CN111442484B - Method and device for controlling air conditioning system and air conditioning system - Google Patents
Method and device for controlling air conditioning system and air conditioning system Download PDFInfo
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 2
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- 230000033228 biological regulation Effects 0.000 description 12
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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
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- 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
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Abstract
The application relates to the technical field of intelligent household appliances, and discloses a method for controlling an air conditioning system, which comprises the following steps: acquiring a first detection value of the pressure of an exhaust port of the compressor; and when the first detection value is greater than or equal to the first preset value, reducing the frequency of the compressor or adjusting the rotating speed of the indoor fan so as to prevent the compressor from exploding and igniting due to overlarge internal pressure. According to the method and the device, the running state of the compressor or the indoor fan is adjusted according to the comparison result of the first detection value and the first preset value of the pressure of the compressor, the air conditioning system is prevented from being on fire, and the air conditioning system is prevented from being stopped by mistake. The application also discloses a device and an air conditioning system for controlling the air conditioning system.
Description
Technical Field
The present application relates to the field of intelligent household electrical appliance technologies, and for example, to a method and an apparatus for controlling an air conditioning system, and an air conditioning system.
Background
In the working and running process of the air conditioning system, the compressor is exploded due to reasons such as overlarge system pressure and the like, or a combustible refrigerant is leaked to cause a fire accident, so that air conditioning components are burnt. If the flame spread to the room is not controlled or the fire is burnt, the consequences are more serious, so that the air conditioning system is very dangerous after the fire. At present, some air conditioners judge whether to catch fire or not by detecting whether the surrounding environment is abnormal or not, the fire behavior may be greatly uncontrollable when the surrounding environment is abnormal, and the scheme has a limited effect on fire prevention. Some air conditioners are provided with sensors for preventing fire, and the air conditioners are subjected to shutdown control according to detection results of the sensors so as to avoid the occurrence of fire.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: when the detection result is abnormal, the air conditioning system is directly controlled to stop, and the air conditioning system is easily stopped by mistake.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling an air conditioning system and the air conditioning system, and aims to solve the technical problem of preventing the air conditioning system from being stopped by mistake when a fire breaks.
In some embodiments, the method comprises: acquiring a first detection value of the pressure of an exhaust port of the compressor; and when the first detection value is greater than or equal to a first preset value, reducing the frequency of the compressor or adjusting the rotating speed of the indoor fan so as to prevent the air conditioning system from firing.
In some embodiments, an apparatus includes a processor and a memory storing program instructions, the processor configured to, when executing the program instructions, perform the method for controlling an air conditioning system provided by the foregoing embodiments.
In some embodiments, the air conditioning system comprises an apparatus for controlling an air conditioning system as provided in the previous embodiments.
The method and the device for controlling the air conditioning system and the air conditioning system provided by the embodiment of the disclosure can achieve the following technical effects: according to the comparison result of the first detection value and the first preset value of the pressure of the compressor, the running state of the compressor or the indoor fan is adjusted, on one hand, explosion and fire of the compressor can be prevented, and on the other hand, the air conditioning system can be prevented from being stopped by mistake.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of a method for controlling an air conditioning system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for controlling an air conditioning system provided by an embodiment of the present disclosure;
fig. 3 is a schematic diagram of another apparatus for controlling an air conditioning system according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
Referring to fig. 1, an embodiment of the present disclosure provides a method for controlling an air conditioning system, including:
s10, acquiring a first detection value of the pressure of the exhaust port of the compressor;
and S20, when the first detection value is larger than or equal to the first preset value, reducing the frequency of the compressor or adjusting the rotating speed of the indoor fan to prevent the air conditioning system from firing.
When the internal temperature of the compressor rises, the pressure at the exhaust port of the compressor is increased more, and if the internal pressure of the compressor is not found in time and is allowed to develop, the compressor may explode and catch fire. The working condition of the compressor can be directly known by detecting the pressure of the exhaust port of the compressor. When the first detection value is larger than or equal to the first preset value, the pressure of the exhaust port of the compressor is abnormal, if the pressure is developed to be possible to explode and catch fire, and the pressure in the compressor is reduced by controlling the frequency of the compressor to be reduced; or the pressure of the refrigerant of the air conditioning system is adjusted by adjusting the rotating speed of the indoor fan, so that the pressure of the exhaust port of the compressor is adjusted. When the first detection value is smaller than the first preset value, the internal pressure and the internal temperature of the compressor are normal, and at the moment, the compressor is controlled to keep the current running state without other adjustment. The frequency of the compressor is reduced or the rotating speed of the indoor fan is adjusted, so that the pressure of the exhaust port of the compressor is reduced, the ignition is avoided, and the fire of the outdoor unit of the air conditioner is prevented.
By the embodiment, when the pressure at the exhaust port of the compressor is slightly abnormal, the air conditioning system is not stopped directly, and the abnormal condition is attempted to be relieved by some adjustment of internal components by the air conditioning system, so that the error stop of the air conditioning system is reduced.
The first preset value is a value close to the warning value of the pressure at the air outlet of the compressor, if the pressure at the air outlet of the compressor is larger than or equal to the first preset value, the pressure at the air outlet of the compressor is abnormal, and further measures are needed to prevent the compressor from being on fire. If the pressure of the exhaust port of the compressor is lower than the first preset value, the pressure is a normal pressure value. Optionally, P1 ═ P2-K, where P2 is the second preset value of the compressor discharge pressure, P2 > P1, K is 1MPa to 2MPa, and P1 is the first preset value. Therefore, the first preset value can be calculated according to the second preset value of the air outlet of the compressor, and whether the pressure of the air outlet of the compressor is abnormal or not is judged. Alternatively, the K value increases with an increase in the external ambient temperature. For example, a large value may be selected in summer (high outer ring temperature) and a small value may be selected in winter (low outer ring temperature).
Optionally, the warning value of the compressor discharge pressure is determined according to the allowable pressure value of the compressor. The allowable pressure is the minimum value of the allowable pressure at the cylinder body, the exhaust pipeline, the welding seam and the like of the compressor. The allowable pressure value needs to be determined by combining the initial allowable pressure value when the compressor is shipped from the factory and the accumulated running time of the air conditioning system. The accumulated running time of the air conditioning system is the total accumulated running time of the air conditioning system after leaving a factory. When the operation time of the air conditioning system is long, the allowable pressure value of the exhaust port of the compressor is reduced, and the allowable pressure value needs to be reduced.
Alternatively, a detection value of the compressor discharge port pressure is acquired by providing a pressure sensor. The pressure sensor is configured to detect a pressure of the compressor discharge port. Optionally, a pressure sensor is provided at the compressor discharge. When the machine operates abnormally, the pressure of the exhaust port of the compressor rises, and the pressure sensor is arranged at the exhaust port of the compressor, so that whether the compressor is about to explode and catch fire or not can be detected more quickly.
Optionally, the air conditioning system further comprises a controller configured to adjust a frequency of the compressor or a rotation speed of the indoor fan according to a comparison result between the first detection value and the first preset value, so as to prevent the compressor from firing, and thus prevent the outdoor unit from firing.
In some embodiments, reducing the frequency of the compressor or adjusting the speed of the indoor fan comprises:
when the compressor is a fixed-frequency compressor, adjusting the rotating speed of the indoor fan; or,
when the compressor is an inverter compressor, the frequency of the compressor is reduced.
The type of the compressor is that the compressor belongs to a fixed-frequency compressor or a variable-frequency compressor, different types of compressors control the operation of the compressor in different modes, and some compressors can reduce the pressure of an exhaust port of the compressor in a mode of reducing the frequency; some compressors can reduce the pressure at the exhaust port of the compressor by adjusting the rotating speed of the indoor fan. When the compressor is a variable frequency compressor, the compressor can be directly controlled to reduce the frequency, and further the pressure of the exhaust port of the compressor is reduced. Alternatively, the compressor frequency is controlled to decrease by 10Hz each time. The compressor frequency can be reduced multiple times and by reducing the compressor frequency, the compressor discharge pressure can be reduced. When the compressor is a fixed-frequency compressor, the rotating speed of the indoor fan needs to be controlled to change so as to reduce the pressure of the exhaust port of the compressor.
In some embodiments, adjusting the rotational speed of the indoor fan comprises:
when the air conditioner is in a refrigeration mode, the rotating speed of an indoor fan is adjusted downwards;
when the air conditioner is in a heating mode, the rotating speed of the indoor fan is adjusted upwards.
When the air conditioner is in a refrigeration mode, the rotating speed of the indoor fan is adjusted downwards, the power of the compressor can be reduced, and therefore the pressure of the exhaust port of the compressor is reduced. When the air conditioner is in a heating mode, the rotating speed of the indoor fan is adjusted upwards, the power of the compressor can be reduced, and the pressure of the exhaust port of the compressor is reduced. Optionally, in the cooling mode, the indoor fan speed is reduced to a minimum value. Optionally, the indoor fan speed is adjusted up to a maximum value in the heating mode. Thus, the compressor power can be reduced to the maximum extent, and the compressor discharge port pressure can be reduced as much as possible.
In some embodiments, after reducing the frequency of the compressor or adjusting the rotation speed of the indoor fan, the method further includes:
acquiring a second detection value of the pressure of the exhaust port of the compressor;
and when the second detection value is greater than or equal to the second preset value, stopping the operation of the air conditioning system or continuously reducing the frequency of the compressor.
And after the frequency of the compressor is reduced or the rotating speed of the indoor fan is adjusted, the detection value of the pressure of the exhaust port of the compressor is obtained again and used as a second detection value. Optionally, after the running state of the compressor or the indoor fan is adjusted for a set time, a second detection value of the pressure of the exhaust port of the compressor is obtained. Thus, whether the previous reduction of the compressor frequency or the adjustment of the indoor fan rotation speed has an effect on the pressure reduction of the compressor exhaust port can be judged according to the second detection value.
When the second detection value is larger than or equal to the second preset value, the previous adjustment is not carried out, and the pressure of the air outlet of the compressor returns to the normal range, at the moment, the operation of the air conditioning system is stopped or the frequency of the compressor is continuously reduced, so that the pressure of the air outlet of the compressor is promoted to return to the normal range.
The second preset value is used as a warning value and is determined according to the allowable pressure value. Optionally, P2 ═ P10 ═ 1-k1, where P2 is the second preset value, P10 is the allowable pressure value of the compressor, and k1 is the correction coefficient related to the accumulated operation time of the air conditioning system. Optionally, k1 is 10% to 20%. Through the calculation formula, the second preset value can be calculated according to the allowable pressure value of the compressor. Alternatively, the longer the air conditioning system cumulative operating time, the greater the value of k 1. The second preset value is used as a warning function, and when the pressure of the exhaust port of the compressor rises to the second preset value, the pressure of the exhaust port of the compressor is abnormal, and attention should be paid and certain measures should be taken.
In some embodiments, stopping the operation of the air conditioning system or continuing to reduce the frequency of the compressor comprises:
when the compressor is a fixed-frequency compressor, stopping the operation of the air conditioning system; or,
and when the compressor is the variable frequency compressor, the frequency of the compressor is continuously reduced.
When the compressor is a fixed-frequency compressor, the frequency of the compressor cannot be adjusted, and the air conditioning system needs to be stopped to stop working so as to reduce the pressure of the exhaust port. When the compressor is a frequency conversion compressor, the compressor is controlled to continuously reduce the frequency, so that the pressure of the exhaust port is reduced. Optionally, the frequency of the inverter compressor is reduced to a first frequency for a first time period, and when the second detection value is still greater than or equal to a second preset value, the frequency of the inverter compressor is reduced to a second frequency for operation. And continuously reducing the frequency to enable the second detection value to be smaller than a second preset value.
In some embodiments, after continuing to decrease the frequency of the compressor, the method further comprises:
acquiring a third detection value of the pressure of the exhaust port of the compressor;
and when the third detection value is greater than or equal to the third preset value, stopping the operation of the air conditioning system.
After the frequency of the compressor is continuously reduced, the detected value of the pressure at the discharge port of the compressor is acquired again as a third detected value. When the frequency of the compressor is continuously decreased, the compressor operates in the down-frequency regulation state for a cumulative second time. When the third detection value is larger than or equal to the third preset value, the pressure of the air outlet of the compressor is indicated to be too high, and at the moment, the air conditioning system is directly controlled to stop, so that the pressure of the air outlet of the compressor is prevented from further rising. Optionally, when the third detection value is smaller than the third preset value and larger than the second preset value, the compressor and the indoor fan are controlled to keep the current operation state, wherein the compressor is controlled to keep the current operation state, and when the compressor is an inverter compressor, the frequency of the compressor after the compressor is reduced is kept. Keeping the frequency of the compressor after the compressor is lowered, and if the third detection value reaches the normal range of the pressure of the air outlet of the compressor, enabling the air conditioning system to normally operate; and when the compressor is a fixed-frequency compressor, stopping the operation of the air conditioning system to avoid the pressure rise of the exhaust port.
The third preset value is an allowable pressure value of the compressor, when the third detection value is higher than the allowable pressure value, the pressure of an exhaust port of the compressor is too high, and the compressor is very dangerous. Optionally, the third preset value is greater than the second preset value. The second preset value is used as a warning standard, and the third preset value is used as a danger standard. In this way, the degree of abnormality of the compressor discharge port pressure can be discriminated.
In some embodiments, after stopping the operation of the air conditioning system, the method further comprises: the air conditioning system is restarted and operated in the reverse thermostat mode. The reverse thermostat mode refers to a mode reverse to the initial thermostat mode. The initial thermostat mode refers to an operation mode of the air conditioning system before the first detection value of the discharge port pressure of the compressor is acquired. For example, if the air conditioning system is in the cooling mode before the first detection value of the discharge port pressure of the compressor is obtained, the initial temperature adjustment mode is the cooling mode, and the reverse temperature adjustment mode is the heating mode.
After the operation of the air conditioning system is stopped, the air conditioning system is restarted to operate in the reverse temperature regulation mode, and at the moment, the flow direction of the refrigerant in the air conditioning system is changed, namely the flow direction of the refrigerant in the initial temperature regulation mode is opposite to the flow direction of the refrigerant in the initial temperature regulation mode. Therefore, the change of the refrigerant flowing direction in a positive and negative way can dredge the position possibly blocked in the air conditioning system by utilizing the impact of fluid, so that the refrigerant of the air conditioning system flows smoothly, and the pressure of the exhaust port of the compressor is further reduced. That is, if the compressor discharge port pressure abnormality is caused by the internal blockage of the air conditioning system, the present embodiment can eliminate the abnormality and reduce the discharge port pressure. Optionally, the air conditioning system is stopped from operating for a third period of time and restarted to operate in the reverse thermostat mode for a fourth period of time. Therefore, the flowing refrigerant is beneficial to dredging the compressor. Optionally, the third time period is 3min and the fourth time period is 5 min. The third time and the fourth time are in the setting, so that the dredging effect on the compressor is better.
In some embodiments, restarting the air conditioning system after operating in the reverse thermostat mode further comprises:
stopping the operation of the air conditioning system again;
the air conditioning system is restarted to operate in the initial thermostat mode.
After the air conditioning system is restarted to run in the opposite temperature regulation mode, the air conditioning system is stopped again, the operation of the air conditioning system is stopped, the pressure of the exhaust port of the compressor is reduced, and the energy consumption of the air conditioning system is reduced. Optionally, the air conditioning system is stopped again for 3 min. Therefore, the system pressure can reach an equilibrium state, so that the operation mode can be smoothly switched later, and the next operation can be carried out in time. And restarting the air conditioning system to operate in the initial temperature regulation mode, and returning to the user initial temperature regulation mode.
In some embodiments, restarting the air conditioning system after operating in the initial thermostat mode further comprises:
acquiring a fourth detection value of a discharge port pressure of the compressor
And when the fourth detection value is greater than or equal to the third preset value, stopping the operation of the air conditioning system and reporting a fault.
And after the air conditioning system is restarted to operate in the initial temperature regulation mode, acquiring a fourth detection value for judging in order to prevent the phenomenon that the pressure of the exhaust port of the compressor is abnormal again. The judgment result determines whether the air conditioning system is completely stopped or not, and notifies the fault. Optionally, the air conditioning system is completely shut down so that the start-up command is no longer automatically executed. After the fault of the air conditioning system is removed, the air conditioning system can be controlled to be started up in a manual operation mode.
Illustratively, referring to fig. 2, a method for controlling an air conditioning system includes:
s10, acquiring a first detection value of the pressure of the exhaust port of the compressor;
s21, when the first detection value is larger than or equal to the first preset value, judging the type of the compressor, if the first detection value is larger than or equal to the first preset value, executing the step S22; if yes, go to step S23;
s22, reducing the frequency of the compressor, and executing the step S26;
s23, judging the operation mode of the air conditioner, if the operation mode is the refrigeration mode, executing a step S24; if the mode is the heating mode, go to step S25;
s24, regulating the rotating speed of the indoor fan downwards, and executing the step S26;
s25, increasing the rotating speed of the indoor fan, and executing the step S26;
s26, acquiring a second detection value of the pressure of the exhaust port of the compressor;
s27, when the second detection value is larger than or equal to the second preset value, stopping the operation of the fixed-frequency air conditioning system, and continuously reducing the frequency of the variable-frequency compressor;
s28, acquiring a third detection value of the pressure of the exhaust port of the compressor;
s29, stopping the operation of the air conditioning system when the third detection value is larger than or equal to the third preset value;
s30, restarting the air conditioning system to operate in a reverse temperature regulation mode;
s31, stopping the operation of the air conditioning system again;
s32, restarting the air conditioning system to operate in an initial temperature regulation mode;
s33, acquiring a fourth detection value of the pressure of the exhaust port of the compressor;
and S34, when the fourth detection value is larger than or equal to the third preset value, stopping the operation of the air conditioning system and reporting a fault.
Through this embodiment, air conditioning system judges the degree of pressure anomaly through detecting compressor exhaust port pressure, then adjusts compressor or indoor fan according to the compressor type, then judges once more, to the constant frequency compressor, can't make the discharge pressure be less than the second default through adjusting indoor fan, stops again. And for the variable frequency compressor, stopping the variable frequency compressor after multiple times of frequency reduction, if the exhaust pressure exceeds a third preset value. And after the air conditioning system is shut down, the air conditioning system is restarted to run in an opposite temperature regulation mode, so that the compressor can dredge the inside of the air conditioner to verify whether the pressure of the exhaust port can be reduced, if the pressure of the exhaust port is still higher than a third preset value, the air conditioning system is shut down completely and faults are reported, and regulation is not performed any more. By adopting the method, the use value of the compressor can be maximized, the capacity of the compressor can be exerted to the maximum state under the condition of ensuring the operation safety of the air conditioning system, and the user experience is improved.
As shown in fig. 3, an apparatus for controlling an air conditioning system according to an embodiment of the present disclosure includes a processor (processor)100 and a memory (memory)101 storing program instructions, where the processor is configured to execute a method for controlling an air conditioning system according to any one of the foregoing embodiments when executing the program instructions. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the method for controlling the air conditioning system of the above-described embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the method for controlling the air conditioning system in the above-described embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure also provides an air conditioning system, which comprises the device for controlling the air conditioning system, provided by any one of the embodiments. The air conditioning system adjusts the running state of the compressor or the indoor fan through the device when the pressure of the exhaust port of the compressor is abnormal to a relatively low degree, attempts to remove the abnormal condition, prevents the compressor from exploding and igniting, does not directly stop the air conditioning system, and avoids the air conditioning system from being stopped by mistake.
The embodiment of the disclosure provides a product (for example, a computer, a mobile phone and the like) comprising the device for controlling the air conditioning system.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioning system.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the above-described method for controlling an air conditioning system.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (9)
1. A method for controlling an air conditioning system, comprising:
acquiring a first detection value of the pressure of an exhaust port of the compressor;
when the first detection value is larger than or equal to a first preset value, reducing the frequency of the compressor or adjusting the rotating speed of an indoor fan so as to prevent the compressor from exploding and igniting due to overlarge pressure;
after reducing the frequency of compressor or adjusting the rotational speed of indoor fan, still include:
acquiring a second detection value of the pressure of the exhaust port of the compressor;
when the second detection value is larger than or equal to a second preset value, stopping the operation of the air conditioning system or continuously reducing the frequency of the compressor;
wherein, P1 is P2-K, P1 is a first preset value, P2 is a second preset value, and K is 1 MPa-2 MPa;
p2 is P10 (1-k1), P10 is the allowable pressure value of the compressor, k1 is the correction coefficient related to the accumulated running time of the air conditioning system, and k1 is 10% -20%.
2. The method of claim 1, wherein reducing the frequency of the compressor or adjusting the speed of the indoor fan comprises:
when the compressor is a fixed-frequency compressor, adjusting the rotating speed of the indoor fan; or,
when the compressor is an inverter compressor, the frequency of the compressor is reduced.
3. The method of claim 1, wherein the adjusting the indoor fan speed comprises:
when the air conditioner is in a refrigeration mode, the rotating speed of an indoor fan is adjusted downwards;
when the air conditioner is in a heating mode, the rotating speed of the indoor fan is adjusted upwards.
4. The method of claim 1, wherein stopping operation of the air conditioning system or continuing to reduce the frequency of the compressor comprises:
when the compressor is a fixed-frequency compressor, stopping the operation of the air conditioning system; or,
and when the compressor is the variable frequency compressor, the frequency of the compressor is continuously reduced.
5. The method of claim 1, wherein after continuing to decrease the frequency of the compressor, further comprising:
acquiring a third detection value of the pressure of the exhaust port of the compressor;
and when the third detection value is greater than or equal to a third preset value, stopping the operation of the air conditioning system.
6. The method of claim 1, 4 or 5, wherein after stopping the operation of the air conditioning system, further comprising:
the air conditioning system is restarted and operated in the reverse thermostat mode.
7. The method of claim 6, wherein after restarting the air conditioning system in the reverse thermostat mode, further comprising:
stopping the operation of the air conditioning system again;
the air conditioning system is restarted to operate in the initial thermostat mode.
8. An apparatus for controlling an air conditioning system, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform the method for controlling an air conditioning system according to any one of claims 1 to 7 when executing the program instructions.
9. An air conditioning system, characterized by comprising an apparatus for controlling an air conditioning system according to claim 8.
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| CN111998446A (en) * | 2020-08-17 | 2020-11-27 | 深圳中集天达吉荣航空制冷有限公司 | Airplane ground air conditioning unit and cold quantity control method thereof |
| CN114719423A (en) * | 2021-01-04 | 2022-07-08 | 广东美的制冷设备有限公司 | Air conditioner, control method thereof and readable storage medium |
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