CN115164354B - Down-conversion protection control method and device, air conditioner and storage medium - Google Patents
Down-conversion protection control method and device, air conditioner and storage medium Download PDFInfo
- Publication number
- CN115164354B CN115164354B CN202210805132.6A CN202210805132A CN115164354B CN 115164354 B CN115164354 B CN 115164354B CN 202210805132 A CN202210805132 A CN 202210805132A CN 115164354 B CN115164354 B CN 115164354B
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- frequency
- compressor
- temperature
- protection mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
-
- 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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
-
- 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
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a down-conversion protection control method, a down-conversion protection control device, an air conditioner and a storage medium, wherein the down-conversion protection control method comprises the following steps: s1: the compressor operates in a frequency-lifting manner according to a conventional frequency-lifting protection mechanism under a first trigger condition; s2: restarting the air conditioner after stopping the air conditioner for N times continuously and reporting pressure abnormality; s3: judging whether all the components of the first triggering condition are eliminated; s4: if yes, returning to the step S1; if not, executing the step S5; s5: the compressor is operated in an up-and-down mode according to the corrected down-conversion protection mechanism, and returns to step S3, wherein the corrected down-conversion protection mechanism is used for correcting the component elements for eliminating the first trigger condition. By the method, the device, the air conditioner and the storage medium for controlling the down-conversion protection, the down-conversion operation of the air conditioner can be fully considered, down-conversion protection can be locked in time when the air conditioner is under overpressure, the air conditioner is prevented from continuously over-loading and tripping, and the stability and the reliability of the air conditioner are improved.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a down-conversion protection control method and device, an air conditioner and a storage medium.
Background
The existing air conditioner operates in a closed environment throughout the year, and fine dust and dirt are accumulated on an air conditioner filter screen, so that the operation effect of the air conditioner can be affected, and the stability and reliability of the air conditioner can be affected. Especially under the high-frequency operation working condition of the air conditioner, dust and dirt on the filter screen of the air conditioner are difficult to clean in time in practical application, so that the operation effect of the air conditioner can be extremely poor, and the protective shutdown of the air conditioner can be caused at the moment, and the module protection is reported.
Disclosure of Invention
In view of this, the technical problems to be solved by the present invention are: the first aspect is to provide a control method for frequency-reducing protection, so that the frequency-reducing operation of the air conditioner can fully consider user comfort, and the frequency-reducing protection can be locked in time when the air conditioner is under overpressure, thereby preventing the air conditioner from continuous overload tripping and improving the stability and reliability of the air conditioner.
In order to solve the technical problem of the first aspect, the present invention provides a method for controlling frequency-reducing protection, which includes the following steps:
s1: the compressor operates in a frequency-lifting manner according to a conventional frequency-lifting protection mechanism under a first trigger condition;
s2: restarting the air conditioner after stopping the air conditioner for N times continuously and reporting pressure abnormality;
s3: judging whether all the components of the first triggering condition are eliminated;
s4: if yes, returning to the step S1; if not, executing the step S5;
s5: the compressor is operated in an up-and-down mode according to the corrected down-conversion protection mechanism, and returns to step S3, wherein the corrected down-conversion protection mechanism is used for correcting the component elements for eliminating the first trigger condition.
By the frequency-reducing protection control method, the frequency-reducing operation of the air conditioner can be fully considered for user comfort, and the frequency-reducing protection can be locked in time when the air conditioner is under the overpressure condition, so that the compressor can not operate for a long time under the high-frequency working condition, the continuous overload tripping of the air conditioner is prevented, and the stability and the reliability of the air conditioner are improved.
Preferably, in the cooling mode of the air conditioner, the step S1 includes the following specific steps:
s11: judging whether T is more than or equal to T1 and X is more than or equal to C is met, wherein T is the inner ring temperature, T1 is a first preset temperature value, X is the exhaust pressure of the compressor, and C is a first preset pressure value;
s12: if yes, the first trigger condition is satisfied, and step S13 is executed; if not, returning to the step S11;
s13: the compressor operates at an elevated frequency in accordance with conventional frequency-reducing protection mechanisms.
In the invention, an activation triggering condition of a conventional down-conversion protection mechanism is set, namely, a first triggering condition is as follows: t is greater than or equal to T1 and X is greater than or equal to C, wherein T is greater than or equal to T1 represents that the refrigerating mode of the air conditioner operates under a relatively severe working condition, X is greater than or equal to C represents that the exhaust pressure of the compressor is about to break through the first preset height of the reliability of the compressor, and further the judgment of the combination of T and X is sufficient to ensure the timely activation of a conventional frequency-reducing protection mechanism, and the effective introduction and connection of the correction type frequency-reducing protection mechanism can be fully considered under the objective reality of an air conditioner filter screen.
Preferably, the conventional down-conversion protection mechanism in step S13 includes the following specific steps:
s131: judging whether the temperature of the coil pipe of the compressor is more than or equal to the coil pipe triggering frequency reduction temperature J;
s132: if yes, the compressor is protected by unidirectional frequency reduction and is reduced to a first lower limit frequency f1 at most; if not, executing step S135;
s133: judging whether the temperature of the coil pipe of the compressor is more than or equal to the protection shutdown temperature B;
s134: if yes, restarting the air conditioner after stopping the air conditioner and reporting the pressure abnormality, and returning to the step S131; if not, directly returning to the step S131;
s135: the compressor is bi-directionally up-down frequency controlled according to the conventional temperature control and returns to step S131.
Under the activation operation of the conventional frequency-reducing protection mechanism, the compressor can normally make switching fluctuation between the bidirectional frequency-reducing protection under the conventional temperature control and the unidirectional frequency-reducing protection, and as to whether the compressor really needs to be switched from the bidirectional frequency-reducing protection under the conventional temperature control to the unidirectional frequency-reducing protection, the temperature of the coil pipe of the compressor still needs to be determined through further judgment. In the continuous process of unidirectional frequency-reducing protection, the compressor can be reduced to a first lower limit frequency f1 (for example, 30 Hz) at most, so that the temperature-reducing hysteresis of the temperature of the coil pipe of the compressor under the unidirectional frequency-reducing protection is fully considered, the comfort of a user is considered to a greater extent, and the relatively stable fluctuation of the frequency of the compressor is facilitated.
Preferably, step S2 comprises the following specific steps, corresponding to the reciprocating cycle of step S13:
s21: calculating the continuous shutdown time M of the air conditioner and reporting the pressure abnormality time M;
s22: judging whether M is more than or equal to N or not;
s23: if yes, judging whether T < T2 is met, wherein T2 is a second preset temperature value greater than T1; if not, returning to the step S21;
s24: if yes, go to step S26; if not, judging whether X is more than or equal to D, wherein D is a maximum preset pressure value larger than C;
s25: if yes, go to step S27; if not, go to step S26;
s26: restarting the air conditioner and turning to the step S3;
s27: the air conditioner is directly stopped for protection, is not started any more, and reminds a user to report repair.
The air conditioner can be restarted after the pressure abnormality is reported by stopping the air conditioner continuously N times, and the steps S3-S5 can be correspondingly executed. Even if the air conditioner is restarted after M is more than or equal to N, the air conditioner needs to be determined by continuing to judge T, X, for example, if T is less than T2, the stability and reliability of the air conditioner can be improved again by introducing a modified down-conversion protection mechanism. Otherwise, if T is more than or equal to T2 and X is more than or equal to D, the air conditioner can be determined to be not necessary for restarting, and correspondingly, the air conditioner can be directly stopped for protection, is not restarted, and reminds a user to report repair.
Preferably, step S21 comprises the following specific steps:
s211: calculating whether M returns to zero according to the judgment result of the step S131;
s212: calculating whether M is progressively increased by 1 according to the judgment result of the step S133;
s213: and calculating the continuous shutdown time M of the air conditioner and reporting the pressure abnormality time M.
The air conditioner can correspondingly execute the steps S3-S5 only after the air conditioner is restarted after the pressure abnormality is reported by N times of continuous shutdown, otherwise, as long as the restorative operation related to the step S135 occurs, namely the air conditioner fails to report the pressure abnormality and restart for N times of continuous shutdown, the air conditioner is considered to be reliable for the conventional down-conversion protection mechanism, and the pressure abnormality number M is reported for the air conditioner after the air conditioner is reset to zero.
Preferably, the modified down-conversion protection mechanism in step S5 includes the following specific steps:
s51: judging whether the temperature of the coil pipe of the compressor is more than or equal to the corrected trigger frequency reduction temperature J ', wherein J' is less than J;
s52: if yes, the compressor is protected by unidirectional frequency reduction and is reduced to a first lower limit frequency f1 at most; if not, executing step S55;
s53: judging whether the temperature of the coil pipe of the compressor is more than or equal to the corrected protection shutdown temperature B ', wherein B' < B;
s54: if yes, go to step S27; if not, returning to the step S51;
s55: the compressor is bi-directionally up-down frequency controlled according to the conventional temperature control and returns to step S51.
Under the modified down-conversion protection mechanism, the compressor still can perform switching fluctuation between 'bidirectional up-conversion under normal temperature control' and 'unidirectional down-conversion protection'. However, unlike the conventional frequency-reducing protection mechanism, the frequency-reducing protection mechanism is also interposed earlier because the frequency-reducing temperature J is reduced compared with the frequency-reducing protection mechanism, so that the components of the first trigger condition can be eliminated relatively quickly before the reliability risk of the compressor is increased to the maximum preset height, and the situation that the judgment result in the step S53 is yes is avoided to the greatest extent, so that the frequency-reducing operation of the air conditioner can fully consider the comfort of a user, and the frequency-reducing protection can be locked in time when the air conditioner is under the overpressure condition, so that the compressor can not operate for a long time under the high-frequency working condition, thereby preventing the air conditioner from continuously over-loading and increasing the stability and reliability of the air conditioner. If the judgment result in the step S53 is yes, it is indicated that the problem of frequent shutdown protection of the air conditioner cannot be effectively solved under the modified down-conversion protection mechanism, and the high probability is no longer the problem of cleanliness of the filter screen of the air conditioner, and the step S27 needs to be executed to remind the user of repair.
Preferably, the step S5 further includes the following specific implementation steps:
s501: when T is less than T2 and C is less than X and less than D, J '= (J-1) DEG C, B' = (B-1) DEG C;
s502: when T1 < T2 and X < C, J '= (J-2) DEG C, B' = (B-2) DEG C.
Under the modified down-conversion protection mechanism, when the severe working condition of the air conditioner is still under the relatively controllable premise, namely T1 is less than T2, the exhaust pressure X of the compressor can be further set in a subdivided mode. When C is less than X, the air conditioner in the step S2 is restarted after the pressure abnormality is reported after the continuous N times of shutdown still caused by the conventional frequency-reducing protection mechanism, so that the cleanliness of the air conditioner filter screen is quite undesirable, and the correction amplitude needs to be properly increased under the correction frequency-reducing protection mechanism; on the contrary, when X is smaller than C, the air conditioner in the step S2 is restarted after the pressure abnormality is reported after the continuous N times of shutdown caused by the conventional frequency-reducing protection mechanism, which indicates that the cleanliness of the air conditioner filter screen is also not ideal, but still relatively controllable, and the correction amplitude can be properly reduced under the correction frequency-reducing protection mechanism.
The technical problems to be solved by the invention are as follows: the second aspect provides a frequency-reducing protection control device, and/or the third aspect provides an air conditioner, and/or the fourth aspect provides a computer readable storage medium, so that the frequency-reducing operation of the air conditioner can not only fully consider user comfort, but also lock the frequency-reducing protection in time when the air conditioner is over-pressurized, prevent the air conditioner from continuous overload tripping, and improve the stability and reliability of the air conditioner.
To solve the above-mentioned second aspect of the present invention, a frequency-reducing protection control device is provided, for executing the method according to any one of the embodiments of the first aspect, where the device includes:
the first judgment and adjustment module: the method is used for enabling the compressor to operate in a frequency-lifting mode according to a conventional frequency-lifting protection mechanism under a first trigger condition;
and (3) a shutdown protection module: the machine is used for stopping the air conditioner, reporting pressure abnormality and restarting;
and a second judgment and adjustment module: after the air conditioner is stopped for N times continuously and the pressure is reported to be abnormal and restarted, the air conditioner is used for judging whether the components of the first trigger condition are eliminated, and if the judging result is negative, the compressor is made to run at an ascending and descending frequency according to the correction type frequency-reducing protection mechanism so as to eliminate the components of the first trigger condition in a correction way.
To solve the above-mentioned technical problem of the third aspect, the present invention provides an air conditioner, which includes a computer readable storage medium storing a computer program and a processor, where the computer program is read and executed by the processor to implement the method according to any embodiment of the first aspect.
To solve the above-mentioned fourth technical problem, the present invention provides a computer readable storage medium, where a computer program is stored, where the computer program is read and executed by a processor, and the method according to any embodiment of the first aspect is implemented.
Compared with the prior art, the down-conversion protection control method, the down-conversion protection control device, the air conditioner and the computer storage medium have the following beneficial effects:
the lifting frequency operation of the air conditioner can be realized fully, the user comfort can be realized, and the lifting frequency protection can be locked in time when the air conditioner is under the overpressure, so that the compressor can not operate for a long time under the high-frequency working condition, the overload tripping of the continuity of the air conditioner is prevented, and the stability and the reliability of the air conditioner are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. Attached at
In the figure:
fig. 1 is a flow chart of a method for controlling down-conversion protection according to embodiment 1 of the present invention.
Detailed Description
In order to make the above objects, technical solutions and advantages of the present invention more comprehensible, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments of the present invention described herein are only some of the embodiments constituting the present invention, which are intended to be illustrative of the present invention and not limiting of the present invention, and the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Example 1
Referring to fig. 1, the invention provides a down-conversion protection control method, which comprises the following steps:
s1: the compressor operates in a frequency-lifting manner according to a conventional frequency-lifting protection mechanism under a first trigger condition;
s2: restarting the air conditioner after stopping the air conditioner for N times continuously and reporting pressure abnormality;
s3: judging whether all the components of the first triggering condition are eliminated;
s4: if yes, returning to the step S1; if not, executing the step S5;
s5: the compressor is operated in an up-and-down mode according to the corrected down-conversion protection mechanism, and returns to step S3, wherein the corrected down-conversion protection mechanism is used for correcting the component elements for eliminating the first trigger condition.
Specifically, in the present invention, the frequency-reducing protection mechanism of the compressor can be divided into two types, namely a conventional frequency-reducing protection mechanism and a modified frequency-reducing protection mechanism. Under the triggering mechanism of the conventional frequency-reducing protection, if the air conditioner continuously stops for N times of pressure abnormality, the conventional frequency-reducing protection mechanism of the compressor is proved to be quite possibly unreliable, and the important reason is that: dust and dirt on an air conditioner filter screen are generally difficult to clean in time in practical application, and further, if the original conventional frequency-reducing protection mechanism is simply relied on, the components of the first trigger condition are difficult to eliminate, or more precisely, before the components of the first trigger condition are eliminated, due to the hysteresis characteristic existing when the conventional frequency-reducing protection mechanism is triggered, the reliability risk of a compressor is increased to the maximum preset height continuously, and then the air conditioner is triggered to report pressure abnormality and restart continuously for the n+1st time.
In the invention, the components of the first triggering condition are removed in a corrective way by introducing a corrective frequency-reducing protection mechanism, which fully considers the objective reality that dust and dirt on an air conditioner filter screen are difficult to clean in time in practical application, so that the components of the first triggering condition can be removed relatively quickly before the reliability risk of the compressor is increased to the maximum preset height, the lifting frequency operation of the air conditioner can fully take account of user comfort, and the frequency-reducing protection can be locked in time when the air conditioner is under overpressure, so that the compressor is ensured not to operate for a long time under the high-frequency working condition, thereby preventing the air conditioner from continuously carrying out overload tripping and improving the stability and reliability of the air conditioner.
Preferably, in the cooling mode of the air conditioner, the step S1 includes the following specific steps:
s11: judging whether T is more than or equal to T1 and X is more than or equal to C is met, wherein T is the inner ring temperature, T1 is a first preset temperature value, X is the exhaust pressure of the compressor, and C is a first preset pressure value;
s12: if yes, the first trigger condition is satisfied, and step S13 is executed; if not, returning to the step S11;
s13: the compressor operates at an elevated frequency in accordance with conventional frequency-reducing protection mechanisms.
Specifically, when the air conditioner is operated with accurate temperature control, the operating frequency of the compressor is adjusted in a lifting manner according to the difference between the inner ring temperature T and the set temperature. When the air conditioner operates under a severe working condition, the operation frequency of the compressor is increased, so that the load of the air conditioner is greatly increased, and the exhaust temperature of the compressor and the exhaust pressure X of the compressor are increased, thereby affecting the use reliability of the air conditioner. During the operation of the air conditioner, assuming that the cleanliness degree and the like of the air conditioner filter screen still basically meet factory standards, after the load of the air conditioner is increased to a certain degree, the frequency of the compressor can be limited to continuously rise through the triggerable activation of the conventional frequency-reducing protection mechanism, and the activation triggering condition of the conventional frequency-reducing protection mechanism is marked as a first triggering condition.
In the invention, the first trigger condition is set as follows: t is greater than or equal to T1 and X is greater than or equal to C, wherein T is greater than or equal to T1 represents that the refrigerating mode of the air conditioner operates under a relatively severe working condition, X is greater than or equal to C represents that the exhaust pressure of the compressor is about to break through the first preset height of the reliability of the compressor, and further the judgment of the combination of T and X is sufficient to ensure the timely activation of a conventional frequency-reducing protection mechanism, and the effective introduction and connection of the correction type frequency-reducing protection mechanism can be fully considered under the objective reality of an air conditioner filter screen. Wherein, there is high positive correlation between the exhaust temperature of the compressor and the exhaust pressure X of the compressor, and one of them is selected; the first preset height is lower than the maximum preset height so as to ensure that a sufficient safety margin is left in the control judgment process of the reliability of the compressor. Of course, under the activation operation of the conventional down-conversion protection mechanism, when the constituent elements of the first trigger condition are eliminated, the activation of the conventional down-conversion protection mechanism is also released, which corresponds to "yes" in step S4, and the process returns to step S1).
Preferably, the conventional down-conversion protection mechanism in step S13 includes the following specific steps:
s131: judging whether the temperature of the coil pipe of the compressor is more than or equal to the coil pipe triggering frequency reduction temperature J;
s132: if yes, the compressor is protected by unidirectional frequency reduction and is reduced to a first lower limit frequency f1 at most; if not, executing step S135;
s133: judging whether the temperature of the coil pipe of the compressor is more than or equal to the protection shutdown temperature B;
s134: if yes, restarting the air conditioner after stopping the air conditioner and reporting the pressure abnormality, and returning to the step S131; if not, directly returning to the step S131;
s135: the compressor is bi-directionally up-down frequency controlled according to the conventional temperature control and returns to step S131.
Specifically, under the activation operation of the conventional frequency-reducing protection mechanism, the compressor can normally make switching fluctuation between the bidirectional frequency-reducing protection under the conventional temperature control and the unidirectional frequency-reducing protection, and as to whether the compressor really needs to be switched from the bidirectional frequency-reducing protection under the conventional temperature control to the unidirectional frequency-reducing protection, the temperature of the coil pipe of the compressor still needs to be determined through further judgment. For example, in order to control the reliability risk of the compressor not to climb to a maximum predetermined height, it may be generally set that the compressor discharge temperature cannot exceed a first discharge temperature value (e.g., 100 ℃), and/or that the compressor discharge pressure X cannot exceed a second preset pressure value D (e.g., 4.6 Mpa). Therefore, when the temperature of the coil pipe of the compressor is larger than or equal to the coil pipe triggering frequency-reducing temperature J (for example, 59 ℃), the bidirectional frequency-raising under the conventional temperature control is required to be switched into unidirectional frequency-reducing protection; with the continuous progress of the unidirectional frequency-reducing protection of the compressor, the coil temperature of the compressor is very quickly less than the coil triggering frequency-reducing temperature J, and the compressor is restored to the bidirectional frequency-reducing under the conventional temperature control again.
However, it should be noted that in the continuous process of the unidirectional frequency-reducing protection, the compressor is at most reduced to the first lower limit frequency f1 (for example, 30 Hz), so that the temperature-reducing hysteresis of the temperature of the coil pipe of the compressor under the unidirectional frequency-reducing protection is fully considered, the comfort of a user is considered to a greater extent, and the relatively stable fluctuation of the frequency of the compressor is also facilitated. Of course, under some extreme exceptional conditions or when the cleanliness of the air conditioner filter screen and the like no longer meet factory standards, the reliability risk of controlling the compressor is not increased to the maximum preset height, and thus 100% absolute guarantee is not possible. For example, in the process of unidirectional down-conversion protection of the compressor, the reliability risk of the compressor still has a small probability of continuing to climb to the maximum preset height, and at this time, the method corresponds to: the temperature of the compressor coil is greater than or equal to the protection stop temperature B (for example, 62 ℃), so that the air conditioner needs to be stopped immediately to report pressure abnormality, and then the air conditioner can be restarted.
Preferably, step S2 comprises the following specific steps, corresponding to the reciprocating cycle of step S13:
s21: calculating the continuous shutdown time M of the air conditioner and reporting the pressure abnormality time M;
s22: judging whether M is more than or equal to N or not;
s23: if yes, judging whether T < T2 is met, wherein T2 is a second preset temperature value greater than T1; if not, returning to the step S21;
s24: if yes, go to step S26; if not, judging whether X is more than or equal to D, wherein D is a maximum preset pressure value larger than C;
s25: if yes, go to step S27; if not, go to step S26;
s26: restarting the air conditioner and turning to the step S3;
s27: the air conditioner is directly stopped for protection, is not started any more, and reminds a user to report repair.
Specifically, the air conditioner can be restarted after the pressure abnormality is reported by stopping the air conditioner continuously for N times, and the steps S3-S5 can be correspondingly executed. Even if the condition that M is greater than or equal to N is satisfied, whether the air conditioner needs to be restarted at the moment is determined by continuing to judge T, X, for example, as long as T < T2 is needed, i.e. the running condition of the air conditioner is not bad to uncontrollable steps, at the moment, the discharge pressure X of the compressor is not too high, C < X < D is possible, and X < C is also possible, the structural element of the first triggering condition can be quickly eliminated by introducing a modified down-conversion protection mechanism, and the stability and the reliability of the air conditioner are further improved again. Otherwise, if T is more than or equal to T2 and X is more than or equal to D, the air conditioner is determined to be not necessary for restarting, at the moment, even if a correction type frequency-reducing protection mechanism is introduced barely, the air conditioner can be directly stopped for protection, the air conditioner is not started any more, and a user is reminded of reporting maintenance. Of course, it can be understood by those skilled in the art that T.gtoreq.T2 and C < X < D are difficult to appear under normal conditions, and even if the situation appears, the situation that the cleanliness degree of the air conditioner filter screen does not seriously affect the conventional frequency-reducing protection mechanism to an unreliable degree can be only described, and at the moment, the operation condition of the air conditioner is quite bad, namely the indoor environment temperature T is quite high, and at the moment, the stability and the reliability of the air conditioner can be still attempted to be improved by introducing the correction type frequency-reducing protection mechanism.
Preferably, step S21 comprises the following specific steps:
s211: calculating whether M returns to zero according to the judgment result of the step S131;
s212: calculating whether M is progressively increased by 1 according to the judgment result of the step S133;
s213: and calculating the continuous shutdown time M of the air conditioner and reporting the pressure abnormality time M.
Specifically, the air conditioner can be restarted after the pressure abnormality is reported by continuously stopping for N times, and then the steps S3-S5 can be correspondingly executed, otherwise, as long as the restorative operation related to the step S135 occurs in the air conditioner, that is, the air conditioner fails to continuously stop for N times and report the pressure abnormality and is restarted, the air conditioner is considered to be reliable for the conventional down-conversion protection mechanism, and at the moment, the number of times of continuously stopping and reporting the pressure abnormality for the air conditioner is M, and the progressive calculation is restarted after the return to zero.
Preferably, the modified down-conversion protection mechanism in step S5 includes the following specific steps:
s51: judging whether the temperature of the coil pipe of the compressor is more than or equal to the corrected trigger frequency reduction temperature J ', wherein J' is less than J;
s52: if yes, the compressor is protected by unidirectional frequency reduction and is reduced to a first lower limit frequency f1 at most; if not, executing step S55;
s53: judging whether the temperature of the coil pipe of the compressor is more than or equal to the corrected protection shutdown temperature B ', wherein B' < B;
s54: if yes, go to step S27; if not, returning to the step S51;
s55: the compressor is bi-directionally up-down frequency controlled according to the conventional temperature control and returns to step S51.
Specifically, under the modified down-conversion protection mechanism, the compressor still normally performs switching fluctuation between the bidirectional down-conversion protection under the conventional temperature control and the unidirectional down-conversion protection, and as to whether the compressor really needs to be switched from the bidirectional down-conversion protection under the conventional temperature control to the unidirectional down-conversion protection, the temperature of the coil pipe of the compressor still needs to be determined through further judgment. However, unlike the conventional frequency-reducing protection mechanism, the frequency-reducing protection mechanism is also interposed earlier because the frequency-reducing temperature J is reduced compared with the frequency-reducing protection mechanism, so that the components of the first trigger condition can be eliminated relatively quickly before the reliability risk of the compressor is increased to the maximum preset height, and the situation that the judgment result in the step S53 is yes is avoided to the greatest extent, so that the frequency-reducing operation of the air conditioner can fully consider the comfort of a user, and the frequency-reducing protection can be locked in time when the air conditioner is under the overpressure condition, so that the compressor can not operate for a long time under the high-frequency working condition, thereby preventing the air conditioner from continuously over-loading and increasing the stability and reliability of the air conditioner. If the judgment result in the step S53 is yes, it is indicated that the problem of frequent shutdown protection of the air conditioner cannot be effectively solved under the modified down-conversion protection mechanism, and the high probability is no longer the problem of cleanliness of the filter screen of the air conditioner, and the step S27 needs to be executed to remind the user of repair. It will be appreciated by those skilled in the art that since J 'is modified as compared to J, B' is also modified as compared to B.
Preferably, the step S5 further includes the following specific implementation steps:
s501: when T is less than T2 and C is less than X and less than D, J '= (J-1) DEG C, B' = (B-1) DEG C;
s502: when T1 < T2 and X < C, J '= (J-2) DEG C, B' = (B-2) DEG C.
Specifically, after the air conditioner is stopped for N times continuously, reporting pressure abnormality and restarting, when at least one of T is more than or equal to T1 and X is more than or equal to C is still not completely eliminated, the air conditioner can operate the correction type frequency-reducing protection mechanism. Under the modified down-conversion protection mechanism, when the severe working condition of the air conditioner is still under the relatively controllable premise, namely T1 is less than T2, the exhaust pressure X of the compressor can be further set in a subdivided mode. When C is less than X, the air conditioner in the step S2 is restarted after the pressure abnormality is reported after the continuous N times of shutdown still caused by the conventional frequency-reducing protection mechanism, so that the cleanliness of the air conditioner filter screen is quite undesirable, and the correction amplitude needs to be properly increased under the correction frequency-reducing protection mechanism; on the contrary, when X is smaller than C, the air conditioner in the step S2 is restarted after the pressure abnormality is reported after the continuous N times of shutdown caused by the conventional frequency-reducing protection mechanism, which indicates that the cleanliness of the air conditioner filter screen is also not ideal, but still relatively controllable, and the correction amplitude can be properly reduced under the correction frequency-reducing protection mechanism.
As a preferable example of the present invention, t1=26 ℃, t2=30 ℃, c=4.4 Mpa, d=4.4 Mpa. Of course, the above values are only a preferred example, and specifically, an adaptive optimization setting may be made according to the actual performance of the air conditioner and the installation application environment.
Example 2
Referring to fig. 1, the present invention further provides a device for controlling frequency-down protection, for performing the method described in embodiment 1, where the device includes:
the first judgment and adjustment module: the method is used for enabling the compressor to operate in a frequency-lifting mode according to a conventional frequency-lifting protection mechanism under a first trigger condition;
and (3) a shutdown protection module: the machine is used for stopping the air conditioner, reporting pressure abnormality and restarting;
and a second judgment and adjustment module: after the air conditioner is stopped for N times continuously and the pressure is reported to be abnormal and restarted, the air conditioner is used for judging whether the components of the first trigger condition are eliminated, and if the judging result is negative, the compressor is made to run at an ascending and descending frequency according to the correction type frequency-reducing protection mechanism so as to eliminate the components of the first trigger condition in a correction way.
The present invention also provides an air conditioner comprising a computer readable storage medium storing a computer program and a processor, which when read and run by the processor, implements the method as described in embodiment 1.
The present invention also provides a computer readable storage medium storing a computer program which, when read and executed by a processor, implements a method as described in embodiment 1.
Specifically, it will be understood by those skilled in the art that the frequency-reducing protection control device, the air conditioner, and the computer readable storage medium provided in embodiment 2 may be implemented by combining software and hardware as described in embodiment 1. Any of the above-mentioned down-conversion protection control device, air conditioner, and computer readable storage medium, the information interaction and execution process of which can be referred to the description of the down-conversion protection control method in embodiment 1 will not be repeated here.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (5)
1. The down-conversion protection control method is characterized by comprising the following steps of:
s1: the compressor operates in a frequency-lifting manner according to a conventional frequency-lifting protection mechanism under a first trigger condition;
s2: restarting the air conditioner after stopping the air conditioner for N times continuously and reporting pressure abnormality;
s3: judging whether all the components of the first triggering condition are eliminated;
s4: if yes, returning to the step S1; if not, executing the step S5;
s5: the compressor operates in an up-down frequency mode according to a corrected down-frequency protection mechanism, and returns to the step S3, wherein the corrected down-frequency protection mechanism is used for correcting the component elements for eliminating the first trigger condition;
in the cooling mode of the air conditioner, the step S1 includes the following specific steps:
s11: judging whether T is more than or equal to T1 and X is more than or equal to C is met, wherein T is the inner ring temperature, T1 is a first preset temperature value, X is the exhaust pressure of the compressor, and C is a first preset pressure value;
s12: if yes, the first trigger condition is satisfied, and step S13 is executed; if not, returning to the step S11;
s13: the compressor operates in a lifting frequency mode according to a conventional frequency-reducing protection mechanism;
the conventional down-conversion protection mechanism in step S13 includes the following specific steps:
s131: judging whether the temperature of the coil pipe of the compressor is more than or equal to the coil pipe triggering frequency reduction temperature J;
s132: if yes, the compressor is protected by unidirectional frequency reduction and is reduced to a first lower limit frequency f1 at most; if not, executing step S135;
s133: judging whether the temperature of the coil pipe of the compressor is more than or equal to the protection shutdown temperature B;
s134: if yes, restarting the air conditioner after stopping the air conditioner and reporting the pressure abnormality, and returning to the step S131; if not, directly returning to the step S131;
s135: the compressor is bidirectionally increased and decreased according to the conventional temperature control, and returns to the step S131;
corresponding to the reciprocal cycle of step S13, step S2 comprises the following specific steps:
s21: calculating the continuous shutdown time M of the air conditioner and reporting the pressure abnormality time M;
s22: judging whether M is more than or equal to N or not;
s23: if yes, judging whether T < T2 is met, wherein T2 is a second preset temperature value greater than T1; if not, returning to the step S21;
s24: if yes, go to step S26; if not, judging whether X is more than or equal to D, wherein D is a maximum preset pressure value larger than C;
s25: if yes, go to step S27; if not, go to step S26;
s26: restarting the air conditioner and turning to the step S3;
s27: the air conditioner is directly stopped for protection, is not started any more, and reminds a user to report repair;
the modified down-conversion protection mechanism in step S5 includes the following specific steps:
s51: judging whether the temperature of the coil pipe of the compressor is more than or equal to the corrected trigger frequency reduction temperature J ', wherein J' is less than J;
s52: if yes, the compressor is protected by unidirectional frequency reduction and is reduced to a first lower limit frequency f1 at most; if not, executing step S55;
s53: judging whether the temperature of the coil pipe of the compressor is more than or equal to the corrected protection shutdown temperature B ', wherein B' < B;
s54: if yes, go to step S27; if not, returning to the step S51;
s55: the compressor is bidirectionally increased and decreased according to the conventional temperature control, and returns to the step S51;
wherein, when T < T2 and C < X < D, J '= (J-1) DEG C, B' = (B-1) DEG C; when T1 < T2 and X < C, J '= (J-2) DEG C, B' = (B-2) DEG C.
2. The method of controlling frequency-reducing protection according to claim 1, wherein the step S21 comprises the following specific steps:
s211: calculating whether M returns to zero according to the judgment result of the step S131;
s212: calculating whether M is progressively increased by 1 according to the judgment result of the step S133;
s213: and calculating the continuous shutdown time M of the air conditioner and reporting the pressure abnormality time M.
3. A down-conversion protection control device for performing the method of any of claims 1-2, the device comprising:
the first judgment and adjustment module: the method is used for enabling the compressor to operate in a frequency-lifting mode according to a conventional frequency-lifting protection mechanism under a first trigger condition;
and (3) a shutdown protection module: the machine is used for stopping the air conditioner, reporting pressure abnormality and restarting;
and a second judgment and adjustment module: after the air conditioner is stopped for N times continuously and the pressure is reported to be abnormal and restarted, the air conditioner is used for judging whether the components of the first trigger condition are eliminated, and if the judging result is negative, the compressor is made to run at an ascending and descending frequency according to the correction type frequency-reducing protection mechanism so as to eliminate the components of the first trigger condition in a correction way.
4. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program implementing the method of any one of claims 1-2 when read and run by the processor.
5. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when read and run by a processor, implements the method according to any of claims 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210805132.6A CN115164354B (en) | 2022-07-08 | 2022-07-08 | Down-conversion protection control method and device, air conditioner and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210805132.6A CN115164354B (en) | 2022-07-08 | 2022-07-08 | Down-conversion protection control method and device, air conditioner and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115164354A CN115164354A (en) | 2022-10-11 |
| CN115164354B true CN115164354B (en) | 2023-09-22 |
Family
ID=83493542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210805132.6A Active CN115164354B (en) | 2022-07-08 | 2022-07-08 | Down-conversion protection control method and device, air conditioner and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115164354B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163430A (en) * | 2018-08-30 | 2019-01-08 | 珠海格力电器股份有限公司 | Control method for limiting and reducing frequency of compressor and variable frequency air conditioner |
| CN109323383A (en) * | 2018-09-12 | 2019-02-12 | 奥克斯空调股份有限公司 | Convertible frequency air-conditioner is in the control method of special mounting environment, control device and air conditioner |
| WO2019153887A1 (en) * | 2018-02-08 | 2019-08-15 | 珠海格力电器股份有限公司 | Control method and device for air conditioning system and air conditioning system |
| CN111219859A (en) * | 2018-11-23 | 2020-06-02 | 奥克斯空调股份有限公司 | Air conditioner operation frequency protection method and air conditioner |
| CN111649442A (en) * | 2020-06-15 | 2020-09-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN112325458A (en) * | 2020-11-05 | 2021-02-05 | 珠海格力电器股份有限公司 | Air conditioner control method, computer device, and computer-readable storage medium |
| CN112696808A (en) * | 2020-12-28 | 2021-04-23 | 宁波奥克斯电气股份有限公司 | Frequency control method, frequency control device and variable frequency air conditioner |
| CN113028586A (en) * | 2021-03-31 | 2021-06-25 | 四川虹美智能科技有限公司 | Control protection method and system for compressor |
| CN113310186A (en) * | 2021-06-02 | 2021-08-27 | 四川长虹空调有限公司 | Control method for compressor at high temperature of variable frequency air conditioner coil pipe |
| WO2021208605A1 (en) * | 2020-04-13 | 2021-10-21 | 青岛海尔空调电子有限公司 | Method and system for rapid frequency stabilization of inverter air conditioner compressor, and air conditioning device |
| CN113739350A (en) * | 2021-09-23 | 2021-12-03 | 宁波奥克斯电气股份有限公司 | Low-temperature heating frequency conversion control method and device, storage medium and air conditioner |
| CN113739341A (en) * | 2021-09-18 | 2021-12-03 | 宁波奥克斯电气股份有限公司 | Air conditioner comfort control method and device, air conditioner and readable storage medium |
| CN113865062A (en) * | 2021-10-14 | 2021-12-31 | 珠海拓芯科技有限公司 | Control method of variable frequency air conditioner |
| CN113959067A (en) * | 2021-11-29 | 2022-01-21 | 宁波奥克斯电气股份有限公司 | Air conditioner compressor control method and device, air conditioner and readable storage medium |
| CN114234358A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Air conditioner shutdown protection adjusting method and air conditioner |
| CN114396713A (en) * | 2021-12-15 | 2022-04-26 | 青岛海尔空调器有限总公司 | Air conditioner control method, air conditioner, electronic device and storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6917179B2 (en) * | 2001-10-25 | 2005-07-12 | Toyota Jidosha Kabushiki Kaisha | Load driver and control method for safely driving DC load and computer-readable recording medium with program recorded thereon for allowing computer to execute the control |
-
2022
- 2022-07-08 CN CN202210805132.6A patent/CN115164354B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153887A1 (en) * | 2018-02-08 | 2019-08-15 | 珠海格力电器股份有限公司 | Control method and device for air conditioning system and air conditioning system |
| CN109163430A (en) * | 2018-08-30 | 2019-01-08 | 珠海格力电器股份有限公司 | Control method for limiting and reducing frequency of compressor and variable frequency air conditioner |
| CN109323383A (en) * | 2018-09-12 | 2019-02-12 | 奥克斯空调股份有限公司 | Convertible frequency air-conditioner is in the control method of special mounting environment, control device and air conditioner |
| CN111219859A (en) * | 2018-11-23 | 2020-06-02 | 奥克斯空调股份有限公司 | Air conditioner operation frequency protection method and air conditioner |
| WO2021208605A1 (en) * | 2020-04-13 | 2021-10-21 | 青岛海尔空调电子有限公司 | Method and system for rapid frequency stabilization of inverter air conditioner compressor, and air conditioning device |
| CN111649442A (en) * | 2020-06-15 | 2020-09-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN112325458A (en) * | 2020-11-05 | 2021-02-05 | 珠海格力电器股份有限公司 | Air conditioner control method, computer device, and computer-readable storage medium |
| CN112696808A (en) * | 2020-12-28 | 2021-04-23 | 宁波奥克斯电气股份有限公司 | Frequency control method, frequency control device and variable frequency air conditioner |
| CN113028586A (en) * | 2021-03-31 | 2021-06-25 | 四川虹美智能科技有限公司 | Control protection method and system for compressor |
| CN113310186A (en) * | 2021-06-02 | 2021-08-27 | 四川长虹空调有限公司 | Control method for compressor at high temperature of variable frequency air conditioner coil pipe |
| CN113739341A (en) * | 2021-09-18 | 2021-12-03 | 宁波奥克斯电气股份有限公司 | Air conditioner comfort control method and device, air conditioner and readable storage medium |
| CN113739350A (en) * | 2021-09-23 | 2021-12-03 | 宁波奥克斯电气股份有限公司 | Low-temperature heating frequency conversion control method and device, storage medium and air conditioner |
| CN113865062A (en) * | 2021-10-14 | 2021-12-31 | 珠海拓芯科技有限公司 | Control method of variable frequency air conditioner |
| CN113959067A (en) * | 2021-11-29 | 2022-01-21 | 宁波奥克斯电气股份有限公司 | Air conditioner compressor control method and device, air conditioner and readable storage medium |
| CN114396713A (en) * | 2021-12-15 | 2022-04-26 | 青岛海尔空调器有限总公司 | Air conditioner control method, air conditioner, electronic device and storage medium |
| CN114234358A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Air conditioner shutdown protection adjusting method and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115164354A (en) | 2022-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111380185B (en) | Compressor exhaust temperature frequency limiting control method, air conditioner and readable storage medium | |
| WO2020052281A1 (en) | Variable frequency compressor control method and system, and air conditioner | |
| CN109506315A (en) | Air conditioner and control method for preventing compressor from running with liquid | |
| CN115164354B (en) | Down-conversion protection control method and device, air conditioner and storage medium | |
| WO2020103407A1 (en) | Multi-split air conditioning system and start control method therefor | |
| CN110332649B (en) | Heating overload prevention control method and device for air conditioner and air conditioner | |
| CN113865062B (en) | Control method of variable frequency air conditioner | |
| EP3596410B9 (en) | Co2 refrigeration system and control method thereof | |
| CN112503745B (en) | Air conditioner fault tolerance control method and air conditioner | |
| CN111023420A (en) | Compressor quick start control method and device, air conditioner and storage medium | |
| CN110779146B (en) | Air conditioner and electronic expansion valve control method thereof, storage medium and computer equipment | |
| CN111397142B (en) | Control method and device for electronic expansion valve of air conditioner, air conditioner and storage medium | |
| WO2022134871A1 (en) | Air conditioner operation control method and apparatus, and air conditioner and computer-readable storage medium | |
| KR20080065198A (en) | Control method of inverter type air-conditioner for preventing vibration generated by resonance | |
| CN111442481A (en) | Compressor frequency control method and control device of multi-split air conditioner | |
| CN114234358B (en) | Air conditioner shutdown protection adjusting method and air conditioner | |
| CN113958390B (en) | Urea pump pressure building duty ratio self-learning method | |
| CN114659227B (en) | Air conditioner and attenuation compensation control method of water pumping motor thereof | |
| CN114935169A (en) | Air conditioner, control method thereof, and computer-readable storage medium | |
| CN113719987B (en) | Control method and device for electronic expansion valve and air conditioner | |
| CN113915723A (en) | Control method of air conditioner outdoor unit and air conditioner | |
| CN111854034B (en) | Air conditioner control method for preventing four-way valve from being blocked and air conditioner | |
| CN114383258B (en) | Control method of frequency fluctuation of compressor, air conditioner and storage medium | |
| CN115235097B (en) | Air conditioner control method and air conditioner | |
| CN113639398B (en) | Protection method of refrigeration system during abnormal exhaust detection of compressor and air conditioning unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |