CN104833167A - Air cooling refrigerator defrosting method - Google Patents
Air cooling refrigerator defrosting method Download PDFInfo
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- CN104833167A CN104833167A CN201510089437.1A CN201510089437A CN104833167A CN 104833167 A CN104833167 A CN 104833167A CN 201510089437 A CN201510089437 A CN 201510089437A CN 104833167 A CN104833167 A CN 104833167A
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- refrigerator
- time
- defrost
- compressor
- refrigerating chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- F25D21/08—Removing frost by electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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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 an air cooling refrigerator defrosting method. The air cooling refrigerator defrosting method includes the following steps that: first step, after accumulative operating time of a compressor achieves a set value, the method enters a second step; second step, defrosting preparation is performed; third step, after the temperature of a freezing chamber drops TLD degrees, an electric control device of the refrigerator judges whether THS is smaller than TDFTE-3 degrees in a refrigeration process of the freezing chamber, when THS<=TDFTE-3 degrees, the second step is terminated, and the method enters a fourth step; and fourth step, defrosting is performed, the defrosting specifically includes the following steps that: the electric control device controls the compressor and makes the same stop working, and then, starts up a freezing defrosting heating tube to heat an evaporator, and turns off the freezing defrosting heater when a freezing defrosting electric heating condition quitting condition is satisfied, and the electric control device control makes the compressor stop for 6 minutes, and then, the air cooling refrigerator defrosting method is terminated, a normal startup-shutdown control program is initiated. According to the air cooling refrigerator defrosting method of the invention, an optimized control method is utilized to perform fine adjustment on a defrosting process, and therefore, energy consumption increase caused by frequent defrosting of the refrigerator can be avoided, and condensed frost can be melt completely.
Description
Technical field
The present invention relates to refrigeration technology field, especially a kind of defrosting method of wind cooling refrigerator.
Background technology
The defrost technology of wind cooling refrigerator is, utilizes the fan of wind cooling refrigerator inside and ducting system to make cold wind blow to box house from air outlet, with freezing, chilled food.Along with hot blast, steam suck in return airway by air circulation, by freezing during evaporimeter to form frost layer in evaporator surface, the frost of box house so just can be removed.But condensation frost layer on an evaporator will have influence on refrigeration performance, and the even circulation of block air, can cause the temperature recovery of casing on the contrary, affect refrigeration, increase energy consumption, therefore need to carry out defrost to evaporimeter.
Existing defrost technology utilizes compressor operating timer to judge to need defrost periods, defrost timer to open to record defrost electrical heating the time continued, the temperature of defrosting sensor judges the temperature that defrost electrical heating is opened, with temperature that defrost electrical heating is exited etc., realize defrost with this.In actual applications, along with the change of ring temperature, the change of humidity, the change of number of times during enabling defrost, food place number, humidity of food etc. factors, all can affect the thickness of frost layer that evaporator surface is formed.
Moreover current defroster is all adopt electric heating tube, be generally the power of 100W-280W, the frequency of therefore defrost and time are all the factors affecting energy consumption.
Summary of the invention
The object of the present invention is to provide one both can not to carry out frequent defrost so that increase energy consumption, again can effectively by wind cooling refrigerator defrosting method complete for the frostization of condensation.
For achieving the above object, wind cooling refrigerator defrosting method of the present invention carries out according to the following steps:
First, after refrigerator powers up start, the electric control gear of refrigerator sets compressor accumulated running time be first LJT, LJT is that the compressor preset before refrigerator dispatches from the factory adds up the normal operation time; 7≤LJT≤7.5 hour;
One, compressor accumulated running time reach setting value after refrigerator electric control gear control refrigerator enter second step and defrost preparation process;
Two, this step is defrost preparation process, and specifically the electric control gear of the refrigerator design temperature that freezed by refrigerating chamber lowers TLD degree; TLD is the lower temperature regulating of refrigerating chamber setting before the defrost preset before refrigerator dispatches from the factory, and its span is 1≤TLD≤3 DEG C;
If refrigerating chamber refrigeration more than TYL minute cryogenic temperature decline TLD degree not yet, then directly enters the 4th step; TYL is refrigerating chamber cooling time before the defrost preset before refrigerator dispatches from the factory, and its span is 30≤TYL≤70 minute;
Three, after freezer temperature decline TLD degree, in the process of refrigerating chamber refrigeration, the electric control gear of refrigerator judges whether THS is less than TDFTE-3 degree, terminates second step and enter the 4th step when THS≤TDFTE-3 spends; THS is defrosting sensor temperature; TDFTE is the defrost temperature preset before refrigerator dispatches from the factory, and its span is 6≤TDFTE≤13 DEG C;
Four, the 4th step is defrost step, specifically electric control gear control compressor quits work, then freezing defrost heater pipe heating fumigators is opened, after reaching freezing defrost electrical heating exit criteria, close freezing Defrost heater and make compressor shutdown 6min, then exit this wind cooling refrigerator defrosting method and proceed to normal startup-shutdown control program;
Described freezing defrost electrical heating exit criteria is a or b:
If a. THS > TDFTE-3 degree, then the electric control gear of refrigerator controls the clearing of compressor cumulative time, turns back to first step;
If b. THS > TDFTE or defrost time are greater than 40 minutes, then turn back to first step.
Before described first step, if the defrost time of last time is less than DJRT1 minute, then start to carry out first step after the setting value of this compressor accumulated running time is adjusted to LJTD by the electric control gear of refrigerator;
DJRT1 is the first defrost time of presetting before refrigerator dispatches from the factory, and its span is 16≤DJRT1≤25 minute;
LJTD is that the accumulative operation of compressor preset before refrigerator dispatches from the factory is long-time, and its span is 15≤LJTD≤30 hour;
When following three kinds of any one exiting in situation occur, the electric control gear of refrigerator judges compressor accumulated running time, when compressor accumulated running time >=LJT time proceed to second step immediately; As compressor cumulative time < LJT, then proceed to second step after continuing to be accumulate to LJT hour;
Described three kinds are exited situation and refer to:
1. the defrost time of last time is greater than DJRT1;
2. refrigerating chamber and refrigerating chamber add up door opening times and are greater than KMCS time; KMCS is that refrigerating chamber default before refrigerator dispatches from the factory and refrigerating chamber add up door opening times, and its span is 3≤KMCS≤6 time;
3. refrigerating chamber and refrigerating chamber enabling cumulative time are greater than KMSJT minute; KMSJT is the refrigerating chamber and refrigerating chamber enabling cumulative time preset before refrigerator dispatches from the factory, and its span is 3≤KMSJT≤15 time.
Exited the setting of situation by above-mentioned three kinds, the problems such as refrigerator open overlong time, spin manifold temperature are too high, frosting is too many, the interval defrost time is oversize can be avoided.
By said method, solve electrical heating every how long opening optimum technical problem.
Before described first step, if defrost time last time is more than or equal to DJRT1 minute be less than DJRT2 minute, then the electric control gear of refrigerator control this compressor accumulated running time be adjusted to normal value and LJT after proceed to first step; DJRT2 is the second defrost time of presetting before refrigerator dispatches from the factory, and its span is 26≤DJRT2≤39 minute.
Before described first step, if defrost time last time is more than or equal to DJRT2 be less than 40 minutes, then proceed to first step after this compressor accumulated running time is adjusted to LJTX hour by the electric control gear of refrigerator; LJTX is the compressor accumulative operation short time of presetting before refrigerator dispatches from the factory, and its span is 4≤LJTX≤5 hour.
The present invention is based on existing defrost technology, utilize the control method optimized to become more meticulous adjustments to defrost process, make refrigerator both can not carry out frequent defrost so that increase energy consumption, again can effectively by complete for the frostization of condensing.By the judgement to this defrost time, determine next defrost periods, we can reach by experiment, under the impact of the different factors such as ring epidemic disaster, door opening times, have different defrost periods.So both can not carry out frequent defrost, increase energy consumption.Again can effectively by complete for the frostization of condensation.Exited the setting of situation by three kinds, the problems such as refrigerator open overlong time, spin manifold temperature are too high, frosting is too many, the interval defrost time is oversize can be avoided.
Detailed description of the invention
wind cooling refrigerator defrosting method of the present invention, carries out according to the following steps:
First, after refrigerator powers up start, the electric control gear of refrigerator sets compressor accumulated running time be first LJT, LJT is that the compressor preset before refrigerator dispatches from the factory adds up the normal operation time; 7≤LJT≤7.5 hour;
One, compressor accumulated running time reach setting value after refrigerator electric control gear control refrigerator enter second step and defrost preparation process;
Two, this step is defrost preparation process, and specifically the electric control gear (being routine techniques) of the refrigerator design temperature that freezed by refrigerating chamber lowers TLD degree; TLD is the lower temperature regulating of refrigerating chamber setting before the defrost preset before refrigerator dispatches from the factory, and its span is 1≤TLD≤3 DEG C;
If refrigerating chamber refrigeration more than TYL minute cryogenic temperature decline TLD degree not yet, then directly enters the 4th step; (meaning of this operation is to solve defrost rear box temperature and rises, so first that temperature is drop-down before defrost) TYL is refrigerating chamber cooling time before the defrost preset before refrigerator dispatches from the factory, and its span is 30≤TYL≤70 minute;
Three, after freezer temperature decline TLD degree, in the process of refrigerating chamber refrigeration, the electric control gear of refrigerator judges whether THS is less than TDFTE-3 degree, terminates second step and enter the 4th step when THS≤TDFTE-3 spends; THS is defrosting sensor temperature; TDFTE is the defrost temperature preset before refrigerator dispatches from the factory, and its span is 6≤TDFTE≤13 DEG C; The effect of this operation is the normal unlatching solving electrical heating and defrost process.
Four, the 4th step is defrost step, specifically electric control gear control compressor quits work, then freezing defrost heater pipe heating fumigators is opened, after reaching freezing defrost electrical heating exit criteria, close freezing Defrost heater and make compressor shutdown 6min, then exit this wind cooling refrigerator defrosting method and proceed to normal startup-shutdown control program;
Described freezing defrost electrical heating exit criteria is a or b: setting freezing defrost electrical heating exit criteria is solve electrical heating how to close optimum problem.
If a. THS > TDFTE-3 degree, then the electric control gear of refrigerator controls the clearing of compressor cumulative time, turns back to first step.
If b. THS > TDFTE or defrost time are greater than 40 minutes, then turn back to first step.
Before described first step, if the defrost time of last time is less than DJRT1 minute, then start to carry out first step after the setting value of this compressor accumulated running time is adjusted to LJTD by the electric control gear of refrigerator;
DJRT1 is the first defrost time of presetting before refrigerator dispatches from the factory, and its span is 16≤DJRT1≤25 minute;
LJTD is that the accumulative operation of compressor preset before refrigerator dispatches from the factory is long-time, and its span is 15≤LJTD≤30 hour;
When following three kinds of any one exiting in situation occur, the electric control gear of refrigerator judges compressor accumulated running time, when compressor accumulated running time >=LJT time proceed to second step immediately; As compressor cumulative time < LJT, then proceed to second step after continuing to be accumulate to LJT hour;
Described three kinds are exited situation and refer to:
1. the defrost time of last time is greater than DJRT1;
2. refrigerating chamber and refrigerating chamber add up door opening times and are greater than KMCS time; KMCS is that refrigerating chamber default before refrigerator dispatches from the factory and refrigerating chamber add up door opening times, and its span is 3≤KMCS≤6 time;
3. refrigerating chamber and refrigerating chamber enabling cumulative time are greater than KMSJT minute; KMSJT is the refrigerating chamber and refrigerating chamber enabling cumulative time preset before refrigerator dispatches from the factory, and its span is 3≤KMSJT≤15 time.
Exited the setting of situation by above-mentioned three kinds, the problems such as refrigerator open overlong time, spin manifold temperature are too high, frosting is too many, the interval defrost time is oversize can be avoided.
By said method, solve electrical heating every how long opening optimum technical problem.
Before described first step, if defrost time last time is more than or equal to DJRT1 minute be less than DJRT2 minute, then the electric control gear of refrigerator control this compressor accumulated running time be adjusted to normal value and LJT after proceed to first step; DJRT2 is the second defrost time of presetting before refrigerator dispatches from the factory, and its span is 26≤DJRT2≤39 minute.
Before described first step, if defrost time last time is more than or equal to DJRT2 be less than 40 minutes, then proceed to first step after this compressor accumulated running time is adjusted to LJTX hour by the electric control gear of refrigerator; LJTX is the compressor accumulative operation short time of presetting before refrigerator dispatches from the factory, and its span is 4≤LJTX≤5 hour.
The present embodiment utilizes the control method optimized to become more meticulous adjustments to defrost process, makes refrigerator both can not carry out frequent defrost so that increase energy consumption, again can effectively by complete for the frostization of condensing.By the judgement to this defrost time, determine next defrost periods, we can reach by experiment, under the impact of the different factors such as ring epidemic disaster, door opening times, have different defrost periods.So both can not carry out frequent defrost, increase energy consumption.Again can effectively by complete for the frostization of condensation.Exited the setting of situation by three kinds, the problems such as refrigerator open overlong time, spin manifold temperature are too high, frosting is too many, the interval defrost time is oversize can be avoided.
Wind cooling refrigerator defrosting method of the present invention is applicable to wind cooling refrigerator cabinet and direct cooling refrigerator cabinet, is equally applicable to other similar sensors that utilize to refrigerating appliance evaporimeter carrying out defrost.In wind cooling refrigerator defrosting method of the present invention, the concrete value of each parameter can adjust according to actual conditions and result of the test.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. wind cooling refrigerator defrosting method, is characterized in that carrying out according to the following steps: first, and after refrigerator powers up start, the electric control gear of refrigerator sets compressor accumulated running time be first LJT, LJT is that the compressor preset before refrigerator dispatches from the factory adds up the normal operation time; 7≤LJT≤7.5 hour;
One, compressor accumulated running time reach setting value after refrigerator electric control gear control refrigerator enter second step and defrost preparation process;
Two, this step is defrost preparation process, and specifically the electric control gear of the refrigerator design temperature that freezed by refrigerating chamber lowers TLD degree; TLD is the lower temperature regulating of refrigerating chamber setting before the defrost preset before refrigerator dispatches from the factory, and its span is 1≤TLD≤3 DEG C;
If refrigerating chamber refrigeration more than TYL minute cryogenic temperature decline TLD degree not yet, then directly enters the 4th step; TYL is refrigerating chamber cooling time before the defrost preset before refrigerator dispatches from the factory, and its span is 30≤TYL≤70 minute;
Three, after freezer temperature decline TLD degree, in the process of refrigerating chamber refrigeration, the electric control gear of refrigerator judges whether THS is less than TDFTE-3 degree, terminates second step and enter the 4th step when THS≤TDFTE-3 spends; THS is defrosting sensor temperature; TDFTE is the defrost temperature preset before refrigerator dispatches from the factory, and its span is 6≤TDFTE≤13 DEG C;
Four, the 4th step is defrost step, specifically electric control gear control compressor quits work, then freezing defrost heater pipe heating fumigators is opened, after reaching freezing defrost electrical heating exit criteria, close freezing Defrost heater and make compressor shutdown 6min, then exit this wind cooling refrigerator defrosting method and proceed to normal startup-shutdown control program;
Described freezing defrost electrical heating exit criteria is a or b:
If a. THS > TDFTE-3 degree, then the electric control gear of refrigerator controls the clearing of compressor cumulative time, turns back to first step;
If b. THS > TDFTE or defrost time are greater than 40 minutes, then turn back to first step.
2. wind cooling refrigerator defrosting method according to claim 1, it is characterized in that: before described first step, if the defrost time of last time is less than DJRT1 minute, then start to carry out first step after the setting value of this compressor accumulated running time is adjusted to LJTD by the electric control gear of refrigerator;
DJRT1 is the first defrost time of presetting before refrigerator dispatches from the factory, and its span is 16≤DJRT1≤25 minute;
LJTD is that the accumulative operation of compressor preset before refrigerator dispatches from the factory is long-time, and its span is 15≤LJTD≤30 hour;
When following three kinds of any one exiting in situation occur, the electric control gear of refrigerator judges compressor accumulated running time, when compressor accumulated running time >=LJT time proceed to second step immediately; As compressor cumulative time < LJT, then proceed to second step after continuing to be accumulate to LJT hour;
Described three kinds are exited situation and refer to:
1. the defrost time of last time is greater than DJRT1;
2. refrigerating chamber and refrigerating chamber add up door opening times and are greater than KMCS time; KMCS is that refrigerating chamber default before refrigerator dispatches from the factory and refrigerating chamber add up door opening times, and its span is 3≤KMCS≤6 time;
3. refrigerating chamber and refrigerating chamber enabling cumulative time are greater than KMSJT minute; KMSJT is the refrigerating chamber and refrigerating chamber enabling cumulative time preset before refrigerator dispatches from the factory, and its span is 3≤KMSJT≤15 time.
3. wind cooling refrigerator defrosting method according to claim 1, it is characterized in that: before described first step, if defrost time last time is more than or equal to DJRT1 minute and is less than DJRT2 minute, then the electric control gear of refrigerator control this compressor accumulated running time be adjusted to normal value and LJT after proceed to first step; DJRT2 is the second defrost time of presetting before refrigerator dispatches from the factory, and its span is 26≤DJRT2≤39 minute.
4. wind cooling refrigerator defrosting method according to claim 1, it is characterized in that: before described first step, if defrost time last time is more than or equal to DJRT2 and is less than 40 minutes, then proceed to first step after this compressor accumulated running time is adjusted to LJTX hour by the electric control gear of refrigerator; LJTX is the compressor accumulative operation short time of presetting before refrigerator dispatches from the factory, and its span is 4≤LJTX≤5 hour.
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105546920A (en) * | 2015-12-31 | 2016-05-04 | 青岛海尔股份有限公司 | Refrigerator and self-adaption defrosting control method thereof |
| CN105588395A (en) * | 2016-02-25 | 2016-05-18 | 合肥美菱股份有限公司 | Air-cooling refrigerator air flue heating system and control method thereof |
| CN105674669A (en) * | 2016-02-02 | 2016-06-15 | 河南新飞电器有限公司 | Defrosting methods for double-system air-cooling refrigerator |
| CN106052295A (en) * | 2016-06-14 | 2016-10-26 | 南京创维家用电器有限公司 | Control method and device for refrigerator |
| CN106052228A (en) * | 2016-05-25 | 2016-10-26 | 合肥美的电冰箱有限公司 | Defrosting control method and device for refrigeration equipment and refrigeration equipment |
| CN106766525A (en) * | 2016-12-26 | 2017-05-31 | 青岛海尔股份有限公司 | Wind cooling refrigerator and its defrosting control method |
| CN107152826A (en) * | 2017-05-04 | 2017-09-12 | 合肥美的电冰箱有限公司 | Refrigerator and its defrosting control method, device |
| CN108168197A (en) * | 2017-12-27 | 2018-06-15 | 青岛海尔股份有限公司 | Refrigerator and its defrosting control method |
| CN108302880A (en) * | 2017-12-27 | 2018-07-20 | 青岛海尔股份有限公司 | Refrigerator and its defrosting control method |
| CN106052262B (en) * | 2016-07-06 | 2019-01-04 | 海信容声(广东)冰箱有限公司 | A kind of defrosting method of refrigerator and its refrigerator room |
| CN109631472A (en) * | 2019-01-07 | 2019-04-16 | 广州美的华凌冰箱有限公司 | Wind cooling refrigerator defrosting control method, control device and refrigerator |
| CN109798713A (en) * | 2019-02-18 | 2019-05-24 | 河南新飞制冷器具有限公司 | Three-circulation wind cold refrigerator and its defrosting method |
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| CN110701866A (en) * | 2019-11-20 | 2020-01-17 | 合肥晶弘电器有限公司 | Defrosting control method of refrigerator and refrigerator |
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| CN105546920A (en) * | 2015-12-31 | 2016-05-04 | 青岛海尔股份有限公司 | Refrigerator and self-adaption defrosting control method thereof |
| CN105546920B (en) * | 2015-12-31 | 2019-01-18 | 青岛海尔股份有限公司 | Refrigerator and its adaptive defrosting control method |
| CN105674669A (en) * | 2016-02-02 | 2016-06-15 | 河南新飞电器有限公司 | Defrosting methods for double-system air-cooling refrigerator |
| CN105588395B (en) * | 2016-02-25 | 2017-10-24 | 合肥美菱股份有限公司 | A kind of wind cooling refrigerator duct heating system and its control method |
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