CN109000404A - Refrigerator - Google Patents
Refrigerator Download PDFInfo
- Publication number
- CN109000404A CN109000404A CN201710419637.8A CN201710419637A CN109000404A CN 109000404 A CN109000404 A CN 109000404A CN 201710419637 A CN201710419637 A CN 201710419637A CN 109000404 A CN109000404 A CN 109000404A
- Authority
- CN
- China
- Prior art keywords
- refrigerator
- processed
- defrosting
- thawing apparatus
- module
- 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
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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- 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
- H05B6/48—Circuits
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- 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
-
- 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
Abstract
The present invention provides a kind of refrigerators.The refrigerator includes the cabinet and thawing apparatus for defining the refrigerator room, alternating temperature compartment and the freezing compartment that are sequentially distributed along the vertical direction of refrigerator, and thawing apparatus includes: the cylinder for defining the defrosting chamber for placing object to be processed with forward opening；The device door body for being used to be opened and closed defrosting chamber being set at the forward opening of defrosting chamber；Module occurs for the radio frequency for being configured to generate radiofrequency signal；It horizontally is arranged at the roof and bottom wall of defrosting chamber respectively, and the electric pole plate and lower electrode plate that module is electrically connected occurs with radio frequency respectively, the rf wave of corresponding frequencies, and the indoor object to be processed of the chamber that thaws are generated in defrosting chamber according to radiofrequency signal；And thawing apparatus is set in refrigerator room.Thawing apparatus is arranged in the refrigerator room of refrigerator the present invention, in the course of defrosting of thawing apparatus, will not impact to the indoor temperature of defrosting chamber, and then will not influence the defrosting progress of object to be processed.
Description
Technical field
The present invention relates to defrosting fields, more particularly to a kind of refrigerator with quick-thawing function.
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 refrigerator of article matter.
Summary of the invention
It is an object of the present invention to provide a kind of thaw to influence small refrigerator.
A further object of the present invention is to avoid object to be processed from excessively being thawed.
Particularly, it the present invention provides a kind of refrigerator, is sequentially distributed including defining the vertical direction along the refrigerator
The cabinet and thawing apparatus of refrigerator room, alternating temperature compartment and freezing compartment, the thawing apparatus include:
Cylinder inside defines the defrosting chamber with forward opening, and the defrosting chamber is for placing object to be processed；
Device door body is set at the forward opening of the defrosting chamber, for being opened and closed the defrosting chamber；
Module occurs for radio frequency, is configured to generate radiofrequency signal；With
Electric pole plate and lower electrode plate, horizontally are arranged at respectively at the roof and bottom wall of the defrosting chamber, and respectively
Module occurs with the radio frequency to be electrically connected, to generate the radio frequency of corresponding frequencies in the defrosting chamber according to the radiofrequency signal
Wave, and the indoor object to be processed of the defrosting chamber that thaws；And
The thawing apparatus is set in the refrigerator room.
Optionally, the back plate of the cylinder offers device air inlet, and the back plate of the cylinder and the refrigerator room
Rear wall there are gaps so that the indoor air of the refrigerator enters to the defrosting chamber via described device air inlet；
And
The side plate of the both lateral sides of the cylinder offers device air outlet, and the side plate of the both lateral sides of the cylinder with
There are gaps for the side wall of the both lateral sides of the refrigerator room, so that the indoor gas of defrosting chamber is arranged via device air outlet
Out to the refrigerator room.
Optionally, the rear wall of the cylinder and the side plate of both lateral sides and the rear wall of corresponding refrigerator room and both lateral sides
Side wall distance be 2~3mm.
Optionally, the refrigerator is wind cooling refrigerator；
The refrigerator room includes air duct cover board, the sandwiched formation of liner rear wall of the air duct cover board and the refrigerator room
Air duct is refrigerated, and offers refrigeration air inlet on the air duct cover board, to provide cooling capacity for the refrigerator room；And
The refrigerator room defines multiple accommodation spaces, and the refrigeration air inlet is located at the refrigerator room bottom
In accommodation space；
The thawing apparatus is set in the accommodation space of the bottom, in order to which the refrigeration air duct is the defrosting
Device provides cooling capacity.
Optionally, projection of the described device air inlet on the thickness direction of the air duct cover board is in refrigeration air inlet
In mouthful, in order to which the refrigeration air duct provides cooling capacity for the thawing apparatus.
Optionally, the refrigerator further includes for being opened and closed the cold of the refrigerator room, alternating temperature compartment and freezing compartment respectively
Hide door body, alternating temperature door body and freezing door body；Wherein
The refrigeration door body is provided with the defrosting switch started or stopped for controlling thaw routine；And the radio frequency occurs
Module is configured that
When the defrosting, which switchs, opens, start to work；
When the defrosting, which switchs, closes, stop working.
Optionally, the refrigerator further include:
Detection module is configured to detection and connects the incidence wave that the electrical wiring of module and the electric pole plate occurs for the radio frequency
Signal and reflection wave signal, and according to the voltage and current of the incidence wave signal and the voltage of the reflection wave signal and
Electric current calculates the rate of change of the dielectric coefficient of the object to be processed, to judge the defrosting progress of the object to be processed.
Optionally, the radio frequency generation module is configured that
When the rate of change of the dielectric coefficient of the object to be processed is more than or equal to first rate threshold value, operating power drop
Low 30%~40%, to prevent the object to be processed from excessively being thawed；And/or
When the rate of change of the dielectric coefficient of the object to be processed drops below or equal to the second rate-valve value, stop work
Make.
Optionally, the thawing apparatus further include:
Whether infrared sensor is set on the inner wall of the defrosting chamber, be placed with sensing in the defrosting chamber
The object to be processed.
Optionally, the refrigerator is configured that
When 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, hair
Vision and/or audible signal remind user out；
When the object to be processed controllably takes out out of described defrosting chamber, stop issuing the vision and/or the sense of hearing
Signal.
Thawing apparatus is arranged in the refrigerator room of refrigerator the present invention, is arranged compared to by thawing apparatus at other
Room will not impact the indoor temperature of defrosting chamber, and then will not influence object to be processed in the course of defrosting of thawing apparatus
Defrosting progress.
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 refrigerator according to an embodiment of the invention, wherein all outer door body of the refrigerator
It is all removed, with cell structure between showing in refrigerator body；
Fig. 2 is the schematic cross sectional views of refrigerator shown in Fig. 1；
Fig. 3 is the schematic partial enlarged view of region A in Fig. 2；
Fig. 4 is the schematic cross sectional views of the cutting line B-B interception in Fig. 3；
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 schematic diagram of Tu2Zhong compressor room；
Fig. 7 is the schematic diagram of thawing apparatus in Fig. 3, and wherein the device door body of the thawing apparatus is removed, to show
The internal structure of cylinder out；
Fig. 8 is the flow chart of the defreezing method according to an embodiment of the invention for refrigerator.
Specific embodiment
Fig. 1 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, with cell structure between showing in refrigerator body；Fig. 2 is the schematic cross sectional views of refrigerator shown in Fig. 1；Fig. 3 is in Fig. 2
The schematic partial enlarged view of region A.Referring to Fig. 1 to Fig. 3, refrigerator 10 may include defining refrigerator room 110, alternating temperature compartment
120 and freezing compartment 130 cabinet 100, be respectively used to opening and closing refrigerator room 110, alternating temperature compartment 120 and freezing compartment 130
Refrigeration door body 111, alternating temperature door body 121 and freezing door body 131 and thawing apparatus 200 for the food materials that thaw.Particularly, thaw dress
Setting 200 may be disposed in refrigerator room 110.Thawing apparatus 200 can be fixed on cold by modes such as interference fit, overlap joint or clampings
It hides in compartment 110.Thawing apparatus 200 is arranged in the refrigerator room 110 of refrigerator 10 present invention, compared to by thawing apparatus
200 are arranged in other compartments, in the course of defrosting of thawing apparatus 200, will not cause shadow to the temperature in defrosting chamber 214
It rings, and then will not influence the defrosting progress of object to be processed.
In addition, also illustratable be, knownly, refrigerator room 110 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 130, which refers to,
Room；Alternating temperature compartment 120 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.
Specifically, thawing apparatus 200 may include cylinder 210, device door body 220, radio frequency generation module 230 and power on
Pole plate 240a and lower electrode plate 240b.Cylinder 210 may include top plate and bottom plate, back plate and two opposite lateral side plates, in
The defrosting chamber 214 with forward opening can be defined, defrosting chamber 214 is for placing object to be processed.Device door body 220 can be set
It is placed at the forward opening of defrosting chamber 214, is used to open or closes defrosting chamber 214.Device door body 220 can pass through appropriate side
Method is installed together with cylinder 210, such as L.H.flapped door, R.H.flapped door, upward-acting door or sliding door.It is configurable that module 230 occurs for radio frequency
To generate radiofrequency signal (referring generally to frequency in the radiofrequency signal of 300KHz~300GHz).Electric pole plate 240a and lower electrode plate
240b can horizontally be arranged at respectively at the roof and bottom wall of defrosting chamber 214, and module 230 occurs with radio frequency respectively and is electrically connected
It connects, the rf wave that the radiofrequency signal that module 230 generates generates relevant parameter in defrosting chamber 214 occurs according to radio frequency, and
Thaw the object to be processed being placed in defrosting chamber 214.In the present invention, electric pole plate 240a is transmitting antenna；Lower electrode plate
240b is receiving antenna.In some embodiments, 50 ohm of electrical wiring, which can be used, makes electric pole plate 240a and lower electrode plate
240b occurs module 230 with radio frequency respectively and is electrically connected.
In some embodiments, thawing apparatus 200 may also include detection module 250.Detection module 250 can be configured to detect
Module 230 and the electrical wiring of electric pole plate 240a occur for radio frequency incidence wave signal and reflection wave signal are connected, and according to incidence
The voltage and current of wave signal and the voltage and current of reflection wave signal calculate the load impedance that module 230 occurs for radio frequency.
The calculation formula of load impedance is as follows:
SWR=Z2/Z1 (1)
Z1=U1/l1=R1+jX1 (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 230 occurs for connection radio frequency to those skilled in the art
With the impedance of the electrical wiring of electric pole plate 240a, load impedance is the impedance of object to be processed).
Thawing apparatus 200 may also include load compensation module 260.Load compensation module 260 may include a compensating unit and
For adjusting the motor of the impedance of compensating unit.Compensating unit may be configured as connecting with object to be processed, i.e., mould occurs for radio frequency at this time
The load impedance of block 230 be object to be processed impedance and compensating unit impedance and.Motor can be configured to controllably to increase or
Reduce the impedance of compensating unit, and then increases or reduces the load impedance Z that module 230 occurs for radio frequency2, and make radio frequency that module occur
230 load impedance Z2With output impedance Z1Difference (i.e. load impedance Z2Subtract output impedance Z1Obtained numerical value) it is more than or equal to
One first impedance threshold and it is less than or equal to one second impedance threshold, and the first impedance threshold is less than the second impedance threshold, to improve
The defrosting efficiency of object to be processed.In some preferred embodiments, the first impedance threshold is output impedance Z1- 6~-4%, second
Impedance threshold is output impedance Z14~6%.It is further preferred that the first impedance threshold is output impedance Z1- 5%, second
Impedance threshold is output impedance Z15%.In other words, load compensation module can be configured to make radio frequency that the negative of module 230 occur
Carry impedance Z2With output impedance Z1Absolute value of the difference, output impedance Z is always less than in entire course of defrosting15%, such as
It can be output impedance Z11%, 3% or 5%.
Detection module 250 can be configured to the load impedance Z that module 230 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 240a and lower electrode plate 240b 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 230, 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, operating power reduces by 30%~40%, such as 30%, 35% or 40%, to prevent object to be processed from excessively being solved
Freeze (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 230, which occurs, for radio frequency may be additionally configured to when the variation of the dielectric coefficient of object to be processed is fast
When rate Δ ε/Δ t drops below or equal to the second rate-valve value, stop working.Second rate-valve value can be 1~2, 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 refrigerator.The electricity of module 230 and electric pole plate 240a occurs by detection connection radio frequency for the present invention
The incidence wave signal and reflection wave signal of line, are computed the dielectric coefficient for obtaining object to be processed, occupy little space and at low cost,
Especially suitable for the thawing apparatus in refrigerator.And by load compensation module 260 make radio frequency occur module 230 load impedance with
The difference of output impedance was in a preset range (be more than or equal to one first impedance threshold and be less than or equal to one second impedance threshold),
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 250, 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 230 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.
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 113.In some preferred embodiments, the switch 113 that thaws is set on refrigeration door body 111, in order to user's adjusting
Thaw switch 113.Radio frequency occurs module 230 and can be configured to start to work when the switch 113 that thaws is opened；When the switch 113 that thaws
When closing, stop working.In course of defrosting, user can terminate thaw routine by closing defrosting switch 113.Any one
Buzzer (not shown) is also provided in compartment door body, for prompting user's object to be processed to thaw completion.Buzzer
It can be configured to (the rate of change decline of the dielectric coefficient of object to be processed when detection module 250 judges that object defrosting to be processed is completed
To less than when being equal to the second rate-valve value), it starts to work；When object to be processed takes out from defrosting chamber 214, stop working.
May be provided with infrared sensor 219 on the inner wall of defrosting chamber 214, come sense whether placed in defrosting chamber 214 it is to be handled
Object.
Fig. 6 is the schematic diagram of Tu2Zhong compressor room 140.Referring to Fig. 6, the cabinet 100 of refrigerator 10 is further defined with pressure
Contracting machine room 140.Compressor room 140 may include set gradually for control refrigerator 10 operation master control borad 143, compressor 141,
Condensation water collection structure 144 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 142 that module 230 is powered to occur for radio frequency.Power supply module 142 may be disposed at
In the compressor room 140 of refrigerator 10, in order to the heat dissipation and maintenance of power supply module 142.Power supply module 142 is securable to compressor
The upper wall of room 140, in order to which being electrically connected for module 230 and power supply module 142 occurs for radio frequency.In some embodiments, power supply mould
Block 142 can be DC-DC converter.DC-DC converter may be configured as being electrically connected with master control borad 143, for the power supply of thawing apparatus 200.
DC-DC converter may be disposed between master control borad 143 and compressor 141, so that it is more convenient with being electrically connected for master control borad 143.
In further embodiments, power supply module 142 can be ACDC converter.ACDC converter may be configured as the external electricity with refrigerator 10
Source electrical connection.Those skilled in the art understandably, by the control circuit phase of all parts of thawing apparatus 200 and refrigerator 10
It is even easy to accomplish.
Fig. 4 is the schematic cross sectional views of the cutting line B-B interception in Fig. 3.Referring to Fig. 3 and Fig. 4, cylinder 210 can also be wrapped
Include the vertical baffle 211 and horizontal baffle 212 of the inner space for limiting cylinder 210.Vertical baffle 211 may be configured as from cylinder
The top plate of body 210 extends to the bottom plate of cylinder 210 in the vertical direction.Module 230, which occurs, for radio frequency may be disposed at 211 He of vertical baffle
Between the back plate of cylinder 210.Horizontal baffle 212 may be configured as extending forward in the horizontal direction from vertical baffle 211.Detection module
250 and load compensation module 260 may be disposed between horizontal baffle 212 and the top plate of cylinder 210.Defrosting chamber 214 can be by erecting
It is surrounded to partition 211, the bottom plate of horizontal baffle 212 and cylinder 210 and two lateral side plates.Electric pole plate 240a may be disposed at
The lower surface of horizontal baffle 212, lower electrode plate 240b may be disposed at the upper surface of the bottom plate of cylinder 210.Cylinder 210 may also include
The baffle 213 of the top plate of cylinder 210 is extended upwardly to, in the vertical direction from the anterior end of horizontal baffle 212 to prevent from detecting
Module 250 and load compensation module 260 are exposed, reduce the aesthetics of thawing apparatus 200.In further embodiments, may be used
(size of radio frequency generation module 230 and detection module 250 and load compensation module 260) according to the actual situation, by water
Flat partition board 212 is set as extending forward in the horizontal direction from the back plate of cylinder 210, and vertical baffle 211 is set as from horizontal baffle
212 extend to the bottom plate of cylinder 210 in the vertical direction.
Vertical baffle 211 can offer the first thread passing port 2112, so that module 230 occurs for radio frequency via the first thread passing port
2112 are electrically connected with electric pole plate 240a.The back plate of cylinder 210 can offer the second thread passing port 216, so that thawing apparatus 200
Electrical wiring draws from the second thread passing port 216, and is connected with power supply module 142.
In some embodiments, the back plate of cylinder 210 can offer device air inlet 215, the rear side of defrosting chamber 214
Vertical baffle 211 can offer defrosting air inlet 2111, so that the air in refrigerator room 110 is via 215 He of device air inlet
Defrosting air inlet 2111 enters to the defrosting chamber 214 of thawing apparatus 200.The side of the both lateral sides of 210 defrosting chamber 214 of cylinder
Plate can offer device air outlet 218, so that the gas in defrosting chamber 214 is expelled to refrigerator via device air outlet 218
Room 110.The back plate of cylinder 210 can with the rear wall of refrigerator room 110 there are gap, in order to the air in refrigerator room 110 into
Enter to thawing apparatus 200.The side plate of the both lateral sides of cylinder 210 can with the side walls of the both lateral sides of refrigerator room 110 there are
Gap, in order to which the gas in thawing apparatus 200 is expelled in refrigerator room 110.When refrigerator 10 is direct cooling refrigerator, refrigerator
The rear wall of room 110 is the rear wall of its liner；When refrigerator 10 is wind cooling refrigerator, the rear wall of refrigerator room 110 is its interior air duct lid
The front surface of plate.
In some preferred embodiments, the side plate of the back plate and both lateral sides of cylinder 210 and corresponding refrigerator room 110
The distance of rear wall and the side wall of both lateral sides can be 2~3mm, such as 2mm, 2.5mm or 3mm, to guarantee the tool of thawing apparatus 200
While having intake and air output appropriate, guarantee that defrosting chamber 214 has biggish dischargeable capacity.
In some embodiments, refrigerator 10 according to the present invention can be wind cooling refrigerator, and refrigerator room 110 may include air duct
Cover board 112.Air duct cover board 112 and the sandwiched formation of the liner rear wall of refrigerator room 110 refrigerate air duct, and open on air duct cover board 112
Equipped with refrigeration air inlet 1121, for providing cooling capacity for refrigerator room 110.In some preferred embodiments, refrigerator room 110 can
Multiple accommodation spaces are defined, i.e., the quantity of the accommodation space limited in refrigerator room 110 can be two, three or three or more
Deng, and thawing apparatus 200 may be disposed in the accommodation space of neighbouring refrigeration air inlet 1121.Referring to fig. 2, due to usually refrigerate into
Air port 1121 is set in the accommodation space of the bottom of refrigerator room 110, therefore thawing apparatus 200 is preferably disposed on refrigerator room
It is that thawing apparatus 200 provides cooling capacity in order to refrigerate air duct in the accommodation space of 110 bottom.Some further excellent
It selects in embodiment, projection of the device air inlet 215 of thawing apparatus 200 on the thickness direction of air duct cover board 112 can be at cold
It hides in air inlet 1121, in order to freeze for the defrosting chamber 214 of thawing apparatus 200.
In some preferred embodiments, the device air inlet 215 of thawing apparatus 200 and defrosting air inlet 2111 can be set respectively
The both lateral sides that module 230 occurs for radio frequency are placed in, in order to which the heat dissipation of module 230 occurs for radio frequency.In some alternate embodiments
In, the device air inlet 215 and defrosting air inlet 2111 of thawing apparatus 200 may be disposed at the same side that module 230 occurs for radio frequency.
The present invention is not being received by being provided with device air inlet 215 and device air outlet 218 on thawing apparatus 200
To when defrosting instruction, defrosting chamber 214 can be used to place food materials, and the storage space in refrigerator room 110 is made to obtain sufficient benefit
With.
Thawing apparatus 200 may also include pallet 270.Pallet 270 is set in defrosting chamber 214, and object to be processed is placed
In on pallet 270.Pallet 270 can be configured to controllably to move on the depth direction of defrosting chamber 214, in order to be processed
The placement and taking-up of object.In some preferred embodiments, the lower surface of pallet 270 at a distance from lower electrode plate 240b can for 8~
12mm, such as 8mm, 10mm, 12mm generate friction with lower electrode plate 240b to prevent during 270 pull of pallet.
Fig. 7 is the schematic diagram of thawing apparatus in Fig. 3, 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. 7, cylinder 210 and device door body 220 can be respectively arranged with electromagnetic shielding feature
217.It is set to the electromagnetic shielding feature 217 of cylinder 210 and the electromagnetic shielding feature 217 for being set to device door body 220 is electrically conductive
Connection, to reduce the outside magnetic dispersion amount of thawing apparatus 200 when device door body 220 is closed.Being electromagnetically shielded feature 217 can be
The conductive coating of the inner surface (towards the surface of cylinder 210) of inner wall and device door body 220 coated on cylinder 210 is posted by
The conductive metal mesh of the inner surface of the inner wall and device door body 220 of cylinder 210 or be formed in surround cylinder 210 each plate body it
Neutralize the conductive metal mesh etc. in device door body 220.
In some preferred embodiments, thawing apparatus 200 may also include elastic conduction ring 280.Elastic conduction ring 280
It may be disposed at the peripheral region of the forward opening of defrosting chamber 214, so that it is squeezed and deformed when device door body 220 is closed,
It is fitted closely with device door body 220, i.e., forms sealing between elastic conduction ring 280 and device door body 220.It is set to cylinder
210 electromagnetic shielding feature 217 and the electromagnetic shielding feature 217 for being set to device door body 220 can be respectively set to and elastic conducting
Electric 280 conductive contact of ring, to reduce the outside magnetic dispersion amount of thawing apparatus 200 when device door body 220 is closed.Some
In preferred embodiment, elastic conduction ring 280 can by silicone, silicone fluoride, EPDM, fluorocarbon-fluorine compound with
And silver coated aluminum is made.Elastic conduction ring 280 can be hollow annular construction so that its device door body 220 close when, with device
Door body 220 fits closely.The width of elastic conduction ring 280 can be 20~30mm, such as 20mm, 25mm or 30mm, to improve
The leakproofness of thawing apparatus 200.In some preferred embodiments, the device air inlet 215 of thawing apparatus 200, defrosting air inlet
2111 and device air outlet 218 can be provided with conductive metal mesh 290, conductive metal mesh 290 may be configured as and be set to cylinder
210 electromagnetic shielding feature 217 is conductively connected, to reduce the magnetic dispersion amount of thawing apparatus 200.
Particularly, in the present invention, the frequency for the radiofrequency signal that module 230 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 200 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 200 are all the same.
Thawing apparatus 200 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 270 in thawing apparatus 200, 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 200 judgement thaw complete (i.e. radio frequency generation module stop
Only work) time；Temperature uniformity: after the completion of defrosting, the temperature of four corners of beef and central point is measured respectively, and is calculated
The difference of the average value of central point temperature and four corners, temperature uniformity are the ratio of the difference and the average value；Juice stream
Mistake 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 weight before thawing with beef.
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 200 are all the same, under same test condition, using range of embodiment of the invention
The defrosting effect of the thawing apparatus 200 of interior rf frequency is better than the thawing apparatus 200 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 200 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 200
It reduces to 18min hereinafter, temperature uniformity is improved to 0.4 hereinafter, juice loss rate is reduced to 0.32% or less.
Fig. 8 is the flow chart of the defreezing method according to an embodiment of the invention for refrigerator 10.Referring to Fig. 8, this hair
The defreezing method of bright refrigerator 10 may include steps of:
Step S802: judging whether defrosting switch 113 is opened, if so, executing step S804；If it is not, executing step S802.
Step S804: power supply module 142 is started to work.
Step S806: whether judgment means door body 220 closes, if so, executing step S808；If it is not, executing step S806.
In this step, using the open and-shut mode of door opening detection device detection device door body 220.Door opening detection device can use fan
The various ways such as shape switch, magnet-sensitive switch, Hall switch are detected, and are closed completely or are opened the time-division in device door body 220
Different electric signals is not generated, with the state of instruction device door body 220.
Step S808: the radiofrequency signal that module 230 generates 40~42MHz occurs for radio frequency, and the detection connection of detection module 250 is penetrated
The incidence wave signal and reflection wave signal for the raw module 230 and the electrical wiring of electric pole plate 240a of taking place frequently.In this step, radio frequency is sent out
The frequency for the radiofrequency signal that raw module 230 generates is 40.68MHz.Execute step S810 and step S811.
Step S810: 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 S812: 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 S814；If it is not, executing step S810.
Step S814: the current operating power of module 230, which occurs, for radio frequency reduces by 30~40%.In this step, radio frequency is sent out
The operating power of raw module 230 reduces by 35%.
Step S816: 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 S818: 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 S820；If it is not, executing step S816.
Step S820: power supply module 142 stops working, and the switch 113 that thaws is resetted and (closed), and buzzer is started to work.
In this step, issuing audible signal using buzzer reminds user that defrosting is completed.
Step S822: judging whether object to be processed takes out out of defrosting chamber, if so, executing step S824；If not；It executes
Step S822.
Step S824: buzzer stops working.
Step S811: 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 230 that takes place frequently2。
Step S813: judge that the load impedance Z of module 230 occurs for radio frequency2With output impedance Z1Difference whether less than first
Impedance threshold, if so, executing step S815；If it is not, executing step S817.
Step S815: the motor work of load compensation module 260 increases the impedance of compensating unit.Return step S811.
Step S817: judge that the load impedance Z of module 230 occurs for radio frequency2With output impedance Z1Difference whether be greater than second
Impedance threshold, if so, executing step S819；If it is not, executing step S811.
Step S819: the motor work of load compensation module 260 reduces the impedance of compensating unit.Return step S811.
(it will be appreciated by those skilled in the art that ground, when program is run to step S820, power supply module 142 stops working, that is, stops supplying
Electricity, radio frequency occur module 230, detection module 250 and load compensation module 260 and stop working, i.e. Jie when object to be processed
When rate of change Δ ε/Δ t of electrostrictive coefficient drops below or equal to the second rate-valve value, detection module 250 stops detection connection and penetrates
The incidence wave signal and reflection wave signal for the raw module 230 and the electrical wiring of electric pole plate 240a of taking place frequently, load compensation module 260 are stopped
Only work.)
One defrosting workflow of the refrigerator 10 of one embodiment of the invention can include: when user opens the switch that thaws
113 and device door body 220 close when, power supply module 142 starts to power, radio frequency occur module 230 generate 40.68MHz radio frequency
Signal, detection module 250 and load compensation module 260 are started to work.Module 230 occurs for the detection connection radio frequency of detection module 250
With the incidence wave signal and reflection wave signal of the electrical wiring of electric pole plate, and the load impedance Z of RF transmitter 230 is calculated2
And rate of change Δ ε/Δ t of dielectric coefficient.When rate of change Δ ε/Δ t of the dielectric coefficient of object to be processed is more than or equal to first
When rate-valve value, the current operating power reduction by 35% of module 230 occurs for radio frequency, meanwhile, in entire defrosting workflow, when
The load impedance Z of radio frequency generation module 2302With output impedance Z1Difference less than the first impedance threshold or be greater than the second impedance threshold
When value, load compensation module 260 adjusts the impedance magnitude of compensating unit by motor, and then adjusts radio frequency and module 230 occurs
Load impedance Z2, make radio frequency that the load impedance Z of module 230 occur2With output impedance Z1Difference be always more than equal to the first impedance threshold
It is worth and is less than or equal to the second impedance threshold.When rate of change Δ ε/Δ t of the dielectric coefficient of object to be processed is less than or equal to the second speed
When rate threshold value, the stopping power supply of power supply module 142, the switch 113 that thaws is closed, and radio frequency occurs module 230, detection module 250 and bears
It carries compensating module 260 to stop working, buzzer is started to work, and when object to be processed takes out out of defrosting chamber 214, buzzer stops
Only work.
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 refrigerator, including defining the refrigerator room being sequentially distributed along the vertical direction of the refrigerator, alternating temperature compartment and cold
Freeze the cabinet and thawing apparatus of compartment, the thawing apparatus includes:
Cylinder inside defines the defrosting chamber with forward opening, and the defrosting chamber is for placing object to be processed；
Device door body is set at the forward opening of the defrosting chamber, for being opened and closed the defrosting chamber；
Module occurs for radio frequency, is configured to generate radiofrequency signal；With
Electric pole plate and lower electrode plate, horizontally are arranged at respectively at the roof and bottom wall of the defrosting chamber, and respectively with institute
It states radio frequency and module electrical connection occurs, the rf wave of corresponding frequencies is generated in the defrosting chamber according to the radiofrequency signal,
And the indoor object to be processed of the defrosting chamber that thaws；And
The thawing apparatus is set in the refrigerator room.
2. refrigerator according to claim 1, wherein
The back plate of the cylinder offers device air inlet, and the rear wall of the back plate of the cylinder and the refrigerator room there are
Gap, so that the indoor air of the refrigerator enters to the defrosting chamber via described device air inlet；And
The side plate of the both lateral sides of the cylinder offers device air outlet, and the side plate of the both lateral sides of the cylinder with it is described
There are gaps for the side wall of the both lateral sides of refrigerator room, so that the indoor gas of defrosting chamber is expelled to via device air outlet
The refrigerator room.
3. refrigerator according to claim 2, wherein
The rear wall of the cylinder and the side plate of both lateral sides and the rear wall of corresponding refrigerator room and the side wall of both lateral sides away from
From for 2~3mm.
4. refrigerator according to claim 2, wherein
The refrigerator is wind cooling refrigerator；
The refrigerator room includes air duct cover board, and the sandwiched formation of the liner rear wall of the air duct cover board and the refrigerator room refrigerates
Air duct, and refrigeration air inlet is offered on the air duct cover board, to provide cooling capacity for the refrigerator room；And
The refrigerator room defines multiple accommodation spaces, and the refrigeration air inlet is located at the receiving of the refrigerator room bottom
In space；
The thawing apparatus is set in the accommodation space of the bottom, in order to which the refrigeration air duct is the thawing apparatus
Cooling capacity is provided.
5. refrigerator according to claim 4, wherein
Described device air inlet is in the refrigeration air inlet in the projection on the thickness direction of the air duct cover board, in order to
The refrigeration air duct provides cooling capacity for the thawing apparatus.
6. refrigerator according to claim 1, the refrigerator further includes for being opened and closed the refrigerator room, alternating temperature compartment respectively
With refrigeration door body, alternating temperature door body and the freezing door body of freezing compartment；Wherein
The refrigeration door body is provided with the defrosting switch started or stopped for controlling thaw routine；And module occurs for the radio frequency
It is configured that
When the defrosting, which switchs, opens, start to work；
When the defrosting, which switchs, closes, stop working.
7. refrigerator according to claim 1, further includes:
Detection module is configured to detection and connects the incidence wave signal that the electrical wiring of module and the electric pole plate occurs for the radio frequency
And reflection wave signal, and according to the voltage and current of the incidence wave signal and the voltage and current of the reflection wave signal,
The rate of change of the dielectric coefficient of the object to be processed is calculated, to judge the defrosting progress of the object to be processed.
8. refrigerator according to claim 7 is configured that wherein module occurs for the radio frequency
When the rate of change of the dielectric coefficient of the object to be processed is more than or equal to first rate threshold value, operating power is reduced
30%~40%, to prevent the object to be processed from excessively being thawed；And/or
When the rate of change of the dielectric coefficient of the object to be processed drops below or equal to the second rate-valve value, stop working.
9. refrigerator according to claim 8, wherein the thawing apparatus further include:
Infrared sensor is set on the inner wall of the defrosting chamber, with sense whether be placed in the defrosting chamber it is described
Object to be processed.
10. refrigerator according to claim 9, wherein the refrigerator is configured that
When 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, view is issued
Feel and/or audible signal reminds user；
When the object to be processed controllably takes out out of described defrosting chamber, stop issuing the vision and/or audible signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419637.8A CN109000404B (en) | 2017-06-06 | 2017-06-06 | Refrigerator with a door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419637.8A CN109000404B (en) | 2017-06-06 | 2017-06-06 | Refrigerator with a door |
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| Publication Number | Publication Date |
|---|---|
| CN109000404A true CN109000404A (en) | 2018-12-14 |
| CN109000404B CN109000404B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710419637.8A Active CN109000404B (en) | 2017-06-06 | 2017-06-06 | Refrigerator with a door |
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| Country | Link |
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| CN (1) | CN109000404B (en) |
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|---|---|---|---|---|
| WO2020140722A1 (en) * | 2019-01-04 | 2020-07-09 | 海尔智家股份有限公司 | Refrigeration and freezing apparatus |
| CN113915857A (en) * | 2020-12-02 | 2022-01-11 | 海信（山东）冰箱有限公司 | Radio frequency thawing refrigerator |
| CN113932551A (en) * | 2020-07-13 | 2022-01-14 | 青岛海尔电冰箱有限公司 | Refrigerator temperature control method and refrigerator |
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| US20170055769A1 (en) * | 2015-09-01 | 2017-03-02 | Illinois Tool Works, Inc. | Multi-functional rf capacitive heating food preparation device |
| WO2017065533A1 (en) * | 2015-10-13 | 2017-04-20 | 삼성전자 주식회사 | Cooking apparatus and method for controlling same |
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| US20080282714A1 (en) * | 2007-05-17 | 2008-11-20 | Electrolux Home Products, Inc. | Refrigerator defrosting and chilling compartment |
| US20170055769A1 (en) * | 2015-09-01 | 2017-03-02 | Illinois Tool Works, Inc. | Multi-functional rf capacitive heating food preparation device |
| WO2017065533A1 (en) * | 2015-10-13 | 2017-04-20 | 삼성전자 주식회사 | Cooking apparatus and method for controlling same |
| CN105605857A (en) * | 2016-03-09 | 2016-05-25 | 青岛海尔股份有限公司 | Refrigerator |
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| WO2020140722A1 (en) * | 2019-01-04 | 2020-07-09 | 海尔智家股份有限公司 | Refrigeration and freezing apparatus |
| CN113932551A (en) * | 2020-07-13 | 2022-01-14 | 青岛海尔电冰箱有限公司 | Refrigerator temperature control method and refrigerator |
| CN113915857A (en) * | 2020-12-02 | 2022-01-11 | 海信（山东）冰箱有限公司 | Radio frequency thawing refrigerator |
| CN113915857B (en) * | 2020-12-02 | 2023-04-28 | 海信冰箱有限公司 | Radio frequency thawing refrigerator |
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|---|---|
| CN109000404B (en) | 2020-06-23 |
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Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: Qingdao Haier Joint Stock Co.,Ltd. |