CN113915866A - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN113915866A CN113915866A CN202110205304.1A CN202110205304A CN113915866A CN 113915866 A CN113915866 A CN 113915866A CN 202110205304 A CN202110205304 A CN 202110205304A CN 113915866 A CN113915866 A CN 113915866A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005057 refrigeration Methods 0.000 claims abstract description 39
- 238000007710 freezing Methods 0.000 claims description 30
- 230000008014 freezing Effects 0.000 claims description 30
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000009920 food preservation Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
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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
- F25D29/005—Mounting of control 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
- F25D2600/00—Control issues
- F25D2600/02—Timing
-
- 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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- 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
- F25D2700/12—Sensors measuring the inside temperature
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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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a refrigerator, comprising: a box body, wherein a plurality of storerooms are arranged inside the box body; the air door is arranged between the air guide pipe and the refrigerating air supply pipe in the refrigerator and used for adjusting the steering direction of the air door according to a control command of the controller; the temperature sensor is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct; the controller is configured to: responding to a refrigerating and refrigerating instruction, and controlling the air door to be at an initial angle; acquiring a first refrigerated air supply temperature acquired by a temperature sensor after a first preset time period; calculating a first temperature difference between the first refrigerated supply air temperature and the reference temperature; and calculating a target angle of the damper according to the first temperature difference so as to control the damper to be switched from the initial angle to the target angle. The invention also discloses a refrigerator control method. By adopting the embodiment of the invention, the refrigeration return air and the fresh air are mixed by controlling the turning direction of the air door, so that the refrigeration air supply temperature is increased, the refrigeration temperature reaches an approximately constant temperature state, and the food preservation is facilitated.
Description
Technical Field
The invention relates to the field of refrigerators, in particular to a refrigerator and a control method thereof.
Background
In an air-cooled single system refrigerator, only the evaporator is present in the freezer compartment, and refrigeration is achieved by circulating return air between the freezer compartment and the refrigerator compartment. The fan sends cold air cooled by the evaporator to the refrigerating chamber through the blast pipe, and hot air in the refrigerating chamber returns to the freezing chamber through the return air pipe under the influence of air convection and is cooled at the evaporator, so that the refrigeration cycle is completed. The cooling mode is simple and quick, but has the defect of too low refrigerating air supply temperature, and in order to meet the storage temperature condition of the freezing chamber, the refrigerating air supply temperature is usually below minus 10 ℃, so that the temperature fluctuation in the refrigerating chamber is large, and the temperature control and the food storage of the refrigerating chamber are not facilitated. Meanwhile, as the refrigeration return air temperature is higher than 0 ℃, when hot air flows back to the evaporator, the temperature of the evaporator rises, the existing freezing temperature cannot be maintained in the freezing chamber, the freezing temperature rises, the temperature fluctuation in the freezing chamber is increased, and the storage of food is not facilitated.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerator and a control method thereof, wherein the refrigeration return air and the fresh air are mixed by controlling the turning direction of an air door, so that the refrigeration air supply temperature is increased, the refrigeration temperature fluctuation is reduced, the refrigeration temperature is enabled to reach an approximately constant temperature state, and the preservation of food is facilitated.
To achieve the above object, an embodiment of the present invention provides a refrigerator, including:
a box body, wherein a plurality of storerooms are arranged inside the box body;
the air door is arranged between the air guide pipe and the refrigerating air supply pipe in the refrigerator and used for adjusting the steering direction of the air door according to a control command of the controller;
the temperature sensor is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct;
the controller is configured to:
responding to a refrigerating and refrigerating instruction, and controlling the air door to be at a preset initial angle;
acquiring a first refrigerated air supply temperature acquired by the temperature sensor after a first preset time period;
calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature;
and calculating a target angle of the air door according to the first temperature difference so as to control the air door to be switched from the initial angle to the target angle.
As an improvement of the above, after the damper is switched from the initial angle to the target angle, the controller is further configured to:
acquiring a second refrigerated air supply temperature acquired by the temperature sensor every second preset time period;
calculating a second temperature difference between the second refrigerated supply air temperature and the reference temperature;
and calculating the deflection angle of the air door according to the second temperature difference so as to control the steering of the air door according to the deflection angle.
As an improvement of the above scheme, when the air door turns to the air guide pipe, the return air flow is reduced, and the fresh air flow is increased; when the air door turns to the refrigeration air supply pipe, the return air flow is increased, and the fresh air flow is reduced;
the return air flow is the air quantity of hot return air in the refrigerating chamber after entering a return air inlet and then divided, and one part of the air quantity flows back to a return air outlet at the side of the freezing evaporator; the fresh air flow is the air quantity absorbed by the refrigerating air supply pipe from the evaporator; and the return air flow and the fresh air flow are mixed in the air guide pipe and then flow into the refrigeration air channel.
As an improvement of the scheme, the angle of the air door ranges from 0 degree to 90 degrees; the initial angle is the angle of the air door in the fully open state; wherein, the fully open state is that the air door is 90 degrees away from the refrigeration blast pipe and 0 degree away from the air guide pipe.
As an improvement of the above, the calculating the target angle of the damper according to the first temperature difference includes:
comparing the first temperature difference with a preset temperature grade, and determining the temperature grade of the first temperature difference; each temperature grade is provided with a corresponding target angle;
and acquiring a corresponding target angle according to the temperature grade.
In order to achieve the above object, an embodiment of the present invention further provides a refrigerator control method, including:
responding to a refrigerating and refrigerating instruction, and controlling the air door to be at a preset initial angle; the air door is arranged between the air guide pipe and the refrigerating air supply pipe in the refrigerator;
acquiring a first refrigerated air supply temperature acquired by a temperature sensor after a first preset time period; the temperature sensor is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct;
calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature;
and calculating a target angle of the air door according to the first temperature difference so as to control the air door to be switched from the initial angle to the target angle.
As an improvement of the above, after the damper is switched from the initial angle to the target angle, the method further includes:
acquiring a second refrigerated air supply temperature acquired by the temperature sensor every second preset time period;
calculating a second temperature difference between the second refrigerated supply air temperature and the reference temperature;
and calculating the deflection angle of the air door according to the second temperature difference so as to control the steering of the air door according to the deflection angle.
As an improvement of the above scheme, when the air door turns to the air guide pipe, the return air flow is reduced, and the fresh air flow is increased; when the air door turns to the refrigeration air supply pipe, the return air flow is increased, and the fresh air flow is reduced;
the return air flow is the air quantity of hot return air in the refrigerating chamber after entering a return air inlet and then divided, and one part of the air quantity flows back to a return air outlet at the side of the freezing evaporator; the fresh air flow is the air quantity absorbed by the refrigerating air supply pipe from the evaporator; and the return air flow and the fresh air flow are mixed in the air guide pipe and then flow into the refrigeration air channel.
As an improvement of the scheme, the angle of the air door ranges from 0 degree to 90 degrees; the initial angle is the angle of the air door in the fully open state; wherein, the fully open state is that the air door is 90 degrees away from the refrigeration blast pipe and 0 degree away from the air guide pipe.
As an improvement of the above, the calculating the target angle of the damper according to the first temperature difference includes:
comparing the first temperature difference with a preset temperature grade, and determining the temperature grade of the first temperature difference; each temperature grade is provided with a corresponding target angle;
and acquiring a corresponding target angle according to the temperature grade.
Compared with the prior art, the refrigerator and the control method thereof disclosed by the embodiment of the invention have the advantages that firstly, the air door is controlled to be at a preset initial angle in response to a refrigerating and refrigerating instruction, and the first refrigerating air supply temperature collected by the temperature sensor is obtained after a first preset time period; then, calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature; and finally, calculating a target angle of the air door according to the first temperature difference so as to control the air door to be switched from the initial angle to the target angle. The angle through control air door will refrigerate return air and the new trend mixes, has improved cold-stored air supply temperature, has reduced cold-stored temperature fluctuation, makes cold-stored temperature reach approximate constant temperature state, is favorable to the save of food. In addition, part of the refrigerated return air is mixed with the fresh air, so that the refrigerated return air entering the evaporator side is reduced, the rise of the evaporation temperature is reduced, the temperature rise of the freezing temperature caused by the temperature rise is favorably reduced, and the fluctuation quantity of the freezing temperature is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a refrigerator according to an embodiment of the present invention;
fig. 3 is a flowchart of a refrigerator control method according to an embodiment of the present invention.
Wherein, 1, a refrigerating chamber; 2. a freezing chamber; 3. a foamed layer; 4. an evaporator; 5. a temperature sensor; 6. an air guide pipe; 7. refrigerating the return air pipe; 8. a refrigeration blast pipe; 9. a damper; 101. a refrigerating air supply outlet; 102. a freezing air supply outlet; 103. a refrigerated return air inlet; 104. a refrigerated return air outlet; 11. a refrigeration fan; 22 a refrigeration fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the refrigerator comprises a box body, wherein a plurality of storage chambers are arranged in the box body; the storage compartments are the refrigerating compartment 1 and the freezing compartment 2; the refrigerator also comprises a foaming layer 3, an evaporator 4, a temperature sensor 5, an air guide pipe 6, a refrigerating return air pipe 7, a refrigerating air supply pipe 8, an air door 9, a refrigerating air supply outlet 101, a freezing air supply outlet 102, a refrigerating return air inlet 103, a refrigerating return air outlet 104, a refrigerating fan 11 and a freezing fan 22. The air guide pipe 6 conducts the refrigerating return air pipe 7 and the refrigerating blast pipe 8. The air door 9 is arranged between the air guide pipe 6 and the refrigerating air supply pipe 8 and is used for adjusting the steering direction of the air guide pipe according to a control command of the controller. The temperature sensor 5 is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct.
The controller is configured to:
responding to a refrigerating and refrigerating instruction, and controlling the air door to be at a preset initial angle;
acquiring a first refrigerated air supply temperature acquired by the temperature sensor after a first preset time period;
calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature;
and calculating a target angle of the air door according to the first temperature difference so as to control the air door to be switched from the initial angle to the target angle.
Optionally, when the air door 9 turns to the air guide pipe 6, the return air flow rate is reduced, and the fresh air flow rate is increased; when the air door 9 turns to the refrigeration blast pipe, the return air flow rate is increased, and the fresh air flow rate is reduced;
the return air flow is the air quantity of hot return air in the refrigerating chamber 1 which enters into a return air inlet and then is divided, and one part of the hot return air flows back to a return air outlet at the side of the freezing evaporator; the fresh air flow is the air quantity absorbed by the refrigerating air supply pipe 8 from the evaporator 4; the return air flow and the fresh air flow are mixed in the air guide pipe 6 and then flow into the refrigeration air channel.
In the process of refrigerating, the refrigerating fan 11 sucks air from the refrigerating air duct and blows the air into the refrigerating chamber through the refrigerating air supply outlet 101, the hot return air in the refrigerating chamber 1 enters the refrigerating return air inlet 103 and then is divided, a part of the hot return air flows back to the refrigerating return air outlet 104 on the side of the freezing evaporator 4, and the other part of the hot return air is mixed with the fresh air sucked from the freezing evaporator 22 through the refrigerating air supply pipe 8 through the air guide pipe 6, wherein the fresh air sucked from the evaporator is cold air with lower temperature.
Specifically, the angle of the air door ranges from 0 degree to 90 degrees; the initial angle is the angle of the air door in the fully open state; wherein, the fully open state is that the air door is 90 degrees away from the refrigeration blast pipe and 0 degree away from the air guide pipe.
Specifically, the calculating the target angle of the damper 9 according to the first temperature difference includes:
comparing the first temperature difference with a preset temperature grade, and determining the temperature grade of the first temperature difference; each temperature grade is provided with a corresponding target angle;
and acquiring a corresponding target angle according to the temperature grade.
Illustratively, the predetermined time period is 3 minutes and the reference temperature is 1 ℃. When refrigeration is needed, the air door 9 is fully opened, the air door 9 is 90 degrees away from the refrigeration air supply pipe and 0 degree away from the air guide pipe, namely the fresh air flowing into the refrigeration air duct is the largest in flow, and the return air flow is almost 0.
After the refrigerating operation is carried out for 3 minutes, the temperature sensor 5 detects a first refrigerating air supply temperature of the refrigerating air duct, the controller calculates a first temperature difference between the first refrigerating air supply temperature and the reference temperature, compares the first temperature difference with a preset temperature grade, and determines the temperature grade of the first temperature difference; the temperature grade is divided by a preset first temperature threshold, and if the first temperature threshold is: 20 ℃, 17 ℃, 14 ℃ and 11 ℃.
When the first temperature difference delta t is more than or equal to 20 ℃, the target angle of the air door 9 is 10 degrees, and the controller controls the air door 9 to be 10 degrees away from the refrigerating air supply pipe and 80 degrees away from the air guide pipe at the moment; when the temperature is higher than 20 ℃ and delta t is more than or equal to 17 ℃, the target angle of the air door 9 is 15 degrees, and the controller controls the air door 9 to be 15 degrees away from the refrigerating air supply pipe and 75 degrees away from the air guide pipe; when the temperature is higher than 17 ℃ and delta t is more than or equal to 14 ℃, the target angle of the air door 9 is 20 degrees, and the controller controls the air door 9 to be 20 degrees away from the refrigerating air supply pipe and 70 degrees away from the air guide pipe; when the temperature is higher than 14 ℃ and delta t is more than or equal to 11 ℃, the target angle of the air door 9 is 25 degrees, and the controller controls the air door 9 to be 25 degrees away from the refrigerating air supply pipe and 65 degrees away from the air guide pipe; when the temperature is less than 11 ℃, the target angle of the air door 9 is 30 degrees, and the controller controls the air door 9 to be 30 degrees away from the refrigerating air supply pipe and 60 degrees away from the air guide pipe.
Further, after the damper is switched from the initial angle to the target angle, the controller is further configured to:
acquiring a second refrigerated air supply temperature acquired by the temperature sensor every second preset time period;
calculating a second temperature difference between the second refrigerated supply air temperature and the reference temperature;
and calculating the deflection angle of the air door according to the second temperature difference so as to control the steering of the air door according to the deflection angle.
Illustratively, the second predetermined period of time is 2 minutes. After the air door 9 is controlled to be switched to an angle once from an initial state, monitoring a second refrigerated air supply temperature acquired by the temperature sensor 5 every 2 minutes, if the second refrigerated air supply temperature is different from the reference temperature by more than 3.5 ℃, controlling the air door 9 to deflect towards the refrigerated air supply pipe by 5 degrees by the controller (namely the deflection angle is 5 degrees, the minimum temperature of the air door from a fresh air side during refrigeration is not less than 10 degrees), and if the second refrigerated air supply temperature is different from the reference temperature by 3.5 ℃ or less, controlling the air door 9 to deflect towards the air guide pipe by 5 degrees by the controller.
Compared with the prior art, the refrigerator disclosed by the embodiment of the invention has the advantages that the refrigerating return air and the fresh air are mixed by controlling the angle of the air door, so that the refrigerating air supply temperature is increased, the refrigerating temperature fluctuation is reduced, the refrigerating temperature is enabled to reach an approximately constant temperature state, and the food preservation is facilitated. In addition, part of the refrigerated return air is mixed with the fresh air, so that the refrigerated return air entering the evaporator side is reduced, the rise of the evaporation temperature is reduced, the temperature rise of the freezing temperature caused by the temperature rise is favorably reduced, and the fluctuation quantity of the freezing temperature is reduced.
Referring to fig. 3, fig. 3 is a flowchart of a refrigerator control method according to an embodiment of the present invention, where the refrigerator control method includes:
s1, responding to a refrigerating instruction, and controlling the air door to be at a preset initial angle; wherein the air door is arranged between the air guide pipe and the refrigerating blast pipe in the refrigerator
S2, acquiring a first refrigerating air supply temperature acquired by a temperature sensor after a first preset time period; the temperature sensor is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct;
s3, calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature;
and S4, calculating a target angle of the damper according to the first temperature difference so as to control the damper to be switched from the initial angle to the target angle.
Specifically, the refrigerator control method according to the embodiment of the present invention is implemented by a controller in a refrigerator, the refrigerator includes a cabinet, and a plurality of storage compartments are disposed in the cabinet; the storage compartments are the refrigerating compartment and the freezing compartment; the refrigerator also comprises a foaming layer, an evaporator, a temperature sensor, an air guide pipe, a cold storage air return pipe, a cold storage air supply pipe, an air door, a cold storage air supply outlet, a freezing air supply outlet, a cold storage air return inlet, a cold storage air return outlet, a cold storage fan and a freezing fan. The air guide pipe conducts the refrigerating return air pipe and the refrigerating blast pipe. The air door is arranged between the air guide pipe and the refrigerating air supply pipe and used for adjusting the steering direction of the air guide pipe and the refrigerating air supply pipe according to a control command of the controller. The temperature sensor is arranged in a cold storage air duct of the refrigerator and used for detecting the cold storage air supply temperature of the cold storage air duct.
Optionally, when the air door turns to the air guide pipe, the return air flow is reduced, and the fresh air flow is increased; when the air door turns to the refrigeration air supply pipe, the return air flow is increased, and the fresh air flow is reduced;
the return air flow is the air quantity of hot return air in the refrigerating chamber after entering a return air inlet and then divided, and one part of the air quantity flows back to a return air outlet at the side of the freezing evaporator; the fresh air flow is the air quantity absorbed by the refrigerating air supply pipe from the evaporator; and the return air flow and the fresh air flow are mixed in the air guide pipe and then flow into the refrigeration air channel.
In the refrigerating and refrigerating process, the refrigerating fan sucks air from the refrigerating air duct and blows the air into the refrigerating chamber through the refrigerating air supply outlet, hot return air in the refrigerating chamber enters the refrigerating return air inlet and then is divided, one part of the hot return air flows back to the refrigerating return air outlet on the freezing evaporator side, the other part of the hot return air is mixed with fresh air sucked from the freezing evaporator through the refrigerating air supply pipe through the air guide pipe, and the fresh air sucked from the evaporator is cold air with lower temperature.
Specifically, the angle of the air door ranges from 0 degree to 90 degrees; the initial angle is the angle of the air door in the fully open state; wherein, the fully open state is that the air door is 90 degrees away from the refrigeration blast pipe and 0 degree away from the air guide pipe.
Specifically, in step S4, the calculating the target angle of the damper according to the first temperature difference includes:
comparing the first temperature difference with a preset temperature grade, and determining the temperature grade of the first temperature difference; each temperature grade is provided with a corresponding target angle;
and acquiring a corresponding target angle according to the temperature grade.
Illustratively, the predetermined time period is 3 minutes and the reference temperature is 1 ℃. When refrigeration is needed, the air door is fully opened, the air door is 90 degrees away from the refrigeration air supply pipe and 0 degree away from the air guide pipe, namely the flow of the fresh air flowing into the refrigeration air channel is the largest at the moment, and the flow of the return air is almost 0.
After the refrigerating operation is carried out for 3 minutes, the temperature sensor 5 detects a first refrigerating air supply temperature of the refrigerating air duct, the controller calculates a first temperature difference between the first refrigerating air supply temperature and the reference temperature, compares the first temperature difference with a preset temperature grade, and determines the temperature grade of the first temperature difference; the temperature grade is divided by a preset first temperature threshold, and if the first temperature threshold is: 20 ℃, 17 ℃, 14 ℃ and 11 ℃.
When the first temperature difference delta t is more than or equal to 20 ℃, the target angle of the air door is 10 degrees, and the controller controls the air door to be 10 degrees away from the refrigerating air supply pipe and 80 degrees away from the air guide pipe; when the temperature is higher than 20 ℃ and delta t is more than or equal to 17 ℃, the target angle of the air door is 15 degrees, and the controller controls the air door to be 15 degrees away from the refrigerating air supply pipe and 75 degrees away from the air guide pipe; when the temperature is higher than 17 ℃ and delta t is more than or equal to 14 ℃, the target angle of the air door is 20 degrees, and the controller controls the air door to be 20 degrees away from the refrigerating air supply pipe and 70 degrees away from the air guide pipe; when the temperature is higher than 14 ℃ and delta t is more than or equal to 11 ℃, the target angle of the air door is 25 degrees, and the controller controls the air door to be 25 degrees away from the refrigerating air supply pipe and 65 degrees away from the air guide pipe; when the temperature delta t is less than 11 ℃, the target angle of the air door is 30 degrees, and the controller controls the air door to be 30 degrees away from the refrigerating air supply pipe and 60 degrees away from the air guide pipe.
Further, after the damper is switched from the initial angle to the target angle, the method further includes steps S5 to S7:
s5, acquiring a second refrigerating air supply temperature acquired by the temperature sensor every second preset time period;
s6, calculating a second temperature difference between the second refrigerated air supply temperature and the reference temperature;
and S7, calculating the deflection angle of the air door according to the second temperature difference, and controlling the steering of the air door according to the deflection angle.
Illustratively, the second predetermined period of time is 2 minutes. After the air door is controlled to be switched to an angle once from an initial state, monitoring a second refrigerated air supply temperature acquired by the temperature sensor every minute, if the difference between the second refrigerated air supply temperature and the reference temperature is more than 3.5 ℃, controlling the air door to deflect towards the refrigerated air supply pipe by 5 degrees by the controller (namely the deflection angle is 5 degrees, the minimum temperature of the air door from a fresh air side during refrigeration is not less than 10 degrees), and if the difference between the second refrigerated air supply temperature and the reference temperature is 3.5 ℃ or less, controlling the air door to deflect towards the air guide pipe by 5 degrees by the controller.
Compared with the prior art, the refrigerator control method disclosed by the embodiment of the invention mixes the refrigerating return air and the fresh air by controlling the angle of the air door, improves the refrigerating air supply temperature, reduces the refrigerating temperature fluctuation, enables the refrigerating temperature to reach an approximately constant temperature state, and is beneficial to the preservation of food. In addition, part of the refrigerated return air is mixed with the fresh air, so that the refrigerated return air entering the evaporator side is reduced, the rise of the evaporation temperature is reduced, the temperature rise of the freezing temperature caused by the temperature rise is favorably reduced, and the fluctuation quantity of the freezing temperature is reduced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A refrigerator, characterized by comprising:
a box body, wherein a plurality of storerooms are arranged inside the box body;
the air door is arranged between the air guide pipe and the refrigerating air supply pipe in the refrigerator and used for adjusting the steering direction of the air door according to a control command of the controller;
the temperature sensor is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct;
the controller is configured to:
responding to a refrigerating and refrigerating instruction, and controlling the air door to be at a preset initial angle;
acquiring a first refrigerated air supply temperature acquired by the temperature sensor after a first preset time period;
calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature;
and calculating a target angle of the air door according to the first temperature difference so as to control the air door to be switched from the initial angle to the target angle.
2. The refrigerator of claim 1, wherein after the damper is switched from the initial angle to the target angle, the controller is further configured to:
acquiring a second refrigerated air supply temperature acquired by the temperature sensor every second preset time period;
calculating a second temperature difference between the second refrigerated supply air temperature and the reference temperature;
and calculating the deflection angle of the air door according to the second temperature difference so as to control the steering of the air door according to the deflection angle.
3. The refrigerator as claimed in claim 1, wherein when the damper is turned to the duct, the flow rate of the return air is decreased and the flow rate of the fresh air is increased; when the air door turns to the refrigeration air supply pipe, the return air flow is increased, and the fresh air flow is reduced;
the return air flow is the air quantity of hot return air in the refrigerating chamber after entering a return air inlet and then divided, and one part of the air quantity flows back to a return air outlet at the side of the freezing evaporator; the fresh air flow is the air quantity absorbed by the refrigerating air supply pipe from the evaporator; and the return air flow and the fresh air flow are mixed in the air guide pipe and then flow into the refrigeration air channel.
4. The refrigerator of claim 1 wherein the angle of the damper ranges from 0 ° to 90 °; the initial angle is the angle of the air door in the fully open state; wherein, the fully open state is that the air door is 90 degrees away from the refrigeration blast pipe and 0 degree away from the air guide pipe.
5. The refrigerator of claim 1, wherein said calculating a target angle for said damper based on said first temperature difference comprises:
comparing the first temperature difference with a preset temperature grade, and determining the temperature grade of the first temperature difference; each temperature grade is provided with a corresponding target angle;
and acquiring a corresponding target angle according to the temperature grade.
6. A refrigerator control method, comprising:
responding to a refrigerating and refrigerating instruction, and controlling the air door to be at a preset initial angle; the air door is arranged between the air guide pipe and the refrigerating air supply pipe in the refrigerator;
acquiring a first refrigerated air supply temperature acquired by a temperature sensor after a first preset time period; the temperature sensor is arranged in a refrigerating air duct of the refrigerator and used for detecting the refrigerating air supply temperature of the refrigerating air duct;
calculating a first temperature difference between the first refrigerated air supply temperature and a preset reference temperature;
and calculating a target angle of the air door according to the first temperature difference so as to control the air door to be switched from the initial angle to the target angle.
7. The method of controlling a refrigerator according to claim 6, wherein after the damper is switched from the initial angle to the target angle, the method further comprises:
acquiring a second refrigerated air supply temperature acquired by the temperature sensor every second preset time period;
calculating a second temperature difference between the second refrigerated supply air temperature and the reference temperature;
and calculating the deflection angle of the air door according to the second temperature difference so as to control the steering of the air door according to the deflection angle.
8. The control method of the refrigerator as claimed in claim 6, wherein when the damper turns to the air guide pipe, the return air flow rate is reduced, and the fresh air flow rate is increased; when the air door turns to the refrigeration air supply pipe, the return air flow is increased, and the fresh air flow is reduced;
the return air flow is the air quantity of hot return air in the refrigerating chamber after entering a return air inlet and then divided, and one part of the air quantity flows back to a return air outlet at the side of the freezing evaporator; the fresh air flow is the air quantity absorbed by the refrigerating air supply pipe from the evaporator; and the return air flow and the fresh air flow are mixed in the air guide pipe and then flow into the refrigeration air channel.
9. The control method of the refrigerator according to claim 6, wherein the angle of the damper ranges from 0 ° to 90 °; the initial angle is the angle of the air door in the fully open state; wherein, the fully open state is that the air door is 90 degrees away from the refrigeration blast pipe and 0 degree away from the air guide pipe.
10. The method of controlling a refrigerator according to claim 6, wherein said calculating a target angle of the damper according to the first temperature difference includes:
comparing the first temperature difference with a preset temperature grade, and determining the temperature grade of the first temperature difference; each temperature grade is provided with a corresponding target angle;
and acquiring a corresponding target angle according to the temperature grade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110205304.1A CN113915866A (en) | 2021-02-24 | 2021-02-24 | Refrigerator and control method thereof |
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| CN202110205304.1A CN113915866A (en) | 2021-02-24 | 2021-02-24 | Refrigerator and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674105A (en) * | 2022-03-09 | 2022-06-28 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN115164477A (en) * | 2022-07-05 | 2022-10-11 | 海信冰箱有限公司 | Refrigerator and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003287251A (en) * | 2002-03-28 | 2003-10-10 | Kumagai Gumi Co Ltd | Air supply device |
| CN103292442A (en) * | 2013-06-28 | 2013-09-11 | 南方英特空调有限公司 | Air conditioner cabinet passage for improving linearity of air outlet temperature of vehicular air conditioner |
| CN104633815A (en) * | 2015-02-02 | 2015-05-20 | 北京雅驿欣科技有限公司 | Air conditioner system for machine room and control method thereof |
| CN106515357A (en) * | 2015-09-15 | 2017-03-22 | 马勒国际有限公司 | Hvac module with anti-backflow control and method of operation |
| CN110595138A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air return device, refrigerator and refrigerator control method |
| CN112325542A (en) * | 2020-10-14 | 2021-02-05 | 珠海格力电器股份有限公司 | Refrigeration temperature control refrigerator, method, refrigerator, controller, terminal and storage medium |
-
2021
- 2021-02-24 CN CN202110205304.1A patent/CN113915866A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003287251A (en) * | 2002-03-28 | 2003-10-10 | Kumagai Gumi Co Ltd | Air supply device |
| CN103292442A (en) * | 2013-06-28 | 2013-09-11 | 南方英特空调有限公司 | Air conditioner cabinet passage for improving linearity of air outlet temperature of vehicular air conditioner |
| CN104633815A (en) * | 2015-02-02 | 2015-05-20 | 北京雅驿欣科技有限公司 | Air conditioner system for machine room and control method thereof |
| CN106515357A (en) * | 2015-09-15 | 2017-03-22 | 马勒国际有限公司 | Hvac module with anti-backflow control and method of operation |
| CN110595138A (en) * | 2019-10-08 | 2019-12-20 | 珠海格力电器股份有限公司 | Air return device, refrigerator and refrigerator control method |
| CN112325542A (en) * | 2020-10-14 | 2021-02-05 | 珠海格力电器股份有限公司 | Refrigeration temperature control refrigerator, method, refrigerator, controller, terminal and storage medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674105A (en) * | 2022-03-09 | 2022-06-28 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN114674105B (en) * | 2022-03-09 | 2024-04-05 | 海信冰箱有限公司 | Refrigerator and control method thereof |
| CN115164477A (en) * | 2022-07-05 | 2022-10-11 | 海信冰箱有限公司 | Refrigerator and control method thereof |
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Application publication date: 20220111 |