CN113959067B - Air conditioner compressor control method and device, air conditioner and readable storage medium - Google Patents
Air conditioner compressor control method and device, air conditioner and readable storage medium Download PDFInfo
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- CN113959067B CN113959067B CN202111429735.2A CN202111429735A CN113959067B CN 113959067 B CN113959067 B CN 113959067B CN 202111429735 A CN202111429735 A CN 202111429735A CN 113959067 B CN113959067 B CN 113959067B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides an air conditioner compressor control method, an air conditioner compressor control device, an air conditioner and a readable storage medium, wherein the air conditioner compressor control method comprises the following steps: when the air conditioner is in heating operation, acquiring the exhaust pressure X of a compressor and the ambient temperature T of an indoor unit; when the air conditioner is stopped for n times of abnormal pressure continuously, adjusting the state of the compressor according to the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit; when T is less than T2 and X is less than C, the compressor is further controlled to reduce the frequency to a first limit frequency according to the normal protection condition; when T1 < T2 and C < X < D. Has the advantages that: according to the technical scheme, the running frequency of the air conditioner compressor is controlled by detecting the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit in real time, and the problem that the compressor is damaged due to continuous abnormal trip caused by excessive pressure is avoided, so that the air conditioner can run reliably for a long time, and the comfort of a user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling an air conditioner compressor, an air conditioner and a readable storage medium.
Background
In the use process of the air conditioner, in order to prevent dust from entering the indoor unit, a consumer usually installs a protective cover on the upper side of the air inlet of the indoor unit to prevent dust, and thus, the air inlet of the indoor unit is blocked undoubtedly. In addition, a large amount of dust can also be built up to the filter screen in the indoor set of long-term operation, if clear up in untimely time, also can cause the indoor set air inlet to be obstructed, in case the indoor set air inlet is obstructed, must reduce the heat exchange efficiency of indoor set heat exchanger, influence the travelling comfort of heating then, but also can lead to air conditioner overload operation, the compressor actual operating pressure is too high leads to unusual trip, influence the reliability of compressor, if continuously take place unusual trip not only influence the consumer and use experience, but also can lead to the press to burn out.
Disclosure of Invention
The invention solves the problem that the compressor of the air conditioner is burnt down due to continuous abnormal trip caused by the operation of the compressor under the overload working condition.
In order to solve the above problems, an object of the present invention is to provide a control method of an air conditioner compressor.
A second object of the present invention is to provide an air conditioner compressor control apparatus.
A third object of the present invention is to provide an air conditioner.
It is a fourth object of the present invention to provide a computer-readable storage medium.
In order to achieve the above object, a method for controlling an air conditioner compressor according to an embodiment of a first aspect of the present invention includes:
when an air conditioner is in heating operation, acquiring the exhaust pressure X of a compressor and the ambient temperature T of an indoor unit;
when the air conditioner is stopped for n times of abnormal pressure continuously, adjusting the state of the compressor according to the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit;
when T is less than T2 and X is less than C, the compressor is further controlled to reduce the frequency to a first limit frequency according to the normal protection condition;
when T1 is more than T and less than T2 and C is more than X and less than D, directly controlling the compressor to reduce the frequency to a second limit frequency;
and the second limit frequency is smaller than the first limit frequency, T1 is an overhigh temperature protection threshold, T2 is a limit temperature threshold, C is an overvoltage protection threshold, and D is a limit pressure threshold.
In the air conditioner compressor control method provided by the embodiment of the invention, after the air conditioner is continuously stopped for n times of abnormal pressure, the frequency reduction protection is strengthened in a hierarchical mode according to the exhaust pressure X of the compressor and the ambient temperature T where the indoor unit is located, namely when the exhaust pressure does not reach an overvoltage protection threshold, normal protection frequency reduction is executed in advance, if the exhaust pressure is continuously increased, and when the exhaust pressure is larger than the overvoltage protection threshold, the frequency reduction is further carried out on the basis of the normal protection frequency reduction, so that the continuous abnormal trip of the air conditioner is relieved, and the occurrence of the burning accident of the compressor is avoided.
Further, the pressure abnormal shut down includes:
if X is larger than D, the compressor is controlled to stop.
In the technical scheme, when the exhaust pressure X of the compressor exceeds the limit pressure threshold D, the press can be automatically stopped for protecting the safety of the press, and the press can be automatically started after the exhaust pressure X of the compressor is reduced to a normal interval.
Further, the control method of the air conditioner compressor further comprises the following steps:
before the air conditioner is stopped abnormally for n times continuously, when T is more than T1 and X is more than C, the compressor is further controlled to reduce the frequency to the first limit frequency according to the normal protection condition.
In the technical scheme, before the air conditioner is continuously shut down for n times of abnormal pressure, the air conditioner is controlled to execute normal protection and frequency reduction according to the exhaust pressure X of the compressor, the ambient temperature T of an indoor unit, the exhaust temperature A of the compressor and the coil temperature B of an indoor heat exchanger, so that the problem that the air conditioner is continuously abnormally tripped is relieved, the burning accident of the compressor is avoided, and the safety of the compressor is ensured.
Further, the controlling the compressor to down-convert to the first limit frequency according to the normal protection condition includes:
acquiring the exhaust temperature A of a compressor and the temperature B of an indoor heat exchanger coil;
when A is more than or equal to E, B is more than or equal to F, controlling the compressor to reduce the frequency to a first limit frequency;
wherein E is an exhaust protection threshold and D is a coil protection threshold.
In the technical scheme, when the exhaust temperature A of the compressor exceeds E ℃ and the temperature B of the coil pipe of the indoor heat exchanger exceeds F ℃, the air conditioner is triggered to start to reduce the frequency so as to protect the safety of the compressor.
Further, the control method of the air conditioner compressor further comprises the following steps:
and when T is more than T2 and X is more than D, controlling the compressor to stop.
In the technical scheme, when the exhaust pressure X of the compressor exceeds the limit pressure threshold D, the press can be automatically stopped for protecting the safety of the press, and the press can be automatically started after the exhaust pressure X of the compressor is reduced to a normal interval.
In order to achieve the above object, a control device for an air conditioner compressor according to an embodiment of a second aspect of the present invention includes:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the exhaust pressure X of a compressor of an air conditioner and the ambient temperature T of an indoor unit when the air conditioner operates in a heating mode;
the judging unit is used for judging whether the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit meet preset conditions or not after the air conditioner is continuously stopped for n times of abnormal pressure;
and the control unit is used for adjusting the state of the compressor according to the judgment result of the judgment unit.
Further, the acquiring unit is also used for acquiring the abnormal pressure shutdown times of the compressor.
Further, the control unit is also used for controlling the air conditioner to send out a protection prompt for over-high pressure of the compressor and/or a user repair prompt.
In order to achieve the above object, an embodiment of a third aspect of the present invention provides an air conditioner, which includes an outdoor unit, an indoor unit, and the air conditioner compressor control device, where the air conditioner compressor control device is configured to control the air conditioner compressor to operate according to the air conditioner compressor control method.
To achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium storing a computer program, which when executed, implements the aforementioned air conditioner compressor control method.
Has the beneficial effects that: in the control method of the air conditioner compressor, after the air conditioner is continuously stopped for n times of abnormal pressure, the frequency reduction protection is strengthened in a hierarchical mode according to the exhaust pressure X of the compressor and the ambient temperature T where the indoor unit is located, namely when the exhaust pressure does not reach an overvoltage protection threshold, normal protection frequency reduction is executed in advance, if the exhaust pressure is continuously increased, and when the exhaust pressure is larger than the overvoltage protection threshold, the frequency reduction is further carried out on the basis of the normal protection frequency reduction, so that the continuous abnormal trip of the air conditioner is relieved, and the occurrence of the accident of burning down of the compressor is avoided.
Drawings
Fig. 1 is a flowchart of an air conditioner compressor control method according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, a method for controlling an air conditioner compressor according to an embodiment of the present invention includes the following steps:
s1, during heating operation of the air conditioner, obtaining operation parameters of the air conditioner, wherein the operation parameters comprise compressor exhaust pressure X, ambient temperature T of an indoor unit, compressor exhaust temperature A and indoor heat exchanger coil temperature B.
And S2, judging whether the air conditioner is in abnormal shutdown for n times continuously, if so, entering S3, otherwise, entering S4, and preferably, n =3.
In this embodiment, the abnormal pressure shutdown is that when X > D, the compressor is shut down, D is a limit pressure threshold, preferably, D =4.6Mpa, when the compressor discharge pressure X exceeds the limit pressure threshold D, the compressor is automatically shut down in order to protect the safety of the compressor, and after the compressor discharge pressure X falls to a normal interval, the compressor is automatically opened.
S3, after the air conditioner is stopped for n times of abnormal pressure, adjusting the frequency of the compressor according to the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit, specifically:
when T is less than T2 and X is less than C, the compressor is further controlled to be lowered to the first limit frequency according to the normal protection condition, and the specific control method comprises the following steps:
firstly, judging whether the air conditioner meets the conditions that T is less than T2, X is less than C, T2 is a limit temperature threshold value, C is an overvoltage protection threshold value, and preferably, T2=30 ℃ and C =4.4Mpa;
if so, continuously judging whether the air conditioner meets normal protection conditions or not, wherein the normal protection conditions are; a is more than or equal to E, B and more than or equal to F, preferably, E =100 ℃ and F =59 ℃;
if the air conditioner continuously meets the normal protection condition, controlling the compressor to execute normal protection frequency reduction to a first limit frequency, preferably, the first limit frequency is 30Hz;
in the technical scheme, when the exhaust temperature A of the compressor exceeds 100 ℃ and the temperature B of the coil pipe of the indoor heat exchanger exceeds 59 ℃, the air conditioner is triggered to start frequency reduction, and meanwhile, when the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit are lower, the air conditioner is controlled in advance to execute normal protection frequency reduction, so that the air conditioner is effectively relieved from continuing abnormal trip, the occurrence of the accident of burning out the compressor is avoided, and the safety of the compressor is ensured.
When T1 is more than T and less than T2 and C is more than X and less than D, directly controlling the compressor to reduce the frequency to a second limit frequency, and controlling the compressor to reduce the frequency to the second limit frequency, wherein the second limit frequency is less than the first limit frequency, preferably, the second limit frequency is half of the first limit frequency, T1 is an overhigh temperature protection threshold, D is a limit pressure threshold, preferably, T1=26 ℃, D =4.6MPa, T2=30 ℃, and C =4.4MPa;
in the technical scheme, when the compressor still cannot protect the safety of the compressor enough after executing normal protection frequency reduction to the first limit frequency, in order to avoid burning of the compressor, the compressor can be controlled to further frequency reduction to the second limit frequency, so that the air conditioner is relieved from continuing abnormal trip, and the burning accident of the compressor is avoided.
When T is more than T2 and X is more than D, the compressor is controlled to stop, preferably, D =4.6Mpa and T2=30 ℃;
in the technical scheme, when the control compressor is still insufficient to protect the safety of the compressor after further reducing the frequency to the second limit frequency, the compressor can be controlled to stop to remind a user of repair and not to start in order to avoid burning out of the compressor.
S4, the air conditioner is not stopped abnormally under the pressure for n times continuously, at the moment, when T is larger than T1 and X is larger than C, the compressor is further controlled to be lowered to a first limit frequency according to normal protection conditions, and specifically:
firstly, judging whether the air conditioner meets the conditions that T is more than T1 and X is more than C;
if so, judging whether the air conditioner meets normal protection conditions, wherein the meeting conditions of the normal protection conditions are the same as S3;
and if the first limit frequency is met, controlling the compressor to reduce the frequency to a first limit frequency according to normal protection, wherein the first limit frequency is preferably 30Hz.
According to the control method of the air conditioner compressor, before the air conditioner is continuously shut down for n times of abnormal pressure, the air conditioner is controlled to execute normal protection frequency reduction to a first limit frequency according to the exhaust pressure X of the compressor, the ambient temperature T of an indoor unit, the exhaust temperature A of the compressor and the coil temperature B of an indoor heat exchanger, so that the air conditioner is relieved from continuing abnormal trip, the occurrence of burning accidents of a press is avoided, and the safety of the press is ensured;
if the air conditioner executes normal protection frequency reduction to a first limit frequency, the air conditioner still has abnormal pressure shutdown, and after the air conditioner continuously has n times of abnormal pressure shutdown, the frequency reduction protection is strengthened in a hierarchical mode according to the exhaust pressure X of the compressor and the ambient temperature T where the indoor unit is located, so that the problem that the air conditioner continues to abnormally jump is effectively relieved, the burning accident of the compressor is avoided, and the safety of the compressor is ensured.
Corresponding to the above embodiment, the present invention further provides an air conditioner compressor control device, including:
the air conditioner comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the exhaust pressure X of a compressor of an air conditioner and the ambient temperature T of an indoor unit when the air conditioner is in heating operation;
the judging unit is used for judging whether the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit meet preset conditions or not after the air conditioner is continuously stopped for n times of abnormal pressure;
and the control unit is used for adjusting the state of the compressor according to the judgment result of the judgment unit.
In the present embodiment, the control method of the control unit is as follows:
when T is less than T2 and X is less than C, the compressor is further controlled to be lowered to the first limit frequency according to the normal protection condition, and the specific control method comprises the following steps:
firstly, judging whether the air conditioner meets the conditions that T is less than T2, X is less than C, T2 is a limit temperature threshold value, C is an overvoltage protection threshold value, and preferably, T2=30 ℃ and C =4.4Mpa;
if so, continuously judging whether the air conditioner meets normal protection conditions or not, wherein the normal protection conditions are; a is more than or equal to E, B and more than or equal to F, preferably, E =100 ℃ and F =59 ℃;
if the air conditioner continuously meets the normal protection condition, controlling the compressor to execute normal protection frequency reduction to a first limit frequency, preferably, the first limit frequency is 30Hz;
in the technical scheme, when the exhaust temperature A of the compressor exceeds 100 ℃ and the temperature B of the coil pipe of the indoor heat exchanger exceeds 59 ℃, the air conditioner is triggered to start frequency reduction, and meanwhile, when the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit are lower, the air conditioner is controlled in advance to execute normal protection frequency reduction, so that the air conditioner is effectively relieved from continuing abnormal trip, the occurrence of the accident of burning out the compressor is avoided, and the safety of the compressor is ensured.
When T1 is more than T and less than T2 and C is more than X and less than D, directly controlling the compressor to reduce the frequency to a second limit frequency, and controlling the compressor to reduce the frequency to the second limit frequency, wherein the second limit frequency is less than the first limit frequency, preferably, the second limit frequency is half of the first limit frequency, T1 is an overhigh temperature protection threshold, D is a limit pressure threshold, preferably, T1=26 ℃, D =4.6MPa, T2=30 ℃, and C =4.4MPa;
in the technical scheme, when the compressor still cannot protect the safety of the compressor enough after executing normal protection frequency reduction to the first limit frequency, in order to avoid burning of the compressor, the compressor can be controlled to further frequency reduction to the second limit frequency, so that the air conditioner is relieved from continuing abnormal trip, and the burning accident of the compressor is avoided.
When T is more than T2 and X is more than D, stopping the compressor, preferably, D =4.6Mpa and T2=30 ℃;
in the technical scheme, when the control compressor is still insufficient to protect the safety of the compressor after further reducing the frequency to the second limit frequency, the compressor can be controlled to stop to remind a user of repair and not to start in order to avoid burning out of the compressor.
Further, the obtaining unit is also used for obtaining the abnormal pressure shutdown times of the compressor,
the control unit is also used for controlling the air conditioner to send out a protection prompt for overhigh pressure of the compressor and/or a user repair prompt.
Corresponding to the above embodiment, the present invention further provides an air conditioner, including an outdoor unit, an indoor unit, and the air conditioner compressor control device, where the air conditioner compressor control device is configured to control the air conditioner compressor to operate according to the air conditioner compressor control method, and the specific operation method is as follows:
s1, during heating operation of the air conditioner, obtaining operation parameters of the air conditioner, wherein the operation parameters comprise compressor exhaust pressure X, ambient temperature T of an indoor unit, compressor exhaust temperature A and indoor heat exchanger coil temperature B.
And S2, judging whether the air conditioner is in abnormal shutdown for n times continuously, if so, entering S3, otherwise, entering S4, and preferably, n =3.
In this embodiment, the abnormal pressure shutdown is that when X > D, the compressor is shut down, D is a limit pressure threshold, preferably, D =4.6Mpa, when the compressor discharge pressure X exceeds the limit pressure threshold D, the compressor is automatically shut down in order to protect the safety of the compressor, and after the compressor discharge pressure X falls to a normal interval, the compressor is automatically opened.
S3, after the air conditioner is stopped for n times of abnormal pressure, adjusting the frequency of the compressor according to the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit, specifically:
when T is less than T2 and X is less than C, the compressor is further controlled to be down-converted to the first limit frequency according to the normal protection condition, and the specific control method comprises the following steps:
firstly, judging whether the air conditioner meets the conditions that T is less than T2, X is less than C, T2 is a limit temperature threshold value, C is an overvoltage protection threshold value, and preferably, T2=30 ℃ and C =4.4Mpa;
if so, continuously judging whether the air conditioner meets normal protection conditions or not, wherein the normal protection conditions are; a is not less than E, B is not less than F, preferably, E =100 ℃ and F =59 ℃;
if the air conditioner continuously meets the normal protection condition, controlling the compressor to execute normal protection frequency reduction to a first limit frequency, preferably, the first limit frequency is 30Hz;
in the technical scheme, when the exhaust temperature A of the compressor exceeds 100 ℃ and the temperature B of the coil pipe of the indoor heat exchanger exceeds 59 ℃, the air conditioner is triggered to start frequency reduction, and meanwhile, when the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit are lower, the air conditioner is controlled in advance to execute normal protection frequency reduction, so that the air conditioner is effectively relieved from continuing abnormal trip, the occurrence of burning accidents of the compressor is avoided, and the safety of the compressor is ensured.
When T1 is more than T and less than T2 and C is more than X and less than D, directly controlling the compressor to reduce the frequency to a second limit frequency, and controlling the compressor to reduce the frequency to the second limit frequency, wherein the second limit frequency is less than the first limit frequency, preferably, the second limit frequency is half of the first limit frequency, T1 is an overhigh temperature protection threshold, D is a limit pressure threshold, preferably, T1=26 ℃, D =4.6MPa, T2=30 ℃, and C =4.4MPa;
in the technical scheme, when the compressor still cannot protect the safety of the compressor after executing normal protection and reducing the frequency to the first limit frequency, the compressor can be controlled to further reduce the frequency to the second limit frequency in order to avoid the burning of the compressor, so that the abnormal trip of the air conditioner is relieved, and the burning accident of the compressor is avoided.
When T is more than T2 and X is more than D, stopping the compressor, preferably, D =4.6Mpa and T2=30 ℃;
in the technical scheme, when the control compressor is still insufficient to protect the safety of the compressor after the frequency of the control compressor is further reduced to the second limit frequency, the control compressor can be controlled to stop to remind a user of repairing and not to start in order to avoid burning out of the compressor.
S4, the air conditioner is not stopped abnormally under the pressure for n times continuously, at the moment, when T is larger than T1 and X is larger than C, the compressor is further controlled to be lowered to a first limit frequency according to normal protection conditions, and specifically:
firstly, judging whether the air conditioner meets the conditions that T is more than T1 and X is more than C;
if so, judging whether the air conditioner meets normal protection conditions, wherein the meeting conditions of the normal protection conditions are the same as S3;
and if the first limit frequency is met, controlling the compressor to reduce the frequency to a first limit frequency according to normal protection, wherein the first limit frequency is preferably 30Hz.
According to the control method of the air conditioner compressor, before the air conditioner is continuously shut down for n times of abnormal pressure, the air conditioner is controlled to execute normal protection frequency reduction to a first limit frequency according to the exhaust pressure X of the compressor, the ambient temperature T of an indoor unit, the exhaust temperature A of the compressor and the coil temperature B of an indoor heat exchanger, so that the air conditioner is relieved from continuing abnormal trip, the occurrence of burning accidents of a press is avoided, and the safety of the press is ensured;
if the air conditioner executes normal protection frequency reduction to a first limit frequency, the air conditioner still has abnormal pressure shutdown, and after the air conditioner continuously has n times of abnormal pressure shutdown, the frequency reduction protection is strengthened in a hierarchical mode according to the exhaust pressure X of the compressor and the ambient temperature T where the indoor unit is located, so that the problem that the air conditioner continues to abnormally jump is effectively relieved, the burning accident of the compressor is avoided, and the safety of the compressor is ensured.
In correspondence to the above embodiment, the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed, the method for controlling the air conditioner compressor is implemented, where the method specifically includes:
s1, during heating operation of the air conditioner, obtaining operation parameters of the air conditioner, wherein the operation parameters comprise compressor exhaust pressure X, ambient temperature T of an indoor unit, compressor exhaust temperature A and indoor heat exchanger coil temperature B.
And S2, judging whether the air conditioner is in abnormal shutdown for n times continuously, if so, entering S3, otherwise, entering S4, and preferably, n =3.
In this embodiment, the abnormal pressure shutdown is that when X > D, the compressor is shut down, D is a limit pressure threshold, preferably, D =4.6Mpa, when the compressor discharge pressure X exceeds the limit pressure threshold D, the compressor is automatically shut down in order to protect the safety of the compressor, and after the compressor discharge pressure X falls to a normal interval, the compressor is automatically opened.
S3, after the air conditioner is stopped for n times of abnormal pressure, adjusting the frequency of the compressor according to the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit, specifically:
when T is less than T2 and X is less than C, the compressor is further controlled to be lowered to the first limit frequency according to the normal protection condition, and the specific control method comprises the following steps:
firstly, judging whether the air conditioner meets the conditions that T is less than T2, X is less than C, T2 is a limit temperature threshold value, C is an overvoltage protection threshold value, and preferably, T2=30 ℃ and C =4.4Mpa;
if so, continuously judging whether the air conditioner meets normal protection conditions or not, wherein the normal protection conditions are; a is more than or equal to E, B and more than or equal to F, preferably, E =100 ℃ and F =59 ℃;
if the air conditioner continuously meets the normal protection condition, controlling the compressor to execute normal protection frequency reduction to a first limit frequency, preferably, the first limit frequency is 30Hz;
in the technical scheme, when the exhaust temperature A of the compressor exceeds 100 ℃ and the temperature B of the coil pipe of the indoor heat exchanger exceeds 59 ℃, the air conditioner is triggered to start frequency reduction, and meanwhile, when the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit are lower, the air conditioner is controlled in advance to execute normal protection frequency reduction, so that the air conditioner is effectively relieved from continuing abnormal trip, the occurrence of the accident of burning out the compressor is avoided, and the safety of the compressor is ensured.
When T1 is more than T and less than T2 and C is more than X and less than D, directly controlling the compressor to reduce the frequency to a second limit frequency, and controlling the compressor to reduce the frequency to the second limit frequency, wherein the second limit frequency is less than the first limit frequency, preferably, the second limit frequency is half of the first limit frequency, T1 is an overhigh temperature protection threshold, D is a limit pressure threshold, preferably, T1=26 ℃, D =4.6MPa, T2=30 ℃, and C =4.4MPa;
in the technical scheme, when the compressor still cannot protect the safety of the compressor after executing normal protection and reducing the frequency to the first limit frequency, the compressor can be controlled to further reduce the frequency to the second limit frequency in order to avoid the burning of the compressor, so that the abnormal trip of the air conditioner is relieved, and the burning accident of the compressor is avoided.
When T is more than T2 and X is more than D, stopping the compressor, preferably, D =4.6Mpa and T2=30 ℃;
in the technical scheme, when the control compressor is still insufficient to protect the safety of the compressor after the frequency of the control compressor is further reduced to the second limit frequency, the control compressor can be controlled to stop to remind a user of repairing and not to start in order to avoid burning out of the compressor.
S4, the air conditioner is not stopped abnormally under the pressure for n times continuously, at the moment, when T is larger than T1 and X is larger than C, the compressor is further controlled to be lowered to a first limit frequency according to normal protection conditions, and specifically:
firstly, judging whether the air conditioner meets the conditions that T is more than T1 and X is more than C;
if so, judging whether the air conditioner meets normal protection conditions, wherein the meeting conditions of the normal protection conditions are the same as S3;
and if the first limit frequency is met, controlling the compressor to reduce the frequency to a first limit frequency according to normal protection, wherein the first limit frequency is preferably 30Hz.
According to the control method of the air conditioner compressor, before the air conditioner is continuously shut down for n times of abnormal pressure, the air conditioner is controlled to execute normal protection frequency reduction to a first limit frequency according to the exhaust pressure X of the compressor, the ambient temperature T of an indoor unit, the exhaust temperature A of the compressor and the coil temperature B of an indoor heat exchanger, so that the air conditioner is relieved from continuing abnormal trip, the occurrence of burning accidents of a press is avoided, and the safety of the press is ensured;
if the air conditioner executes normal protection frequency reduction to a first limit frequency, the air conditioner still has abnormal pressure shutdown, and after the air conditioner continuously has n times of abnormal pressure shutdown, the frequency reduction protection is strengthened in a hierarchical mode according to the exhaust pressure X of the compressor and the ambient temperature T where the indoor unit is located, so that the problem that the air conditioner continues to abnormally jump is effectively relieved, the burning accident of the compressor is avoided, and the safety of the compressor is ensured.
It will be understood by those skilled in the art that all or part of the steps of the methods of the embodiments described above may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, including Read-Only Memory (ROM), random Access Memory (RAM), programmable Read-Only Memory (PROM), erasable Programmable Read-Only Memory (EPROM), one-time Programmable Read-Only Memory (OTPROM), electrically Erasable Programmable Read-Only Memory (EEPROM), compact disc-Read-Only Memory (CD-ROM) or other Memory, magnetic disk or any other medium capable of storing data.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. An air conditioner compressor control method is characterized by comprising the following steps:
when the air conditioner is in heating operation, acquiring the exhaust pressure X of a compressor and the ambient temperature T of an indoor unit;
when the air conditioner is continuously stopped for n times due to abnormal pressure, the state of the compressor is adjusted according to the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit, wherein the abnormal pressure stop is that when X is larger than D, the compressor is stopped;
when T is less than T2 and X is less than C, the compressor is further controlled to reduce the frequency to a first limit frequency according to normal protection conditions, wherein the normal protection conditions are; a is more than or equal to E, B is more than or equal to F;
when T1 is more than T and less than T2 and C is more than X and less than D, directly controlling the compressor to reduce the frequency to a second limit frequency;
when the air conditioner is not stopped for n times of abnormal pressure continuously, the air conditioner meets T & gt T1 and X & gt C, the air conditioner meets normal protection conditions, and the compressor is controlled to reduce the frequency to a first limit frequency according to normal protection;
the second limit frequency is smaller than the first limit frequency, T1 is an overhigh temperature protection threshold, T2 is a limit temperature threshold, C is an overvoltage protection threshold, D is a limit pressure threshold, A is the exhaust temperature of the compressor, B is the temperature of the coil of the indoor heat exchanger, E is the exhaust protection threshold, and F is the coil protection threshold.
2. The air conditioner compressor control method as claimed in claim 1, further comprising:
and when T is more than T2 and X is more than D, controlling the compressor to stop.
3. An air conditioner compressor control apparatus configured to control the air conditioner compressor to operate according to the air conditioner compressor control method of any one of claims 1 to 2, the air conditioner compressor control apparatus comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the exhaust pressure X of a compressor and the ambient temperature T of an indoor unit when an air conditioner is in heating operation;
the judging unit is used for judging whether the exhaust pressure X of the compressor and the ambient temperature T of the indoor unit meet preset conditions or not after the air conditioner is continuously stopped for n times of abnormal pressure; and
and the control unit is used for adjusting the state of the compressor according to the judgment result of the judgment unit.
4. The air conditioner compressor control device according to claim 3, wherein said acquisition unit is further configured to acquire the number of abnormal stops of the compressor.
5. The control device of the air conditioner compressor in claim 3, wherein the control unit is also used for controlling the air conditioner to send out the protection prompt of the over-pressure of the compressor and/or the prompt of the user for repair.
6. An air conditioner comprising an outdoor unit, an indoor unit, and the air conditioner compressor control device of any one of claims 3 to 5, wherein the air conditioner compressor control device is configured to control the air conditioner compressor to operate according to the air conditioner compressor control method of any one of claims 1 to 2.
7. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed, implements the air conditioner compressor control method according to any one of claims 1-2.
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| CN115451542A (en) * | 2022-08-08 | 2022-12-09 | 宁波奥克斯电气股份有限公司 | Variable frequency air conditioner system control method and device and variable frequency air conditioner |
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| KR100827875B1 (en) * | 2003-04-30 | 2008-05-07 | 엘지전자 주식회사 | Operation controlling apparatus and its method for outdoor unit |
| JP4840108B2 (en) * | 2006-12-01 | 2011-12-21 | パナソニック株式会社 | Compressor protection control method for air conditioner |
| CN105546753B (en) * | 2016-01-04 | 2018-03-30 | 广东美的暖通设备有限公司 | Control method, device and the air conditioner of air conditioner |
| JP2018204896A (en) * | 2017-06-07 | 2018-12-27 | 三菱重工サーマルシステムズ株式会社 | Control device of multiple air conditioner, multiple air conditioner, control method of multiple air conditioner, and control program of multiple air conditioner |
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| CN113654224A (en) * | 2021-07-26 | 2021-11-16 | 青岛海尔空调器有限总公司 | Frequency control method and device of air conditioner compressor and air conditioner |
| CN113639444B (en) * | 2021-08-24 | 2022-11-04 | 宁波奥克斯电气股份有限公司 | Control method and control device for improving comfort of air conditioner and air conditioner |
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