CN111397169A - Air conditioner frequency limiting method, air conditioner and storage medium - Google Patents
Air conditioner frequency limiting method, air conditioner and storage medium Download PDFInfo
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- CN111397169A CN111397169A CN202010234404.2A CN202010234404A CN111397169A CN 111397169 A CN111397169 A CN 111397169A CN 202010234404 A CN202010234404 A CN 202010234404A CN 111397169 A CN111397169 A CN 111397169A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—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
- 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
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Abstract
The invention provides an air conditioner frequency limiting method, an air conditioner and a storage medium, wherein the air conditioner frequency limiting method comprises the steps of obtaining a heat exchange temperature value of an evaporator, an exhaust temperature value of a compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter; if so, reducing the operating frequency of the compressor. In the running process of the air conditioner, the heat exchange temperature value, the exhaust temperature value and the running parameter related to the working power of the air conditioner are obtained, whether the air conditioner is in an over-frequency state or not is judged according to the data, if yes, the power consumption of the air conditioner is overhigh or the temperature of part of elements is overhigh at the moment, the running frequency of a compressor is further reduced, and the reduction of the service life of the air conditioner due to overhigh power consumption of the air conditioner is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner frequency limiting method, an air conditioner and a storage medium.
Background
In the use of air conditioner, the easy gathering dust of wind channel, fan and the easy wind parts such as heat exchanger of air conditioner breed the bacterium, so, the new trend of air conditioner exhalation also receives the pollution easily, and then influences indoor air quality, endangers people's health.
In order to solve the above problems, the conventional air conditioner generally implements self-cleaning by controlling the temperature of the evaporator. In the process of raising the temperature of the evaporator, the power consumption of the air conditioner is easily too high or the temperature of part of the components is easily too high, in this case, if the working power of the air conditioner cannot be further limited, the service life of the air conditioner may be affected, and in a severe case, the air conditioner may even be damaged.
Disclosure of Invention
The invention mainly aims to provide a frequency limiting method of an air conditioner, the air conditioner and a storage medium, and aims to solve the technical problem that the service life of the air conditioner is influenced by overhigh working power in the process of starting a self-cleaning function of the conventional air conditioner.
The invention provides a frequency limiting method of an air conditioner, which comprises the following steps:
acquiring a heat exchange temperature value of the evaporator, an exhaust temperature value of the compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter;
if so, reducing the operating frequency of the compressor.
Optionally, the step of determining whether the air conditioner is in an over-frequency state according to the heat exchange temperature value, the exhaust temperature value and the operating parameter includes:
and determining that the air conditioner is in an over-frequency state under the condition that the heat exchange temperature value is greater than a preset frequency limit temperature value and the exhaust temperature value is greater than a preset first temperature value.
Optionally, the step of reducing the operating frequency of the compressor comprises:
controlling the compressor to keep the current operating frequency under the condition that the exhaust temperature value is greater than a preset first temperature value and less than or equal to a preset second temperature value;
controlling the compressor to reduce the frequency under the condition that the exhaust temperature value is greater than a preset second temperature value and less than or equal to a preset third temperature value;
and controlling the compressor to be closed under the condition that the exhaust temperature value is greater than a preset third temperature value.
Optionally, the step of determining whether the air conditioner is in an over-frequency state according to the heat exchange temperature value, the exhaust temperature value and the operating parameter includes:
and under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency limit condition, determining that the air conditioner is in an over-frequency state.
Optionally, the step of reducing the operating frequency of the compressor further includes:
controlling the compressor to keep the current running frequency and reducing the rotating speed of the fan;
and controlling the compressor to reduce the frequency under the condition that the rotating speed of the fan reaches a preset rotating speed.
Optionally, after the step of controlling the compressor to perform the frequency reduction, the method further includes:
and under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency increasing condition, controlling the compressor to increase the frequency.
Optionally, the step of controlling the compressor to perform frequency reduction includes:
acquiring the operating frequency F1 before the compressor is subjected to frequency reduction, and controlling the compressor to perform frequency reduction in a first preset period and a first preset amplitude;
acquiring the current operating frequency F2 of the compressor, and judging whether the compressor is in a slow-down state according to the operating frequency F1 and the operating frequency F2;
if so, controlling the compressor to perform frequency reduction by using a second preset period and a second preset amplitude value, wherein the second preset period is smaller than the first preset period, and the second preset amplitude value is smaller than the first preset amplitude value.
Optionally, the step of determining whether the compressor belongs to a slow-down state according to the operating frequency F1 and the operating frequency F2 comprises:
when the value of the operating frequency F2 is equal to the value of the operating frequency F1 multiplied by a preset frequency reduction coefficient, the compressor is determined to be in a slow-down state.
Further, to achieve the above object, the present invention also provides an air conditioner including: the air conditioner frequency limiting program is stored on the memory and can run on the processor, and when being executed by the processor, the air conditioner frequency limiting program realizes the steps of the air conditioner frequency limiting method.
In addition, to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon an air conditioner frequency limiting program, which when executed by a processor, implements the steps of the air conditioner frequency limiting method as described above.
The invention provides an air conditioner frequency limiting method, an air conditioner and a storage medium, wherein the air conditioner frequency limiting method comprises the steps of obtaining a heat exchange temperature value of an evaporator, an exhaust temperature value of a compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter; if so, reducing the operating frequency of the compressor.
In the running process of the air conditioner, the heat exchange temperature value, the exhaust temperature value and the running parameter related to the working power of the air conditioner are obtained, whether the air conditioner is in an over-frequency state or not is judged according to the data, if yes, the power consumption of the air conditioner is overhigh or the temperature of part of elements is overhigh at the moment, the running frequency of a compressor is further reduced, and the reduction of the service life of the air conditioner due to overhigh power consumption of the air conditioner is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating an embodiment of a method for limiting a frequency of an air conditioner according to the present invention;
FIG. 3 is a schematic block diagram illustrating an embodiment of a frequency limiting method for an air conditioner according to the present invention;
FIG. 4 is a detailed schematic view of the process flow of the step of reducing the operating frequency of the compressor in the air conditioner frequency limiting method according to the present invention;
fig. 5 is a detailed schematic view of a flow of the step of controlling the compressor to perform frequency reduction according to the frequency limiting method of the air conditioner of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal is a device which can be real-time monitoring equipment started by a fixed-frequency electric appliance and can also be other electric power monitoring equipment with a storage function.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include a camera, a Wi-Fi module, and the like, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 mainly includes an input unit such as a keyboard including a wireless keyboard and a wired keyboard, and is used to connect to the client and perform data communication with the client; and the processor 1001 may be configured to call the air conditioner frequency limiting program stored in the memory 1005 and perform the following operations:
acquiring a heat exchange temperature value of the evaporator, an exhaust temperature value of the compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter;
if so, reducing the operating frequency of the compressor.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
and determining that the air conditioner is in an over-frequency state under the condition that the heat exchange temperature value is greater than a preset frequency limit temperature value and the exhaust temperature value is greater than a preset first temperature value.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
controlling the compressor to keep the current operating frequency under the condition that the exhaust temperature value is greater than a preset first temperature value and less than or equal to a preset second temperature value;
controlling the compressor to reduce the frequency under the condition that the exhaust temperature value is greater than a preset second temperature value and less than or equal to a preset third temperature value;
and controlling the compressor to be closed under the condition that the exhaust temperature value is greater than a preset third temperature value.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
and under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency limit condition, determining that the air conditioner is in an over-frequency state.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
controlling the compressor to keep the current running frequency and reducing the rotating speed of the fan;
and controlling the compressor to reduce the frequency under the condition that the rotating speed of the fan reaches a preset rotating speed.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
and under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency increasing condition, controlling the compressor to increase the frequency.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
acquiring the operating frequency F1 before the compressor is subjected to frequency reduction, and controlling the compressor to perform frequency reduction in a first preset period and a first preset amplitude;
acquiring the current operating frequency F2 of the compressor, and judging whether the compressor is in a slow-down state according to the operating frequency F1 and the operating frequency F2;
if so, controlling the compressor to perform frequency reduction by using a second preset period and a second preset amplitude value, wherein the second preset period is smaller than the first preset period, and the second preset amplitude value is smaller than the first preset amplitude value.
Further, the processor 1001 may call the air conditioner frequency limiting program stored in the memory 1005, and also perform the following operations:
when the value of the operating frequency F2 is equal to the value of the operating frequency F1 multiplied by a preset frequency reduction coefficient, the compressor is determined to be in a slow-down state.
The specific embodiment of the device is substantially the same as the following embodiments of the frequency limiting method of the air conditioner, and the detailed description thereof is omitted.
Referring to fig. 2, fig. 2 is a flowchart illustrating a frequency limiting method of an air conditioner according to an embodiment of the present invention. The frequency limiting method of the air conditioner provided by the embodiment comprises the following steps:
step S10, acquiring a heat exchange temperature value of the evaporator, an exhaust temperature value of the compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter;
for elaborating the requirements of the present embodiment, please refer to fig. 3, and fig. 3 is a schematic block diagram illustrating an embodiment of a frequency limiting method of an air conditioner according to the present invention. The evaporator is used for generating heat to generate high temperature, viruses and bacteria in the air conditioner are inactivated through the high temperature, and the air conditioner is self-cleaned, so that fresh air exhaled by the air conditioner is healthier; the compressor runs at a certain frequency to ensure the normal work of the air conditioner, and the higher the running frequency of the compressor is, the higher the working power of the evaporator is; the fan runs at a certain rotating speed and is used for exchanging heat between outdoor air and indoor air and adjusting the temperature of the evaporator; the first temperature sensor is used for detecting the temperature of the evaporator, and the second temperature sensor is used for detecting the temperature of the gas exhausted by the compressor; the controller is used for receiving the temperature values sent by the first temperature sensor and the second temperature sensor and can control the running frequency of the compressor and the rotating speed of the fan.
The controller obtains the temperature value when the evaporator works, takes the temperature value as a heat exchange temperature value, obtains the temperature value of the exhaust gas when the compressor works, and takes the temperature value as an exhaust temperature value. As can be seen with reference to fig. 3, the controller may obtain the heat exchange temperature value via the first temperature sensor and the exhaust temperature value via the second temperature sensor. Meanwhile, the controller also obtains the operating parameters of the air conditioner, wherein the operating parameters include but are not limited to a current value and a voltage value when the air conditioner operates.
And after the data are obtained, judging whether the air conditioner is in an overclocking state. It should be understood that the over-frequency state refers to a state in which the operating frequency of the compressor of the air conditioner is too high, the operating frequency exceeds the safe operating frequency, or the operating temperature of the evaporator is too high, which may easily cause damage to the evaporator, and may affect the service life of the air conditioner if the compressor is not down-converted or the evaporator is cooled. As an optional mode, whether the air conditioner is in an over-frequency state or not can be judged according to the heat exchange temperature value and the exhaust temperature value; alternatively, whether the air conditioner is in the over-frequency state may be judged according to the operation parameters of the air conditioner.
And step S20, if yes, reducing the operating frequency of the compressor.
When the air conditioner is in an over-frequency state, the operating frequency of the compressor can be adjusted, and the working temperature of the evaporator is reduced by adjusting the rotating speed of the fan.
The embodiment provides an air conditioner frequency limiting method, an air conditioner and a storage medium, wherein the air conditioner frequency limiting method comprises the steps of obtaining a heat exchange temperature value of an evaporator, an exhaust temperature value of a compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter; if so, reducing the operating frequency of the compressor. In the operation process of the air conditioner, the heat exchange temperature value, the exhaust temperature value and the operation parameter related to the working power of the air conditioner are obtained, whether the air conditioner is in an over-frequency state or not is judged according to the data, if yes, the power consumption of the air conditioner is too high or the temperature of part of elements is too high at the moment, the operation frequency of the compressor is adjusted, and the problem that the service life of the air conditioner is shortened due to the fact that the power consumption of the air conditioner is too high is avoided.
Further, the step of judging whether the air conditioner is in an over-frequency state according to the heat exchange temperature value, the exhaust temperature value and the operation parameter comprises the following steps:
and step S11, determining that the air conditioner is in an over-frequency state under the condition that the heat exchange temperature value is greater than a preset frequency limit temperature value and the exhaust temperature value is greater than a preset first temperature value.
As an optional manner, in this embodiment, whether the air conditioner is in the over-frequency state is determined according to the heat exchange temperature value and the exhaust temperature value, in this embodiment, a frequency-limited temperature value and a first temperature value are preset, and particularly, the frequency-limited temperature value is preferably 56 degrees.
When the heat exchange temperature value when the evaporator works is larger than the preset frequency limit temperature value and the exhaust temperature value of the evaporator is larger than the preset first temperature value, the heat generated when the evaporator works is more, the temperature of the evaporator is too high, and if the operation frequency of the compressor is not adjusted, the evaporator can be damaged. The embodiment determines whether the air conditioner is in the overclocking state through the above mode, and then limits the frequency of the air conditioner in the overclocking state in time.
For example, assuming that the preset frequency limit temperature value is 56 degrees and the preset first temperature value is 90 degrees, when the heat exchange temperature value is greater than 56 degrees and the exhaust temperature value is greater than 90 degrees, it is determined that the air conditioner is in an over-frequency state and the operating frequency of the compressor needs to be limited; when the heat exchange temperature value is not greater than 56 degrees, or the exhaust temperature is not greater than 90 degrees, whether the air conditioner is in an over-frequency state or not needs to be further determined according to the operation parameters of the air conditioner.
Further, referring to fig. 4, fig. 4 is a detailed schematic view of a flow of the step of reducing the operating frequency of the compressor in the frequency limiting method of the air conditioner of the present invention. The step of reducing the operating frequency of the compressor comprises:
step S21, controlling the compressor to keep the current operation frequency under the condition that the exhaust temperature value is greater than a preset first temperature value and less than or equal to a preset second temperature value;
step S22, controlling the compressor to reduce the frequency when the exhaust temperature value is greater than a preset second temperature value and less than or equal to a preset third temperature value;
and step S23, controlling the compressor to be closed under the condition that the exhaust temperature value is greater than a preset third temperature value.
In order to further accurately determine the time for limiting the frequency of the compressor, the operation frequency of the compressor is adjusted according to the actual working condition of the compressor. In this embodiment, a second temperature value and a third temperature value are preset, where the first temperature value is smaller than the second temperature value, and the second temperature value is smaller than the third temperature value. With reference to the above embodiment, the first temperature value is preferably 90 degrees, the second temperature value is preferably 100 degrees, the third temperature value is preferably 110 degrees, and the operating frequency of the compressor is adjusted in a partitioned manner according to the discharge temperature value.
And when the exhaust temperature value is greater than the preset first temperature value and less than or equal to the preset second temperature value, indicating that the operation frequency of the compressor at the moment meets the safety standard, and controlling the compressor to keep the current operation frequency if the compressor continues to operate at the frequency and cannot damage the air conditioner. And if the operation frequency of the compressor is not adjusted, the service life of the air conditioner can be influenced, and the compressor is controlled to reduce the frequency at a certain period and amplitude. And under the condition that the exhaust temperature value is greater than the preset third temperature value, indicating that the running frequency of the compressor is very high at the moment, immediately closing the compressor to protect the air conditioner body.
Through the mode, the operation frequency of the compressor is correspondingly controlled according to the actual operation condition of the compressor, so that the phenomenon that the service life of the air conditioner is reduced due to overhigh power consumption of the air conditioner is avoided.
Further, the step of judging whether the air conditioner is in an over-frequency state according to the heat exchange temperature value, the exhaust temperature value and the operation parameter comprises the following steps:
and step S12, determining that the air conditioner is in an over-frequency state under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency limit condition.
In this embodiment, it may be directly determined that the air conditioner is in the over-frequency state when the heat exchange temperature value reaches the preset maximum heat exchange temperature in a manner of presetting the maximum heat exchange temperature and the maximum exhaust temperature, without judging whether the exhaust temperature value is higher than the preset first temperature value; similarly, when the exhaust temperature value reaches the preset maximum exhaust temperature value, the air conditioner is directly determined to be in the over-frequency state, and whether the ventilation temperature value is higher than the preset frequency limit temperature value or not is not required to be judged.
It is easy to understand that the operation parameters in this embodiment include a voltage value and a current value when the air conditioner operates, and in this embodiment, it is determined that the air conditioner is in an over-frequency state when the voltage value reaches a preset maximum voltage value by means of presetting the maximum voltage value and the maximum current value; or when the current value reaches the preset maximum current value, determining that the air conditioner is in an overclocking state.
In this embodiment, through the above manner, according to the operation parameters of the air conditioner in the actual operation process, it is determined whether the air conditioner is in the over-frequency state, and then the frequency of the air conditioner in the over-frequency state is limited in time.
Further, the step of reducing the operating frequency of the compressor further includes:
step S24, controlling the compressor to keep the current running frequency and reducing the rotating speed of the fan;
and step S25, controlling the compressor to reduce the frequency under the condition that the rotating speed of the fan reaches a preset rotating speed.
In the process of adjusting the operating frequency of the compressor and reducing the frequency of the compressor, the frequency of the compressor is not directly reduced, but the rotating speed of the fan is reduced at first, specifically, the rotating speed of the fan can be reduced in a mode of 10rpm/min to 50rpm/min until the rotating speed of the fan reaches a stable preset rotating speed, and then the compressor is controlled to reduce the frequency.
As another optional mode, the frequency of the compressor may be reduced first, and then the fan is controlled to reduce the rotation speed, specifically, the frequency of the compressor may be reduced in a mode of 1hz/min first until the operation frequency of the compressor reaches the stable preset operation frequency, and then the rotation speed of the fan is reduced.
In the embodiment, the compressor and the fan are staggered and adjusted, the frequency of the compressor is adjusted firstly and then the rotating speed of the fan is reduced, or the rotating speed of the fan is reduced firstly and then the frequency of the compressor is adjusted, so that the stability of the air conditioner in the frequency reduction process is ensured.
Further, after the step S25 controls the compressor to perform frequency reduction, the method further includes:
and step S26, controlling the compressor to perform frequency raising under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency raising condition.
In this embodiment, in the process of controlling the compressor to reduce the frequency, the heat exchange temperature value, the exhaust temperature value and the operation parameter are obtained in real time, and the relationship between the heat exchange temperature value and the preset lowest heat exchange temperature, and the relationship between the exhaust temperature value and the preset lowest exhaust temperature are compared. When the heat exchange temperature value is lower than the preset lowest heat exchange temperature, the working power of the evaporator is too low, and in order to realize a good self-cleaning effect, the frequency of the compressor is increased so as to improve the working power of the evaporator; when the exhaust temperature value is lower than the preset lowest heat exchange temperature, the working power of the compressor is too low, and the compressor is subjected to frequency boosting in order to maintain the normal working state of the air conditioner.
In addition, the operation parameters in this embodiment include a voltage value and a current value when the air conditioner operates, and in this embodiment, by means of presetting a minimum voltage value and a minimum current value, when the voltage value is lower than the preset minimum voltage value, or the current value is lower than the preset minimum current value, the compressor is frequency-increased in order to maintain a normal operating state of the air conditioner.
The actual operation condition of the air conditioner is determined through the heat exchange temperature value, the exhaust temperature value and the operation parameter, the frequency of the compressor is timely increased, and the air conditioner can be guaranteed to be in a normal working state.
Further, referring to fig. 5, fig. 5 is a detailed schematic view of a flow of the step of controlling the compressor to perform frequency reduction in the frequency limiting method of the air conditioner of the present invention. The step of controlling the compressor to perform frequency reduction comprises the following steps:
step S251, obtaining the operating frequency F1 before the compressor is subjected to frequency reduction, and controlling the compressor to perform frequency reduction according to a first preset period and a first preset amplitude;
step S252, acquiring the current operating frequency F2 of the compressor, and judging whether the compressor is in a slow-down state according to the operating frequency F1 and the operating frequency F2;
step S253, if yes, controlling the compressor to perform frequency reduction with a second preset period and a second preset amplitude, where the second preset period is smaller than the first preset period, and the second preset amplitude is smaller than the first preset amplitude.
In this embodiment, before the frequency of the compressor is reduced, the operating frequency F1 of the compressor is obtained, the compressor is controlled to reduce the frequency with the first preset period and the first preset amplitude, the operating frequency F2 in the frequency reduction process of the compressor is obtained in real time, and when the operating frequency F1 and the operating frequency F2 satisfy a certain condition, it is determined that the compressor is in a slow-down state, that is, the frequency of the compressor can be reduced with a lower frequency. And controlling the compressor to perform frequency reduction by a second preset period and a second preset amplitude value, wherein the second preset period is smaller than the first preset period, and the second preset amplitude value is smaller than the first preset amplitude value, so that the compressor is controlled to perform frequency reduction by the first preset period and the first preset amplitude value as a fast frequency reduction process, and the compressor is controlled to perform frequency reduction by the second preset period and the second preset amplitude value as a slow frequency reduction process.
According to the above, in the process of frequency reduction of the compressor, the compressor is firstly subjected to fast frequency reduction, and then is subjected to slow frequency reduction, so that stable frequency reduction of the compressor is realized, and shutdown failure of the compressor is avoided in the process of frequency reduction.
Further, the step of determining whether the compressor belongs to a slow-down state according to the operation frequency F1 and the operation frequency F2 comprises:
step S2521, when the value of the operating frequency F2 is equal to the value of the operating frequency F1 multiplied by a preset down-conversion coefficient, determining that the compressor is in a slow-down state.
In this embodiment, it can be determined whether the compressor is in a state that the frequency can be reduced with a smaller period and amplitude according to a formula F2 — K × F1, where F2 is a current operating frequency of the compressor detected in real time during the frequency reduction process, F1 is an operating frequency of the compressor before frequency reduction, and K is a preset frequency reduction coefficient.
As can be seen from the formula, when the value of the operating frequency F2 is equal to the value of the operating frequency F1 multiplied by the preset down-conversion coefficient, it can be determined that the compressor is in the slow-down state. The time for the compressor to enter slow down conversion is determined by the operating frequency F1 before down conversion of the compressor and the real-time operating frequency F2 in the process of down conversion of the compressor, so that the stability and the safety of the compressor in the process of down conversion are ensured.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where an air conditioner frequency limiting program is stored on the computer-readable storage medium, and when the air conditioner frequency limiting program is executed by a processor, the air conditioner frequency limiting program implements the operation of the air conditioner frequency limiting method as described above.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the frequency limiting method of the air conditioner, and will not be described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A frequency limiting method of an air conditioner is applied to the air conditioner, the air conditioner comprises an evaporator, a compressor and a fan, and the method is characterized by comprising the following steps:
acquiring a heat exchange temperature value of the evaporator, an exhaust temperature value of the compressor and an operation parameter of the air conditioner, and judging whether the air conditioner is in an over-frequency state or not according to the heat exchange temperature value, the exhaust temperature value and the operation parameter;
if so, reducing the operating frequency of the compressor.
2. The method of claim 1, wherein the step of determining whether the air conditioner is in an over-frequency state according to the heat exchange temperature value, the exhaust temperature value and the operating parameter comprises:
and determining that the air conditioner is in an over-frequency state under the condition that the heat exchange temperature value is greater than a preset frequency limit temperature value and the exhaust temperature value is greater than a preset first temperature value.
3. The air conditioner frequency limiting method of claim 2, wherein the step of reducing the operating frequency of the compressor comprises:
controlling the compressor to keep the current operating frequency under the condition that the exhaust temperature value is greater than a preset first temperature value and less than or equal to a preset second temperature value;
controlling the compressor to reduce the frequency under the condition that the exhaust temperature value is greater than a preset second temperature value and less than or equal to a preset third temperature value;
and controlling the compressor to be closed under the condition that the exhaust temperature value is greater than a preset third temperature value.
4. The method of claim 1, wherein the step of determining whether the air conditioner is in an over-frequency state according to the heat exchange temperature value, the exhaust temperature value and the operating parameter comprises:
and under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency limit condition, determining that the air conditioner is in an over-frequency state.
5. The air conditioner frequency limiting method of claim 4, wherein the step of reducing the operating frequency of the compressor further comprises:
controlling the compressor to keep the current running frequency and reducing the rotating speed of the fan;
and controlling the compressor to reduce the frequency under the condition that the rotating speed of the fan reaches a preset rotating speed.
6. The air conditioner frequency limiting method of claim 5, wherein after the step of controlling the compressor to perform frequency reduction, further comprising:
and under the condition that any one of the heat exchange temperature value, the exhaust temperature value and the operation parameter meets a preset frequency increasing condition, controlling the compressor to increase the frequency.
7. The air conditioner frequency limiting method of claim 5, wherein the step of controlling the compressor to perform the frequency down-conversion comprises:
acquiring the operating frequency F1 before the compressor is subjected to frequency reduction, and controlling the compressor to perform frequency reduction in a first preset period and a first preset amplitude;
acquiring the current operating frequency F2 of the compressor, and judging whether the compressor is in a slow-down state according to the operating frequency F1 and the operating frequency F2;
if so, controlling the compressor to perform frequency reduction by using a second preset period and a second preset amplitude value, wherein the second preset period is smaller than the first preset period, and the second preset amplitude value is smaller than the first preset amplitude value.
8. The air conditioner frequency limiting method as claimed in claim 7, wherein the step of determining whether the compressor belongs to a slow-down state according to the operation frequency F1 and the operation frequency F2 comprises:
when the value of the operating frequency F2 is equal to the value of the operating frequency F1 multiplied by a preset frequency reduction coefficient, the compressor is determined to be in a slow-down state.
9. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor and an air conditioner frequency limiting program stored on the memory and operable on the processor, the air conditioner frequency limiting program configured to implement the steps of the air conditioner frequency limiting method according to any one of claims 1 to 8.
10. A storage medium having stored thereon an air conditioner frequency limiting program, the air conditioner frequency limiting program when executed by a processor implementing the steps of the air conditioner frequency limiting method according to any one of claims 1 to 8.
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| CN112944602A (en) * | 2021-02-04 | 2021-06-11 | 珠海格力电器股份有限公司 | Control method and device of fixed-frequency air conditioner, storage medium and fixed-frequency air conditioner |
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| CN114383258A (en) * | 2022-01-27 | 2022-04-22 | 宁波奥克斯电气股份有限公司 | Method for controlling frequency fluctuation of compressor, air conditioner, and storage medium |
| CN114687185A (en) * | 2020-12-28 | 2022-07-01 | 广东美的白色家电技术创新中心有限公司 | Compressor frequency adjusting method, control device, heat exchange equipment and electronic equipment |
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