CN111561768A - Operation control method of air conditioner, air conditioner and readable storage medium - Google Patents
Operation control method of air conditioner, air conditioner and readable storage medium Download PDFInfo
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- CN111561768A CN111561768A CN202010370964.0A CN202010370964A CN111561768A CN 111561768 A CN111561768 A CN 111561768A CN 202010370964 A CN202010370964 A CN 202010370964A CN 111561768 A CN111561768 A CN 111561768A
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Abstract
The invention provides an operation control method of air conditioning equipment, the air conditioning equipment and a readable storage medium, wherein the operation control method of the air conditioning equipment comprises the following steps: receiving a starting-up instruction, and determining a target operation frequency according to the starting-up instruction; and controlling the compressor to work at a preset frequency, acquiring the superheat degree and the intake pressure of the compressor, and controlling the operating frequency of the compressor to be increased from the preset frequency to a target operating frequency according to the superheat degree and the intake pressure. The operation frequency of the compressor is controlled to be increased according to the superheat degree and the air inlet pressure of the compressor, so that the frequency of the compressor can be dynamically increased according to the real-time operation condition, the operation frequency of the compressor can be rapidly increased within the range allowed by the operation condition, the air conditioning equipment can rapidly respond to the actual refrigeration or heating requirement, and the user experience is effectively improved.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an operation control method of the air conditioning equipment, the air conditioning equipment and a computer readable storage medium.
Background
In the related art, for an air conditioner having an inverter compressor, after the air conditioner is turned on, the compressor needs to increase the operating frequency to a desired operating frequency. The existing frequency raising mode raises the frequency at a fixed speed, does not consider the actual operation condition of the compressor, and causes slow frequency raising and poor user experience.
Therefore, a technical solution capable of dynamically increasing the frequency according to the operation condition of the air conditioner is needed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention proposes an operation control method of an air conditioning apparatus.
A second aspect of the present invention proposes an air conditioning apparatus.
A third aspect of the invention proposes a computer-readable storage medium.
In view of the above, a first aspect of the present invention provides an operation control method of an air conditioning apparatus, including: receiving a starting-up instruction, and determining a target operation frequency according to the starting-up instruction; and controlling the compressor to work at a preset frequency, acquiring the superheat degree and the intake pressure of the compressor, and controlling the operating frequency of the compressor to be increased from the preset frequency to a target operating frequency according to the superheat degree and the intake pressure.
According to the technical scheme, after the air conditioning equipment receives a starting instruction, the target running frequency required to be reached by the compressor is determined, and the compressor is controlled to work at a lower preset frequency. The preset frequency is a minimum platform value, and the preset frequency value can be determined according to the hardware performance of the compressor or calibrated according to the actual operating environment.
After the compressor operates at the preset frequency, the air conditioning equipment acquires the superheat degree and the intake pressure of the compressor. The superheat degree and the air inlet pressure can accurately reflect the real-time working condition of the compressor, the compressor is controlled to increase the operating frequency according to the superheat degree and the air inlet pressure of the compressor, the compressor is specifically increased to the target operating frequency required by work through the preset frequency, the compressor can dynamically increase the frequency according to the real-time operating condition, the compressor can rapidly increase the operating frequency within the range allowed by the working condition, the air conditioning equipment can rapidly respond to the actual refrigeration or heating requirement, and the user experience is effectively improved.
In addition, the operation control method of the air conditioning equipment in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, the step of controlling the operating frequency of the compressor from the preset frequency to the target operating frequency according to the superheat degree and the intake pressure specifically includes: determining that the degree of superheat is greater than or equal to a degree of superheat threshold value and the intake pressure is greater than an intake pressure threshold value, and determining a target frequency increasing rate; and controlling the compressor to increase the operating frequency at the target frequency increasing rate until the operating frequency of the compressor reaches the target operating frequency.
In the technical scheme, if the superheat degree of the compressor is determined to be larger than or equal to the superheat degree threshold value and the air inlet pressure of the compressor is determined to be larger than or equal to the air inlet pressure threshold value, the current operation condition of the compressor can be determined to be relatively stable. And determining a target frequency increasing rate, and controlling the compressor to increase the running speed according to the target frequency increasing rate until the running frequency of the compressor reaches the target running frequency. The target frequency raising rate is the maximum frequency raising rate which can stably raise the running frequency of the compressor under a relatively ideal working condition, and the target frequency raising rate can be determined according to the hardware performance of the compressor or specifically set according to the actual application environment of the air conditioning equipment.
Whether the compressor is in a relatively ideal working condition or not is determined through the superheat degree and the air inlet pressure of the compressor, and when the working condition of the compressor is stable, the operation frequency of the compressor is controlled to be increased at a high rate, so that the operation frequency of the compressor can reach a target operation frequency quickly, and the air conditioning equipment can quickly respond to actual working requirements.
In any of the above technical solutions, the step of controlling the operating frequency of the compressor from a preset frequency to a target operating frequency according to the superheat degree and the intake pressure further includes: determining that the superheat degree is smaller than a superheat degree threshold value and the intake pressure is larger than an intake pressure threshold value, and acquiring a preset frequency sequence; sequentially selecting platform frequencies in a preset frequency sequence according to the sequence of the frequency values from low to high; and controlling the running frequency value of the compressor to be sequentially increased to the corresponding platform frequency at the target frequency increasing rate until the running frequency of the compressor reaches the target running frequency.
In the technical scheme, if the superheat degree is determined to be smaller than the superheat degree threshold value and the intake pressure is determined to be larger than the intake pressure threshold value, the compressor is indicated to be operated under relatively poor working conditions. At the moment, a preset frequency sequence is obtained, the platform frequencies in the preset frequency sequence are sequentially selected according to the sequence of the frequency values from low to high, the compressor is controlled to increase the running frequency at a target frequency increasing rate, and the compressor is sequentially increased to the corresponding target platform frequencies according to the sequence, namely, the frequency is increased in a step-up mode until the running frequency reaches the target running frequency.
Through when compressor operating mode is unsatisfactory to the operating frequency of compressor is progressively promoted to the mode of "going up the ladder", can ensure the operation of compressor stable on the one hand, and on the other hand can improve the frequency promotion efficiency of compressor under the prerequisite that does not influence the reliability, and then makes air conditioning equipment can the actual work demand of quick response.
In any of the above technical solutions, the preset frequency sequence includes a plurality of preset platform frequencies, and any one of the platform frequencies is greater than the preset frequency.
In the technical scheme, the preset frequency sequence comprises a plurality of preset platform frequencies, wherein each platform frequency corresponds to a step, so that the running frequency of the compressor can be stably increased on the premise of stable running. Meanwhile, all the platform frequencies in the preset frequency sequence are greater than the preset frequency, namely the preset frequency is the lowest platform, and the compressor can increase the frequency in a mode of going up steps by taking the preset frequency as a starting point.
It will be appreciated that a plurality of platform frequencies in the predetermined sequence are each less than the maximum operating frequency of the compressor to ensure stable operation of the compressor.
In any of the above technical solutions, the step of controlling the compressor to sequentially increase to the corresponding platform frequency at the target increasing rate specifically includes: selecting a first platform frequency from a preset frequency sequence; controlling the running frequency of the compressor to be increased to a first platform frequency at a target frequency increasing rate, and acquiring a first running duration of the compressor under the first platform frequency; determining that the first operation time length is equal to a preset time length, selecting a second platform frequency according to a sequence corresponding to a preset frequency sequence, and controlling the operation frequency of the compressor to be increased to the second platform frequency at a target frequency increasing rate; the second platform frequency is greater than the first platform frequency, and the second platform frequency is less than any other platform frequency in the preset frequency sequence.
In the technical scheme, when the compressor is controlled to increase the frequency in a 'step-up' manner, a first platform frequency is selected from a preset frequency sequence, wherein the first platform frequency is a platform frequency closest to the current operating frequency of the compressor, and the first platform frequency is greater than the current operating frequency of the compressor.
After the compressor is controlled to increase the frequency value of the first platform, the compressor is controlled to keep the first platform frequency running unchanged within a preset time, and when the running time of the compressor at the first platform frequency reaches the preset time, the second platform frequency is further selected, and the compressor is controlled to continue to increase the frequency value of the second platform frequency. The second platform frequency is a platform frequency which is greater than the first platform frequency and is closest to the first platform frequency in the preset frequency sequence.
In any of the above technical solutions, the operation control method of the air conditioning equipment further includes: and determining that the air inlet pressure is less than or equal to an air inlet pressure threshold value, recording the corresponding comparison operation frequency and the comparison air inlet pressure of the compressor, and controlling the operation frequency of the compressor to be maintained at the comparison operation frequency within a preset time length.
In the technical scheme, at any moment, if the fact that the air inlet pressure is smaller than or equal to the air inlet pressure threshold value is determined, the compressor is immediately controlled to stop increasing the frequency, the current operation frequency is maintained unchanged, meanwhile, the current operation frequency of the compressor is recorded as a comparison operation frequency, and the current air inlet pressure of the compressor is recorded as a comparison air inlet pressure.
If the air inlet pressure is smaller than the air inlet pressure threshold value, the situation that the operation frequency is continuously increased to cause unstable operation of the compressor is shown, at the moment, the operation frequency is maintained within a preset time period, and after the working condition of the engine is relatively stable, the frequency control operation of the compressor is continuously executed, so that the operation stability of the compressor can be ensured, and the reliability of the air conditioning equipment is improved.
In any of the above technical solutions, after the step of controlling the operation frequency of the compressor to be maintained at the reference operation frequency within the preset time period, the operation control method further includes: determining that the air inlet pressure is smaller than the contrast air inlet pressure, and controlling the running frequency of the compressor to reduce a preset frequency reduction value; and determining that the intake pressure is greater than or equal to a comparison intake pressure value, and controlling the operating frequency of the compressor to be increased to a target operating frequency from a comparison preset frequency according to the superheat degree and the intake pressure.
In the technical scheme, after the compressor is controlled to stop increasing the frequency and is maintained at the current operation frequency, namely, the compressor operates for a preset time period in comparison with the operation frequency, the current air inlet pressure of the compressor is continuously obtained. If the air inlet pressure is smaller than the contrast air inlet pressure, the air inlet pressure of the compressor is further reduced, the working condition of the engine is unstable, and at the moment, the compressor is controlled to reduce the running frequency, specifically, the preset frequency reduction value is reduced on the basis of the current running frequency, so that the running stability of the compressor is ensured.
If the inlet pressure of the compressor is larger than or equal to the comparison inlet pressure value at the moment, the operation of the compressor is recovered to be stable, and the step of controlling the lifting frequency of the compressor according to the superheat degree and the inlet pressure is executed again until the operation frequency of the compressor reaches the target operation frequency.
A second aspect of the present invention provides an air conditioning apparatus including a compressor; the detection device is connected with the compressor and is configured to acquire the superheat degree and the intake pressure of the compressor; a memory configured to store a computer program; a processor configured to execute a computer program to implement the operation control method of the air conditioning apparatus provided in any one of the above-described technical solutions.
In the technical scheme, the real-time working condition of the compressor is detected through the detection device, specifically, the superheat degree of the compressor and the air inlet pressure of the compressor are obtained, and the compressor is controlled to correspondingly improve the running frequency according to the superheat degree and the air inlet pressure. Meanwhile, the air conditioning equipment comprises a processor which can execute a computer program stored in a memory to realize the operation control method of the air conditioning equipment provided in any one of the above technical solutions, and therefore, the air conditioning equipment further comprises all the beneficial effects of the operation control method of the air conditioning equipment provided in any one of the above technical solutions, which are not described herein again.
In the above technical solution, the air conditioning apparatus further includes: the first end of the condenser is connected with an exhaust port of the compressor; the first end of the evaporator is connected with the second end of the condenser, and the second end of the evaporator is connected with the air inlet of the compressor; and the throttling device is arranged on the refrigerant pipeline between the evaporator and the condenser and is configured to adjust the refrigerant flow in the refrigerant pipeline.
In the technical scheme, the condenser, the compressor and the evaporator are sequentially connected to form a closed refrigerant loop. The high-temperature and high-pressure refrigerant compressed by the compressor enters the condenser, is condensed and released heat in the condenser, then enters the evaporator for evaporation after being throttled by the throttling device, absorbs heat, and realizes the 'transportation' of the heat from the evaporator side to the condenser side through the circulation of the refrigerant, thereby realizing the refrigeration or heating of the heat pump.
A third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the operation control method for an air conditioning device provided in any one of the above technical solutions, and therefore, the computer-readable storage medium includes all the beneficial effects of the operation control method for an air conditioning device provided in any one of the above technical solutions, which are not described herein again.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart illustrating an operation control method of an air conditioner according to an embodiment of the present invention;
fig. 2 illustrates another flowchart of an operation control method of an air conditioner according to an embodiment of the present invention;
fig. 3 illustrates still another flowchart of an operation control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is still another flowchart illustrating an operation control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is still another flowchart illustrating an operation control method of an air conditioner according to an embodiment of the present invention;
fig. 6 is still another flowchart illustrating an operation control method of an air conditioner according to an embodiment of the present invention;
fig. 7 is still another flowchart illustrating an operation control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An operation control method of an air conditioner, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 7.
Example one
As shown in fig. 1, in one embodiment of the present invention, there is provided an operation control method of an air conditioning apparatus, including:
step S102, receiving a starting-up instruction, and determining a target operation frequency according to the starting-up instruction;
and step S104, controlling the compressor to work at a preset frequency, acquiring the superheat degree and the intake pressure of the compressor, and controlling the operating frequency of the compressor to be increased to a target operating frequency from the preset frequency according to the superheat degree and the intake pressure.
In step S104, the step of controlling the operating frequency of the compressor to be increased from the preset frequency to the target operating frequency according to the superheat degree and the intake pressure specifically includes, as shown in fig. 2:
step S202, determining that the degree of superheat is larger than or equal to a degree of superheat threshold value, and the intake pressure is larger than an intake pressure threshold value, and determining a target frequency increasing rate;
and step S204, controlling the compressor to increase the running frequency at the target frequency increasing rate until the running frequency of the compressor reaches the target running frequency.
In step S202, if it is determined that the degree of superheat of the compressor is greater than or equal to the degree of superheat threshold value and the intake pressure of the compressor is greater than or equal to the intake pressure threshold value, it may be determined that the current operating condition of the compressor is relatively stable. At this time, the target frequency-increasing rate is determined, and step S204 is executed to control the compressor to increase the operation speed according to the target frequency-increasing rate until the operation frequency of the compressor reaches the target operation frequency. The target frequency raising rate is the maximum frequency raising rate which can stably raise the running frequency of the compressor under a relatively ideal working condition, and the target frequency raising rate can be determined according to the hardware performance of the compressor or specifically set according to the actual application environment of the air conditioning equipment.
Whether the compressor is in a relatively ideal working condition or not is determined through the superheat degree and the air inlet pressure of the compressor, and when the working condition of the compressor is stable, the operation frequency of the compressor is controlled to be increased at a high rate, so that the operation frequency of the compressor can reach a target operation frequency quickly, and the air conditioning equipment can quickly respond to actual working requirements.
For another case, as shown in fig. 3, the method further includes:
step S302, determining that the superheat degree is smaller than a superheat degree threshold value and the intake pressure is larger than an intake pressure threshold value, and acquiring a preset frequency sequence;
step S304, sequentially selecting platform frequencies in a preset frequency sequence according to the sequence of frequency values from low to high;
and S306, controlling the running frequency value of the compressor to be sequentially increased to the corresponding platform frequency at the target frequency increasing rate until the running frequency of the compressor reaches the target running frequency.
In step S302, if the superheat is determined to be less than the superheat threshold and the intake pressure is greater than the intake pressure threshold, then the compressor is operating in a relatively poor operating condition. Then, step S304 is executed to obtain a preset frequency sequence, sequentially select platform frequencies in the preset frequency sequence according to the sequence of frequency values from low to high, control the compressor to increase the operating frequency at a target frequency increasing rate, and step S306 is executed to sequentially increase the operating frequency to the corresponding target platform frequency in sequence, that is, increase the frequency in a "step-up" manner until the operating frequency reaches the target operating frequency.
Through when compressor operating mode is unsatisfactory to the operating frequency of compressor is progressively promoted to the mode of "going up the ladder", can ensure the operation of compressor stable on the one hand, and on the other hand can improve the frequency promotion efficiency of compressor under the prerequisite that does not influence the reliability, and then makes air conditioning equipment can the actual work demand of quick response.
As shown in fig. 4, the step of controlling the compressor to sequentially increase to the corresponding platform frequency at the target increasing rate specifically includes:
step S402, selecting a first platform frequency from a preset frequency sequence;
step S404, controlling the running frequency of the compressor to increase to a first platform frequency at a target frequency increasing rate, and acquiring a first running duration of the compressor under the first platform frequency;
step S406, determining that the first operation time length is equal to a preset time length, selecting a second platform frequency according to a sequence corresponding to the preset frequency sequence, and controlling the operation frequency of the compressor to be increased to the second platform frequency at a target frequency increasing rate.
The second platform frequency is greater than the first platform frequency, and the second platform frequency is less than any other platform frequency in the preset frequency sequence. The preset frequency sequence comprises a plurality of preset platform frequencies, and any platform frequency in the plurality of platform frequencies is greater than the preset frequency.
When the compressor is controlled to increase the frequency in a 'step-up' mode, a first platform frequency is selected from a preset frequency sequence, the first platform frequency is the platform frequency closest to the current operating frequency of the compressor, and the first platform frequency is greater than the current operating frequency of the compressor.
After the compressor is controlled to increase the frequency value of the first platform, the compressor is controlled to keep the first platform frequency running unchanged within a preset time, and when the running time of the compressor at the first platform frequency reaches the preset time, the second platform frequency is further selected, and the compressor is controlled to continue to increase the frequency value of the second platform frequency. The second platform frequency is a platform frequency which is greater than the first platform frequency and is closest to the first platform frequency in the preset frequency sequence.
Specifically, the preset frequency sequence includes a plurality of preset platform frequencies, where each platform frequency corresponds to a "step" to ensure that the compressor can stably increase the operating frequency on the premise of stable operation. Meanwhile, all the platform frequencies in the preset frequency sequence are greater than the preset frequency, namely the preset frequency is the lowest platform, and the compressor can increase the frequency in a mode of going up steps by taking the preset frequency as a starting point.
It will be appreciated that a plurality of platform frequencies in the predetermined sequence are each less than the maximum operating frequency of the compressor to ensure stable operation of the compressor.
In this embodiment, after the air conditioning equipment receives the start-up instruction, the target operating frequency that the compressor needs to reach is determined, and the compressor is controlled to operate at a lower preset frequency first. The preset frequency is a minimum platform value, and the preset frequency value can be determined according to the hardware performance of the compressor or calibrated according to the actual operating environment.
After the compressor operates at the preset frequency, the air conditioning equipment acquires the superheat degree and the intake pressure of the compressor. The superheat degree and the air inlet pressure can accurately reflect the real-time working condition of the compressor, the compressor is controlled to increase the operating frequency according to the superheat degree and the air inlet pressure of the compressor, the compressor is specifically increased to the target operating frequency required by work through the preset frequency, the compressor can dynamically increase the frequency according to the real-time operating condition, the compressor can rapidly increase the operating frequency within the range allowed by the working condition, the air conditioning equipment can rapidly respond to the actual refrigeration or heating requirement, and the user experience is effectively improved.
Example two
As shown in fig. 5, in an embodiment of the present invention, the operation control method of the air conditioner further includes:
step S502, determining that the air inlet pressure is smaller than or equal to an air inlet pressure threshold value, and recording the comparison operation frequency and the comparison air inlet pressure corresponding to the compressor;
and step S504, controlling the running frequency of the compressor to be maintained at the comparison running frequency within a preset time period.
As shown in fig. 6, after the step of controlling the operation frequency of the compressor to be maintained at the reference operation frequency for the preset time period, the operation control method further includes:
step S602, determining that the air inlet pressure is smaller than the reference air inlet pressure, and controlling the running frequency of the compressor to reduce the preset frequency reduction value;
and step S604, determining that the intake pressure is greater than or equal to a comparison intake pressure value, and controlling the operating frequency of the compressor to be increased from a comparison preset frequency to a target operating frequency according to the superheat degree and the intake pressure.
In this embodiment, at any one time, if it is determined that the intake pressure is less than or equal to the intake pressure threshold, the compressor is immediately controlled to stop the frequency increase and maintain the current operating frequency unchanged, while recording the current operating frequency of the compressor as the comparison operating frequency and recording the current intake pressure of the compressor as the comparison intake pressure.
If the air inlet pressure is smaller than the air inlet pressure threshold value, the situation that the operation frequency is continuously increased to cause unstable operation of the compressor is shown, at the moment, the operation frequency is maintained within a preset time period, and after the working condition of the engine is relatively stable, the frequency control operation of the compressor is continuously executed, so that the operation stability of the compressor can be ensured, and the reliability of the air conditioning equipment is improved.
And continuously acquiring the current air inlet pressure of the compressor after controlling the compressor to stop increasing the frequency and maintaining the current operation frequency, namely operating for a preset time length in comparison with the operation frequency. If the air inlet pressure is smaller than the contrast air inlet pressure, the air inlet pressure of the compressor is further reduced, the working condition of the engine is unstable, and at the moment, the compressor is controlled to reduce the running frequency, specifically, the preset frequency reduction value is reduced on the basis of the current running frequency, so that the running stability of the compressor is ensured.
If the inlet pressure of the compressor is larger than or equal to the comparison inlet pressure value at the moment, the operation of the compressor is recovered to be stable, and the step of controlling the lifting frequency of the compressor according to the superheat degree and the inlet pressure is executed again until the operation frequency of the compressor reaches the target operation frequency.
EXAMPLE III
In an embodiment of the present invention, for a wideband operation compressor, an embodiment of the present invention provides a fast frequency-up adjusting method, which, on the premise of ensuring system reliability, when ensuring the operating range requirement of the compressor and the system reliability, increases the frequency-up rate, so that the system can respond to the user requirement quickly, and improves the user effect.
The specific implementation comprises the following five steps:
(1) and starting the system, and increasing the frequency of the compressor to the lowest platform frequency value fmin, wherein fmin is the preset frequency.
(2) And after the compressor operates for t time at fmin, acquiring the superheat SH and the intake pressure Pe, ensuring that the intake pressure of the system is greater than the minimum limit, namely an intake pressure threshold b, and then judging the sizes of the superheat SH and the superheat threshold a of the system.
And if the superheat degree of the system is more than a, keeping the frequency increasing rate V to be increased to the target frequency, monitoring the changes of SH and Pe at any time, and stopping frequency increasing immediately when SH is determined to be lower than a.
And if the superheat degree of the system is less than a, controlling the running frequency f of the compressor to be lifted by one platform every time, and performing judgment again after delaying t time. The system comprises a plurality of platforms, has the highest platform limit, and monitors the changes of SH and Pe at any time.
(3) And when the intake pressure is lower than b at any time, controlling all the frequency increasing to stop immediately, and judging after waiting for t time.
If the intake pressure continues to decrease, the ratio SH to Pe is compared after the current frequency t is decreased.
And if the system intake pressure is recovered, continuously carrying out frequency increasing judgment according to SH and Pe.
The specific logic flow diagram is shown in fig. 7:
step S702, starting up;
step S704, controlling the running frequency f of the compressor to be increased to fmin;
step S706, comparing SH with a, and comparing Pe with b; if SH is greater than or equal to a and Pe is greater than b, go to step S708; if SH < a and Pe > b, go to step S710; if Pe is less than b, go to step S712;
step S708, raising the frequency to a target frequency ft at a raising rate V; and returns to execute step S706;
step S710, raising the frequency to a platform frequency fp at a raising rate V; and returns to execute step S706;
step S712, stopping the frequency increase, and recording the intake pressure Pe 1;
step S714, judging whether Pe is less than Pe 1; if yes, go to step S716, otherwise return to step S706;
step S716, controlling the operating frequency f to decrease fa; and returns to perform step S706.
Steps S706 to S716 are loop steps, and in the working process of the air conditioner, after step S704, the steps S706 to S706 are performed in a loop until the air conditioner is turned off, and the control flow is ended.
Example four
In one embodiment of the present invention, there is provided an air conditioning apparatus including a compressor; the detection device is connected with the compressor and is configured to acquire the superheat degree and the intake pressure of the compressor; a memory configured to store a computer program; a processor configured to execute a computer program to implement the operation control method of the air conditioning apparatus provided in any one of the embodiments described above.
The first end of the condenser is connected with an exhaust port of the compressor; the first end of the evaporator is connected with the second end of the condenser, and the second end of the evaporator is connected with the air inlet of the compressor; and the throttling device is arranged on the refrigerant pipeline between the evaporator and the condenser and is configured to adjust the refrigerant flow in the refrigerant pipeline.
In the embodiment, the real-time working condition of the compressor is detected through the detection device, specifically, the superheat degree of the compressor and the air inlet pressure of the compressor are obtained, and the compressor is controlled to correspondingly improve the operation frequency according to the superheat degree and the air inlet pressure. Meanwhile, the air conditioning equipment includes a processor capable of executing a computer program stored in a memory to implement the operation control method of the air conditioning equipment provided in any of the above embodiments, and therefore, the air conditioning equipment further includes all the beneficial effects of the operation control method of the air conditioning equipment provided in any of the above embodiments, which are not described herein again.
The condenser, the compressor and the evaporator are connected in sequence to form a closed refrigerant loop. The high-temperature and high-pressure refrigerant compressed by the compressor enters the condenser, is condensed and released heat in the condenser, then enters the evaporator for evaporation after being throttled by the throttling device, absorbs heat, and realizes the 'transportation' of the heat from the evaporator side to the condenser side through the circulation of the refrigerant, thereby realizing the refrigeration or heating of the heat pump.
EXAMPLE five
In an embodiment of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program, when executed by a processor, implements the operation control method of the air conditioning equipment provided in any one of the above embodiments, and therefore, the computer-readable storage medium includes all the beneficial effects of the operation control method of the air conditioning equipment provided in any one of the above embodiments, and is not described herein again.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically defined, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An operation control method of an air conditioning apparatus, characterized by comprising:
receiving a starting-up instruction, and determining a target operation frequency according to the starting-up instruction;
controlling a compressor to work at a preset frequency, acquiring the superheat degree and the intake pressure of the compressor, and controlling the operating frequency of the compressor to be increased from the preset frequency to the target operating frequency according to the superheat degree and the intake pressure.
2. The operation control method of an air conditioning apparatus according to claim 1, wherein the step of controlling the operating frequency of the compressor to be increased from the preset frequency to the target operating frequency according to the superheat degree and the intake pressure specifically comprises:
determining that the degree of superheat is greater than or equal to a degree of superheat threshold value, and the intake pressure is greater than an intake pressure threshold value, and determining a target frequency increasing rate;
and controlling the compressor to increase the operating frequency at the target frequency increasing rate until the operating frequency of the compressor reaches the target operating frequency.
3. The operation control method of an air conditioning apparatus according to claim 2, wherein the step of controlling the operating frequency of the compressor to be increased from the preset frequency to the target operating frequency according to the superheat degree and the intake pressure further comprises:
determining that the degree of superheat is smaller than the degree of superheat threshold value and the intake pressure is larger than an intake pressure threshold value, and acquiring a preset frequency sequence;
sequentially selecting platform frequencies in the preset frequency sequence according to the sequence of the frequency values from low to high;
and controlling the running frequency value of the compressor to be sequentially increased to the corresponding platform frequency at the target frequency increasing rate until the running frequency of the compressor reaches the target running frequency.
4. The operation control method of an air conditioning apparatus according to claim 3, wherein the preset frequency sequence includes a plurality of preset platform frequencies, and any one of the platform frequencies is greater than the preset frequency.
5. The operation control method of an air conditioning apparatus according to claim 3, wherein the step of controlling the compressor to sequentially increase the target increasing frequency rate to the corresponding platform frequency includes:
selecting a first platform frequency from the preset frequency sequence;
controlling the running frequency of the compressor to be increased to the first platform frequency at the target frequency increasing rate, and acquiring a first running duration of the compressor under the first platform frequency;
determining that the first operation time length is equal to a preset time length, selecting a second platform frequency according to the sequence corresponding to the preset frequency sequence, and controlling the operation frequency of the compressor to be increased to the second platform frequency at the target frequency increasing rate;
the second platform frequency is greater than the first platform frequency, and the second platform frequency is less than any other platform frequency in the preset frequency sequence.
6. The operation control method of an air conditioning apparatus according to claim 5, characterized by further comprising:
and determining that the air inlet pressure is less than or equal to the air inlet pressure threshold, recording a comparison operation frequency and a comparison air inlet pressure corresponding to the compressor, and controlling the operation frequency of the compressor to be maintained at the comparison operation frequency within a preset time.
7. The operation control method of an air conditioning apparatus according to claim 6, wherein after the step of controlling the operating frequency of the compressor to be maintained at the control operating frequency for a preset time period, the operation control method further comprises:
determining that the intake pressure is smaller than the comparison intake pressure, and controlling the running frequency of the compressor to reduce a preset frequency reduction value;
and determining that the intake pressure is greater than or equal to the comparison intake pressure value, and controlling the operating frequency of the compressor to be increased from the comparison preset frequency to the target operating frequency according to the superheat degree and the intake pressure.
8. An air conditioning apparatus, characterized by comprising:
a compressor;
the detection device is connected with the compressor and is configured to acquire the superheat degree and the intake pressure of the compressor;
a memory configured to store a computer program;
a processor configured to execute the computer program to implement the operation control method of the air conditioning apparatus according to any one of claims 1 to 7.
9. The air conditioning apparatus as claimed in claim 8, further comprising:
the first end of the condenser is connected with an exhaust port of the compressor;
the first end of the evaporator is connected with the second end of the condenser, and the second end of the evaporator is connected with the air inlet of the compressor;
the throttling device is arranged on a refrigerant pipeline between the evaporator and the condenser and is configured to adjust the refrigerant flow in the refrigerant pipeline.
10. A computer-readable storage medium on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements an operation control method of an air conditioning apparatus according to any one of claims 1 to 7.
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