CN107339848A - A kind of defrosting method of refrigerator - Google Patents

A kind of defrosting method of refrigerator Download PDF

Info

Publication number
CN107339848A
CN107339848A CN201710517935.0A CN201710517935A CN107339848A CN 107339848 A CN107339848 A CN 107339848A CN 201710517935 A CN201710517935 A CN 201710517935A CN 107339848 A CN107339848 A CN 107339848A
Authority
CN
China
Prior art keywords
evaporator
defrost
value
heater strip
temperature
Prior art date
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.)
Granted
Application number
CN201710517935.0A
Other languages
Chinese (zh)
Other versions
CN107339848B (en
Inventor
苗建林
李春阳
何胜涛
王铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Co Ltd
Original Assignee
Qingdao Haier Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Co Ltd filed Critical Qingdao Haier Co Ltd
Priority to CN201710517935.0A priority Critical patent/CN107339848B/en
Publication of CN107339848A publication Critical patent/CN107339848A/en
Application granted granted Critical
Publication of CN107339848B publication Critical patent/CN107339848B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F25D21/002—Defroster control
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

The invention provides a kind of defrosting method of refrigerator.Defrosting method includes：Determine the initial value of the pressure differential at the lower end of evaporator and between upper end；Judge whether evaporator needs defrost；When evaporator needs defrost, whole heater strips are opened, so that each heater strip heating carries out defrost；Defrost temperature is detected, and part heater strip is closed according to defrost temperature；The pressure differential at the lower end of evaporator and between upper end is detected, obtains first pressure difference；When defrost temperature reaches the first preset temperature value, or when first pressure difference is less than or equal to initial value, remainder heater strip is closed, defrost is completed to close all heater strips.Can be according to the pressure differential on evaporator at the lower end of the frosting degree of diverse location, defrost temperature, evaporator and between upper end, the appropriate thermal discharge for reducing heater strip at diverse location, so that the evaporator of refrigerator can defrost on demand, both power consumption can be reduced, defrost duration is reduced, fresh-keeping effect can also be strengthened.

Description

A kind of defrosting method of refrigerator
Technical field
The present invention relates to refrigerating storing field, more particularly to a kind of defrosting method of refrigerator.
Background technology
Refrigerator is to maintain a kind of refrigeration plant of constant low temperature, and one kind makes food or other articles keep constant low temperature The product for civilian use of cold conditions.Air-cooled technology is by built-in hiding cooler (such as evaporator of coolant circulating system) to flowing through it Air freezed, force circulating cold air to flow by fan, so that cold air is uniformly distributed in each compartment of refrigerator, realize Refrigeration.When air passes through evaporator surface in refrigerator, the moisture in air can condense in evaporator surface, due to evaporator temperature Spend low, frost layer is formed after a period of time, causes evaporator heat transfer efficiency to decrease up to evaporator and is completely plugged and fails, drop Low refrigerator operational efficiency, it is necessary to carry out defrost after a period of time is run.
Existing defrost is generally provided with electric heater in base of evaporator, when evaporator surface frost layer reaches certain thickness, Refrigerator stops refrigeration, and heater is started working, heating and melting frost layer.During defrost is carried out to evaporator, the bottom of evaporator Portion is first heated, therefore the frost of base of evaporator is first begin to melt, and the frost in the middle part of finisher and top is just gradually melted, Therefore time for being heated of the heated device of base of evaporator is long, be very easy to cause the working of plastics of base of evaporator by There is the phenomenon of aged deterioration in heated time length.Frost on evaporator is in the process that gradual thawing from the bottom to top is water In to absorb substantial amounts of heat, and the thawing time is more very long, and there is serious heat waste phenomenon.
The content of the invention
Inventor thinks that the mode of present refrigerator inside defrost is essentially all to carry out defrost based on experience value, but refrigerator According to the change of normal service condition and environment, internal frosting velocity is different, and, because for evaporator in itself Relation of wind direction etc., evaporator diverse location frosting velocity are also different, are carried out in base of evaporator provided with electric heater Defrost, the frost on evaporator will absorb substantial amounts of heat during gradual thawing from the bottom to top is water, and when melting Between it is more very long, there is serious heat waste phenomenon.
Therefore, the present invention is intended to provide a kind of defrosting method for refrigerator, can make evaporator defrost on demand, on demand defrost Not only include carrying out defrost according to the frosting position of evaporator, in addition to apply adaptable heat according to each opening position frost layer amount Amount, it is extremely important to change the frost of evaporator diverse location on demand, so can both reduce power consumption, reduces defrost duration, also may be used To strengthen fresh-keeping effect.
Specifically, the invention provides a kind of defrosting method of refrigerator, wherein the refrigerator include evaporator and it is multiple plus Heated filament；Each heater strip is horizontally extending, and short transverse interval of multiple heater strips along the evaporator Set；Each heater strip is configured to directly or indirectly heat the evaporator；And the defrosting method includes：
Determine the initial value of the pressure differential at the lower end of the evaporator and between upper end；
Judge whether evaporator needs defrost；
When the evaporator needs defrost, all heater strips are opened, so that each heater strip heating is carried out Defrost；
Defrost temperature is detected, and the part heater strip is closed according to the defrost temperature；
The pressure differential at the lower end of the evaporator and between upper end is detected, obtains first pressure difference；
When the defrost temperature reaches the first preset temperature value, or in the first pressure difference less than or equal to described During initial value, heater strip described in closing remainder, defrost is completed to close all heater strips.
Alternatively, determined to detect the pressure differential at the lower end of the evaporator and between upper end according to the defrost temperature Opportunity.
Alternatively, it is described to be included according to the defrost temperature closing part heater strip：
The part heater strip is closed when the defrost temperature reaches the second preset temperature value；Second preset temperature Value is less than first preset temperature value.
Alternatively, examined when the defrost temperature reaches second preset temperature value and after closing the part heater strip Survey the pressure differential at the lower end of the evaporator and between upper end；And
Detected when the defrost temperature reaches three preset temperature values at the lower end of the evaporator and between upper end Pressure differential；3rd preset temperature value is less than first preset temperature value, and the 3rd preset temperature value is more than institute State the second preset temperature value.
Alternatively, examined when the defrost temperature reaches second preset temperature value and after closing the part heater strip Survey the pressure differential at the lower end of the evaporator and between upper end；And
After the defrost temperature reaches second preset temperature value, it is poor often to improve preset temperature in the defrost temperature During value, the pressure differential at the lower end of the evaporator and between upper end is detected.
Alternatively, the refrigerator includes blower fan and differential pressure pick-up, be configured with the blower fan drive air current flow with The differential pressure pick-up is set to detect the pressure differential at the lower end of the evaporator and between upper end.
Alternatively, during pressure differential at the lower end for detecting the evaporator and between upper end, the blower fan is made the Operated under one predeterminated voltage, the differential pressure pick-up exports multiple first detected values, first pressure in the first preset time Power difference is maximum first detected value.
Alternatively, the initial value at the lower end for determining the evaporator with the pressure differential between upper end includes：
When opening, the refrigerator first runs well preset duration the refrigerator, after make the blower fan in the second default electricity Pressure operating, the differential pressure pick-up export multiple second detected values in the second preset time；
The average value of multiple second detected values is calculated, and the initial value is the average value.
Alternatively, it is described to judge whether evaporator needs defrost to include：
Complete after initial value determination or every time after defrost in the 3rd preset time, the blower fan normal work, The differential pressure pick-up detects the pressure differential at the lower end of the evaporator and between upper end, obtains second pressure difference；
If the second pressure difference is more than or equal to the initial value, and judges that the evaporator needs defrost；Otherwise After initial value determination or in three preset time after completing defrost every time, make the blower fan under the 3rd predeterminated voltage Operating, the differential pressure pick-up export multiple 3rd detected values in the 4th preset time, and make the 3rd detection of maximum It is worth for the 3rd pressure difference value；
If the 3rd pressure difference value is more than or equal to the initial value, and judges that the evaporator needs defrost；Otherwise Make the preset time of blower fan normal work the 5th, the blower fan is operated under the 3rd predeterminated voltage described in Posterior circle entrance, The differential pressure pick-up exports multiple 3rd detected values in the 4th preset time, and makes the 3rd detected value of maximum be the Three pressure difference values；5th preset time is less than the 3rd preset time.
Alternatively, when the evaporator needs defrost, also close at least the inlet air door of the storing compartment of the refrigerator Close；
The refrigerator also includes temperature sensor, and the temperature sensor is arranged at the top of the evaporator, is configured to Detect the defrost temperature；And
Second preset temperature value is 3.6 DEG C to 4.4 DEG C；
First preset temperature value is 6.6 DEG C to 7.4 DEG C；
Heater strip described in remainder is a heater strip of bottom；
The part heater strip is the whole heater strip above a heater strip of bottom.
The defrosting method of the refrigerator of the present invention can be according to the frosting degree of diverse location, defrost temperature, evaporator on evaporator Lower end at and upper end between pressure differential, the appropriate thermal discharge for reducing heater strip at diverse location, so that the evaporation of refrigerator Device can defrost on demand, it is extremely important to change the frost of evaporator diverse location on demand, so can both reduce power consumption, reduces defrost Duration, fresh-keeping effect can also be strengthened.
Further, refrigerator of the invention can judge to evaporate according to the pressure differential between at the lower end of evaporator and upper end The frosting degree of device and then judge whether evaporator needs defrost, quick and precisely, accurately and effectively to enter defrosting operation, so as to The frost adhered on evaporator can be melted in time, defrosting operation need not carried out during defrost by avoiding, so as to save electricity Energy.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter. Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the schematic diagram of refrigerator according to an embodiment of the invention；
Fig. 2 is the schematic local structural graph of refrigerator according to an embodiment of the invention；
Fig. 3 is the schematic side elevation of structure shown in Fig. 2；
Fig. 4 is the indicative flowchart of the defrosting method of refrigerator according to an embodiment of the invention.
Embodiment
Fig. 1 is the schematic diagram of refrigerator according to an embodiment of the invention；Fig. 2 is according to one implementation of the present invention The schematic local structural graph of the refrigerator of example；Fig. 3 is the schematic side elevation of structure shown in Fig. 2.As shown in Figure 1, Figure 2 and Figure 3, The embodiments of the invention provide a kind of refrigerator.The refrigerator may include casing 10, door body, refrigeration system, blower fan, the detection of frosting situation Device, defrosting heater and temperature sensor.
There are multiple storing compartments in casing 10.Storing compartment is used to store food.Multiple storages in the embodiment of the present invention Thing compartment may include the refrigerating chamber 11 of often storage vegetables, and its temperature-control range is typically at -5 DEG C to 7 DEG C.Multiple storing compartments may be used also Including refrigerating chamber 12, temperature-changing chamber etc..Door body can be multiple, and each door body is configured to controllably to open or close between a storing Room.Further, casing 10 also has compressor bin, cooling chamber, and the ducting system of connection storing compartment and cooling chamber.It is cold But room can be at the rear side of refrigerating chamber 12.In Fig. 1, the air duct cover board between cooling chamber and refrigerating chamber 12 is not shown.
Refrigerant system configuration is into providing cold to reduce the indoor temperature of storing.Specifically, refrigeration system can be compression Formula refrigeration system, it includes compressor, condenser, throttling arrangement and evaporator 20 etc..Compressor may be disposed in compressor bin. Evaporator 20 may be disposed in cooling chamber, be configured with entering the gas temperature in the refrigerant reduction cooling chamber in it, with warp The temperature for making storing indoor by ducting system is maintained in preset temperature or preset temperature range.Blower fan, which can be configured to, to be promoted Air-flow flows to storing compartment from cooling chamber, and flows back to cooling chamber from storing compartment, and makes air-flow from evaporator 20 in cooling chamber Lower end to upper end flow.
Frosting situation detection means may be disposed in cooling chamber, for making detection of the refrigerator according to frosting situation detection means As a result judge whether refrigerator needs defrost.Frosting situation detection means may include differential pressure pick-up 60, detect under evaporator 20 Pressure differential at end and between upper end, so that refrigerator determines the frost thickness on evaporator 20 according to pressure differential, and then can be true The fixed opportunity for entering defrosting or terminating defrosting.In refrigerator, air-flow flows typically from the lower end of evaporator to upper end.Under evaporator The windage situation of the size reactive evaporation device upper and lower ends of pressure differential at end and between upper end, pressure differential is more big, shows to steam Send out that the windage of device is bigger, then frost layer that can be on baudelot evaporator 20 is thicker, bigger to the resistance of wind.
Defrosting heater can have multiple heater strips 40.Each heater strip 40 can be horizontally extending, and it is multiple plus Short transverse of the heated filament 40 along evaporator 20 is arranged at intervals, and each heater strip 40 is configured to directly or indirectly heating evaporation device 20, so that multiple heater strips 40 can heat in multiple different height opening positions to evaporator 20.Further, defrosting is heated Device may also include heat-conducting plate 30.Heat-conducting plate 30 is arranged at the side of evaporator 20, and thermally contacts and (connect with evaporator 20 Touch is thermally coupled).Each heater strip 40 thermally contacts with heat-conducting plate 30.Heat-conducting plate 30 can be used for making heat spread at heater strip 40 Onto evaporator 20, defrosting efficiency is improved.In some preferred embodiments of the present invention, heat-conducting plate 30 is arranged at multiple heating Between silk 40 and evaporator 20, by heat transfer caused by each heater strip 40 to evaporator 20.It is preferable to carry out at other In example, multiple heater strips 40 are arranged in heat-conducting plate 30.
Temperature sensor is preferably provided at the top of evaporator 20, is configured to detect the defrost temperature of evaporator 20. In some alternate embodiments, temperature sensor may be disposed on evaporator.
Fig. 4 is the indicative flowchart of the defrosting method of refrigerator according to an embodiment of the invention.It is as shown in figure 4, special Not, the embodiment of the present invention additionally provides a kind of defrosting method of refrigerator.The highest heating power of every heater strip 40 is preferably Equally, i.e., using the multiple heater strips 40 of identical.Defrosting method may include：
Determine the initial value of the pressure differential at the lower end of evaporator 20 and between upper end.
Judge whether evaporator 20 needs defrost.
When evaporator 20 needs defrost, whole heater strips 40 are opened, so that each heating of heater strip 40 carries out defrost.Enter One step, when evaporator 20 needs defrost close also at least the inlet air door of the storing compartment of refrigerator.
Defrost temperature is detected, and part heater strip 40 is closed according to defrost temperature.
The pressure differential at the lower end of evaporator 20 and between upper end is detected, obtains first pressure difference.
When defrost temperature reaches the first preset temperature value, or when first pressure difference is less than or equal to initial value, close Remainder heater strip 40 is closed, defrost is completed to close all heater strips 40.Temperature sensor is preferably provided at steaming Send out the top of device 20；First preset temperature value is preferably 6.6 DEG C to 7.4 DEG C, such as 6.9 DEG C, 7 DEG C etc..
In this embodiment, evaporation is faster than according to the rule of the frosting of evaporator 20, the general bottom frosting velocity of evaporator 20 The upper end of device 20, in defrost, some heater strips 40 suitably can be first closed, so as to which defrost on demand can be realized, so that evaporator is relatively thin The frost layer in place obtains appropriate heat, saves electric energy.That is when this heating defrost mode can effectively reduce defrost Between, and during defrost, power consumption needed for whole defrost is reduced, and internal temperature of refrigerator fluctuation can be effectively reduced.
The present invention some preferred embodiments in, can according to defrost temperature determine detection evaporator 20 lower end at On the opportunity of pressure differential between upper end, preferably to determine to terminate the opportunity of defrost, shorten defrost duration, so as to improve refrigerator Efficiency, save the energy.
Specifically, in some specific embodiments of the present invention, closing part heater strip 40 according to defrost temperature can wrap Include：Part heater strip 40 is closed when defrost temperature reaches the second preset temperature value；It is default that second preset temperature value is less than first Temperature value.Second preset temperature value can be 3.6 DEG C to 4.4 DEG C, such as 3.9 DEG C, 4 DEG C etc..Preferably, remainder heater strip 40 For a heater strip 40 of bottom.Part heater strip 40 is whole heater strips 40 above a heater strip 40 for bottom. Certainly, in some alternate embodiments, remainder heater strip 40 is at least two heater strips 40 of bottom.Heat part Silk 40 is whole heater strips 40 of at least two tops of heater strips 40 of bottom.
Further, can be when defrost temperature reaches the second preset temperature value and closing in some specifically embodiment The pressure differential at the lower end of evaporator 20 and between upper end is detected after part heater strip 40.And reach in defrost temperature The pressure differential at the lower end of evaporator 20 and between upper end is detected during three preset temperature values；3rd preset temperature value is less than first Preset temperature value, and the 3rd preset temperature value is more than the second preset temperature value.3rd preset temperature value can be 5 DEG C to 6 DEG C, such as 5 DEG C, 5.2 DEG C, 5.5 DEG C, 5.6 DEG C, 6 DEG C etc..
In other specifically embodiment, can when defrost temperature reaches the second preset temperature value and close part heat The pressure differential at the lower end of evaporator 20 and between upper end is detected after silk 40.And when defrost temperature reaches the second preset temperature After value, when defrost temperature often improves preset temperature difference, the pressure differential at the lower end of evaporator 20 and between upper end is detected. Preset temperature difference can be 0.3 to 0.8 DEG C.For example, the second preset temperature value can be 4 DEG C, preset temperature difference is 0.5 DEG C, then The pressure differential at the lower end of evaporator 20 and between upper end can be detected at 4.5 DEG C, 5 DEG C, 5.5 DEG C etc..
Preferably, detect evaporator 20 lower end at upper end between pressure differential when, make blower fan first preset Operated under voltage, differential pressure pick-up exports multiple first detected values in the first preset time, and first pressure difference is maximum First detected value.First predeterminated voltage can be 11V to 13V, such as 11V, 12V, 13V.First preset time can be for 1.5s extremely 2.5s, such as 1.5s, 1.8s, 2s, 2.2s etc..
In some embodiments of the invention, determine initial with the pressure differential between upper end at the lower end of evaporator 20 Value may include：Refrigerator open when, make refrigerator normal operation preset duration, after blower fan is operated under the second predeterminated voltage, it is poor Pressure sensor detects the pressure differential at the lower end of evaporator 20 and between upper end, output multiple second in the second preset time Detected value.The average value of multiple second detected values is calculated, and initial value is the average value of multiple second detected values.Preset duration can For 2min to 6min, such as 3min, 4min, 5min etc..Second predeterminated voltage can be 11V to 13V, such as 11V, 12V, 13V.The Two preset times can be 50s to 80s, preferably 60s, 70s etc..Further, the storing of refrigerator also can be at least made in detection The inlet air door of compartment is closed.In some alternate embodiments, when refrigerator is opened, it can directly make blower fan in the second default electricity Pressure operating, does not make refrigerator first run well preset duration.In other alternate embodiments, initial value can be preset value, Refrigerator is directly set when developing.
In some embodiments of the invention, it is preferred to use the testing result of differential pressure pick-up 60 is to judge evaporator 20 It is no to need defrost.Specifically, judge whether evaporator 20 needs defrost to include：
Complete after initial value determination or every time after defrost in the 3rd preset time, blower fan normal work (is also just meaned Refrigerator normal work), differential pressure pick-up detects the pressure differential at the lower end of evaporator 20 and between upper end, obtains the second pressure Power difference.3rd preset time can be 3H to 5H, such as can be 3.8H, 4H, 4.5H etc..
If second pressure difference is more than or equal to initial value, and judges that evaporator 20 needs defrost；Otherwise it is true in initial value After fixed or in three preset time after completing defrost every time, blower fan is set to be operated under the 3rd predeterminated voltage, differential pressure pick-up exists Multiple 3rd detected values of output in 4th preset time, and make the 3rd maximum detected value be the 3rd pressure difference value.3rd is default Voltage can be 11V to 13V, such as 11V, 12V, 13V.4th preset time can be 8s to 12s, preferably 9s, 10s etc..
If the 3rd pressure difference value is more than or equal to initial value, and judges that evaporator 20 needs defrost；Otherwise make blower fan normal Work the 5th preset time, and Posterior circle, which enters, makes blower fan be operated under the 3rd predeterminated voltage, and differential pressure pick-up is when the 4th is default Interior multiple 3rd detected values of output, and make the 3rd maximum detected value be the 3rd pressure difference value.5th preset time can be 0.6H is to 1.5H, such as can be 0.8H, 1H, 1.25H etc..
In some alternate embodiments of the present invention, also can according to the continuous operating time of the compressor of refrigerator and/or The total run time of compressor judges whether evaporator 20 needs defrost.Also can be judged according to the temperature that temperature sensor detects Whether evaporator 20 needs defrost.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized It is set to and covers other all these variations or modifications.

Claims (10)

  1. A kind of 1. defrosting method of refrigerator, wherein the refrigerator includes evaporator and multiple heater strips；Each heater strip edge Horizontal direction extends, and short transverse of multiple heater strips along the evaporator is arranged at intervals；Each heater strip is matched somebody with somebody It is set to and directly or indirectly heats the evaporator；And the defrosting method includes：
    Determine the initial value of the pressure differential at the lower end of the evaporator and between upper end；
    Judge whether the evaporator needs defrost；
    When the evaporator needs defrost, all heater strips are opened, so that each heater strip heating carries out defrost；
    Defrost temperature is detected, and the part heater strip is closed according to the defrost temperature；
    The pressure differential at the lower end of the evaporator and between upper end is detected, obtains first pressure difference；
    It is initial less than or equal to described when the defrost temperature reaches the first preset temperature value, or in the first pressure difference During value, heater strip described in closing remainder, defrost is completed to close all heater strips.
  2. 2. defrosting method according to claim 1, wherein
    The opportunity of the pressure differential at the lower end of the detection evaporator and between upper end is determined according to the defrost temperature.
  3. 3. defrosting method according to claim 2, wherein
    It is described to be included according to the defrost temperature closing part heater strip：
    The part heater strip is closed when the defrost temperature reaches the second preset temperature value；Second preset temperature value is small In first preset temperature value.
  4. 4. defrosting method according to claim 3, wherein
    The evaporation is detected when the defrost temperature reaches second preset temperature value and after closing the part heater strip Pressure differential at the lower end of device and between upper end；And
    The pressure at the lower end of the evaporator and between upper end is detected when the defrost temperature reaches three preset temperature values Power is poor；3rd preset temperature value is less than first preset temperature value, and the 3rd preset temperature value is more than described the Two preset temperature values.
  5. 5. defrosting method according to claim 3, wherein
    The evaporation is detected when the defrost temperature reaches second preset temperature value and after closing the part heater strip Pressure differential at the lower end of device and between upper end；And
    After the defrost temperature reaches second preset temperature value, preset temperature difference is often improved in the defrost temperature When, detect the pressure differential at the lower end of the evaporator and between upper end.
  6. 6. defrosting method according to claim 1, wherein
    The refrigerator includes blower fan and differential pressure pick-up, is configured with the blower fan and drives air current flow so that the differential pressure passes Sensor detects the pressure differential at the lower end of the evaporator and between upper end.
  7. 7. defrosting method according to claim 6, wherein
    During pressure differential at the lower end for detecting the evaporator and between upper end, make the blower fan under the first predeterminated voltage Operating, the differential pressure pick-up export multiple first detected values in the first preset time, and the first pressure difference is maximum First detected value.
  8. 8. defrosting method according to claim 6, wherein
    Initial value at the lower end for determining the evaporator with the pressure differential between upper end includes：
    When opening, the refrigerator first runs well preset duration the refrigerator, after make the blower fan under the second predeterminated voltage Operating, the differential pressure pick-up export multiple second detected values in the second preset time；
    The average value of multiple second detected values is calculated, and the initial value is the average value.
  9. 9. defrosting method according to claim 8, wherein
    It is described to judge whether evaporator needs defrost to include：
    After initial value determination or complete every time after defrost in the 3rd preset time, the blower fan normal work is described Differential pressure pick-up detects the pressure differential at the lower end of the evaporator and between upper end, obtains second pressure difference；
    If the second pressure difference is more than or equal to the initial value, and judges that the evaporator needs defrost；Otherwise in institute State after initial value determines or in three preset time after completing defrost every time, the blower fan is transported under the 3rd predeterminated voltage Turn, the differential pressure pick-up exports multiple 3rd detected values in the 4th preset time, and makes the 3rd detected value of maximum For the 3rd pressure difference value；
    If the 3rd pressure difference value is more than or equal to the initial value, and judges that the evaporator needs defrost；Otherwise institute is made The preset time of blower fan normal work the 5th is stated, the blower fan is operated under the 3rd predeterminated voltage described in Posterior circle entrance, it is described Differential pressure pick-up exports multiple 3rd detected values in the 4th preset time, and the 3rd detected value of maximum is pressed for the 3rd Power difference；5th preset time is less than the 3rd preset time.
  10. 10. defrosting method according to claim 3, wherein
    When the evaporator needs defrost, also close at least the inlet air door of the storing compartment of the refrigerator；
    The refrigerator also includes temperature sensor, and the temperature sensor is arranged at the top of the evaporator, is configured to detect The defrost temperature；And
    Second preset temperature value is 3.6 DEG C to 4.4 DEG C；
    First preset temperature value is 6.6 DEG C to 7.4 DEG C；
    Heater strip described in remainder is a heater strip of bottom；
    The part heater strip is the whole heater strip above a heater strip of bottom.
CN201710517935.0A 2017-06-29 2017-06-29 Defrosting method for refrigerator Active CN107339848B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710517935.0A CN107339848B (en) 2017-06-29 2017-06-29 Defrosting method for refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710517935.0A CN107339848B (en) 2017-06-29 2017-06-29 Defrosting method for refrigerator

Publications (2)

Publication Number Publication Date
CN107339848A true CN107339848A (en) 2017-11-10
CN107339848B CN107339848B (en) 2019-12-10

Family

ID=60218201

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710517935.0A Active CN107339848B (en) 2017-06-29 2017-06-29 Defrosting method for refrigerator

Country Status (1)

Country Link
CN (1) CN107339848B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115265073A (en) * 2022-08-26 2022-11-01 珠海格力电器股份有限公司 Defrosting structure, refrigerator and defrosting control method of refrigerator
CN115875926A (en) * 2021-08-27 2023-03-31 合肥美的电冰箱有限公司 Refrigeration equipment and defrosting method and device thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006300440A (en) * 2005-04-22 2006-11-02 Sharp Corp Refrigerator
CN2921730Y (en) * 2005-11-30 2007-07-11 东莞市广大制冷有限公司 Evaporator with defrosting device
CN101738054A (en) * 2009-12-30 2010-06-16 天津大学 Method for defrosting based on by-pass circulating defrosting structure of refrigerator
CN105783387A (en) * 2016-04-29 2016-07-20 合肥美的电冰箱有限公司 Defrosting control method, defrosting control device and refrigerator
CN106595215A (en) * 2016-11-11 2017-04-26 青岛海尔股份有限公司 Defrosting control method and device of air-cooled refrigerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006300440A (en) * 2005-04-22 2006-11-02 Sharp Corp Refrigerator
CN2921730Y (en) * 2005-11-30 2007-07-11 东莞市广大制冷有限公司 Evaporator with defrosting device
CN101738054A (en) * 2009-12-30 2010-06-16 天津大学 Method for defrosting based on by-pass circulating defrosting structure of refrigerator
CN105783387A (en) * 2016-04-29 2016-07-20 合肥美的电冰箱有限公司 Defrosting control method, defrosting control device and refrigerator
CN106595215A (en) * 2016-11-11 2017-04-26 青岛海尔股份有限公司 Defrosting control method and device of air-cooled refrigerator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115875926A (en) * 2021-08-27 2023-03-31 合肥美的电冰箱有限公司 Refrigeration equipment and defrosting method and device thereof
CN115875926B (en) * 2021-08-27 2023-12-01 合肥美的电冰箱有限公司 Refrigerating equipment and defrosting method and device thereof
CN115265073A (en) * 2022-08-26 2022-11-01 珠海格力电器股份有限公司 Defrosting structure, refrigerator and defrosting control method of refrigerator

Also Published As

Publication number Publication date
CN107339848B (en) 2019-12-10

Similar Documents

Publication Publication Date Title
CN107421200B (en) A kind of wind cooling refrigerator defrosting control method
CN105074369B (en) Refrigerator
CN106595215B (en) The defrosting control method and device of wind cooling refrigerator
CN106196826B (en) Wind cooling refrigerator and its dehumanization method
CN107044756B (en) The anti-freeze control method of air door and refrigerator
CN101937247B (en) Air cooling refrigerator as well as moisture-preservation control method and system thereof
CN107270632A (en) A kind of defrosting method of refrigerator
CN106196843A (en) Wind cooling refrigerator and dehumanization method thereof
CN204730374U (en) A kind of accumulating type air-conditioning system
CN107192206A (en) A kind of defrosting method of refrigerator
CN102564051B (en) Refrigerator
CN106802051A (en) Refrigerating device and its condensation prevention control method
CN106989557A (en) A kind of wind cooling refrigerator control method
CN207247632U (en) Evaporator assemblies and the refrigerator with the evaporator assemblies
KR101269068B1 (en) Controll method middle and small sized cold storage room
CN105352262B (en) Wind cooling refrigerator and its cryoprotection control method
AU2015410544B2 (en) Refrigerator
CN107339848A (en) A kind of defrosting method of refrigerator
CN107255387A (en) A kind of defrosting method of refrigerator
CN103032938B (en) Air conditioning device and control method thereof
CN107270631A (en) A kind of defrosting method of refrigerator
CN102287982A (en) Defrosting refrigerator and control method thereof
CN207095132U (en) Refrigerator
KR101481489B1 (en) Control Device and Method for Defrosting of Refrigerator
CN113983728A (en) Defrosting method, device and equipment for evaporator and temperature adjusting system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant