CN105953522B - A kind of refrigerator defrosting control method - Google Patents
A kind of refrigerator defrosting control method Download PDFInfo
- Publication number
- CN105953522B CN105953522B CN201610369418.9A CN201610369418A CN105953522B CN 105953522 B CN105953522 B CN 105953522B CN 201610369418 A CN201610369418 A CN 201610369418A CN 105953522 B CN105953522 B CN 105953522B
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- China
- Prior art keywords
- temperature
- transfer medium
- heat transfer
- control method
- defrosting
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- 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
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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
- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- 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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- 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 present invention provides a kind of refrigerator defrosting control method, and the refrigerator has press, evaporator, defrosting system and the control panel of control defrosting system work.The defrosting system includes liquid reserve tank, the heater being disposed adjacent with evaporator, the liquid pump for connecting the heat cycles pipeline of the heater and liquid reserve tank and being set on heat cycles pipeline, the liquid reserve tank is built-in to fill heat transfer medium and the liquid reserve tank is equipped with heating element to heat the heat transfer medium, the defrosting control method mainly includes when judging that evaporator needs defrost, freezed in advance, and controls unlatching heating element and heat transfer medium is heated；Stop press again, starting liquid pump carries out defrost to evaporator；Finally, closing heating element, stop solution pump operation.Using defrosting control method of the present invention, defrost efficiency can be improved, reduce the temperature fluctuation of refrigerator compartment in defrost process.
Description
Technical field
The present invention relates to refrigerator art, in particular to a kind of refrigerator defrosting control method.
Background technique
Many deficiencies such as slow compared to the easy frosting in direct cooling refrigerator liner surface, poor temperature uniformity, refrigerating speed, it is air-cooled
Refrigerator is since temperature uniformity is good, refrigerating speed is fast, defrosts and be easier to realize big volume refrigerator refrigeration demand without manual
The features such as, increasingly by the approval of market and consumer.
Wherein, wind cooling refrigerator is without defrosting by hand, but is carried out by its internal defrost heating tube being arranged to evaporator
Periodic heat defrosting.But traditional defrost heating tube mostly uses the electrothermal tube being arranged corresponding to evaporator, in the cabinet of refrigerator
Forceful electric power is accessed, realizes that there is also the security risks of electric shock while automatic defrosting operates；What is more, and it is on fire also to will cause refrigerator
With explosion.
In consideration of it, 1858523 A of patent CN discloses a kind of cold-storage defrosting refrigerator, using refrigeration system waste heat and pass through biography
Thermal medium realizes defrost；203501592 U of patent CN discloses a kind of cooling system, collects the waste heat of condenser to evaporator
Carry out defrost.Above-mentioned defrosting system no setting is required heating element, eliminates safe hidden trouble.But during defrost, heating tube and work
The temperature for making medium can sharply decline, and then influence the efficiency of defrost.In addition, 102967118 A of Chinese patent CN discloses one kind
Defrosting control method, when refrigerator has defrost request, compressor is shut down after working on t seconds, then carries out heating defrost again.
But the technical issues of it is solved is by coordinating operating such that freeze in evaporator and being situated between for refrigeration system press and regulating valve
Matter gives full play to refrigeration.
In addition, the period selection of detection, the defrost of evaporator frost layer is focused on for the research of defrosting control method in the industry
Etc..It is necessary to provide a kind of new refrigerator defrosting control methods, improve defrost efficiency, and make refrigerator defrost process medium temperature
It spends more stable.
Summary of the invention
It is an object of that present invention to provide a kind of refrigerator defrosting control methods, can reduce the temperature wave during refrigerator defrost
It is dynamic, improve defrost efficiency.
For achieving the above object, the present invention provides a kind of refrigerator defrosting control method, and the refrigerator has press, steams
Send out the control panel of device, defrosting system and control defrosting system work.The defrosting system includes liquid reserve tank, adjacent with evaporator sets
The heat cycles pipeline of the heater, the connection heater and liquid reserve tank set and the liquid being set on heat cycles pipeline
Pump, the liquid reserve tank is built-in to fill heat transfer medium and the liquid reserve tank is equipped with heating element to heat the heat transfer medium.
The defrosting system further includes the first check valve, second one-way valve and the pressure pump being set on the heat cycles pipeline, institute
It states the first check valve and second one-way valve is located at the both ends of the heater.The defrosting control method specifically includes:
Judge whether evaporator needs defrost；
If so, judging whether press runs；
If so, keeping press operation to be freezed and be added up pre- refrigeration duration in advance, control opens heating element to heat transfer
Medium is heated；
If it is not, starting press is freezed in advance and accumulative pre- refrigeration duration, control unlatching heating element to heat transfer medium into
Row heating；
Stop press operation；
Heat transfer medium is pumped to heater and carries out defrost to evaporator by starting liquid pump；
Heating element, stop solution pump operation are closed in control, and defrost terminates；
After liquid pump stops, starting pressure pump for the heat transfer medium pumped back liquid reserve tank in heater.
As a further improvement of the present invention, when refrigeration duration adds up to the first preset duration t1 in advance, stop press fortune
Row.
As a further improvement of the present invention, the refrigerator is also formed with storage compartment, and the defrosting control method also wraps
Include the real time temperature for obtaining storage compartment；The real time temperature and set temperature of the storage compartment are compared, and according to real time temperature
The first preset duration t1 is obtained with the difference of set temperature.
As a further improvement of the present invention, while starting press is freezed in advance, heating element pair is opened in control
Heat transfer medium is heated.
As a further improvement of the present invention, the liquid reserve tank is additionally provided with first to real-time detection heat-transfer medium temperature
Temperature sensor, the defrosting control method further include that control unlatching heating element carries out heating to heat transfer medium until the storage
The temperature of heat transfer medium in liquid case reaches the first preset temperature T1, and maintains in liquid reserve tank the temperature of heat transfer medium pre- with first
If the difference of temperature T1 is less than fiducial temperature Δ T.
As a further improvement of the present invention, start liquid pump when time cumulation after press stops is to the second preset duration t2
Defrost is carried out to evaporator.
As a further improvement of the present invention, when adding up to third preset duration t3 in the liquid pump continuous working period, control
Heating element is closed, the heating to heat transfer medium in liquid reserve tank is stopped；After heating element closing, liquid pump is controlled after reforwarding
It goes and adds up liquid pump and continue to run after the 4th preset duration t4, stop solution pump operation.
As a further improvement of the present invention, the defrosting system also have to detect the evaporator temperature second
Temperature sensor, the defrosting control method further include detecting the real time temperature of evaporator and when the real time temperature of evaporator reaches
When the second preset temperature T2, heating element is closed in control, stops the heating to heat transfer medium in liquid reserve tank；And in the evaporator
Real time temperature when reaching third preset temperature T3, stop solution pump operation.
Beneficial effects of the present invention: defrosting control method of the present invention is used, by freezing in advance so that the press and steaming
When hair device stops working, the pre- nonresident portion cooling capacity of refrigerator inside；And by the continuous heating of heating element during defrost,
So that heater keeps higher defrost temperature, defrost efficiency is improved, shortens the defrost time, reduces the temperature fluctuation of refrigerator.
Detailed description of the invention
Fig. 1 is the structural schematic diagram using the defrosting system of refrigerator defrosting control method of the present invention；
Fig. 2 is the control flow schematic diagram of refrigerator defrosting control method of the present invention.
Specific embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But the embodiment is not intended to limit
The present invention, structure that those skilled in the art are made according to the embodiment, method or transformation functionally are wrapped
Containing within the scope of the present invention.
A better embodiment of the invention is shown referring to Fig. 1 and Fig. 2.Using the change of refrigerator defrosting control method of the present invention
Defrosting system includes heater 11 and liquid reserve tank 12, and the liquid reserve tank 12 is built-in to fill heat transfer medium and the liquid reserve tank 12 is equipped with
To heat the heating element 13 of the heat transfer medium.The defrosting system further includes connecting the heater 11 and liquid reserve tank 12
Heat cycles pipeline 14 and the liquid pump 15 that is set on heat cycles pipeline 14 and pressure pump 16.
The refrigerator has the control panel of press, evaporator 21 and control defrosting system work, and the refrigerator is also
It is formed with storage compartment and the Machine Room to accommodate press.
The defrosting control method specifically includes:
Judge whether evaporator 21 needs defrost by the control panel；
If so, judging whether press runs；
If so, keeping press operation to be freezed and be added up pre- refrigeration duration in advance, control is opened 13 pairs of heating element and is passed
Thermal medium is heated；
If it is not, starting press is freezed in advance and accumulative pre- refrigeration duration, control open heating element 13 to heat transfer medium
It is heated；
When refrigeration duration adds up to the first preset duration t1 in advance, stop press operation；
Press stop after time cumulation to the second preset duration t2 when, starting liquid pump pumps heat transfer medium to heater
11 pairs of evaporators 21 carry out defrost；
Heating element, stop solution pump operation are closed in control, and defrost terminates.
Wherein, the defrosting control method further includes the real time temperature for obtaining storage compartment；Compare the storage compartment
Real time temperature and set temperature, and the first preset duration t1 is obtained according to the difference of real time temperature and set temperature.
The defrosting control method further includes after the stopping of liquid pump 15, and the heat transfer in heater 11 is situated between by starting pressure pump 16
Matter pumped back liquid reserve tank 12.The defrosting system further include the first check valve 171 being set on the heat cycles pipeline and
Second one-way valve 172 when the work of evaporator 21 is freezed, retains in heater 11 without heat transfer medium, when reducing the work of evaporator 21
Loss of refrigeration capacity, reduce to the heat resistance demand of heat transfer medium.
The liquid reserve tank 12 is additionally provided with the first temperature sensor (not shown) to real-time detection heat-transfer medium temperature, institute
Stating defrosting control method further includes that control unlatching heating element 13 carries out heating to the heat transfer medium in liquid reserve tank 12 until described
The temperature of heat transfer medium reaches the first preset temperature T1, and maintains the temperature of heat transfer medium and the first preset temperature in liquid reserve tank 12
The difference of T1 is less than fiducial temperature Δ T.
In the present embodiment, while starting press is freezed in advance, control opens heating element 13 to liquid reserve tank 12
In heat transfer medium heated.It is apparent that the opening time of heating element 13 can also be another according to the power of heating element 13
Row setting, the power for such as working as heating element 13 is larger, and when the first preset duration t1 longer, can be freezed it in advance in press
After be then turned on heating element 13 and heated；Suppression or when the power of heating element 13 is smaller, and the first preset duration t1 also compared with
In short-term, the opening time of heating element 13 can suitably be shifted to an earlier date.In short, being heated to the heat transfer medium in liquid reserve tank 12
It is as short as possible to the time between the unlatching of liquid pump 15 after first preset temperature T1, the heat transfer medium in liquid reserve tank 12 is reduced whereby
Soaking time reduces energy consumption.
The defrosting control method further include: when adding up to third preset duration t3 in 15 continuous working period of liquid pump, control
System closes heating element 13, stops the heating to heat transfer medium in liquid reserve tank 12；After the heating element 13 closing, liquid is controlled
Pump 15, which continues to run and adds up liquid pump 15, continues to run the time until after the 4th preset duration t4, stops liquid pump 15 and runs.At this
In another embodiment of invention, the defrosting system also has the second temperature sensing to detect 21 temperature of evaporator
Device (not shown), the defrosting control method further include the real time temperature for detecting evaporator 21 and the real time temperature for working as evaporator 21
When reaching the second preset temperature T2, heating element 13 is closed in control, stops the heating to heat transfer medium in liquid reserve tank 12；When described
When the real time temperature of evaporator 21 reaches third preset temperature T3, stops liquid pump 15 and run.
In conclusion defrosting control method of the present invention is by the pre- refrigeration of evaporator 21 so that the evaporator 21 stops
When work, pre- nonresident portion cooling capacity in the storeroom room of the refrigerator avoids the temperature for storing compartment during defrost from being increased to exceed
Given threshold；The continuous heating for passing through heating element 13 during defrost mentions so that heater 11 keeps higher defrost temperature
High defrost efficiency shortens the defrost time, reduces the temperature fluctuation of refrigerator；And close electricity in advance before liquid pump 15 stops working
Thermal element 13 reduces energy consumption so that thermal energy is fully used.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of refrigerator defrosting control method, the refrigerator has press, evaporator, defrosting system and control defrosting system work
Control panel, it is characterised in that: the defrosting system includes liquid reserve tank, the heater being disposed adjacent with evaporator, described in connection
The heat cycles pipeline of heater and liquid reserve tank and the liquid pump being set on heat cycles pipeline, the liquid reserve tank is built-in to be filled
Heat transfer medium and the liquid reserve tank are equipped with the heating element to heat the heat transfer medium, and the defrosting system further includes setting
The first check valve, second one-way valve and pressure pump on the heat cycles pipeline, first check valve and second is unidirectionally
Valve is located at the both ends of the heater, and the defrosting control method specifically includes:
Judge whether evaporator needs defrost；
If so, judging whether press runs；
If so, keeping press operation to be freezed and be added up pre- refrigeration duration in advance, control opens heating element to heat transfer medium
It is heated；
If it is not, starting press is freezed in advance and accumulative pre- refrigeration duration, control are opened heating element and added to heat transfer medium
Heat；
Stop press operation；
Heat transfer medium is pumped to heater and carries out defrost to evaporator by starting liquid pump；
Heating element, stop solution pump operation are closed in control, and defrost terminates；
After liquid pump stops, starting pressure pump for the heat transfer medium pumped back liquid reserve tank in heater.
2. defrosting control method according to claim 1, it is characterised in that: when refrigeration duration adds up default to first in advance
When long t1, stop press operation.
3. defrosting control method according to claim 2, which is characterized in that the refrigerator is also formed with storage compartment, institute
Stating defrosting control method further includes the real time temperature for obtaining storage compartment；Compare the real time temperature and setting temperature of the storage compartment
Degree, and the first preset duration t1 is obtained according to the difference of real time temperature and set temperature.
4. defrosting control method according to claim 1, it is characterised in that: while starting press is freezed in advance,
Control is opened heating element and is heated to heat transfer medium.
5. defrosting control method according to claim 1, it is characterised in that: the liquid reserve tank is additionally provided with to real-time detection
First temperature sensor of heat-transfer medium temperature, the defrosting control method further include that control opens heating element to heat transfer medium
Heating is carried out until the temperature of the heat transfer medium in the liquid reserve tank reaches the first preset temperature T1, and maintains heat transfer in liquid reserve tank
The temperature of medium and the difference of the first preset temperature T1 are less than fiducial temperature Δ T.
6. defrosting control method according to claim 1, it is characterised in that: press stop after time cumulation to second pre-
If starting liquid pump when duration t2 carries out defrost to evaporator.
7. defrosting control method according to claim 6, it is characterised in that: add up when the liquid pump continuous working period to third
When preset duration t3, heating element is closed in control, stops the heating to heat transfer medium in liquid reserve tank；It is closed in the heating element
Afterwards, control liquid pump continues to run and adds up liquid pump and continues to run after the 4th preset duration t4, stop solution pump operation.
8. defrosting control method according to claim 6, it is characterised in that: the defrosting system also has to detect
The second temperature sensor of evaporator temperature is stated, the defrosting control method further includes detecting the real time temperature of evaporator and when steaming
When the real time temperature of hair device reaches the second preset temperature T2, heating element is closed in control, is stopped to heat transfer medium in liquid reserve tank
Heating；And when the real time temperature of the evaporator reaches third preset temperature T3, stop solution pump operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369418.9A CN105953522B (en) | 2016-05-27 | 2016-05-27 | A kind of refrigerator defrosting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369418.9A CN105953522B (en) | 2016-05-27 | 2016-05-27 | A kind of refrigerator defrosting control method |
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| Publication Number | Publication Date |
|---|---|
| CN105953522A CN105953522A (en) | 2016-09-21 |
| CN105953522B true CN105953522B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610369418.9A Active CN105953522B (en) | 2016-05-27 | 2016-05-27 | A kind of refrigerator defrosting control method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928258A (en) * | 1957-03-07 | 1960-03-15 | Gen Motors Corp | Evaporator defrosting means |
| CN1112229A (en) * | 1994-02-28 | 1995-11-22 | 东芝株式会社 | Frost removing apparatus |
| CN1215145A (en) * | 1997-08-26 | 1999-04-28 | 大宇电子株式会社 | Method for reducing refrigerator running noise |
| CN2400764Y (en) * | 1999-12-30 | 2000-10-11 | 张晓军 | Anti-freezing device for air conditioner |
| CN1821689A (en) * | 2006-03-02 | 2006-08-23 | 刘银龙 | Defrost condenser of heat exchanger outdoor machine and its defrost control method |
| CN102967118A (en) * | 2012-12-12 | 2013-03-13 | 合肥美菱股份有限公司 | Refrigerator defrosting control method and refrigerator adopting method |
| CN103335469A (en) * | 2013-07-15 | 2013-10-02 | 合肥美的电冰箱有限公司 | Control method of air cooling refrigerator and air cooling refrigerator |
| CN203501611U (en) * | 2013-07-01 | 2014-03-26 | 福州富雪岛制冷设备有限公司 | Cooling system with defrosting function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526757Y (en) * | 2001-06-08 | 2002-12-18 | 程聪棋 | Device for refrigerating and defrosting |
| US20070107453A1 (en) * | 2005-11-16 | 2007-05-17 | Honeywell International Inc. | Heat exchanger with embedded heater |
-
2016
- 2016-05-27 CN CN201610369418.9A patent/CN105953522B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928258A (en) * | 1957-03-07 | 1960-03-15 | Gen Motors Corp | Evaporator defrosting means |
| CN1112229A (en) * | 1994-02-28 | 1995-11-22 | 东芝株式会社 | Frost removing apparatus |
| CN1215145A (en) * | 1997-08-26 | 1999-04-28 | 大宇电子株式会社 | Method for reducing refrigerator running noise |
| CN2400764Y (en) * | 1999-12-30 | 2000-10-11 | 张晓军 | Anti-freezing device for air conditioner |
| CN1821689A (en) * | 2006-03-02 | 2006-08-23 | 刘银龙 | Defrost condenser of heat exchanger outdoor machine and its defrost control method |
| CN102967118A (en) * | 2012-12-12 | 2013-03-13 | 合肥美菱股份有限公司 | Refrigerator defrosting control method and refrigerator adopting method |
| CN203501611U (en) * | 2013-07-01 | 2014-03-26 | 福州富雪岛制冷设备有限公司 | Cooling system with defrosting function |
| CN103335469A (en) * | 2013-07-15 | 2013-10-02 | 合肥美的电冰箱有限公司 | Control method of air cooling refrigerator and air cooling refrigerator |
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| CN105953522A (en) | 2016-09-21 |
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