CN114738978B - Air conditioner compressor operation frequency control method, device and storage medium - Google Patents
Air conditioner compressor operation frequency control method, device and storage medium Download PDFInfo
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- CN114738978B CN114738978B CN202210325601.4A CN202210325601A CN114738978B CN 114738978 B CN114738978 B CN 114738978B CN 202210325601 A CN202210325601 A CN 202210325601A CN 114738978 B CN114738978 B CN 114738978B
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- 238000004378 air conditioning Methods 0.000 abstract description 10
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Classifications
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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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- 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 present disclosure relates to a method, an apparatus and a storage medium for controlling an operating frequency of an air conditioner compressor. The air conditioner compressor operation frequency control method comprises the following steps: acquiring the operating frequency of an air conditioner compressor, and monitoring the system pressure in the operating process of the air conditioner compressor; and controlling the operating frequency of the air conditioner compressor according to the operating frequency and the system pressure. According to the method and the device, different residence time can be distinguished through the current system pressure and the system pressure change rate, and the load of the air conditioning system can be controlled in a refined mode.
Description
Technical Field
The disclosure relates to the technical field of air conditioners, and in particular relates to an air conditioner compressor operating frequency control method, an air conditioner compressor operating frequency control device and a storage medium.
Background
The use of air conditioners is becoming more common and the control of air conditioners is constantly being optimized. Among them, it is a relatively important study for the control of an air conditioner compressor.
In the related art, after an air conditioning system is started, a preset number of frequency stop points are generally set in the process of increasing the operating frequency of a compressor. When the actual operating frequency of the compressor reaches the frequency dwell point, the compressor will remain at the current frequency for a period of time to wait for the system to build up load. However, such adjustment of the operating frequency by the actual operating frequency cannot achieve fine control of the system load control.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a method, apparatus and storage medium for controlling an operating frequency of an air conditioner compressor.
According to a first aspect of embodiments of the present disclosure, there is provided an air conditioner compressor operation frequency control method, including obtaining an operation frequency of an air conditioner compressor, and monitoring a system pressure during operation of the air conditioner compressor; and controlling the operating frequency of the air conditioner compressor according to the operating frequency and the system pressure.
In one embodiment, monitoring system pressure during operation of the air conditioning compressor includes: acquiring a preset pressure change time threshold; periodically monitoring the system pressure at the end of each cycle of the air conditioner compressor by taking the pressure change time threshold as a cycle; the control of the air conditioner compressor operating frequency according to the operating frequency and the system pressure includes: determining a system pressure change rate based on the pressure change time threshold and the system pressure monitored in adjacent cycles; and controlling the operating frequency of the air conditioner compressor according to the operating frequency, the system pressure and the system pressure change rate.
In yet another embodiment, the controlling the air conditioner compressor operating frequency according to the operating frequency, the system pressure, and the system pressure change rate includes: determining a target frequency stay threshold value reached by the operating frequency in a plurality of preset frequency stay threshold values, and determining the current monitored system pressure and the current system pressure change rate; and controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold value within the target stay time according to the current system pressure and the current system pressure change rate.
In yet another embodiment, controlling the air conditioner compressor operating frequency to maintain the target frequency dwell threshold for a target dwell time based on a current system pressure and a current system pressure rate of change includes: if the current system pressure is greater than the pressure control threshold and the current system pressure change rate is greater than the pressure change rate threshold, controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold within a first target stay time; if the current system pressure is smaller than or equal to the pressure control threshold value and/or the current system pressure change rate is smaller than or equal to the pressure change rate threshold value, controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold value within a second target stay time; the first target residence time is greater than the second target residence time.
In yet another embodiment, determining a target frequency dwell threshold reached by the operating frequency among a preset plurality of frequency dwell thresholds includes: in response to the operating frequency not reaching a first frequency dwell threshold, taking the first frequency dwell threshold as a target frequency dwell threshold; in response to the operating frequency reaching a first frequency dwell threshold and the operating frequency not reaching the second frequency dwell threshold, taking the second frequency dwell threshold as a target frequency dwell threshold; the first frequency retention threshold and the second frequency retention threshold are two frequency retention thresholds with the smallest difference value among a plurality of preset frequency retention thresholds, and the first frequency retention threshold is smaller than the second frequency retention threshold.
In yet another embodiment, the method further comprises: and if the operating frequency reaches the second frequency stay threshold value, operating according to the operating frequency.
According to a second aspect of embodiments of the present disclosure, there is provided an air conditioner compressor operation frequency control device, including an acquisition unit configured to acquire an operation frequency of an air conditioner compressor, and monitor a system pressure during operation of the air conditioner compressor; and the control unit is used for controlling the operating frequency of the air conditioner compressor according to the operating frequency and the system pressure.
In one embodiment, the acquisition unit monitors the system pressure during operation of the air conditioning compressor as follows: acquiring a preset pressure change time threshold; periodically monitoring the system pressure at the end of each cycle of the air conditioner compressor by taking the pressure change time threshold as a cycle; the control unit controls the operating frequency of the air conditioner compressor according to the operating frequency and the system pressure in the following manner: determining a system pressure change rate based on the pressure change time threshold and the system pressure monitored in adjacent cycles; and controlling the operating frequency of the air conditioner compressor according to the operating frequency, the system pressure and the system pressure change rate.
In another embodiment, the control unit controls the air conditioner compressor operating frequency according to the operating frequency, the system pressure, and the system pressure change rate in the following manner: determining a target frequency stay threshold value reached by the operating frequency in a plurality of preset frequency stay threshold values, and determining the current monitored system pressure and the current system pressure change rate; and controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold value within the target stay time according to the current system pressure and the current system pressure change rate.
In another embodiment, the control unit controls the air conditioner compressor operating frequency to maintain the target frequency dwell threshold for a target dwell time according to a current system pressure and a current system pressure change rate in the following manner: if the current system pressure is greater than the pressure control threshold and the current system pressure change rate is greater than the pressure change rate threshold, controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold within a first target stay time; if the current system pressure is smaller than or equal to the pressure control threshold value and/or the current system pressure change rate is smaller than or equal to the pressure change rate threshold value, controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold value within a second target stay time; the first target residence time is greater than the second target residence time.
In another embodiment, the control unit determines the target frequency dwell threshold reached by the operating frequency among a preset plurality of frequency dwell thresholds in the following manner: in response to the operating frequency not reaching a first frequency dwell threshold, taking the first frequency dwell threshold as a target frequency dwell threshold; in response to the operating frequency reaching a first frequency dwell threshold and the operating frequency not reaching the second frequency dwell threshold, taking the second frequency dwell threshold as a target frequency dwell threshold; the first frequency retention threshold and the second frequency retention threshold are two frequency retention thresholds with the smallest difference value among a plurality of preset frequency retention thresholds, and the first frequency retention threshold is smaller than the second frequency retention threshold.
In another embodiment, the device control unit is further configured to: and when the operating frequency reaches the second frequency stay threshold value, operating according to the operating frequency.
According to a third aspect of the embodiments of the present disclosure, there is provided an air conditioner compressor operation frequency control device, characterized by comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: a method for performing the air conditioner compressor operating frequency control of the first aspect or any one of the embodiments of the first aspect.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a storage medium, wherein instructions are stored in the storage medium, which when executed by a processor of a terminal, enable the terminal including the processor to perform the method of controlling the operating frequency of the air conditioner compressor in the first aspect or any one of the embodiments of the first aspect.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: and in the frequency rising process of the air conditioner compressor, acquiring the running frequency of the air conditioner compressor and the system pressure of the air conditioner compressor. The system pressure is recorded every fixed time to calculate the system pressure change rate of the air conditioner compressor. And judging corresponding different system residence times under the conditions of different system pressures and system pressure change rates according to the system pressures and the system pressure change rates, so as to realize refined control of the system load.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a method of controlling an operating frequency of an air conditioner compressor according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a method of controlling an operating frequency of an air conditioner compressor according to an exemplary embodiment.
Fig. 3 is a flow chart illustrating a method of controlling an operating frequency of an air conditioner compressor according to an operating frequency, a system pressure, and a rate of change of the system pressure.
FIG. 4 is a flow chart illustrating a method of controlling an air conditioner compressor operating frequency to maintain a target frequency dwell threshold for a target dwell time based on a current system pressure and a current system pressure rate of change.
FIG. 5 is a flow chart illustrating a method of determining a target frequency dwell threshold for an operating frequency to achieve from among a preset plurality of frequency dwell thresholds, according to an exemplary embodiment.
Fig. 6 is a schematic diagram illustrating an air conditioner compressor operation frequency control method according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating an air conditioner compressor operating frequency control device according to an exemplary embodiment.
Fig. 8 is a block diagram of an apparatus according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure.
In the related art, the air conditioner compressor generally performs frequency adjustment by an actual operation frequency, but it is difficult to perform fine control by the actual operation frequency adjustment. For example, the air conditioner compressor performs frequency control with a single actual operating frequency as a standard, and the system load control is not fine enough.
The present disclosure provides a method for controlling an operating frequency of an air conditioner compressor to achieve refined control of a system load. In the method, the system load is finely controlled through the operating frequency of the air conditioner compressor and the system pressure.
In the disclosed embodiments, system pressure refers to the discharge pressure or condensing pressure, typically the pressure of the refrigerant gas in the discharge line at the outlet of the air conditioner compressor. The system pressure may be measured by a high pressure gauge. The system pressure is understood to be the system load, and the system load change is understood to be the system load.
Fig. 1 is a flowchart illustrating an air conditioner compressor operation frequency control method according to an exemplary embodiment, and as shown in fig. 1, the air conditioner compressor operation frequency control method includes the following steps.
In step S11, the operating frequency of the air conditioner compressor is acquired, and the system pressure during the operation of the air conditioner compressor is monitored.
In the embodiment of the disclosure, the operating frequency of the air conditioner compressor can be measured by, but not limited to, a method for measuring the rotation speed of the compressor, a method for measuring the frequency of the input power of the compressor end by a universal meter, an oscilloscope test method and the like.
In the disclosed embodiments, the system pressure may be measured by a high pressure valve in the air conditioner.
In step S12, the air conditioner compressor operation frequency is controlled according to the operation frequency and the system pressure.
According to the method for controlling the operating frequency of the air conditioner compressor, whether the current air conditioner system operates at a higher frequency or a lower frequency and whether the system pressure of the current air conditioner system, namely, the system load, is higher or not are judged through the measured operating frequency and the system pressure of the air conditioner compressor. And controlling the operation frequency of the current air conditioning system according to the operation frequency of the current air conditioning system and the system load so as to achieve the purpose of finely controlling the system frequency.
The following embodiments of the present disclosure further explain and illustrate the method of controlling the operating frequency of the air conditioner compressor in the above embodiments of the present disclosure.
Fig. 2 is a flowchart illustrating a method of controlling an operating frequency of an air conditioner compressor according to an exemplary embodiment, and the method of controlling an operating frequency of an air conditioner compressor, as shown in fig. 2, includes the following steps.
In step S21, a preset pressure change time threshold is acquired.
In the embodiment of the disclosure, a pressure change time threshold is preset. The pressure change time threshold is used for measuring the system pressure once every time the change time threshold passes, so that the purpose of measuring the pressure change is achieved. Therefore, the pressure change time threshold may be a short period of time, for example, twenty seconds.
In step S22, the system pressure at the end of each cycle of the air conditioner compressor is periodically monitored with the pressure change time threshold as a cycle.
In the disclosed embodiments, for example, the pressure change time threshold is twenty seconds, and the system pressure of the air conditioner compressor is periodically monitored and recorded every twenty seconds.
In step S23, a system pressure change rate is determined based on the pressure change time threshold and the system pressure monitored in the adjacent cycle.
In the embodiment of the disclosure, for example, the pressure change time threshold may be twenty seconds, the system pressure monitored at twenty seconds may be 2 mpa, the system pressure monitored at forty seconds is 4 mpa, the current system pressure change rate is the difference between the system pressure monitored at forty seconds and the system pressure monitored at twenty seconds, and the pressure change time threshold: a ratio of twenty seconds. The current system pressure change rate results in 0.1 megapascals per second.
In step S24, the air conditioner compressor operating frequency is controlled according to the operating frequency, the system pressure, and the system pressure change rate.
In the embodiment of the disclosure, whether the current air conditioner compressor is in high-frequency operation or low-frequency operation can be judged through the operation frequency and the frequency stay threshold value. Different pressure control thresholds are obtained through the operating frequency of the air conditioner compressor. The system pressure change rate may be derived based on the pressure change time threshold and the system pressure monitored in adjacent cycles. The system load and the system load change condition of the current system operating frequency at the frequency retention threshold value can be judged through the system pressure and the system pressure change rate. The system load is the system pressure, and the system load change condition is the system pressure change rate. And controlling the running frequency of the air conditioner compressor according to the system load and the system load change condition.
The following embodiments of the present disclosure further explain and illustrate the method of controlling the operating frequency of the air conditioner compressor in the above embodiments of the present disclosure.
Fig. 3 is a flowchart illustrating a method of controlling an operating frequency of an air conditioner compressor according to an operating frequency, a system pressure, and a system pressure change rate, and the method of controlling an operating frequency of an air conditioner compressor according to an operating frequency, a system pressure, and a system pressure change rate, as shown in fig. 3, includes the following steps.
In step S31, from among a plurality of preset frequency retention thresholds, it is determined that the operating frequency reaches the target frequency retention threshold, and then the current system pressure that is currently monitored and the current system pressure change rate are determined.
In the embodiment of the disclosure, the frequency dwell threshold may be a plurality of different preset frequency dwell thresholds. For example, the frequency dwell thresholds may be 30 hertz and 58 hertz. Namely, when the running frequency of the air conditioner compressor is smaller than 30 Hz, detecting the system pressure and the system pressure change rate in the running process of the current air conditioner compressor. And when the operating frequency of the air conditioner compressor is larger than 30 Hz and smaller than 58 Hz, detecting the system pressure and the system pressure change rate in the current operation process of the air conditioner compressor. And when the operating frequency of the air conditioner compressor is greater than 58 Hz, detecting the system pressure and the system pressure change rate in the current operating process of the air conditioner compressor.
In step S32, the air conditioner compressor operating frequency is controlled to maintain the target frequency dwell threshold value for the target dwell time according to the current system pressure and the current system pressure change rate.
In the embodiment of the disclosure, whether the current system load rises higher and the load change is faster is judged according to different current system pressures and current system pressure change rates of the air conditioner compressors. And controlling the target residence time of the air conditioner compressor at the target frequency residence threshold value by judging the current system load and load change.
The following embodiments of the present disclosure further explain and illustrate the method of controlling the operating frequency of the air conditioner compressor to maintain the target frequency dwell threshold value for the target dwell time in the above embodiments of the present disclosure.
FIG. 4 is a flowchart illustrating a method of controlling an air conditioner compressor operating frequency to maintain a target frequency residence threshold within a target residence time according to a current system pressure and a current system pressure change rate, as shown in FIG. 4, the method of controlling an air conditioner compressor operating frequency to maintain a target frequency residence threshold within a target residence time according to a current system pressure and a current system pressure change rate, comprising the following steps.
In step S41, if the current system pressure is greater than the pressure control threshold and the current system pressure change rate is greater than the pressure change rate threshold, the air conditioner compressor operating frequency is controlled to maintain the target frequency dwell threshold for the first target dwell time.
In the embodiment of the disclosure, the relation between the system pressure and the pressure control threshold value, and the relation between the system pressure change rate and the pressure change rate threshold value are judged. If the system pressure is greater than the pressure control threshold and the system pressure change rate is greater than the pressure change rate threshold, judging that the current system load rises higher and the load change is faster. The air conditioner compressor operating frequency is controlled to maintain the target frequency dwell threshold for a longer dwell time.
In the disclosed embodiments, for example, the current system operates at a frequency of 30 hertz, a pressure of 5 megapascals, and a system pressure change rate of 0.1 megapascals per second. The preset frequency dwell threshold was 30 hertz, the pressure change rate threshold was 2.2 megapascals, and the preset pressure change rate threshold was 0.07 megapascals per second. The current system pressure is larger than the pressure control threshold value, and the current system pressure change rate is larger than the pressure change rate threshold value, so that the current system load can be judged to be higher and the load change is faster. The air conditioning compressor is controlled to maintain 30 hz for a first dwell time. Wherein the first residence time may be 90 seconds.
In step S42, if the current system pressure is less than or equal to the pressure control threshold and/or the current system pressure rate of change is less than or equal to the pressure rate of change threshold, the air conditioning compressor operating frequency is controlled to maintain the target frequency dwell threshold for a second target dwell time.
In the embodiment of the disclosure, the relation between the system pressure and the pressure control threshold value, and the relation between the system pressure change rate and the pressure change rate threshold value are judged. If the system pressure is less than or equal to the pressure control threshold and/or the system pressure change rate is less than or equal to the pressure change rate threshold, then it is determined that the current system load is rising in the threshold control range and the load change is not rapid. The air conditioner compressor operating frequency is controlled to maintain the target frequency dwell threshold for a short dwell time.
In the disclosed embodiments, for example, the current system operates at a frequency of 30 hertz, a pressure of 5 megapascals, and a system pressure change rate of 0.1 megapascals per second. The preset frequency dwell threshold was 30 hertz, the pressure change rate threshold was 5.5 megapascals, and the preset pressure change rate threshold was 0.2 megapascals per second. The current system pressure is smaller than the pressure control threshold value, and the current system pressure change rate is smaller than the pressure change rate threshold value, so that the current system load can be judged to be not high and the load is not fast to change. The air conditioning compressor is controlled to maintain 30 hz for a second dwell time. Wherein the second residence time may be 60 seconds.
In the embodiment of the disclosure, when the system pressure is greater than the pressure control threshold and the system pressure change rate is greater than the pressure change rate threshold, the system pressure is greater and the system pressure change rate is faster, corresponding to the first residence time. When the system pressure is smaller than or equal to the pressure control threshold and the system pressure change rate is smaller than or equal to the pressure change rate threshold, the system pressure is smaller, the system pressure change rate is slower to change, and the second residence time is correspondingly reserved. The first residence time is also longer than the second residence time.
The following examples of the present disclosure further illustrate and describe the method of determining the target frequency dwell threshold reached by the operating frequency in the above-described examples of the present disclosure.
FIG. 5 is a flowchart illustrating a method of determining a target frequency dwell threshold for an operating frequency to reach among a preset plurality of frequency dwell thresholds, as shown in FIG. 5, the method of determining a target frequency dwell threshold for an operating frequency to reach among a preset plurality of frequency dwell thresholds, including the following steps.
In step S51, in response to the operating frequency not reaching the first frequency dwell threshold, the first frequency dwell threshold is taken as the target frequency dwell threshold.
In an embodiment of the present disclosure, a plurality of frequency dwell thresholds are preset, where the first frequency dwell threshold is less than the second frequency dwell threshold. For example, when the first frequency retention threshold is preset to 30 hz and the air conditioner compressor operating frequency is 20 hz, the air conditioner compressor operating frequency does not reach the first frequency retention threshold, and the first frequency retention threshold is set as the target frequency retention threshold, that is, 30 hz is set as the target retention threshold.
In step S52, in response to the operating frequency reaching the first frequency dwell threshold and the operating frequency not reaching the second frequency dwell threshold, the second frequency dwell threshold is taken as the target frequency dwell threshold.
In the embodiment of the disclosure, for example, when the first frequency retention threshold is preset to 30 hz, the second frequency retention threshold is preset to 58 hz, and the operating frequency of the air conditioner compressor is 40 hz, the operating frequency of the air conditioner compressor reaches the first frequency retention threshold, and does not reach the second frequency retention threshold. The second frequency dwell threshold is taken as the target frequency dwell threshold, i.e. 58 hz is taken as the target dwell threshold.
In step S53, if the operating frequency reaches the second frequency retention threshold, the operation is performed according to the operating frequency.
In the embodiment of the disclosure, for example, when the two-frequency stay threshold is preset to 58 hz and the operating frequency of the air conditioner compressor is 60 hz, the current operating frequency of the air conditioner compressor is operated. I.e. still continue to operate at the 60 hz operating frequency.
The following description will take an air conditioner as an example, and illustrates an air conditioner compressor operation frequency control method, an air conditioner compressor residence time, a frequency and practical applications according to the above embodiments of the present disclosure.
Fig. 6 is a schematic diagram illustrating an air conditioner compressor operation frequency control method according to an exemplary embodiment.
In the embodiment of the disclosure, the pressure change time threshold value is 20 seconds, the frequency retention threshold value 1 is 30 hertz, the frequency retention threshold value 2 is 58 hertz, the pressure control threshold value 1 is 2.2 megapascals, the pressure control threshold value 2 is 3 megapascals, the pressure change rate threshold value 1 is 0.07 megapascals per second, the pressure change rate threshold value 2 is 0.04 megapascals per second, the retention time threshold value 1 is 90 seconds, the retention time threshold value 2 is 60 seconds, the retention time threshold value 3 is 150 seconds, and the retention time threshold value 4 is 120 seconds.
In the embodiment of the disclosure, the operating frequency and the system pressure of the air conditioner compressor are obtained in response to the start-up operation of the air conditioner, wherein the system pressure can be measured through a high-pressure valve in the air conditioner. The system pressure was recorded once every 20 seconds of the interval pressure change time threshold.
Wherein the system pressure is recorded as pressure n, where n may be a positive integer greater than or equal to 2. The pressure change rate is the ratio of the recorded difference between two consecutive pressures to the pressure change time, 20 seconds.
In the embodiment of the disclosure, if the current operating frequency of the air conditioner compressor is 20 hz and is smaller than 30 hz preset by the frequency retention threshold 1, the magnitude relation between the current system pressure and the pressure control threshold and between the system pressure change rate and the pressure change rate threshold is judged. If the current system pressure is 3mpa and the system pressure change rate is 0.1 mpa per second, i.e., 2.2 mpa greater than the pressure control threshold 1 and 0.07 mpa per second greater than the pressure change rate threshold 1. The operating frequency of the air conditioner compressor stays at the current frequency at a stay threshold value 1, namely 30 Hz, and the stay time at the stay threshold value 1 is 90 seconds.
In the disclosed embodiments, if the current system pressure is 2 megapascals, and/or the system pressure change rate is 0.05 megapascals per second, i.e., 2.2 megapascals less than the pressure control threshold 1, and/or 0.07 megapascals per second less than the pressure change rate threshold 1. The air conditioner compressor operating frequency stays at the current frequency at a threshold value of 1, namely 30 hertz, and stays at a threshold value of 2, namely 60 seconds.
In the embodiment of the disclosure, if the current operating frequency of the air-conditioning compressor is 40 hz, which is greater than 30 hz preset by the frequency retention threshold 1 and less than 58 hz preset by the frequency retention threshold 2, the magnitude relation between the current system pressure and the pressure control threshold and between the system pressure change rate and the pressure change rate threshold is determined. If the current system pressure is 4mpa and the system pressure change rate is 0.05 mpa per second, i.e., 3 mpa greater than the pressure control threshold 2 and 0.04 mpa per second greater than the pressure change rate threshold 2. The air conditioner compressor operating frequency stays at the current frequency at a threshold value of 2, namely 58 hertz, and stays at a threshold value of 3, namely 150 seconds.
In the disclosed embodiments, if the current system pressure is 2.5 megapascals, and/or the system pressure change rate is 0.02 megapascals per second, i.e., 3 megapascals less than the pressure control threshold 2, and/or 0.04 megapascals per second less than the pressure change rate threshold 2. The air conditioner compressor operating frequency stays at the current frequency at a threshold value of 2, namely 58 hertz, and stays at a threshold value of 4, namely 120 seconds.
Based on the same conception, the embodiment of the disclosure also provides an air conditioner compressor operation frequency control device.
It can be appreciated that, in order to achieve the above-mentioned functions, the air conditioner compressor operation frequency control device provided in the embodiments of the present disclosure includes a hardware structure and/or a software module that perform respective functions. The disclosed embodiments may be implemented in hardware or a combination of hardware and computer software, in combination with the various example elements and algorithm steps disclosed in the embodiments of the disclosure. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present disclosure.
Fig. 7 is a block diagram illustrating an air conditioner compressor operating frequency control device according to an exemplary embodiment. Referring to fig. 7, the apparatus includes an acquisition unit 101 and a control unit 102.
The acquisition unit 101 is used for acquiring the operation frequency of the air conditioner compressor and monitoring the system pressure during the operation of the air conditioner compressor.
The control unit 102 is configured to control an operation frequency of the air conditioner compressor according to the operation frequency and the system pressure.
In one embodiment, the acquisition unit 101 monitors the system pressure during operation of the air conditioner compressor as follows: acquiring a preset pressure change time threshold; taking the pressure change time threshold value as a period, and periodically monitoring the system pressure at the end of each period of the air conditioner compressor; the control unit controls the operation frequency of the air conditioner compressor according to the operation frequency and the system pressure in the following manner: determining a system pressure change rate based on the pressure change time threshold and the system pressure monitored in adjacent cycles; and controlling the operating frequency of the air conditioner compressor according to the operating frequency, the system pressure and the system pressure change rate.
In another embodiment, the control unit 102 controls the air conditioner compressor operating frequency according to the operating frequency, the system pressure, and the system pressure change rate in the following manner: determining a target frequency stay threshold value reached by the operating frequency in a plurality of preset frequency stay threshold values, and determining the current monitored system pressure and the current system pressure change rate; and controlling the running frequency of the air conditioner compressor to maintain a target frequency stay threshold value in the target stay time according to the current system pressure and the current system pressure change rate.
In another embodiment, the control unit 102 controls the air conditioner compressor operating frequency to maintain the target frequency dwell threshold for the target dwell time according to the current system pressure and the current system pressure change rate in the following manner: if the current system pressure is greater than the pressure control threshold and the current system pressure change rate is greater than the pressure change rate threshold, controlling the running frequency of the air conditioner compressor to keep the target frequency retention threshold within the first target retention time; if the current system pressure is less than or equal to the pressure control threshold value and/or the current system pressure change rate is less than or equal to the pressure change rate threshold value, controlling the running frequency of the air conditioner compressor to keep the target frequency retention threshold value within the second target retention time; the first target residence time is greater than the second target residence time.
In another embodiment, the control unit 102 determines the target frequency dwell threshold reached by the operating frequency among the preset plurality of frequency dwell thresholds in the following manner: in response to the operating frequency not reaching the first frequency dwell threshold, taking the first frequency dwell threshold as a target frequency dwell threshold; in response to the operating frequency reaching the first frequency dwell threshold and the operating frequency not reaching the second frequency dwell threshold, taking the second frequency dwell threshold as a target frequency dwell threshold; the first frequency dwell threshold and the second frequency dwell threshold are two frequency dwell thresholds with the smallest difference value in a plurality of preset frequency dwell thresholds, and the first frequency dwell threshold is smaller than the second frequency dwell threshold.
In another embodiment, the device control unit 102 is further configured to: and when the operating frequency reaches the second frequency stay threshold value, operating according to the operating frequency.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 8 is a block diagram illustrating an apparatus 200 for controlling an operating frequency of an air conditioner compressor according to an exemplary embodiment. For example, apparatus 200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.
Referring to fig. 8, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the apparatus 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interactions between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the apparatus 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 204 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power component 206 provides power to the various components of the device 200. The power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 200.
The multimedia component 208 includes a screen between the device 200 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front-facing camera and/or a rear-facing camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 200 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 210 is configured to output and/or input audio signals. For example, the audio component 210 includes a Microphone (MIC) configured to receive external audio signals when the device 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 further includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing assembly 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 214 includes one or more sensors for providing status assessment of various aspects of the apparatus 200. For example, the sensor assembly 214 may detect the on/off state of the device 200, the relative positioning of the components, such as the display and keypad of the device 200, the sensor assembly 214 may also detect a change in position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate communication between the apparatus 200 and other devices in a wired or wireless manner. The device 200 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 204, including instructions executable by processor 220 of apparatus 200 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
It is understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It is further understood that the terms "first," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the expressions "first", "second", etc. may be used entirely interchangeably. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that "connected" includes both direct connection where no other member is present and indirect connection where other element is present, unless specifically stated otherwise.
It will be further understood that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.
Claims (7)
1. An air conditioner compressor operating frequency control method, comprising:
Acquiring the operating frequency of an air conditioner compressor in the frequency rising process of the air conditioner compressor, monitoring the system pressure in the operating process of the air conditioner compressor, and determining the system pressure change rate;
Controlling the operating frequency of the air conditioner compressor according to the operating frequency, the system pressure and the system pressure change rate so as to control the operating frequency of the air conditioner compressor to maintain a target frequency retention threshold value within a target retention time;
Wherein the controlling the operating frequency of the air conditioner compressor according to the operating frequency, the system pressure and the system pressure change rate includes:
Determining a target frequency stay threshold value reached by the operating frequency in a plurality of preset frequency stay threshold values, and determining the current monitored system pressure and the current system pressure change rate;
controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold value within the target stay time according to the current system pressure and the current system pressure change rate;
the controlling the operating frequency of the air conditioner compressor to maintain the target frequency stay threshold value within the target stay time according to the current system pressure and the current system pressure change rate comprises the following steps:
If the current system pressure is greater than the pressure control threshold and the current system pressure change rate is greater than the pressure change rate threshold, controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold within a first target stay time;
If the current system pressure is smaller than or equal to the pressure control threshold value and/or the current system pressure change rate is smaller than or equal to the pressure change rate threshold value, controlling the running frequency of the air conditioner compressor to keep the target frequency stay threshold value within a second target stay time;
The first target residence time is greater than the second target residence time.
2. The method of claim 1, wherein monitoring system pressure during operation of the air conditioner compressor comprises:
acquiring a preset pressure change time threshold;
periodically monitoring the system pressure at the end of each cycle of the air conditioner compressor by taking the pressure change time threshold as a cycle;
the determining a rate of change of system pressure comprises:
A system pressure change rate is determined based on the pressure change time threshold and the system pressure monitored in adjacent cycles.
3. The method of claim 1, wherein determining a target frequency dwell threshold reached by the operating frequency among a preset plurality of frequency dwell thresholds comprises:
In response to the operating frequency not reaching a first frequency dwell threshold, taking the first frequency dwell threshold as a target frequency dwell threshold;
In response to the operating frequency reaching a first frequency dwell threshold and the operating frequency not reaching a second frequency dwell threshold, taking the second frequency dwell threshold as a target frequency dwell threshold;
The first frequency retention threshold and the second frequency retention threshold are two frequency retention thresholds with the smallest difference value among a plurality of preset frequency retention thresholds, and the first frequency retention threshold is smaller than the second frequency retention threshold.
4. A method according to claim 3, characterized in that the method further comprises:
and if the operating frequency reaches the second frequency stay threshold value, operating according to the operating frequency.
5. An air conditioner compressor operating frequency control apparatus for performing the control method of any one of claims 1 to 4, said apparatus comprising:
The device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the operating frequency of the air conditioner compressor in the frequency rising process of the air conditioner compressor, monitoring the system pressure in the operating process of the air conditioner compressor and determining the change rate of the system pressure;
And the control unit is used for controlling the operating frequency of the air conditioner compressor according to the operating frequency, the system pressure and the system pressure change rate so as to control the operating frequency of the air conditioner compressor to maintain a target frequency residence threshold value within a target residence time, wherein different system pressures and system pressure change rates correspond to different system residence times.
6. An air conditioner compressor operating frequency control device, comprising:
A processor;
A memory for storing processor-executable instructions;
Wherein the processor is configured to: a method for performing the air conditioner compressor operating frequency control of any one of claims 1 to 4.
7. A storage medium having instructions stored therein which, when executed by a processor of a terminal, enable the terminal including the processor to perform the method of air conditioner compressor operating frequency control of any one of claims 1 to 4.
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