CN106500238B - Electric expansion valve fault detection method, device and multi-connected machine device systems - Google Patents

Electric expansion valve fault detection method, device and multi-connected machine device systems Download PDF

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Publication number
CN106500238B
CN106500238B CN201610817850.XA CN201610817850A CN106500238B CN 106500238 B CN106500238 B CN 106500238B CN 201610817850 A CN201610817850 A CN 201610817850A CN 106500238 B CN106500238 B CN 106500238B
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China
Prior art keywords
expansion valve
electric expansion
operating parameter
equipment
value
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CN106500238A (en
Inventor
杨都
吴江勇
王文灿
唐杰
叶铁英
赖东锋
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52Indication arrangements, e.g. displays

Abstract

The present invention discloses a kind of electric expansion valve fault detection method, device and multi-connected machine device systems.Wherein, this method comprises: monitoring device operating parameter;Fault detection is carried out to electric expansion valve according to equipment operating parameter.The present invention passes through monitoring device operating parameter, and fault detection is carried out to electric expansion valve according to equipment operating parameter, to realize rapid-maintenance, improve maintenance accuracy and efficiency, to efficiently solve the problem that in the prior art in electric expansion valve failure, cannot be used for quickly detecting.

Description

Electric expansion valve fault detection method, device and multi-connected machine device systems
Technical field
The present invention relates to field of communication technology, in particular to a kind of electric expansion valve fault detection method, device and Multi-connected machine device systems.
Background technique
Electric expansion valve is important as multi-connected machine (that is, multi-online air-conditioning system, that is to say that one drags multi-form air-conditioning) Component plays key effect in terms of the distribution of whole system refrigerant, system on demand operation.Electric expansion valve failure, such as open Degree is abnormal, can not be closed completely, and can directly result in user is reduced using air-conditioning experience, and the effect of refrigeration cool-down is not achieved.
In current technology, effective detection method is lacked to electric expansion valve failure, when electric expansion valve failure, very Difficult quick lock in problem needs not only resulting in maintenance cost increasing according to system difference operating condition, artificial long-time observation analysis Add, also affects user experience, and weaken brand competitiveness to a certain degree.
For in electric expansion valve failure, the problem that cannot be used for quickly detecting not yet proposes at present in the prior art Effective solution scheme.
Summary of the invention
A kind of electric expansion valve fault detection method, device and multi-connected machine device systems are provided in the embodiment of the present invention, with Solve the problem that in electric expansion valve failure, cannot be used for quickly detecting in the prior art.
In order to solve the above technical problems, one aspect of the present invention provides a kind of electric expansion valve fault detection method, wherein This method comprises: monitoring device operating parameter;Fault detection is carried out to electric expansion valve according to the equipment operating parameter.
Further, the equipment operating parameter is monitored, is specifically included: monitoring the equipment at interval of the first predetermined time Operating parameter;Wherein, the equipment operating parameter includes at least following one: interior machine tube temperature, environment temperature and switching on and shutting down time.
Further, fault detection is carried out to electric expansion valve according to the equipment operating parameter, comprising: set according to described Standby operating parameter and device history operating parameter, judge whether the electric expansion valve is in fault pre-alarming state;If so, After the fault detection instruction for receiving user, fault detection is carried out to the electric expansion valve.
Further, according to the equipment operating parameter and device history operating parameter, judge the electric expansion valve Whether fault pre-alarming state is in, comprising: as the σ value of equipment operation and the σ of device history recordvValue meets When, then determine that the electric expansion valve is in fault pre-alarming state:
Wherein, P value is to be according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, σ value According to the value that the equipment operating parameter monitored obtains, σvValue is the value obtained according to the device history operating parameter;
N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
Further, fault detection is carried out to the electric expansion valve, comprising: at interval of described in the monitoring of the second predetermined time Equipment operating parameter;Wherein, the lasting total duration of monitoring operation is T1;
WhenWhen establishment, then the electric expansion valve failure is determined;Wherein, Q and P1 are It is to continue in total duration time T1 according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, N Monitor number, ToutFor interior machine tube temperature, TinFor environment temperature.
Another aspect of the present invention provides a kind of electric expansion valve fault detection means, wherein the device includes: that monitoring is single First monitoring device operating parameter;Detection unit carries out fault detection to electric expansion valve according to the equipment operating parameter.
Further, the monitoring unit is also used to, and monitors the equipment operating parameter at interval of the first predetermined time;Its In, the equipment operating parameter includes at least following one: interior machine tube temperature, environment temperature and switching on and shutting down time.
Further, the detection unit further comprises warning module and detection module;
The warning module, for judging the electricity according to the equipment operating parameter and device history operating parameter Whether sub- expansion valve is in fault pre-alarming state, if so, triggering fault detection module;
The detection module, for carrying out event to the electric expansion valve after the fault detection instruction for receiving user Barrier detection.
Further, the warning module is also used to, as the σ value of equipment operation and the σ of device history recordvValue meetsWhen, then determine that the electric expansion valve is in fault pre-alarming state: where P value is according to equipment operation condition And electric expansion valve probability of malfunction integrates the empirical value obtained, what the equipment operating parameter monitored according to σ value obtained Value, σvValue is the value obtained according to the device history operating parameter;
N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
Further, the detection module, for monitoring the equipment operating parameter at interval of the second predetermined time;Its In, the lasting total duration of monitoring operation is T1, whenWhen establishment, then determine that the electronics is swollen Swollen valve failure;
Wherein, Q and P1 is to be according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, N Continue the monitoring number in total duration time T1, ToutFor interior machine tube temperature, TinFor environment temperature.
In another aspect, the multi-connected machine device systems include above-mentioned the present invention also provides a kind of multi-connected machine device systems A kind of electric expansion valve fault detection means.
It applies the technical scheme of the present invention, by monitoring device operating parameter, and it is swollen to electronics according to equipment operating parameter Swollen valve carries out fault detection, to realize rapid-maintenance, improves maintenance accuracy and efficiency, exists to efficiently solve the prior art When electric expansion valve failure, the problem that cannot be used for quickly detecting.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of electric expansion valve fault detection method according to an embodiment of the present invention;
Fig. 2 is a kind of structural schematic diagram of electric expansion valve fault detection means according to an embodiment of the present invention;
Fig. 3 is the structural schematic diagram of another electric expansion valve fault detection means according to an embodiment of the present invention.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention It is fixed.
Fig. 1 is a kind of electric expansion valve fault detection method according to an embodiment of the present invention, as shown in Figure 1, this method packet Include following steps:
S101, monitoring device operating parameter;
S102, fault detection is carried out to electric expansion valve according to the equipment operating parameter.
That is, the present invention carries out failure to electric expansion valve by monitoring device operating parameter, and according to equipment operating parameter Detection, to realize rapid-maintenance, to efficiently solve the prior art in electric expansion valve failure, cannot be used for quickly detecting Problem.
It should be noted that electric expansion valve of the present invention is the electric expansion valve on multi-online air-conditioning system, i.e., It is the electric expansion valve dragged on multi-form air-conditioning, and method of the present invention is equally applicable to any other be equipped with electronics On the multi-connected machine device systems of expansion valve.
Step S101 described in the embodiment of the present invention is specifically included: monitoring the equipment operation ginseng at interval of the first predetermined time Number;Wherein, the equipment operating parameter includes at least following one: interior machine tube temperature, environment temperature, on-off state, electronics are swollen Swollen valve state and switching on and shutting down time.
Specifically, because the equipment operating parameter of all monitorings is required to be acquired and store, and acquisition and storage It is required to expend the memory of Centralized Controller, so considering from Centralized Controller memory angle, the present invention is spaced certain between being Predetermined time is just monitored equipment operating parameter.
It should be noted that the predetermined time that the embodiment of the present invention is spaced can be set according to actual needs.
Wherein, the interior machine tube temperature of the embodiment of the present invention and environment temperature can be measured by sensor, and the present invention Be the switching on and shutting down time is obtained by on-off state, in addition, the present invention can also by record electric expansion valve state as Important parameter whether electric expansion valve failure.
Device history operating parameter described in the embodiment of the present invention is the equipment operating parameter recorded in equipment use process, That is, machine tube temperature, environment temperature, on-off state, electric expansion valve state and switching on and shutting down time in during equipment usage history.
When it is implemented, step S102 of the present invention is specifically included:
According to the equipment operating parameter and device history operating parameter, judge whether the electric expansion valve is in event Hinder alert status;
If it is, issuing the user with warning information.
After the fault detection instruction for receiving user, fault detection is carried out to the electric expansion valve.
When it is implemented, the present invention is the equipment that multi-connected machine is monitored and recorded by the Centralized Controller being connected with multi-connected machine Operating parameter and device history operating parameter realize whether determine electric expansion valve in advance by being compared to above-mentioned parameter Failure, to realize rapid-maintenance.
Present invention implementation is described according to the equipment operating parameter and device history operating parameter, judges that the electronics is swollen Whether swollen valve is in fault pre-alarming state, comprising:
As the σ value of equipment operation and the σ of device history recordvValue meetsWhen, then determine that the electronics is swollen Swollen valve is in fault pre-alarming state:
Wherein, P value is to be according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, σ value According to the value that the equipment operating parameter monitored obtains, σvValue is the value obtained according to device history operating parameter;
N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
That is, the present invention can judge in advance whether electric expansion valve may be deposited according to relevant equipment operating parameter It reminds after-sales staff to go to if it is just early warning is carried out in failure and checks maintenance, to promote maintenance efficiency.
When it is implemented, carrying out fault detection to the electric expansion valve described in the embodiment of the present invention, comprising:
The detection that the duration is T1 is carried out at interval of the second predetermined time T2, when calculated result meetsWhen, then determine the electric expansion valve failure;
Wherein, Q and P1 is to be according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, N Continue the monitoring number in total duration time T1, ToutFor interior machine tube temperature, TinFor environment temperature.
Specifically, those skilled in the art can run according to multi-line system and electric expansion valve probability of malfunction is comprehensive Q and P1 value out, and duration of be spaced the second predetermined time and detection is set according to specific needs.
The present invention provides a kind of electric expansion valve fault detection and method for early warning, on the one hand can be according to relevant equipment Operating parameter judges electric expansion valve in advance, and whether there may be failures, and if it is early warning is just carried out, prompting after-sales staff is gone to Check maintenance, after on the other hand entering early warning, can detect automatically determining electric expansion valve whether failure, and in the electricity for determining equipment When sub- expansion valve malfunction, malfunction coefficient is carried out, and administrator is notified by predetermined manner, to promote maintenance efficiency.
Method of the present invention will be illustrated by a specific example below:
Centralized Controller is calculated according to equipment operating parameter and the data of device history operating parameter according to intelligent algorithm Afterwards, judge automatically provide electric expansion valve whether the conclusion of failure, the present invention includes fault pre-alarming and the aspect of fault recognition two.
Specifically, electric expansion valve fault pre-alarming judgement of the invention is executed by following algorithm:
Centralized Controller timing is swollen every machine tube temperature, environment temperature, on-off state, electronics in the monitoring of the first predetermined time Swollen valve state and switching on and shutting down time obtain σ value according to following formula:
Wherein N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
And the history σ recorded with databasevIt is compared, when meeting following condition, issues fault pre-alarming:
Wherein P value is according to the empirical value obtained comprehensive situations such as multi-connection operation and electric expansion valve probability of malfunction.
Electric expansion valve fault detection judgement of the present invention is executed by following algorithm:
After user selects fault detection program, Centralized Controller is detected every the second predetermined time T2 by following algorithm, Duration is T1.
When calculated result meets following condition, electric expansion valve is judged are as follows: failure.
Wherein Q and P1 is according to multi-line system operation and the comprehensive empirical value obtained of electric expansion valve probability of malfunction.
N is the monitoring number in cycle T 1, and theoretically N is bigger, and accuracy rate of testing result is higher.
Corresponding to the electric expansion valve fault detection method of Fig. 1 introduction, a kind of electric expansion valve event is present embodiments provided Hinder detection device, a kind of structural block diagram of electric expansion valve fault detection means as shown in Figure 3, device setting with it is multi-joint On the connected Centralized Controller of machine, which includes: monitoring unit, is used for monitoring device operating parameter;
Detection unit, for carrying out fault detection to electric expansion valve according to the equipment operating parameter.
That is, the present invention monitors the equipment operating parameter of multi-connected machine by monitoring unit, and by detection unit according to equipment Operating parameter judge equipment electric expansion valve whether failure, can be realized rapid-maintenance, to efficiently solve existing skill Art is in electric expansion valve failure, the problem that cannot be used for quickly detecting.
It should be noted that device of the present invention may be used on any multi-connected machine device systems, e.g., in multi-connected machine Entreat air-conditioning etc..
Further, monitoring unit described in the embodiment of the present invention is also used to, and is set at interval of described in the monitoring of the first predetermined time Standby operating parameter;Wherein, the equipment operating parameter includes at least following one: interior machine tube temperature, environment temperature, switching on and shutting down shape State, electric expansion valve state, switching on and shutting down time.
Specifically, because the equipment operating parameter of all monitorings is required to be acquired and store, and acquisition and storage It is required to expend the memory of Centralized Controller, so considering from Centralized Controller memory angle, the present invention is spaced certain between being Predetermined time is just monitored equipment operating parameter.
It should be noted that the predetermined time that the embodiment of the present invention is spaced can be set according to actual needs.
Equipment operating parameter described in the embodiment of the present invention includes interior machine tube temperature, environment temperature, on-off state, electronic expansion The parameters such as valve state and switching on and shutting down time.
Wherein, the interior machine tube temperature of the embodiment of the present invention and environment temperature can be measured by sensor, and the present invention Be the switching on and shutting down time is obtained by on-off state, in addition, the present invention can also by record electric expansion valve state as Important parameter whether multi-connected machine electric expansion valve failure.
Device history operating parameter described in the embodiment of the present invention is the equipment operating parameter recorded in equipment use process, That is, machine tube temperature, environment temperature, on-off state, electric expansion valve state and switching on and shutting down time in during equipment usage history.
Further, detection unit described in the embodiment of the present invention further comprises warning module and detection module;Wherein, in advance Alert module judges whether the electric expansion valve breaks down according to the equipment operating parameter and device history operating parameter Early warning if it is, issuing the user with warning information, and triggers fault detection module;Detection module is in the event for receiving user After hindering detection instruction, fault detection is carried out to the electric expansion valve.
When it is implemented, device described in the embodiment of the present invention further include: warning module is working as equipment by warning module The σ value of operation and the σ of device history recordvValue meetsWhen, then it is pre- to determine that the electric expansion valve is in failure The state of police: where P value is that the empirical value obtained is integrated according to multi-connection operation and electric expansion valve probability of malfunction, according to σ value The value that the equipment operating parameter monitored obtains, σvValue is the value obtained according to device history operating parameter;
N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
That is, the present invention can judge in advance whether electric expansion valve may be deposited according to relevant equipment operating parameter It reminds after-sales staff to go to if it is just early warning is carried out in failure and checks maintenance, to promote maintenance efficiency.
Further, detection module of the embodiment of the present invention carries out the inspection that the duration is T1 at interval of the second predetermined time T2 It surveys, when calculated result meetsWhen, then determine the electric expansion valve failure;Wherein, Q and It is to continue total duration time T1 that P1, which is according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, N, Interior monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature.
Fig. 3 is the structural schematic diagram of another electric expansion valve fault detection means according to an embodiment of the present invention, such as Fig. 3 Shown, which is arranged in Centralized Controller, and relative to the device in Fig. 2, the device is mainly by communication module, detection mould The part such as block, warning module, computing module, display module, database module is constituted;
Wherein, communication module is equivalent to above-mentioned monitoring unit, for realizing environment temperature, electric expansion valve state, pipe The detection and acquisition of the parameters such as temperature, on-off state and switching on and shutting down time;
Computing module is used for as warning module and detection module provides various operations and algorithm is supported;
Database module realize multi-connected machine on-off state, switching on and shutting down time, electric expansion valve state and corresponding tube temperature and σvEtc. parameters record;
Detection module realizes being detected and determined for electric expansion valve failure, obtains conclusion whether electric expansion valve failure, And administrator is notified by display module or in a manner of mail etc.;
Warning module judges whether failure early warning according to the result of computing module, and by display module or with mail Etc. modes notify administrator;
Display module realizes electric expansion valve warning information, display of fault message etc..
That is, one aspect of the present invention can judge in advance electricity according to relevant equipment operating parameter by warning module Whether there may be failures for sub- expansion valve, and if it is early warning is just carried out, prompting after-sales staff, which is gone to, checks maintenance, on the other hand exists Into after early warning, can be detected automatically by detection unit determine electric expansion valve whether failure, when the electronic expansion for determining equipment When valve failure, triggering display unit carries out malfunction coefficient, and notifies administrator by predetermined manner, to promote maintenance efficiency.
System related content in the embodiment of the present invention can refer to Installation practice part and embodiment of the method part and carry out Understand, details are not described herein.
Correspondingly, the multi-connected machine device systems include above-mentioned the embodiment of the invention provides a kind of multi-connected machine device systems Any one described in electric expansion valve fault detection means.
System related content in the embodiment of the present invention can refer to Installation practice part and embodiment of the method part and carry out Understand, details are not described herein.
From the above description it is found that the present invention is by monitoring the equipment operating parameter of multi-connected machine, and run according to equipment Parameter and device history operating parameter come judge equipment electric expansion valve whether failure, that is to say, that the present invention is by will be more The equipment operating parameter and device history operating parameter of on-line equipment compare, to realize determine whether electric expansion valve is former in advance Barrier, and when determining failure, it can be realized rapid-maintenance, so that the prior art is efficiently solved in electric expansion valve failure, The problem that cannot be used for quickly detecting.
It certainly, is the preferred embodiment of the present invention above.It should be pointed out that for those skilled in the art For, without departing from the basic principles of the invention, several improvements and modifications can also be made, these improvements and modifications It is considered as protection scope of the present invention.

Claims (7)

1. a kind of electric expansion valve fault detection method, which is characterized in that the described method includes:
Monitoring device operating parameter;
Fault detection is carried out to electric expansion valve according to the equipment operating parameter;
Fault detection is carried out to electric expansion valve according to the equipment operating parameter, comprising:
According to the equipment operating parameter and device history operating parameter, it is pre- to judge whether the electric expansion valve is in failure Alert state;
If so, carrying out fault detection to the electric expansion valve after the fault detection instruction for receiving user;
According to the equipment operating parameter and device history operating parameter, it is pre- to judge whether the electric expansion valve is in failure Alert state, comprising:
As the σ value of equipment operation and the σ of device history recordvValue meetsWhen, then determine at the electric expansion valve In fault pre-alarming state:
Wherein, P value is that the empirical value obtained is integrated according to equipment operation condition and electric expansion valve probability of malfunction, according to σ value The value that the equipment operating parameter monitored obtains, σvValue is the value obtained according to the device history operating parameter;
N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
2. electric expansion valve fault detection method according to claim 1, which is characterized in that monitor the equipment operation ginseng Number, specifically includes:
The equipment operating parameter is monitored at interval of the first predetermined time;Wherein, the equipment operating parameter includes at least following One of: interior machine tube temperature, environment temperature and switching on and shutting down time.
3. according to right want 1 described in electric expansion valve fault detection method, which is characterized in that the electric expansion valve carry out Fault detection, comprising:
The equipment operating parameter is monitored at interval of the second predetermined time;Wherein, the lasting total duration of monitoring operation is T1;
WhenWhen establishment, then the electric expansion valve failure is determined;Wherein, according to Q and P1 Equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, N are the monitoring continued in total duration time T1 Number, ToutFor interior machine tube temperature, TinFor environment temperature.
4. a kind of electric expansion valve fault detection means, which is characterized in that described device includes:
Monitoring unit is used for monitoring device operating parameter;
Detection unit, for carrying out fault detection to electric expansion valve according to the equipment operating parameter;
The detection unit further comprises warning module and detection module;
The warning module, for judging that the electronics is swollen according to the equipment operating parameter and device history operating parameter Whether swollen valve is in fault pre-alarming state, if so, triggering fault detection module;
The detection module, for carrying out failure inspection to the electric expansion valve after the fault detection instruction for receiving user It surveys;
The warning module is also used to, as the σ value of equipment operation and the σ of device history recordvValue meetsWhen, then Determine that the electric expansion valve is in fault pre-alarming state: where P value is according to equipment operation condition and electric expansion valve failure The empirical value that Probabilistic Synthesis obtains, the value that the equipment operating parameter monitored according to σ value obtains, σvValue is according to The value that device history operating parameter obtains;
N is monitoring number, ToutFor interior machine tube temperature, TinFor environment temperature, ToffFor the switching on and shutting down time.
5. electric expansion valve fault detection means according to claim 4, which is characterized in that
The monitoring unit is also used to, and monitors the equipment operating parameter at interval of the first predetermined time;Wherein, the equipment fortune Row parameter includes at least following one: interior machine tube temperature, environment temperature and switching on and shutting down time.
6. according to right want 4 described in electric expansion valve fault detection means, which is characterized in that
The detection module, for monitoring the equipment operating parameter at interval of the second predetermined time;Wherein, monitoring operation is held Continuous total duration is T1, whenWhen establishment, then the electric expansion valve failure is determined;
Wherein, Q and P1 is according to equipment operation condition and the comprehensive empirical value obtained of electric expansion valve probability of malfunction, and N is lasting Monitoring number in total duration time T1, ToutFor interior machine tube temperature, TinFor environment temperature.
7. a kind of multi-connected machine device systems characterized by comprising electronic expansion described in any one of claim 4-6 Valve fault detection means.
CN201610817850.XA 2016-09-12 2016-09-12 Electric expansion valve fault detection method, device and multi-connected machine device systems Active CN106500238B (en)

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