CN106568251A - Refrigerating equipment defrosting control method and device and refrigerating equipment with device - Google Patents
Refrigerating equipment defrosting control method and device and refrigerating equipment with device Download PDFInfo
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- CN106568251A CN106568251A CN201610888002.8A CN201610888002A CN106568251A CN 106568251 A CN106568251 A CN 106568251A CN 201610888002 A CN201610888002 A CN 201610888002A CN 106568251 A CN106568251 A CN 106568251A
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- Prior art keywords
- vaporizer
- image
- collection
- frost amount
- defrost
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Classifications
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- 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
Abstract
The invention provides a refrigerating equipment defrosting control method and a device and refrigerating equipment with the device. The method comprises the following steps: an acquiring step: evaporator images are acquired under illuminating conditions; a judging step: the evaporator frost quantity is judged according to the acquired evaporator images; and a defrosting step: a defrosting heater is controlled to start or stop defrosting according to the evaporator frost quantity. On the basis of accurately judging the evaporator frost quantity, the accurate defrosting of an evaporator is realized, and the cost is low; and in addition, when the refrigerating equipment is primarily electrified, the evaporator faults can be detected.
Description
Technical field
The present invention relates to refrigeration technology field, more particularly to a kind of refrigeration plant defrosting control method, device and have should
The refrigeration plant of device.
Background technology
Refrigeration plant operation a period of time after, on vaporizer can gradually frosting, if defrosting operation can not be carried out in time,
Frost layer is more long-pending thicker, it will have a strong impact on the refrigeration of refrigeration plant.Therefore, the defrosting problem of refrigeration plant vaporizer is always
The problem of Shi Ge producers urgent need to resolve.
Most Defrost method is all the run time and door body on-off times according to refrigeration plant compressor at present, is come
Judge whether to need defrosting；Such as patent " CN103486782A refrigeration plants and its defrosting control method ", " CN101392979A mono-
Kind of defrosting control system of door switch counting refrigerator and its defrosting control method " etc., be all constantly amendment compressor operating time,
Relation between door body on-off times, defrost decision condition, to realize the defrost of refrigeration plant vaporizer.But due to this side
Method is judging whether the length for needing defrost and defrost time, rather than directly according to evaporation by some indirect conditions
Above device, the size of frosting degree is judged, it is thus possible to there is defrost not in time, and not exclusively, defrost overlong time causes for defrost
The problems such as power consumption is too big.
The content of the invention
In view of this, the invention provides a kind of refrigeration plant defrosting control method, including：Acquisition step：In illumination bar
Vaporizer image is gathered under part；Judge step：Vaporizer frost amount is judged according to the vaporizer image of the collection；Defrost step：
Defrost is started according to vaporizer frost amount control defrosting heater or stops defrost.
Alternatively, the acquisition step also includes：In the front opening luminaire of the collection vaporizer image, described
The luminaire is closed after collection vaporizer image；Or light source is provided to collection image using flasher.
Alternatively, also include：After the default very first time threshold time of compressor operating, and vaporizer temperature-sensitive bag numerical value
Under conditions of less than preset first temperature value, start to perform the acquisition step；Or it is default in defrosting heater heating
After second time threshold time, and the vaporizer temperature-sensitive bag numerical value starts to hold more than under conditions of preset second temperature value
The row acquisition step.
Alternatively, it is additionally included in when refrigeration plant goes up electricity for the first time and performs failure detection steps, in the failure detection steps
Start again afterwards to perform the acquisition step, judge step and defrost step, the failure detection steps include：In lighting condition
Lower collection vaporizer image, and the vaporizer image gathered during by the first upper electricity saves as vaporizer initial pictures；By institute
The vaporizer initial pictures and vaporizer original image for stating collection compare, if the vaporizer initial pictures of the collection and institute
The difference value of vaporizer original image is stated more than or equal to default first image differential threshold, then exports vaporizer fault alarm letter
Breath；The vaporizer original image is the standard picture of the fault-free vaporizer for prestoring.
Alternatively, the judgement step also includes：By the vaporizer image of the collection and the vaporizer initial pictures
Compare, if the vaporizer image of the collection is more than default second image difference with the difference value of the vaporizer initial pictures
Other threshold value, then judged result is that vaporizer frost amount frost amount more than standard；If the vaporizer image of the collection and institute
The difference value of vaporizer initial pictures is stated less than default 3rd image differential threshold, then judged result is that vaporizer frost amount is little
In the residual frost amount of standard.
Alternatively, the defrost step also includes：In the case where vaporizer frost amount frost amount more than the standard,
Close the compressor and control the defrosting heater and start defrost；Or it is residual less than the standard in vaporizer frost amount
In the case of frost amount, control the defrosting heater and stop defrost and control the compressor continuing to run with.
Alternatively, also include the area according to white portion in average gray value or image, obtain the difference of described image
It is not worth.
Alternatively, also include：Vaporizer frost amount described in statistical analysiss and the compressor operating time, the vaporizer sense
Relation between thermometer bulb numerical value, and according to vaporizer frost amount and the compressor operating time, the vaporizer temperature-sensitive bag
Relation between numerical value determines the very first time threshold value, first temperature value, the second image differential threshold；Statistical
Analyse the vaporizer frost amount and the relation between the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value, and root
Institute is determined according to vaporizer frost amount and the relation between the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
State the second time threshold, the second temperature value, the 3rd image differential threshold.
Another aspect of the present invention provides a kind of refrigeration plant defrosting control device again, including：Luminaire, for giving
Collection image provides light source；Acquisition module, for vaporizer image is gathered under lighting condition；Judge module, for according to institute
The vaporizer image for stating collection judges vaporizer frost amount；Defrost module, for according to vaporizer frost amount control defrost heating
Device starts defrost or stops defrost.
Alternatively, the luminaire includes illuminating lamp or flasher, and the illuminating lamp is in the collection vaporizer
The front opening of image, closes after the collection vaporizer image.
Alternatively, the acquisition module is additionally operable to：After the default very first time threshold time of compressor operating, and evaporate
Under conditions of device temperature-sensitive bag numerical value is less than preset first temperature value, start to perform the function that the acquisition module is performed；Or
After the defrosting heater heating preset for the second time threshold time, and the vaporizer temperature-sensitive bag numerical value is more than default second
Under conditions of temperature value, start to perform the function that the acquisition module is performed.
Alternatively, also including detection module, it is used for：Failure detection steps are performed during electricity on refrigeration plant is first, in institute
Start again to perform the function that the acquisition module, judge module and defrost module are performed, the event after stating failure detection steps
Barrier detecting step includes：Call acquisition module that vaporizer image is gathered under lighting condition, and gather during by the first upper electricity
Vaporizer image save as vaporizer initial pictures；By the vaporizer initial pictures of the collection and vaporizer original image phase
Contrast, if the vaporizer initial pictures of the collection are more than or equal to default first with the difference value of the vaporizer original image
Image differential threshold, then export vaporizer fault alarm information；The vaporizer original image is the fault-free vaporizer for prestoring
Standard picture.
Alternatively, the judge module is additionally operable to：By the vaporizer image of the collection and the vaporizer initial pictures
Compare, if the vaporizer image of the collection is more than default second image difference with the difference value of the vaporizer initial pictures
Other threshold value, then judged result is that vaporizer frost amount frost amount more than standard；If the vaporizer image of the collection and institute
The difference value of vaporizer initial pictures is stated less than default 3rd image differential threshold, then judged result is that vaporizer frost amount is little
In the residual frost amount of standard.
Alternatively, the defrost module is additionally operable to：In the case where vaporizer frost amount frost amount more than the standard,
Close the compressor and control the defrosting heater and start defrost；Or it is residual less than the standard in vaporizer frost amount
In the case of frost amount, control the defrosting heater and stop defrost and control the compressor continuing to run with.
Alternatively, the detection module and the judge module also include comparison unit, for according to average gray value or
The area of white portion in person's image, obtains the difference value of described image.
Alternatively, also including statistical module, it is used for：When described in statistical analysiss, vaporizer frost amount is with the compressor operating
Between, the relation between the vaporizer temperature-sensitive bag numerical value, and according to the vaporizer frost amount and the compressor operating time, institute
State the relation between vaporizer temperature-sensitive bag numerical value and determine the very first time threshold value, first temperature value, second image
Differential threshold；Vaporizer frost amount described in statistical analysiss and the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
Between relation, and according to the vaporizer frost amount and the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
Between relation determine second time threshold, the second temperature value, the 3rd image differential threshold.
Another aspect of the invention additionally provides a kind of refrigeration plant, with the refrigeration plant defrost control described in any of the above item
Device processed.
The technical scheme that the present invention is provided realizes the accuracy of vaporizer on the basis of accurately judging that frost is measured on vaporizer
Frost；Additionally, to refrigeration plant it is first on electricity when, vaporizer failure can also be detected.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the general frame figure of the refrigeration plant defrosting control method that the present invention is provided；
Fig. 2 is the control flow chart of the refrigeration plant defrosting control method that the present invention is provided；
Fig. 3 is the another control flow chart of the refrigeration plant defrosting control method that the present invention is provided；
Fig. 4 is the overall structure figure of the refrigeration plant defrosting control device that the present invention is provided；
Fig. 5 is a kind of structural representation of preferred embodiment of the refrigeration plant defrosting control device that the present invention is provided.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Corresponding accompanying drawing is clearly and completely described to technical solution of the present invention.Obviously, described embodiment is only the present invention one
Section Example, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The every other embodiment obtained under the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except here diagram or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, and for example, process, method, system, product or the equipment for containing series of steps or unit is not necessarily limited to
Those steps clearly listed or unit, but may include clearly not list or for these processes, method, product
Or intrinsic other steps of equipment or unit.
The invention provides a kind of refrigeration plant defrosting control method.Fig. 1 is the refrigeration plant defrost control that the present invention is provided
The general frame figure of method processed.As shown in figure 1, refrigeration plant defrosting control method of the present invention includes：Acquisition step S110：Shining
Vaporizer image is gathered under the conditions of bright；Judge step S120：Vaporizer frost amount is judged according to the vaporizer image of the collection；Change
White step S130：Defrost is started according to vaporizer frost amount control defrosting heater or stops defrost.The defrost side of the present invention
Method directly carries out judging whether the condition for meeting defrost according to the size of frosting degree above vaporizer, can realize preparing defrost.
Specifically, start defrost according to whether the frost amount of the vaporizer frost amount control defrosting heater more than standard；According to described
The frost amount frost amount control defrosting heater start-stop whether residual less than standard of vaporizer stops defrost.The defrosting method of the present invention is applied to
The refrigeration plants such as refrigerator, air-conditioning.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, acquisition step S110 also includes：
In the front opening luminaire of the collection vaporizer image, the illumination is closed after the collection vaporizer image and set
It is standby；Or light source is provided to collection image using flasher.The defrosting method of the present invention is by adding illuminating lamp, it is allowed to image
There is certain error, to the less demanding of image recognition, reduce cost of implementation.Fig. 2 is the refrigeration plant that the present invention is provided
The control flow chart of defrosting control method.As shown in Fig. 2 when performing collection vaporizer image step every time, all can first open steaming
Device luminaire is sent out, vaporizer luminaire is closed after collection with saves energy.
According to a kind of embodiment of the present invention with refrigeration plant defrosting control method, be additionally included in refrigeration plant it is first on
Failure detection steps are performed when electric, start again to perform the acquisition step after the failure detection steps, judge step and
Defrost step, the failure detection steps include：Vaporizer image is gathered under lighting condition, and is adopted during by the first upper electricity
The vaporizer image of collection saves as vaporizer initial pictures；By the vaporizer initial pictures of the collection and vaporizer original image
Compare, if the difference value of the vaporizer initial pictures of the collection and the vaporizer original image is more than or equal to default the
One image differential threshold, then export vaporizer fault alarm information；The vaporizer original image is the fault-free evaporation for prestoring
The standard picture of device.
Specifically, as shown in Fig. 2 on refrigeration plant during electricity, first determining whether whether refrigeration plant goes up electricity for the first time, judge system
The method whether cool equipment goes up electricity for the first time：One variable P is set, and initial value is 0, on refrigeration plant after electricity, reads and judge to become
Whether the value of amount P is 0：If 0, judgement is this time first upper electricity, and adds 1 by the value of variable P；If variable P when upper electric
Value is 1, then illustrate it is not first upper electricity.If refrigeration plant is not first upper electricity, first compressor operating for a period of time, starts
Normal work；If refrigeration plant is first upper electricity, collection vaporizer image step is performed, is now gathered during first upper electricity
Vaporizer image saves as vaporizer initial pictures M0, then by the mark of vaporizer initial pictures M0 and the fault-free vaporizer for prestoring
Quasi- image (i.e. vaporizer original image MA) compares, if the difference value of the two is more than or equal to default first image differential threshold
ε, i.e. | M0-MA |>ε, then perform vaporizer fault alarm step.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, also include：It is default in compressor operating
After very first time threshold time, and under conditions of vaporizer temperature-sensitive bag numerical value is less than preset first temperature value, start to perform institute
State acquisition step.As shown in Fig. 2 if not being gone up after electric or first upper electricity performed detecting step for the first time, compressor is transported
Row default δ minutes very first time threshold time N, vaporizer temperature-sensitive bag numerical value H1 are obtained afterwards, if vaporizer temperature-sensitive bag numerical value
H1 is more than preset first temperature value H δ, then compressor reruns default very first time threshold time N δ minutes；If vaporizer sense
Thermometer bulb numerical value H1 is less than preset first temperature value H δ, then perform acquisition step, gathers vaporizer image M1.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, judgement step S120 also includes：
The vaporizer image of the collection is compared with the vaporizer initial pictures, if the vaporizer image M1 of the collection with
The difference value of the vaporizer initial pictures M0 is vaporizer frost more than default second image differential threshold, then judged result
Amount frost amount more than standard.According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, the defrost step
S130 also includes：In the case where vaporizer frost amount frost amount more than the standard, close the compressor and control institute
State defrosting heater and start defrost.
Specifically, as shown in Fig. 2 after acquisition step mentioned above, by the image M1 for collecting with the beginning of vaporizer
Beginning, image M0 compared, if the difference value of the vaporizer image M1 of the collection and vaporizer initial pictures M0 is less than pre-
If then compressor continues to run with default very first time threshold time N δ minutes to the second image differential threshold δ, execution is repeated above-mentioned
Obtain temperature-sensitive bag numerical steps and acquisition step；If the vaporizer image M1 of the collection and vaporizer initial pictures M0
Difference value more than default second image differential threshold δ, i.e. | M1-M0 |>δ, then close compressor, opens defrosting heater.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, also include：In the defrosting heater
After the heating default second time threshold time, and the vaporizer temperature-sensitive bag numerical value is more than the condition of preset second temperature value
Under, start to perform the acquisition step.As shown in Fig. 2 the defrosting heater heating default second time threshold timeMinute, it
Vaporizer temperature-sensitive bag numerical value H1 is obtained afterwards, if vaporizer temperature-sensitive bag numerical value H1 is less than preset second temperature valueThen defrost adds
Hot device reheats the default second time threshold timeMinute；If vaporizer temperature-sensitive bag numerical value H1 is more than preset second temperature
ValueAcquisition step is then performed, vaporizer image M2 is gathered.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, judgement step S120 also includes：
If the vaporizer image of the collection is less than default 3rd image differential threshold with the difference value of the vaporizer initial pictures,
Then judged result is vaporizer frost amount frost amount residual less than standard.According to one kind of refrigeration plant defrosting control method of the present invention
Embodiment, defrost step S130 also include：Or in the situation of vaporizer frost amount frost amount residual less than the standard
Under, control the defrosting heater and stop defrost and control the compressor continuing to run with.
Specifically, as shown in Fig. 2 after acquisition step mentioned above, by the image M2 for collecting with the beginning of vaporizer
Beginning, image M0 compared, if the difference value of the vaporizer image M2 of the collection and vaporizer initial pictures M0 is more than pre-
If the 3rd image differential thresholdThen defrosting heater continues the heating default second time threshold timeMinute, repeat and hold
The above-mentioned acquisition temperature-sensitive bag numerical steps of row and acquisition step；If the vaporizer image M2 of the collection is initial with the vaporizer
The difference value of image M0 is less than default 3rd image differential threshold, i.e.,Then defrosting heater stops defrost, pressure
Contracting machine is continued to run with.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, also include according to average gray value or
The area of white portion in image, obtains the difference value of described image.
According to a kind of embodiment of refrigeration plant defrosting control method of the present invention, also include：Evaporate described in statistical analysiss
Device frost amount and the relation between the compressor operating time, the vaporizer temperature-sensitive bag numerical value, and according to vaporizer frost
Amount and the relation between the compressor operating time, the vaporizer temperature-sensitive bag numerical value determine the very first time threshold value, institute
State the first temperature value, the second image differential threshold；Described in statistical analysiss, vaporizer frost amount is heated with the defrosting heater
Relation between time, the vaporizer temperature-sensitive bag numerical value, and heated according to vaporizer frost amount and the defrosting heater
Relation between time, the vaporizer temperature-sensitive bag numerical value determine second time threshold, the second temperature value, described
Three image differential thresholds.By substantial amounts of test data, using statistical technique, relevant parameter threshold value is scientifically and rationally set, it is real
The effective defrost of existing evaporator of refrigerator, while reduce the energy consumption of refrigerator as far as possible.
Fig. 3 is the another control flow chart of the refrigeration plant defrosting control method that the present invention is provided.As shown in figure 3, in order to
Simplify defrosting control flow process, before defrost flow process is started and before defrost flow process is terminated, can be without detecting vaporizer sense
Thermometer bulb numerical value, heats in compressor operating N δ minutes or in defrosting heaterAcquisition step, collection are performed after minute directly
Vaporizer image.Compared with the control flow shown in Fig. 2, the advantage of this embodiment is that flow process is more simplified, structure is simpler,
Have the disadvantage that the priority that may cause defrost, higher than the priority of refrigeration, has influence on the refrigeration of refrigerator.
According to the another embodiment of refrigeration plant defrosting control method of the present invention, it would however also be possible to employ with flasher
Image capture device, to cancel vaporizer illuminating lamp.But need image processing process that there is higher place in this case
Reason speed, while image quality may be slightly poor；Need to the first image difference threshold epsilon, the second image differential threshold δ and the 3rd figure
As differential thresholdSome adjustment are carried out, defrost accuracy may be slightly poor.
Another aspect of the present invention provides a kind of refrigeration plant defrosting control device again.Fig. 4 is the system that the present invention is provided
The overall structure figure of cool equipment defrosting control device.As shown in figure 4, refrigeration plant defrosting control device of the present invention includes：Illumination
Equipment 100, for providing light source to collection image；Acquisition module 200, for vaporizer image is gathered under lighting condition；Sentence
Disconnected module 300, for judging vaporizer frost amount according to the vaporizer image of the collection；Defrost module 400, for according to described
Vaporizer frost amount control defrosting heater starts defrost or stops defrost.
According to a kind of embodiment of refrigeration plant defrosting control device of the present invention, the luminaire 100 includes illumination
Lamp or flasher, front opening of the illuminating lamp in the collection vaporizer image, the collection vaporizer image it
After close.
According to a kind of embodiment of refrigeration plant defrosting control device of the present invention, the acquisition module 200 is additionally operable to：
After the default very first time threshold time of compressor operating, and vaporizer temperature-sensitive bag numerical value is less than the condition of preset first temperature value
Under, start to perform the function that the acquisition module is performed；Or in default second time threshold of defrosting heater heating
Between after, and the vaporizer temperature-sensitive bag numerical value starts to perform the acquisition module more than under conditions of preset second temperature value
The function of execution.
Fig. 5 is a kind of structural representation of preferred embodiment of the refrigeration plant defrosting control device that the present invention is provided.Such as
Shown in Fig. 5, the refrigeration plant defrosting control device that the present invention is provided also includes detection module 500, is used for：It is first in refrigeration plant
Failure detection steps are performed when upper electric, starts again to perform the acquisition module, judge module after the failure detection steps
The function of performing with defrost module, the failure detection steps include：Acquisition module is called to gather vaporizer under lighting condition
Image, and the vaporizer image gathered during by the first upper electricity saves as vaporizer initial pictures；By the evaporation of the collection
Device initial pictures are compared with vaporizer original image, if the vaporizer initial pictures of the collection are original with the vaporizer
The difference value of image then exports vaporizer fault alarm information more than or equal to default first image differential threshold；The vaporizer
Original image is the standard picture of the fault-free vaporizer for prestoring.
According to a kind of embodiment of refrigeration plant defrosting control device of the present invention, the judge module 300 is additionally operable to：Will
The vaporizer image of the collection is compared with the vaporizer initial pictures, if the vaporizer image of the collection with it is described
The difference value of vaporizer initial pictures is that vaporizer frost amount is more than more than default second image differential threshold, then judged result
Standard frost amount；If the vaporizer image of the collection is with the difference value of the vaporizer initial pictures less than default 3rd figure
As differential threshold, then judged result is vaporizer frost amount frost amount residual less than standard.
According to a kind of embodiment of refrigeration plant defrosting control device of the present invention, the defrost module 400 is additionally operable to：
In the case that the vaporizer frost amount frost amount more than the standard, close the compressor and control the defrosting heater and open
Beginning defrost；Or in the case of residual frost amount, control the defrosting heater and stop less than the standard in vaporizer frost amount
Defrost simultaneously controls the compressor and continues to run with.
As shown in figure 5, according to a kind of embodiment of refrigeration plant defrosting control device of the present invention, the detection module
500 and the judge module 300 also include comparison unit 600, for according to white portion in average gray value or image
Area, obtains the difference value of described image.
As shown in figure 5, according to a kind of embodiment of refrigeration plant defrosting control device of the present invention, also including statistical module
700, it is used for：Described in statistical analysiss between vaporizer frost amount and the compressor operating time, the vaporizer temperature-sensitive bag numerical value
Relation, and according to vaporizer frost amount and pass between the compressor operating time, the vaporizer temperature-sensitive bag numerical value
System determines the very first time threshold value, first temperature value, the second image differential threshold；Vaporizer described in statistical analysiss
Frost amount and the relation between the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value, and according to the vaporizer
Frost amount and the relation between the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value determine the second time threshold
Value, the second temperature value, the 3rd image differential threshold.
Another aspect of the invention additionally provides a kind of refrigeration plant, with the refrigeration plant defrost control described in any of the above item
Device processed.
The technical scheme that the present invention is provided realizes the accuracy of vaporizer on the basis of accurately judging that frost is measured on vaporizer
Frost；Additionally, to refrigeration plant it is first on electricity when, vaporizer failure can also be detected.
Function described herein can be implemented in hardware, the software by computing device, firmware or its any combinations.
If implemented in the software by computing device, then computer can be stored in using function as one or more instructions or code
Transmitted on readable media or via computer-readable media.Other examples and embodiment will in of the invention and appended right
Ask in the scope and spirit of book.For example, be attributed to the property of software, function described above can use by processor,
The software that hardware, firmware, hardwired or the combination for appointing whichever in these are performed is implemented.Additionally, each functional unit can be with integrated
In a processing unit, or unit is individually physically present, it is also possible to which two or more units are integrated in
In one unit.
In several embodiments provided herein, it should be understood that disclosed technology contents, can pass through other
Mode is realized.Wherein, device embodiment described above is only schematic, such as the division of described unit, Ke Yiwei
A kind of division of logic function, can have when actually realizing other dividing mode, such as multiple units or component can with reference to or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
It is described as separating component explanation unit can be or may not be it is physically separate, as control dress
The part put can be or may not be physical location, you can local to be located at one, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected according to the actual needs to realize the purpose of this embodiment scheme.
If the integrated unit is realized and as independent production marketing or use using in the form of SFU software functional unit
When, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for contributing to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, use so that a computer including some instructions
Equipment (can be personal computer, server or network equipment etc.) perform the whole of each embodiment methods described of the invention or
Part steps.And aforesaid storage medium includes：USB flash disk, read only memory (ROM, Read-Only Memory), random access memory are deposited
Reservoir (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. are various can be with store program codes
Medium.
Embodiments of the invention are the foregoing is only, the present invention is not limited to, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within scope of the presently claimed invention.
Claims (17)
1. a kind of refrigeration plant defrosting control method, it is characterised in that include：
Acquisition step：Vaporizer image is gathered under lighting condition；
Judge step：Vaporizer frost amount is judged according to the vaporizer image of the collection；
Defrost step：Defrost is started according to vaporizer frost amount control defrosting heater or stops defrost.
2. method according to claim 1, it is characterised in that the acquisition step also includes：In the collection vaporizer
The front opening luminaire of image, closes the luminaire after the collection vaporizer image；Or using flash of light dress
Put light source is provided to collection image.
3. method according to claim 1 and 2, it is characterised in that also include：
After the default very first time threshold time of compressor operating, and vaporizer temperature-sensitive bag numerical value is less than preset first temperature value
Under conditions of, start to perform the acquisition step；Or
After the defrosting heater heating default second time threshold time, and the vaporizer temperature-sensitive bag numerical value is more than pre-
If under conditions of second temperature value, starting to perform the acquisition step.
4. the method according to any one of claim 1-3, it is characterised in that when being additionally included in refrigeration plant and going up electricity for the first time
Failure detection steps are performed, started again to perform the acquisition step after the failure detection steps, judged step and defrost
Step, the failure detection steps include：
Vaporizer image is gathered under lighting condition, and the vaporizer image gathered during by the first upper electricity saves as vaporizer
Initial pictures；
The vaporizer initial pictures of the collection and vaporizer original image are compared, if the vaporizer of the collection is initial
Image then exports vaporizer failure with the difference value of the vaporizer original image more than or equal to default first image differential threshold
Warning message；The vaporizer original image is the standard picture of the fault-free vaporizer for prestoring.
5. method according to claim 4, it is characterised in that the judgement step also includes：By the evaporation of the collection
Device image is compared with the vaporizer initial pictures, if the vaporizer image of the collection and the vaporizer initial pictures
Difference value more than default second image differential threshold, then judged result is that vaporizer frost amount frost more than standard and measured；Such as
The vaporizer image of really described collection is less than default 3rd image differential threshold with the difference value of the vaporizer initial pictures, then
Judged result is vaporizer frost amount frost amount residual less than standard.
6. method according to claim 5, it is characterised in that the defrost step also includes：
In the case where vaporizer frost amount frost amount more than the standard, the closing compressor simultaneously controls the defrost and adds
Hot device starts defrost；Or
In the case of residual frost amount, control the defrosting heater and stop defrost and control less than the standard in vaporizer frost amount
Make the compressor to continue to run with.
7. the method according to any one of claim 4-6, it is characterised in that also include according to average gray value or figure
As in, the area of white portion, obtains the difference value of described image.
8. the method according to any one of claim 5-7, it is characterised in that also include：
Vaporizer frost amount and the pass between the compressor operating time, the vaporizer temperature-sensitive bag numerical value described in statistical analysiss
System, and the relation according to vaporizer frost amount and between the compressor operating time, the vaporizer temperature-sensitive bag numerical value is true
The fixed very first time threshold value, first temperature value, the second image differential threshold；
Described in statistical analysiss between vaporizer frost amount and the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
Relation, and according between vaporizer frost amount and the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
Relation determines second time threshold, the second temperature value, the 3rd image differential threshold.
9. a kind of refrigeration plant defrosting control device, it is characterised in that include：
Luminaire, for providing light source to collection image；
Acquisition module, for vaporizer image is gathered under lighting condition；
Judge module, for judging vaporizer frost amount according to the vaporizer image of the collection；
Defrost module, for starting defrost according to vaporizer frost amount control defrosting heater or stopping defrost.
10. device according to claim 9, it is characterised in that the luminaire includes illuminating lamp or flasher,
Front opening of the illuminating lamp in the collection vaporizer image, closes after the collection vaporizer image.
11. devices according to claim 9 or 10, it is characterised in that the acquisition module is additionally operable to：
After the default very first time threshold time of compressor operating, and vaporizer temperature-sensitive bag numerical value is less than preset first temperature value
Under conditions of, start to perform the function that the acquisition module is performed；Or in defrosting heater heating default second time
After threshold time, and under conditions of the vaporizer temperature-sensitive bag numerical value is more than preset second temperature value, start to adopt described in execution
The function that collection module is performed.
12. devices according to any one of claim 9-11, it is characterised in that also including detection module, be used for：In system
Cool equipment performs failure detection steps when going up electricity for the first time, starts again to perform the collection mould after the failure detection steps
The function that block, judge module and defrost module are performed, the failure detection steps include：
Call acquisition module that vaporizer image, and the vaporizer image gathered during by the first upper electricity are gathered under lighting condition
Save as vaporizer initial pictures；
The vaporizer initial pictures of the collection and vaporizer original image are compared, if the vaporizer of the collection is initial
Image then exports vaporizer failure with the difference value of the vaporizer original image more than or equal to default first image differential threshold
Warning message；The vaporizer original image is the standard picture of the fault-free vaporizer for prestoring.
13. devices according to claim 12, it is characterised in that the judge module is additionally operable to：By the steaming of the collection
Send out device image to compare with the vaporizer initial pictures, if the vaporizer image of the collection and the vaporizer initial graph
The difference value of picture is that vaporizer frost amount frost amount more than standard more than default second image differential threshold, then judged result；
If the vaporizer image of the collection is less than default 3rd image differential threshold with the difference value of the vaporizer initial pictures,
Then judged result is vaporizer frost amount frost amount residual less than standard.
14. devices according to claim 13, it is characterised in that the defrost module is additionally operable to：
In the case where vaporizer frost amount frost amount more than the standard, the closing compressor simultaneously controls the defrost and adds
Hot device starts defrost；Or
In the case of residual frost amount, control the defrosting heater and stop defrost and control less than the standard in vaporizer frost amount
Make the compressor to continue to run with.
15. devices according to any one of claim 12-14, it is characterised in that the detection module and the judgement
Module also includes comparison unit, for the area according to white portion in average gray value or image, obtains described image
Difference value.
16. devices according to any one of claim 13-15, it is characterised in that also including statistical module, be used for：
Vaporizer frost amount and the pass between the compressor operating time, the vaporizer temperature-sensitive bag numerical value described in statistical analysiss
System, and the relation according to vaporizer frost amount and between the compressor operating time, the vaporizer temperature-sensitive bag numerical value is true
The fixed very first time threshold value, first temperature value, the second image differential threshold；
Described in statistical analysiss between vaporizer frost amount and the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
Relation, and according between vaporizer frost amount and the defrosting heater heat time heating time, the vaporizer temperature-sensitive bag numerical value
Relation determines second time threshold, the second temperature value, the 3rd image differential threshold.
17. a kind of refrigeration plants, with the refrigeration plant defrosting control device as any one of claim 9-16.
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