CN106568295A - Control method for identification of defrosting temperature-sensing probe false failure and safety operation - Google Patents
Control method for identification of defrosting temperature-sensing probe false failure and safety operation Download PDFInfo
- Publication number
- CN106568295A CN106568295A CN201610907252.1A CN201610907252A CN106568295A CN 106568295 A CN106568295 A CN 106568295A CN 201610907252 A CN201610907252 A CN 201610907252A CN 106568295 A CN106568295 A CN 106568295A
- Authority
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- China
- Prior art keywords
- temperature
- defrost
- defrosting
- sensitive head
- flag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/006—Safety devices
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/10—Sensors measuring the temperature of the evaporator
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a control method for identification of defrosting temperature-sensing probe false failure and safety operation. The control method for the identification of the defrosting temperature-sensing probe false failure and the safety operation comprises the following concrete steps of through setting a defrosting temperature-sensing probe fault flag: FLAG_DFROST, judging a value obtained through sampling a defrosting temperature-sensing probe during a non-defrosting period; if the value exceeds a limit value, firstly setting a flag bit FLAG_DFROST to be 1 as a condition of entering fault defrosting, and then after carrying out fault defrosting for 10 minutes, re-sampling the defrosting temperature-sensing probe; if the value is within a normal range, entering normal defrosting, otherwise, exiting defrosting, and alarming. The control method for the identification of the defrosting temperature-sensing probe false failure and the safety operation provided by the invention can solve the problems of erroneous judgement of an electronic control system, more market feedbacks and repairs, and larger potential safety hazards caused by the reason that a common temperature probe cannot effectively distinguish the temperature variation easily at low temperature. According to the control method for the identification of the defrosting temperature-sensing probe false failure and the safety operation provided by the invention, after defrosting for 10 minutes, and after the temperature of an evaporator and the temperature at a defrosting probe rise again, the temperature at the defrosting probe is judged again, so that the problem of erroneous judgement of the system on the defrosting probe is effectively solved.
Description
Technical field
The present invention relates to refrigerator field, specifically a kind of controlling party for differentiating the false failure of defrost temperature-sensing probe and safe operation
Method.
Background technology
Refrigerator is to maintain a kind of refrigeration plant of constant low temperature, and one kind makes food or other articles keep constant low temperature
The product for civilian use of cold conditions, has compressor, ice machine to the cabinet that freezes or case in the casing of refrigerator；Refrigerator is exactly a kind of with system
The hutch of device for cooling.In refrigerator industry, wind cooling refrigerator is because with thermograde is little, be not required to artificial defrosting, being user using carrying
Very big convenience is supplied, has been greatly favored by consumers in countries such as America and Europe, Japan and Korea S..With internal people's growth in the living standard, closely
Nian Lai, wind cooling refrigerator are increasingly favored.
The dampness entered in case outside in refrigerator and case, can be taken on vaporizer by the circulated air in casing, and be condensed
Cheng Bing, As time goes on, the ice on vaporizer can be more and more, if not in time ice above is removed, influence whether
The refrigeration of refrigerator；If defrost not in time can a defrost produce substantial amounts of defrosting water, be likely to result in water and flow out water receiving
Ware has overflow in casing, so as to the floor of the user that gets wet causes customer complaint etc., present wind cooling refrigerator to adopt rustless steel, aluminum
The forms such as defrost heating tube, quartz ampoule defrost pipe are heated to the air channel of wind cooling refrigerator, in order to the ice in air channel, frost are removed dry
Only, typically to hold on an evaporator and set a defrosting sensor, by the temperature on detecting sensor（General 3-8 degree）, sentence
It is disconnected whether to terminate defrost, if defrost always, the temperature in air channel can be caused too high, the safety problem such as cause to catch fire.
During automatic defrosting, usually 3 DEG C -8 DEG C some temperature therebetween are reached detecting the temperature at defrost temperature-sensitive head
Value（It is concrete to want the position that root Ju temperature-sensing probe is placed to determine）, judge to have in vaporizer and air channel from this temperature value frost and
Whether ice is changed totally, several years ago, and international top-brand refrigerator manufacturer, internal class brand manufacturer wind cooling refrigerator occurred
Product, the problems such as defrost and defrosting control process be not proper to be caused refrigerator to catch fire, explode, so as to cause ratio to producer's brand
Larger reputation affects and very big economic loss.For frostless product, defrost temperature-sensing probe is critically important, if defrost heating tube
Heat always, refrigerator has the danger caught fire, need judge when to exit defrost, a side by defrost temperature-sensing probe
In the guard box body of face, the frost and ice of region of interest can be melted, and to ensure refrigeration performance, another side prevents defrost heating tube always
Heating causes performance not up to standard and has fire hazard.In order to ensure the safety of refrigerator product, generally individually will be to the effectiveness of probe
Detected, when its open circuit or short circuit is found, that is, its resistance is when overruning, and can report to the police immediately, reminds user malfunction
Report for repairment, but be all that people actively go whether the defrost temperature-sensing probe for checking refrigerator fails now, there is presently no can certainly
Dynamic to judge the whether normal method of defrost temperature-sensing probe, this just brings inconvenience for the use of people.
The content of the invention
It is an object of the invention to provide a kind of control method for differentiating the false failure of defrost temperature-sensing probe and safe operation, with
Propose in solving the problems, such as above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme：
A kind of control method for differentiating the false failure of defrost temperature-sensing probe and safe operation, comprises the following steps that：
Step one, whether the defrost temperature-sensitive head failure of malfunction indicates position to be provided for sign defrost temperature-sensitive head：FLAG_
DFROST；
Step 2, in time interrupt processing function, As time goes on, after the timing of intervalometer reaches setting value, master control
Device processed produces interruption, in interrupt processing function, through analog digital conversion, its value is carried out to the numerical value sampled after analysis
Judge, if it is judged that the resistance of temperature-sensitive head exceedes its upper limit value and lower limit value, then put defrost temperature-sensitive head Reflector FLAG_FROST=
1, if it is judged that the resistance of temperature-sensitive head is thereon, in the range of lower limit, then put defrost temperature-sensitive head Reflector FLAG_FROST=
0；
Step 3, in defrost interrupt processing function, first judges that FLAG_DFROST is 0 or 1：If FLAG_DFROST=0,
Normal defrost processing routine is entered then；If FLAG_DFROST=1, into failure defrost pattern；After defrost 10-15 minutes,
Data acquisition is carried out to defrost temperature-sensitive head again, after analog digital conversion, its value is entered to judge, if the now temperature of defrost temperature-sensitive head
In its normal scope, then in normal defrost processing routine；If it is determined that defrost temperature-sensitive head still fails, then exiting
Frost, puts defrost temperature-sensitive head fault bit, and alarm user reports for repairment.
As further scheme of the invention：Again defrost temperature-sensitive head is carried out data acquisition time be defrost after very
Clock.
Compared with prior art, the invention has the beneficial effects as follows：The present invention can solve medium-sized temperature probe because of work
The scope for making temperature is big, and in low temperature, its temperature resistance characteristic amplitude is smaller, it is difficult to effectively distinguish the change of temperature so as to make
Judge by accident into electric-control system, cause more market feedback, report for repairment and have larger potential safety hazard；The present invention is using in defrost ten
After minute, after the temperature recovery at evaporator temperature and defrost probe is arrived, again the temperature at defrost probe is judged,
So as to efficiently solve the misinterpretation that system is popped one's head in defrost；This method reliability is high, and safety is good, can effective reduction
The erroneous judgement of white temperature-sensing probe, reduces the complaint of maintenance cost and user, safeguards brand image.
Description of the drawings
Fig. 1 is the workflow diagram of the control method for differentiating the false failure of defrost temperature-sensing probe and safe operation.
Specific embodiment
The technical scheme of this patent is described in more detail with reference to specific embodiment.
Embodiment 1
A kind of control method for differentiating the false failure of defrost temperature-sensing probe and safe operation, comprises the following steps that：
Step one, whether the defrost temperature-sensitive head failure of malfunction indicates position to be provided for sign defrost temperature-sensitive head：FLAG_
DFROST；
Step 2, in time interrupt processing function, As time goes on, after the timing of intervalometer reaches setting value, master control
Device processed produces interruption, in interrupt processing function, through analog digital conversion, its value is carried out to the numerical value sampled after analysis
Judge, if it is judged that the resistance of temperature-sensitive head exceedes its upper limit value and lower limit value, then put defrost temperature-sensitive head Reflector FLAG_FROST=
1, if it is judged that the resistance of temperature-sensitive head is thereon, in the range of lower limit, then put defrost temperature-sensitive head Reflector FLAG_FROST=
0；
Step 3, in defrost interrupt processing function, first judges that FLAG_DFROST is 0 or 1：If FLAG_DFROST=0,
Normal defrost processing routine is entered then；If FLAG_DFROST=1, into failure defrost pattern；After defrost 15 minutes, again
Data acquisition is carried out to defrost temperature-sensitive head, after analog digital conversion, its value is entered to judge, if now the temperature of defrost temperature-sensitive head is at which
In normal scope, then in normal defrost processing routine；If it is determined that defrost temperature-sensitive head still fails, then defrost is exited, is put
Defrost temperature-sensitive head fault bit, and alarm user reports for repairment.
Embodiment 2
Comprise the following steps that：
Step one, whether the defrost temperature-sensitive head failure of malfunction indicates position to be provided for sign defrost temperature-sensitive head：FLAG_
DFROST；
Step 2, in time interrupt processing function, As time goes on, after the timing of intervalometer reaches setting value, master control
Device processed produces interruption, in interrupt processing function, through analog digital conversion, its value is carried out to the numerical value sampled after analysis
Judge, if it is judged that the resistance of temperature-sensitive head exceedes its upper limit value and lower limit value, then put defrost temperature-sensitive head Reflector FLAG_FROST=
1, if it is judged that the resistance of temperature-sensitive head is thereon, in the range of lower limit, then put defrost temperature-sensitive head Reflector FLAG_FROST=
0；
Step 3, in defrost interrupt processing function, first judges that FLAG_DFROST is 0 or 1：If FLAG_DFROST=0,
Normal defrost processing routine is entered then；If FLAG_DFROST=1, into failure defrost pattern；After defrost 10 minutes, again
Data acquisition is carried out to defrost temperature-sensitive head, after analog digital conversion, its value is entered to judge, if now the temperature of defrost temperature-sensitive head is at which
In normal scope, then in normal defrost processing routine；If it is determined that defrost temperature-sensitive head still fails, then defrost is exited, is put
Defrost temperature-sensitive head fault bit, and alarm user reports for repairment
The present invention operation principle be：During winter, because ambient temperature is than relatively low, if user family does not turn on the aircondition or heating installation,
The evaporating temperature of big wind cooling refrigerator can be very low, and because of flexible temperature-sensitive head, that is, critesistor, its sensitivity to temperature has one
Interval, if it exceeds this is interval, its resistance effectively cannot be produced to temperature and be changed.It is typically low when environment temperature is detected
Below -35 degree, just to temperature-insensitive, its resistance controller is detected as close to infinity defrost temperature-sensitive degree.Cause exists
Refrigerator normally runs therebetween, and defrost temperature-sensitive head is not involved in refrigerator operation control；During which acts predominantly on defrost, for sentencing
Whether the temperature broken around which is more than 3 DEG C to 8 DEG C（Depending on occurrence root Ju temperature-sensitive head placement location）, if it exceeds setting value,
Defrosting heater is disconnected then.Set about from the effect of defrost temperature-sensitive head, the present invention proposes a kind of to detect during normal refrigeration
When defrost temperature-sensitive head fails, or so 10-15 minutes, the method for being judged again, being of principle after starting during carrying out defrost
White heater heated 10-15 minutes, within the scope of at defrost temperature-sensitive head, temperature returns to temperature-sensitive head normal working temperature, such as
Fruit detects the open circuit of defrost temperature-sensitive head or short circuit again, then carry out corresponding troubleshooting immediately.
The present invention can solve medium-sized temperature probe because the scope of operating temperature is big, and in low temperature, its temperature resistance is special
Property amplitude it is smaller, it is difficult to effectively distinguish the change of temperature so as to cause electric-control system to judge by accident, cause more market feedback, report
Repair and have larger potential safety hazard；The present invention is using the temperature after defrost ten minutes, at evaporator temperature and defrost probe
After degree goes back up to, again the temperature at defrost probe is judged, so as to efficiently solve the mistake that system is popped one's head in defrost
Judge；This method reliability is high, and safety is good, can effectively reduce the erroneous judgement of defrost temperature-sensing probe, reduces maintenance cost and use
The complaint at family, safeguards brand image.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as and limit involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (2)
1. a kind of control method for differentiating the false failure of defrost temperature-sensing probe and safe operation, it is characterised in that comprise the following steps that：
Step one, whether the defrost temperature-sensitive head failure of malfunction indicates position to be provided for sign defrost temperature-sensitive head：FLAG_
DFROST；
Step 2, in time interrupt processing function, As time goes on, after the timing of intervalometer reaches setting value, master control
Device processed produces interruption, in interrupt processing function, through analog digital conversion, its value is carried out to the numerical value sampled after analysis
Judge, if it is judged that the resistance of temperature-sensitive head exceedes its upper limit value and lower limit value, then put defrost temperature-sensitive head Reflector FLAG_FROST=
1, if it is judged that the resistance of temperature-sensitive head is thereon, in the range of lower limit, then put defrost temperature-sensitive head Reflector FLAG_FROST=
0；
Step 3, in defrost interrupt processing function, first judges that FLAG_DFROST is 0 or 1：If FLAG_DFROST=0,
Normal defrost processing routine is entered then；If FLAG_DFROST=1, into failure defrost pattern；After defrost 10-15 minutes,
Data acquisition is carried out to defrost temperature-sensitive head again, after analog digital conversion, its value is entered to judge, if the now temperature of defrost temperature-sensitive head
In its normal scope, then in normal defrost processing routine；If it is determined that defrost temperature-sensitive head still fails, then exiting
Frost, puts defrost temperature-sensitive head fault bit, and alarm user reports for repairment.
2. the control method for differentiating the false failure of defrost temperature-sensing probe and safe operation according to claim 1, its feature exist
In the time for carrying out data acquisition again to defrost temperature-sensitive head is ten minutes after defrost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907252.1A CN106568295A (en) | 2016-10-19 | 2016-10-19 | Control method for identification of defrosting temperature-sensing probe false failure and safety operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907252.1A CN106568295A (en) | 2016-10-19 | 2016-10-19 | Control method for identification of defrosting temperature-sensing probe false failure and safety operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106568295A true CN106568295A (en) | 2017-04-19 |
Family
ID=58533674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610907252.1A Pending CN106568295A (en) | 2016-10-19 | 2016-10-19 | Control method for identification of defrosting temperature-sensing probe false failure and safety operation |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022095499A1 (en) * | 2020-11-06 | 2022-05-12 | 青岛海尔电冰箱有限公司 | Defrosting control method and refrigeration appliance having same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603532A (en) * | 1983-06-20 | 1985-01-09 | Honda Motor Co Ltd | Abnormality discriminating method of temperature sensor |
| JPH03279768A (en) * | 1990-03-28 | 1991-12-10 | Mitsubishi Electric Corp | Control device for refrigerator |
| JPH04158182A (en) * | 1990-10-22 | 1992-06-01 | Matsushita Refrig Co Ltd | Refrigerator |
| JPH08210740A (en) * | 1995-02-01 | 1996-08-20 | Hoshizaki Electric Co Ltd | Failure detecting device of temperature sensor in refrigerator |
| CN101846414A (en) * | 2009-03-23 | 2010-09-29 | 三洋电机株式会社 | Aircondition and energy device |
| EP2530775A1 (en) * | 2011-05-31 | 2012-12-05 | Aisin Seiki Kabushiki Kaisha | Fuel cell system |
| CN103189611A (en) * | 2010-11-11 | 2013-07-03 | 丰田自动车株式会社 | Abnormality determination apparatus and abnormality determination method for coolant temperature sensor, and engine cooling system |
| CN103575059A (en) * | 2013-11-15 | 2014-02-12 | 合肥美菱股份有限公司 | Detecting system and detecting method for faults of refrigerator defrosting system |
| CN205448465U (en) * | 2015-12-25 | 2016-08-10 | 苏州三星电子有限公司 | White system of refrigeratorization and change white circuit thereof |
-
2016
- 2016-10-19 CN CN201610907252.1A patent/CN106568295A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603532A (en) * | 1983-06-20 | 1985-01-09 | Honda Motor Co Ltd | Abnormality discriminating method of temperature sensor |
| JPH03279768A (en) * | 1990-03-28 | 1991-12-10 | Mitsubishi Electric Corp | Control device for refrigerator |
| JPH04158182A (en) * | 1990-10-22 | 1992-06-01 | Matsushita Refrig Co Ltd | Refrigerator |
| JPH08210740A (en) * | 1995-02-01 | 1996-08-20 | Hoshizaki Electric Co Ltd | Failure detecting device of temperature sensor in refrigerator |
| CN101846414A (en) * | 2009-03-23 | 2010-09-29 | 三洋电机株式会社 | Aircondition and energy device |
| CN103189611A (en) * | 2010-11-11 | 2013-07-03 | 丰田自动车株式会社 | Abnormality determination apparatus and abnormality determination method for coolant temperature sensor, and engine cooling system |
| EP2530775A1 (en) * | 2011-05-31 | 2012-12-05 | Aisin Seiki Kabushiki Kaisha | Fuel cell system |
| CN103575059A (en) * | 2013-11-15 | 2014-02-12 | 合肥美菱股份有限公司 | Detecting system and detecting method for faults of refrigerator defrosting system |
| CN205448465U (en) * | 2015-12-25 | 2016-08-10 | 苏州三星电子有限公司 | White system of refrigeratorization and change white circuit thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022095499A1 (en) * | 2020-11-06 | 2022-05-12 | 青岛海尔电冰箱有限公司 | Defrosting control method and refrigeration appliance having same |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
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