CN108278714A - A kind of control method of air-conditioning - Google Patents
A kind of control method of air-conditioning Download PDFInfo
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- CN108278714A CN108278714A CN201710005442.9A CN201710005442A CN108278714A CN 108278714 A CN108278714 A CN 108278714A CN 201710005442 A CN201710005442 A CN 201710005442A CN 108278714 A CN108278714 A CN 108278714A
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Abstract
The present invention proposes a kind of control method of air-conditioning, including：S1：Detection operation of air conditioner electric current in real time；S2：Judge whether present current value is less than the first current threshold；If so, carrying out step S3；If it is not, by compressor shutdown；S3：Judge whether present current value is less than the second current threshold；If so, carrying out step S4；If it is not, reducing the running frequency of compressor；S4：Judge whether present current value is less than third current threshold；If so, compressor continues to work normally；If it is not, compressor keeps current operation frequency, forbid raising frequency.The present invention is in operation of air conditioner when electric current appearance exception; pass through the running current setting electric current threshold value to air-conditioning; the case where reaching current threshold according to actual current value; compressor is controlled; play the role of to air-conditioning current protection; not only avoid the occurrence of because electric current break down suddenly cause air-conditioning to burn out the case where, also ensure the operating of air-conditioning to the maximum extent when electric current occurs abnormal, be unlikely to influence the use of user.
Description
Technical field
The present invention relates to household appliance technical fields, more particularly, to a kind of control method of air-conditioning.
Background technology
Currently, household electrical appliance bring more and more convenience, also make quality of life higher and higher.But in household electric
During the use of device, since home circuit the case where electric current becomes larger suddenly may occur, at this moment electric current because of certain faults
Become larger suddenly and not only the service life of household electrical appliance is impacted, in some instances it may even be possible to cause household electrical appliances to burn out, cause the loss of user.
The present invention provides a kind of current protection method of air-conditioning by taking air-conditioning as an example, will not be because of electric current when making operation of air conditioner by this method
It breaks down suddenly and air-conditioning burnout phenomenon occurs.
Application No. is 201310248544.5 patent documents to disclose a kind of control method of air conditioner, including：S1：
Under cooling operation mode, the run time and running current of the compressor of air conditioner are detected.S2：By the fortune of the compressor detected
Row electric current is compared with first predetermined value.S3：When detecting that the running current of compressor is more than or equal to first predetermined value, control
The rotating speed of the indoor fan of air conditioner processed is reduced to desired speed by the rotating speed of current wind shelves, when the operation electricity for detecting compressor
When stream is less than first predetermined value, step S2 is returned to, wherein desired speed is less than the rotating speed of the low wind file of air conditioner.But it is special at this
In profit, when the running current of compressor is more than scheduled current, by controlling the rotating speed of indoor fan to reduce the fortune of compressor
Row electric current, this method rely solely on the operation of control indoor fan to reduce the running current of compressor, do not directly control
The operation of compressor directly effectively cannot play the role of current protection to air-conditioning.
Invention content
The present invention is in order to solve the problem of to cause air-conditioning to burn out because electric current breaks down suddenly in operation of air conditioner.For this purpose,
The present invention proposes a kind of control method of air-conditioning, effectively can carry out current protection to air-conditioning.
In order to solve the above technical problems, technical scheme is as follows：
A kind of control method of air-conditioning, including：
S1：Detection operation of air conditioner electric current in real time；
S2：Judge whether present current value is less than the first current threshold；If so, carrying out step S3；If it is not, then compressor is stopped
Machine carries out current protection；
S3：Judge whether present current value is less than the second current threshold；If so, carrying out step S4；If it is not, then reducing compressor
Running frequency；
S4：Judge whether present current value is less than third current threshold；If so, compressor continues to work normally；If it is not, then pressing
Contracting machine keeps current operation frequency, and forbids raising frequency；
Wherein, in terms of numerical values recited, the first current threshold, the second current threshold and third current threshold are sequentially reduced.
Further, in step s 2, for judging result be it is no when, i.e., present current value be greater than or equal to the first electric current
When threshold value, following steps are specifically executed：
S201：Recording compressed machine current operation frequency, compressor shutdown；
S202：Judge whether present current value is less than the 4th current threshold；If it is not, then continuing step S202；If so, into
Row step S203；
S203：Start compressor；
S204：Raising frequency stage by stage；
Wherein, in terms of numerical values recited, the 4th current threshold is less than third current threshold.
Preferably, during the raising frequency stage by stage of step S204, including the normal raising frequency stage eases up the raising frequency stage；
Wherein, compressor carries out the normal raising frequency stage first, i.e., is run according to normal raising frequency speed；When air-conditioning is not up to
Limit frequency is protected, and when the running frequency of compressor reaches the specified ratio of the running frequency numerical value recorded in step S201, is carried out
The slow raising frequency stage.
Further, in step s3, for judging result be it is no when, i.e., present current value be greater than or equal to the second electric current
When threshold value, following steps are specifically executed：
S301：Recording compressed machine current operation frequency.
S302：Frequency reducing stage by stage.
S303：Judge whether running frequency is preferably minimized rated frequency；If it is not, then carrying out step S304；If so, carrying out
Step S305.
S304：Judge whether present current value is less than the second current threshold；If it is not, then continuing step S302；If so,
Then carry out step S307.
S305：Compressor keeps the operation of minimum rated frequency.
S306：Judge whether present current value is less than the second current threshold；If it is not, then continuing step S305；If so,
Then carry out step S307.
S307：Compressor keeps current frequency operation, and forbids raising frequency.
S308：Judge whether present current value is less than third current threshold；If it is not, then continuing step S308；If so,
Then carry out step S309.
S309：Raising frequency stage by stage.
Preferably, during the frequency reducing stage by stage of step S302, it is provided with specified frequency reducing period and specified frequency reducing point, is pressed
Contracting machine is with specified frequency reducing point frequency reducing, and after a specified frequency reducing period, and again with specified frequency reducing point frequency reducing, process repeats
Until meeting the near minimum rated frequency of running frequency or present current value less than the either condition in the second current threshold；
Wherein, specified frequency reducing period and specified frequency reducing point are preset value, are set with specific data mode when air-conditioning dispatches from the factory, and deposit
Storage is in EEPROM (band electrically erasable programmable read-only memory).
Preferably, during the raising frequency stage by stage of step S309, including the normal raising frequency stage eases up the raising frequency stage；
Wherein, compressor carries out the normal raising frequency stage first, i.e., is run according to normal raising frequency speed；When air-conditioning is not up to
Limit frequency is protected, and when the running frequency of compressor reaches the specified ratio of the running frequency numerical value recorded in step S301, is carried out
The slow raising frequency stage.
Further, in step s 4, for judging result be it is no when, i.e., present current value be greater than or equal to third electric current
When threshold value, following steps are specifically executed：
S401：Current frequency is kept, raising frequency is forbidden；
S402：Judge whether present current value is less than third current threshold；If it is not, then continuing step S402；If so, into
Row step S403；
S403：Compressor restores normal operation.
Preferably, the first current threshold, the second current threshold, third current threshold and the 4th current threshold are pre-
If value is set when air-conditioning dispatches from the factory with specific data mode, and is stored in EEPROM (the band read-only storages of electrically erasable programmable
Device) in.
Further, third current threshold be by the data that the specification of each device and experimental conditions obtain in air-conditioning,
To judge reference value that whether compressor works normally.
Preferably, the first current threshold is 1.25 ~ 1.35 times of third current threshold, to judge whether to stop compressor
The reference value of operation prevents from, because electric current is excessive, air-conditioning internal components being burnt out；
Second current threshold is 1.05 ~ 1.15 times of third current threshold, to judge whether to reduce compressor operating frequency
Reference value；
4th current threshold is 0.85 ~ 0.95 times of third current threshold, to judge whether electric current is restored in normal range (NR),
Basis for estimation whether releasing as current failure, it is ensured that compressor of air conditioner starts under the electric current environment of safety.
Compared with prior art, the present invention passes through the running current to air-conditioning in operation of air conditioner when electric current appearance exception
The case where setting different current thresholds, different current thresholds reached according to actual current value, to the operating status of compressor into
Row control is played the role of carrying out current protection to air-conditioning, and not only avoid the occurrence of causes air-conditioning to burn because electric current breaks down suddenly
Bad situation also ensures the operating of air-conditioning to the maximum extent when electric current occurs abnormal, is unlikely to influence the use of user.
Description of the drawings
In order to illustrate more clearly of the technical solution in the present invention, attached drawing needed in the embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the invention, for the general of this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of flow diagram of the control method of air-conditioning of the present invention.
Fig. 2 is a kind of another flow diagram of the control method of air-conditioning of the present invention.
Specific implementation mode
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention is further described,
Obviously, described embodiment is only a part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making the creative labor,
It shall fall within the protection scope of the present invention.
Embodiment 1, as shown in Figure 1, a kind of control method of air-conditioning of the present invention includes the following steps：
S1：Detection operation of air conditioner electric current in real time, wherein the method for detection operation of air conditioner electric current has been those skilled in the art institute
It is known, it just repeats no more here.
S2：Judge whether present current value is less than the first current threshold；If so, carrying out step S3；If it is not, then will compression
Machine is shut down, and current protection is carried out.
S3：Judge whether present current value is less than the second current threshold；If so, carrying out step S4；If it is not, then reducing pressure
The running frequency of contracting machine.
S4：Judge whether present current value is less than third current threshold；If so, compressor continues to work normally；If it is not,
Then compressor keeps current operation frequency, and forbids raising frequency.
In the above-mentioned methods, the first current threshold, the second current threshold and third current threshold are preset value, in sky
It is set, and is stored in EEPROM (band electrically erasable programmable read-only memory) with specific data mode when recalling factory.
In terms of numerical values recited, the first current threshold, the second current threshold and third current threshold are sequentially reduced.
Embodiment 2
Based on embodiment 1, for the first current threshold, the second current threshold, third current threshold, particular content is as follows：
First current threshold, the second current threshold are using third current threshold as numerical basis.
Third current threshold, and can be described as prohibiting raising frequency current value, mainly pass through the specification and reality of each device in air-conditioning
Situation is tested, the reliability data obtained, to judge reference value that whether compressor works normally.
Second current threshold, and can be described as frequency reducing current value, in real life, according to the difference of air-conditioning specifications and models,
Second current threshold is taken as 1.05 ~ 1.15 times of third current threshold, to judge whether to reduce the ginseng of compressor operating frequency
Examine value.
First current threshold, and can be described as shutting down current value, in real life, according to the difference of air-conditioning specifications and models,
First current threshold is taken as 1.25 ~ 1.35 times of third current threshold, to judge whether to stop the reference value of compressor operating,
It prevents from, because electric current is excessive, air-conditioning internal components being burnt out.
Embodiment 3 illustrates, as shown in Figure 2 as to method in embodiment 1；
In to embodiment 1 in the deterministic process of step S2, when being no for judging result, i.e., present current value is greater than or equal to
When the first current threshold, following steps are executed：
S201：Recording compressed machine current operation frequency, compressor shutdown.
Wherein, compressor current operation frequency is recorded and stored by the memory of air-conditioning, and after the completion of record, air-conditioning is automatic
Compressor operating switch is cut off, to avoid the occurrence of the phenomenon that being burnt out because of the excessive air-conditioning of electric current.
S202：Judge whether present current value is less than the 4th current threshold；If it is not, then continuing step S202；If so,
Then carry out step S203.
Wherein, in terms of numerical values recited, the 4th current threshold is less than third current threshold.
Further, the 4th current threshold, and can be described as releasing current value, it is preset value, and be with third current threshold
Numerical basis is set when air-conditioning dispatches from the factory with specific data mode, and is stored in EEPROM (electrically erasable programmable is read-only deposits for band
Reservoir) in；In real life, according to the difference of air-conditioning specifications and models, the 4th current threshold is taken as third current threshold
0.85 ~ 0.95 times, to judge whether electric current is restored in normal range (NR), basis for estimation whether releasing as current failure,
Ensure that compressor of air conditioner starts under the electric current environment of safety.
S203：Start compressor.
S204：Raising frequency stage by stage.
Wherein, raising frequency is that present current value is less than the 4th current threshold and after exiting compressor shutdown state stage by stage,
It is carried out when compressor start, detailed process includes：The normal raising frequency stage eases up the raising frequency stage.
Compressor carries out the normal raising frequency stage first, i.e., is run according to normal raising frequency speed；When air-conditioning is not up to
Limit frequency is protected, and when the running frequency of compressor reaches the specified ratio of the running frequency numerical value recorded in step S201, is carried out
The slow raising frequency stage；
Further, when the protection of limit frequency is that air-conditioning present current value is not up to the first current threshold, the current protection process of air-conditioning,
It specifically includes and forbids compressor raising frequency and reduction compressor operating frequency；
Preferably, in real life, according to the difference of air-conditioning specifications and models, the specified ratio is set as being 75% ~ 85%, and deposits
Storage is in EEPROM (band electrically erasable programmable read-only memory)；
Slow raising frequency speed is specified raising frequency speed, is preset value, is set with specific data mode when air-conditioning dispatches from the factory, and be stored in
In EEPROM (band electrically erasable programmable read-only memory).
Embodiment 4 illustrates, as shown in Figure 2 as to method in embodiment 1；
In to embodiment 1 in the deterministic process of step S3, when being no for judging result, i.e., present current value is greater than or equal to
When the second current threshold, following steps are executed：
S301：Recording compressed machine current operation frequency.
Wherein, it is recorded by the memory of air-conditioning and stores compressor current operation frequency.
S302：Frequency reducing stage by stage.
During frequency reducing, oscillation is not generated in order to control compressor frequency, reduces the electrical property to air-conditioning internal component
It can impact, frequency reducing stage by stage is used to compressor；
During frequency reducing stage by stage, be provided with specified frequency reducing period and specified frequency reducing point, compressor with specified frequency reducing point frequency reducing,
And after a specified frequency reducing period, again with specified frequency reducing point frequency reducing, process repeats near most to running frequency is met
Until low rated frequency or present current value are less than the either condition in the second current threshold.
Wherein, specified frequency reducing period and specified frequency reducing point are preset value, are set with specific data mode when air-conditioning dispatches from the factory,
And it is stored in EEPROM (band electrically erasable programmable read-only memory).
S303：Judge whether running frequency is preferably minimized rated frequency；If it is not, then carrying out step S304；If so, carrying out
Step S305.
Minimum rated frequency is the minimum running frequency of compressor, is set with specific data mode when air-conditioning dispatches from the factory, and
It is stored in EEPROM (band electrically erasable programmable read-only memory).
Wherein, the setting of minimum rated frequency can make air-conditioning be greater than or equal to the second current threshold in current flow, and really
In the case that guarantor's air-conditioning internal component is unlikely to damage, ensures the operating of compressor as much as possible, maintain the use state of air-conditioning.
S304：Judge whether present current value is less than the second current threshold；If it is not, then continuing step S302；If so,
Then carry out step S307.
S305：Compressor keeps the operation of minimum rated frequency.
S306：Judge whether present current value is less than the second current threshold；If it is not, then continuing step S305；If so,
Then carry out step S307.
S307：Compressor keeps current frequency operation, and forbids raising frequency.
S308：Judge whether present current value is less than third current threshold；If it is not, then continuing step S308；If so,
Then carry out step S309.
S309：Raising frequency stage by stage.
Raising frequency is after present current value is less than third current threshold stage by stage, and the raising frequency process of compressor specifically includes：Just
The normal raising frequency stage eases up the raising frequency stage.
Wherein, compressor carries out the normal raising frequency stage first, i.e., is run according to normal raising frequency speed；When air-conditioning not
Reach limit frequency to protect, and when the running frequency of compressor reaches the specified ratio of the running frequency numerical value recorded in step S301,
Carry out the slow raising frequency stage；
Further, when the protection of limit frequency is that air-conditioning present current value is not up to the first current threshold, the current protection process of air-conditioning,
It specifically includes and forbids compressor raising frequency and reduction compressor operating frequency；
Preferably, in real life, according to the difference of air-conditioning specifications and models, the specified ratio is set as being 75% ~ 85%, and deposits
Storage is in EEPROM (band electrically erasable programmable read-only memory)；
Its slow raising frequency speed is specified raising frequency speed, is preset value, is set with specific data mode when air-conditioning dispatches from the factory, and store
In EEPROM (band electrically erasable programmable read-only memory).
Embodiment 5 illustrates, as shown in Figure 2 as to method in embodiment 1；
In to embodiment 1 in the deterministic process of step S4, when being no for judging result, i.e., present current value is greater than or equal to
When third current threshold, following steps are executed：
S401：Current frequency is kept, raising frequency is forbidden.
When present current value is more than or equal to third current threshold, airconditioning control compressor keeps currently running frequency,
And compressor is forbidden to increase frequency.
S402：Judge whether present current value is less than third current threshold；If it is not, then continuing step S402；If so,
Then carry out step S403.
S403：Compressor restores normal operation.
According to above example, the present invention when electric current appearance exception, passes through the running current to air-conditioning in operation of air conditioner
The case where setting different current thresholds, different current thresholds reached according to actual current value, to the operating status of compressor into
Row control is played the role of carrying out current protection to air-conditioning, and not only avoid the occurrence of causes air-conditioning to burn because electric current breaks down suddenly
Bad situation also ensures the operating of air-conditioning to the maximum extent when electric current occurs abnormal, is unlikely to influence the use of user.
The foregoing is merely the preferred embodiments of the application, not limiting the application, all essences in the application
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of the application protection god.
Claims (10)
1. a kind of control method of air-conditioning, which is characterized in that including：
S1：Detection operation of air conditioner electric current in real time；
S2：Judge whether present current value is less than the first current threshold；If so, carrying out step S3；If it is not, then compressor is stopped
Machine carries out current protection；
S3：Judge whether present current value is less than the second current threshold；If so, carrying out step S4；If it is not, then reducing compressor
Running frequency；
S4：Judge whether present current value is less than third current threshold；If so, compressor continues to work normally；If it is not, then pressing
Contracting machine keeps current operation frequency, and forbids raising frequency；
Wherein, in terms of numerical values recited, the first current threshold, the second current threshold and third current threshold are sequentially reduced.
2. a kind of control method of air-conditioning according to claim 1, which is characterized in that in step s 2, for judging to tie
When fruit is no, i.e., when present current value is greater than or equal to the first current threshold, specifically execute following steps：
S201：Recording compressed machine current operation frequency, compressor shutdown；
S202：Judge whether present current value is less than the 4th current threshold；If it is not, then continuing step S202；If so, into
Row step S203；
S203：Start compressor；
S204：Raising frequency stage by stage；
Wherein, in terms of numerical values recited, the 4th current threshold is less than third current threshold.
3. a kind of control method of air-conditioning according to claim 2, which is characterized in that in the raising frequency stage by stage of step S204
In the process, including the normal raising frequency stage eases up the raising frequency stage；
Wherein, compressor carries out the normal raising frequency stage first, i.e., is run according to normal raising frequency speed；When air-conditioning is not up to
Limit frequency is protected, and when the running frequency of compressor reaches the specified ratio of the running frequency numerical value recorded in step S201, is carried out
The slow raising frequency stage.
4. a kind of control method of air-conditioning according to claim 1, which is characterized in that in step s3, for judging to tie
When fruit is no, i.e., when present current value is greater than or equal to the second current threshold, specifically execute following steps：
S301：Recording compressed machine current operation frequency；
S302：Frequency reducing stage by stage；
S303：Judge whether running frequency is preferably minimized rated frequency；If it is not, then carrying out step S304；If so, carrying out step
S305；
S304：Judge whether present current value is less than the second current threshold；If it is not, then continuing step S302；If so, into
Row step S307；
S305：Compressor keeps the operation of minimum rated frequency；
S306：Judge whether present current value is less than the second current threshold；If it is not, then continuing step S305；If so, into
Row step S307；
S307：Compressor keeps current frequency operation, and forbids raising frequency；
S308：Judge whether present current value is less than third current threshold；If it is not, then continuing step S308；If so, into
Row step S309；
S309：Raising frequency stage by stage.
5. a kind of control method of air-conditioning according to claim 4, which is characterized in that in the frequency reducing stage by stage of step S302
In the process, specified frequency reducing period and specified frequency reducing point are provided with, compressor with specified frequency reducing point frequency reducing, and by one it is specified
After the frequency reducing period, again with specified frequency reducing point frequency reducing, process is repeated to meeting the near minimum rated frequency of running frequency or current
Until current value is less than the either condition in the second current threshold；
Wherein, specified frequency reducing period and specified frequency reducing point are preset value, are set with specific data mode when air-conditioning dispatches from the factory, and deposit
Storage is in EEPROM (band electrically erasable programmable read-only memory).
6. a kind of control method of air-conditioning according to claim 4, which is characterized in that in the raising frequency stage by stage of step S309
In the process, including the normal raising frequency stage eases up the raising frequency stage；
Wherein, compressor carries out the normal raising frequency stage first, i.e., is run according to normal raising frequency speed；When air-conditioning is not up to
Limit frequency is protected, and when the running frequency of compressor reaches the specified ratio of the running frequency numerical value recorded in step S301, is carried out
The slow raising frequency stage.
7. a kind of control method of air-conditioning according to claim 1, which is characterized in that in step s 4, for judging to tie
When fruit is no, i.e., when present current value is greater than or equal to third current threshold, specifically execute following steps：
S401：Current frequency is kept, raising frequency is forbidden；
S402：Judge whether present current value is less than third current threshold；If it is not, then continuing step S402；If so, into
Row step S403；
S403：Compressor restores normal operation.
8. according to a kind of control method of air-conditioning of claim 1-7 any one of them, which is characterized in that the first current threshold,
Second current threshold, third current threshold and the 4th current threshold are preset value, when air-conditioning dispatches from the factory with specific data shape
Formula is set, and is stored in EEPROM (band electrically erasable programmable read-only memory).
9. a kind of control method of air-conditioning according to claim 8, which is characterized in that third current threshold is to pass through air-conditioning
In each device specification and the data that obtain of experimental conditions, to judge reference value that whether compressor works normally.
10. a kind of control method of air-conditioning according to claim 9, which is characterized in that the first current threshold is third electricity
Flow threshold value 1.25 ~ 1.35 times are prevented because electric current is excessive, to judge whether to stop the reference value of compressor operating by air-conditioning
Internal components are burnt out；
Second current threshold is 1.05 ~ 1.15 times of third current threshold, to judge whether to reduce compressor operating frequency
Reference value；
4th current threshold is 0.85 ~ 0.95 times of third current threshold, to judge whether electric current is restored in normal range (NR),
Basis for estimation whether releasing as current failure, it is ensured that compressor of air conditioner starts under the electric current environment of safety.
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