CN102954663B - Refrigerator defrost control method - Google Patents
Refrigerator defrost control method Download PDFInfo
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- CN102954663B CN102954663B CN201110254596.4A CN201110254596A CN102954663B CN 102954663 B CN102954663 B CN 102954663B CN 201110254596 A CN201110254596 A CN 201110254596A CN 102954663 B CN102954663 B CN 102954663B
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- temperature
- control method
- microcontroller
- defrosting
- defrost
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Abstract
The present invention relates to a kind of control method of refrigerator, more specifically relate to a kind of defrosting control method of refrigerator.In the middle of currently available technology, the irrationality of defrosting control method, provide a kind of refrigerator defrost control method, its hardware foundation comprises temperature sensor, microcontroller, driving chip, relay and Defrost heater, described defrosting control method is the judgement basis started for Defrost heater with freezer temperature drop-out value in the unit interval, thus decrease unnecessary defrosting and defrosting generation not in time, make refrigerator always be in best refrigerating state.
Description
Technical field
The present invention relates to a kind of control method of refrigerator, more specifically relate to a kind of defrosting control method of refrigerator.
Background technology
Existing defrosting is generally determine whether to wake up with a start the defrosting defrost interval time according to the compressor accumulated operating time to fix or relatively fixing; Difference environmentally can not regulate the defrost interval time, for example temperature or humidity change, can not have an impact to defrost control system, so just cause two problems, there is unnecessary defrosting, cause the waste of the energy, or be exactly defrost not in time, cause the poor refrigerating efficiency of refrigerator.Moreover, after existing refrigerator breakpoint, defrosting time can reclocking, also as easy as rolling off a logly causes defrosting not in time.All things considered, owing to can not judge according to the frosting degree of evaporator of refrigerator in the middle of prior art, occurs so have defrosting unnecessary or not in time, thus causes the waste of the energy and the bad of refrigeration for refrigerator.
Summary of the invention
The present invention is directed in the middle of currently available technology, the irrationality of defrosting control method, provide a kind of refrigerator defrost control method, its hardware foundation comprises temperature sensor, microcontroller, driving chip, relay and Defrost heater, described defrosting control method is the judgement basis started for Defrost heater with freezer temperature drop-out value in the unit interval, and concrete control method is as follows:
Steps A. gather initial temperature in refrigerating chamber by temperature sensor, and temperature data is converted into electric signal transmission to microcontroller;
Step B. microcontroller record initial temperature T1;
Step C. ensures that compressor is in running order;
Step D. compressor starts works, and arrive section time rating, temperature sensor gathers freezing indoor temperature again, and temperature data is converted into electric signal transmission to microcontroller;
Step e. microcontroller writing task temperature T2, and compare with initial temperature T1, obtain temperature difference △ T=T2-T1;
Step F. △ T and standard △ T ' contrasts by microcontroller,
If △ T < △ is T ', then stop compressor operating, start heater-driven module and open Defrost heater further, defrosting, after complete frost, be returned to the front compressor operating state of defrosting;
If △ T >=△ is T ', then continues compressor operating, do not defrost;
When upper once compressor operating, repeat above A to F step.
Because whole control method utilizes the original sensor of refrigerator (FSensor), so do not increasing on the basis of cost, by the application of new control method, simplify the defrost control of refrigerator.Thus reduce unnecessary defrosting and defrosting generation not in time, make refrigerator always be in best refrigerating state, and reach the effect of energy-saving low-carbon.
Due to section time rating, and the standards change value △ T ' of temperature has important directive function for the startup of whole defrost control system in time rating section, so the present inventor is by a large amount of experimental studies, determining described section time rating is 2 ~ 10 minutes, when described standard △ T ' is 1 ~ 2 DEG C, whole defrost control system most effective.Based on the defrosting work that this standard is done, defrosting frequency is the most suitable, better reaches the ice making efficiency neither affecting refrigerator, unduly works again, cause the technique effect of energy waste.
As a kind of protective device of machinery, the invention discloses between described driving chip and relay and be also provided with diode, thus available protecting relay, its service life is extended.
Certainly, as further improvement of the present invention, the present inventor discloses a kind of refrigerator defrost control method, its hardware foundation comprises temperature sensor, microcontroller, driving chip, relay and Defrost heater, described defrosting control method is the judgement basis started for Defrost heater with freezer temperature drop-out value in the unit interval, and concrete control method is as follows:
Steps A. judge whether refrigerator temperature reaches user's design temperature, if do not have, then carry out step B;
Step B. runs compressor, gathers initial temperature in refrigerating chamber simultaneously, and temperature data is converted into electric signal transmission to microcontroller by temperature sensor;
Step C. microcontroller record initial temperature T1;
Step D. arrives section time rating, and temperature sensor gathers freezing indoor temperature T2 again, and temperature data is converted into electric signal transmission to microcontroller;
Step F. microcontroller writing task temperature T2, and compare with initial temperature T1, obtain temperature difference △ T=T2-T1;
Step e. △ T and standard △ T ' contrasts by microcontroller,
If △ T < △ is T ', then stop compressor operating, start Defrost heater, defrosting, after defrosting, gets back to steps A;
If △ T >=△ is T ', then continues compressor operating, do not defrost, get back to steps A.
In this case, consider the problem such as defrosting efficiency and mechanical protection, it is 2 ~ 10 minutes that the basis of this method also discloses described section time rating, and described standard △ T ' is 1 ~ 2 DEG C.And the diode be also provided with between described driving chip and relay for the protection of relay.
In sum, judge whether according to the frosting situation of evaporator of refrigerator the technology that will carry out defrosting owing to have employed, so reduce unnecessary defrosting and defrosting generation not in time, make refrigerator always be in best refrigerating state.
Accompanying drawing explanation
Fig. 1 is defrosting control method of the present invention based on defrosting circuit board;
Fig. 2 is defrosting schematic diagram;
Fig. 3 is schematic flow sheet of the present invention.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, circuit board is divided into heater-driven module, temperature sensing part mainly comprises temperature sensor in defrosting, data acquisition process part and microcontroller and Defrost heater, compared with traditional technology, add temperature sensing part, thus the frosting situation of evaporimeter can be judged according to the variations in temperature of refrigerator freezing indoor, and then judge whether that needs defrost, its concrete step is:
Steps A. gather initial temperature in refrigerating chamber by temperature sensor, and temperature data is converted into electric signal transmission to microcontroller;
Step B. microcontroller record initial temperature T1;
Step C. ensures that compressor is in running order; If now compressor is in off working state, then first needs to open compressor, if now compressor is in running order, then keep this duty
Step D. arrives section time rating, and temperature sensor gathers freezing indoor temperature T2 again, and temperature data is converted into electric signal transmission to microcontroller;
Step e. microcontroller writing task temperature T2, and compare with initial temperature T1, obtain temperature difference △ T=T2-T1;
Can be seen by Fig. 2, when monitoring in section first and second time ratings, △ T=△ T ', so reflect that evaporimeter inside does not affect the white body of freezer compressor freezing efficiency, does not need to defrost.
But when monitoring in section the 3rd time rating, △ T < △ T ', illustrates that compressor is under same duty, and freezer temperature drop-out value reduces, and then in explanation evaporimeter, create the white body affecting refrigerator freezing efficiency, need to defrost.
But, switch gate operation due to refrigerator often affects the operating efficiency of compressor, this time, the change of internal temperature of refrigerator directly can not react its inner frosting situation, so in order to prevent excessive defrosting, inventor discloses two kinds of situations of forcing not defrost, and the first situation is, if open refrigerator doors when compressor does not work, when causing inner compressor work in 10 minutes subsequently to monitor, △ T differs less than 5 DEG C with △ T ', so belongs to normal condition, forces not defrost; The second situation is, if in the observation process of compressor operating, namely in the gatherer process of △ T data, opens refrigerator doors, thus causes △ T < △ T ', belongs to normal condition, forces not defrost.
Simultaneously, prove according to a large amount of experiences and experiment, the working time of compressor can directly affect frosting situation, when the accumulated operating time of compressor was less than 7 hours, in its section, freezer temperature drop-out value diminishes time rating, usually not because frosting in evaporimeter causes, so now force not defrost.
After situation about not defrosting to above pressure has judged, if do not meet the condition that pressure do not defrost, then stop compressor operating, start heater-driven module and open Defrost heater further, defrosting, after complete frost, is returned to the front compressor operating state of defrosting; Meanwhile, also need the record to compressor accumulation work does not defrost for 100 hours to reset, namely restart accumulation non-defrosting time continuously.This is because, consider the cleaning problems of refrigerator itself, when the accumulated operating time of compressor was more than 100 hours, and once defrost not yet, then force defrosting once.
The flow chart of whole defrosting control method can with reference to accompanying drawing 3.
Claims (7)
1. refrigerator defrost control method, its hardware foundation comprises temperature sensor, microcontroller, driving chip, relay and Defrost heater, it is characterized in that: described defrosting control method is the judgement basis started for Defrost heater with freezer temperature drop-out value in the unit interval, and concrete control method is as follows:
Steps A. gather initial temperature in refrigerating chamber by temperature sensor, and temperature data is converted into electric signal transmission to microcontroller;
Step B. microcontroller record initial temperature T1;
Step C. arrives section time rating, and temperature sensor gathers freezing indoor temperature T2 again, and temperature data is converted into electric signal transmission to microcontroller;
Step D. microcontroller writing task temperature T2, and compare with initial temperature T1, obtain temperature difference △ T=T2-T1;
Step e. △ T and standard △ T ' contrasts by microcontroller,
If △ T < △ is T ', then under the idle state of compressor, start Defrost heater, defrosting, after defrosting, is returned to steps A;
If △ T >=△ is T ', then do not defrost, be returned to steps A.
2. refrigerator defrost control method as claimed in claim 1, is characterized in that: described steps A and step B carry out in compressor operating state.
3. refrigerator defrost control method as claimed in claim 1 or 2, is characterized in that: described section time rating is 2 ~ 10 minutes, and described standard △ T ' is 1 ~ 2 DEG C.
4. refrigerator defrost control method as claimed in claim 3, is characterized in that: be also provided with the diode for the protection of relay between described driving chip and relay.
5. refrigerator defrost control method, its hardware foundation comprises temperature sensor, microcontroller, driving chip, relay and Defrost heater, it is characterized in that: described defrosting control method is the judgement basis started for Defrost heater with freezer temperature drop-out value in the unit interval, and concrete control method is as follows:
Steps A. judge whether refrigerator temperature reaches user's design temperature, if do not have, then carry out step B;
Step B. runs compressor, gathers initial temperature in refrigerating chamber simultaneously, and temperature data is converted into electric signal transmission to microcontroller by temperature sensor;
Step C. microcontroller record initial temperature T1;
Step D. arrives section time rating, and temperature sensor gathers freezing indoor temperature T2 again, and temperature data is converted into electric signal transmission to microcontroller;
Step e. microcontroller writing task temperature T2, and compare with initial temperature T1, obtain temperature difference △ T=T2-T1;
Step F. △ T and standard △ T ' contrasts by microcontroller,
If △ T < △ is T ', then stop compressor operating, start Defrost heater, defrosting, after defrosting, gets back to steps A;
If △ T >=△ is T ', then continues compressor operating, do not defrost, get back to steps A.
6. refrigerator defrost control method as claimed in claim 5, is characterized in that: described section time rating is 2 ~ 10 minutes, and described standard △ T ' is 1 ~ 2 DEG C.
7. the refrigerator defrost control method as described in claim 5 or 6, is characterized in that: be also provided with the diode for the protection of relay between described driving chip and relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110254596.4A CN102954663B (en) | 2011-08-31 | 2011-08-31 | Refrigerator defrost control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110254596.4A CN102954663B (en) | 2011-08-31 | 2011-08-31 | Refrigerator defrost control method |
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| CN102954663A CN102954663A (en) | 2013-03-06 |
| CN102954663B true CN102954663B (en) | 2016-03-30 |
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| CN201110254596.4A Active CN102954663B (en) | 2011-08-31 | 2011-08-31 | Refrigerator defrost control method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105571239A (en) * | 2016-03-04 | 2016-05-11 | 广东格兰仕集团有限公司 | Automatic-control refrigerator and control method and defrosting method thereof |
| CN106679325A (en) * | 2017-01-09 | 2017-05-17 | 海信（山东）冰箱有限公司 | Method and device for icing protection for evaporator of refrigerator, and refrigerator |
| CN113899156B (en) * | 2021-10-11 | 2022-08-12 | 珠海格力电器股份有限公司 | Refrigeration equipment, defrosting control method, device and system thereof, and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560433A (en) * | 1991-09-02 | 1993-03-09 | Sharp Corp | Frost removing system for cooler |
| JPH102658A (en) * | 1996-06-14 | 1998-01-06 | Matsushita Refrig Co Ltd | Refrigerator with freezer |
| CN1175677A (en) * | 1996-08-31 | 1998-03-11 | 大宇电子株式会社 | Method for controlling pausing period of defrosting operation of refrigerator |
| JP2002081843A (en) * | 2000-08-31 | 2002-03-22 | Hoshizaki Electric Co Ltd | Method for controlling defrosting operation in freezer device |
| CN1598457A (en) * | 2004-07-30 | 2005-03-23 | 海信集团有限公司 | Method for controlling time-sharing work of frequency-conversion air-cooled refrigerator |
| JP2008180437A (en) * | 2007-01-24 | 2008-08-07 | Fuji Electric Retail Systems Co Ltd | Cooling apparatus |
-
2011
- 2011-08-31 CN CN201110254596.4A patent/CN102954663B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560433A (en) * | 1991-09-02 | 1993-03-09 | Sharp Corp | Frost removing system for cooler |
| JPH102658A (en) * | 1996-06-14 | 1998-01-06 | Matsushita Refrig Co Ltd | Refrigerator with freezer |
| CN1175677A (en) * | 1996-08-31 | 1998-03-11 | 大宇电子株式会社 | Method for controlling pausing period of defrosting operation of refrigerator |
| JP2002081843A (en) * | 2000-08-31 | 2002-03-22 | Hoshizaki Electric Co Ltd | Method for controlling defrosting operation in freezer device |
| CN1598457A (en) * | 2004-07-30 | 2005-03-23 | 海信集团有限公司 | Method for controlling time-sharing work of frequency-conversion air-cooled refrigerator |
| JP2008180437A (en) * | 2007-01-24 | 2008-08-07 | Fuji Electric Retail Systems Co Ltd | Cooling apparatus |
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