CN105928279A - Four-way valve fault detection method and device and air conditioner - Google Patents

Four-way valve fault detection method and device and air conditioner Download PDF

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Publication number
CN105928279A
CN105928279A CN201610298391.9A CN201610298391A CN105928279A CN 105928279 A CN105928279 A CN 105928279A CN 201610298391 A CN201610298391 A CN 201610298391A CN 105928279 A CN105928279 A CN 105928279A
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CN
China
Prior art keywords
temperature
mode
conditioner
air
cross valve
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Pending
Application number
CN201610298391.9A
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Chinese (zh)
Inventor
申孟亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201610298391.9A priority Critical patent/CN105928279A/en
Publication of CN105928279A publication Critical patent/CN105928279A/en
Priority to PCT/CN2017/082265 priority patent/WO2017190628A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • 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
    • 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
    • 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
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2103—Temperatures near a heat exchanger
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2104—Temperatures of an indoor room or compartment

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a four-way valve fault detection method and device and an air conditioner. The four-way valve fault detection method comprises the steps that the temperature of an indoor heat exchanger, the temperature of an indoor environment and a working mode set by a user are detected; whether the current operating mode of the air conditioner is the same as the working mode set by the user or not is judged according to the temperature of the indoor heat exchanger and the temperature of the indoor environment; if not, a four-way valve is judged to be in an abnormal reversing state; and if yes, the four-way valve is judged to be in a normal reversing state. According to the scheme, whether the current operating mode of the air conditioner is the same as the working mode set by the user or not can be judged according to the temperature of the indoor heat exchanger and the temperature of the indoor environment, thus, whether reversing of the four-way valve is normal or not can be judged, and accordingly the user can be informed to maintain the four-way valve when reversing of the four-way valve is abnormal.

Description

Cross valve fault detection method, cross valve failure detector and air-conditioner
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of cross valve fault detection method, four Logical valve failure detector and air-conditioner.
Background technology
Existing air conditioner all uses cross valve commutation to carry out pattern switching, uses frequency ratio higher, but Along with the operation of air-conditioner, air-conditioner can produce foreign body, such as: compressor casing wear particle, and system is welded Slag etc., although be provided with drainage screen, filter etc. in most of air-conditioners for isolating foreign body, but still have Some foreign bodies are special because producing position, or diameter is less etc., and reason can not be isolated by filter screen, therefore, and such Foreign body easily enters in cross valve piston, and causes cross valve to occur not commutate or the event of incomplete commutation Barrier.Meanwhile, when cross valve does not commutates or the fault of incomplete commutation causes air-conditioner cisco unity malfunction, its Maintenance load is the biggest.
Therefore, how to design one and can interpolate that out whether cross valve breaks down and can send out at cross valve The cross valve fault detection method instructing the after-sales service of air-conditioner after raw fault becomes the most urgently to be resolved hurrily Problem.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to provide a kind of cross valve fault detection method.
In view of this, the embodiment of first aspect present invention provides a kind of cross valve fault detection method, bag Include: the mode of operation that the temperature of detection indoor heat exchanger and the temperature of indoor environment and user set；According to institute State the temperature of indoor heat exchanger and the present mode of operation of the described air-conditioner of the temperature section of sentencing of described indoor environment The most identical with the mode of operation that described user sets, if the present mode of operation of described air-conditioner and described use The mode of operation that family sets is different, then judge that cross valve is in commutation abnormality, if the working as of described air-conditioner The mode of operation that front operational mode sets with described user is identical, then judge that described cross valve is in commutation normal State.
The cross valve fault detection method that embodiment according to a first aspect of the present invention provides, by sensing chamber The mode of operation that the temperature of heat exchanger and the temperature of indoor environment and user set, thus can be according to indoor heat exchange The temperature of device and the temperature of indoor environment judge the work whether air-conditioner present mode of operation sets with user Operation mode is identical, thus when the mode of operation of air-conditioner present mode of operation with user's setting differs, i.e. Can determine whether out that cross valve does not commutate by regulation, i.e. cross valve is in commutation abnormality, and then can be in time Notify that cross valve is keeped in repair by user, certainly, the work that the present mode of operation at air-conditioner sets with user When operation mode is identical, can judge that cross valve commutates by regulation, i.e. cross valve is in the normal shape of commutation State, therefore can not make any process.
In technique scheme, specifically, when detecting that mode of operation that described user sets is as refrigeration mould When formula or dehumidifier pattern, the described temperature according to described indoor heat exchanger and the temperature section of sentencing of described indoor environment The detailed process that the present mode of operation of described air-conditioner is the most identical with the mode of operation that described user sets For: whether the temperature of the described indoor heat exchanger of the section of sentencing is preset with first more than or equal to the temperature of described indoor environment Temperature value sum, if the temperature of described indoor heat exchanger is more than or equal to the temperature of described indoor environment and described the One preset temperature value sum, then judge the work that the present mode of operation of described air-conditioner sets with described user Pattern is different, if the temperature of described indoor heat exchanger is preset with described first less than the temperature of described indoor environment Temperature value sum, then judge the mode of operation phase that the present mode of operation of described air-conditioner sets with described user With；Wherein, described first preset temperature value more than or equal to detect described indoor heat exchanger temperature time detection Error amount.
In this technical scheme, during the mode of operation difference that user sets, utilizing the temperature of indoor heat exchanger The breakdown judge process carrying out cross valve with the temperature of indoor environment is the most different, specifically, enters at air-conditioner When row refrigeration or dehumidifier, indoor heat exchanger is equivalent to a vaporizer, and its interior coolant produces after evaporation endothermic Raw food amount, and its cold produced is merely able to be delivered to indoor by heat transfer, therefore, indoor cold Derive from indoor heat exchanger, and according to the transmission law of energy, the temperature of indoor heat exchanger must be low In indoor environment temperature, therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if The temperature of indoor heat exchanger also higher than or is equal to indoor environment temperature, the most necessarily understands, the current fortune of air-conditioner Row mode is not refrigeration mode or the non-normal commutation of dehumidifier pattern, i.e. cross valve or commutates the most completely, and then i.e. Can determine that out that cross valve occurs in that fault, but in view of the detection error during temperature of detection indoor heat exchanger, Therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if the temperature of indoor heat exchanger More being higher than or more less than indoor environment temperature, it might not illustrate that cross valve commutation is abnormal, therefore, The cross valve fault detection method that this technical scheme provides suitably considers the temperature of detection indoor heat exchanger Time detection error, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described first preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, under refrigeration mode or dehumidifier pattern, the fault detect to cross valve During, only indoor heat exchanger temperature than indoor environment temperature higher than 1 DEG C time could illustrate four Logical valve does not commutates or commutates the most completely, thus can avoid causing the event to cross valve mistake due to detection error Barrier detection, and then the accuracy of cross valve fault detect can be improved.
In technique scheme, specifically, when detecting that mode of operation that described user sets is as heating mould During formula, the described air-conditioner of the temperature section of sentencing of the described temperature according to described indoor heat exchanger and described indoor environment The present mode of operation detailed process the most identical with the mode of operation that described user sets as: described in the section of sentencing Whether the temperature of indoor heat exchanger is less than or equal to temperature and the second preset temperature value sum of described indoor environment, If the temperature of described indoor heat exchanger is less than or equal to the temperature of described indoor environment and described second preset temperature Value sum, then judge that the present mode of operation of described air-conditioner is different from the mode of operation that described user sets, If the temperature of described indoor heat exchanger more than described indoor environment temperature and described second preset temperature value it With, then judge that the present mode of operation of described air-conditioner is identical with the mode of operation that described user sets；Wherein, Described second preset temperature value is more than or equal to the detection error amount during temperature detecting described indoor heat exchanger.
In this technical scheme, when the mode of operation that user sets is as heating mode, the heat of indoor environment Deriving from indoor heat exchanger, therefore, the temperature of indoor heat exchanger must be higher than the temperature of indoor environment, because of This, when the mode of operation that user sets is as heating mode, if the temperature of indoor heat exchanger is also less than equal to room Interior ambient temperature, the most necessarily understands, and the present mode of operation of air-conditioner is not heating mode, thus can sentence Make cross valve not commutate or commutate the most completely, i.e. cross valve is in abnormality, but it is also contemplated that detects Detection error during the temperature of indoor heat exchanger, therefore, when the mode of operation that user sets is as heating mode, If the temperature of indoor heat exchanger is more higher than or more less than indoor environment temperature, it might not illustrate four-way Valve commutation is abnormal, and therefore, the cross valve fault detection method that this technical scheme provides the most suitably considers temperature The error of degree detection, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described second preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, in a heating mode, during the fault detect of cross valve, Only indoor heat exchanger temperature than indoor environment temperature less than 1 DEG C time could illustrate that cross valve does not changes To or commutate the most completely, thus can avoid causing due to detection error the fault detect of mistake, and then can carry The accuracy of high cross valve fault detect.
In technique scheme, it is preferable that described cross valve fault detection method also includes: judge described It is pre-conditioned whether the conditions present residing for air-conditioner meets；When judging the conditions present residing for described air-conditioner When meeting pre-conditioned, perform the described temperature of detection indoor heat exchanger and the temperature of indoor environment and user sets The step of fixed mode of operation；Wherein, described pre-conditioned one of following condition that at least includes: described air-conditioning The operation time of device is more than or equal to the predetermined running time；The present mode of operation of described air-conditioner is non-automatic fortune Row mode；The present mode of operation of described air-conditioner is non-air-supply operational mode；The current fortune of described air-conditioner Row mode is non-defrosting mode, and described air-conditioner is more than Preset Time away from the defrosting end time.
In this technical scheme, the conditions present being presently in air-conditioner judges, and only at air-conditioning When the conditions present of device meets pre-conditioned, just carry out breakdown judge, thus erroneous judgement can be prevented, and then can carry The accuracy of high cross valve fault detection method.Specifically, such as, when air-conditioner just runs, air-conditioning Refrigerating capacity or heating capacity that device produces are the least, therefore, are not enough to cause indoor heat exchanger and indoor environment Form temperature difference, therefore, if utilizing this cross valve fault detection method that cross valve is carried out in that case , the most easily there is the detection of mistake in fault detect, thus when the operation time of air-conditioner is more than or equal to preset The fault detect carrying out cross valve after between again can improve the accuracy of cross valve fault detection method, in like manner, When the operational mode of air-conditioner is automatic operational mode, owing to air-conditioner is from carrying out constantly in mode of operation Regulation, therefore, is now also not suitable for utilizing cross valve fault detection method that cross valve is carried out fault detect, Additionally, when air-conditioner is in air supply pattern, compressor off-duty, now air-conditioner is not carried out accordingly Freeze or heat, therefore, between indoor heat exchanger and indoor environment, there is not temperature difference, thus, also uncomfortable Close the fault detect utilizing the method to carry out cross valve.Further, in during defrosting or defrosting has just terminated It is also not suitable in short time utilizing cross valve fault detection method that cross valve is carried out fault detect, because removing Frost essence be that the mode of operation of air-conditioner is adjusted to heating mode, therefore, during defrosting in or defrost In the short time just terminated, due to the variation of the mode of operation of air-conditioner, and indoor heat exchanger can be caused The change of the temperature of temperature and indoor environment, it is thus impossible to enough the most merely according to the temperature of indoor heat exchanger and The difference of the temperature of indoor environment decides that cross valve commutation is abnormal.
In technique scheme, it is preferable that described cross valve fault detection method also includes: sentence described Determine cross valve be in commutation abnormality after, output cross valve commutation abnormal signal.
In this technical scheme, on the one hand can sentence by arranging the alarm output device such as alarm, display screen Make cross valve and be in commutation abnormality, i.e. do not commutate or the most completely commutation after, send include sound, light, Words etc. are in interior multiple prompting, in order to the cross valve of prompting user's air-conditioner is in abnormality, Jin Erke It is easy to user in time air-conditioner is keeped in repair, on the other hand, it is possible to produced by signal output apparatus and defeated Go out cross valve commutation abnormal signal, in order to air-conditioner commutates abnormal signal to four-way according to the cross valve received Valve keeps in repair automatically.
The embodiment of second aspect present invention provides a kind of cross valve failure detector, for air-conditioner, Including: detection device, for detecting what the temperature of indoor heat exchanger and the temperature of indoor environment and user set Mode of operation；Processing means, for the temperature according to described indoor heat exchanger and the temperature of described indoor environment The present mode of operation of the described air-conditioner of the section of sentencing is the most identical with the mode of operation that described user sets, and in institute State the present mode of operation of air-conditioner different from the mode of operation that described user sets time, it is determined that cross valve is in Commutation abnormality, and the mode of operation phase set with described user at the present mode of operation of described air-conditioner Simultaneously, it is determined that described cross valve is in commutation normal condition.
The cross valve failure detector that embodiment according to a first aspect of the present invention provides, by sensing chamber The mode of operation that the temperature of heat exchanger and the temperature of indoor environment and user set, thus can be according to indoor heat exchange The temperature of device and the temperature of indoor environment judge the work whether air-conditioner present mode of operation sets with user Operation mode is identical, thus when the mode of operation of air-conditioner present mode of operation with user's setting differs, i.e. Can determine whether out that cross valve does not commutate by regulation, i.e. cross valve is in commutation abnormality, and then can be in time Notify that cross valve is keeped in repair by user, certainly, the work that the present mode of operation at air-conditioner sets with user When operation mode is identical, can judge that cross valve commutates by regulation, i.e. cross valve is in the normal shape of commutation State, therefore can not make any process.
In technique scheme, specifically, described processing means is for detecting institute at described detection device When stating mode of operation that user sets as refrigeration mode or dehumidifier pattern, the temperature of the described indoor heat exchanger of the section of sentencing Whether it is more than or equal to temperature and the first preset temperature value sum of described indoor environment, and in described indoor heat exchange When the temperature of device is more than or equal to the temperature of described indoor environment with described first preset temperature value sum, it is determined that institute The present mode of operation stating air-conditioner is different from the mode of operation that described user sets, and in described indoor heat exchange When the temperature of device is less than the temperature of described indoor environment with described first preset temperature value sum, it is determined that described sky The present mode of operation adjusting device is identical with the mode of operation that described user sets；Wherein, described first temperature is preset Angle value is more than or equal to the detection error amount during temperature detecting described indoor heat exchanger.
In this technical scheme, during the mode of operation difference that user sets, utilizing the temperature of indoor heat exchanger The breakdown judge process carrying out cross valve with the temperature of indoor environment is the most different, specifically, enters at air-conditioner When row refrigeration or dehumidifier, indoor heat exchanger is equivalent to a vaporizer, and its interior coolant produces after evaporation endothermic Raw food amount, and its cold produced is merely able to be delivered to indoor by heat transfer, therefore, indoor cold Derive from indoor heat exchanger, and according to the transmission law of energy, the temperature of indoor heat exchanger must be low In indoor environment temperature, therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if The temperature of indoor heat exchanger also higher than or is equal to indoor environment temperature, the most necessarily understands, the current fortune of air-conditioner Row mode is not refrigeration mode or the non-normal commutation of dehumidifier pattern, i.e. cross valve or commutates the most completely, and then i.e. Can determine that out that cross valve occurs in that fault, but in view of the detection error during temperature of detection indoor heat exchanger, Therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if the temperature of indoor heat exchanger More being higher than or more less than indoor environment temperature, it might not illustrate that cross valve commutation is abnormal, therefore, The cross valve fault detection method that this technical scheme provides suitably considers the temperature of detection indoor heat exchanger Time detection error, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described first preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, under refrigeration mode or dehumidifier pattern, the fault detect to cross valve During, only indoor heat exchanger temperature than indoor environment temperature higher than 1 DEG C time could illustrate four Logical valve does not commutates or commutates the most completely, thus can avoid causing the fault detect of mistake due to detection error, And then the accuracy of cross valve fault detect can be improved.
In technique scheme, specifically, described processing means is for detecting institute at described detection device When stating mode of operation that user sets as heating mode, whether the temperature of the described indoor heat exchanger of the section of sentencing is less than In temperature and the second preset temperature value sum of described indoor environment and little in the temperature of described indoor heat exchanger When equal to the temperature of described indoor environment with described second preset temperature value sum, it is determined that described air-conditioner The mode of operation that present mode of operation sets from described user is different, and big in the temperature of described indoor heat exchanger When temperature and the described second preset temperature value sum of described indoor environment, it is determined that described air-conditioner current The mode of operation that operational mode sets with described user is identical；Wherein, described second preset temperature value is more than Detection error amount in time detecting the temperature of described indoor heat exchanger.
In this technical scheme, when the mode of operation that user sets is as heating mode, the heat of indoor environment Deriving from indoor heat exchanger, therefore, the temperature of indoor heat exchanger must be higher than the temperature of indoor environment, because of This, when the mode of operation that user sets is as heating mode, if the temperature of indoor heat exchanger is also less than equal to room Interior ambient temperature, the most necessarily understands, and the present mode of operation of air-conditioner is not heating mode, thus can sentence Make cross valve not commutate or commutate the most completely, i.e. cross valve is in abnormality, but it is also contemplated that detects Detection error during the temperature of indoor heat exchanger, therefore, when the mode of operation that user sets is as heating mode, If the temperature of indoor heat exchanger is more higher than or more less than indoor environment temperature, it might not illustrate four-way Valve commutation is abnormal, and therefore, the cross valve fault detection method that this technical scheme provides the most suitably considers temperature The error of degree detection, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described second preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, in a heating mode, during the fault detect of cross valve, Only indoor heat exchanger temperature than indoor environment temperature less than 1 DEG C time could illustrate that cross valve does not changes To or commutate the most completely, thus can avoid causing due to detection error the fault detect of mistake, and then can carry The accuracy of high cross valve fault detect.
Preferably, described processing means is additionally operable to judge whether the conditions present residing for described air-conditioner meets pre- If condition, and when the conditions present residing for described air-conditioner meets pre-conditioned, control detection device detection The mode of operation that the temperature of indoor heat exchanger and the temperature of indoor environment and user set；Wherein, described default Condition at least includes one of following condition: the operation time of described air-conditioner is more than or equal to the predetermined running time； The present mode of operation of described air-conditioner is non-automatic operational mode；The present mode of operation of described air-conditioner is Non-air-supply operational mode；The present mode of operation of described air-conditioner is non-defrosting mode, and described air-conditioner away from The defrosting end time is more than Preset Time.
In this technical scheme, the conditions present being presently in air-conditioner judges, and only at air-conditioning When the conditions present of device meets pre-conditioned, just carry out breakdown judge, thus erroneous judgement can be prevented, and then can carry The accuracy of high cross valve fault detection method.Specifically, such as, when air-conditioner just runs, air-conditioning Refrigerating capacity or heating capacity that device produces are the least, therefore, are not enough to cause indoor heat exchanger and indoor environment Form temperature difference, therefore, in that case, if utilizing this cross valve fault detection method that cross valve is entered , the most easily there is the detection of mistake, thus is more than or equal to preset in the operation time of air-conditioner in row fault detect The fault detect carrying out cross valve after time again can improve the accuracy of cross valve fault detection method, in like manner, When the operational mode of air-conditioner is automatic operational mode, owing to air-conditioner is from time carrying out mode of operation Time regulation, therefore, be now also not suitable for utilizing cross valve fault detection method that cross valve is carried out fault detect, Additionally, when air-conditioner is in air supply pattern, compressor off-duty, now air-conditioner is not carried out accordingly Freeze or heat, therefore, between indoor heat exchanger and indoor environment, there is not temperature difference, thus, also uncomfortable Close the fault detect utilizing the method to carry out cross valve.Further, in during defrosting or defrosting has just terminated It is also not suitable in short time utilizing cross valve fault detection method that cross valve is carried out fault detect, because removing Frost essence be that the mode of operation of air-conditioner is adjusted to heating mode, therefore, during defrosting in or defrost In the short time just terminated, due to the variation of the mode of operation of air-conditioner, and indoor heat exchanger can be caused The change of the temperature of temperature and indoor environment, it is thus impossible to enough the most merely according to the temperature of indoor heat exchanger and The difference of the temperature of indoor environment decides that cross valve commutation is abnormal.
In technique scheme, it is preferable that described cross valve failure detector also includes: output device, Change for determining output cross valve after described cross valve is in commutation abnormality in described processing means To abnormal signal.
In this technical scheme, on the one hand can sentence by arranging the alarm output device such as alarm, display screen Make cross valve and be in commutation abnormality, i.e. do not commutate or the most completely commutation after, send include sound, light, Words etc. are in interior multiple prompting, in order to the cross valve of prompting user's air-conditioner is in abnormality, Jin Erke It is easy to user in time air-conditioner is keeped in repair, on the other hand, it is possible to produced by signal output apparatus and defeated Go out cross valve commutation abnormal signal, in order to air-conditioner commutates abnormal signal to four-way according to the cross valve received Valve keeps in repair automatically.
The embodiment of third aspect present invention provides a kind of air-conditioner, including second aspect any one embodiment Described cross valve failure detector.
The air-conditioner that the embodiment of third aspect present invention provides, including described in second aspect any one embodiment Cross valve failure detector, therefore, there is the cross valve fault described in second aspect any one embodiment The beneficial effect of detection device, does not repeats them here.
Additional aspect and the advantage of the present invention will become obvious in following description part, or pass through the present invention Practice recognize.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment Will be apparent from easy to understand, wherein:
Fig. 1 shows the flow process signal of cross valve fault detection method according to an embodiment of the invention Figure；
Fig. 2 shows another flow process of cross valve fault detection method according to an embodiment of the invention Schematic diagram；
Fig. 3 shows the structural schematic block diagram of cross valve failed equipment according to an embodiment of the invention；
Fig. 4 shows the structural schematic block diagram of air-conditioner according to an embodiment of the invention；
Fig. 5 shows that the flow process of cross valve fault detection method according to still another embodiment of the invention is shown It is intended to.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the accompanying drawings and The present invention is further described in detail by detailed description of the invention.It should be noted that in the feelings do not conflicted Under condition, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but, this Bright can implement to use other to be different from other modes described here, therefore, the protection model of the present invention Enclose and do not limited by following public specific embodiment.
Referring to Fig. 1, cross valve fault detection method according to some embodiments of the invention is described.
The embodiment of first aspect present invention provides a kind of cross valve fault detection method, as it is shown in figure 1, Including: step 102, the work that the temperature of detection indoor heat exchanger and the temperature of indoor environment and user set Pattern；Step 104, according to the temperature of described indoor heat exchanger and the temperature section of sentencing of described indoor environment The present mode of operation of air-conditioner is the most identical with the mode of operation that described user sets, if described air-conditioner The mode of operation that present mode of operation sets from described user is different, then judge that cross valve is in the abnormal shape of commutation State, if the present mode of operation of described air-conditioner is identical with the mode of operation that described user sets, then judges institute State cross valve and be in commutation normal condition.
The cross valve fault detection method that embodiment according to a first aspect of the present invention provides, by sensing chamber The mode of operation that the temperature of heat exchanger and the temperature of indoor environment and user set, thus can be according to indoor heat exchange The temperature of device and the temperature of indoor environment judge the work whether air-conditioner present mode of operation sets with user Operation mode is identical, thus when the mode of operation of air-conditioner present mode of operation with user's setting differs, i.e. Can determine whether out that cross valve does not commutate by regulation, i.e. cross valve is in commutation abnormality, and then can be in time Notify that cross valve is keeped in repair by user, certainly, the work that the present mode of operation at air-conditioner sets with user When operation mode is identical, can judge that cross valve commutates by regulation, i.e. cross valve is in the normal shape of commutation State, therefore can not make any process.
In technique scheme, specifically, when detecting that mode of operation that described user sets is as refrigeration mould When formula or dehumidifier pattern, the described temperature according to described indoor heat exchanger and the temperature section of sentencing of described indoor environment The detailed process that the present mode of operation of described air-conditioner is the most identical with the mode of operation that described user sets For: whether the temperature of the described indoor heat exchanger of the section of sentencing is preset with first more than or equal to the temperature of described indoor environment Temperature value sum, if the temperature of described indoor heat exchanger is more than or equal to the temperature of described indoor environment and described the One preset temperature value sum, then judge the work that the present mode of operation of described air-conditioner sets with described user Pattern is different, if the temperature of described indoor heat exchanger is preset with described first less than the temperature of described indoor environment Temperature value sum, then judge the mode of operation phase that the present mode of operation of described air-conditioner sets with described user With；Wherein, described first preset temperature value more than or equal to detect described indoor heat exchanger temperature time detection Error amount.
In this technical scheme, during the mode of operation difference that user sets, utilizing the temperature of indoor heat exchanger The breakdown judge process carrying out cross valve with the temperature of indoor environment is the most different, specifically, enters at air-conditioner When row refrigeration or dehumidifier, indoor heat exchanger is equivalent to a vaporizer, and its interior coolant produces after evaporation endothermic Raw food amount, and its cold produced is merely able to be delivered to indoor by heat transfer, therefore, indoor cold Derive from indoor heat exchanger, and according to the transmission law of energy, the temperature of indoor heat exchanger must be low In indoor environment temperature, therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if The temperature of indoor heat exchanger also higher than or is equal to indoor environment temperature, the most necessarily understands, the current fortune of air-conditioner Row mode is not refrigeration mode or the non-normal commutation of dehumidifier pattern, i.e. cross valve or commutates the most completely, and then i.e. Can determine that out that cross valve occurs in that fault, but in view of the detection error during temperature of detection indoor heat exchanger, Therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if the temperature of indoor heat exchanger More being higher than or more less than indoor environment temperature, it might not illustrate that cross valve commutation is abnormal, therefore, The cross valve fault detection method that this technical scheme provides suitably considers the temperature of detection indoor heat exchanger Time detection error, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described first preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, under refrigeration mode or dehumidifier pattern, the fault detect to cross valve During, only indoor heat exchanger temperature than indoor environment temperature higher than 1 DEG C time could illustrate four Logical valve does not commutates or commutates the most completely, thus can avoid causing the fault detect of mistake due to detection error, And then the accuracy of cross valve fault detect can be improved.
In technique scheme, specifically, when detecting that mode of operation that described user sets is as heating mould During formula, the described air-conditioner of the temperature section of sentencing of the described temperature according to described indoor heat exchanger and described indoor environment The present mode of operation detailed process the most identical with the mode of operation that described user sets as: described in the section of sentencing Whether the temperature of indoor heat exchanger is less than or equal to temperature and the second preset temperature value sum of described indoor environment, If the temperature of described indoor heat exchanger is less than or equal to the temperature of described indoor environment and described second preset temperature Value sum, then judge that the present mode of operation of described air-conditioner is different from the mode of operation that described user sets, If the temperature of described indoor heat exchanger more than described indoor environment temperature and described second preset temperature value it With, then judge that the present mode of operation of described air-conditioner is identical with the mode of operation that described user sets；Wherein, Described second preset temperature value is more than or equal to the detection error amount during temperature detecting described indoor heat exchanger.
In this technical scheme, when the mode of operation that user sets is as heating mode, the heat of indoor environment Deriving from indoor heat exchanger, therefore, the temperature of indoor heat exchanger must be higher than the temperature of indoor environment, because of This, when the mode of operation that user sets is as heating mode, if the temperature of indoor heat exchanger is also less than equal to room Interior ambient temperature, the most necessarily understands, and the present mode of operation of air-conditioner is not heating mode, thus can sentence Make cross valve not commutate or commutate the most completely, i.e. cross valve is in abnormality, but it is also contemplated that detects Detection error during the temperature of indoor heat exchanger, therefore, when the mode of operation that user sets is as heating mode, If the temperature of indoor heat exchanger is more higher than or more less than indoor environment temperature, it might not illustrate four-way Valve commutation is abnormal, and therefore, the cross valve fault detection method that this technical scheme provides the most suitably considers temperature The error of degree detection, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described second preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, in a heating mode, during the fault detect of cross valve, Only indoor heat exchanger temperature than indoor environment temperature less than 1 DEG C time could illustrate that cross valve does not changes To or commutate the most completely, thus can avoid causing due to detection error the fault detect of mistake, and then can carry The accuracy of high cross valve fault detect.
In technique scheme, it is preferable that described cross valve fault detection method also includes: judge described It is pre-conditioned whether the conditions present residing for air-conditioner meets；When judging the conditions present residing for described air-conditioner When meeting pre-conditioned, perform the described temperature of detection indoor heat exchanger and the temperature of indoor environment and user sets The step of fixed mode of operation；Wherein, described pre-conditioned one of following condition that at least includes: described air-conditioning The operation time of device is more than or equal to the predetermined running time；The present mode of operation of described air-conditioner is non-automatic fortune Row mode；The present mode of operation of described air-conditioner is non-air-supply operational mode；The current fortune of described air-conditioner Row mode is non-defrosting mode, and described air-conditioner is more than Preset Time away from the defrosting end time.
In this technical scheme, specifically, described cross valve fault detection method is as in figure 2 it is shown, include:
Step 202, it is judged that it is pre-conditioned whether the conditions present residing for described air-conditioner meets, and described When conditions present residing for air-conditioner meets pre-conditioned, perform step 204, otherwise, at described air-conditioner When residing conditions present is unsatisfactory for pre-conditioned, cross valve is not carried out fault detect.
Step 204, the Working mould that the temperature of detection indoor heat exchanger and the temperature of indoor environment and user set Formula.
Step 206, according to temperature and the described sky of the temperature section of sentencing of described indoor environment of described indoor heat exchanger Adjust device present mode of operation the most identical with the mode of operation that described user sets, if described air-conditioner work as The mode of operation that front operational mode sets from described user is different, then judge that cross valve is in the abnormal shape of commutation State, otherwise, if the present mode of operation of described air-conditioner is identical with the mode of operation that described user sets, then Judge that described cross valve is in commutation normal condition, and terminate the fault detect of cross valve.
The conditions present that air-conditioner is presently in by this technical scheme judges, and only working as at air-conditioner When precondition meets pre-conditioned, just carry out breakdown judge, thus erroneous judgement can be prevented, and then four-way can be improved The accuracy of valve fault detection method.Specifically, such as, when air-conditioner just runs, air-conditioner produces Refrigerating capacity or heating capacity the least, therefore, be not enough to cause indoor heat exchanger and indoor environment to form temperature It is poor to spend, therefore, in that case, if utilizing this cross valve fault detection method that cross valve is carried out fault , the most easily there is the detection of mistake in detection, thus after the operation time of air-conditioner is more than or equal to Preset Time The fault detect carrying out cross valve again can improve the accuracy of cross valve fault detection method, in like manner, at air-conditioning When the operational mode of device is automatic operational mode, owing to air-conditioner is from adjusting constantly in mode of operation Joint, therefore, is now also not suitable for utilizing cross valve fault detection method that cross valve is carried out fault detect, this Outward, when air-conditioner is in air supply pattern, compressor off-duty, now air-conditioner is made the most accordingly Cold or heat, therefore, between indoor heat exchanger and indoor environment, there is not temperature difference, thus, it is also not suitable for The method is utilized to carry out the fault detect of cross valve.Further, in during defrosting or defrosting just terminated short It is also not suitable in time utilizing cross valve fault detection method that cross valve is carried out fault detect, because, defrosting Essence be that the mode of operation of air-conditioner is adjusted to heating mode, therefore, during defrosting in or defrosting just In the short time just terminated, due to the variation of the mode of operation of air-conditioner, and the temperature of indoor heat exchanger can be caused The change of the temperature of degree and indoor environment, it is thus impossible to enough merely according to temperature and the room of indoor heat exchanger The difference of the temperature of interior environment decides that cross valve commutation is abnormal.
In technique scheme, it is preferable that described cross valve fault detection method also includes: sentence described Determine cross valve be in commutation abnormality after, output cross valve commutation abnormal signal.
In this technical scheme, on the one hand can sentence by arranging the alarm output device such as alarm, display screen Make cross valve and be in commutation abnormality, i.e. do not commutate or the most completely commutation after, send include sound, light, Words etc. are in interior multiple prompting, in order to the cross valve of prompting user's air-conditioner is in abnormality, Jin Erke It is easy to user in time air-conditioner is keeped in repair, on the other hand, it is possible to produced by signal output apparatus and defeated Go out cross valve commutation abnormal signal, in order to air-conditioner commutates abnormal signal to four-way according to the cross valve received Valve keeps in repair automatically.
Fig. 3 shows that the structure of cross valve failure detector 300 according to an embodiment of the invention is shown Meaning block diagram.
As it is shown on figure 3, the embodiment of second aspect present invention provides a kind of cross valve failure detector 300, for air-conditioner, including: detection device 310, for detecting temperature and the indoor of indoor heat exchanger The mode of operation that the temperature of environment and user set；Processing means 320, for according to described indoor heat exchanger Temperature and described indoor environment the described air-conditioner of the temperature section of sentencing present mode of operation whether with described use The mode of operation that family sets is identical, and the work set present mode of operation and the described user of described air-conditioner During operation mode difference, it is determined that cross valve is in commutation abnormality, and currently run mould at described air-conditioner When formula is identical with the mode of operation that described user sets, it is determined that described cross valve is in commutation normal condition.
The cross valve failure detector 300 that embodiment according to a first aspect of the present invention provides, by detection The mode of operation that the temperature of indoor heat exchanger and the temperature of indoor environment and user set, thus can be according to indoor The temperature of heat exchanger and the temperature of indoor environment judge whether air-conditioner present mode of operation sets with user Mode of operation identical, thus the mode of operation set air-conditioner present mode of operation and user differs Time, can judge that cross valve does not commutate by regulation, i.e. cross valve is in commutation abnormality, and then is Can notify that cross valve is keeped in repair by user in time, certainly, the present mode of operation at air-conditioner sets with user When fixed mode of operation is identical, can judge that cross valve commutates by regulation, i.e. cross valve is in commutation Normal condition, therefore can not make any process.
In technique scheme, specifically, described processing means 320 is at described detection device 310 When detecting that mode of operation that described user sets is as refrigeration mode or dehumidifier pattern, the described indoor heat exchange of the section of sentencing Whether the temperature of device is more than or equal to temperature and the first preset temperature value sum of described indoor environment, and described The temperature of indoor heat exchanger is more than or equal to the temperature of described indoor environment and described first preset temperature value sum Time, it is determined that the mode of operation that the present mode of operation of described air-conditioner sets from described user is different, and in institute When stating the temperature of the indoor heat exchanger temperature less than described indoor environment with described first preset temperature value sum, Judge that the present mode of operation of described air-conditioner is identical with the mode of operation that described user sets；Wherein, described First preset temperature value is more than or equal to the detection error amount during temperature detecting described indoor heat exchanger.
In this technical scheme, during the mode of operation difference that user sets, utilizing the temperature of indoor heat exchanger The breakdown judge process carrying out cross valve with the temperature of indoor environment is the most different, specifically, enters at air-conditioner When row refrigeration or dehumidifier, indoor heat exchanger is equivalent to a vaporizer, and its interior coolant produces after evaporation endothermic Raw food amount, and its cold produced is merely able to be delivered to indoor by heat transfer, therefore, indoor cold Derive from indoor heat exchanger, and according to the transmission law of energy, the temperature of indoor heat exchanger must be low In indoor environment temperature, therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if The temperature of indoor heat exchanger also higher than or is equal to indoor environment temperature, the most necessarily understands, the current fortune of air-conditioner Row mode is not refrigeration mode or the non-normal commutation of dehumidifier pattern, i.e. cross valve or commutates the most completely, and then i.e. Can determine that out that cross valve occurs in that fault, but in view of the detection error during temperature of detection indoor heat exchanger, Therefore, when the mode of operation that user sets is as refrigeration mode or dehumidifier pattern, if the temperature of indoor heat exchanger More being higher than or more less than indoor environment temperature, it might not illustrate that cross valve commutation is abnormal, therefore, The cross valve fault detection method that this technical scheme provides suitably considers the temperature of detection indoor heat exchanger Time detection error, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described first preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, under refrigeration mode or dehumidifier pattern, the fault detect to cross valve During, only indoor heat exchanger temperature than indoor environment temperature higher than 1 DEG C time could illustrate four Logical valve does not commutates or commutates the most completely, thus can avoid causing the fault detect of mistake due to detection error, And then the accuracy of cross valve fault detect can be improved.
In technique scheme, specifically, described processing means 320 is at described detection device 310 When detecting that mode of operation that described user sets is as heating mode, the temperature of the described indoor heat exchanger of the section of sentencing is The no temperature less than or equal to described indoor environment and the second preset temperature value sum, and at described indoor heat exchanger Temperature less than or equal to temperature and the described second preset temperature value sum of described indoor environment time, it is determined that described The mode of operation that the present mode of operation of air-conditioner sets from described user is different, and at described indoor heat exchanger Temperature more than temperature and the described second preset temperature value sum of described indoor environment time, it is determined that described air-conditioning The mode of operation that the present mode of operation of device sets with described user is identical；Wherein, described second preset temperature Value is more than or equal to the detection error amount during temperature detecting described indoor heat exchanger.
In this technical scheme, when the mode of operation that user sets is as heating mode, the heat of indoor environment Deriving from indoor heat exchanger, therefore, the temperature of indoor heat exchanger must be higher than the temperature of indoor environment, because of This, when the mode of operation that user sets is as heating mode, if the temperature of indoor heat exchanger is also less than equal to room Interior ambient temperature, the most necessarily understands, and the present mode of operation of air-conditioner is not heating mode, thus can sentence Make cross valve not commutate or commutate the most completely, i.e. cross valve is in abnormality, but it is also contemplated that detects Detection error during the temperature of indoor heat exchanger, therefore, when the mode of operation that user sets is as heating mode, If the temperature of indoor heat exchanger is more higher than or more less than indoor environment temperature, it might not illustrate four-way Valve commutation is abnormal, and therefore, the cross valve fault detection method that this technical scheme provides the most suitably considers temperature The error of degree detection, thus can prevent occurring that the situation of error detection is sent out because of the reason of temperature detection error Raw, and then improve the accuracy of cross valve fault detection method.
In technique scheme, it is preferable that described second preset temperature value is more than or equal to 1 DEG C.
Specifically, in existing air-conditioner, when indoor heat exchanger is carried out temperature employing detection, typically deposit At the positive and negative deviation of 1 DEG C, therefore, in a heating mode, during the fault detect of cross valve, Only indoor heat exchanger temperature than indoor environment temperature less than 1 DEG C time could illustrate that cross valve does not changes To or commutate the most completely, thus can avoid causing due to detection error the fault detect of mistake, and then can carry The accuracy of high cross valve fault detect.
In technique scheme, it is preferable that processing means 320 is additionally operable to judge residing for described air-conditioner It is pre-conditioned whether conditions present meets, and meets pre-conditioned at the conditions present residing for described air-conditioner Time, control detection device 310 and detect what the temperature of indoor heat exchanger and the temperature of indoor environment and user set Mode of operation；Wherein, described pre-conditioned one of following condition that at least includes: during the operation of described air-conditioner Between more than or equal to the predetermined running time；The present mode of operation of described air-conditioner is non-automatic operational mode；Institute The present mode of operation stating air-conditioner is non-air-supply operational mode；The present mode of operation of described air-conditioner is non- Defrosting mode, and described air-conditioner away from the defrosting end time more than Preset Time.
In this technical scheme, the conditions present being presently in air-conditioner judges, and only at air-conditioning When the conditions present of device meets pre-conditioned, just carry out breakdown judge, thus erroneous judgement can be prevented, and then can carry The accuracy of high cross valve fault detection method.Specifically, such as, when air-conditioner just runs, air-conditioning Refrigerating capacity or heating capacity that device produces are the least, therefore, are not enough to cause indoor heat exchanger and indoor environment Form temperature difference, therefore, in that case, if utilizing this cross valve fault detection method that cross valve is entered , the most easily there is the detection of mistake, thus is more than or equal to preset in the operation time of air-conditioner in row fault detect The fault detect carrying out cross valve after time again can improve the accuracy of cross valve fault detection method, in like manner, When the operational mode of air-conditioner is automatic operational mode, owing to air-conditioner is from time carrying out mode of operation Time regulation, therefore, be now also not suitable for utilizing cross valve fault detection method that cross valve is carried out fault detect, Additionally, when air-conditioner is in air supply pattern, compressor off-duty, now air-conditioner is not carried out accordingly Freeze or heat, therefore, between indoor heat exchanger and indoor environment, there is not temperature difference, thus, also uncomfortable Close the fault detect utilizing the method to carry out cross valve.Further, in during defrosting or defrosting has just terminated It is also not suitable in short time utilizing cross valve fault detection method that cross valve is carried out fault detect, because removing Frost essence be that the mode of operation of air-conditioner is adjusted to heating mode, therefore, during defrosting in or defrost In the short time just terminated, due to the variation of the mode of operation of air-conditioner, and indoor heat exchanger can be caused The change of the temperature of temperature and indoor environment, it is thus impossible to enough the most merely according to the temperature of indoor heat exchanger and The difference of the temperature of indoor environment decides that cross valve commutation is abnormal.
In technique scheme, it is preferable that as it is shown on figure 3, described cross valve failure detector 300 Also include: output device 330, be in commutation for determining described cross valve in described processing means 320 Cross valve commutation abnormal signal is exported after abnormality.
In this technical scheme, on the one hand can sentence by arranging the alarm output device such as alarm, display screen Make cross valve and be in commutation abnormality, i.e. do not commutate or the most completely commutation after, send include sound, light, Words etc. are in interior multiple prompting, in order to the cross valve of prompting user's air-conditioner is in abnormality, Jin Erke It is easy to user in time air-conditioner is keeped in repair, on the other hand, it is possible to produced by signal output apparatus and defeated Go out cross valve commutation abnormal signal, in order to air-conditioner commutates abnormal signal to four-way according to the cross valve received Valve keeps in repair automatically.
As shown in Figure 4, the embodiment of third aspect present invention provides a kind of air-conditioner, including second aspect Cross valve failure detector 300 described in any one embodiment.
The air-conditioner that the embodiment of third aspect present invention provides, including described in second aspect any one embodiment Cross valve failure detector 300, therefore, there is the cross valve described in second aspect any one embodiment The beneficial effect of failure detector 300, does not repeats them here.
Below in conjunction with Fig. 5, described cross valve fault detect side according to another embodiment of the invention is described Method, specifically includes following steps: step 501, it is judged that whether the conditions present residing for described air-conditioner meets Satisfied going to step 502 if pre-conditioned, if being unsatisfactory for, directly terminating to judge；Step 502, in sensing chamber The mode of operation that the temperature of heat exchanger and the temperature of indoor environment and user set, if detecting what user set Mode of operation is refrigeration mode or dehumidifier pattern, then go to step 503, if detecting the Working mould that user sets Formula is heating mode, then go to step 504；Step 503, it is judged that temperature T2 of indoor heat exchanger is the biggest In equal to temperature T1 of indoor environment and the first preset temperature value a DEG C sum, if T2 >=T1+a DEG C, then turn Step 505, if T2 ＜ T1+a DEG C, then goes to step 506；Step 504, it is judged that the temperature of indoor heat exchanger Whether T2 is less than or equal to temperature T1 and the second preset temperature value b DEG C sum of indoor environment, if T2≤ T1+b DEG C, then go to step 505, if T2 ＞ T1+b DEG C, then go to step 506；Step 505, it is determined that four-way Valve is in commutation abnormality, and exports cross valve commutation abnormal signal, then terminates to judge；Step 506, Judge that cross valve is in commutation normal condition, then terminate to judge.
Wherein, in step 501, described pre-conditioned one of following condition that at least includes: the fortune of air-conditioner The row time is more than or equal to the predetermined running time；The present mode of operation of described air-conditioner is non-automatic operation mould Formula；The present mode of operation of described air-conditioner is non-air-supply operational mode；Described air-conditioner currently run mould Formula is non-defrosting mode, and described air-conditioner is more than Preset Time away from the defrosting end time.
In step 503 and step 504, specifically, such as, the first preset temperature value a and second is preset Temperature value b can choose 1 DEG C, then when the mode of operation that user sets is as heating mode, if detecting indoor Ambient temperature T1 is 15 DEG C, and temperature T2 of indoor heat exchanger is 15.5 DEG C, i.e. T2 ＜ T1+1 DEG C then recognizes Do not have normal commutation for cross valve or commutate the most completely, i.e. cross valve is in commutation abnormality, now, 0.5 Degree Celsius the temperature difference be likely systematic sampling deviation, therefore, although temperature T2 of indoor heat exchanger is more than Indoor environment temperature T1, but still judge that cross valve does not has normal commutation or commutates the most completely, because, if If cross valve normal commutation, the temperature of indoor heat exchanger should be able to be far longer than indoor environment temperature.
Additionally, in step 505, it is determined that after cross valve is in commutation abnormality, also by dress of reporting to the police Put etc. and to report to the police to user or to control the cross valve maintenance unit pair in air-conditioner by abnormal signal output device Cross valve keeps in repair automatically.
In the description of this specification, term " embodiment ", " some embodiments ", " specific embodiment " Deng description means to combine this embodiment or example describes specific features, structure, material or feature be contained in In at least one embodiment of the present invention or example.In this manual, the schematic representation to above-mentioned term It is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy Point can combine in any one or more embodiments or example in an appropriate manner.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for this area For technical staff, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, Any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (11)

1. a cross valve fault detection method, for air-conditioner, it is characterised in that including:
The mode of operation that the temperature of detection indoor heat exchanger and the temperature of indoor environment and user set；
Working as of temperature according to described indoor heat exchanger and the described air-conditioner of the temperature section of sentencing of described indoor environment Front operational mode is the most identical with the mode of operation that described user sets, if described air-conditioner currently run mould The mode of operation that formula sets from described user is different, then judge that cross valve is in commutation abnormality, if described The mode of operation that the present mode of operation of air-conditioner sets with described user is identical, then judge at described cross valve In commutation normal condition.
Cross valve fault detection method the most according to claim 1, it is characterised in that
When detecting that mode of operation that described user sets is as refrigeration mode or dehumidifier pattern, described according to institute State the temperature of indoor heat exchanger and the present mode of operation of the described air-conditioner of the temperature section of sentencing of described indoor environment The detailed process the most identical with the mode of operation that described user sets as:
The temperature of the described indoor heat exchanger of the section of sentencing is the most pre-with first more than or equal to the temperature of described indoor environment If temperature value sum, if the temperature of described indoor heat exchanger is more than or equal to the temperature of described indoor environment with described First preset temperature value sum, then judge the work that the present mode of operation of described air-conditioner sets with described user Operation mode is different, if the temperature of described indoor heat exchanger is first pre-with described less than the temperature of described indoor environment If temperature value sum, then judge the mode of operation that the present mode of operation of described air-conditioner sets with described user Identical；
Wherein, described first preset temperature value more than or equal to detect described indoor heat exchanger temperature time detection Error amount.
Cross valve fault detection method the most according to claim 1, it is characterised in that
When detecting that mode of operation that described user sets is as heating mode, described according to described indoor heat exchange Whether the present mode of operation of the temperature of device and the described air-conditioner of the temperature section of sentencing of described indoor environment is with described The identical detailed process of mode of operation that user sets as:
The temperature of the described indoor heat exchanger of the section of sentencing is the most pre-with second less than or equal to the temperature of described indoor environment If temperature value sum, if the temperature of described indoor heat exchanger is less than or equal to the temperature of described indoor environment with described Second preset temperature value sum, then judge the work that the present mode of operation of described air-conditioner sets with described user Operation mode is different, if the temperature of described indoor heat exchanger is second pre-with described more than the temperature of described indoor environment If temperature value sum, then judge the mode of operation that the present mode of operation of described air-conditioner sets with described user Identical；
Wherein, described second preset temperature value more than or equal to detect described indoor heat exchanger temperature time detection Error amount.
Cross valve fault detection method the most according to any one of claim 1 to 3, its feature exists In, also include:
Judge whether the conditions present residing for described air-conditioner meets pre-conditioned；
When judging that the conditions present residing for described air-conditioner meets pre-conditioned, change in performing described sensing chamber The step of the mode of operation that the temperature of hot device and the temperature of indoor environment and user set；
Wherein, described pre-conditioned one of following condition that at least includes:
The operation time of described air-conditioner is more than or equal to the predetermined running time；
The present mode of operation of described air-conditioner is non-automatic operational mode；
The present mode of operation of described air-conditioner is non-air-supply operational mode；
The present mode of operation of described air-conditioner is non-defrosting mode, and described air-conditioner is away from the defrosting end time More than Preset Time.
Cross valve fault detection method the most according to claim 4, it is characterised in that also include:
After described judgement cross valve is in commutation abnormality, output cross valve commutation abnormal signal.
6. a cross valve failure detector, for air-conditioner, it is characterised in that including:
Detection device, for detecting the temperature of indoor heat exchanger and the temperature of indoor environment and the work of user's setting Operation mode；
Processing means, for the temperature section of the sentencing institute according to the temperature of described indoor heat exchanger and described indoor environment The present mode of operation stating air-conditioner is the most identical with the mode of operation that described user sets, and at described air-conditioning When the present mode of operation of device is different from the mode of operation that described user sets, it is determined that it is different that cross valve is in commutation Often state, and when the present mode of operation of described air-conditioner is identical with the mode of operation that described user sets, Judge that described cross valve is in commutation normal condition.
Cross valve failure detector the most according to claim 6, it is characterised in that described process Device is used for:
Detect that mode of operation that described user sets is as refrigeration mode or dehumidifier pattern at described detection device Time, whether the temperature of the described indoor heat exchanger of the section of sentencing is preset with first more than or equal to the temperature of described indoor environment Temperature value sum, and in the temperature of described indoor heat exchanger more than or equal to the temperature of described indoor environment with described During the first preset temperature value sum, it is determined that the work that the present mode of operation of described air-conditioner sets with described user Operation mode is different, and in the temperature of described indoor heat exchanger less than the temperature and described first of described indoor environment During preset temperature value sum, it is determined that the Working mould that the present mode of operation of described air-conditioner sets with described user Formula is identical；
Wherein, described first preset temperature value more than or equal to detect described indoor heat exchanger temperature time detection Error amount.
Cross valve failure detector the most according to claim 6, it is characterised in that described process Device is used for:
When described detection device detects that mode of operation that described user sets is as heating mode, described in the section of sentencing Whether the temperature of indoor heat exchanger is less than or equal to temperature and the second preset temperature value sum of described indoor environment, And it is default with described second less than or equal to the temperature of described indoor environment warm in the temperature of described indoor heat exchanger During angle value sum, it is determined that the mode of operation that the present mode of operation of described air-conditioner and described user set is not With, and in the temperature of described indoor heat exchanger more than temperature and described second preset temperature of described indoor environment During value sum, it is determined that the mode of operation that the present mode of operation of described air-conditioner sets with described user is identical；
Wherein, described second preset temperature value more than or equal to detect described indoor heat exchanger temperature time detection Error amount.
9., according to the cross valve failure detector according to any one of claim 6 to 8, its feature exists In, described processing means is additionally operable to:
Judge whether the conditions present residing for described air-conditioner meets pre-conditioned, and residing for described air-conditioner Conditions present when meeting pre-conditioned, control temperature and the indoor environment of detection device detection indoor heat exchanger Temperature and user set mode of operation；
Wherein, described pre-conditioned one of following condition that at least includes:
The operation time of described air-conditioner is more than or equal to the predetermined running time；
The present mode of operation of described air-conditioner is non-automatic operational mode；
The present mode of operation of described air-conditioner is non-air-supply operational mode；
The present mode of operation of described air-conditioner is non-defrosting mode, and described air-conditioner is away from the defrosting end time More than Preset Time.
Cross valve failure detector the most according to claim 9, it is characterised in that also include:
Output device, for described processing means determine described cross valve be in commutation abnormality after Output cross valve commutation abnormal signal.
11. 1 kinds of air-conditioners, it is characterised in that include as according to any one of claim 6 to 10 Cross valve failure detector.
CN201610298391.9A 2016-05-05 2016-05-05 Four-way valve fault detection method and device and air conditioner Pending CN105928279A (en)

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CN107143982A (en) * 2017-05-26 2017-09-08 广东美的制冷设备有限公司 Control method, device and the air conditioner of operating modes of air conditioner
CN107490221A (en) * 2017-07-20 2017-12-19 珠海格力电器股份有限公司 Four-way valve fault diagnosis, heat pump control method and air source heat pump system
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CN109990439B (en) * 2019-04-04 2021-01-19 宁波奥克斯电气股份有限公司 Control method and control device for abnormal reversing of air conditioner four-way valve and air conditioner
CN109990439A (en) * 2019-04-04 2019-07-09 宁波奥克斯电气股份有限公司 A kind of control method, control device and air conditioner that the commutation of air-conditioning four-way valve is abnormal
CN110160209A (en) * 2019-04-19 2019-08-23 青岛海尔空调器有限总公司 A kind of fault detection method and device, electrochemistry air-conditioning of electrochemistry air-conditioning
CN114402172A (en) * 2019-09-20 2022-04-26 三菱电机株式会社 Air conditioner
US12013159B2 (en) 2019-09-20 2024-06-18 Mitsubishi Electric Corporation Air-conditioning apparatus
CN110895062A (en) * 2019-11-11 2020-03-20 珠海格力电器股份有限公司 Control method and device of heat pump system, storage medium and heat pump system
CN111520816A (en) * 2020-05-13 2020-08-11 宁波奥克斯电气股份有限公司 Method and device for detecting reversing abnormality of four-way valve, air conditioner and storage medium
CN112611071A (en) * 2021-01-14 2021-04-06 南京天加环境科技有限公司 Improved method for judging failure of four-way valve of air-cooled air conditioning unit
CN113237208A (en) * 2021-05-25 2021-08-10 青岛海尔空调电子有限公司 Heat pump air conditioning unit and control method for abnormal reversing of four-way valve of heat pump air conditioning unit
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Application publication date: 20160907