CN109000399A - Defreezing method and refrigerator for thawing apparatus - Google Patents
Defreezing method and refrigerator for thawing apparatus Download PDFInfo
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- CN109000399A CN109000399A CN201710418971.1A CN201710418971A CN109000399A CN 109000399 A CN109000399 A CN 109000399A CN 201710418971 A CN201710418971 A CN 201710418971A CN 109000399 A CN109000399 A CN 109000399A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/46—Dielectric heating
- H05B6/62—Apparatus for specific applications
-
- 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
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/07—Thawing subsequent to freezing
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
- A23L3/365—Thawing subsequent to freezing
-
- 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
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Electromagnetism (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Electric Ovens (AREA)
Abstract
The present invention provides a kind of defreezing methods for thawing apparatus.Thawing apparatus include define cylinder for placing object to be processed and the defrosting chamber with forward opening, be set at the forward opening of defrosting chamber for being opened and closed the device door body of defrosting chamber, module occurs for radio frequency, the infrared sensor that horizontally is arranged at the roof and bottom wall of defrosting chamber respectively and electric pole plate and lower electrode plate and the size for being used to sense object to be processed being set on the inner wall of defrosting chamber that module be electrically connected occur respectively with radio frequency；Defreezing method includes: the size that infrared sensor senses object to be processed；Its volume is calculated according to the size of object to be processed；Obtain the volume of object to be processed；Judge operating power when its work is started to work and determined to module whether occurs for radio frequency.The certain defreezing method of middle defrosting power compared with the prior art, defreezing method of the invention has better defrosting effect, and avoids unnecessary energy waste.
Description
Technical field
The present invention relates to defrosting fields, more particularly to a kind of method and refrigerator for thawing apparatus.
Background technique
During freezing, the quality of food is kept food, however the food freezed is before processing or is edible
It needs to thaw.For the ease of user's freezing and thawed foodstuff, the prior art in refrigerator generally by being arranged heating device or micro-
Wave apparatus carrys out thawed foodstuff.
However, generally requiring longer thawing time by heating device come thawed foodstuff, and thawing time and temperature are not
It easily grasps, be easy to cause moisture evaporation and the juice loss of food, the quality of food is made to incur loss；It is solved by microwave device
Freeze food, speed is fast, high-efficient, so the nutrient component damages of food are very low, but due to microwave to water and ice penetrate and
Absorption has difference, and the inner material of food is unevenly distributed, and the energy that the region melted absorbs is more, and it is uneven to be also easy to produce defrosting
The problem of uniform hot-spot.Comprehensively consider, needs one kind that there is high defrosting efficiency in design, thaws uniformly and can guarantee and eat
The defreezing method and refrigerator for thawing apparatus of article matter.
Summary of the invention
One purpose of first aspect present invention be to provide for it is a kind of with preferable defrosting effect for thawing apparatus
Defreezing method.
First aspect present invention one is further objective is that the defrosting efficiency of refrigerator will be improved.
First aspect present invention another further objective is that object to be processed to be avoided excessively to be thawed.
One purpose of second aspect of the present invention is to provide for a kind of refrigerator.
Particularly, according to the first aspect of the invention, a kind of defreezing method for thawing apparatus, the defrosting are provided
Device include define for place object to be processed and with forward opening defrosting chamber cylinder, be set to the defrosting chamber
The device door body for being opened and closed the defrosting chamber at the forward opening of room, radio frequency occur module, horizontally are arranged at respectively
Occur at the roof and bottom wall of the defrosting chamber and respectively with the radio frequency electric pole plate that module is electrically connected and lower electrode plate,
And it is set to the infrared sensor of the volume for sensing the object to be processed on the inner wall of the defrosting chamber；Institute
Stating defreezing method includes:
The infrared sensor senses the size of the object to be processed；
Its volume is calculated according to the size of the object to be processed；
Obtain the volume of the object to be processed；
Judge operating power when its work is started to work and determined to module whether occurs for the radio frequency.
Optionally, wherein judging that the radio frequency occurs that the step of whether module works includes:
If the volume of the object to be processed is in a preset range, the radio frequency occurs module and starts to work；
If the volume of the object to be processed is not in the preset range, the radio frequency occurs module and does not work.
Optionally, the defreezing method for thawing apparatus further include:
If the volume of the object to be processed is more than or equal to one first volume threshold and less than one second volume threshold, described
The operating power that module occurs for radio frequency is the 75~95% of rated power；
If the volume of the object to be processed is more than or equal to second volume threshold and is less than or equal to a third volume threshold value,
It is rated power that then the operating power of module, which occurs, for the radio frequency；Wherein
First volume threshold is more than or equal to zero, and first volume threshold is less than second volume threshold, described
Second volume threshold is less than the third volume threshold value, and the preset range is to be less than more than or equal to first volume threshold
Equal to third preset vol amount threshold value.
Optionally, the defreezing method for thawing apparatus further include:
If the volume of the object to be processed is less than first volume threshold, issues vision and/or audible signal is reminded
User is unloaded；
If the volume of the object to be processed is greater than the third volume threshold value, issues vision and/or audible signal is reminded
User's overload.
Optionally, the thawing apparatus further includes detection module, and the detection module is set as detection and connects the radio frequency
The incidence wave signal and reflection wave signal of the electrical wiring of module and the electric pole plate occurs；The defreezing method includes:
The radio frequency occur module it is in running order when, detect the incidence wave signal and back wave letter of the electrical wiring
Number；
Obtain the voltage and current of the incidence wave signal and the voltage and current of the reflection wave signal；
Calculate the load impedance that module occurs for the radio frequency.
Optionally, the thawing apparatus further includes a load compensation module, the load compensation module include be set as with
The motor of the object to be processed concatenated compensating unit and the impedance for increasing or reducing the compensating unit；The defrosting side
Method further include:
Obtain the load impedance that module occurs for the radio frequency；
Judge that the load impedance of module occurs for the radio frequency and whether the difference of output impedance is more than or equal to one first impedance threshold
It is worth and is less than or equal to one second impedance threshold；Wherein first impedance threshold is less than second impedance threshold；
If the load impedance of module occurs for the radio frequency and the difference of output impedance is less than first impedance threshold, increase
The impedance of the compensating unit；
If the load impedance of module occurs for the radio frequency and the difference of output impedance is greater than second impedance threshold, reduce
The impedance of the compensating unit；
If the radio frequency occur module load impedance and output impedance difference more than or equal to first impedance threshold and
Less than or equal to second impedance threshold, then the load compensation module does not work.
Optionally, the defreezing method for thawing apparatus further include:
Obtain the load impedance that module occurs for the radio frequency；
Calculate the rate of change of the dielectric constant of the object to be processed；
Judge the defrosting progress of the object to be processed.
Optionally, the step of judging the defrosting progress of the object to be processed include:
Obtain the rate of change of the dielectric constant of the object to be processed；
Judge whether the rate of change of the dielectric coefficient of the object to be processed is more than or equal to first rate threshold value；
If so, the operating power that module occurs for the radio frequency reduces by 30%~40%；And/or
Obtain the rate of change of the dielectric constant of the object to be processed；
Judge whether the rate of change of the dielectric coefficient of the object to be processed drops below or equal to the second rate-valve value；
If so, module from service occurs for the radio frequency.
According to the second aspect of the invention, provide a kind of refrigerator, including define at least one accommodation space cabinet,
The thawing apparatus for being respectively used to the compartment door body for being opened and closed the accommodation space and being set to an accommodation space, the refrigerator
It further include the defreezing method for thawing apparatus of any description above.
Optionally, the refrigerator further includes the switch that thaws, and the defrosting switch is set in any compartment door body, is used
In the start and stop of control thaw routine；Wherein the infrared sensor is configured that
When described device door body is closed and defrosting switch is opened, start to work；
When module, which occurs, for the radio frequency starts to work, stop working.
The certain defreezing method of middle defrosting power, the present invention are judged by the volume of object to be processed compared with the prior art
Operating power when whether module starts to work and determine its work occurs for radio frequency, and targetedly thaw object to be processed, has
Better defrosting effect, and avoid unnecessary energy waste.
Further, it when the present invention is too small by the volume in object to be processed, reminds user unloaded, it is existing to avoid " sky is burnt "
The generation of elephant, namely be that of avoiding radio frequency and work when module zero load occurs, the failure rate of thawing apparatus is reduced, and avoid not
Desirably energy consumption generates.When the volume of object to be processed is excessive, user's overload is reminded, is avoided due to object internal-external temperature difference to be processed
Excessive (be greater than 3 DEG C) and generation the phenomenon that excessively reduce its quality.
Further, the present invention makes radio frequency that the load impedance of module and the difference of output impedance occur by load compensation module
Within a preset range (be more than or equal to one first impedance threshold and be less than or equal to one second impedance threshold), further improve
The defrosting efficiency of object to be processed.
Further, the present invention calculates the rate of change of the dielectric coefficient of object to be processed by detection module, come judge to
The defrosting progress of processed material.Before making the present invention, those skilled in the art are it is believed that the temperature when object to be processed is higher
When (temperature of object i.e. to be processed is more than or equal to -7 DEG C), fuel factor can significantly decay, thus object to be processed will not excessively be thawed.
However actual conditions are really not so, usual radio frequency defrosting power is larger, be greater than 100W, when object to be processed self-temperature
When higher, object to be processed is easily excessively thawed.Present inventor creatively recognizes, when object to be processed temperature
When higher, the operating power that module occurs for radio frequency is reduced by 30~40%, object to be processed can be effectively prevented and excessively thawed.Into
One step, whether the present invention judges to thaw by the rate of change of the dielectric coefficient of object to be processed completes, compared with the prior art
In judge to thaw by sensing the temperature of object to be processed and whether complete, it is more accurate to judge, can further prevent object to be processed
It is excessively thawed, and test shows the object to be processed to be thawed by thawing apparatus of the invention, the temperature thawed when completing is general
It is -4~-2 DEG C, can avoid thawing when object to be processed is meat and generating watery blood.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram of thawing apparatus according to an embodiment of the invention；
Fig. 2 is the schematic cross sectional views of the cutting line A-A interception in Fig. 1；
Fig. 3 is the schematic diagram for the load impedance that module occurs for adjusting radio frequency according to an embodiment of the invention；
Fig. 4 is the schematic diagram of thawing apparatus in Fig. 1, and wherein the device door body of the thawing apparatus is removed, to show
The internal structure of cylinder out；
Fig. 5 is the rate of change curve graph of the dielectric coefficient of object to be processed according to an embodiment of the invention；
Fig. 6 is the flow chart of the defreezing method according to an embodiment of the invention for thawing apparatus；
Fig. 7 is the schematic diagram of refrigerator according to an embodiment of the invention, wherein all outer door body of the refrigerator
It is all removed, intracorporal cell structure of the case to show refrigerator；
Fig. 8 is the schematic cross sectional views of refrigerator shown in Fig. 7；
Fig. 9 is the schematic diagram of Tu8Zhong compressor room；
Figure 10 is the detail flowchart of the defreezing method according to an embodiment of the invention for refrigerator.
Specific embodiment
Fig. 1 is the schematic diagram of thawing apparatus 100 according to an embodiment of the invention.Referring to Fig. 1, thawing apparatus
100 may include cylinder 110, device door body 120, radio frequency generation module 130 and electric pole plate 140a and lower electrode plate 140b.
Cylinder 110 may include top plate and bottom plate, back plate and two opposite lateral side plates, in can define with forward opening
Defrosting chamber 114, defrosting chamber 114 is for placing object to be processed.Device door body 120 may be disposed at the forward direction of defrosting chamber 114
Opening is used to open or closes defrosting chamber 114.Device door body 120 can be mounted on one by proper method and cylinder 110
It rises, such as L.H.flapped door, R.H.flapped door, upward-acting door or sliding door.Module 130, which occurs, for radio frequency can be configured to generate radiofrequency signal (generally
Refer to frequency in the radiofrequency signal of 300KHz~300GHz).Electric pole plate 140a and lower electrode plate 140b can be horizontally arranged respectively
At the roof and bottom wall of defrosting chamber 114, and module 130 occurs with radio frequency respectively and is electrically connected, module occurs according to radio frequency
130 radiofrequency signals generated generate the rf wave of relevant parameter in defrosting chamber 114, and thaw and be placed in defrosting chamber 114
Interior object to be processed.In the present invention, electric pole plate 140a is transmitting antenna；Lower electrode plate 140b is receiving antenna.Some
In embodiment, 50 ohm of electrical wiring, which can be used, makes electric pole plate 140a and lower electrode plate 140b that module occur with radio frequency respectively
130 electrical connections.
Particularly, it is also provided with infrared sensor 119 on the inner wall of defrosting chamber 114, is configured to sense object to be processed
Size, and according to the volume that the size of object to be processed calculates object to be processed judge radio frequency occur module 130 whether start to work,
And if judge radio frequency occur module 130 start to work, confirm operating power when its work.It thaws in compared with the prior art
The certain defreezing method of power, the present invention judge that radio frequency occurs whether module 130 starts to work by the volume of object to be processed
And determine operating power when its work, targetedly thaw object to be processed, has better defrosting effect, and avoid not
Necessary energy waste.
In the present invention, the quantity of infrared sensor 119 can be two.Two infrared sensors 119 are respectively arranged at solution
Freeze on the rear inward wall and a transverse inner wall of chamber 114, and is configured to sense object to be processed respectively in the cross of thawing apparatus 100
The cross section of size and object to be processed on direction (is cut along what the depth direction and vertical direction of thawing apparatus 100 extended
Face) area.The volume of object to be processed can be calculated by the methods of equation, integration method.In some preferred embodiments,
Two infrared sensors 119 can be spaced setting in the vertical direction of thawing apparatus 100, to improve the volume of gained object to be processed
Accuracy.In some alternate embodiments, two infrared sensors 119 may be disposed at sustained height.
Specifically, module 130, which occurs, for radio frequency can be configured to when the volume of object to be processed is in a preset range, start
Work；When the volume of object to be processed is not in preset range, do not start to work.In some preferred embodiments, radio frequency is sent out
Raw module 130 can be further configured to be more than or equal to one first volume threshold and when less than second volume threshold, work
Power is the 75~95% of its rated power, such as 75%, 80%, 90% or 95%；When the volume of object to be processed is more than or equal to
Second volume threshold and be less than or equal to a third volume threshold value when, operating power be its rated power.Wherein the first volume threshold
Value is more than or equal to zero, and for the first volume threshold less than the second volume threshold, the second volume threshold is less than third volume threshold value, and default
Range is to be less than or equal to third volume threshold value more than or equal to the first volume threshold.In the present invention, the first volume threshold can be 0；
Second volume threshold can be the 25~55% of defrosting chamber capacity, such as 25%, 40% or 55%；Third volume threshold value can be solution
Freeze the 65~75% of chamber capacity, such as 65%, 70% or 75%；Radio frequency occur module 130 rated power can for 100~
150W, such as 100W, 120W, 130W or 150W.
In some preferred embodiments, thawing apparatus 100 can be configured to the volume when object to be processed less than the first volume threshold
When value, issues vision and/or audible signal reminds user unloaded；When the volume of object to be processed is greater than third volume threshold value, hair
Vision and/or audible signal remind user's overload out.May be provided with indicator light and/or alarm in device door body 120, with to
Vision is issued when processed material too small (less than the first volume threshold) or excessive (being greater than third volume threshold value) and/or audible signal mentions
Wake up user.
Further, it when the present invention is too small by the volume in object to be processed, reminds user unloaded, it is existing to avoid " sky is burnt "
The generation of elephant, namely be that of avoiding radio frequency and work when 130 zero load of module occurs, the failure rate of thawing apparatus 100 is reduced, and keep away
The generation of undesirably energy consumption is exempted from.When the volume of object to be processed is excessive, user's overload is reminded, is avoided due to object to be processed
Internal-external temperature difference excessive (be greater than 3 DEG C) and generation the phenomenon that excessively reduce its quality.
In some embodiments, thawing apparatus 100 may also include detection module 150.Detection module 150 can be configured to detect
The electrical wiring of module 130 and electric pole plate occurs for radio frequency incidence wave signal and reflection wave signal are connected, and is believed according to incidence wave
Number voltage and current and reflection wave signal voltage and current, calculate radio frequency occur module 130 load impedance.Load
The calculation formula of impedance is as follows:
SWR=Z2/Zl (1)
Zl=Ul/ II=RI+jXl (2)
Z2=U2/l2=R2+jX2 (3)
In formula (1), (2), (3): SWR is standing-wave ratio；Z1For output impedance；Z2For load impedance；U1For incidence wave electricity
Pressure；I1For incidence wave electric current；R1For output resistance；X1For output reactance；U2For reflected wave voltage；I2For back wave electric current；R2For
Load resistance；X2For load reactance, (understandably, output impedance is that module 130 occurs for connection radio frequency to those skilled in the art
With the impedance of the electrical wiring of electric pole plate 140a, load impedance is the impedance of object to be processed).
Fig. 3 is the schematic diagram for the load impedance that module occurs for adjusting radio frequency according to an embodiment of the invention.Referring to figure
3, thawing apparatus 100 may also include load compensation module 160.Load compensation module 160 may include a compensating unit 161 and be used for
Adjust the motor 162 of the impedance of compensating unit 161.Compensating unit 161 may be configured as connecting with object to be processed, i.e., radio frequency is sent out at this time
The load impedance of raw module 130 be the impedance of object to be processed and the impedance of compensating unit 161 and.Motor 162 can be configured to by
The impedance of compensating unit 161 is increased or reduced to control, and then increases or reduces the load impedance Z that module 130 occurs for radio frequency2, and
Make radio frequency that the load impedance Z of module 130 occur2With output impedance Z1Difference (i.e. load impedance Z2Subtract output impedance Z1It obtains
Numerical value) it is more than or equal to one first impedance threshold and is less than or equal to one second impedance threshold, and the first impedance threshold is less than the second resistance
Anti- threshold value, to improve the defrosting efficiency of object to be processed.In some preferred embodiments, the first impedance threshold is output impedance Z1
- 6~-4%, the second impedance threshold be output impedance Z14~6%.It is further preferred that the first impedance threshold is output resistance
Anti- Z1- 5%, the second impedance threshold be output impedance Z15%.In other words, load compensation module can be configured to send out radio frequency
The load impedance Z of raw module 1302With output impedance Z1Absolute value of the difference, be always less than output impedance in entire course of defrosting
Z15%, may be, for example, output impedance Z11%, 3% or 5%.
Detection module 150 can be configured to the load impedance Z that module 130 further occurs according to radio frequency2, calculate object to be processed
Dielectric coefficient and dielectric coefficient rate of change, to judge the defrosting progress of object to be processed.The dielectric coefficient of object to be processed
Calculation formula is as follows:
X2=1/2 π fC (4)
The π of ε=4 KdC/S (5)
In formula (4), (5): f is the frequency of rf wave；C is the electricity that electric pole plate 140a and lower electrode plate 140b is constituted
The capacitor of container；ε is the dielectric coefficient of object to be processed；K is dielectric constant；D is the thickness of electric pole plate；S is electric pole plate
Area.
The rate of change of the dielectric coefficient of object to be processed can pass through the variation of the dielectric coefficient ε in unit of account time Δ t
It is worth Δ ε to obtain, wherein unit time Δ t can be 0.1 second~1 second, such as 0.1 second, 0.5 second or 1 second.Fig. 5 is according to the present invention
(ordinate is the change of the dielectric coefficient of object to be processed to the rate of change curve graph of the dielectric coefficient of the object to be processed of one embodiment
Change rate Δ ε/Δ t；Abscissa is the thawing time t, unit min of object to be processed).Referring to Fig. 5, in some preferred embodiments
In, module 130, which occurs, for radio frequency can be configured to be more than or equal to the first speed as rate of change Δ ε/Δ t of the dielectric coefficient of object to be processed
When rate threshold value, current operating power reduces by 30%~40%, such as 30%, 35% or 40%, to prevent object quilt to be processed
It excessively thaws (those skilled in the art understandably, excessively thaw and are greater than 0 DEG C for the temperature of object to be processed).First rate threshold
Value can be 15~20, such as 15,17,18 or 20.Module 130, which occurs, for radio frequency may be additionally configured to the dielectric coefficient for working as object to be processed
When rate of change Δ ε/Δ t drops below or equal to the second rate-valve value, stop working.Second rate-valve value can be 1~2, example
Such as 1,1.5 or 2.
With the temperature change of object to be processed, the dielectric coefficient of object to be processed can also change therewith, be those skilled in the art
Member is known, however dielectric coefficient is usually measured by special instrument (such as dielectric coefficient tester), and special instrument occupies sky
Between it is big, at high cost, be not suitable for the lesser thawing apparatus of size.The present invention by detection connection radio frequency occur module 130 with it is upper
The incidence wave signal and reflection wave signal of the electrical wiring of electrode plate, are computed the dielectric coefficient for obtaining object to be processed, occupied space
It is small and at low cost, especially suitable for thawing apparatus.The present invention makes radio frequency that the negative of module 130 occur by load compensation module 160
The difference for carrying impedance and output impedance is in a preset range (more than or equal to one first impedance threshold and less than or equal to one second impedance
Threshold value) in, improve the defrosting efficiency of object to be processed.
Further, the present invention calculates the rate of change of the dielectric coefficient of object to be processed by detection module 150, to judge
The defrosting progress of object to be processed.Before making the present invention, those skilled in the art are it is believed that the temperature when object to be processed is higher
When (temperature of object i.e. to be processed is more than or equal to -7 DEG C), fuel factor can significantly decay, thus object to be processed will not excessively be thawed.
However actual conditions are really not so, usual radio frequency defrosting power is larger, be greater than 100W, when object to be processed self-temperature
When higher, object to be processed is easily excessively thawed.Present inventor creatively recognizes, when object to be processed temperature
When higher, the operating power that module 130 occurs for radio frequency is reduced by 30~40%, object to be processed can be effectively prevented and decomposed excessively
Freeze.Further, whether the present invention judges to thaw and complete by the rate of change of the dielectric coefficient of object to be processed, compared to existing
Judge to thaw whether complete by sensing the temperature of object to be processed in technology, it is more accurate to judge, can further prevent wait locate
Reason object is excessively thawed, and test shows the object to be processed to be thawed by thawing apparatus of the invention, the temperature one thawed when completing
As be -4~-2 DEG C, can avoid when object to be processed be meat when, thaw generate watery blood.
Fig. 2 is the schematic cross sectional views of the cutting line A-A interception in Fig. 1.Referring to Fig. 1 and Fig. 2, cylinder 110 can also wrap
Include the vertical baffle 111 and horizontal baffle 112 of the inner space for limiting cylinder 110.Vertical baffle 111 may be configured as from cylinder
The top plate of body 110 extends to the bottom plate of cylinder 110 in the vertical direction.Module 130, which occurs, for radio frequency may be disposed at 111 He of vertical baffle
Between the back plate of cylinder 110.Horizontal baffle 112 may be configured as extending forward in the horizontal direction from vertical baffle 111.Detection module
150 and load compensation module 160 may be disposed between horizontal baffle 112 and the top plate of cylinder 110.Defrosting chamber 114 can be by erecting
It is surrounded to partition 111, the bottom plate of horizontal baffle 112 and cylinder 110 and two lateral side plates.Electric pole plate 140a may be disposed at
The lower surface of horizontal baffle 112, lower electrode plate 140b may be disposed at the upper surface of the bottom plate of cylinder 110.Vertical baffle 111 can be opened
Equipped with the first thread passing port 1112, so that radio frequency occurs module 130 and is electrically connected via the first thread passing port 1112 with electric pole plate 140a.
Cylinder 110 may also include the baffle for extending upwardly to the top plate of cylinder 110 in the vertical direction from the anterior end of horizontal baffle 112
113, to prevent detection module 150 and load compensation module 160 exposed, reduce the aesthetics of thawing apparatus 100.At other
In embodiment, can also according to the actual situation (radio frequency generation module 130 and detection module 150 and load compensation module 160 ruler
Very little size), horizontal baffle 112 is set as extending forward in the horizontal direction from the back plate of cylinder 110, vertical baffle 111 is arranged
For the bottom plate for extending to cylinder 110 in the vertical direction from horizontal baffle 112.
In some embodiments, the back plate of cylinder 110 can offer device air inlet 115, the rear side of defrosting chamber 114
Vertical baffle 111 can offer defrosting air inlet 1111, so that the air outside thawing apparatus 100 is via 115 He of device air inlet
Defrosting air inlet 1111 enters to the defrosting chamber 114 of thawing apparatus 100.The side plate of the both lateral sides of cylinder 110 can offer
Device air outlet 118, so that the gas in defrosting chamber 114 is expelled to outside thawing apparatus 100 via device air outlet 118.
The present invention is not being received by being provided with device air inlet 115 and device air outlet 118 on thawing apparatus 100
To when defrosting instruction, defrosting chamber 114 can be used to place food materials, and the storage space in thawing apparatus 100 is made to obtain sufficient benefit
With.
In some preferred embodiments, the device air inlet 115 of thawing apparatus 100 and defrosting air inlet 1111 can be set respectively
The both lateral sides that module 130 occurs for radio frequency are placed in, in order to which the heat dissipation of module 130 occurs for radio frequency.In some alternate embodiments
In, the device air inlet 115 and defrosting air inlet 1111 of thawing apparatus 100 may be disposed at the same side that module 130 occurs for radio frequency.
Thawing apparatus 100 may also include pallet 170.Pallet 170 is set in defrosting chamber 114, and object to be processed is placed
In on pallet 170.Pallet 170 can be configured to controllably to move on the depth direction of defrosting chamber 114, in order to be processed
The placement and taking-up of object.In some preferred embodiments, the lower surface of pallet 170 at a distance from lower electrode plate 140b can for 8~
12mm, such as 8mm, 10mm, 12mm generate friction with lower electrode plate 140b to prevent during 170 pull of pallet.
Fig. 4 is the schematic diagram of thawing apparatus in Fig. 1, and wherein the device door body of the thawing apparatus is removed, to show
The internal structure of cylinder out.Referring to Fig. 1 and Fig. 4, cylinder 110 and device door body 120 can be respectively arranged with electromagnetic shielding feature
117.It is set to the electromagnetic shielding feature 117 of cylinder 110 and the electromagnetic shielding feature 117 for being set to device door body 120 is electrically conductive
Connection, to reduce the outside magnetic dispersion amount of thawing apparatus 100 when device door body 120 is closed.Being electromagnetically shielded feature 117 can be
The conductive coating of the inner surface (towards the surface of cylinder 110) of inner wall and device door body 120 coated on cylinder 110 is posted by
The conductive metal mesh of the inner surface of the inner wall and device door body 120 of cylinder 110 or be formed in surround cylinder 110 each plate body it
Neutralize the conductive metal mesh etc. in device door body 120.
In some preferred embodiments, thawing apparatus 100 may also include elastic conduction ring 180.Elastic conduction ring 180
It may be disposed at the peripheral region of the forward opening of defrosting chamber 114, so that it is squeezed and deformed when device door body 120 is closed,
It is fitted closely with device door body 120, i.e., forms sealing between elastic conduction ring 180 and device door body 120.It is set to cylinder
110 electromagnetic shielding feature 117 and the electromagnetic shielding feature 117 for being set to device door body 120 can be respectively set to and elastic conducting
Electric 180 conductive contact of ring, to reduce the outside magnetic dispersion amount of thawing apparatus 100 when device door body 120 is closed.Some
In preferred embodiment, elastic conduction ring 180 can by silicone, silicone fluoride, EPDM, fluorocarbon-fluorine compound with
And silver coated aluminum is made.Elastic conduction ring 180 can be hollow annular construction so that its device door body 120 close when, with device
Door body 120 fits closely.The width of elastic conduction ring 180 can be 20~30mm, such as 20mm, 25mm or 30mm, to improve
The leakproofness of thawing apparatus 100.In some preferred embodiments, the device air inlet 115 of thawing apparatus 100, defrosting air inlet
1111 and device air outlet 118 can be provided with conductive metal mesh 190, conductive metal mesh 190 may be configured as and be set to cylinder
110 electromagnetic shielding feature 117 is conductively connected, to reduce the magnetic dispersion amount of thawing apparatus 100.
Particularly, in the present invention, the frequency for the radiofrequency signal that module 130 generates occurs for radio frequency (i.e. for thawing wait locate
Manage the electromagnetic wave of object) can be 40~42MHz, such as 40MHz, 40.48MHz, 40.68MHz, 41MHz or 42MHz, with reduce to
The thawing time of processed material improves the temperature uniformity of object to be processed and reduces its juice loss rate.In a preferred embodiment, it penetrates
The frequency of frequency wave can be a preset fixed frequency within the scope of 40.48~40.68MHz, further to reduce object to be processed
Thawing time improves the temperature uniformity of object to be processed and reduces its juice loss rate.Wherein, when the frequency of rf wave is
When 40.68MHz, defrosting effect is best.
For a further understanding of the present invention, the preferred embodiments of the invention are carried out below with reference to more specific embodiment
Description, however, the present invention is not limited to these examples.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | |
| Frequency (MHz) | 40 | 40.48 | 40.68 | 41 | 42 | 13.56 | 27.12 |
It is respectively arranged in the thawing apparatus 100 of the rf frequency of above-described embodiment 1-5 and comparative example 1-2, rf wave
Power is 100W, and the structure and its workflow of thawing apparatus 100 are all the same.
Thawing apparatus 100 to the frequency for being provided with each embodiment and each comparative example, carries out defrosting measure of merit.Test is said
It is bright: to select 1kg shape specification identical, and initial temperature is -18 DEG C of beef, be respectively placed in each embodiment and each comparative example
On pallet 170 in thawing apparatus 100, thawing time, temperature uniformity and the liquid of each embodiment and each comparative example are measured respectively
Juice turnover rate.Wherein thawing time be from thaw, until thawing apparatus 100 judgement thaw complete (i.e. radio frequency generation module 130
Stop working) time；Temperature uniformity: after the completion of defrosting, the temperature of four corners of beef and central point is measured respectively, and is counted
The difference of the average value of central point temperature and four corners is calculated, temperature uniformity is the ratio of the difference and the average value；Juice
Turnover rate: the weight after measuring weight and defrosting before beef thaws respectively, and the two difference is calculated, juice loss rate is the difference
The ratio of value and the weight before beef defrosting.
According to embodiment 1-7 and according to the defrosting measure of merit result such as table 2 of comparative example 1-2.
Table 2
| Thawing time (min) | Temperature uniformity | Juice loss rate (%) | |
| Embodiment 1 | 19 | 0.4 | 0.35 |
| Embodiment 2 | 18 | 0.4 | 0.32 |
| Embodiment 3 | 18 | 0.3 | 0.29 |
| Embodiment 4 | 19 | 0.5 | 0.35 |
| Embodiment 5 | 20 | 0.5 | 0.40 |
| Comparative example 1 | 25 | 0.6 | 0.35 |
| Comparative example 2 | 23 | 0.6 | 0.40 |
It is identical to can be seen that the power in rf wave according to the test result of embodiment 5 in table 2 and comparative example 1, and thaws
In the case that the structure and its workflow of device 100 are all the same, under same test condition, using range of embodiment of the invention
The defrosting effect of the thawing apparatus 100 of interior rf frequency is better than the thawing apparatus 100 of application rf frequency in the prior art,
The former reduces 20% than the thawing time of the latter, and temperature uniformity improves 17%.
It can be seen that the thawing apparatus 100 using various embodiments of the present invention according to the test result of embodiment 1-5 in table 2
Thawing time in 20min hereinafter, temperature uniformity is 0.5 hereinafter, juice loss rate is below 0.40%.By into
The frequency (such as rf frequency is in 40.48~40.68MHz) of the preferred rf wave of one step, can be by the thawing time of thawing apparatus 100
It reduces to 18min hereinafter, temperature uniformity is improved to 0.4 hereinafter, juice loss rate is reduced to 0.32% or less.
Fig. 6 is the flow chart of the defreezing method according to an embodiment of the invention for thawing apparatus 100.Referring to Fig. 6,
The defreezing method of thawing apparatus 100 of the invention may include steps of:
S602: infrared sensor 119 senses the size of object to be processed；
S604: its volume is calculated according to the size of object to be processed；
S606: the volume of object to be processed is obtained；
S508: judge operating power when whether module 130 starts to work and determine its work occurs for radio frequency.
A kind of refrigerator 10 can also be provided in thawing apparatus 100 based on aforementioned any embodiment, the present invention.Fig. 7 is according to this
The schematic diagram of the refrigerator 10 of invention one embodiment, wherein all outer door body of the refrigerator 10 are all removed, to show
Cell structure between in the cabinet 200 of refrigerator 10；Fig. 8 is the schematic cross sectional views of refrigerator 10 shown in Fig. 7.Referring to Fig. 1,7 and 8, ice
Case 10 generally may include the cabinet 200 for defining at least one accommodation space, for being opened and closed each accommodation space respectively
The compartment door body of mouth is picked and placed, and is set to the thawing apparatus 100 of an accommodation space.In the illustrated embodiment, thawing apparatus
100 quantity is one.The quantity of the accommodation space of refrigerator 10 can be three, respectively refrigerator room 210, alternating temperature compartment 220
With freezing compartment 230, and be respectively used to opening and closing refrigerator room 210, alternating temperature compartment 220 and freezing compartment 230 refrigeration door body
211, alternating temperature door body 221 and freezing door body 231, thawing apparatus 100 are set in alternating temperature compartment 220.Thawing apparatus 100 can pass through
It is fixed in alternating temperature compartment 220 with modes such as the inner wall interference fit of the vertical two sides of alternating temperature compartment 220 or clampings.
In addition, also illustratable be, knownly, refrigerator room 210 refers to the preservation to food materials to those skilled in the art
The storage room that temperature is 0~+8 DEG C；The storing that it is -20~-15 DEG C between the preservation temperature of food materials that freezing compartment 230, which refers to,
Room；Alternating temperature compartment 220 refer to can to a wide range (such as adjusting range can at 4 DEG C or more, and be adjustable to 0 DEG C or more or 0 DEG C with
Under) change the storage room of its preservation temperature, its general preservation temperature may span across refrigeration, soft freezing (generally -4~0 DEG C) and
Cryogenic temperature, preferably -16~+4 DEG C.
The back plate of cylinder 110 can there are gaps with the rear wall of alternating temperature compartment 220, in order to the air in alternating temperature compartment 220
It enters in thawing apparatus 100.The side plate of the both lateral sides of cylinder 110 can be stayed with the side wall of the both lateral sides of alternating temperature compartment 220
There is gap, in order to which the gas in thawing apparatus 100 is expelled in alternating temperature compartment 220.When refrigerator 10 is direct cooling refrigerator, alternating temperature
The rear wall of compartment 220 is the rear wall of its liner；When refrigerator 10 is wind cooling refrigerator, the rear wall of alternating temperature compartment 220 is its interior air duct
The front surface of cover board.In some preferred embodiments, the side plate of the back plate and both lateral sides of cylinder 110 and corresponding alternating temperature compartment
The distance of 220 rear wall and the side wall of both lateral sides can be 2~3mm, such as 2mm, 2.5mm or 3mm, to guarantee thawing apparatus
100 have intake appropriate and air output while, guarantee defrosting chamber 114 have biggish dischargeable capacity.
In some embodiments, refrigerator 10 according to the present invention can be wind cooling refrigerator, and alternating temperature compartment 220 may include air duct
Cover board.The sandwiched formation alternating temperature air duct of liner rear wall of air duct cover board and alternating temperature compartment 220, and offered on air duct cover board alternating temperature into
Air port, for providing cooling capacity for alternating temperature compartment 220.
In some preferred embodiments, the device air inlet 115 of thawing apparatus 100 can be connect with alternating temperature air inlet by one
Pipe connection, in order to freeze for the defrosting chamber 114 of thawing apparatus 100.In other preferred embodiments, thawing apparatus
100 device air inlet 115 can be in alternating temperature air inlet in the projection on the thickness direction of the back plate of cylinder 110, in order to
Freeze for the defrosting chamber 114 of thawing apparatus 100.
In some embodiments, it may be provided in any one compartment door body and to be started or stopped for controlling thaw routine
Thaw switch 224.Infrared sensor 119 can be configured to start work when the switch 224 that thaws is opened and device door body 120 is closed
Make；When module 130, which occurs, for radio frequency starts to work, stop working.In course of defrosting, user can be by closing the switch that thaws
224 terminate thaw routine.It is also provided with buzzer (not shown) in any one compartment door body, for prompting user
Object to be processed has thawed completion.Buzzer can be configured to the (object to be processed when detection module 150 judges that object defrosting to be processed is completed
The rate of change of dielectric coefficient when dropping below or equal to the second preset threshold), start to work；When object to be processed is from defrosting chamber
When being taken out in room 114, stop working.It may be provided with infrared sensor on the inner wall of defrosting chamber 114, to sense defrosting chamber
Whether to be handled object is placed in 114.In some preferred embodiments, the refrigeration system of refrigerator 10 can be configured to when the switch that thaws
When 224 opening, stop to be provided with the accommodation space of thawing apparatus 100 and providing cooling capacity；When thaw the closing of switch 224 when, can be by
Control ground provides cooling capacity (running the original refrigerant sequence of refrigerator 10) to be provided with the accommodation space of thawing apparatus 100, to reduce
When thawing apparatus 100 thaws object to be processed, the influence of the refrigeration system of refrigerator 10 to the temperature of defrosting chamber 114.Wherein ice
The refrigeration system of case 10 may include compressor, condenser, capillary and for providing the evaporator of cooling capacity.
Fig. 9 is the schematic diagram of Tu8Zhong compressor room 240.Referring to Fig. 9, the cabinet 200 of refrigerator 10 is further defined with pressure
Contracting machine room 240.Compressor room 240 may include set gradually for control refrigerator 10 operation master control borad 243, compressor 241,
Condensation water collection structure 244 and for for refrigerator 10 operation power supply circumscripted power line (not shown).In some implementations
In example, refrigerator 10 may also include for the power supply module 242 that module 130 is powered to occur for radio frequency.Power supply module 242 may be disposed at
In the compressor room 240 of refrigerator 10, in order to the heat dissipation and maintenance of power supply module 242.The back plate of cylinder 110 can offer second
Thread passing port 116 is electrically connected so that with radio frequency module 130 occurs for power supply module 242 via the second thread passing port 116.Power supply module 242
It is securable to the upper wall of compressor room 240, in order to which being electrically connected for module 130 and power supply module 242 occurs for radio frequency.In some realities
It applies in example, power supply module 242 can be DC-DC converter.DC-DC converter may be configured as being electrically connected with master control borad 243, for defrosting
Device 100 is powered.DC-DC converter may be disposed between master control borad 243 and compressor 241, so that the electricity of itself and master control borad 243
It connects more convenient.In further embodiments, power supply module 242 can be ACDC converter.ACDC converter may be configured as with
The external power supply of refrigerator 10 is electrically connected.Those skilled in the art understandably, by all parts and refrigerator of thawing apparatus 100
It is easy to accomplish that 10 control circuit, which is connected,.
Figure 10 is the detail flowchart of the defreezing method according to an embodiment of the invention for refrigerator 10.Referring to figure
10, the defreezing method of refrigerator 10 of the invention may include steps of:
Step S1002: judging whether defrosting switch 224 is opened, if so, executing step S1004；If it is not, executing step
S1002。
Step S1004: power supply module 242 is started to work.
Step S1006: whether judgment means door body 120 closes, if so, executing step S1008；If it is not, executing step
S1006。
Step S1008: infrared sensor 119 senses the size of object to be processed.
Step S1010: the volume of object to be processed is obtained.
Step S1012: judging whether the volume of object to be processed is more than or equal to the first volume threshold, if so, executing step
S1014；If it is not, executing step S1020.
Step S1014: judging whether the volume of object to be processed is more than or equal to the second volume threshold, if so, executing step
S1016；If it is not, executing step S1022.
Step S1016: judging whether the volume of object to be processed is greater than third volume threshold value, if so, executing step S1018；
If it is not, executing step S1024.
Step S1018: issuing vision and/or audible signal reminds user's overload.
Step S1020: issuing vision and/or audible signal reminds user unloaded.
Step S1022: radio frequency is occurred module 130 and is worked with 80% rated power.Execute step S1026.
Step S1024: radio frequency is occurred module 130 and is worked with rated power.Execute step S1026.
Step S1026: refrigeration system stops to be provided with the accommodation space of thawing apparatus 100 and providing cooling capacity, and radio frequency occurs
Module 130 generates the radiofrequency signal of 40~42MHz, and infrared sensor 119 stops sensing, the detection connection radio frequency of detection module 150
The incidence wave signal and reflection wave signal of module 130 and the electrical wiring of electric pole plate 140a occurs.In this step, thawing apparatus
100 are set in alternating temperature compartment 220, and the frequency that the radiofrequency signal that module 130 generates occurs for radio frequency is 40.68MHz.Operating procedure
S1028 and step S1029.
Step S1028: obtain incidence wave signal voltage and current and reflection wave signal voltage and current, calculate to
Rate of change Δ ε/Δ t of the dielectric coefficient of processed material.
Step S1030: judge whether rate of change Δ ε/Δ t of the dielectric coefficient of object to be processed is more than or equal to first rate
Threshold value, if so, executing step S1032；If it is not, executing step S1028.
Step S1032: the current operating power of module 130, which occurs, for radio frequency reduces by 30~40%.In this step, radio frequency is sent out
The current operating power of raw module 130 reduces by 35%.
Step S1034: obtain incidence wave signal voltage and current and reflection wave signal voltage and current, calculate to
Rate of change Δ ε/Δ t of the dielectric coefficient of processed material.
Step S1036: judge whether rate of change Δ ε/Δ t of the dielectric coefficient of object to be processed is less than or equal to the second rate
Threshold value, if so, executing step S1038；If it is not, executing step S1034.
Step S1038: power supply module 242 stops working, and the switch 224 that thaws is resetted and (closed), runs the original of refrigerator 10
Beginning refrigerant sequence, buzzer are started to work.
Step S1040: judging whether object to be processed takes out out of defrosting chamber 114, if so, executing step S1042；If
It is no；Execute step S1038.
Step S1042: buzzer stops working.
Step S1029: obtaining the voltage and current of incidence wave signal and the voltage and current of reflection wave signal, calculating are penetrated
The load impedance Z for the raw module 130 that takes place frequently2。
Step S1031: judge that the load impedance Z of module 130 occurs for radio frequency2With output impedance Z1Difference whether less than
One impedance threshold, if so, executing step S1033；If it is not, executing step S1035.
Step S1033: the motor 162 of load compensation module 160 works, and increases the impedance of compensating unit 161.Return step
S1029。
Step S1035: judge that the load impedance Z of module 130 occurs for radio frequency2With output impedance Z1Difference whether be greater than
Two impedance thresholds, if so, executing step S1037；If it is not, executing step S1029.
Step S1037: the motor 162 of load compensation module 160 works, and reduces the impedance of compensating unit 161.Return step
S1029。
It will be appreciated by those skilled in the art that ground, when program is run to step S1038, power supply module 242 stops working,
Stop power supply, radio frequency occurs module 130, detection module 150 and load compensation module 160 and stops working, i.e., when wait locate
When rate of change Δ ε/Δ t of the dielectric coefficient of reason object drops below or equal to the second rate-valve value, detection module 150 stops inspection
Survey module 130 and the electrical wiring of electric pole plate 140a occur for connection radio frequency incidence wave signal and reflection wave signal, load compensation
Module 160 stops working.
One defrosting workflow of the refrigerator 10 of one embodiment of the invention can include: when user opens the switch that thaws
When 224, power supply module 242 starts to power, and when device door body 120 is closed, infrared sensor 119 senses the ruler of object to be processed
It is very little, judge that radio frequency occurs whether module 130 works according to the volume of object to be processed, and determine operating power when its work.It penetrates
The raw module 130 that takes place frequently generates the radiofrequency signal of 40.68MHz, and infrared sensor 119 stops sensing, and the refrigeration system of refrigerator 10 is stopped
Cooling capacity only is provided to be provided with the accommodation space of thawing apparatus 100, detection module 150 and load compensation module 160 are started to work.
The incidence wave signal and back wave of module 130 and the electrical wiring of electric pole plate 140a occur for the detection connection radio frequency of detection module 150
Signal, and calculate the load impedance Z of RF transmitter 1302And rate of change Δ ε/Δ t of dielectric coefficient.When object to be processed
Dielectric coefficient rate of change Δ ε/Δ t be more than or equal to first rate threshold value when, radio frequency occur module 130 operating power drop
Low 35%, meanwhile, in entire defrosting workflow, when the load impedance Z of module 130 occurs for radio frequency2With output impedance Z1Difference
When less than the first impedance threshold or being greater than the second impedance threshold, load compensation module 160 adjusts compensating unit by motor 162
161 impedance magnitude, and then adjust the load impedance Z that module 130 occurs for radio frequency2, make radio frequency that the load impedance of module 130 occur
Z2With output impedance Z1Difference be always more than equal to the first impedance threshold and be less than or equal to the second impedance threshold.When object to be processed
When rate of change Δ ε/Δ t of dielectric coefficient is less than or equal to the second rate-valve value, power supply module 242 stops power supply, and thaw switch
224 close, and run the original refrigerant sequence of refrigerator 10, and module 130, detection module 150 and load compensation module 160 occur for radio frequency
It stops working, buzzer is started to work.When user takes out object to be processed out of defrosting chamber 114, buzzer stops working.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of defreezing method for thawing apparatus, the thawing apparatus includes defining for placing object to be processed and having
The cylinder of the defrosting chamber of forward opening, be set at the forward opening of the defrosting chamber for being opened and closed the defrosting chamber
Device door body, radio frequency occur module, horizontally be arranged at the roof and bottom wall of the defrosting chamber respectively and respectively with institute
State the electric pole plate and lower electrode plate and be set on the inner wall of the defrosting chamber that radio frequency generation module is electrically connected
For sensing the infrared sensor of the volume of the object to be processed；The defreezing method includes:
The infrared sensor senses the size of the object to be processed；
Its volume is calculated according to the size of the object to be processed；
Obtain the volume of the object to be processed；
Judge operating power when its work is started to work and determined to module whether occurs for the radio frequency.
2. the defreezing method according to claim 1 for thawing apparatus, wherein judging module occurs for the radio frequency whether
The step of work includes:
If the volume of the object to be processed is in a preset range, the radio frequency occurs module and starts to work；
If the volume of the object to be processed is not in the preset range, the radio frequency occurs module and does not work.
3. the defreezing method according to claim 2 for thawing apparatus, further includes:
If the volume of the object to be processed is more than or equal to one first volume threshold and less than one second volume threshold, the radio frequency
The operating power that module occurs is the 75~95% of rated power；
If the volume of the object to be processed is more than or equal to second volume threshold and is less than or equal to a third volume threshold value, institute
Stating radio frequency the operating power of module occurs is rated power；Wherein
First volume threshold be more than or equal to zero, first volume threshold be less than second volume threshold, described second
Volume threshold is less than the third volume threshold value, and the preset range is to be less than or equal to more than or equal to first volume threshold
Third preset vol amount threshold value.
4. the defreezing method according to claim 3 for thawing apparatus, further includes:
If the volume of the object to be processed is less than first volume threshold, issues vision and/or audible signal reminds user
It is unloaded；
If the volume of the object to be processed is greater than the third volume threshold value, issues vision and/or audible signal reminds user
Overload.
5. the defreezing method according to claim 1 for thawing apparatus, the thawing apparatus further include detection module, institute
State detection module be set as detection connect the radio frequency occur module and the electric pole plate electrical wiring incidence wave signal and
Reflection wave signal；The defreezing method includes:
The radio frequency occur module it is in running order when, detect the incidence wave signal and reflection wave signal of the electrical wiring；
Obtain the voltage and current of the incidence wave signal and the voltage and current of the reflection wave signal；
Calculate the load impedance that module occurs for the radio frequency.
6. the defreezing method according to claim 5 for thawing apparatus, the thawing apparatus further includes a load compensation
Module, the load compensation module include being set as with the concatenated compensating unit of the object to be processed and for increasing or reducing
State the motor of the impedance of compensating unit；The defreezing method further include:
Obtain the load impedance that module occurs for the radio frequency；
Judge the radio frequency occur the load impedance of module and the difference of output impedance whether be more than or equal to one first impedance threshold and
Less than or equal to one second impedance threshold；Wherein first impedance threshold is less than second impedance threshold；
If the load impedance of module occurs for the radio frequency and the difference of output impedance is less than first impedance threshold, described in increase
The impedance of compensating unit；
If the load impedance of module occurs for the radio frequency and the difference of output impedance is greater than second impedance threshold, described in reduction
The impedance of compensating unit；
If the load impedance of module occurs for the radio frequency and the difference of output impedance is more than or equal to first impedance threshold and is less than
Equal to second impedance threshold, then the load compensation module does not work.
7. the defreezing method according to claim 5 for thawing apparatus, further includes:
Obtain the load impedance that module occurs for the radio frequency；
Calculate the rate of change of the dielectric constant of the object to be processed；
Judge the defrosting progress of the object to be processed.
8. the defreezing method according to claim 7 for thawing apparatus, wherein judge the defrosting of the object to be processed into
The step of spending include:
Obtain the rate of change of the dielectric constant of the object to be processed；
Judge whether the rate of change of the dielectric coefficient of the object to be processed is more than or equal to first rate threshold value；
If so, the operating power that module occurs for the radio frequency reduces by 30%~40%；And/or
Obtain the rate of change of the dielectric constant of the object to be processed；
Judge whether the rate of change of the dielectric coefficient of the object to be processed drops below or equal to the second rate-valve value；
If so, module from service occurs for the radio frequency.
9. a kind of refrigerator, including defining the cabinet of at least one accommodation space, being respectively used to be opened and closed between the accommodation space
Room door body and the thawing apparatus for being set to an accommodation space, the refrigerator further includes any one of claim 1-8 institute
The defreezing method for thawing apparatus stated.
10. refrigerator according to claim 9 further includes the switch that thaws, the defrosting switch is set to any compartment
In door body, for controlling the start and stop of thaw routine；Wherein the infrared sensor is configured that
When described device door body is closed and defrosting switch is opened, start to work；
When module, which occurs, for the radio frequency starts to work, stop working.
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| CN201710418971.1A CN109000399A (en) | 2017-06-06 | 2017-06-06 | Defreezing method and refrigerator for thawing apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110415205A (en) * | 2019-04-01 | 2019-11-05 | 泰州三凯工程技术有限公司 | Reliable parameter extraction platform |
| CN111412718A (en) * | 2019-01-04 | 2020-07-14 | 青岛海尔股份有限公司 | Thawing method for refrigerating and freezing device and refrigerating and freezing device |
| CN114246287A (en) * | 2021-12-24 | 2022-03-29 | 珠海格力电器股份有限公司 | Unfreezing method, unfreezing device, unfreezing equipment and intelligent household system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110415205A (en) * | 2019-04-01 | 2019-11-05 | 泰州三凯工程技术有限公司 | Reliable parameter extraction platform |
| CN110415205B (en) * | 2019-04-01 | 2020-08-04 | 浦江漱金电子科技有限公司 | Reliable parameter extraction platform |
| CN114246287A (en) * | 2021-12-24 | 2022-03-29 | 珠海格力电器股份有限公司 | Unfreezing method, unfreezing device, unfreezing equipment and intelligent household system |
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Application publication date: 20181214 |