CN110425704A - A kind of compressor lower frequency limit control method, device and air conditioner - Google Patents
A kind of compressor lower frequency limit control method, device and air conditioner Download PDFInfo
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- CN110425704A CN110425704A CN201910734598.XA CN201910734598A CN110425704A CN 110425704 A CN110425704 A CN 110425704A CN 201910734598 A CN201910734598 A CN 201910734598A CN 110425704 A CN110425704 A CN 110425704A
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- compressor
- phase current
- lower frequency
- frequency limit
- control method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The present invention provides a kind of compressor lower frequency limit control method, device and air conditioners, the compressor lower frequency limit control method includes: to detect the operating parameter of air-conditioning, the minimum operating frequency of compressor is adjusted according to the operating parameter, wherein, the operating parameter includes the phase current of compressor.The compressor lower frequency limit control method can judge the severe duty of compressor by detecting the operating parameter of air-conditioning, and adjust the minimum operating frequency of compressor accordingly when compressor is in severe duty, the running frequency of compressor is avoided to drop to low value, and then compressor is avoided step-out occur, it avoids influencing user experience.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of compressor lower frequency limit control method, device and
Air conditioner.
Background technique
When air conditioner work is under the bad working environments such as high temperature, high pressure, the load of compressor be will increase, if compressor one at this time
It is straight to keep high frequency operation, it will the service life of compressor is shortened in the loss for increasing compressor.In existing air conditioner, pass through inspection
Parameter relevant to air conditioner load is surveyed to detect the heavy duty operating condition of compressor, and is reduced when compressor is in heavy duty operating condition
The running frequency of compressor, to avoid the loss for increasing compressor.But existing air conditioner is not to the minimum operation frequency of compressor
Rate makes limitation, if the running frequency of compressor dropped to low value, easily causes compressor step-out, outdoor unit protectiveness is caused to be stopped
Machine reduces user experience.
It can be seen that user need a kind of running frequency that can solve compressor under severe duty can drop to low value,
The method for easily causing this problem of compressor step-out.
Summary of the invention
Problems solved by the invention is: the running frequency of compressor can drop to low value under severe duty, easily cause pressure
Contracting machine step-out.
To solve the above problems, the present invention provides a kind of compressor lower frequency limit control method, comprising:
The operating parameter for detecting air-conditioning adjusts the minimum operating frequency of compressor according to the operating parameter, wherein described
Operating parameter includes the phase current of compressor.
In this way, can judge the severe duty of compressor by detecting the operating parameter of air-conditioning, working conditions of compressor is sentenced
Disconnected result is accurate；And the minimum operating frequency of compressor can be adjusted accordingly when compressor is in severe duty, it avoids compressing
The running frequency of machine dropped to low value, and then compressor is avoided step-out occur, avoided influencing user experience.
Optionally, the operating parameter of the detection air-conditioning adjusts the minimum operation frequency of compressor according to the operating parameter
Rate, comprising:
Detect the continuous working period of compressor and the external disk tube temperature of air-conditioning；
If the continuous working period meets first condition, according to minimum operating frequency described in the phase current regulation；
If the continuous working period meets second condition, according to the phase current and external disk tube temperature adjusting
Minimum operating frequency.
In this way, can judge the heavily loaded work of compressor by detecting the phase current of compressor in compressor rigid startup stage
Condition avoids the erroneous judgement in compressor rigid startup stage to working conditions of compressor, sentences to the rigid startup stage working conditions of compressor of compressor
Disconnected result is more accurate；It can be sentenced after the completion of compressor start by the external disk tube temperature of the phase current of detection compressor and air-conditioning
The severe duty of disconnected compressor reduces the possibility judged by accident after the completion of compressor start to working conditions of compressor, to compressor start
The judging result of working conditions of compressor is more accurate after the completion, to can avoid complete in compressor rigid startup stage and compressor start
At the rear normal operation for influencing air-conditioning because of erroneous judgement；And compressor can be adjusted accordingly most when compressor is in severe duty
Low running frequency avoids the running frequency of compressor from dropping to low value, prevents compressor from operating in the low-frequency feelings of high current
Under condition, and then compressor is avoided step-out occur, avoids influencing user experience.
Optionally, the first condition is to be less than first time threshold in the continuous working period.
It can judge whether compressor is in rigid startup stage by first time threshold in this way.
Optionally, the second condition is to be more than or equal to first time threshold in the continuous working period.
It can judge whether compressor is in the start completion stage by first time threshold in this way.
Optionally, if the continuous working period meets first condition, the minimum fortune according to the phase current regulation
Line frequency, comprising:
If the continuous working period meets the first condition, the size of the phase current is judged；
If the phase current is more than or equal to the first phase current threshold value, the minimum operating frequency is adjusted to the first lower frequency limit
Rate；
If the phase current is more than or equal to the second phase current threshold value and is less than the first phase current threshold value, described in adjusting
Minimum operating frequency is to the second lower frequency limit；
If the phase current is more than or equal to third phase current threshold and is less than the second phase current threshold value, described in adjusting
Minimum operating frequency is to third lower frequency limit.
In this way, the minimum operating frequency of compressor can be adjusted according to the phase current of detection compressor；And it can be according to compression
The heavy duty degree of machine adjusts the minimum operating frequency of compressor accordingly, and adjusting method is more scientific, practicability is stronger.
Optionally, if the continuous working period meets second condition, according to the phase current and the external disk tube temperature
Adjust the minimum operating frequency, comprising:
Obtain the external disk tube temperature；
If the continuous working period meets the second condition, the big of the phase current and the external disk tube temperature is judged
It is small；
If the phase current is more than or equal to the 4th phase current threshold value and the external disk tube temperature is more than or equal to the first temperature threshold,
The minimum operating frequency is then adjusted to the 4th lower frequency limit；
If the phase current is more than or equal to the 5th phase current threshold value and is less than the 4th phase current threshold value, and the external disk
Tube temperature is more than or equal to second temperature threshold value, then adjusts the minimum operating frequency to the 5th lower frequency limit；
If the phase current is more than or equal to the 6th phase current threshold value and is less than the 5th phase current threshold value, and the outer coil pipe
Temperature is more than or equal to third temperature threshold, then adjusts the minimum operating frequency to the 6th lower frequency limit.
In this way, the minimum operation frequency of compressor can be adjusted according to the external disk tube temperature of the phase current of detection compressor and air-conditioning
Rate.
Optionally, the third temperature threshold, the second temperature threshold value, first temperature threshold are incremented by successively.
In this way, the minimum operating frequency of compressor, adjusting method can be adjusted accordingly according to the heavy duty degree of compressor
It is more scientific, practicability is stronger.
Optionally, the 6th lower frequency limit, the 5th lower frequency limit, the 4th lower frequency limit are incremented by successively.
In this way, minimum operating frequency can be adjusted when the heavy duty degree of compressor is higher to high value, in compressor
Minimum operating frequency is adjusted when heavy duty degree is lower to lower value, the minimum operating frequency of compressor and its heavy duty degree are just
Correlation makes compressor when the heavy duty degree of compressor is lower under the premise of avoiding compressor from step-out occur as far as possible
Running frequency can be preferably minimized, and then can guarantee the loss for reducing compressor to the greatest extent, be conducive to improve compressor
Service life.
Another object of the present invention is to propose a kind of compressor lower frequency limit control device, to solve severe duty pushing
The problem of running frequency of contracting machine can drop to low value, easily cause compressor step-out.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of compressor lower frequency limit control device, comprising:
Control unit, described control unit are used to detect the operating parameter of air-conditioning, are adjusted and are compressed according to the operating parameter
The minimum operating frequency of machine, wherein the operating parameter includes the phase current of compressor.
The compressor lower frequency limit control device and above-mentioned compressor lower frequency limit control method are compared with the existing technology
Possessed advantage is identical, and details are not described herein.
Another object of the present invention is to propose a kind of air conditioner, to solve the running frequency meeting of compressor under severe duty
The problem of dropping to low value, and easily causing compressor step-out.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of air conditioner, computer readable storage medium and processor including being stored with computer program, the calculating
When machine program is read and run by the processor, any one of the above compressor lower frequency limit control method is realized.
Possessed advantage is identical compared with the existing technology with above-mentioned compressor lower frequency limit control method for the air conditioner,
Details are not described herein.
Another object of the present invention is to propose a kind of computer readable storage medium, to solve compressor under severe duty
Running frequency the problem of dropping to low value, easily causing compressor step-out.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of computer readable storage medium, the computer-readable recording medium storage have computer program, the meter
When calculation machine program is read out by the processor and runs, any one of the above compressor lower frequency limit control method is realized.
The computer readable storage medium is had compared with the existing technology with above-mentioned compressor lower frequency limit control method
Some advantages are identical, and details are not described herein.
Detailed description of the invention
Fig. 1 is the flow chart of compressor lower frequency limit control method described in the embodiment of the present invention；
Fig. 2 is another flow chart of compressor lower frequency limit control method described in the embodiment of the present invention；
Fig. 3 is the flow chart of step S202 described in the embodiment of the present invention；
Fig. 4 is the flow chart of step S203 described in the embodiment of the present invention；
Fig. 5 is the schematic diagram of compressor lower frequency limit control device described in the embodiment of the present invention.
Description of symbols:
10- detection module；20- control module.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
The present embodiment provides a kind of compressor lower frequency limit control methods, comprising:
The operating parameter for detecting air-conditioning adjusts the minimum operating frequency of compressor according to the operating parameter, wherein described
Operating parameter includes the phase current of compressor.
Wherein, the operating parameter is that can reflect the parameter of compressor operating condition, so as to according to the operating parameter
Judge the current operating condition of compressor.In the present embodiment, if judging that compressor is in non-heavily loaded work according to the operating parameter
When under condition, the minimum operating frequency of compressor is not adjusted, the normal frequency of compressor is kept to control；If according to the fortune
When row parameter judges that compressor is under severe duty, then the minimum operating frequency of compressor is adjusted accordingly, when compressor
After running frequency is reduced to minimum operating frequency, the running frequency of compressor no longer declines.
Wherein, when compressor operating is under severe duty, the load of compressor increases the phase current increasing that will lead to compressor
Greatly, so as to judge the operating condition of compressor by the phase current for detecting compressor, and sentenced by the phase current of compressor
The operating condition of disconnected compressor is the most accurate.If the phase current of compressor is excessively high, compressor is likely to be at heavy duty operating condition.
Wherein, the voltage at IPM module P, N mouthful end can be detected by the master chip of air-conditioning, and U, V, W three-phase is calculated
Phase current.
In this way, the present embodiment can judge the severe duty of compressor by detecting the operating parameter of air-conditioning, to compressor
The judging result of operating condition is accurate；And the minimum operating frequency of compressor can be adjusted accordingly when compressor is in severe duty,
It avoids the running frequency of compressor from dropping to low value, and then compressor is avoided step-out occur, avoid influencing user experience.
Optionally, as shown in Figure 1, the operating parameter of the detection air-conditioning, adjusts compressor according to the operating parameter
Minimum operating frequency, comprising:
Step S101 detects the phase current of compressor and the external disk tube temperature of air-conditioning；
Wherein, when compressor operating is under severe duty, the load of compressor increases the external disk tube temperature for also resulting in air-conditioning
Rise, to can judge the operation of compressor by the external disk tube temperature of the phase current and air-conditioning that detect compressor in step S101
Operating condition.If the phase current of compressor and the external disk tube temperature of air-conditioning are excessively high, compressor is very likely in heavy duty operating condition.
Wherein, the sampled value that external disk tube temperature can be received by temperature sensor, takes the average value of 64 samplings, and converts
For by degree Celsius as unit of temperature value.
Step S102 adjusts the minimum operating frequency according to the phase current and the external disk tube temperature；
Wherein, not right if judge that compressor is under non-severe duty according to the phase current and the external disk tube temperature
The minimum operating frequency of compressor is adjusted, and the normal frequency of compressor is kept to control；If according to the phase current and described
When external disk tube temperature judges that compressor is under severe duty, then the minimum operating frequency of compressor is adjusted accordingly.
When detecting the operating condition of compressor due to the phase current separately through compressor, in fact it could happen that biggish detection
Error causes the erroneous judgement to compressor operating condition, so occur compressor operating under non-severe duty, limit compressor
Minimum operating frequency this situation, influence the normal operation of air-conditioning.
In this way, the present embodiment can judge the weight of compressor by the external disk tube temperature of the phase current and air-conditioning that detect compressor
Operating condition is carried, the possibility of erroneous judgement is reduced, it is more accurate to the judging result of working conditions of compressor, to avoid influencing sky because of erroneous judgement
The normal operation of tune；And the minimum operating frequency of compressor can be adjusted accordingly when compressor is in severe duty, it avoids pressing
The running frequency of contracting machine dropped to low value, prevented compressor from operating in the low-frequency situation of high current, and then avoid compressing
There is step-out in machine, avoids influencing user experience.
Optionally, as shown in Fig. 2, the operating parameter of the detection air-conditioning, adjusts compressor according to the operating parameter
Minimum operating frequency, comprising:
Step S201 detects the continuous working period of compressor and the external disk tube temperature of air-conditioning；
Step S202 is minimum according to the phase current regulation if the continuous working period meets first condition
Running frequency；
Step S203, if the continuous working period meets second condition, according to the phase current and the outer coil pipe
Temperature adjusts the minimum operating frequency.
Optionally, the first condition is to be less than first time threshold in the continuous working period.
Optionally, the second condition is to be more than or equal to first time threshold in the continuous working period.
Since the external disk tube temperature of the rigid startup stage air-conditioning of compressor does not rise also completely, the external disk tube temperature of air-conditioning is not enough to instead
The intensity of load of compressor is reflected, if detecting the operating condition of compressor by the external disk tube temperature of air-conditioning, in fact it could happen that biggish inspection
Survey error, cause the erroneous judgement to compressor operating condition, so occur compressor operating under non-severe duty, limit compression
This situation of the minimum operating frequency of machine, influences the normal operation of air-conditioning.
In this way, the present embodiment can judge compressor by detecting the phase current of compressor in compressor rigid startup stage
Severe duty avoids the erroneous judgement in compressor rigid startup stage to working conditions of compressor, to the rigid startup stage compressor work of compressor
The judging result of condition is more accurate；The phase current of detection compressor and the outer coil pipe of air-conditioning can be passed through after the completion of compressor start
Temperature judges the severe duty of compressor, the possibility after the completion of compressor start to working conditions of compressor erroneous judgement is reduced, to compression
The judging result of working conditions of compressor is more accurate after machine start completion；To can avoid in compressor rigid startup stage and compressor
The normal operation of air-conditioning is influenced after start completion because of erroneous judgement；And compression can be adjusted accordingly when compressor is in severe duty
The minimum operating frequency of machine avoids the running frequency of compressor from dropping to low value, prevents compressor from operating in high current low frequency
In the case where rate, and then compressor is avoided step-out occur, avoids influencing user experience.
Optionally, the preferred first time threshold of the present embodiment is 5 minutes.
If first time threshold is too small, in fact it could happen that compressor also in startup stage and by the external disk tube temperature of air-conditioning come
Judge the severe duty of compressor, easily judges by accident；If first time threshold is too big, it is likely to occur compressor and has been in starting
The completion stage and judge the severe duty of compressor separately through the phase current of detection compressor, also easily judge by accident.
In this way, the preferred first time threshold of the present embodiment is 5 minutes, value is moderate, can avoid compressor start rank simultaneously
Section and erroneous judgement of the start completion stage to working conditions of compressor, and then avoid influencing the normal operation of air-conditioning.
Optionally, as shown in figure 3, step S202 includes:
Step S2021 judges the size of the phase current if the continuous working period meets the first condition；
Step S2022, if the phase current be more than or equal to the first phase current threshold value, adjust the minimum operating frequency to
First lower frequency limit；
Step S2023, if the phase current is more than or equal to the second phase current threshold value and is less than the first phase current threshold value,
The minimum operating frequency is then adjusted to the second lower frequency limit；
Step S2024, if the phase current is more than or equal to third phase current threshold and is less than the second phase current threshold value,
The minimum operating frequency is then adjusted to third lower frequency limit.
Wherein, step S2022, S2023, S2024 are parallel step.Wherein, the first phase current threshold value is greater than two phase electricity
Threshold value is flowed, the second phase current threshold value is greater than third phase current threshold.If the phase current of compressor is more than or equal to third phase current threshold
Value, then represent compressor and be in severe duty.
In this way, the present embodiment can adjust the minimum operating frequency of compressor according to the phase current of detection compressor；And it can
Adjust the minimum operating frequency of compressor accordingly according to the heavy duty degree of compressor, adjusting method is more scientific, practicability
It is stronger.
Optionally, the third lower frequency limit, second lower frequency limit, first lower frequency limit are incremented by successively.
Then the phase current of compressor is bigger, and the minimum operating frequency after adjusting is bigger.
In this way, minimum operating frequency can be adjusted when the heavy duty degree of compressor is higher to high value, in compressor
Minimum operating frequency is adjusted when heavy duty degree is lower to lower value, the minimum operating frequency of compressor and its heavy duty degree are just
It is related；Under the premise of avoiding compressor from step-out occur, make compressor as far as possible when the heavy duty degree of compressor is lower
Running frequency can be preferably minimized, and then can guarantee the loss for reducing compressor to the greatest extent, be conducive to improve compressor
Service life.
It should be noted that keeping the normal frequency tune of compressor when the phase current of compressor is unsatisfactory for above-mentioned condition
Section, is not adjusted minimum operating frequency.
Optionally, the present embodiment preferably the first phase current threshold value is 7A, and the second phase current threshold value is 6A, third phase current threshold
Value is 5A, and the first lower frequency limit is 25Hz, and the second lower frequency limit is 20Hz, and third lower frequency limit is 15Hz.
Optionally, as shown in figure 4, step S203 includes:
Step S2031 obtains the external disk tube temperature；
Step S2032 judges the phase current and described outer if the continuous working period meets the second condition
The size of coil pipe temperature；
Step S2033, if the phase current is more than or equal to the 4th phase current threshold value and the external disk tube temperature and is more than or equal to the
One temperature threshold then adjusts the minimum operating frequency to the 4th lower frequency limit；
Step S2034, if the phase current is more than or equal to the 5th phase current threshold value and is less than the 4th phase current threshold value,
And the external disk tube temperature is more than or equal to second temperature threshold value, then adjusts the minimum operating frequency to the 5th lower frequency limit；
Step S2035, if the phase current is more than or equal to the 6th phase current threshold value and is less than the 5th phase current threshold value, and
The external disk tube temperature is more than or equal to third temperature threshold, then adjusts the minimum operating frequency to the 6th lower frequency limit.
Wherein, step S2033, S2034, S2035 are parallel step.4th phase current threshold value is greater than the 5th phase current threshold
Value, the 5th phase current threshold value are greater than the 6th phase current threshold value.
In this way, the present embodiment can adjust compressor most according to the external disk tube temperature of the phase current of detection compressor and air-conditioning
Low running frequency.
Optionally, the third temperature threshold, the second temperature threshold value, first temperature threshold are incremented by successively.
Wherein, the external disk tube temperature of air-conditioning is higher, and the heavy duty degree for representing compressor is higher.
In this way, the minimum operating frequency of compressor, adjusting method can be adjusted accordingly according to the heavy duty degree of compressor
It is more scientific, practicability is stronger.
Optionally, the 6th lower frequency limit, the 5th lower frequency limit, the 4th lower frequency limit are incremented by successively.
In this way, minimum operating frequency can be adjusted when the heavy duty degree of compressor is higher to high value, in compressor
Minimum operating frequency is adjusted when heavy duty degree is lower to lower value, the minimum operating frequency of compressor and its heavy duty degree are just
Correlation makes compressor when the heavy duty degree of compressor is lower under the premise of avoiding compressor from step-out occur as far as possible
Running frequency can be preferably minimized, and then can guarantee the loss for reducing compressor to the greatest extent, be conducive to improve compressor
Service life.
It should be noted that step S2033, S2034, S2035 are equally applicable to step S102.When the phase current of compressor
And external disk tube temperature is kept the normal frequency of compressor to adjust, minimum operating frequency is not adjusted when being unsatisfactory for above-mentioned condition.
Optionally, the present embodiment preferably the 4th phase current threshold value is 7A, and the 5th phase current threshold value is 6A, the 6th phase current threshold
Value is 5A, and the 4th lower frequency limit is 25Hz, and the 5th lower frequency limit is 20Hz, and the 6th lower frequency limit is 15Hz, the first temperature threshold
It is 55 DEG C, second temperature threshold value is 50 DEG C, and third temperature threshold is 45 DEG C.
The present embodiment also provides a kind of compressor lower frequency limit control device, comprising:
Control unit, described control unit are used to detect the operating parameter of air-conditioning, are adjusted and are compressed according to the operating parameter
The minimum operating frequency of machine, wherein the operating parameter includes the phase current of compressor.
In this way, the compressor lower frequency limit control device in the present embodiment can be judged by detecting the operating parameter of air-conditioning
The severe duty of compressor is accurate to the judging result of working conditions of compressor；And it can be corresponding when compressor is in severe duty
The minimum operating frequency for adjusting compressor, avoids the running frequency of compressor from dropping to low value, and then compressor is avoided to occur
Step-out avoids influencing user experience.
Optionally, as shown in figure 5, described control unit includes:
Detection module 10, the detection module 10 are used to detect the continuous working period of compressor and the outer coil pipe of air-conditioning
Temperature；
Control module 20, if the control module 20 meets first condition for the continuous working period, according to institute
State minimum operating frequency described in phase current regulation；
If the control module 20, which is also used to the continuous working period, meets second condition, according to the phase current and
The external disk tube temperature adjusts the minimum operating frequency.
In this way, control unit in the present embodiment can compressor rigid startup stage by detect the phase current of compressor come
The severe duty for judging compressor, avoids the erroneous judgement in compressor rigid startup stage to working conditions of compressor, has just started to compressor
The judging result of multistage compressor operating condition is more accurate；Can after the completion of compressor start by detection compressor phase current and
The external disk tube temperature of air-conditioning judges the severe duty of compressor, reduces after the completion of compressor start to working conditions of compressor erroneous judgement
May, it is more accurate to the judging result of working conditions of compressor after the completion of compressor start；To can avoid just having started in compressor
The normal operation of air-conditioning is influenced after the completion of stage and compressor start because of erroneous judgement；And severe duty phase can be in compressor
The minimum operating frequency for the adjusting compressor answered, avoids the running frequency of compressor from dropping to low value, prevents compressor from running
In the low-frequency situation of high current, and then compressor is avoided step-out occur, avoids influencing user experience.
The present embodiment also provides a kind of air conditioner, computer readable storage medium and place including being stored with computer program
Device is managed, when the computer program is read and run by the processor, realizes the lower frequency limit control of any one of the above compressor
Method processed.
In this way, the air conditioner in the present embodiment can judge the heavily loaded work of compressor by detecting the operating parameter of air-conditioning
Condition, and the minimum operating frequency of compressor is adjusted when compressor is in severe duty accordingly, avoid the operation frequency of compressor
Rate dropped to low value, and then compressor is avoided step-out occur, avoided influencing user experience.
The present embodiment also provides a kind of computer readable storage medium, and the computer-readable recording medium storage has calculating
Machine program when the computer program is read out by the processor and runs, realizes the control of any one of the above compressor lower frequency limit
Method.
In this way, the computer readable storage medium in the present embodiment can judge to compress by detecting the operating parameter of air-conditioning
The severe duty of machine, and the minimum operating frequency of compressor is adjusted when compressor is in severe duty accordingly, it avoids compressing
The running frequency of machine dropped to low value, and then compressor is avoided step-out occur, avoided influencing user experience.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (12)
1. a kind of compressor lower frequency limit control method characterized by comprising
The operating parameter for detecting air-conditioning adjusts the minimum operating frequency of compressor according to the operating parameter, wherein the operation
Parameter includes the phase current of the compressor.
2. compressor lower frequency limit control method according to claim 1, which is characterized in that the operation of the detection air-conditioning
Parameter adjusts the minimum operating frequency of compressor according to the operating parameter, comprising:
Detect the continuous working period of the compressor and the external disk tube temperature of air-conditioning；
If the continuous working period meets first condition, according to minimum operating frequency described in the phase current regulation；
If the continuous working period meets second condition, adjusted according to the phase current and the external disk tube temperature described minimum
Running frequency.
3. compressor lower frequency limit control method according to claim 2, which is characterized in that the first condition is described
Continuous working period is less than first time threshold.
4. compressor lower frequency limit control method according to claim 2, which is characterized in that the second condition is described
Continuous working period is more than or equal to first time threshold.
5. compressor lower frequency limit control method according to claim 2 or 3, which is characterized in that if the continuous service
Time meets first condition, then the minimum operating frequency according to the phase current regulation, comprising:
If the continuous working period meets the first condition, the size of the phase current is judged；
If the phase current is more than or equal to the first phase current threshold value, the minimum operating frequency is adjusted to the first lower frequency limit；
If the phase current is more than or equal to the second phase current threshold value and is less than the first phase current threshold value, adjust described minimum
Running frequency is to the second lower frequency limit；
If the phase current is more than or equal to third phase current threshold and is less than the second phase current threshold value, adjust described minimum
Running frequency is to third lower frequency limit.
6. compressor lower frequency limit control method according to claim 2 or 4, which is characterized in that if the continuous service
Time meets second condition, then adjusts the minimum operating frequency according to the phase current and the external disk tube temperature, comprising:
Obtain the external disk tube temperature；
If the continuous working period meets the second condition, the size of the phase current and the external disk tube temperature is judged；
If the phase current is more than or equal to the 4th phase current threshold value and the external disk tube temperature is more than or equal to the first temperature threshold, adjust
The minimum operating frequency is saved to the 4th lower frequency limit；
If the phase current is more than or equal to the 5th phase current threshold value and is less than the 4th phase current threshold value, and the external disk tube temperature
More than or equal to second temperature threshold value, then the minimum operating frequency is adjusted to the 5th lower frequency limit；
If the phase current is more than or equal to the 6th phase current threshold value and is less than the 5th phase current threshold value, and the external disk tube temperature is big
In being equal to third temperature threshold, then the minimum operating frequency is adjusted to the 6th lower frequency limit.
7. compressor lower frequency limit control method according to claim 5, which is characterized in that the third lower frequency limit,
Second lower frequency limit, first lower frequency limit are incremented by successively.
8. compressor lower frequency limit control method according to claim 6, which is characterized in that the 6th lower frequency limit,
5th lower frequency limit, the 4th lower frequency limit are incremented by successively.
9. compressor lower frequency limit control method according to claim 6, which is characterized in that the third temperature threshold,
The second temperature threshold value, first temperature threshold are incremented by successively.
10. a kind of compressor lower frequency limit control device characterized by comprising
Control unit, described control unit are used to detect the operating parameter of air-conditioning, adjust compressor according to the operating parameter
Minimum operating frequency, wherein the operating parameter includes the phase current of compressor.
11. a kind of air conditioner, which is characterized in that computer readable storage medium and processing including being stored with computer program
Device when the computer program is read and run by the processor, realizes such as the described in any item compressors of claim 1-9
Lower frequency limit control method.
12. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer journey
Sequence when the computer program is read out by the processor and runs, realizes such as the described in any item compressor lower limits of claim 1-9
Control method for frequency.
Priority Applications (1)
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| CN113107825A (en) * | 2020-01-13 | 2021-07-13 | 安徽美芝制冷设备有限公司 | Control system, method and device of compressor, refrigeration equipment and storage medium |
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