disposed inside the compressor, at the top of the compressor, or at a preset position of the compressor, where the preset position is a position of the outer side wall of the compressor and aligned with the internal motor of the compressor.
Further, in order to achieve the above object, the present application also proposes an air conditioner including:
a compressor;
a control device, the compressor being connected with the control device, the control device comprising: the control method comprises the steps of realizing the control method of the air conditioner according to any one of the above items when the control program of the air conditioner is executed by the processor.
Further, in order to achieve the above object, the present application also proposes a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements the steps of the control method of the air conditioner as set forth in any one of the above.
The invention provides a control method of an air conditioner, which judges whether a refrigerant circulating system of the air conditioner is abnormal or not based on a first exhaust temperature and a second exhaust temperature, and executes protection operation through the air conditioner when the refrigerant circulating system is abnormal, wherein the exhaust temperature is not detected by a temperature sensor arranged on an exhaust pipe independently, and the exhaust temperature detected by a sensor arranged on a compressor is also increased, so that the heating condition of the compressor can be reflected more accurately as the temperature sensor on the compressor is close to a heating motor, and the abnormality judgment is carried out by combining the first exhaust temperature and the second exhaust temperature, the accuracy of abnormality identification of the refrigerant circulating system of the air conditioner is improved, the missing report is avoided when the system is subjected to abnormality protection, and the timeliness of the abnormality protection of the air conditioning system is improved.
Drawings
FIG. 1 is a schematic diagram of a hardware configuration involved in the operation of an embodiment of the air conditioner of the present invention;
FIG. 2 is a flowchart illustrating an embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 3 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring a first exhaust temperature and a second exhaust temperature; the first exhaust temperature is detected by a first temperature sensor arranged in the compressor of the air conditioner, the second exhaust temperature is detected by a second temperature sensor arranged in an exhaust pipe, and the exhaust pipe is used for communicating an exhaust port of the compressor with a four-way valve or a heat exchanger of the air conditioner; determining whether a refrigerant circulating system of the air conditioner is abnormal or not according to the first exhaust temperature and the second exhaust temperature; and if the refrigerant circulating system is determined to be abnormal, controlling the air conditioner to execute protection operation.
In the prior art, the air conditioner generally detects that the exhaust temperature of the air conditioner represents that the system is abnormal through a temperature sensor arranged on an exhaust pipe of the compressor, and executes corresponding protection action when the exhaust temperature is too high, however, because the refrigerant flowing out of the compressor to the exhaust pipe can be continuously reduced along with the heat exchange temperature, the air conditioner is easily missed to report when the system is subjected to abnormal protection based on the detected exhaust temperature, and the air conditioner system cannot be protected in time.
The invention provides the solution, and aims to improve the accuracy of abnormality identification of the refrigerant circulating system of the air conditioner so as to improve the timeliness of abnormality protection of the air conditioning system.
The embodiment of the invention provides an air conditioner. The air conditioner may be a wall-mounted air conditioner, a cabinet air conditioner, a mobile air conditioner, a window air conditioner, a ceiling air conditioner, etc.
In an embodiment of the present invention, referring to fig. 1, an air conditioner specifically includes a refrigerant circulation system and a control device. The refrigerant circulating system comprises a compressor 1, an indoor heat exchanger, a throttling device and an outdoor heat exchanger which are sequentially connected. Furthermore, the refrigerant circulating system can also comprise a four-way valve, and four interfaces of the four-way valve are respectively connected with the indoor heat exchanger, the outdoor heat exchanger, and an exhaust port and a return air port of the compressor 1. Specifically, the first temperature sensor 2 may be disposed inside the compressor 1, at the top of the compressor 1, or at a preset position of the compressor 1, where the preset position is a position on the outer side wall of the compressor 1 and aligned with an internal motor of the compressor 1.
The compressor 1 is connected to a control device. The compressor 1 can be controlled to stop or to reduce the frequency by the control device.
Specifically, referring to fig. 1, a first temperature sensor 2 may be provided inside the compressor 1, and the first temperature sensor 2 may be used to detect a first discharge temperature of the compressor 1. The first temperature sensor 2 is connected to the control device. The data detected by the first temperature sensor 2 can be acquired by the control device.
Further, referring to fig. 1, an exhaust port of the compressor 1 is communicated with the four-way valve or the above-described heat exchanger through an exhaust pipe. The air conditioner may further include a second temperature sensor 3, and the second temperature sensor 3 is provided at the exhaust pipe. The second temperature sensor 3 may be used to detect a second exhaust gas temperature. The second temperature sensor 3 is connected to the control device. The data detected by the second temperature sensor 3 can be acquired by the control means.
Further, in an embodiment of the present invention, referring to fig. 1, a control apparatus of an air conditioner includes: a processor 1001 (e.g., a CPU), a memory 1002, and a timer 1003. The memory 1002 may be a high-speed RAM memory or a non-volatile memory such as a disk memory. The memory 1002 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a control program of the air conditioner may be included in a memory 1002 as a computer-readable storage medium. In the apparatus shown in fig. 1, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform operations of the relevant steps of the control method of the air conditioner in the following embodiments.
The embodiment of the invention also provides a control method of the air conditioner, which is applied to control the operation of the air conditioner.
Referring to fig. 2, an embodiment of a control method of an air conditioner according to the present application is provided. In this embodiment, the method for controlling an air conditioner includes:
step S10, acquiring a first exhaust temperature and a second exhaust temperature; the first exhaust temperature is detected by a first temperature sensor arranged in the compressor of the air conditioner, the second exhaust temperature is detected by a second temperature sensor arranged in an exhaust pipe, and the exhaust pipe is used for communicating an exhaust port of the compressor with a four-way valve or a heat exchanger of the air conditioner;
after the compressor is started, the data detected by the first temperature sensor and the second temperature sensor can be acquired in real time or at set time intervals to obtain the first exhaust temperature and the second exhaust temperature.
Specifically, the first temperature sensor is arranged inside the compressor, at the top of the compressor or at a preset position of the compressor, wherein the preset position is a position where the outer side wall of the compressor is aligned with an internal motor of the compressor.
Step S20, determining whether a refrigerant circulating system of the air conditioner is abnormal or not according to the first exhaust temperature and the second exhaust temperature;
the refrigerant circulation system has abnormalities, which specifically include refrigerant leakage and/or refrigerant blockage (specifically, blockage caused by ice blockage, water contained in the refrigerant or impurities).
The different first exhaust temperature and the second exhaust temperature correspond to different abnormal judgment results of the refrigerant circulation system.
Specifically, the first exhaust temperature and the second exhaust temperature may be respectively compared with corresponding temperature thresholds or deviations are calculated, whether the refrigerant circulation system of the air conditioner is abnormal is determined based on the obtained results, or the exhaust characteristic temperature of the compressor may be determined by integrating the first exhaust temperature and the second exhaust temperature, and whether the refrigerant circulation system is abnormal is determined based on the determined exhaust characteristic temperature.
And step S30, if the refrigerant circulating system is determined to be abnormal, controlling the air conditioner to execute protection operation.
In the present embodiment, the air conditioner performs the protection operation specifically including controlling the compressor to stop or to run down. Specifically, if the refrigerant circulating system is determined to be abnormal, the interval duration from the starting time of the compressor to the current time when the refrigerant circulating system is determined to be abnormal can be obtained, and if the interval duration is less than or equal to the preset duration, the compressor is controlled to stop; and if the interval duration is longer than the preset duration, controlling the compressor to reduce the frequency.
In other embodiments, in addition to the compressor being down-converted or stopped, the air conditioner may be further protected by controlling other components of the refrigerant cycle system, such as an increase in the opening of the electronic expansion valve, an increase in the speed of the outdoor fan, and the like.
The method for controlling the air conditioner judges whether a refrigerant circulating system of the air conditioner is abnormal or not based on a first exhaust temperature and a second exhaust temperature, and executes protection operation through the air conditioner when the refrigerant circulating system is abnormal, wherein the exhaust temperature is not detected by a temperature sensor arranged on an exhaust pipe independently, and the exhaust temperature detected by a sensor arranged on a compressor is increased, so that the heating condition of the compressor can be reflected more accurately as the temperature sensor on the compressor is close to a heating motor, the abnormality judgment is carried out by combining the first exhaust temperature and the second exhaust temperature, the accuracy of abnormality identification of the refrigerant circulating system of the air conditioner is improved, the missing report is avoided when the system is subjected to abnormality protection, and the timeliness of the abnormality protection of the air conditioner system is improved.
Further, based on the above embodiments, another embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, referring to fig. 3, the step S20 includes:
step S21, determining a target exhaust temperature according to the first exhaust temperature and the second exhaust temperature;
specifically, one of the first exhaust temperature and the second exhaust temperature may be selected as the target exhaust temperature based on an operation characteristic parameter of the air conditioner or a preset rule. In this embodiment, the maximum value of the first exhaust temperature and the second exhaust temperature is determined as the target exhaust temperature, which is advantageous for improving the timeliness of the abnormality protection. In other embodiments, one of the first discharge temperature and the second discharge temperature may be selected as the target discharge temperature based on the continuous operation duration after the compressor is started, for example, if the continuous operation duration is greater than or equal to a preset duration, the second discharge temperature may be used as the target discharge temperature; the continuous operation time length is less than the preset time length, and the first exhaust temperature can be used as the target exhaust temperature.
In addition, the target exhaust temperature can be obtained by integrating the first exhaust temperature and the second exhaust temperature based on the operation characteristic parameters of the air conditioner. For example, the average of the first exhaust gas temperature and the second exhaust gas temperature is taken as the target exhaust gas temperature. Or, the first exhaust temperature and the second exhaust temperature are weighted and averaged according to respective corresponding weight values to obtain the target exhaust temperature, where the weight value may be obtained based on a distance between a position of the second temperature sensor and a motor of the compressor and a current electrode rotation speed of the compressor.
S22, when the target exhaust temperature is greater than a set temperature threshold value, determining that the refrigerant circulating system is abnormal;
and step S23, when the target exhaust temperature is less than or equal to the set temperature threshold, determining that no abnormality exists in the refrigerant circulation system.
The preset temperature threshold may be a default parameter set in advance, or may be a parameter selected from more than one preset temperature threshold based on the actual operation condition of the air conditioner. In this embodiment, in order to make the abnormality recognition result more accurate, the set temperature threshold is obtained from the outdoor fan rotation speed and the motor rotation speed of the compressor. The higher the rotating speed of the outdoor fan is, the smaller the set temperature threshold value is, and the higher the rotating speed of the motor is, the larger the set temperature threshold value is.
When the target exhaust temperature is greater than the set temperature threshold, the target exhaust temperature is considered to be too high and can be caused by the fact that the refrigerant cannot be normally circulated due to refrigerant blockage or the refrigerant is too small in amount due to refrigerant leakage, and the refrigerant circulation system can be considered to be abnormal at the moment; otherwise, the refrigerant circulation system is considered to be normally circulated without abnormality.
In this embodiment, the relationship between the target exhaust temperature determined by the first exhaust temperature and the second exhaust temperature and the set temperature threshold is integrated to determine whether the refrigerant circulation system of the air conditioner is abnormal, and since the target exhaust temperature can accurately reflect the current temperature condition of the exhaust side of the compressor, the problem of overhigh temperature of the exhaust side caused by the abnormal refrigerant circulation can be accurately identified based on the target exhaust temperature, so that protection is performed in time, and the normal operation of the air conditioner is ensured.
In other embodiments, the first exhaust temperature and the second exhaust temperature may be respectively compared with corresponding temperature thresholds, and when the first exhaust temperature is greater than a first preset temperature and the second exhaust temperature is greater than a second preset temperature, it may be determined that the refrigerant circulation system of the air conditioner is abnormal; when the first exhaust temperature is less than or equal to the first preset temperature or the second exhaust temperature is less than or equal to the second preset temperature, the refrigerant circulating system of the air conditioner can be determined to be abnormal.
Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is provided. In this embodiment, referring to fig. 4, after step S22, the method further includes:
step S301, if the refrigerant circulating system is determined to be abnormal, determining the protection operation according to the temperature interval where the target exhaust temperature is located, and executing the step of controlling the air conditioner to execute the protection operation.
And if the temperature intervals of the target exhaust temperature are different, the protection operation is different. Specifically, in the present embodiment, when the target discharge air temperature is in a first temperature zone, it is determined that the protection operation includes the compressor being stopped; determining that the protection operation includes the compressor down-conversion when the target discharge temperature is within a second temperature interval; the temperature of the first temperature interval is greater than that of the second temperature interval, and the temperature of the second temperature interval is greater than the set temperature threshold. The first temperature interval and the second temperature interval can be used for distinguishing the risk of accidents in the current abnormal state of the air conditioner. The compressor is stopped when the target exhaust temperature is too high and the fault risk is high, otherwise, the compressor operates in a frequency reduction mode, and the system is protected while the system operation stability is maintained.
Specifically, the first temperature interval and the second temperature interval may be preset default intervals. In addition, in order to improve the accuracy of system abnormality identification, the first temperature interval and the second temperature interval may be obtained according to the outdoor fan rotation speed and the motor rotation speed of the compressor. The larger the rotating speed of the outdoor fan is, the smaller the critical values of the first temperature interval and the second temperature interval are, and the larger the rotating speed of the motor is, the larger the critical values of the first temperature interval and the second temperature interval are.
Wherein the step of determining that the protection operation comprises a compressor down-conversion comprises: determining the protection operation includes the compressor down-clocking at a target rate. The target speed may be a preset speed or a speed determined according to the actual operation of the air conditioner (e.g., the outdoor ambient temperature and/or the outdoor unit rotation speed)
In other embodiments, besides the compressor is used for reducing the frequency or stopping the compressor, the protection operation of the air conditioner may also be to control the operation of other components in the refrigerant circulation system, such as the opening of the electronic expansion valve is increased, the rotation speed of the outdoor fan is increased, and so on.
When the protection operation is other operations except the compressor shutdown, after the step S30, the step S10 may be executed again, and the number of times that the air-conditioning refrigerant circulation system determines that there is an abnormality after the compressor is started may be counted, based on which, when it is determined that the refrigerant circulation system has an abnormality, if the counted number of times is greater than or equal to a set threshold, the protection operation may be determined as the compressor shutdown; and if the statistical times are less than the set threshold value, determining protection operation according to the temperature interval where the target exhaust temperature is located.
In this embodiment, the protection operation that the air conditioner needs to execute when the system refrigerant circulation is abnormal is obtained based on the temperature interval where the target exhaust temperature is located, so as to ensure the accuracy of the protection operation executed by the air conditioner, and to protect the system and ensure the stable operation of the system.
Further, in this embodiment, if it is determined that the refrigerant circulation system is abnormal, when the target discharge temperature is within the second temperature range, if the air conditioner meets a preset condition, the step of determining that the protection operation includes the shutdown of the compressor is performed; if the air conditioner does not meet the preset condition, executing the step of determining that the protection operation comprises compressor frequency reduction; the preset condition includes at least one of:
the first exhaust temperature is greater than a preset exhaust temperature;
a temperature difference between the first exhaust temperature and the second exhaust temperature is greater than or equal to a set temperature difference value;
the running current of the compressor is smaller than a set current value.
For a specific application, defining TP as a target exhaust temperature, a first exhaust temperature as TP1, a second exhaust temperature as TP2, a preset exhaust temperature as T, a set temperature difference value as Δ T2, an operating current as DL, and a set current value as X, when Tx1 is greater than or equal to TP and less than or equal to Tx2 (i.e., the target exhaust temperature is in a second temperature interval), if TP1 is greater than or equal to T, TP1-TP2 is greater than or equal to Δ T2, and DL is less than X, the compressor can be controlled to stop; when Tx1 is less than or equal to TP and less than or equal to Tx2, if TP1 is less than T, TP1-TP2 is less than delta T2 or DL is more than or equal to X, the compressor can be controlled to operate in a frequency reduction mode. Here, tx1 ranges from 100 ℃ to 105 ℃, tx2 ranges from 110 ℃ to 115 ℃, T ranges from 90 ℃ to 105 ℃, Δ T2 ranges from 10 ℃ or more, and X ranges from 2A to 5A.
When the target exhaust temperature is too high but the risk is not large, if the first exhaust temperature is too high, the temperature difference between the first exhaust temperature and the second exhaust temperature is too large or the running current of the compressor is too small, it can be shown that the accident risk of the system refrigerant circulation system is large under the current abnormality. Based on the above, when the target exhaust temperature is too high, if the air conditioner meets at least one preset condition, the occurrence of accidents of an air conditioning system can be avoided by stopping the compressor, and the running safety of the air conditioner is ensured; if the air conditioner does not meet the at least one preset condition, the risk of accidents occurring in the current abnormal state of the air conditioner is considered to be small, and at the moment, the compressor operates in a frequency reduction mode, so that the stability of the operation of the compressor is maintained while the air conditioner is prevented from accidents.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a control program of an air conditioner is stored on the computer-readable storage medium, and when the control program of the air conditioner is executed by a processor, the relevant steps of any embodiment of the above control method of the air conditioner are implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. A control method of an air conditioner is characterized by comprising the following steps:
acquiring a first exhaust temperature and a second exhaust temperature; the first exhaust temperature is detected by a first temperature sensor arranged on a compressor of the air conditioner, the second exhaust temperature is detected by a second temperature sensor arranged on an exhaust pipe, and the exhaust pipe is used for communicating an exhaust port of the compressor with a four-way valve or a heat exchanger of the air conditioner;
determining whether a refrigerant circulating system of the air conditioner is abnormal or not according to the first exhaust temperature and the second exhaust temperature;
and if the refrigerant circulating system is determined to be abnormal, controlling the air conditioner to execute protection operation.
2. The method as claimed in claim 1, wherein the step of determining whether there is an abnormality in a refrigerant circulation system of the air conditioner based on the first discharge temperature and the second discharge temperature comprises:
determining a target exhaust temperature based on the first exhaust temperature and the second exhaust temperature;
when the target exhaust temperature is greater than a set temperature threshold value, determining that the refrigerant circulating system is abnormal;
and when the target exhaust temperature is less than or equal to the set temperature threshold, determining that the refrigerant circulation system is not abnormal.
3. The control method of an air conditioner according to claim 2, wherein the step of determining a target discharge air temperature based on the first discharge air temperature and the second discharge air temperature includes:
determining a maximum value of the first exhaust temperature and the second exhaust temperature as the target exhaust temperature.
4. The method as claimed in claim 2, further comprising, after the step of determining that there is an abnormality in the refrigerant circulation system when the target discharge air temperature is greater than a set temperature threshold value:
and if the refrigerant circulating system is determined to be abnormal, determining the protection operation according to the temperature interval of the target exhaust temperature, and executing the step of controlling the air conditioner to execute the protection operation.
5. The control method of an air conditioner according to claim 4, wherein the step of determining the protection operation according to the temperature zone in which the target discharge air temperature is located includes:
determining that the protection operation includes the compressor shutdown when the target discharge temperature is in a first temperature interval;
determining that the protection operation includes the compressor down-conversion when the target discharge temperature is within a second temperature interval;
the temperature of the first temperature interval is greater than that of the second temperature interval, and the temperature of the second temperature interval is greater than the set temperature threshold.
6. The method as claimed in claim 5, wherein after the step of determining that there is an abnormality in the refrigerant circulation system when the target discharge temperature is greater than a set temperature threshold, the method further comprises:
if the refrigerant circulating system is determined to be abnormal, when the target exhaust temperature is in the second temperature range, if the air conditioner meets preset conditions, the step of determining that the protection operation comprises the step of stopping the compressor is executed; if the air conditioner does not meet the preset condition, executing the step of determining that the protection operation comprises compressor frequency reduction;
the preset condition includes at least one of:
the first exhaust temperature is greater than a preset exhaust temperature;
a temperature difference between the first exhaust temperature and the second exhaust temperature is greater than or equal to a set temperature difference value;
the running current of the compressor is smaller than a set current value.
7. The control method of an air conditioner as claimed in claim 5, wherein the step of determining the protection operation includes down-converting the compressor includes:
determining the protection operation includes the compressor down-clocking at a target rate.
8. The control method of an air conditioner according to any one of claims 2 to 7, further comprising: and acquiring the set temperature threshold according to the rotating speed of the outdoor fan and the rotating speed of the motor of the compressor.
9. The method as claimed in any one of claims 1 to 7, wherein the first temperature sensor is disposed inside the compressor, at a top of the compressor, or at a predetermined position of the compressor, the predetermined position being a position of an outer sidewall of the compressor and aligned with an internal motor of the compressor.
10. An air conditioner, characterized in that the air conditioner comprises:
a compressor;
a control device, the compressor being connected with the control device, the control device comprising: a memory, a processor and a control program of an air conditioner stored on the memory and executable on the processor, the control program of the air conditioner implementing the steps of the control method of the air conditioner as claimed in any one of claims 1 to 9 when executed by the processor.
11. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor, implements the steps of the control method of an air conditioner according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860127.0A CN115682291A (en) | 2021-07-28 | 2021-07-28 | Air conditioner, control method thereof, and computer-readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860127.0A CN115682291A (en) | 2021-07-28 | 2021-07-28 | Air conditioner, control method thereof, and computer-readable storage medium |
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