CN106679325A

CN106679325A - Method and device for icing protection for evaporator of refrigerator, and refrigerator

Info

Publication number: CN106679325A
Application number: CN201710013622.1A
Authority: CN
Inventors: 金永益; 卢玉波; 闫军旺; 赵志磊; 高华亮
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2017-01-09
Filing date: 2017-01-09
Publication date: 2017-05-17

Abstract

The embodiment of the invention provides a method and a device for icing protection for an evaporator of a refrigerator, and the refrigerator, and relates to the field of refrigerators. Whether the evaporator is iced or not can be judged according to the change of a temperature in the refrigerator to judge whether the refrigerator enters an evaporator defrosting running mode or not, so that the accuracy of defrosting running judgement for the evaporator of the refrigerator is improved. The method comprises the following steps: acquiring the maximum temperature difference in a first preset time length of refrigeration running of the refrigerator after the refrigeration of the refrigerator is started; judging whether a door-opening action exists in the first preset time length of the refrigeration running of the refrigerator or not; when the door-opening action does not exist in the first preset time length of the refrigeration running of the refrigerator, judging whether the maximum temperature difference is greater than or equal to a temperature difference threshold value or not; or else, determining that the evaporator is iced, and controlling the refrigerator to enter the evaporator defrosting running mode. The embodiment of the invention is applied to the field of refrigerators.

Description

A kind of evaporator of refrigerator icing guard method, device and refrigerator

Technical field

The present invention relates to refrigerator field, more particularly to a kind of evaporator of refrigerator icing guard method, device and refrigerator.

Background technology

Used as not retrievable a kind of electrical equipment in modern life, it is mainly responsible for prevents food from degenerating corruption to refrigerator Effect, the refrigerating function in refrigerator is to realize this indispensable ring of effect, but process of refrigerastion time length often makes Evaporimeter in refrigerator freezes so as to cause refrigeration to substantially reduce, so can all exist for evaporimeter in existing refrigerator Freeze the evaporimeter defrost operational mode tackled, and to detect in time when evaporator of refrigerator freezes and carries out defrost to it. But traditional refrigerator defrost program is not intelligent enough, mainly entered according to compressor Cumulative Elapsed Time and accumulative opening time Defrost, wherein accumulative opening time mainly considers that outside vapor under cryogenic evaporates refrigerator inside after entering Device has icing phenomenon to produce；But so only problem that may arise is that using the cumulative time as the Rule of judgment of evaporimeter defrost： Compressor Cumulative Elapsed Time, accumulation opening time and evaporimeter freeze certain relation, but is not absolute.Compressor is transported The row time is long, and the long evaporimeter of opening time not necessarily freezes seriously, and compressor operating time is short, and opening time is short it cannot be guaranteed that steaming Send out device not freeze.So current evaporimeter defrost judgment mode has certain risk, there is waste, simultaneously as to ensure Refrigeration is normal, and defrost interval can take relatively small value, defrost after a period of time that many times can freeze more completely, part In the case of it could even be possible to entirely dispensable defrost.

The content of the invention

Embodiments of the invention provide a kind of evaporator of refrigerator icing guard method, device and refrigerator, can be according to refrigerator Whether the temperature inside the box change freezes to evaporimeter and is judged, so as to determine whether refrigerator is evaporated device defrost operational mode, to carry The accuracy that high evaporator of refrigerator defrost operation judges.

To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：

First aspect, there is provided a kind of evaporator of refrigerator icing guard method, the method includes：

After refrigeration for refrigerator starts, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained；Detection is in ice Whether there is door opening action in the predetermined time period of case refrigerating operaton first；Do not have when refrigeration for refrigerator is run in the first predetermined time period When having door opening action, judge maximum temperature difference whether more than or equal to temperature difference threshold；If it is not, determining that evaporimeter freezes, refrigerator is controlled Into evaporimeter defrost operational mode.

Second aspect, there is provided a kind of evaporator of refrigerator icing protection device, the device includes：

Temperature detecting module, runs in the first predetermined time period for after refrigeration for refrigerator starts, obtaining refrigeration for refrigerator Maximum temperature difference；Judge module, runs in the first predetermined time period whether have door opening action for detection in refrigeration for refrigerator；Sentence When disconnected module is additionally operable to not have door opening action in determination refrigeration for refrigerator the first predetermined time period of operation, whether maximum temperature difference is judged More than or equal to temperature difference threshold；If it is not, determining that evaporimeter freezes；Control module, for determining that evaporimeter freezes when judge module When, control refrigerator enters evaporimeter defrost operational mode.

A kind of third aspect, there is provided refrigerator, including above-mentioned evaporator of refrigerator icing protection device.

Evaporator of refrigerator icing guard method, device and refrigerator that such scheme is provided, the method is first in refrigeration for refrigerator After beginning, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained；It is simultaneously pre- in refrigeration for refrigerator operation first If judging run in the first predetermined time period whether have door opening action in refrigeration for refrigerator in time span；When refrigeration for refrigerator operation When there is no door opening action in the first predetermined time period, judge maximum temperature difference whether more than or equal to temperature difference threshold；If it is not, determining Evaporimeter freezes, into evaporimeter defrost operational mode.Evaporator of refrigerator icing guard method provided in an embodiment of the present invention because It is to be judged so as to determine ice whether evaporimeter freezes according to the change of refrigerator the temperature inside the box after collection refrigerator the temperature inside the box Whether case is evaporated device defrost operational mode, improves the accuracy that evaporator of refrigerator defrost operation judges.

Description of the drawings

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is a kind of evaporator of refrigerator icing guard method schematic flow sheet provided in an embodiment of the present invention；

Fig. 2 is the influence curve schematic diagram that door opening action provided in an embodiment of the present invention changes to refrigerator the temperature inside the box；

Fig. 3 is refrigerator the temperature inside the box change curve under evaporator of refrigerator ice condition provided in an embodiment of the present invention；

Fig. 4 is a kind of evaporator of refrigerator icing guard method schematic flow sheet that the embodiment of the present invention one is provided；

Fig. 5 is a kind of evaporator of refrigerator icing guard method schematic flow sheet that the embodiment of the present invention two is provided；

Fig. 6 is a kind of evaporator of refrigerator icing guard method schematic flow sheet that the embodiment of the present invention three is provided；

Fig. 7 is a kind of evaporator of refrigerator icing guard method schematic flow sheet that the embodiment of the present invention four is provided；

Fig. 8 is a kind of evaporator of refrigerator icing protection device structural representation provided in an embodiment of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

For the ease of clearly describing the technical scheme of the embodiment of the present invention, in an embodiment of the present invention, employ " the One ", the printed words such as " second " identical entry essentially identical to function and effect or similar item make a distinction, and those skilled in the art can To understand that the printed words such as " first ", " second " are not that quantity and execution order are being defined.

It should be noted that in the embodiment of the present invention, the word such as " exemplary " or " such as " makees example, example for expression Card or explanation.Any embodiment or design for being described as " exemplary " or " such as " in the embodiment of the present invention should not It is interpreted than other embodiments or design more preferably or more advantage.Specifically, " exemplary " or " example are used Such as " word is intended to that related notion is presented in a concrete fashion.In the embodiment of the present invention, " (English：Of) ", " corresponding (English： Corresponding, relevant) " and " corresponding (English：Corresponding) " can use with sometimes, it should be pointed out that Be, when its difference is not emphasized, its is to be expressed be meant that it is consistent.

Existing refrigerator defrost program is not intelligent enough, mainly according to Cumulative Elapsed Time and cumulative time entranceization of opening the door Frost, but so only problem that may arise is that using the cumulative time as the Rule of judgment of evaporimeter defrost：Compressor accumulation operation Time, accumulation opening time and evaporimeter freeze certain relation, but is not absolute.Compressor operating time is long, opens the door Time long evaporimeter not necessarily freezes seriously, and compressor operating time is short, and opening time is short it cannot be guaranteed that evaporimeter does not freeze. So current evaporimeter defrost judgment mode has certain risk, there is waste.

In order to solve the above problems, with reference to shown in Fig. 1, the embodiment of the present invention provides a kind of evaporator of refrigerator icing protection side Method, including：

101st, after refrigeration for refrigerator starts, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained.

It is exemplary, herein the first described predetermined time period be usually no more than used by one cooling cycle of refrigerator when Between.

102nd, detection runs in the first predetermined time period whether have door opening action in refrigeration for refrigerator；

103rd, when refrigeration for refrigerator runs does not have door opening action in the first predetermined time period, judge whether maximum temperature difference is big In or equal to temperature difference threshold.

Specifically, when refrigeration for refrigerator runs does not have door opening action in the first predetermined time period, detection now is illustrated As a result the impact opened the door is not exposed to, is accurate, be can be used to as the foundation for judging whether to evaporimeter defrost operation； Temperature threshold herein refer to according to actual data artificially calculate the proper refrigerator of acquisition it is normal in the case of refrigeration for refrigerator fortune The minimum of a value that the temperature that refrigeration for refrigerator operation should be caused after the predetermined time period of row first is reduced.

Exemplary, when evaporator of refrigerator is normal, refrigerator temperature change change curve substantially has out as shown in Fig. 2 working as During door action, temperature can rise, and then can comparatively fast fall after rise after closing of the door, if being not excluded for enabling part in deterministic process Affect, maximum temperature difference can be caused to diminish, cause system erroneous judgement refrigeration abnormal, so needing to exclude door opening action this portion temperature Rise the impact for judging that freezes to overall evaporimeter.

104th, when maximum temperature difference is less than temperature difference threshold, determine that evaporimeter freezes, control refrigerator is transported into evaporimeter defrost Row mode.

Exemplary, when evaporimeter freezes, the temperature difference meeting as shown in figure 3, refrigeration fluctuation slows down of refrigerator the temperature inside the box curve Diminish, end temperature can also rise.

The evaporator of refrigerator icing guard method that such scheme is provided obtains refrigeration for refrigerator first after refrigeration for refrigerator starts Run the maximum temperature difference in the first predetermined time period；Run in the first predetermined time period in refrigeration for refrigerator simultaneously and detect in ice Whether there is door opening action in the predetermined time period of case refrigerating operaton first；Do not have when refrigeration for refrigerator is run in the first predetermined time period When having door opening action, judge maximum temperature difference whether more than or equal to temperature difference threshold；When maximum temperature difference is less than temperature difference threshold, it is determined that Evaporimeter freezes, into evaporimeter defrost operational mode.Evaporator of refrigerator icing guard method provided in an embodiment of the present invention because It is to be judged so as to determine ice whether evaporimeter freezes according to the change of refrigerator the temperature inside the box after collection refrigerator the temperature inside the box Whether case is evaporated device defrost operational mode, improves the accuracy that evaporator of refrigerator defrost operation judges.

102 steps in for such scheme, have enabling when detecting refrigeration for refrigerator and running in the first predetermined time period During action, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is reacquired.Reacquire refrigeration for refrigerator operation Judge whether evaporimeter freezes again after maximum temperature difference in first predetermined time period, door opening action can be avoided to steaming Send out device freeze judge impact, make refrigerator whether be evaporated device defrost operation more accurately judge.

In addition, because it be not necessarily that evaporimeter icing causes that refrigeration goes wrong in refrigeration for refrigerator running, In order to not cause erroneous judgement, evaporator of refrigerator icing guard method provided in an embodiment of the present invention obtaining refrigeration for refrigerator operation first Also include before maximum temperature difference in predetermined time period：When judging compressor accumulation operation after last evaporimeter defrost operation Between whether be more than or equal to the second predetermined time period；Compressor Cumulative Elapsed Time is big after last evaporimeter defrost runs In or during equal to the second predetermined time period, obtain the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period.

The second predetermined time period is less than when compressor Cumulative Elapsed Time after last evaporimeter defrost runs is detected When, whether evaporimeter is not frozen and is judged namely not going to obtain in refrigeration for refrigerator the first predetermined time period of operation Maximum temperature difference.Because, after last evaporimeter defrost terminates, if the length of the time of compressor operating does not reach second During predetermined time period, it is very low that not normal situation of now freezing is the probability caused by evaporimeter freezes, and so can be caused Some unnecessary detections and judgement；And if the length of the time of compressor operating is equal to or more than the second predetermined time period When, if refrigeration for refrigerator is not normal, then now reason be evaporimeter freeze probability be sufficiently large, what is then produced is each Detection and the deterministic process overwhelming majority are all effective procedures, and then also save unnecessary energy consumption.Mentioned here second is pre- If time span is artificial actual test, whether being suitable as out (steams into whole evaporimeter icing guard method flow process Send out device icing defence program) basis for estimation compressor operating time.

It should be noted that running evaporator protection program in actual refrigerator, (refrigerator i.e. provided in an embodiment of the present invention steams Send out device icing guard method) when, once compressor accumulation has been run after the second predetermined time period after defrost on determining, also Including：

Whether refrigerator is judged in process of refrigerastion, preset if it is, carrying out next step and obtaining refrigeration for refrigerator operation first Maximum temperature difference in time span；Require whether i.e. refrigerator itself receives user if not then judging whether refrigerator has to freeze The refrigeration that triggering sends is required；Judging refrigerating operaton now whether can be carried out, (Rule of judgment can be compression if any Whether machine stopped more than five minutes), if can if refrigerator initially enter refrigerating operaton and perform 101 steps.

These judge that step is because in actual motion, evaporator of refrigerator icing protection side provided in an embodiment of the present invention Method just works on the basis of refrigeration for refrigerator operation, thus need to judge now refrigerator whether in refrigerating operaton or It is no to enter refrigerating operaton；In addition for the consideration to aspects such as refrigerator service lifes, just stop in some such as compressors When work was less than 5 minutes, it is impossible to directly start refrigerating operaton, but after compressor " rest " should be waited enough 5 minutes Refrigerator can just carry out refrigerating operaton.

The maximum temperature difference obtained in refrigeration for refrigerator the first predetermined time period of operation in step 101 in such scheme can Being to include：Obtain first the temperature inside the box when refrigeration for refrigerator operation starts；Obtain refrigeration for refrigerator the first Preset Time of operation long Second the temperature inside the box when spending；The difference for calculating first the temperature inside the box and second the temperature inside the box is pre- as refrigeration for refrigerator operation first If the maximum temperature difference in time span.

The maximum temperature difference obtained in refrigeration for refrigerator the first predetermined time period of operation in step 101 in such scheme is also Can include：Obtain the temperature inside the box when refrigeration for refrigerator operation starts；Refrigeration for refrigerator runs every in the first predetermined time period A temperature inside the box is obtained every the 3rd predetermined time period；Highest the temperature inside the box in all the temperature inside the box for getting of calculating and The difference of minimum the temperature inside the box runs the maximum temperature difference in the first predetermined time period as refrigeration for refrigerator.

When detect refrigeration for refrigerator run the first predetermined time period in have door opening action when, reacquire refrigeration for refrigerator fortune Maximum temperature difference in the predetermined time period of row first；The mode of acquisition there are two ways：

One kind be when refrigeration for refrigerator run the first predetermined time period in have door opening action when, the current refrigeration cycle it is next The maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is reacquired during cooling cycle.

Another kind is that, when refrigeration for refrigerator runs and has door opening action in the first predetermined time period, occur from door opening action Stop running refrigeration for refrigerator the acquisition of the maximum temperature difference in the first predetermined time period from moment；When the door closes, Jiang Menguan Close the moment warm as the maximum that refrigeration for refrigerator operation start time reacquisition refrigeration for refrigerator is run in the first predetermined time period Difference.Specifically, presetting door close moment as refrigeration for refrigerator operation start time reacquisition refrigeration for refrigerator operation first If current refrigeration end cycle during maximum temperature difference in time span, then no longer evaporimeter is frozen and judged, and It is that next cooling cycle in the current refrigeration cycle restarts to obtain refrigeration for refrigerator and runs in the first predetermined time period most Accordingly judged after the big temperature difference.

It should be noted that the evaporator of refrigerator that such scheme is mentioned freezes in protection, no matter for what stage, if This moment because client's control or refrigerator system reason refrigerating operaton itself stop, then now evaporator of refrigerator icing protection side The items mentioned in method are all no longer carried out for the judgement whether evaporator of refrigerator freezes, and when next time, cooling cycle restarts When start to obtain the Parameter Conditions needed for new temperature etc. judges again, then carry out follow-up evaporimeter and freeze to judge step.

For clearer explanation evaporator of refrigerator icing guard method provided in an embodiment of the present invention, for two kinds of acquisitions Refrigeration for refrigerator runs the mode of the maximum temperature difference in the first predetermined time period and two kinds when refrigeration for refrigerator operation first is default Between reacquire the mode that refrigeration for refrigerator runs the maximum temperature difference in the first predetermined time period when having door opening action in length, under Face will be described in detail with four embodiments：

It should be noted that, the evaporator of refrigerator icing guard method executive agent that example below is previously mentioned all is this The evaporator of refrigerator icing protection device that bright embodiment is provided.

Embodiment one：With reference to shown in Fig. 4, the embodiment of the present invention one provides a kind of evaporator of refrigerator icing guard method, bag Include：

401st, judge whether compressor Cumulative Elapsed Time is pre- more than or equal to second after last evaporimeter defrost operation If time span.

If compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period after last evaporimeter defrost operation, Perform 402；If compressor Cumulative Elapsed Time is less than the second predetermined time period after last evaporimeter defrost operation, repeat to enter Row cycle criterion, continues executing with 401.

402nd, judge whether refrigerator is in during refrigerating operaton.

If refrigerator is during refrigerating operaton, 404 are performed；If refrigerator is not during refrigerating operaton, 403 are performed.

403rd, judge whether refrigerator receives refrigeration and require.

Refrigeration requirement herein can be being detected when the temperature inside the box is increased to certain threshold value to itself control for refrigerator The refrigeration instruction that the part-structure of refrigerating operaton sends can also be that user is sent out by the button or touch-screen triggering on refrigerator The refrigeration instruction sent.

If refrigerator receives refrigeration and requires, 406 are performed；If refrigerator does not receive refrigeration and requires, 401 are performed；Specifically, exist Practical solution implement in, can judge refrigerator do not receive when refrigeration is required perform 401 and 402 in any one step, Execution 403 itself can be circulated, i.e., any one step cycle from before 403 is possible, the step that certainly circulation is performed Rapid fewer consumed resource is also fewer, also more time-consuming.

404th, judge whether refrigeration for refrigerator run time reaches the first predetermined time period.

If refrigeration for refrigerator run time reaches the first predetermined time period, 405 are performed；If refrigeration for refrigerator run time does not reach To the first predetermined time period, 401 are performed；Specifically, in practical solution enforcement, can be when judging that refrigeration for refrigerator runs Between not up to the first predetermined time period when perform 401 and 402 in any one step, it is also possible to circulation perform 404 itself.

405th, obtain second the temperature inside the box when refrigeration for refrigerator runs the first predetermined time period and calculate first case interior temperature The difference of degree and second the temperature inside the box runs the maximum temperature difference in the first predetermined time period as refrigeration for refrigerator.

Specifically, first the temperature inside the box that acquisition refrigerating operaton herein starts is that each refrigeration for refrigerator operation all can go to obtain Take.

408 are performed after the step.

406th, judge whether refrigerator now can freeze.

Specifically, it is exactly not allow that some can affect the operation of refrigerator service life to be related to part in refrigerator, for example, press Contracting machine has just stopped can not task again not above 5 minutes.So need to judge whether refrigerator now can in one herein To carry out refrigeration operational state.

If refrigerator now can freeze, 407 are performed；If refrigerator now cannot freeze, 401 are performed；Specifically, in reality During scheme is implemented, 401,402 and 403 any one steps can be performed when judging that refrigerator now cannot freeze, it is also possible to Circulation performs 406 in itself.

407th, refrigerator brings into operation refrigeration, and obtains first the temperature inside the box when refrigeration for refrigerator operation starts, and first presets Time initialization timing starts, mark initialization of opening the door.

Specifically, herein described " the initialization timing of the first Preset Time starts " refers to the now embodiment of the present invention and carries For evaporator of refrigerator icing protection device present in the time set start recording refrigerating operaton time, when time set record When the refrigerating operaton time reaches the first predetermined time period, the processing meanss that can be triggered in evaporator of refrigerator icing protection device are entered The subsequent judgement step of row；Herein described " mark initialization of opening the door ", wherein " open the door mark " is referred in refrigerator quilt itself When door opening action occurs in user operation, refrigerator itself can produce a mark and carry out after record convenience for clamshell doors action 408 judgement, initialization refers to the enabling mark of the acquisition last cooling cycle and removes, and prepares to record mark of going out again Will.

401 are performed after this step；Specifically, in practical solution enforcement, 401 and 402 can be performed after 407 steps Anticipate a step, it is also possible to perform 404.

408th, judge run in the first predetermined time period whether have door opening action in refrigeration for refrigerator.

Specifically, if refrigeration for refrigerator is run when having door opening action in the first predetermined time period, the temperature for now obtaining is shown Degrees of data is possible to be affected by the temperature change that door opening action causes, so can not obtain using in this cooling cycle Temperature data, so perform 401 understanding with reference to circulation until next cooling cycle obtains just right again after temperature data 408 steps are performed；If refrigeration for refrigerator is run when not having door opening action in the first predetermined time period, 409 are performed.

409th, when refrigeration for refrigerator runs does not have door opening action in the first predetermined time period, judge whether maximum temperature difference is big In or equal to temperature difference threshold.

Specifically, when maximum temperature difference is less than temperature difference threshold, show that refrigeration for refrigerator cooling-down effect is not obvious, refrigeration is abnormal, Can be determined that and frozen for now evaporimeter.

If maximum temperature difference is less than temperature difference threshold, 410 are performed；If maximum temperature difference is more than or equal to temperature difference threshold, 401 are performed.

410th, determine that evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode.

After this step, continue cycling through, perform 401.

The evaporator of refrigerator icing guard method that above-described embodiment one is provided, first determines whether last evaporimeter defrost operation Afterwards whether compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period, only runs in upper once evaporimeter defrost Afterwards compressor Cumulative Elapsed Time can just carry out follow-up method flow more than or equal to the basis of the second predetermined time period； Refrigerator is then determined again now whether in refrigerating operaton, because freeze in evaporator of refrigerator provided in an embodiment of the present invention protecting The maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation is obtained in method on condition that refrigerator is in refrigerating operaton；When Determine to be evaporated device icing judgement and acquisition refrigeration for refrigerator operation first can be carried out after the completion of judgement above and preset During maximum temperature difference in time span, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained.Then judge Run in the first predetermined time period whether have door opening action in refrigeration for refrigerator；When refrigeration for refrigerator runs the first predetermined time period When inside not having door opening action, whether maximum temperature difference is judged more than or equal to temperature difference threshold, when maximum temperature difference is less than temperature difference threshold, Determine that evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode；When refrigeration for refrigerator runs the first predetermined time period When inside having door opening action, refrigeration for refrigerator the first Preset Time of operation is reacquired in next cooling cycle in current refrigeration cycle long Judged accordingly again after maximum temperature difference in degree.Above-described embodiment one provide evaporator of refrigerator icing guard method because Judged so as to determine refrigerator whether evaporimeter freezes according to the change of refrigerator the temperature inside the box after collection refrigerator the temperature inside the box Device defrost operational mode whether is evaporated, the accuracy that evaporator of refrigerator defrost operation judges is improve.In addition, further , because then can be from next cooling cycle in current refrigeration cycle if there is door opening action excessively during maximum temperature difference is obtained Reacquire carries out again judging accordingly only to have selected after the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period The maximum temperature difference that the refrigeration for refrigerator cycle without door opening action obtains is used for the judgement whether evaporimeter freezes, so avoiding out The temperature that door behavior causes raises the interference for judging that freezes to evaporimeter in evaporator of refrigerator guard method, further improves The accuracy of evaporator of refrigerator defrost operation.

Embodiment two：With reference to shown in Fig. 5, the embodiment of the present invention two provides a kind of evaporator of refrigerator icing guard method, bag Include：

501st, judge whether compressor Cumulative Elapsed Time is pre- more than or equal to second after last evaporimeter defrost operation If time span.

If compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period after last evaporimeter defrost operation, Perform 502；If compressor Cumulative Elapsed Time is less than the second predetermined time period after last evaporimeter defrost operation, perform 501。

502nd, judge whether refrigerator is in during refrigerating operaton.

If refrigerator is during refrigerating operaton, 503 are performed；If refrigerator is not during refrigerating operaton, 504 are performed.

503rd, judge whether refrigerator has door opening action.

If there is door opening action, 501 are performed；If without door opening action, performing 507；Specifically, in practical solution enforcement, Can judge that refrigerator is 501 or 502 any one steps of execution when having door opening action, it is also possible to which circulation performs 503 in itself.

504th, judge whether refrigerator receives refrigeration and require.

If refrigerator receives refrigeration and requires, 505 are performed；If refrigerator does not receive refrigeration and requires, 501 are performed；Specifically, exist Practical solution implement in, can judge refrigerator do not receive when refrigeration is required perform 501 and 502 in any one step, Execution 504 itself can be circulated.

505th, judge whether refrigerator now can freeze.

If refrigerator now can freeze, 506 are performed；If refrigerator now cannot freeze, 501 are performed；Specifically, in reality During scheme is implemented, any one step in can performing 501,502 and 504 when judging that refrigerator now cannot freeze also may be used 505 are performed to circulate in itself.

506th, refrigerator proceeds by refrigeration, and obtains first the temperature inside the box that refrigeration for refrigerator runs start time, and first is pre- If time initialization timing starts.

501 are performed after this step；Specifically, in practical solution enforcement, can perform in 501 and 502 after 506 steps Any one step, it is also possible to perform 503.

507th, action of whether closing the door in refrigeration for refrigerator running is judged.

If closing the door action, 509 are performed；If not closing the door action, 508 are performed.

508th, judge whether reach the first predetermined time period in refrigeration for refrigerator run time.

If refrigeration for refrigerator run time reaches the first predetermined time period, 510 are performed；If refrigeration for refrigerator run time does not have The first predetermined time period is reached, 501 are performed；Specifically, in practical solution enforcement, can run refrigeration for refrigerator is judged Any one step in execution 501 and 502 when time does not reach the first predetermined time period.

509th, in door close moment, current the temperature inside the box is obtained as first the temperature inside the box, at the beginning of the first Preset Time timing Beginningization, time in.

501 are performed after the step；Specifically, in practical solution enforcement, 501,502 and can be performed after 509 steps Any one step in 503, it is also possible to perform 508.

Specifically, 509 steps are will to close the door the moment as refrigeration for refrigerator operation start time and then reacquire ice Maximum temperature difference in the predetermined time period of case refrigerating operaton first；In addition, opening door close moment as refrigeration for refrigerator operation Moment beginning is reacquired during the maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation performs 509 if worked as Front cooling cycle terminates, then no longer do follow-up judgement, but the next cooling cycle in the current refrigeration cycle restarts to obtain Refrigeration for refrigerator runs and accordingly judged after the maximum temperature difference in the first predetermined time period.

510th, obtain second the temperature inside the box when refrigeration for refrigerator runs the first predetermined time period and calculate first case interior temperature The difference of degree and second the temperature inside the box runs the maximum temperature difference in the first predetermined time period as refrigeration for refrigerator.

511 are performed after this step.

511st, judge whether the maximum temperature difference that the refrigeration for refrigerator for obtaining is run in the first predetermined time period is more than or equal to Temperature difference threshold.

If the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is more than or equal to temperature difference threshold, 501 are performed； If the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is less than temperature difference threshold, 512 are performed.

512nd, determine that evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode.

501 are performed after this step.

The evaporator of refrigerator icing guard method that above-described embodiment two is provided, first determines whether last evaporimeter defrost operation Afterwards whether compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period, only runs in upper once evaporimeter defrost Afterwards compressor Cumulative Elapsed Time can just carry out follow-up method flow more than or equal to the basis of the second predetermined time period； Refrigerator is then determined again now whether in refrigerating operaton, because freeze in evaporator of refrigerator provided in an embodiment of the present invention protecting The maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation is obtained in method on condition that refrigerator is in refrigerating operaton；When Determine to be evaporated device icing judgement and acquisition refrigeration for refrigerator operation first can be carried out after the completion of judgement above and preset During maximum temperature difference in time span, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained.Then judge Run in the first predetermined time period whether have door opening action in refrigeration for refrigerator；When refrigeration for refrigerator runs the first predetermined time period When inside not having door opening action, whether maximum temperature difference is judged more than or equal to temperature difference threshold, when maximum temperature difference is less than temperature difference threshold, Determine that evaporimeter freezes, into evaporimeter defrost operational mode；There is enabling when refrigeration for refrigerator is run in the first predetermined time period During action, stop from the moment that door opening action occurs to the maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation Obtain；When the door closes, refrigeration for refrigerator operation first is reacquired using door close moment as refrigeration for refrigerator operation start time Judged accordingly again after maximum temperature difference in predetermined time period.The evaporator of refrigerator that above-described embodiment two is provided freezes and protects Maintaining method because collection refrigerator the temperature inside the box after according to refrigerator the temperature inside the box change whether evaporimeter is frozen judged from And determine whether refrigerator is evaporated device defrost operational mode, improve the accuracy that evaporator of refrigerator defrost operation judges.Enter One step, because then can postpone at the moment of action appearance of closing the door if there is door opening action excessively during maximum temperature difference is obtained The time of one section of first predetermined time period, and start time for running as refrigeration for refrigerator at the moment that will close the door and then obtain again Take and judged accordingly again after the maximum temperature difference that the refrigeration for refrigerator from closing the door constantly is run in the first predetermined time period, so Not only avoiding the impact that the temperature that door opening action causes raises the maximum temperature difference to obtaining from also improving operational efficiency need not wait until Next cooling cycle carries out again data acquisition and judgement, further improves the accuracy of evaporator of refrigerator defrost operation.

Embodiment three：With reference to shown in Fig. 6, the embodiment of the present invention three provides a kind of evaporator of refrigerator icing guard method, bag Include：

601st, judge whether compressor Cumulative Elapsed Time is pre- more than or equal to second after last evaporimeter defrost operation If time span.

If compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period after last evaporimeter defrost operation, Perform 602；If compressor Cumulative Elapsed Time is less than the second predetermined time period after last evaporimeter defrost operation, perform 601。

602nd, judge whether refrigerator is in during refrigerating operaton.

If refrigerator is during refrigerating operaton, 603 are performed；If refrigerator is not during refrigerating operaton, 604 are performed.

603rd, a temperature inside the box is obtained every the 3rd predetermined time period in refrigeration for refrigerator running.

607 are performed after the step.

Specifically, then the temperature that the step of uses simply is run in the first predetermined time period in refrigeration for refrigerator and is got Temperature, in not every refrigerating operaton whole process obtain temperature.

604th, judge whether refrigerator receives refrigeration and require.

If refrigerator receives refrigeration and requires, 605 are performed；If refrigerator does not receive refrigeration and requires, 601 are performed；Specifically, exist Practical solution implement in, can judge refrigerator do not receive when refrigeration is required perform 601 and 602 in any one step, Execution 604 itself can be circulated.

605th, judge whether refrigerator now can freeze.

If refrigerator now can freeze, 606 are performed；If refrigerator now cannot freeze, 601 are performed；Specifically, in reality During scheme is implemented, any one step in can performing 601,602 and 604 when judging that refrigerator now cannot freeze also may be used 605 are performed to circulate in itself.

606th, refrigerator proceeds by refrigeration, and obtains the temperature inside the box when refrigeration for refrigerator operation starts, the first Preset Time Initialization timing starts, mark initialization of opening the door.

601 are performed after the step；Specifically, in practical solution enforcement, can perform in 601 and 602 after 606 steps Any one step, it is also possible to perform 603.

607th, whether refrigeration for refrigerator run time reaches the first predetermined time period.

If refrigeration for refrigerator run time reaches the first predetermined time period, 608 are performed；If refrigeration for refrigerator run time does not have The first predetermined time period is reached, 601 are performed；Specifically, in practical solution enforcement, can run refrigeration for refrigerator is judged Any one step in execution 501 and 502 when time does not reach the first predetermined time period.

608th, the difference for calculating the highest temperature in all the temperature inside the box for getting and lowest temperature is run as refrigeration for refrigerator Maximum temperature difference in first predetermined time period.

Specifically, the temperature inside the box that acquisition refrigerating operaton herein starts is that each refrigeration for refrigerator operation all can go to obtain.

609 are performed after the step.

609th, judge run in the first predetermined time period whether have door opening action in refrigeration for refrigerator.

If refrigeration for refrigerator is run when not having door opening action in the first predetermined time period, 610 are performed；If refrigeration for refrigerator runs When having door opening action in the first predetermined time period, 601 are performed.

Specifically, the current refrigeration for refrigerator cycle do not judging whether evaporimeter freezes, freeze week when next time Phase restarts to judge flow process, it is to avoid impact of the door opening action to deterministic process in this this deterministic process.

610th, when refrigeration for refrigerator runs does not have door opening action in the first predetermined time period, lowest temperature time of occurrence is judged Whether earlier than the highest temperature.

If lowest temperature time of occurrence is earlier than the highest temperature, 611 are performed；If lowest temperature time of occurrence is later than the highest temperature, perform 612。

Specifically, if this judges that step is primarily due in refrigeration for refrigerator is run in the first predetermined time period There are icing conditions in way evaporimeter, causes then the temperature inside the box to raise or even the temperature difference can be reached and cross significantly very much temperature difference threshold, this Shi Ruguo only relies solely on the magnitude relationship of maximum temperature difference and temperature difference threshold and whether freezes not accurate enough judging evaporimeter, so Whether lowest temperature time of occurrence is also judged earlier than the highest temperature, midway is represented if lowest temperature time of occurrence is earlier than the highest temperature to be had Evaporimeter ice condition may have occurred causes temperature to raise, and can use if lowest temperature time of occurrence is later than the highest temperature The temperature difference is compared with temperature difference threshold and judges whether evaporimeter freezes i.e. 612 steps.

612nd, judge that whether refrigeration for refrigerator runs the maximum temperature difference in the first predetermined time period more than or equal to temperature difference threshold Value.

If the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is more than or equal to temperature difference threshold, refrigerator is represented Refrigeration is normal, performs 601；If the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is less than temperature difference threshold, perform 611。

611st, determine that evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode.

601 are performed after the step.

The evaporator of refrigerator icing guard method that above-described embodiment three is provided, first determines whether last evaporimeter defrost operation Afterwards whether compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period, only runs in upper once evaporimeter defrost Afterwards compressor Cumulative Elapsed Time can just carry out follow-up method flow more than or equal to the basis of the second predetermined time period； Refrigerator is then determined again now whether in refrigerating operaton, because freeze in evaporator of refrigerator provided in an embodiment of the present invention protecting The maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation is obtained in method on condition that refrigerator is in refrigerating operaton；When Determine to be evaporated device icing judgement and acquisition refrigeration for refrigerator operation first can be carried out after the completion of judgement above and preset During maximum temperature difference in time span, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained, due to implementing To run the methods of the maximum temperature difference in the first predetermined time periods be in refrigeration for refrigerator operation the to three refrigeration for refrigerator that obtain for providing A temperature inside the box can be obtained every the 3rd predetermined time period during one predetermined time period, then calculate all acquisitions The temperature inside the box in maximum and minimum of a value obtain difference as maximum temperature difference, so the final maximum temperature difference for obtaining can be more accurate. Judge run in the first predetermined time period whether have door opening action in refrigeration for refrigerator after maximum temperature difference is obtained；When it is determined that ice When there is no door opening action in the predetermined time period of case refrigerating operaton first, judge maximum temperature difference whether more than or equal to temperature difference threshold Value, when maximum temperature difference is less than temperature difference threshold, determines that evaporimeter freezes, into evaporimeter defrost operational mode.In addition, in order to avoid Run in refrigeration for refrigerator and occur in the first predetermined time period evaporimeter icing conditions to the overall impact for judging, it is determined that refrigerator Without also needing to first judge that lowest temperature goes out in the temperature for getting after door opening action in the predetermined time period of refrigerating operaton first Whether earlier than the highest temperature between current, the Preset Time of refrigerating operaton first is represented if lowest temperature time of occurrence is earlier than the highest temperature long The midway of degree is possible to evaporimeter ice condition occurred to cause temperature to raise, and now controls refrigerator and enters evaporimeter defrost fortune Row mode；And sentencing for maximum temperature difference and temperature difference threshold magnitude relationship can be carried out if lowest temperature time of occurrence is later than the highest temperature It is disconnected.When refrigeration for refrigerator runs has door opening action in the first predetermined time period, in next cooling cycle in current refrigeration cycle Reacquire and judged accordingly again after the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period.Above-described embodiment The three evaporator of refrigerator icing guard methods for providing according to refrigerator the temperature inside the box after collection refrigerator the temperature inside the box because change right Whether evaporimeter freezes is judged, so as to determine whether refrigerator is evaporated device defrost operational mode, to improve evaporator of refrigerator The accuracy that defrost operation judges.Further, because then can if there is door opening action excessively during maximum temperature difference is obtained The maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation is reacquired from next cooling cycle in current refrigeration cycle Afterwards, then carry out corresponding judging only to have selected maximum temperature difference that the refrigeration for refrigerator cycle without door opening action obtains for evaporating The judgement whether device freezes, and the mode of acquisition maximum temperature difference is more accurate, so not only avoid what enabling behavior caused Temperature raises the interference for judging that freezes to evaporimeter in evaporator of refrigerator guard method, and improves subsequently sentence to a certain extent Disconnected accuracy rate, further improves the accuracy of evaporator of refrigerator defrost operation.

Example IV：With reference to shown in Fig. 7, the embodiment of the present invention four provides a kind of evaporator of refrigerator icing guard method, bag Include：

701st, judge whether compressor Cumulative Elapsed Time is pre- more than or equal to second after last evaporimeter defrost operation If time span.

If compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period after last evaporimeter defrost operation, Perform 702；If compressor Cumulative Elapsed Time is less than the second predetermined time period after last evaporimeter defrost operation, perform 701。

702nd, judge whether refrigerator is in during refrigerating operaton.

If refrigerator is during refrigerating operaton, 703 are performed；If refrigerator is not during refrigerating operaton, 704 are performed.

703rd, judge whether refrigerator has door opening action.

If there is door opening action, 701 are performed；If without door opening action, performing 707；Specifically, in practical solution enforcement, Can judge that refrigerator is 701 or 702 any one steps of execution when having door opening action, it is also possible to which circulation performs 703 in itself.

704th, judge whether refrigerator receives refrigeration and require.

If refrigerator receives refrigeration and requires, 705 are performed；If refrigerator does not receive refrigeration and requires, 701 are performed；Specifically, exist Practical solution implement in, can judge refrigerator do not receive when refrigeration is required perform 701 and 702 in any one step, Execution 704 itself can be circulated.

705th, judge whether refrigerator now can freeze.

If refrigerator now can freeze, 706 are performed；If refrigerator now cannot freeze, 701 are performed；Specifically, in reality During scheme is implemented, any one step in can performing 701,702 and 704 when judging that refrigerator now cannot freeze also may be used 705 are performed to circulate in itself.

706th, refrigerator proceeds by refrigeration, and obtains the temperature inside the box when refrigeration for refrigerator operation starts, the first Preset Time Initialization timing starts.

701 are performed after the step；Specifically, in practical solution enforcement, can perform in 701 and 702 after 506 steps Any one step, it is also possible to perform 703.

707th, action of whether closing the door in refrigeration for refrigerator running is judged.

If closing the door action, 708 are performed；If not closing the door action, 709 are performed.

708th, in door close moment, current the temperature inside the box is obtained as first the temperature inside the box, at the beginning of the first Preset Time timing Beginningization, time in.

The concrete executive mode of the step 708 is repeated no more with reference to step 509, and 701 are performed after the step 708；Specifically, In practical solution is implemented, any one step during 701,702 and 703 can be performed after 708 steps, it is also possible to perform 709.

709th, a temperature inside the box is obtained every the 3rd predetermined time period in refrigerator running.

710 are performed after the step.

710th, judge whether reach the first predetermined time period in refrigeration for refrigerator run time.

If refrigeration for refrigerator run time reaches the first predetermined time period, 711 are performed；If refrigeration for refrigerator run time does not have The first predetermined time period is reached, 701 are performed；Specifically, in practical solution enforcement, can run refrigeration for refrigerator is judged Any one step in execution 701 and 702 when time does not reach the first predetermined time period.

The difference conduct of highest the temperature inside the box and minimum the temperature inside the box the 711, in all the temperature inside the box that calculating gets Refrigeration for refrigerator runs the maximum temperature difference in the first predetermined time period.

712 are performed after the step.

712nd, judge that whether lowest temperature time of occurrence is earlier than the highest temperature in all temperature for getting.

If lowest temperature time of occurrence is earlier than the highest temperature, 714 are performed；If lowest temperature time of occurrence is later than the highest temperature, perform 713。

Specifically, occur the reason for this judges step with reference to described in step 610, here is omitted.

713rd, judge maximum temperature difference whether more than or equal to temperature difference threshold.

If maximum temperature difference is less than temperature difference threshold, 714 are performed；If maximum temperature difference is more than or equal to temperature difference threshold, 701 are performed.

714th, determine that evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode.

701 are performed after this step.

The evaporator of refrigerator icing guard method that above-described embodiment four is provided, first determines whether last evaporimeter defrost operation Afterwards whether compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period, only runs in upper once evaporimeter defrost Afterwards compressor Cumulative Elapsed Time can just carry out follow-up method flow more than or equal to the basis of the second predetermined time period； Refrigerator is then determined again now whether in refrigerating operaton, because freeze in evaporator of refrigerator provided in an embodiment of the present invention protecting The maximum temperature difference in refrigeration for refrigerator the first predetermined time period of operation is obtained in method on condition that refrigerator is in refrigerating operaton.When Determine to be evaporated device icing judgement and acquisition refrigeration for refrigerator operation first can be carried out after the completion of judgement above and preset During maximum temperature difference in time span, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained.Due to implementing To run the methods of the maximum temperature difference in the first predetermined time periods be in refrigeration for refrigerator operation the to four refrigeration for refrigerator that obtain for providing A temperature inside the box is obtained every the 3rd predetermined time period during one predetermined time period, all acquisitions are then calculated Maximum and minimum of a value obtain difference as maximum temperature difference in the temperature inside the box, so the final maximum temperature difference for obtaining can be more accurate. Judge run in the first predetermined time period whether have door opening action in refrigeration for refrigerator after this；When refrigeration for refrigerator operation it is first pre- If do not have door opening action in time span, whether maximum temperature difference is judged more than or equal to temperature difference threshold, maximum temperature difference is less than temperature During difference limen value, determine that evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode.In addition, in order to avoid in refrigerator system Occur evaporimeter icing conditions in the predetermined time period of cold operation first to the overall impact for judging, it is determined that refrigeration for refrigerator operation Without also needing to first judge that lowest temperature time of occurrence is in the temperature for getting after door opening action in first predetermined time period It is no earlier than the highest temperature, the midway of the predetermined time period of refrigerating operaton first is represented if lowest temperature time of occurrence is earlier than the highest temperature It is possible to evaporimeter ice condition occurred to cause temperature to raise, now controls refrigerator and enter evaporimeter defrost operational mode； And the judgement of maximum temperature difference and temperature difference threshold magnitude relationship can be carried out if lowest temperature time of occurrence is later than the highest temperature.Work as ice When having door opening action in the predetermined time period of case refrigerating operaton first, stop to refrigeration for refrigerator from the moment that door opening action occurs Run the acquisition of the maximum temperature difference in the first predetermined time period；When the door closes, transport door close moment as refrigeration for refrigerator Row start time reacquires and is judged accordingly again after the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period. The evaporator of refrigerator icing guard method that above-described embodiment four is provided is because according in refrigerator case after collection refrigerator the temperature inside the box Whether temperature change freezes to evaporimeter is judged, so as to determine whether refrigerator is evaporated device defrost operational mode, to improve The accuracy that evaporator of refrigerator defrost operation judges.Further, because opening if there is crossing during maximum temperature difference is obtained Door action then can postpone time of one section of first predetermined time period at the moment of action appearance of closing the door, and will close the door and make constantly Start time and then reacquisition for refrigeration for refrigerator operation refrigeration for refrigerator from closing the door constantly runs the first predetermined time period Judged accordingly again after interior maximum temperature difference, so not only avoid the temperature that door opening action causes from raising the maximum to obtaining The impact of the temperature difference also improves operational efficiency and need not again carry out data acquisition and judgement when next cooling cycle, while obtaining It is more accurate in the mode of maximum temperature difference, so not only avoid enabling behavior to steaming in follow-up evaporator of refrigerator guard method The interference that device icing judges is sent out, and improves the follow-up accuracy rate for judging to a certain extent, further improve refrigerator The accuracy of evaporimeter defrost operation.

It should be noted that in aforementioned four embodiment, the once compressor accumulation after evaporimeter defrost operation in the judgement When whether run time is more than or equal to the second predetermined time period, occur if there is in this second predetermined time period Refrigerator starts refrigerating operaton and in refrigeration for refrigerator operation at the end of the second Preset Time and during unclosed situation, this refrigeration week For the acquisition of the temperature inside the box when refrigeration for refrigerator runs to be started can be in phase：First, the cooling cycle refrigeration for refrigerator operation is obtained The temperature inside the box during beginning is used, and does not consider that compressor Cumulative Elapsed Time is more than or equal to after last evaporimeter defrost operation Second predetermined time period；2nd, compressor Cumulative Elapsed Time after last evaporimeter defrost operation is obtained default equal to second The temperature inside the box when the temperature inside the box during time span starts as the cooling cycle refrigeration for refrigerator operation is subsequently used；3rd, etc. Treat that the cooling cycle terminates, temperature when temperature when next time refrigeration starts starts as refrigeration.

In order to implement to the evaporator of refrigerator icing guard method mentioned in the scheme of above-mentioned all embodiments offers, The present invention also provides a kind of refrigerator, including a kind of refrigerator icing protection device；With reference to shown in Fig. 8, the device includes：

Temperature detecting module 1, runs in the first predetermined time period for after refrigeration for refrigerator starts, obtaining refrigeration for refrigerator Maximum temperature difference；

Judge module 2, for judging run in the first predetermined time period whether have door opening action in refrigeration for refrigerator；

Judge module 2 is additionally operable to determine when not having door opening action in refrigeration for refrigerator the first predetermined time period of operation, judges Whether maximum temperature difference is more than or equal to temperature difference threshold；When maximum temperature difference is less than temperature difference threshold, determine that evaporimeter freezes；

Control module 3, for when judge module determines that evaporimeter freezes, control refrigerator to enter evaporimeter defrost and runs mould Formula.

In addition, when the determination refrigeration for refrigerator of judge module 2 runs and has door opening action in the first predetermined time period, controlling mould The control temperature detecting module 1 of block 3 reacquires the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period.

Judge module 2 is additionally operable to be obtained in refrigeration for refrigerator the first predetermined time period of operation most in temperature detecting module 1 Judge whether compressor Cumulative Elapsed Time is default more than or equal to second after last evaporimeter defrost operation before the big temperature difference Time span；Compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period after last evaporimeter defrost runs When, the control temperature detecting module 1 of control module 3 obtains the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period.

Optionally, temperature detecting module 1 is specifically for obtaining first the temperature inside the box and ice when refrigeration for refrigerator operation starts Second the temperature inside the box during case the first predetermined time period of refrigerating operaton；Then first the temperature inside the box and second the temperature inside the box are calculated Difference as refrigeration for refrigerator run the first predetermined time period in maximum temperature difference.

Optionally, temperature detecting module 1 is specifically for obtaining the temperature inside the box when refrigeration for refrigerator operation starts；In refrigerator A temperature inside the box is obtained in the predetermined time period of refrigerating operaton first every the 3rd predetermined time period；Then calculate and get All the temperature inside the box in highest the temperature inside the box and minimum the temperature inside the box difference as refrigeration for refrigerator operation first it is default when Between maximum temperature difference in length.

Optionally, control module 3 is used for, and has in refrigeration for refrigerator the first predetermined time period of operation when judge module 2 determines During door opening action, refrigeration for refrigerator when the control temperature detecting module 1 of control module 3 obtains next cooling cycle in current refrigeration cycle Run the maximum temperature difference in the first predetermined time period.

Optionally, control module 3 is used for, and has in refrigeration for refrigerator the first predetermined time period of operation when judge module 2 determines During door opening action, temperature detecting module 1 is controlled from the moment that door opening action occurs and stops presetting refrigeration for refrigerator operation first The acquisition of the maximum temperature difference in time span；When judge module 2 determines closing motion, the control temperature inspection of control module 3 Survey module 1 door close moment is long as refrigeration for refrigerator operation start time reacquisition refrigeration for refrigerator the first Preset Time of operation Maximum temperature difference in degree.

In addition, the embodiment of the present invention also provides a kind of timing module, essential record is used to freeze evaporator of refrigerator and protects Each preset time period used, such as the first predetermined time period are needed when device implements evaporator of refrigerator icing guard method Deng.Its concrete function can also be incorporated into operational blocks which partition system in evaporator of refrigerator icing protection device provided in an embodiment of the present invention On, it is not particularly limited.

The embodiment of the present invention also provides a kind of computer program, and the computer program can be loaded directly into refrigerator In the memory for itself carrying or the storage part of processor, and contain software code, the computer program is via computer Above-mentioned evaporator of refrigerator icing guard method can be realized after being loaded into and performing.

It should be noted that the evaporator of refrigerator icing protection device of the embodiment of the present invention is implementing evaporator of refrigerator icing The temperature got during guard method or other data are all stored in a memory module, such as random access memory Device (Random Access Memory, RAM), flash memory, read-only storage (Read Only Memory, ROM), erasable compile Journey read-only storage (Erasable Programmable ROM, EPROM), EEPROM (Electrically EPROM, EEPROM), register, hard disk, portable hard drive, read-only optical disc (CD-ROM) or this area are ripe The storage medium of any other form known.In embodiment provided herein, it should be understood that disclosed method, Can realize by another way.For example, system embodiment described above is only schematic, for example, the mould The division of block, only a kind of division of logic function can have an other dividing mode when actually realizing, such as multiple modules or Component can with reference to or be desirably integrated into another device, or some features can be ignored, or not perform.All modules can be with It is or may not be physically separate, can is as the part that module shows or may not be physical location, A place is may be located at, or can also be distributed on diverse location.Part therein can according to the actual needs be selected Or whole modules are realizing the purpose of this embodiment scheme.

More than, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any to be familiar with Those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should cover Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.

Claims

1. a kind of evaporator of refrigerator icing guard method, it is characterised in that include：

After refrigeration for refrigerator starts, the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is obtained；

Judge run in the first predetermined time period whether have door opening action in the refrigeration for refrigerator；

When the refrigeration for refrigerator runs does not have door opening action in the first predetermined time period, judge whether the maximum temperature difference is big In or equal to temperature difference threshold；If it is not, determining that the evaporimeter freezes, control refrigerator enters evaporimeter defrost operational mode.

2. evaporator of refrigerator icing guard method according to claim 1, it is characterised in that also include：

When the refrigeration for refrigerator runs has door opening action in the first predetermined time period, refrigeration for refrigerator operation first is reacquired Maximum temperature difference in predetermined time period.

3. evaporator of refrigerator icing guard method according to claim 1, it is characterised in that in the acquisition refrigeration for refrigerator Run and also include before the maximum temperature difference in the first predetermined time period：

Judge whether compressor Cumulative Elapsed Time is long more than or equal to the second Preset Time after last evaporimeter defrost operation Degree；

When compressor Cumulative Elapsed Time is more than or equal to the second predetermined time period after last evaporimeter defrost operation, obtain Take the maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period.

4. evaporator of refrigerator icing guard method according to claim 1, it is characterised in that the acquisition refrigeration for refrigerator fortune Maximum temperature difference in the predetermined time period of row first, including：

Obtain first the temperature inside the box when refrigeration for refrigerator operation starts；

Obtain second the temperature inside the box during refrigeration for refrigerator the first predetermined time period of operation；

The difference for calculating described first the temperature inside the box and described second the temperature inside the box is preset as refrigeration for refrigerator operation first Maximum temperature difference in time span.

5. evaporator of refrigerator icing guard method according to claim 1, it is characterised in that the acquisition refrigeration for refrigerator fortune Maximum temperature difference in the predetermined time period of row first, including：

Obtain the temperature inside the box when refrigeration for refrigerator operation starts；

Refrigeration for refrigerator runs in the first predetermined time period and obtains a temperature inside the box every the 3rd predetermined time period；

The difference of highest the temperature inside the box and minimum the temperature inside the box in all the temperature inside the box that calculating gets is used as the refrigerator Maximum temperature difference in the predetermined time period of refrigerating operaton first.

6. evaporator of refrigerator icing guard method according to claim 2, it is characterised in that described when the refrigeration for refrigerator Run when having door opening action in the first predetermined time period, reacquire refrigeration for refrigerator and run in the first predetermined time period most The big temperature difference, including：

When the refrigeration for refrigerator runs has door opening action in the first predetermined time period, next refrigeration week in current refrigeration cycle The maximum temperature difference that refrigeration for refrigerator is run in the first predetermined time period is reacquired during the phase.

7. evaporator of refrigerator icing guard method according to claim 2, it is characterised in that described when the refrigeration for refrigerator Run when having door opening action in the first predetermined time period, reacquire refrigeration for refrigerator and run in the first predetermined time period most The big temperature difference, including：

When the refrigeration for refrigerator runs has door opening action in the first predetermined time period, from the moment that the door opening action occurs Act the acquisition for stopping that the maximum temperature difference in the first predetermined time period is run to refrigeration for refrigerator；

When the door closes, door close moment is reacquired into refrigeration for refrigerator operation first as refrigeration for refrigerator operation start time pre- If the maximum temperature difference in time span.

8. a kind of evaporator of refrigerator icing protection device, it is characterised in that include：

Temperature detecting module, runs in the first predetermined time period most for after refrigeration for refrigerator starts, obtaining refrigeration for refrigerator The big temperature difference；

Judge module, for judging run in the first predetermined time period whether have door opening action in the refrigeration for refrigerator；

The judge module is additionally operable to determine when not having door opening action in the first predetermined time period of the refrigeration for refrigerator operation, sentences Whether the maximum temperature difference that breaks is more than or equal to temperature difference threshold；If it is not, determining that the evaporimeter freezes；

Control module, for when the judge module determines that the evaporimeter freezes, control refrigerator to be transported into evaporimeter defrost Row mode.

9. a kind of refrigerator, it is characterised in that including the evaporator of refrigerator icing protection device described in claim 8.