CN113701322B - Air conditioner control method, controller, air conditioner and computer readable storage medium - Google Patents
Air conditioner control method, controller, air conditioner and computer readable storage medium Download PDFInfo
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- CN113701322B CN113701322B CN202111027916.2A CN202111027916A CN113701322B CN 113701322 B CN113701322 B CN 113701322B CN 202111027916 A CN202111027916 A CN 202111027916A CN 113701322 B CN113701322 B CN 113701322B
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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
- F24F11/30—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
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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
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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
- F24F2110/12—Temperature of the outside air
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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 control method, a controller, an air conditioner and a computer readable storage medium, comprising the following steps: acquiring the running state of an air conditioner; and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a heavy-load running state, reducing the running frequency of a compressor in the air conditioner. According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner control method, a controller, an air conditioner, and a computer readable storage medium.
Background
At present, for an air conditioner, the condition of shutdown protection such as complete machine overcurrent protection or compressor overcurrent protection possibly occurs during operation, wherein the complete machine overcurrent protection is to respond to shutdown of the compressor for protection when complete machine current exceeds protection shutdown parameters during operation of the air conditioner; the compressor overcurrent protection is to respond to closing the compressor to protect when the current of the compressor is larger than the protection stop parameter in the operation process of the air conditioner. After the air conditioner enters the shutdown protection, when the shutdown time of the air conditioner reaches the shutdown protection time, the air conditioner can be started again.
Therefore, when the air conditioner is in a heavy load state, because the current of the whole machine and the current of the compressor are relatively large, the protection shutdown parameters are easy to be achieved, frequent protection shutdown, restarting and other conditions can occur, and therefore user experience is affected.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an air conditioner control method, a controller, an air conditioner and a computer readable storage medium, which can reduce the frequency of frequent protection shutdown and restarting of the air conditioner in a heavy load state and improve user experience.
In a first aspect, an embodiment of the present invention provides a method for controlling an air conditioner, including:
acquiring the running state of an air conditioner;
and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a heavy-load running state, reducing the running frequency of a compressor in the air conditioner.
The air conditioner control method provided by the embodiment of the invention has at least the following beneficial effects: during operation, the embodiment of the invention can acquire the operation state of the air conditioner, and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in the heavy-load operation state, the operation frequency of the compressor in the air conditioner is reduced in response. According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
According to some embodiments of the invention, the number of over-current protection of the air conditioner in the preset time includes at least one of the following:
the frequency of the over-current protection of the whole air conditioner occurs within a preset time;
the air conditioner generates the times of compressor overcurrent protection in a preset time.
According to some embodiments of the present invention, when the number of times of over-current protection of the air conditioner in a preset time includes the number of times of over-current protection of the air conditioner in a preset time, the over-current protection of the whole machine is determined by:
acquiring the whole machine current of the air conditioner;
and when the whole machine current is larger than or equal to the preset whole machine current, determining that the air conditioner generates whole machine overcurrent protection.
According to some embodiments of the present invention, when the number of times of over-current protection of the air conditioner within a preset time includes the number of times of over-current protection of the air conditioner within the preset time, the over-current protection of the compressor is determined by:
obtaining a compressor current of the compressor;
and when the compressor current is greater than or equal to a preset compressor current, determining that the air conditioner generates compressor overcurrent protection.
According to some embodiments of the invention, the heavy load operating condition is determined by one of the following steps:
acquiring a first outdoor environment temperature under the condition that the air conditioner is in a refrigeration mode, and determining that the air conditioner is in a heavy-load running state when the first outdoor environment temperature is greater than a first preset temperature;
acquiring the temperature of an outdoor coil when the air conditioner is in a refrigeration mode, and determining that the air conditioner is in a heavy-load running state when the temperature of the outdoor coil is greater than a second preset temperature;
acquiring a second outdoor environment temperature under the condition that the air conditioner is in a heating mode, and determining that the air conditioner is in a heavy-load running state when the second outdoor environment temperature is smaller than a third preset temperature;
and under the condition that the air conditioner is in a heating mode, acquiring the temperature of the indoor coil, and determining that the air conditioner is in a heavy-load running state when the temperature of the indoor coil is higher than a fourth preset temperature.
According to some embodiments of the invention, the compressor is provided with a plurality of stages of operation platforms with successively decreasing operation frequencies; the reducing the operation frequency of the compressor in the air conditioner comprises the following steps:
when the current operation platform of the compressor is not the operation platform with the lowest operation frequency, the compressor is controlled to be switched to the next operation platform from the current operation platform, wherein the operation frequency corresponding to the next operation platform is lower than the operation frequency corresponding to the current operation platform.
According to some embodiments of the invention, after the number of times of over-current protection of the air conditioner reaches a preset number of times in a preset time and the air conditioner is in a heavy-load operation state, the method further includes:
and when the current operation platform of the compressor is the operation platform with the lowest operation frequency, controlling the air conditioner to keep an overcurrent protection stop state.
According to some embodiments of the invention, after the acquiring the operation state of the air conditioner, the method further includes:
and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a non-heavy-load running state, controlling the air conditioner to keep an overcurrent protection stop state.
According to some embodiments of the invention, after the controlling the air conditioner to maintain the overcurrent protection shutdown state, the method further includes:
when a starting instruction is acquired, the air conditioner is controlled to release the overcurrent protection stopping state.
In a second aspect, an embodiment of the present invention provides a controller, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to the first aspect described above when executing the computer program.
The controller according to the embodiment of the invention has at least the following beneficial effects: during operation, the embodiment of the invention can acquire the operation state of the air conditioner, and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in the heavy-load operation state, the operation frequency of the compressor in the air conditioner is reduced in response. According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
In a third aspect, an embodiment of the present invention provides an air conditioner, including a controller as described in the second aspect.
The air conditioner provided by the embodiment of the invention has at least the following beneficial effects: during operation, the embodiment of the invention can acquire the operation state of the air conditioner, and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in the heavy-load operation state, the operation frequency of the compressor in the air conditioner is reduced in response. According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for performing a method as described in the first aspect above.
The computer-readable storage medium according to the embodiment of the invention has at least the following advantageous effects: during operation, the embodiment of the invention can acquire the operation state of the air conditioner, and when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in the heavy-load operation state, the operation frequency of the compressor in the air conditioner is reduced in response. According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
Fig. 1 is a schematic diagram of a system architecture platform for performing a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 7 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 8 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 9 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 10 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 11 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 12 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 13 is an overall flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the related art, for an air conditioner, the situation of shutdown protection such as complete machine overcurrent protection or compressor overcurrent protection may occur during operation, wherein the complete machine overcurrent protection is to respond to shutdown of the compressor for protection when complete machine current exceeds a protection shutdown parameter during operation of the air conditioner; the compressor overcurrent protection is to respond to closing the compressor to protect when the current of the compressor is larger than the protection stop parameter in the operation process of the air conditioner. After the air conditioner enters the shutdown protection, when the shutdown time of the air conditioner reaches the shutdown protection time, the air conditioner can be started again.
Therefore, when the air conditioner is in a heavy load state, because the current of the whole machine and the current of the compressor are relatively large, the protection shutdown parameters are easy to be achieved, frequent protection shutdown, restarting and other conditions can occur, and therefore user experience is affected.
Based on the above, the embodiments of the present invention provide a control method of an air conditioner, a controller, an air conditioner, and a computer readable storage medium, where the control method of an air conditioner includes, but is not limited to, the following steps: acquiring the running state of an air conditioner; when the air conditioner is in a heavy-load running state and the overcurrent protection times of the air conditioner in the preset time reach the preset times, the running frequency of the compressor in the air conditioner is reduced.
According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a system architecture platform for executing a control method of an air conditioner according to an embodiment of the present invention.
The system architecture platform 100 of the present embodiment includes one or more processors 110 and a memory 120, and in fig. 1, one processor 110 and one memory 120 are taken as an example.
The processor 110 and the memory 120 may be connected by a bus or otherwise, which is illustrated in FIG. 1 as a bus connection.
Those skilled in the art will appreciate that the device structure shown in fig. 1 is not limiting of the system architecture platform 100 and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
In the system architecture platform 100 shown in fig. 1, the processor 110 may be configured to invoke a control program of an air conditioner stored in the memory 120, thereby implementing a control method of the air conditioner.
Based on the hardware structure of the system architecture platform 100, various embodiments of the control method of the air conditioner of the present invention are presented.
As shown in fig. 2, fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. The control method of the air conditioner according to the embodiment of the invention includes, but is not limited to, step S100 and step S200.
Step S100, acquiring the running state of an air conditioner;
step 200, when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a heavy-load running state, the running frequency of the compressor in the air conditioner is reduced.
Specifically, during operation, the embodiment of the invention can acquire the operation state of the air conditioner, and when the air conditioner is in a heavy-load operation state and the overcurrent protection times in the preset time reach the preset times, the operation frequency of the compressor in the air conditioner is reduced in response. According to the technical scheme of the embodiment of the invention, if the air conditioner is in the frequent overcurrent protection state and the heavy load operation state, the embodiment of the invention can reduce the operation frequency of the compressor, so that after the operation frequency of the compressor is reduced, the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state can be reduced, and the user experience is improved.
The preset time may be manually preset.
The number of times of the preset may be manually preset.
In addition, it should be noted that, in the above heavy duty operation state, in the case that the air conditioner is in the heavy duty operation state, the overall machine parameter of the air conditioner, such as the overall machine current parameter, or the compressor parameter of the air conditioner, such as the compressor current parameter, is higher than the preset normal value.
In addition, it should be noted that, regarding the number of times of over-current protection of the air conditioner in the preset time, the number of times of over-current protection of the air conditioner in the preset time may be included, or the sum of the number of times of over-current protection of the air conditioner in the preset time and the number of times of over-current protection of the air conditioner in the preset time may be included.
Specifically, the embodiment of the invention can determine that the air conditioner is over-current protected through the steps of the method shown in fig. 3 and 4.
As shown in fig. 3, fig. 3 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. When the number of times of over-current protection of the air conditioner in the preset time includes the number of times of over-current protection of the whole machine of the air conditioner in the preset time, the embodiment of the invention can determine that the over-current protection of the whole machine of the air conditioner occurs through step S310 and step S320:
step S310, obtaining the whole machine current of the air conditioner;
step S320, when the whole machine current is greater than or equal to the preset whole machine current, the whole machine overcurrent protection of the air conditioner is determined.
Specifically, detecting the complete machine current of the air conditioner in real time in a preset time, and if the preset complete machine current is smaller than the complete machine current, the embodiment of the invention can consider that the air conditioner generates complete machine overcurrent protection and record the times of the air conditioner generating the complete machine overcurrent protection; in contrast, if the preset complete machine current is greater than or equal to the complete machine current, the embodiment of the invention can consider that the air conditioner does not have complete machine overcurrent protection.
It should be noted that, regarding the preset overall current, the preset overall current may be manually preset.
In addition, as shown in fig. 4, fig. 4 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. When the number of times of over-current protection of the air conditioner in the preset time includes the number of times of over-current protection of the compressor of the air conditioner in the preset time, the embodiment of the invention can determine that the over-current protection of the compressor of the air conditioner occurs through step S410 and step S420:
step S410, obtaining the current of a compressor;
and step S420, when the compressor current is greater than or equal to the preset compressor current, determining that the air conditioner generates compressor overcurrent protection.
Specifically, detecting the compressor current of the air conditioner in real time within a preset time, and if the preset compressor current is smaller than the compressor current, the embodiment of the invention considers that the air conditioner generates the compressor overcurrent protection and records the times of the air conditioner that the air conditioner generates the compressor overcurrent protection; in contrast, if the preset compressor current is greater than or equal to the compressor current, embodiments of the present invention may consider that the air conditioner does not experience compressor over-current protection.
The preset compressor current may be manually preset.
In addition, the embodiment of the present invention can determine that the air conditioner is in the heavy-duty operation state through the steps of the method in fig. 5 to 8.
As shown in fig. 5, fig. 5 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The embodiment of the invention can determine that the air conditioner is in a heavy-load running state through the step S510 and the step S520:
step S510, under the condition that the air conditioner is in a refrigeration mode, acquiring a first outdoor environment temperature;
step S520, when the first outdoor environment temperature is greater than the first preset temperature, determining that the air conditioner is in a heavy-load running state.
Specifically, when the air conditioner is in a refrigerating period, the embodiment of the invention obtains the first outdoor environment temperature, compares the first outdoor environment temperature with the first preset temperature, and finally judges whether the air conditioner is in a heavy-load running state according to a comparison result. When the first preset temperature is less than or equal to the first outdoor environment temperature, the embodiment of the invention can consider that the air conditioner is in a heavy-load running state; when the first preset temperature is greater than the first outdoor ambient temperature, the embodiment of the invention can consider that the air conditioner is in a non-heavy-load running state.
Illustratively, when the first preset temperature is 50 ℃ during the cooling period of the air conditioner, and when the first outdoor ambient temperature is higher than 50 ℃, the embodiment of the present invention considers that the air conditioner is in a heavy-duty operation state; when the first outdoor ambient temperature is less than or equal to 50 ℃, embodiments of the present invention may consider the air conditioner to be in a non-heavy duty operation state.
The first outdoor ambient temperature refers to an outdoor ambient temperature, and the outdoor ambient temperature may be obtained by a temperature sensor.
The first preset temperature may be manually preset.
As shown in fig. 6, fig. 6 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The embodiment of the invention can determine that the air conditioner is in a heavy-load running state through the step S610 and the step S620:
step S610, acquiring the temperature of an outdoor coil when the air conditioner is in a refrigeration mode;
and step S620, when the temperature of the outdoor coil is greater than the second preset temperature, determining that the air conditioner is in a heavy-load running state.
Specifically, when the air conditioner is in a refrigerating period, the embodiment of the invention obtains the temperature of the outdoor coil, compares the temperature of the outdoor coil with the second preset temperature, and finally judges whether the air conditioner is in a heavy-load running state according to the comparison result. When the second preset temperature is less than or equal to the outdoor coil temperature, the embodiment of the invention can consider that the air conditioner is in a heavy-load running state; when the second preset temperature is greater than the outdoor coil temperature, embodiments of the present invention may consider the air conditioner to be in a non-heavy duty operation.
Illustratively, when the second preset temperature is 60 ℃ during cooling of the air conditioner, and when the outdoor coil temperature is higher than 60 ℃, embodiments of the present invention will consider the air conditioner to be in a heavy duty operation; when the outdoor coil temperature is less than or equal to 60 ℃, embodiments of the present invention may consider the air conditioner to be in a non-heavy duty operating state.
The outdoor coil temperature may be obtained by a temperature sensor.
The second preset temperature may be manually preset.
As shown in fig. 7, fig. 7 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The embodiment of the invention can determine that the air conditioner is in a heavy-load running state through the step S710 and the step S720:
step S710, acquiring a second outdoor environment temperature under the condition that the air conditioner is in a heating mode;
and step S720, when the second outdoor environment temperature is smaller than the third preset temperature, determining that the air conditioner is in a heavy-load running state.
Specifically, during heating of the air conditioner, the embodiment of the invention obtains the second outdoor environment temperature, compares the second outdoor environment temperature with the third preset temperature, and finally judges whether the air conditioner is in a heavy-load running state according to a comparison result. When the third preset temperature is greater than the second outdoor environment temperature, the embodiment of the invention can consider that the air conditioner is in a heavy-load running state; when the third preset temperature is less than or equal to the second outdoor ambient temperature, the embodiment of the present invention may consider that the air conditioner is in a non-heavy duty operation state.
Illustratively, when the third preset temperature is 20 ℃ during heating of the air conditioner, and when the second outdoor ambient temperature is lower than 20 ℃, the embodiment of the present invention may consider that the air conditioner is in a heavy-duty operation state; when the second outdoor ambient temperature is greater than or equal to 20 ℃, embodiments of the present invention may consider the air conditioner to be in a non-heavy duty operation state.
The second outdoor ambient temperature refers to an outdoor ambient temperature, and the outdoor ambient temperature may be obtained by a temperature sensor.
The third preset temperature may be manually preset.
As shown in fig. 8, fig. 8 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The embodiment of the invention can determine that the air conditioner is in a heavy-load running state through the step S810 and the step S820:
step S810, acquiring the temperature of an indoor coil pipe under the condition that the air conditioner is in a heating mode;
and step S820, when the temperature of the indoor coil is higher than the fourth preset temperature, determining that the air conditioner is in a heavy-load running state.
Specifically, during heating of the air conditioner, the embodiment of the invention obtains the temperature of the indoor coil, compares the temperature of the indoor coil with the fourth preset temperature, and finally judges whether the air conditioner is in a heavy-load running state according to the comparison result. When the fourth preset temperature is less than or equal to the indoor coil temperature, the embodiment of the invention can consider that the air conditioner is in a heavy-load running state; when the fourth preset temperature is greater than the indoor coil temperature, the embodiment of the invention can consider the air conditioner to be in a non-heavy-duty operation state.
Illustratively, when the fourth preset temperature is 50 ℃ during heating of the air conditioner, and when the indoor coil temperature is higher than 50 ℃, the embodiment of the invention will consider the air conditioner to be in a heavy duty operation state; when the indoor coil temperature is less than or equal to 50 ℃, embodiments of the present invention will consider the air conditioner to be in a non-heavy duty operating condition.
The indoor coil temperature may be obtained by a temperature sensor.
The fourth preset temperature may be manually preset.
In addition, as shown in fig. 9, fig. 9 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The compressor is provided with a multistage operation platform with successively decreasing operation frequencies; regarding the above-described lowering of the operation frequency of the compressor in the air conditioner in step S200, there is included, but not limited to, step S900.
And step 900, when the current operation platform of the compressor is not the operation platform with the lowest operation frequency, controlling the compressor to be switched to the next operation platform from the current operation platform, wherein the operation frequency corresponding to the next operation platform is lower than the operation frequency corresponding to the current operation platform.
Specifically, after the air conditioner is started, the compressor is generally controlled to operate on an operation platform with the highest operation frequency, if the air conditioner is detected to be in a frequent overcurrent protection state and a heavy load operation state during the operation of the operation platform with the highest operation frequency, the compressor is controlled to be switched to an operation platform with a lower operation frequency by the current operation platform with the highest operation frequency, and so on, the operation frequency of the compressor is adjusted step by step, so that the frequency of frequent protection shutdown and restarting of the air conditioner in the heavy load state is reduced.
In addition, as shown in fig. 10, fig. 10 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The compressor is provided with a multistage operation platform with successively decreasing operation frequencies; after the number of times of over-current protection of the air conditioner in the preset time reaches the preset number of times and the air conditioner is in the heavy-load operation state in the above step S200, the control method of the embodiment of the present invention further includes, but is not limited to, step S1000.
And step S1000, when the current operation platform of the compressor is the operation platform with the lowest operation frequency, controlling the air conditioner to keep an overcurrent protection stop state.
Specifically, after the air conditioner is started, the compressor is generally controlled to operate on the operation platform with the highest operation frequency, if the air conditioner is detected to be in the frequent overcurrent protection state and the overload operation state during the operation of the operation platform with the highest operation frequency, the compressor is controlled to be switched to the operation platform with the lower operation frequency by one stage from the operation platform with the highest operation frequency, and so on until the compressor is controlled to be switched to the operation platform with the lowest operation frequency for operation. And if the compressor still detects that the air conditioner is in the frequent overcurrent protection state and the heavy-load operation state during the operation of the operation platform with the lowest operation frequency, controlling the air conditioner to keep the overcurrent protection stop state. Therefore, the embodiment of the invention can reduce the frequency of frequent protection shutdown and restarting of the air conditioner in a heavy load state by adjusting the operation frequency of the compressor step by step.
In addition, as shown in fig. 11, fig. 11 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. After the step S100, the control method according to the embodiment of the present invention further includes, but is not limited to, step S1100.
And step S1100, when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a non-heavy-load running state, controlling the air conditioner to keep the overcurrent protection stop state.
Specifically, during operation, the embodiment of the present invention may acquire an operation state of the air conditioner, and when the number of times of over-current protection of the air conditioner in a preset time reaches a preset number of times but the air conditioner is in a non-heavy load operation state, it indicates that the current air conditioner is in a frequent over-current protection state but is not in a heavy load operation state, and other faults may exist in the current air conditioner to cause the air conditioner to stop, so in this case, the embodiment of the present invention may lock the air conditioner in a stop state.
In addition, as shown in fig. 12, fig. 12 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. After the step S1100, the control method according to the embodiment of the present invention further includes, but is not limited to, step S1200.
And step 1200, when a starting instruction is acquired, controlling the air conditioner to release the overcurrent protection stopping state.
Specifically, when the air conditioner is in a frequent overcurrent protection state but is in a non-heavy-load operation state and the air conditioner is locked in a stop state, unless a start-up instruction is received so that the air conditioner releases the overcurrent protection stop state, the air conditioner is controlled to be always locked in the overcurrent protection stop state.
It should be noted that, regarding the above power-on command, the power-on command may be generated by pressing a power-off key by the remote controller and then pressing the power-on key again, or may be generated by powering on the air conditioner after power-off.
Based on the control method of the air conditioner shown in fig. 2 to 12, an overall embodiment of the control method of the air conditioner of the present invention is presented.
As shown in fig. 13, fig. 13 is an overall flowchart of a control method of an air conditioner according to an embodiment of the present invention. The overall flow includes, but is not limited to, step S1310, step S1320, step C110, step S1330, step C120, step S1340, step S1410, step C210, step S1420, step C220, step S1430, step S1510, step C310, step S1520, step C320, step S1530, step S1610, step C410, step S1620, and step S1630.
Step S1310, powering on the air conditioner;
step S1320, the compressor operates at 100% of the given operating frequency;
step C110, judging whether the air conditioner has N times of complete machine overcurrent protection or compressor overcurrent protection in the T time, if so, executing step S1330, otherwise, returning to continue executing step S1320; in the embodiment of the invention, T can be set to 30 minutes, and N is 3.
Step S1330, judging the current state as the frequent overcurrent protection state;
step C120, judging whether the current running state of the air conditioner is a heavy running state, if so, executing step S1410, otherwise, executing step S1340;
step S1340, the air conditioner is protected to stop and lock unless the remote controller is turned off and then turned on again or is powered on again after being powered off;
step S1410, the compressor operates according to 80% of the given operating frequency;
step C210, judging whether the air conditioner has N times of complete machine overcurrent protection or compressor overcurrent protection in the T time, if so, executing step S1420, otherwise, returning to continue executing step S1410;
step S1420, judging the current state as the frequent overcurrent protection state;
step C220, judging whether the current running state of the air conditioner is a heavy running state, if so, executing step S1510, otherwise, executing step S1430;
step S1430, the air conditioner is protected to stop and lock unless the remote controller is turned off and then turned on again or is powered on again after being powered off;
step S1510, the compressor is operated according to 50% of the given operating frequency;
step C310, judging whether the air conditioner has N times of complete machine overcurrent protection or compressor overcurrent protection in the T time, if so, executing step S1520, otherwise, returning to continue executing step S1510;
step S1520, judging the current state as a frequent overcurrent protection state;
step C320, judging whether the current running state of the air conditioner is a heavy running state, if so, executing step S1610, otherwise, executing step S1530;
step S1530, the air conditioner is protected to stop and lock, unless the remote controller is turned off and then turned on again or is powered on again after being powered off;
step S1610, the compressor operates according to the minimum allowable operating frequency;
step C410, judging whether the air conditioner has N times of complete machine overcurrent protection or compressor overcurrent protection in the T time, if so, executing step S1620, otherwise, returning to continue executing step S1610;
step S1620, judging that the current state is a frequent overcurrent protection state;
step S1630, the air conditioner is protected to stop locking unless the remote controller is powered off and then restarted or powered on after power off.
Specifically, because the current of the whole machine and the current of the compressor are relatively large when the air conditioner is heavy in load, when the protection shutdown parameter is reached, frequent protection shutdown and restarting are possible, so that the user experience is poor. And when the air conditioner is judged to be in a frequent protection state and in a heavy running state, the running frequency of the compressor is gradually adjusted so that the system runs stably for a long time, and the user comfort experience is improved.
Based on the above-described control method of the air conditioner, various embodiments of the controller, the air conditioner, and the computer-readable storage medium of the present invention are respectively presented below.
In addition, one embodiment of the present invention provides a controller including: a processor, a memory, and a computer program stored on the memory and executable on the processor.
The processor and the memory may be connected by a bus or other means.
It should be noted that, the controller in this embodiment may include a processor and a memory in the embodiment shown in fig. 1, which belong to the same inventive concept, so that the processor and the memory have the same implementation principle and beneficial effects, which are not described in detail herein.
The non-transitory software programs and instructions required to implement the control method of an air conditioner of the above-described embodiments are stored in the memory, and when executed by the processor, the control method of an air conditioner of the above-described embodiments is performed.
It should be noted that, since the controller according to the embodiment of the present invention is capable of executing the control method of the air conditioner according to the above embodiment, specific implementation and technical effects of the controller according to the embodiment of the present invention may refer to specific implementation and technical effects of the control method of the air conditioner according to any one of the above embodiments.
In addition, an embodiment of the invention also provides an air conditioner, which comprises the controller.
It should be noted that, since the air conditioner according to the embodiment of the present invention has the controller according to the above embodiment, and the controller according to the above embodiment is capable of executing the control method of the air conditioner according to the above embodiment, specific implementation and technical effects of the air conditioner according to the embodiment of the present invention may refer to specific implementation and technical effects of the control method of the air conditioner according to any of the above embodiments.
In addition, an embodiment of the present invention also provides a computer-readable storage medium storing computer-executable instructions for performing the above-described control method of an air conditioner. Illustratively, the method steps in fig. 2-13 described above are performed.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (8)
1. An air conditioner control method, comprising:
after the air conditioner is started, controlling the compressor to operate on an operation platform with the highest operation frequency;
acquiring the running state of an air conditioner;
when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a heavy-load running state, reducing the running frequency of a compressor in the air conditioner;
the compressor is provided with a multistage operation platform with successively decreasing operation frequencies; the reducing the operation frequency of the compressor in the air conditioner comprises the following steps: when the current operation platform of the compressor is not the operation platform with the lowest operation frequency, the compressor is controlled to be switched to the next operation platform from the current operation platform, wherein the operation frequency corresponding to the next operation platform is lower than the operation frequency corresponding to the current operation platform;
wherein, after the number of times of overcurrent protection of the air conditioner in the preset time reaches the preset number of times and the air conditioner is in a heavy-load running state, the method further comprises:
when the current operation platform of the compressor is the operation platform with the lowest operation frequency, controlling the air conditioner to keep an overcurrent protection stop state;
wherein the heavy load operating condition is determined by one of the following steps:
acquiring a first outdoor environment temperature under the condition that the air conditioner is in a refrigeration mode, and determining that the air conditioner is in a heavy-load running state when the first outdoor environment temperature is greater than a first preset temperature;
acquiring a second outdoor environment temperature under the condition that the air conditioner is in a heating mode, and determining that the air conditioner is in a heavy-load running state when the second outdoor environment temperature is smaller than a third preset temperature;
acquiring the temperature of an indoor coil pipe under the condition that the air conditioner is in a heating mode, and determining that the air conditioner is in a heavy-load running state when the temperature of the indoor coil pipe is higher than a fourth preset temperature;
wherein, after the operation state of the air conditioner is obtained, the method further comprises: when the overcurrent protection times of the air conditioner in the preset time reach the preset times and the air conditioner is in a non-heavy-load running state, the air conditioner is controlled to keep the overcurrent protection stopping state, and when a starting instruction is acquired, the air conditioner is controlled to release the overcurrent protection stopping state.
2. The method of claim 1, wherein the number of over-current protections of the air conditioner for a preset time includes at least one of:
the frequency of the over-current protection of the whole air conditioner occurs within a preset time;
the air conditioner generates the times of compressor overcurrent protection in a preset time.
3. The method of claim 2, wherein when the number of over-current protection times of the air conditioner for the preset time includes the number of times that the overall over-current protection of the air conditioner occurs for the preset time, the overall over-current protection is determined by:
acquiring the whole machine current of the air conditioner;
and when the whole machine current is larger than or equal to the preset whole machine current, determining that the air conditioner generates whole machine overcurrent protection.
4. The method of claim 2, wherein when the number of over-current protection of the air conditioner for a preset time includes the number of compressor over-current protection of the air conditioner for a preset time, the compressor over-current protection is determined by:
obtaining a compressor current of the compressor;
and when the compressor current is greater than or equal to a preset compressor current, determining that the air conditioner generates compressor overcurrent protection.
5. The method of claim 1, wherein the reload operating condition is further determined by:
and under the condition that the air conditioner is in a refrigeration mode, acquiring the temperature of the outdoor coil, and determining that the air conditioner is in a heavy-load running state when the temperature of the outdoor coil is greater than a second preset temperature.
6. A controller, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to any one of claims 1 to 5 when the computer program is executed.
7. An air conditioner comprising the controller of claim 6.
8. A computer readable storage medium storing computer executable instructions for performing the method of any one of claims 1 to 5.
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| CN106403193B (en) * | 2016-10-17 | 2018-12-07 | 珠海格力电器股份有限公司 | Air conditioner and its control method |
| CN107270500B (en) * | 2017-06-07 | 2020-03-06 | 广东美的制冷设备有限公司 | Air conditioner, compressor control method thereof, and computer-readable storage medium |
| CN109442669B (en) * | 2018-11-12 | 2020-11-24 | 奥克斯空调股份有限公司 | Air conditioner control method and device and air conditioner |
| CN111271834A (en) * | 2019-05-28 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Frequency reduction control method of air conditioner and air conditioner |
| CN111219847A (en) * | 2019-12-06 | 2020-06-02 | 宁波奥克斯电气股份有限公司 | Method and device for avoiding abnormal shutdown of air conditioner due to sudden change of voltage and air conditioner |
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