CN110410937A - A kind of air conditioner self diagnosis control method, control device and air conditioner - Google Patents
A kind of air conditioner self diagnosis control method, control device and air conditioner Download PDFInfo
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- CN110410937A CN110410937A CN201910669044.6A CN201910669044A CN110410937A CN 110410937 A CN110410937 A CN 110410937A CN 201910669044 A CN201910669044 A CN 201910669044A CN 110410937 A CN110410937 A CN 110410937A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The present invention provides a kind of air conditioner self diagnosis control method, control device and air conditioner, is related to air-conditioning technical field, comprising: obtains machine coil temperature T in currentIt steams, outer machine coil temperature TIt is cold, Tail Pipe Temperature TRowWith outdoor environment temperature TRing；According to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith the Tail Pipe Temperature TRow, calculate discharge superheat TIt crossesWith heat source temperature difference TDifference；According to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate change rate MIt crosses、MDifferenceWith MRing；According to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis control is carried out to current air-conditioning.Air conditioner self diagnosis control method, control device and air conditioner of the present invention, discharge superheat and heat source temperature difference feedback system run difference when passing through conditioners running conditions, and then screen out conditioners running conditions, and it is more accurate to judge.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of air conditioner self diagnosis control method, control device
With air conditioner.
Background technique
With the operation of air-conditioning, air-conditioning inevitably will receive external environment and use environment and part reliability difference
Influence so that air conditioner product itself and working effect have differences.
Whether existing air-conditioning normal open overcurrent and suction and discharge temperature are able to satisfy requirement to diagnose the performance of air conditioner, but its
It detects not accurate enough.
It can be seen that needing to improve design to the diagnostic method of air conditioner.
Summary of the invention
Problems solved by the invention is that the self-diagnosing method of existing air conditioner is not accurate enough, can not accurately judge air conditioner
Whether job requirement can satisfy.
To solve the above problems, the present invention provides a kind of air conditioner self diagnosis control method, comprising:
Obtain machine coil temperature T in currentIt steams, outer machine coil temperature TIt is cold, Tail Pipe Temperature TRowWith outdoor environment temperature TRing；
According to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith the Tail Pipe Temperature TRow, calculate exhaust
Degree of superheat TIt crossesWith heat source temperature difference TDifference；
According to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate change rate MIt crosses、
MDifferenceWith MRing；
According to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis control is carried out to current air-conditioning.
Discharge superheat and heat source temperature difference feedback system run difference when the present invention passes through conditioners running conditions, and then discriminate
Not Chu conditioners running conditions, judge it is more accurate.
Optionally, pressure ratio value is run by air conditioner and replaces heat source temperature difference TDifference, calculate change rate MThan, and in conjunction with the MIt crossesWith
The MRing, self diagnosis control is carried out to current air-conditioning.
Optionally, the MIt crosses=(TCross 2-TCross 1)/△ t, the TCross 2For t2The discharge superheat at moment, the TCross 1For t1When
The discharge superheat at quarter；
The MDifference=(TPoor 2-TPoor 1)/△ t, the TPoor 2For t2The heat source temperature difference at moment, the TPoor 1For t1The heat source temperature at moment
Difference；
The MRing=(TRing 2-TRing 1)/△ t, the TRing 2For t2Air conditioner chamber's outside environment temperature at moment, the TRing 1For t1
Air conditioner chamber's outside environment temperature at moment；
The △ t is t2Moment and t1The time difference at moment.
Optionally, the △ t is within the scope of 1~30 second.
Optionally, in air conditioner refrigerating mode operation, meeting following either conditions, then self diagnosis result is air conditioner operation
Normally, being unsatisfactory for any of the above-described condition, then self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceMore than or equal to zero and the MRingGreater than zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceGreater than zero and the MRingGreater than zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceEqual to zero and the MRingMore than or equal to zero；
Or, the MIt crossesEqual to zero and the MDifferenceLess than zero and the MRingLess than zero；
Or, the MIt crossesLess than zero and the MDifferenceLess than zero and the MRingLess than or equal to zero.
Optionally, in air conditioner refrigerating mode operation, meeting following conditions, then self diagnosis result is air conditioner normal operation,
And continue to judge whether flow rises, it is to continue to judge degree of superheat TIt crossesWhether decline, degree of superheat TIt crossesDecline then promotes compressor
Frequency, degree of superheat TIt crossesDo not decline, continue to lift up flow:
The MIt crossesGreater than zero and the MDifferenceGreater than zero and the MRingGreater than zero.
Optionally, in air conditioner refrigerating mode operation, meeting following conditions, then self diagnosis result is air conditioner normal operation,
And continue to judge degree of superheat TIt crossesWhether promoted, be, then promotes flow:
The MIt crossesGreater than zero and the MDifferenceEqual to zero and the MRingGreater than zero.
Optionally, in air conditioner refrigerating mode operation, meeting following conditions, then self diagnosis result is air conditioner normal operation,
And promote flow and compressor frequency:
The MIt crossesEqual to zero and the MDifferenceGreater than zero and the MRingGreater than zero.
Optionally, in air conditioner refrigerating mode operation, meet following either conditions and then continue to judge air-conditioner outdoor unit electricity
Whether machine revolving speed declines, and is, then self diagnosis result is air conditioner normal operation；It is no, then remind cleaning air conditioner:
The MIt crossesGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceEqual to zero and the MRingLess than zero；
Or, the MIt crossesLess than zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesEqual to zero and the MDifferenceLess than zero and the MRingEqual to zero.
Optionally, in air conditioner refrigerating mode operation, meeting following conditions, then self diagnosis result is that air conditioner lacks refrigeration
Agent:
The MDifferenceLess than zero and the MRingGreater than zero.
Optionally, in air-conditioning heating mode operation, meeting following either conditions, then self diagnosis result is air conditioner operation
Normally, otherwise self diagnosis result is air conditioner operation exception:
The MDifferenceGreater than zero and the MRingGreater than zero；
Or, the MIt crossesGreater than zero and the MRingLess than zero；
Or, the MIt crossesGreater than zero and the MDifferenceEqual to zero and the MRingGreater than zero；
Or, the MIt crossesLess than or equal to the equal and MDifferenceEqual to zero and the MRingMore than or equal to zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceLess than zero and the MRingLess than zero；
Or, the MIt crossesLess than zero and the MDifferenceLess than or equal to zero and the MRingEqual to zero；
Or, the MIt crossesEqual to zero and the MDifferenceEqual to zero and the MRingMore than or equal to zero；
Or, the MIt crossesLess than zero and the MDifferenceEqual to zero and the MRingGreater than zero.
Optionally, in air-conditioning heating mode operation, meeting following conditions, then self diagnosis result is air conditioner normal operation,
And continue to control compressor promotion frequency:
The MIt crossesMore than or equal to zero and the MDifferenceGreater than zero and the MRingGreater than zero.
Optionally, in air-conditioning heating mode operation, meeting following conditions, then self diagnosis result is air conditioner normal operation,
And continue to judge whether compressor frequency rises, it is that then self diagnosis result is air conditioner normal operation；It is no, then self diagnosis result
It is operating abnormally for air conditioner:
The MIt crossesGreater than zero and the MDifferenceMore than or equal to zero and the MRingLess than zero.
Optionally, in air-conditioning heating mode operation, meeting following either conditions, then self diagnosis result is air conditioner operation
It is abnormal, continue to judge whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is air conditioner normal operation；It is no,
Then self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceMore than or equal to zero and the MRingEqual to zero；
Or, the MIt crossesEqual to zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesMore than or equal to zero and the MDifferenceEqual to zero and the MRingLess than zero.
Optionally, in air-conditioning heating mode operation, meet following conditions then self diagnosis result be air conditioner be lack system
Cryogen:
The MDifferenceLess than zero and the MRingGreater than zero.
Optionally, in air-conditioning heating mode operation, meet following conditions then self diagnosis result be air conditioner be lack system
Cryogen, and continue to judge whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is air conditioner normal operation；
No, then self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceLess than zero and the MRingEqual to zero.
Optionally, in air-conditioning heating mode operation, meeting following conditions, then self diagnosis result is air conditioner operation exception,
And continue to judge whether motor speed declines on the outside of air conditioner chamber, whether liquid measure declines with whether compressor frequency declines, it is any
Judging result is is that self diagnosis result is air conditioner normal operation, and otherwise self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceLess than zero and the MRingEqual to zero.
Optionally, in air-conditioning heating mode operation, meeting following conditions, then self diagnosis result is air conditioner operation exception,
And continue to judge whether indoor motor revolving speed declines, it is that then self diagnosis result is air conditioner normal operation, promotes indoor motor and turn
Speed, otherwise self diagnosis result is air conditioner operation exception, reminds cleaning air conditioner；Or, continue to judge outdoor motor revolving speed whether under
Drop is that then self diagnosis result is air conditioner normal operation, promotes outdoor motor revolving speed, and otherwise self diagnosis result is air conditioner operation
It is abnormal, remind cleaning air conditioner:
The MIt crossesLess than zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero.
A kind of air conditioner self-diagnosis system, comprising:
Acquiring unit, the acquiring unit is for obtaining machine coil temperature T in currentIt steams, outer machine coil temperature TIt is cold, exhaust pipe
Temperature TRowWith outdoor environment temperature TRing；
Computing unit, the computing unit are used for according to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith
The Tail Pipe Temperature TRow, calculate discharge superheat TIt crossesWith heat source temperature difference TDifference；
According to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate change rate MIt crosses、
MDifferenceWith MRing；
Control unit, described control unit are used for according to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis is carried out to current air-conditioning
Control.
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, method described in any of the above embodiments is realized.
A kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer
Program when the computer program is read out by the processor and runs, realizes method described in any of the above embodiments.
Detailed description of the invention
Fig. 1 is self diagnosis control method flow chart described in the specific embodiment of the invention.
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 invention provides a kind of air conditioner self diagnosis control method, discharge superheat T when passing through conditioners running conditionsIt crosses
Difference is run with pressure ratio feedback system, and then screens out conditioners running conditions.
Self diagnosis control method of the invention passes through discharge superheat T in the air-conditioning booting periodIt crossesVariation tendency feed back system
Unite operating status, and operation led to the single order of the internal and external disk pipe heat source temperature difference and environment temperature, the variation tendency of feedback temperature and
Abnormal, in conjunction with thermodynamic cycle theory, identifying system operating condition, promptly and accurately feedback system is abnormal and excludes in time；
A kind of air conditioner self diagnosis control method includes the following steps:
Step S1, machine coil temperature T in current is obtainedIt steams, outer machine coil temperature TIt is cold, Tail Pipe Temperature TRowWith outdoor environment temperature
Spend TRing；
Step S2, according to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith the Tail Pipe Temperature TRow, meter
Calculate discharge superheat TIt crossesWith heat source temperature difference TDifference；
Step S3, according to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate and become
Rate MIt crosses、MDifferenceWith MRing；
Step S4, according to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis control is carried out to current air-conditioning.
Specifically, the inner disc temperature value T of inner disc temperature sensor detection is obtainedIt steams, obtain the detection of external disk temperature sensor
External disk temperature value TIt is cold, obtain the Tail Pipe Temperature value T of Tail Pipe Temperature sensor detectionRowAnd air conditioner chamber's outside environment temperature
Spend TRing；Preferably, every the T of acquisition in 5 secondsIt steams、TIt is cold、TRowWith TRing。
Calculate discharge superheat TIt crossesWith heat source temperature difference TDifference, it should be noted that heat source temperature difference TDifferenceSituation of change and pressure ratio
Situation of change it is consistent, therefore cross heat source temperature difference TDifferenceIt is replaceable with pressure ratio value, wherein TIt crosses=TRow-TIt is cold, TDifference=TIt is cold-TIt steams。
T is calculated againIt crosses、TDifferenceWith TRingVariation change rate MIt crosses、MDifferenceWith MRing, MIt crosses=(TIt crosses2-TIt crosses1)/△ t, MDifference=(TPoor 2-TPoor 1)/
△ t, MRing=(TRing 2-TRing 1)/△t；Wherein, TIt crosses2 be the discharge superheat at t2 moment, TIt crosses1 is the discharge superheat at t1 moment, TPoor 2
For the heat source temperature difference at t2 moment, TPoor 1For the heat source temperature difference at t1 moment, TRing 2For air conditioner chamber's outside environment temperature at t2 moment, TRing 1
For air conditioner chamber's outside environment temperature at t1 moment, the t2 moment, △ t was the time at t2 moment and t1 moment after instant tl
Difference, preferably, △ t is within the scope of 1~30 second.
When the operation of air conditioner refrigeration mode, in conjunction with shown in table 1, by judging MIt crossesWhether be greater than zero, equal to zero be less than
Zero, judge MDifferenceWhether it is greater than zero, equal to zero and less than zero, and judges MRingWhether zero is greater than, equal to zero and less than zero, to air-conditioning
The current working condition of device is judged and is diagnosed that the result judged according to three is different, has different diagnostic results and control
It makes, specifically includes:
When judging result is MIt crossesGreater than zero, MDifferenceGreater than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, and continue to judge whether flow rises, be to continue to judge degree of superheat TIt crossesWhether decline, degree of superheat TIt crossesDecline then promotes compression
Unit frequency, degree of superheat TIt crossesDo not decline, continues to lift up flow；
When judging result is MIt crossesGreater than zero, MDifferenceGreater than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, and continues to test and judge whether outside motor speed declines, and is that then self diagnosis result is air conditioner normal operation,
Otherwise self diagnosis result is heat transfer effect variation, and user is reminded to clean air conditioner；
When judging result is MIt crossesGreater than zero, MDifferenceEqual to zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, continue to judge degree of superheat TIt crossesWhether promoted, be, then promotes flow；No, then flow remains unchanged；
When judging result is MIt crossesGreater than zero, MDifferenceEqual to zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, and continues to judge whether air-conditioner outdoor unit motor speed declines, and is, then self diagnosis result is that air conditioner is run just
Often；It is no, then remind cleaning air conditioner；
When judging result is MIt crossesGreater than zero, MDifferenceLess than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, and by self diagnosis result it is determined as lack of refrigerant in air-conditioner, reminds user's annex solution；
When judging result is MIt crossesGreater than zero, MDifferenceLess than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, continues to judge whether air-conditioner outdoor unit motor speed declines, is, then self diagnosis result is air conditioner normal operation；
It is no, then remind cleaning air conditioner；
When judging result is MIt crossesEqual to zero, MDifferenceGreater than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, and flow and compressor frequency are promoted；
When judging result is MIt crossesEqual to zero, MDifferenceGreater than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, continues to judge whether air-conditioner outdoor unit motor speed declines, is, then self diagnosis result is air conditioner normal operation；
It is no, then remind cleaning air conditioner；
When judging result is MIt crossesEqual to zero, MDifferenceEqual to zero, MRingWhen more than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is normal；
When judging result is MIt crossesEqual to zero, MDifferenceEqual to zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, and continue to judge whether air-conditioner outdoor unit motor speed declines, be, then self diagnosis result is air conditioner normal operation；It is no,
Then remind cleaning air conditioner；
When judging result is MIt crossesEqual to zero, MDifferenceLess than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, and by self diagnosis result it is determined as lack of refrigerant in air-conditioner, reminds user's annex solution；
When judging result is MIt crossesEqual to zero, MDifferenceLess than zero, MRingWhen equal to zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, continue to judge whether motor speed rises on the outside of air conditioner chamber, whether liquid measure declines with whether compressor frequency declines, it is any
Judging result is is that self diagnosis result is air conditioner normal operation, and otherwise self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesEqual to zero, MDifferenceLess than zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often；
When judging result is MIt crossesLess than zero, MDifferenceGreater than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often；
When judging result is MIt crossesLess than zero, MDifferenceGreater than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, continues to judge whether air-conditioner outdoor unit motor speed declines, is, then self diagnosis result is air conditioner normal operation；
It is no, then remind cleaning air conditioner；
When judging result is MIt crossesLess than zero, MDifferenceEqual to zero, MRingWhen more than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is normal；
When judging result is MIt crossesLess than zero, MDifferenceEqual to zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, continue to judge whether air-conditioner outdoor unit motor speed declines, be, then self diagnosis result is air conditioner normal operation；It is no, then
Remind cleaning air conditioner；
When judging result is MIt crossesLess than zero, MDifferenceLess than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, and by self diagnosis result it is determined as lack of refrigerant in air-conditioner, reminds user's annex solution；
When judging result is MIt crossesLess than zero, MDifferenceLess than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is normal.
For example, in cooling mode, current outdoor environment temperature TRingIt is 35 DEG C, Tail Pipe Temperature TRowIt is 80 DEG C, outer machine disk
Tube temperature degree TIt is coldIt is 43 DEG C, interior machine coil temperature TIt steamsIt is 13 DEG C, then discharge superheat TIt crosses=80 DEG C -43 DEG C=37 DEG C, the heat source temperature difference
TDifference=43 DEG C -13 DEG C=30 DEG C.
When with outdoor environment temperature and its conditioners running conditions variation, detection obtains outdoor environment temperature T after 3 secondsRing
It is 36 DEG C, outer machine coil temperature TIt is coldIt is 43 DEG C, interior machine coil temperature TIt steamsIt is 11 DEG C, Tail Pipe Temperature TRowIt is 90 DEG C, discharge superheat
Spend TIt crosses=90 DEG C -43 DEG C=47 DEG C, heat source temperature difference TDifference=43 DEG C -11 DEG C=32 DEG C.
M is calculatedIt crosses=(47 DEG C -37 DEG C)/3s, MDifference=(32 DEG C -30 DEG C)/3s, MRing=(36 DEG C -35 DEG C)/3s.
Learn MIt crossesGreater than zero, MDifferenceGreater than zero, MRingGreater than zero, then air-conditioning self diagnosis result is air conditioner normal operation, and after
It is continuous to judge whether flow rises, it is to continue to judge degree of superheat TIt crossesWhether decline, degree of superheat TIt crossesDecline then promotes compressor frequency,
Degree of superheat TIt crossesDo not decline, continues to lift up flow.
Judging result corresponds to table under 1 cooling condition of table
It is same by judging M in conjunction with shown in table 2 when air conditioner heat-production mode operationIt crossesWhether be greater than zero, be equal to zero with
Less than zero, M is judgedDifferenceWhether it is greater than zero, equal to zero and less than zero, and judges MRingWhether zero is greater than, equal to zero and less than zero, it is right
The current working condition of air conditioner is judged and is diagnosed that the difference of recording a demerit judged according to three has different diagnostic results
With control, specifically include:
When judging result is MIt crossesGreater than zero, MDifferenceGreater than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, and compressor promotion frequency is controlled；
When judging result is MIt crossesGreater than zero, MDifferenceGreater than zero, MRingWhen equal to zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, it continues to test and judges that whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is that air conditioner is run just
Often；No, then self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesGreater than zero, MDifferenceGreater than zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, it and continues to test and judges whether compressor frequency rises, be, then self diagnosis result is air conditioner normal operation；It is no, then certainly
Diagnostic result is air conditioner operation exception；
When judging result is MIt crossesGreater than zero, MDifferenceEqual to zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often；
When judging result is MIt crossesGreater than zero, MDifferenceEqual to zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, continues to test and judges that whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is air conditioner operation
Normally；No, then self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesGreater than zero, MDifferenceLess than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, and self diagnosis result be air conditioner be lack refrigerant；
When judging result is MIt crossesGreater than zero, MDifferenceLess than zero, MRingWhen equal to zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, it is to lack refrigerant, and continue to judge whether motor speed rises on the outside of air conditioner chamber, is that self diagnosis result, which is air conditioner,
Then self diagnosis result is air conditioner normal operation；No, then self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesGreater than zero, MDifferenceLess than zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, it and continues to test and judges whether compressor frequency rises, be, then self diagnosis result is air conditioner normal operation；It is no, then certainly
Diagnostic result is air conditioner operation exception；
When judging result is MIt crossesEqual to zero, MDifferenceGreater than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often, and compressor promotion frequency is controlled；
When judging result is MIt crossesEqual to zero, MDifferenceGreater than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, continues to test and judges that whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is air conditioner operation
Normally；No, then self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesEqual to zero, MDifferenceEqual to zero, MRingWhen more than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is normal；
When judging result is MIt crossesEqual to zero, MDifferenceEqual to zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, it continues to test and judges that whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is that air conditioner is run just
Often；No, then self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesEqual to zero, MDifferenceLess than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, and self diagnosis result is air conditioner to lack refrigerant, reminds user's annex solution；
When judging result is MIt crossesEqual to zero, MDifferenceLess than zero, MRingWhen equal to zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, continuing to test and continuing to judge whether motor speed declines on the outside of air conditioner chamber, whether liquid measure declines is with compressor frequency
No decline, any judging result is is that self diagnosis result is air conditioner normal operation, and otherwise self diagnosis result is air conditioner fortune
Row is abnormal；
When judging result is MIt crossesEqual to zero, MDifferenceLess than zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often；
When judging result is MIt crossesLess than zero, MDifferenceGreater than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner is run just
Often；
When judging result is MIt crossesLess than zero, MDifferenceGreater than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is abnormal, continues to test and judges whether indoor motor revolving speed declines, and is that then self diagnosis result is air conditioner normal operation, is promoted
Indoor motor revolving speed, otherwise self diagnosis result is air conditioner operation exception, reminds cleaning air conditioner；Or, judging outdoor motor revolving speed
Whether decline, is that then self diagnosis result is air conditioner normal operation, promotes outdoor motor revolving speed, otherwise self diagnosis result is air-conditioning
Device is operating abnormally, and reminds cleaning air conditioner；
When judging result is MIt crossesLess than zero, MDifferenceEqual to zero, MRingWhen more than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is normal；
When judging result is MIt crossesLess than zero, MDifferenceEqual to zero, MRingWhen less than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, it continues to test and judges that whether motor speed rises on the outside of air conditioner chamber, is, then self diagnosis result is that air conditioner is run just
Often；No, then self diagnosis result is air conditioner operation exception；
When judging result is MIt crossesLess than zero, MDifferenceLess than zero, MRingWhen greater than zero, air-conditioning self diagnosis result is that air conditioner operation is different
Often, it is to lack refrigerant that self diagnosis result, which is air conditioner, reminds user's annex solution；
When judging result is MIt crossesLess than zero, MDifferenceLess than zero, MRingWhen less than or equal to zero, air-conditioning self diagnosis result is air conditioner fortune
Row is normal.
For example, in a heating mode, current outdoor environment temperature TRingIt is 2 DEG C, Tail Pipe Temperature TRowIt is 60 DEG C, outer machine coil pipe
Temperature TIt is coldIt is 38 DEG C, interior machine coil temperature TIt steamsIt is -6 DEG C, then discharge superheat TIt crosses=60 DEG C -38 DEG C=22 DEG C, heat source temperature difference TDifference
=38 DEG C -6 DEG C=32 DEG C.
Change when with environment temperature and its conditioners running conditions, detects to occur outdoor environment temperature T after 3 secondsRingIt is 1
DEG C, outer machine coil temperature TIt is cold36 DEG C, interior machine coil temperature TIt steamsIt is -10 DEG C, Tail Pipe Temperature TRowIt is 65 DEG C, discharge superheat TIt crosses=
65 DEG C -40 DEG C=25 DEG C, heat source temperature difference TDifference=40 DEG C -10 DEG C=30 DEG C.
M is calculatedIt crosses=(25 DEG C -22 DEG C)/3s, MDifference=(30 DEG C -32 DEG C)/3s, MRing=(1 DEG C -2 DEG C)/3s.
Learn MIt crossesGreater than zero, MDifferenceLess than zero, MRingLess than zero, then air-conditioning self diagnosis result is air conditioner normal operation, then
It continues to test and judges whether compressor frequency rises, be, then self diagnosis result is air conditioner normal operation；It is no, then self diagnosis
As a result it is operating abnormally for air conditioner.
Judging result corresponds to table under 2 heating condition of table
A kind of air conditioner self diagnosis control method provided by the invention is handled by the temperature acquisition in the period, is avoided a
The difference of other data, causes to judge by accident；And by the degree of superheat, the variation tendency of the heat source temperature difference and outdoor environment, first is that grasping current
The temperature variations of inner disc, second is that feedback variation tendency, accurate feedback state of runtime machine carry out prevention in advance；According to disk
The situation of change of the periodic law of the pipe heat source temperature difference and discharge superheat, back-to-back running situation, air conditioner self-check program are reliably steady
It is fixed.
Optionally, also can be used temperature difference variation, such as current coil temperature be less than initial baseline temperature Δ T, then into
Row determines the situation of change of temperature, feedback refrigeration or heating effect, reaches self-test effect, initial baseline temperature Δ T 11~
Within the scope of 15 DEG C, for example, in cooling mode, current inner coil pipe temperature is 13 DEG C, belong to normally, if current inner coil pipe temperature is
10 DEG C, then it is slightly poor to feed back refrigeration effect, realizes self-test.
Optionally, the variation slope value substitution discharge superheat T of muffler temperature also can be usedIt crosses, such as current outdoor environment
It is temperature-resistant, the variation slope of muffler temperature is detected, when slope positive change, shows that the degree of superheat increases, it is on the contrary then show
The degree of superheat reduces, and further according to degree of superheat situation of change, realizes self-test, feeds back cooling or heating effect.
The present invention also provides a kind of air conditioner self-diagnosis systems, for realizing air conditioner self diagnosis controlling party described above
Method, comprising:
Acquiring unit, the acquiring unit is for obtaining machine coil temperature T in currentIt steams, outer machine coil temperature TIt is cold, exhaust pipe
Temperature TRowWith outdoor environment temperature TRing；
Computing unit, the computing unit are used for according to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith
The Tail Pipe Temperature TRow, calculate discharge superheat TIt crossesWith heat source temperature difference TDifference；
According to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate change rate MIt crosses、
MDifferenceWith MRing；
Control unit, described control unit are used for according to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis is carried out to current air-conditioning
Control.
A kind of air conditioner is also provided, the air conditioner include be stored with computer program computer readable storage medium and
Processor when the computer program is read and run by the processor, realizes self diagnosis control method described above.
The present invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has computer
Program when the computer program is read out by the processor and runs, realizes self diagnosis control method described above.
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 (21)
1. a kind of air conditioner self diagnosis control method characterized by comprising
Obtain machine coil temperature T in currentIt steams, outer machine coil temperature TIt is cold, Tail Pipe Temperature TRowWith outdoor environment temperature TRing；
According to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith the Tail Pipe Temperature TRow, calculate discharge superheat
Spend TIt crossesWith heat source temperature difference TDifference；
According to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate change rate MIt crosses、MDifferenceWith
MRing；
According to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis control is carried out to current air-conditioning.
2. self diagnosis control method as described in claim 1, which is characterized in that run pressure ratio value by air conditioner and replace heat source
Temperature difference TDifference, calculate change rate MThan, and in conjunction with the MIt crossesWith the MRing, self diagnosis control is carried out to current air-conditioning.
3. self diagnosis control method as described in claim 1, which is characterized in that the MIt crosses=(TCross 2-TCross 1)/△ t, the TCross 2
For t2The discharge superheat at moment, the TCross 1For t1The discharge superheat at moment；
The MDifference=(TPoor 2-TPoor 1)/△ t, the TPoor 2For t2The heat source temperature difference at moment, the TPoor 1For t1The heat source temperature difference at moment；
The MRing=(TRing 2-TRing 1)/△ t, the TRing 2For t2Air conditioner chamber's outside environment temperature at moment, the TRing 1For t1Moment
Air conditioner chamber's outside environment temperature；
The △ t is t2Moment and t1The time difference at moment.
4. self diagnosis control method as claimed in claim 3, which is characterized in that the △ t is within the scope of 1~30 second.
5. self diagnosis control method as described in claim 1, which is characterized in that in air conditioner refrigerating mode operation, under satisfaction
Stating either condition, then self diagnosis result is air conditioner normal operation, and being unsatisfactory for any of the above-described condition, then self diagnosis result is air conditioner
It is operating abnormally:
The MIt crossesGreater than zero and the MDifferenceMore than or equal to zero and the MRingGreater than zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceGreater than zero and the MRingGreater than zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceEqual to zero and the MRingMore than or equal to zero；
Or, the MIt crossesEqual to zero and the MDifferenceLess than zero and the MRingLess than zero；
Or, the MIt crossesLess than zero and the MDifferenceLess than zero and the MRingLess than or equal to zero.
6. self diagnosis control method as claimed in claim 5, which is characterized in that in air conditioner refrigerating mode operation, under satisfaction
Stating condition, then self diagnosis result is air conditioner normal operation, and continues to judge whether flow rises, and is to continue to judge the degree of superheat
TIt crossesWhether decline, degree of superheat TIt crossesDecline then promotes compressor frequency, degree of superheat TIt crossesDo not decline, continue to lift up flow:
The MIt crossesGreater than zero and the MDifferenceGreater than zero and the MRingGreater than zero.
7. self diagnosis control method as claimed in claim 5, which is characterized in that in air conditioner refrigerating mode operation, under satisfaction
Stating condition, then self diagnosis result is air conditioner normal operation, and continues to judge degree of superheat TIt crossesWhether promoted, be, then promotes flow:
The MIt crossesGreater than zero and the MDifferenceEqual to zero and the MRingGreater than zero.
8. self diagnosis control method as claimed in claim 5, which is characterized in that in air conditioner refrigerating mode operation, under satisfaction
Stating condition, then self diagnosis result is air conditioner normal operation, and promotes flow and compressor frequency:
The MIt crossesEqual to zero and the MDifferenceGreater than zero and the MRingGreater than zero.
9. self diagnosis control method as described in claim 1, which is characterized in that in air conditioner refrigerating mode operation, under satisfaction
It states either condition then to continue to judge whether air-conditioner outdoor unit motor speed declines, is, then self diagnosis result is air conditioner operation
Normally；It is no, then remind cleaning air conditioner:
The MIt crossesGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceEqual to zero and the MRingLess than zero；
Or, the MIt crossesLess than zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesEqual to zero and the MDifferenceLess than zero and the MRingEqual to zero.
10. self diagnosis control method as described in claim 1, which is characterized in that in air conditioner refrigerating mode operation, under satisfaction
Stating condition, then self diagnosis result is lack of refrigerant in air-conditioner:
The MDifferenceLess than zero and the MRingGreater than zero.
11. self diagnosis control method as described in claim 1, which is characterized in that in air-conditioning heating mode operation, under satisfaction
Stating either condition, then self diagnosis result is air conditioner normal operation, and otherwise self diagnosis result is air conditioner operation exception:
The MDifferenceGreater than zero and the MRingGreater than zero；
Or, the MIt crossesGreater than zero and the MRingLess than zero；
Or, the MIt crossesGreater than zero and the MDifferenceEqual to zero and the MRingGreater than zero；
Or, the MIt crossesLess than or equal to the equal and MDifferenceEqual to zero and the MRingMore than or equal to zero；
Or, the MIt crossesLess than or equal to zero and the MDifferenceLess than zero and the MRingLess than zero；
Or, the MIt crossesLess than zero and the MDifferenceLess than or equal to zero and the MRingEqual to zero；
Or, the MIt crossesEqual to zero and the MDifferenceEqual to zero and the MRingMore than or equal to zero；
Or, the MIt crossesLess than zero and the MDifferenceEqual to zero and the MRingGreater than zero.
12. self diagnosis control method as claimed in claim 11, which is characterized in that in air-conditioning heating mode operation, meet
Then self diagnosis result is air conditioner normal operation to following conditions, and continues to control compressor promotion frequency:
The MIt crossesMore than or equal to zero and the MDifferenceGreater than zero and the MRingGreater than zero.
13. self diagnosis control method as claimed in claim 11, which is characterized in that in air-conditioning heating mode operation, meet
Then self diagnosis result is air conditioner normal operation to following conditions, and continues to judge whether compressor frequency rises, and is, then self diagnosis
It as a result is air conditioner normal operation；No, then self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceMore than or equal to zero and the MRingLess than zero.
14. self diagnosis control method as described in claim 1, which is characterized in that in air-conditioning heating mode operation, under satisfaction
Stating either condition, then self diagnosis result is air conditioner operation exception, continues to judge whether motor speed rises on the outside of air conditioner chamber,
It is that then self diagnosis result is air conditioner normal operation；No, then self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceMore than or equal to zero and the MRingEqual to zero；
Or, the MIt crossesEqual to zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero；
Or, the MIt crossesMore than or equal to zero and the MDifferenceEqual to zero and the MRingLess than zero.
15. self diagnosis control method as described in claim 1, which is characterized in that in air-conditioning heating mode operation, under satisfaction
State condition then self diagnosis result be air conditioner be lack refrigerant:
The MDifferenceLess than zero and the MRingGreater than zero.
16. self diagnosis control method as described in claim 1, which is characterized in that in air-conditioning heating mode operation, under satisfaction
State condition then self diagnosis result be air conditioner be lack refrigerant, and continue to judge on the outside of air conditioner chamber motor speed whether on
It rises, is, then self diagnosis result is air conditioner normal operation；No, then self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceLess than zero and the MRingEqual to zero.
17. self diagnosis control method as described in claim 1, which is characterized in that in air-conditioning heating mode operation, under satisfaction
Stating condition, then self diagnosis result is air conditioner operation exception, and continues to judge whether motor speed declines on the outside of air conditioner chamber, liquid
Amount whether decline with whether compressor frequency declines, any judging result be that self diagnosis result is air conditioner normal operation,
Otherwise self diagnosis result is air conditioner operation exception:
The MIt crossesGreater than zero and the MDifferenceLess than zero and the MRingEqual to zero.
18. self diagnosis control method as described in claim 1, which is characterized in that in air-conditioning heating mode operation, under satisfaction
Stating condition, then self diagnosis result is that air conditioner is operating abnormally, and continues to judge whether indoor motor revolving speed declines, and is then self diagnosis
As a result it is air conditioner normal operation, promotes indoor motor revolving speed, otherwise self diagnosis result is air conditioner operation exception, reminds air-conditioning
Cleaning；Or, continuing to judge whether outdoor motor revolving speed declines, it is that then self diagnosis result is air conditioner normal operation, is promoted outdoor
Motor speed, otherwise self diagnosis result is air conditioner operation exception, reminds cleaning air conditioner:
The MIt crossesLess than zero and the MDifferenceGreater than zero and the MRingLess than or equal to zero.
19. a kind of air conditioner self-diagnosis system characterized by comprising
Acquiring unit, the acquiring unit is for obtaining machine coil temperature T in currentIt steams, outer machine coil temperature TIt is cold, Tail Pipe Temperature
TRowWith outdoor environment temperature TRing；
Computing unit, the computing unit are used for according to the interior machine coil temperature TIt steams, the outer machine coil temperature TIt is coldWith it is described
Tail Pipe Temperature TRow, calculate discharge superheat TIt crossesWith heat source temperature difference TDifference；
According to the discharge superheat TIt crosses, the heat source temperature difference TDifferenceWith the outdoor environment temperature TRing, calculate change rate MIt crosses、MDifferenceWith
MRing；
Control unit, described control unit are used for according to the change rate MIt crosses、MDifferenceWith MRing, self diagnosis control is carried out to current air-conditioning
System.
20. 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 methods of claim 1-18.
21. 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 methods of claim 1-18.
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