Summary of the invention
It is an object of the invention to solve that the air-cooled mechanical air door refrigerator freezing room temperature of single system can not adjust accurately to askTopic.
For achieving the above object, the present invention provides a kind of wind cooling refrigerator cryoprotection control method, using the first temperatureIt spends sensor and detects the first compartment temperature, second temperature sensor detects second compartment temperature, and compensating heating device is between firstRoom temperature adjustment；And including S1, detect the first compartment temperature < or≤the first preset value, and second temperature when the first temperature sensorWhen sensor detects second compartment temperature > or >=third preset value, compressor is out of service, compensating heating device work；S2,When the first temperature sensor detects the first compartment temperature > or >=the first preset value, compressor operation, compensating heating device stopsWork；S3, when the first temperature sensor detects the first compartment temperature < or≤the second preset value, execute one of following step: ifSecond temperature sensor detects second compartment temperature < or≤the 4th preset value, exits cryoprotection control, exits if not meetingCondition, compressor is out of service, and compensating heating device work repeats step S2.
Wherein, the first preset value > second preset value, third preset value > the 4th preset value.
As the further improvement of an embodiment of the present invention, compensating heating device keeps asynchronous with compressor.
As the further improvement of an embodiment of the present invention, after wind cooling refrigerator exits cryoprotection control, when the first temperatureDegree sensor is when detecting temperature of refrigerating chamber > or >=the first preset value, compressor operation, when the first temperature sensor detect it is coldWhen hiding room temperature < or≤the second preset value, compressor is out of service.
As the further improvement of an embodiment of the present invention, the first compartment is refrigerating chamber, and second compartment is freezing chamber.
As the further improvement of an embodiment of the present invention, when environment temperature < or≤five preset value, from compressorSecond booting moment, persistently judge whether starting step S1.
As the further improvement of an embodiment of the present invention, judge whether to execute each step by controller.
As the further improvement of an embodiment of the present invention, compensating heating device is compensation heater strip.
As the further improvement of an embodiment of the present invention, compensating heating device is controlled by temperature-adjusting potentiometer.
As the further improvement of an embodiment of the present invention, when compensating heating device work, the temperature-adjusting potentiometerIt is set to the prime time.
Another aspect of the present invention provides a kind of single system wind cooling refrigerator of mechanical air door, and the refrigerator is using any of the above-describedCryoprotection control method.
Compared with prior art, wind cooling refrigerator and its cryoprotection control method provided by the invention, detection freezing chamber are negativeVariation is carried, when freezing chamber heats up suddenly but refrigerating chamber is not up to starting point temperature, is heated up by compensation heater strip to refrigerating chamber,Promote refrigeration for refrigerator, freezer temperature is protected, freezer temperature can be precisely controlled.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneouslyThe present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionallyTransformation is included within the scope of protection of the present invention.
Wind cooling refrigerator of the invention is the air-cooled mechanical air door refrigerator of single system, including cabinet, door body, air duct, blower, compensationHeating device, compressor, evaporator, the first temperature sensor, second temperature sensor and controller.
Cabinet includes freezing chamber and refrigerating chamber.
Door body is pivotably mounted on cabinet to open or close freezing chamber and refrigerating chamber.
Air duct is located in cabinet and has the first wind passage mouth being connected to freezing chamber and the second air duct being connected to refrigerating chamberMouthful.
Blower is located in air duct, for the cold air of freezing chamber to be recycled in refrigerating chamber.
Compensating heating device is set in cabinet, for heating up to refrigerating chamber.Preferably, compensating heating device is that compensation addsHeated filament.
Compressor and evaporator are set in cabinet.
First temperature sensor and second temperature sensor are located in the box body.Wherein, the first temperature sensor is for detectingThe temperature of refrigerating chamber, second temperature sensor are used to detect the temperature of freezing chamber.
Controller is connected with compressor, blower, the first temperature sensor and second temperature sensor respectively.
With reference to Fig. 2, in normal mode, when the first temperature sensor detects temperature of refrigerating chamber > or >=the first preset valueWhen, controller controls compressor operation, and evaporator generates cold air as freezing chamber refrigeration, while blower is opened, by freezing chamberCold air is recycled to refrigeration room temperature lowering.
When the first temperature sensor detects temperature of refrigerating chamber < or≤the second preset value, controller control compressor stopsIt only runs, evaporator no longer freezes, while blower shuts down.
That is, in normal mode, only when temperature of refrigerating chamber is greater than or equal to the first preset value, compressor can just be transportedRow, refrigerator can just freeze.First preset value refrigerates starting point temperature, and the second preset value refrigerates Burnout temperature, and first is pre-If value is greater than the second preset value.
When the first temperature sensor detects temperature of refrigerating chamber < or≤the first preset value, and second temperature sensor detectionWhen to freezer temperature > or >=third preset value, into cryoprotection mode.At this point, controller control compressor is out of service,Compensating heating device is controlled by temperature-adjusting potentiometer simultaneously to start to work.Temperature-adjusting potentiometer is run in the prime time.Compressor and compensationHeating device keeps asynchronous.
It under cryoprotection mode, is heated by compensating heating device, refrigerating chamber is made to heat up.When refrigerating chamber is warming up to refrigerationWhen more than starting point temperature, compressor starts operation is that refrigerating chamber and freezing chamber cool down, and compensating heating device stops working, directlyTemperature of refrigerating chamber < is detected to the first temperature sensor or≤the second preset value, compressor are out of service.
When second temperature sensor detects freezer temperature < or≤four preset value or second temperature sensor is formerWhen barrier can not detect temperature, controller exits cryoprotection mode, restores normal mode.It is default that third preset value is greater than the 4thValue.
First, second preset value is much larger than third, the 4th preset value.
Further, when environment temperature < or≤five preset value, since second booting moment of compressor, controlDevice processed persistently carries out judging whether to enter or exiting cryoprotection mode.5th preset value is a higher temperature value.
Fig. 3 schematically shows the operation power P of temperature of refrigerating chamber R, freezer temperature F and refrigerator under cryoprotection modeVariation, PHeaterIt is the operation power of compensating heating device.In t0Moment, freezing chamber are put into a large amount of hot foods, temperature F suddenlyIt rises rapidly, controller enters cryoprotection mode, compensating heating device work, refrigerating chamber heating, as temperature of refrigerating chamber R at this timeWhen reaching refrigeration starting point, compressor starts operation is freezed to each compartment, until temperature of refrigerating chamber R reaches refrigeration Burnout.
Cryoprotection control method of the invention is applied to the single system air cooling type refrigerator of mechanical air door, and detection freezing chamber is negativeVariation is carried, when freezing chamber heats up suddenly but refrigerating chamber is not up to starting point temperature, is heated up by compensation heater strip to refrigerating chamber,Promote refrigeration for refrigerator, freezer temperature is protected, makes up this refrigerator switching on and shutting down and determined by temperature of refrigerating chamber, to freezing chamberThe inaccurate defect of temperature control.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes oneA independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will sayAs a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright bookWith the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specificallyProtection 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 inventionOr change should all be included in the protection scope of the present invention.