CN109556232A - Four-way valve abnormality detection method and device and air conditioning unit - Google Patents
Four-way valve abnormality detection method and device and air conditioning unit Download PDFInfo
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- CN109556232A CN109556232A CN201811237537.4A CN201811237537A CN109556232A CN 109556232 A CN109556232 A CN 109556232A CN 201811237537 A CN201811237537 A CN 201811237537A CN 109556232 A CN109556232 A CN 109556232A
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- 238000001514 detection method Methods 0.000 title claims abstract description 118
- 230000005856 abnormality Effects 0.000 title claims description 20
- 238000004378 air conditioning Methods 0.000 title abstract description 3
- 230000002159 abnormal effect Effects 0.000 claims abstract description 186
- 238000000034 method Methods 0.000 claims abstract description 50
- 238000012423 maintenance Methods 0.000 claims abstract description 15
- 238000013024 troubleshooting Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000012544 monitoring process Methods 0.000 claims description 14
- 239000003507 refrigerant Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 101100425597 Solanum lycopersicum Tm-1 gene Proteins 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a four-way valve abnormity detection method, a four-way valve abnormity detection device and an air conditioning unit, wherein the method comprises the following steps: after the four-way valve is monitored to be switched, judging whether the four-way valve is abnormal in switching according to a preset judgment condition; when the four-way valve is abnormally reversed, accumulating the failure times of the four-way valve and performing four-way valve failure treatment; and accumulating the reversing times of the four-way valve, and adjusting the preset judgment condition according to the failure times and the reversing times. The invention solves the problem that the four-way valve in the prior art cannot be detected and processed in time when the reversing is abnormal, improves the operation reliability of the heat pump unit, and simultaneously reduces the failure rate and the maintenance rate of the heat pump unit.
Description
Technical field
The present invention relates to four-way valve technical fields, in particular to a kind of four-way valve method for detecting abnormality, device and sky
Adjust unit.
Background technique
In recent years, weather conditions, national policy and Energy Consumption Factors, heat pump market development are rapid.Most heat pumps produce
Product realize the switching of cooling and warming using four-way valve, and there are defrost when low-temperature heating, four-way Vavle switching is more frequent.Four-way valve is
Differential pressure drive valve drives pilot valve to change the friction that piston two sides pressure difference pushes piston overpowers slide valve by coil blackout/power on
Resistance completes commutation work, will result in the situation not in place that can not commutate or commutate when system pressure difference deficiency.Air-conditioning simultaneously
The situation not in place that can not commutate or commutate is caused in foreign matter in system, such as weldering bits, wear particle entrance four-way valve.Four-way
Valve commutation is abnormal to cause unit to be unable to operate normally, and influences user's use, if unit does not do corresponding failure, protection even can be freezing
Unit pipeline, heat exchanger, maintenance capacity are huge.
Aiming at the problem that cannot detecting and handle in time when four-way valve in the related technology commutates abnormal, not yet propose have at present
Effect ground solution.
Summary of the invention
The present invention provides a kind of four-way valve method for detecting abnormality, device and air-conditioner sets, at least to solve the prior art
The problem of cannot detecting and handle in time when middle four-way valve commutation exception.
In order to solve the above technical problems, according to an aspect of an embodiment of the present invention, providing a kind of four-way valve inspection extremely
Survey method, comprising: after monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment；In four-way
When valve commutation is abnormal, add up the number of stoppages of four-way valve, and carries out four-way valve troubleshooting；The commutation number of accumulative four-way valve,
Default Rule of judgment is adjusted according to the number of stoppages and commutation number.
Further, monitoring four-way valve commutation, comprising: whether detection unit meets four-way valve commutation condition；Wherein, in machine
When group meets four-way valve commutation condition, four-way valve commutation.
Further, four-way valve commutation condition includes following one: into heating mode, into defrost pattern, exiting
White mode.
Further, judge whether four-way valve commutates exception according to default Rule of judgment, comprising: at interval of default detection week
Phase, detection commutation abnormal determination parameter；According to commutation abnormal determination parameter and four-way valve commutation condition, determine whether four-way valve changes
To exception.
Further, commutation abnormal determination parameter includes following one: the first critical parameter: refrigerant liquid pipe temperature sensing package temperature
The difference △ T1 of Ty and defrost temperature sensing package temperature Th；Wherein, △ T1=Ty-Th is the first judgement in commutation abnormal determination parameter
When parameter, presetting detection cycle is the first default detection cycle；Second critical parameter: water inlet temperature sensing package temperature Tj and water outlet temperature-sensitive
The difference △ T2 of packet temperature Tc；Wherein, △ T2=Tj-Tc presets inspection when the abnormal determination parameter that commutates is the second critical parameter
The survey period is the second default detection cycle；Third critical parameter: changing value △ T3 of the room temperature in detection cycle；Wherein, △
The room temperature that T3=Tm-Tm-1, Tm obtain for the m times detection, the room temperature that Tm-1 obtains for the m-1 times detection, the m times
The time phase difference of detection and the m-1 times detection presets detection cycle, when the abnormal determination parameter that commutates is third critical parameter, in advance
If detection cycle is that third presets detection cycle.
Further, when the abnormal determination parameter that commutates is the first critical parameter, according to commutation abnormal determination parameter and four
Port valve commutates condition, determines whether four-way valve commutates exception, comprising: in four-way valve commutation condition is into heating mode or to exit
Defrost pattern, and when △ T1≤0, determine that four-way valve commutation is abnormal；When four-way valve commutation condition is into defrost pattern, and △
When T1 >=0, determine that four-way valve commutation is abnormal.
Further, when the abnormal determination parameter that commutates is the second critical parameter, according to commutation abnormal determination parameter and four
Port valve commutates condition, determines whether four-way valve commutates exception, comprising: in four-way valve commutation condition is into heating mode or to exit
Defrost pattern, and when △ T2≤0, determine that four-way valve commutation is abnormal；It is into defrost pattern, and △ T2 in four-way valve commutation condition
When >=0, determine that four-way valve commutation is abnormal.
Further, when the abnormal determination parameter that commutates is third critical parameter, according to commutation abnormal determination parameter and four
Port valve commutates condition, determines whether four-way valve commutates exception, comprising: in four-way valve commutation condition is into heating mode or to exit
Defrost pattern, and when △ T3≤0, determine that four-way valve commutation is abnormal；When four-way valve commutation condition is into defrost pattern, according to
Second critical parameter determines whether four-way valve commutates exception, in △ T2 >=0, determines that four-way valve commutation is abnormal.
Further, default Rule of judgment is adjusted according to the number of stoppages and commutation number, comprising: whether judge commutation number
Reach preset value；When the number that commutates reaches preset value, abnormal rate is calculated according to the number of stoppages and commutation number；According to abnormal rate
Adjust default Rule of judgment.
Further, abnormal rate is calculated by the following formula: abnormal rate m=x/n, wherein x is the failure time of four-way valve
Number, n are the commutation number of four-way valve.
Further, when the abnormal determination parameter that commutates is the first critical parameter, item is judged according to abnormal rate adjustment is default
Part, comprising: in abnormal rate=0, commutation abnormal determination parameter is adjusted to the second critical parameter, default detection cycle is adjusted
For the second default detection cycle；In 0 < abnormal rate≤a, commutate abnormal determination parameter constant, and default detection cycle is adjusted to
The 1/2 of first default detection cycle；In abnormal rate > a, user is notified to carry out after-sales service.
Further, when the abnormal determination parameter that commutates is the second critical parameter, item is judged according to abnormal rate adjustment is default
Part, comprising: in abnormal rate=0, commutation abnormal determination parameter is adjusted to third critical parameter, default detection cycle is adjusted
Detection cycle is preset for third；In 0 < abnormal rate≤a, commutate abnormal determination parameter constant, and default detection cycle is adjusted to
2 times of second default detection cycle；In abnormal rate m > a, wherein a is default abnormal rate threshold value, by commutation abnormal determination ginseng
Number is adjusted to the first critical parameter, and default detection cycle is adjusted to the 1/2 of the first default detection cycle.
Further, when the abnormal determination parameter that commutates is third critical parameter, item is judged according to abnormal rate adjustment is default
Part, comprising: in abnormal rate=0, commutate abnormal determination parameter constant, and default detection cycle is adjusted to third default detection week
2 times of phase；In 0 < abnormal rate≤a, commutation abnormal determination parameter is adjusted to the second critical parameter, by default detection cycle
It is adjusted to the second default detection cycle；In abnormal rate > a, commutation abnormal determination parameter is adjusted to the first critical parameter, it will
Default detection cycle is adjusted to the 1/2 of the first default detection cycle.
Further, judge whether four-way valve commutates exception according to default Rule of judgment, comprising: sentence according to default for the first time
When broken strip part judges whether four-way valve commutates abnormal, using the second critical parameter as commutation abnormal determination parameter, second is preset
Detection cycle is as default detection cycle.
Further, four-way valve troubleshooting includes: again whether detection four-way valve commutates success；Four-way valve commutation at
When function, four-way valve troubleshooting is exited, enables the number of stoppages x=x-1 of four-way valve；In four-way valve commutation failure, again to four
Port valve sends commutation signal.
Further, after sending commutation signal to four-way valve again, further includes: detect whether four-way valve commutates again
Success；When four-way valve commutates successfully, four-way valve troubleshooting is exited；In four-way valve commutation failure, the failure of four-way valve is enabled
Number x=x+1 increases the commutation pressure difference of four-way valve, sends commutation signal to four-way valve again.
Further, in the commutation pressure difference for increasing four-way valve, after sending commutation signal to four-way valve again, further includes:
Again whether detection four-way valve commutates success；When four-way valve commutates successfully, four-way valve troubleshooting is exited；It commutates in four-way valve
When failure, the number of stoppages x=x+1 of four-way valve is enabled, reset itself sends commutation signal to four-way valve again.
Further, in reset itself, after sending commutation signal to four-way valve again, further includes: detect four again
Whether port valve commutates success；When four-way valve commutates successfully, four-way valve troubleshooting is exited；In four-way valve commutation failure, enable
The number of stoppages x=x+1 of four-way valve is shut down, and user is notified to carry out after-sales service.
Further, whether detection four-way valve commutates success again, comprising: continuous preset failure detection cycle detects cold
The difference △ T1 of matchmaker's liquid pipe temperature sensing package temperature Ty and defrost temperature sensing package temperature Th；Wherein, △ T1=Ty-Th；According to △ T1 and four
Port valve commutates condition, judges whether four-way valve commutates success；It wherein, is into heating mode or to exit in four-way valve commutation condition
Defrost pattern, and when △ T1 > 0, determine that four-way valve commutates successfully；When four-way valve commutation condition is into defrost pattern, and △
When T1 < 0, determine that four-way valve commutates successfully.
Further, the commutation pressure difference for increasing four-way valve includes: to control the frequency of compressor at interval of the first preset time
Increase predeterminated frequency, until default maximum frequency values；And at interval of the second preset time, the aperture for controlling four-way valve reduces in advance
If aperture, until default minimum opening value.
Further, after compressor is restarted, further includes: adjust the frequency of compressor to default maximum frequency values, adjust
The aperture of four-way valve is saved to default minimum opening value.
According to another aspect of an embodiment of the present invention, a kind of four-way valve abnormal detector is provided, comprising: judge mould
Block, for judging whether four-way valve commutates exception according to default Rule of judgment after monitoring four-way valve commutation；Processing module,
For adding up the number of stoppages of four-way valve when four-way valve commutates abnormal, and carry out four-way valve troubleshooting；Module is adjusted, is used
In the commutation number of accumulative four-way valve, default Rule of judgment is adjusted according to the number of stoppages and commutation number.
Another aspect according to an embodiment of the present invention, provides a kind of air-conditioner set, abnormal including such as above-mentioned four-way valve
Detection device.
Another aspect according to an embodiment of the present invention, provides a kind of computer equipment, including memory, processor and deposits
The computer program that can be run on a memory and on a processor is stored up, the processor is realized when executing described program as above-mentioned
Four-way valve method for detecting abnormality.
Another aspect according to an embodiment of the present invention provides a kind of storage medium comprising computer executable instructions,
The computer executable instructions by computer processor when being executed for executing such as above-mentioned four-way valve method for detecting abnormality.
In the present invention, automatic detection and the automatic maintenance scheme under a kind of four-way valve abnormal conditions are provided, is being monitored
To after four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment, when four-way valve commutates abnormal, progress
Four-way valve troubleshooting simultaneously adjusts default Rule of judgment.Through the above scheme, four-way valve in the prior art is efficiently solved to change
The problem of cannot detecting and handle in time when to exception, promotes heat pump unit operational reliability, while reducing unit failure rate
And maintenance rate.
Detailed description of the invention
Fig. 1 is a kind of optional flow chart of four-way valve method for detecting abnormality according to an embodiment of the present invention；
Fig. 2 is a kind of optional system block diagram of heat pump unit according to an embodiment of the present invention；
Fig. 3 is a kind of optional sectional view of four-way valve according to an embodiment of the present invention；
Fig. 4 is the optional flow chart of another kind of four-way valve method for detecting abnormality according to an embodiment of the present invention；
Fig. 5 is another optional flow chart of four-way valve method for detecting abnormality according to an embodiment of the present invention；
Fig. 6 is another optional flow chart of four-way valve method for detecting abnormality according to an embodiment of the present invention；
Fig. 7 is a kind of optional flow chart of four-way valve fault handling method according to an embodiment of the present invention；And
Fig. 8 is a kind of optional structural block diagram of four-way valve abnormal detector according to an embodiment of the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Embodiment 1
A kind of four-way valve method for detecting abnormality is provided in the preferred embodiment of the invention 1, this method can be answered directly
With on extremely various four-way valves.Specifically, Fig. 1 shows a kind of optional flow chart of this method, as shown in Figure 1, this method packet
Include following steps S102-S106:
S102: after monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment；
S104: when four-way valve commutates abnormal, add up the number of stoppages of four-way valve, and carry out four-way valve troubleshooting；
S106: the commutation number of accumulative four-way valve adjusts default Rule of judgment according to the number of stoppages and commutation number.
In the above-described embodiment, automatic detection and the automatic maintenance scheme under a kind of four-way valve abnormal conditions are provided,
After monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment, four-way valve commutation extremely
When, it carries out four-way valve troubleshooting and adjusts default Rule of judgment.Through the above scheme, in the prior art four are efficiently solved
The problem of port valve commutation cannot be detected and be handled in time when abnormal, promotes heat pump unit operational reliability, while reducing unit
Failure rate and maintenance rate.
Further, monitoring four-way valve commutation, comprising: whether detection unit meets four-way valve commutation condition；Wherein, in machine
When group meets four-way valve commutation condition, four-way valve commutation.Four-way valve commutate condition include following one: enter heating mode, into
Enter defrost pattern, exit defrost pattern.Because most of unit design is that four-way valve coil does not power on when freezing, four-way valve commutation is only
Commutation is powered on when appearing in heating operation, after booting and enters defrost, exit defrost commutation, is the condition of four-way valve commutation.
In one preferred embodiment of the invention, judge whether four-way valve commutates exception according to default Rule of judgment,
It include: at interval of default detection cycle, detection commutation abnormal determination parameter；According to commutation abnormal determination parameter and four-way valve commutation
Condition determines whether four-way valve commutates exception.
Preferably, commutation abnormal determination parameter includes following one:
First critical parameter: the difference △ T1 of refrigerant liquid pipe temperature sensing package temperature Ty and defrost temperature sensing package temperature Th；Wherein, △
T1=Ty-Th, when the abnormal determination parameter that commutates is the first critical parameter, presetting detection cycle is the first default detection cycle；
Attached drawing 2 gives the common system block diagram of heat pump unit, as shown in Fig. 2, system includes four-way valve, environment temperature-sensitive
Packet, defrost temperature sensing package, liquid pipe temperature sensing package, tracheae temperature sensing package, water inlet temperature sensing package, water outlet temperature sensing package etc..Attached drawing 3 gives four-way valve
Sectional view,
Embodying after four-way valve commutation exception most is exactly directly refrigerant tracheal fluid tube temperature degree and defrost temperature anomaly.Heating
When, four-way valve DE pipe is connected, and CS pipe is connected, and indoor heat exchanger is condenser, and refrigerant tracheae liquid pipe temperature sensing package detects high temperature and pressure
Refrigerant temperature, outdoor heat exchanger are evaporator, and defrost temperature sensing package detects low-temp low-pressure refrigerant temperature；When refrigeration (or heating defrost
When), four-way valve CD pipe is connected, and ES pipe is connected, and indoor heat exchanger is evaporator, and refrigerant tracheae liquid pipe temperature sensing package detects low-temp low-pressure
Refrigerant temperature, outdoor heat exchanger are condenser, and defrost temperature sensing package detects high temperature and pressure refrigerant temperature.By refrigerant liquid pipe temperature sensing package value
The difference △ T1=Ty-Th of Ty and defrost temperature sensing package Th can be set as abnormal first decision condition of four-way valve, detection cycle
For 10s.
Second critical parameter: the water inlet temperature sensing package temperature Tj and difference △ T2 for being discharged temperature sensing package temperature Tc；Wherein, △ T2=
Tj-Tc, when the abnormal determination parameter that commutates is the second critical parameter, presetting detection cycle is the second default detection cycle；
Four-way valve commutation is abnormal to be embodied in inlet and outlet temperature exception indirectly.When heating, indoor heat exchanger is water heating, water inlet
Temperature < leaving water temperature；When refrigeration, indoor heat exchanger water is cooling, inflow temperature > leaving water temperature.To intake temperature sensing package value Tj
As abnormal second decision condition of four-way valve, detection cycle can be set difference △ T2=Tj-Tc with water outlet temperature sensing package value Tc
For 1min.
Third critical parameter: changing value △ T3 of the room temperature in detection cycle；Wherein, △ T3=Tm-Tm-1, Tm
The room temperature that m detection obtains, Tm-1 are the room temperature that the m-1 times detection obtains, and the m times detection is detected with the m-1 times
Time phase difference preset detection cycle, commutate abnormal determination parameter be third critical parameter when, preset detection cycle be third
Default detection cycle.
Four-way valve commutation is abnormal to be finally embodied in room temperature exception.When heating, indoor actual temperature raising or constant；System
When cold, indoor actual temperature reduction or constant.Room temperature 1min change rate △ T3=Tn-Tn-1 is done into most four-way valve abnormal the
Three decision conditions, detection cycle can be set to 10min.
For unit history four-way valve abnormal conditions, the Rule of judgment of unit four-way valve exception is determined.Three kinds of decision conditions
Response speed is different, and first is most fast, and third is most slow, it is therefore an objective to when commutation is abnormal occurs more frequent, quick response, and stoppage protection
Unit, that a situation arises is less or even almost without occurring when abnormal, allow four-way valve commutate pressure difference deficiency when have certain delay,
It commutates after pressure difference is accumulative, does not report failure not shut down, guarantee that unit is run steadily in the long term.
In presently preferred embodiment, presets according to the number of stoppages and commutation number adjustment and judge item
Part, comprising: judge whether commutation number reaches preset value；When the number that commutates reaches preset value, according to the number of stoppages and commutation
Number calculates abnormal rate；Default Rule of judgment is adjusted according to abnormal rate.Abnormal rate is calculated by the following formula: abnormal rate m=x/
N, wherein x is the number of stoppages of four-way valve, and n is the commutation number of four-way valve.
Wherein, when the abnormal determination parameter that commutates is the first critical parameter, according to commutation abnormal determination parameter and four-way valve
Commutation condition determines whether four-way valve commutates exception, comprising: in four-way valve commutation condition is into heating mode or to exit defrost
Mode, and when △ T1≤0, determine that four-way valve commutation is abnormal；When four-way valve commutation condition is into defrost pattern, and △ T1 >=
When 0, determine that four-way valve commutation is abnormal.
Further, when the abnormal determination parameter that commutates is the first critical parameter, item is judged according to abnormal rate adjustment is default
Part, comprising: in abnormal rate=0, commutation abnormal determination parameter is adjusted to the second critical parameter, default detection cycle is adjusted
For the second default detection cycle；In 0 < abnormal rate≤a, commutate abnormal determination parameter constant, and default detection cycle is adjusted to
The 1/2 of first default detection cycle；In abnormal rate > a, user is notified to carry out after-sales service.As shown in Figure 4.
Wherein, when the abnormal determination parameter that commutates is the second critical parameter, according to commutation abnormal determination parameter and four-way valve
Commutation condition determines whether four-way valve commutates exception, comprising: in four-way valve commutation condition is into heating mode or to exit defrost
Mode, and when △ T2≤0, determine that four-way valve commutation is abnormal；It is into defrost pattern, and T2 >=0 △ in four-way valve commutation condition
When, determine that four-way valve commutation is abnormal.
Further, when the abnormal determination parameter that commutates is the second critical parameter, item is judged according to abnormal rate adjustment is default
Part, comprising: in abnormal rate=0, commutation abnormal determination parameter is adjusted to third critical parameter, default detection cycle is adjusted
Detection cycle is preset for third；In 0 < abnormal rate≤a, commutate abnormal determination parameter constant, and default detection cycle is adjusted to
2 times of second default detection cycle；In abnormal rate m > a, wherein a is default abnormal rate threshold value, by commutation abnormal determination ginseng
Number is adjusted to the first critical parameter, and default detection cycle is adjusted to the 1/2 of the first default detection cycle.As shown in Figure 5.
Wherein, when the abnormal determination parameter that commutates is third critical parameter, according to commutation abnormal determination parameter and four-way valve
Commutation condition determines whether four-way valve commutates exception, comprising: in four-way valve commutation condition is into heating mode or to exit defrost
Mode, and when △ T3≤0, determine that four-way valve commutation is abnormal；When four-way valve commutation condition is into defrost pattern, according to second
Critical parameter determines whether four-way valve commutates exception, in △ T2 >=0, determines that four-way valve commutation is abnormal.
Further, when the abnormal determination parameter that commutates is third critical parameter, item is judged according to abnormal rate adjustment is default
Part, comprising: in abnormal rate=0, commutate abnormal determination parameter constant, and default detection cycle is adjusted to third default detection week
2 times of phase；In 0 < abnormal rate≤a, commutation abnormal determination parameter is adjusted to the second critical parameter, by default detection cycle
It is adjusted to the second default detection cycle；In abnormal rate > a, commutation abnormal determination parameter is adjusted to the first critical parameter, it will
Default detection cycle is adjusted to the 1/2 of the first default detection cycle.As shown in Figure 6.
Third decision condition detection cycle 10min, the time is longer, and the defrost time is usually no more than 5min, so with third
When condition criterion, commutates into defrost and determined with second condition.
In another preferred embodiment of the invention, it is different to judge whether four-way valve commutates according to default Rule of judgment
Often, comprising: when judging whether four-way valve commutates abnormal according to default Rule of judgment for the first time, using the second critical parameter as commutation
Abnormal determination parameter, using the second default detection cycle as default detection cycle.I.e. after booting operation for the first time, with second condition
Judge four-way valve exception, period and judge parameter that next time checks determined according to abnormal rate later, circulation carry out abnormality detection with
Processing.
In another preferred embodiment of the invention, above-mentioned four-way valve fault handling method is provided, such as Fig. 7 institute
Show, comprising: detect whether four-way valve commutates success again；When four-way valve commutates successfully, four-way valve troubleshooting is exited, enables four
The number of stoppages x=x-1 of port valve；In four-way valve commutation failure, commutation signal is sent to four-way valve again.
Further, after sending commutation signal to four-way valve again, further includes: detect whether four-way valve commutates again
Success；When four-way valve commutates successfully, four-way valve troubleshooting is exited；In four-way valve commutation failure, the failure of four-way valve is enabled
Number x=x+1 increases the commutation pressure difference of four-way valve, sends commutation signal to four-way valve again.
Further, in the commutation pressure difference for increasing four-way valve, after sending commutation signal to four-way valve again, further includes:
Again whether detection four-way valve commutates success；When four-way valve commutates successfully, four-way valve troubleshooting is exited；It commutates in four-way valve
When failure, the number of stoppages x=x+1 of four-way valve is enabled, reset itself sends commutation signal to four-way valve again.
Further, in reset itself, after sending commutation signal to four-way valve again, further includes: detect four again
Whether port valve commutates success；When four-way valve commutates successfully, four-way valve troubleshooting is exited；In four-way valve commutation failure, enable
The number of stoppages x=x+1 of four-way valve is shut down, and user is notified to carry out after-sales service.
Wherein, whether detection four-way valve commutates success again, comprising: continuous preset failure detection cycle, such as 30s, inspection
Survey the difference △ T1 of refrigerant liquid pipe temperature sensing package temperature Ty and defrost temperature sensing package temperature Th；Wherein, △ T1=Ty-Th；According to △ T1
It commutates condition with four-way valve, judges whether four-way valve commutates success；Wherein, four-way valve commutation condition be into heating mode or
Defrost pattern is exited, and when △ T1 > 0, determines that four-way valve commutates successfully；When four-way valve commutation condition is into defrost pattern,
And when △ T1 < 0, determine that four-way valve commutates successfully.
Preferably, the commutation pressure difference for increasing four-way valve includes: to control compressor at interval of the first preset time, such as 2s
Frequency increase predeterminated frequency, such as 1Hz, until default maximum frequency values, such as 80% maximum frequency；And at interval of second
Preset time, such as 1s, the aperture for controlling four-way valve reduce default aperture, such as 2B, until default minimum opening value, such as most
Small step number.
Further, after compressor is restarted, further includes: adjust the frequency of compressor to default maximum frequency values, example
Such as 80% maximum frequency, the aperture of four-way valve is adjusted to default minimum opening value.
Successfully through the commutation of abnormality processing process, the accumulative number of stoppages is recorded, abnormality detection process is returned to；It can not still change
To, disorderly closedown is reported, user is reminded to contact after-sales service.
Embodiment 2
The four-way valve method for detecting abnormality provided in 1 based on the above embodiment, also mentions in the preferred embodiment of the invention 2
A kind of four-way valve abnormal detector is supplied, specifically, Fig. 8 shows a kind of optional structural block diagram of the device, such as Fig. 8 institute
Show, which includes:
Judgment module 802, for judging whether four-way valve changes according to default Rule of judgment after monitoring four-way valve commutation
To exception；
Processing module 804 is connect with judgment module 802, for adding up the failure of four-way valve when four-way valve commutates abnormal
Number, and carry out four-way valve troubleshooting；
Adjust module 806, connect with processing module 804, for adding up the commutation number of four-way valve, according to the number of stoppages with
The number that commutates adjusts default Rule of judgment.
In the above-described embodiment, automatic detection and the automatic maintenance scheme under a kind of four-way valve abnormal conditions are provided,
After monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment, four-way valve commutation extremely
When, it carries out four-way valve troubleshooting and adjusts default Rule of judgment.Through the above scheme, in the prior art four are efficiently solved
The problem of port valve commutation cannot be detected and be handled in time when abnormal, promotes heat pump unit operational reliability, while reducing unit
Failure rate and maintenance rate.About the device in above-described embodiment, wherein each unit, module have executed the concrete mode of operation
It is described in detail in the embodiment of the method, no detailed explanation will be given here.
Embodiment 3
The four-way valve abnormal detector provided in 2 based on the above embodiment, also mentions in the preferred embodiment of the invention 3
A kind of air-conditioner set is supplied, including such as above-mentioned four-way valve abnormal detector.
In the above-described embodiment, automatic detection and the automatic maintenance scheme under a kind of four-way valve abnormal conditions are provided,
After monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment, four-way valve commutation extremely
When, it carries out four-way valve troubleshooting and adjusts default Rule of judgment.Through the above scheme, in the prior art four are efficiently solved
The problem of port valve commutation cannot be detected and be handled in time when abnormal, promotes heat pump unit operational reliability, while reducing unit
Failure rate and maintenance rate.
Embodiment 4
The four-way valve method for detecting abnormality provided in 1 based on the above embodiment, also mentions in the preferred embodiment of the invention 4
A kind of computer equipment has been supplied, including memory, processor and has stored the calculating that can be run on a memory and on a processor
Machine program, the processor realize such as above-mentioned method when executing described program.
In the above-described embodiment, automatic detection and the automatic maintenance scheme under a kind of four-way valve abnormal conditions are provided,
After monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment, four-way valve commutation extremely
When, it carries out four-way valve troubleshooting and adjusts default Rule of judgment.Through the above scheme, in the prior art four are efficiently solved
The problem of port valve commutation cannot be detected and be handled in time when abnormal, promotes heat pump unit operational reliability, while reducing unit
Failure rate and maintenance rate.
Embodiment 5
The four-way valve method for detecting abnormality provided in 1 based on the above embodiment, also mentions in the preferred embodiment of the invention 5
A kind of storage medium comprising computer executable instructions is supplied, the computer executable instructions are held by computer processor
For executing such as above-mentioned method when row.
In the above-described embodiment, automatic detection and the automatic maintenance scheme under a kind of four-way valve abnormal conditions are provided,
After monitoring four-way valve commutation, judge whether four-way valve commutates exception according to default Rule of judgment, four-way valve commutation extremely
When, it carries out four-way valve troubleshooting and adjusts default Rule of judgment.Through the above scheme, in the prior art four are efficiently solved
The problem of port valve commutation cannot be detected and be handled in time when abnormal, promotes heat pump unit operational reliability, while reducing unit
Failure rate and maintenance rate.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
The common knowledge in the art that person's adaptive change follows general principle of the invention and do not invent including the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (25)
1. a kind of four-way valve method for detecting abnormality characterized by comprising
After monitoring four-way valve commutation, judge whether the four-way valve commutates exception according to default Rule of judgment；
When the four-way valve commutates abnormal, add up the number of stoppages of the four-way valve, and carry out four-way valve troubleshooting；
The commutation number for adding up the four-way valve adjusts the default judgement item according to the number of stoppages and the commutation number
Part.
2. the method according to claim 1, wherein the monitoring four-way valve commutation, comprising:
Whether detection unit meets four-way valve commutation condition；Wherein, when the unit meets the four-way valve commutation condition, institute
State four-way valve commutation.
3. according to the method described in claim 2, it is characterized in that, four-way valve commutation condition includes following one: entering
Heating mode, into defrost pattern, exit defrost pattern.
4. according to the method described in claim 2, it is characterized in that, described judge that the four-way valve is according to default Rule of judgment
No commutation is abnormal, comprising:
At interval of default detection cycle, detection commutation abnormal determination parameter；
It is commutated condition according to the commutation abnormal determination parameter and the four-way valve, determines whether the four-way valve commutates exception.
5. according to the method described in claim 4, it is characterized in that, the commutation abnormal determination parameter includes following one:
First critical parameter: the difference △ T1 of refrigerant liquid pipe temperature sensing package temperature Ty and defrost temperature sensing package temperature Th；Wherein, △ T1=
Ty-Th, when the commutation abnormal determination parameter is first critical parameter, the default detection cycle is the first default inspection
Survey the period；
Second critical parameter: the water inlet temperature sensing package temperature Tj and difference △ T2 for being discharged temperature sensing package temperature Tc；Wherein, △ T2=Tj-
Tc, when the commutation abnormal determination parameter is second critical parameter, the default detection cycle is the second default detection
Period；
Third critical parameter: changing value △ T3 of the room temperature in the detection cycle；Wherein, △ T3=Tm-Tm-1, TmFor m
It is secondary to detect the obtained room temperature, Tm-1The obtained room temperature, the m times detection and m-1 are detected for the m-1 times
Detection cycle is preset described in the time phase difference of secondary detection, when the commutation abnormal determination parameter is the third critical parameter,
The default detection cycle is that third presets detection cycle.
6. according to the method described in claim 5, it is characterized in that, being first judgement in the commutation abnormal determination parameter
It is described according to the commutation abnormal determination parameter and the four-way valve commutation condition when parameter, determine whether the four-way valve changes
To exception, comprising:
It is into heating mode or to exit defrost pattern, and when △ T1≤0, determine the four-way in four-way valve commutation condition
Valve commutation is abnormal；
When four-way valve commutation condition is into defrost pattern, and when △ T1 >=0, determine that the four-way valve commutation is abnormal.
7. according to the method described in claim 5, it is characterized in that, being second judgement in the commutation abnormal determination parameter
It is described according to the commutation abnormal determination parameter and the four-way valve commutation condition when parameter, determine whether the four-way valve changes
To exception, comprising:
It is into heating mode or to exit defrost pattern, and when △ T2≤0, determine the four-way in four-way valve commutation condition
Valve commutation is abnormal；
It is and when △ T2 >=0, to determine that the four-way valve commutation is abnormal into defrost pattern in four-way valve commutation condition.
8. according to the method described in claim 5, it is characterized in that, being third judgement in the commutation abnormal determination parameter
It is described according to the commutation abnormal determination parameter and the four-way valve commutation condition when parameter, determine whether the four-way valve changes
To exception, comprising:
It is into heating mode or to exit defrost pattern, and when △ T3≤0, determine the four-way in four-way valve commutation condition
Valve commutation is abnormal；
When four-way valve commutation condition is into defrost pattern, determine that the four-way valve is according to second critical parameter
No commutation is abnormal, in △ T2 >=0, determines that the four-way valve commutation is abnormal.
9. according to the method described in claim 5, it is characterized in that, adjusting institute according to the number of stoppages and the commutation number
State default Rule of judgment, comprising:
Judge whether the commutation number reaches preset value；
When the commutation number reaches preset value, abnormal rate is calculated according to the number of stoppages and the commutation number；
The default Rule of judgment is adjusted according to the abnormal rate.
10. according to the method described in claim 9, it is characterized in that, the abnormal rate is calculated by the following formula: abnormal rate m
=x/n, wherein x is the number of stoppages of the four-way valve, and n is the commutation number of the four-way valve.
11. according to the method described in claim 9, it is characterized in that, sentencing in the commutation abnormal determination parameter for described first
It is described that the default Rule of judgment is adjusted according to the abnormal rate when determining parameter, comprising:
In the abnormal rate=0, the commutation abnormal determination parameter is adjusted to second critical parameter, it will be described default
Detection cycle is adjusted to the described second default detection cycle；
When abnormal rate≤a described in 0 <, the default detection cycle is adjusted to institute by the commutation abnormal determination parameter constant
State the 1/2 of the first default detection cycle；
In the abnormal rate > a, user is notified to carry out after-sales service.
12. according to the method described in claim 9, it is characterized in that, sentencing in the commutation abnormal determination parameter for described second
It is described that the default Rule of judgment is adjusted according to the abnormal rate when determining parameter, comprising:
In the abnormal rate=0, the commutation abnormal determination parameter is adjusted to the third critical parameter, it will be described default
Detection cycle is adjusted to the third and presets detection cycle；
When abnormal rate≤a described in 0 <, the default detection cycle is adjusted to institute by the commutation abnormal determination parameter constant
2 times for stating the second default detection cycle；
In the abnormal rate m > a, wherein a is default abnormal rate threshold value, and the commutation abnormal determination parameter is adjusted to institute
The first critical parameter is stated, the default detection cycle is adjusted to the 1/2 of the described first default detection cycle.
13. according to the method described in claim 9, it is characterized in that, being that the third is sentenced in the commutation abnormal determination parameter
It is described that the default Rule of judgment is adjusted according to the abnormal rate when determining parameter, comprising:
In the abnormal rate=0, the default detection cycle is adjusted to described by the commutation abnormal determination parameter constant
2 times of three default detection cycles；
When abnormal rate≤a described in 0 <, the commutation abnormal determination parameter is adjusted to second critical parameter, it will be described
Default detection cycle is adjusted to the described second default detection cycle；
In the abnormal rate > a, the commutation abnormal determination parameter is adjusted to first critical parameter, it will be described default
Detection cycle is adjusted to the 1/2 of the described first default detection cycle.
14. according to the method described in claim 5, it is characterized in that, described judge the four-way valve according to default Rule of judgment
Whether commutate exception, comprising:
When judging whether the four-way valve commutates abnormal according to the default Rule of judgment for the first time, by second critical parameter
As the commutation abnormal determination parameter, using the described second default detection cycle as the default detection cycle.
15. the method according to claim 1, wherein the four-way valve troubleshooting includes:
Again the four-way valve is detected whether to commutate success；
When the four-way valve commutates successfully, the four-way valve troubleshooting is exited, enables the number of stoppages x=x- of the four-way valve
1；
In the four-way valve commutation failure, commutation signal is sent to the four-way valve again.
16. according to the method for claim 15, which is characterized in that again to the four-way valve send commutation signal it
Afterwards, further includes:
Again the four-way valve is detected whether to commutate success；
When the four-way valve commutates successfully, the four-way valve troubleshooting is exited；
In the four-way valve commutation failure, the number of stoppages x=x+1 of the four-way valve is enabled, the commutation of the four-way valve is increased
Pressure difference sends commutation signal to the four-way valve again.
17. according to the method for claim 16, which is characterized in that in the commutation pressure difference for increasing the four-way valve, weight
After newly sending commutation signal to the four-way valve, further includes:
Again the four-way valve is detected whether to commutate success；
When the four-way valve commutates successfully, the four-way valve troubleshooting is exited；
In the four-way valve commutation failure, the number of stoppages x=x+1 of the four-way valve, reset itself, again to described are enabled
Four-way valve sends commutation signal.
18. according to the method for claim 17, which is characterized in that in the reset itself, again to the four-way valve
After transmission commutation signal, further includes:
Again the four-way valve is detected whether to commutate success；
When the four-way valve commutates successfully, the four-way valve troubleshooting is exited；
In the four-way valve commutation failure, the number of stoppages x=x+1 of the four-way valve is enabled, is shut down, user is notified to carry out after sale
Maintenance.
19. the described in any item methods of 5-18 according to claim 1, which is characterized in that described to detect the four-way valve again and be
It is no to commutate successfully, comprising:
Continuous preset failure detection cycle, detects the difference △ of refrigerant liquid pipe temperature sensing package temperature Ty and defrost temperature sensing package temperature Th
T1；Wherein, △ T1=Ty-Th；
It is commutated condition according to △ T1 and the four-way valve, judges whether the four-way valve commutates success；
It wherein, is into heating mode or to exit defrost pattern, and when △ T1 > 0, determine institute in four-way valve commutation condition
Four-way valve is stated to commutate successfully；
When four-way valve commutation condition is into defrost pattern, and when △ T1 < 0, determine that the four-way valve commutates successfully.
20. according to the method for claim 16, which is characterized in that the commutation pressure difference for increasing the four-way valve includes:
At interval of the first preset time, the frequency for controlling compressor increases predeterminated frequency, until default maximum frequency values；And
At interval of the second preset time, the aperture for controlling the four-way valve reduces default aperture, until default minimum opening value.
21. according to the method for claim 17, which is characterized in that after the compressor is restarted, further includes: adjust institute
The frequency of compressor is stated to default maximum frequency values, adjusts the aperture of the four-way valve to default minimum opening value.
22. a kind of four-way valve abnormal detector characterized by comprising
Judgment module, for whether judging the four-way valve according to default Rule of judgment after monitoring the four-way valve commutation
Commutation is abnormal；
Processing module, for adding up the number of stoppages of the four-way valve, and carry out four-way valve when the four-way valve commutates abnormal
Troubleshooting；
Module is adjusted, for adding up the commutation number of the four-way valve, is adjusted according to the number of stoppages and the commutation number
The default Rule of judgment.
23. a kind of air-conditioner set, which is characterized in that including four-way valve abnormal detector as claimed in claim 22.
24. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized as described in any one of claim 1 to 21 when executing described program
Four-way valve method for detecting abnormality.
25. a kind of storage medium comprising computer executable instructions, the computer executable instructions are by computer disposal
For executing the four-way valve method for detecting abnormality as described in any one of claim 1 to 21 when device executes.
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