CN207081264U - Refrigerator - Google Patents
Refrigerator Download PDFInfo
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- CN207081264U CN207081264U CN201720649536.5U CN201720649536U CN207081264U CN 207081264 U CN207081264 U CN 207081264U CN 201720649536 U CN201720649536 U CN 201720649536U CN 207081264 U CN207081264 U CN 207081264U
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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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- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Electric Ovens (AREA)
Abstract
The utility model provides a kind of refrigerator.The refrigerator, including the casing and thawing apparatus of compressor room and at least one receiving space are defined, thawing apparatus includes：Define with the preceding cylinder for being used to place the defrosting chamber of pending thing to opening；It is arranged at the device door body for being used to be opened and closed defrosting chamber of the forward direction opening of defrosting chamber；Module occurs for the radio frequency for being configured to produce radiofrequency signal；It horizontally be arranged at respectively at the roof and bottom wall of defrosting chamber, and the electric pole plate and bottom electrode plate that module electrically connects occur with radio frequency respectively, to produce the rf wave of corresponding frequencies in defrosting chamber according to radiofrequency signal；And refrigerator also includes：Power supply module, it is arranged in compressor room, thinks that module for power supply occurs for radio frequency.The utility model is not only convenient for the maintenance of power supply module, is also convenient for the radiating of power supply module, reduce the fault rate of power supply module by will be arranged at for the power supply module that thawing apparatus is powered in the compressor room of refrigerator.
Description
Technical field
Defrosting field is the utility model is related to, more particularly to a kind of refrigerator with defrosting function.
Background technology
During freezing, the quality of food is kept food, but the food freezed is before processing or be edible
Need to thaw.For the ease of user's freezing and thawed foodstuff, prior art in refrigerator typically by setting heater or micro-
Wave apparatus carrys out thawed foodstuff.
However, longer thawing time is generally required, and thawing time and temperature are not come thawed foodstuff by heater
Easily grasp, easily cause the moisture evaporation and juice loss of food, the quality of food is incurred loss；Solved by microwave device
Freeze food, speed is fast, efficiency high, 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 skewness of food, 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.Consider, need one kind that there is high defrosting efficiency, thaw uniformly and can ensure to eat in design
The refrigerator of article matter.
Utility model content
A purpose of the present utility model is to provide for a kind of refrigerator of the thawing apparatus with less trouble.
The utility model one is further objective is that the defrosting efficiency of refrigerator will be improved.
The utility model another further objective is that to avoid pending thing from too being thawed.
Especially, the utility model provides a kind of refrigerator, including defines compressor room and at least one receiving space
Casing and be arranged at the thawing apparatus of a receiving space, the thawing apparatus includes：
Cylinder, defined in it and be used to place pending thing with the preceding defrosting chamber to opening, the defrosting chamber；
Device door body, the forward direction opening of the defrosting chamber is arranged at, for being opened and closed the defrosting chamber；
Module occurs for radio frequency, is configured to produce radiofrequency signal；With
Electric pole plate and bottom electrode plate, it horizontally be arranged at respectively at the roof and bottom wall of the defrosting chamber, and respectively
Module occurs with the radio frequency to electrically connect, to produce the radio frequency of corresponding frequencies in the defrosting chamber according to the radiofrequency signal
Ripple, and the pending thing in the defrosting chamber that thaws；And the refrigerator also includes：
Power supply module, it is arranged in the compressor room, thinks that module for power supply occurs for the radio frequency.
Alternatively, the power supply module is fixed on the upper wall of the compressor room, in order to the radio frequency occur module with
The electrical connection of the power supply module.
Alternatively, the power supply module is DC-DC converter；And the DC-DC converter be arranged to it is described for controlling
The master control borad electrical connection of refrigerator operation, thinks that module for power supply occurs for the radio frequency.
Alternatively, the compressor room includes the master control borad, compressor and the condensation water collection structure set gradually；Its
In
The DC-DC converter is arranged between the master control borad and the compressor, in order to the DC-DC converter with
The electrical connection of the master control borad.
Alternatively, the back plate of the cylinder offers first and crosses line mouth, so that the electrical wiring of module occurs for the radio frequency certainly
Described first, which crosses line mouth, draws, and is connected with the power supply module.
Alternatively, the refrigerator also includes being used for the compartment door body for being opened and closed at least one receiving space respectively, wherein
The compartment door body is provided with the defrosting switch for controlling thaw routine to start or stop；And the radio frequency occurs
Module is configured to：
When the switch that thaws is opened, start working；
When the switch that thaws is closed, it is stopped.
Alternatively, the thawing apparatus also includes：
Detection module, it is configured to detection and connects the incidence wave that module and the electrical wiring of the electric pole plate occur 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, calculate the load impedance that module occurs for the radio frequency.
Alternatively, the thawing apparatus also includes：
Load compensation unit, the radio frequency can controllably be increased or reduce by, which being configured to, occurs the load impedance of module, and makes
The load impedance of module occurs for the radio frequency and the difference of output impedance is in a preset range, to improve the pending thing
Defrosting efficiency.
Alternatively, the preset range is arranged to -5%~the 5% of the output impedance of the radio frequency generation module.
Alternatively, the detection module is configured to further according to occurring the load impedance calculating of module for the radio frequency
The rate of change of the dielectric coefficient of pending thing；And
The radio frequency occurs module and is configured to：
When the rate of change of the dielectric coefficient of the pending thing is more than or equal to first rate threshold value, its operating power drop
Low 30%~40%, to prevent that the pending thing from excessively being thawed；And/or
When the rate of change of the dielectric coefficient of the pending thing is deteriorated to less than equal to the second rate-valve value, stop work
Make.
The utility model for the power supply module that thawing apparatus is powered by will be arranged in the compressor room of refrigerator, not only just
In the maintenance of power supply module, the radiating of power supply module is also convenient for, reduces the fault rate of power supply module.
Further, the incidence wave of module and the electrical wiring of electric pole plate occurs by detecting connection radio frequency for the utility model
Signal and reflection wave signal, it is computed drawing the load impedance that module occurs for radio frequency, occupies little space and cost is low, it is particularly suitable
Thawing apparatus in refrigerator.And radio frequency is set to occur at the load impedance of module and the difference of output impedance by load compensation unit
In the defrosting efficiency that in a preset range, further increasing pending thing.
Further, the utility model calculates the rate of change of the dielectric coefficient of pending thing by detection module, to sentence
The defrosting progress of disconnected pending thing.Before the utility model, those skilled in the art are it is believed that when the temperature of pending thing
When higher (temperature of i.e. pending thing is more than or equal to -7 DEG C), fuel factor can significantly decay, thus pending thing will not be by mistake
Decompose and freeze.But actual conditions are really not so, usual radio frequency defrosting power is larger, is greater than 100W, when the sheet of pending thing
When body temperature is higher, pending thing is easily excessively thawed.The utility model people of the application creatively recognizes, when waiting to locate
When the temperature of reason thing is higher, radio frequency to that the operating power of module, which occur, reduces by 30~40%, can effectively prevent pending thing
Too thawed.Further, the utility model judges whether defrosting is complete by the rate of change of the dielectric coefficient of pending thing
Into compared to judging whether defrosting is completed by sensing the temperature of pending thing in the prior art, it is more accurate to judge, can enter
One step prevents that pending thing from too being thawed, and test shows, the pending thing to be thawed by thawing apparatus of the present utility model, solution
Freeze temperature when completing and be generally -4~-2 DEG C, can avoid when pending thing is meat, thaw and produce watery blood.
According to the accompanying drawings will be more to the detailed description of the utility model specific embodiment, those skilled in the art
Add clear of the present utility model above-mentioned and other purposes, advantages and features.
Brief description of the drawings
It is described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter more of the present utility model specific real
Apply example.Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that
What these accompanying drawings were not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is that wherein the refrigerator is all outer according to the schematic diagram of the refrigerator of the utility model one embodiment
Door body 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 intercepted along the cutting line B-B in Fig. 3；
Fig. 5 is the rate of change curve map according to the dielectric coefficient of the pending thing of the utility model one embodiment；
Fig. 6 is the schematic diagram of Tu2Zhong compressor room；
Fig. 7 is the schematic diagram of thawing apparatus in Fig. 3, and the device door body of the wherein thawing apparatus is removed, to show
Go out the internal structure of cylinder；
Fig. 8 is the flow chart according to the defreezing method for refrigerator of the utility model one embodiment.
Embodiment
Fig. 1 is the institute according to the schematic diagram of the refrigerator 10 of the utility model one embodiment, the wherein refrigerator 10
There is outer door body to be all removed, with cell structure between showing in the casing 100 of refrigerator 10；Fig. 2 is the schematic of refrigerator 10 shown in Fig. 1
Sectional view；Fig. 3 is the schematic partial enlarged view of region A in Fig. 2.Referring to Fig. 1 to Fig. 3, refrigerator 10 may include to limit in general manner
Surely there are the casing 100 of at least one receiving space, the compartment door body for picking and placeing mouth for being opened and closed each receiving space respectively, and
It is arranged at the thawing apparatus 200 of a receiving space.In the illustrated embodiment, the quantity of thawing apparatus 200 is one.
Specifically, thawing apparatus 200 may include that module 230 and upper electricity occur for cylinder 210, device door body 220, radio frequency
Pole plate 240a and bottom electrode plate 240b.Cylinder 210 may include top plate, bottom plate, back plate and relative two horizontal side plates, in it
It can define and be used to place pending thing with the preceding defrosting chamber 214 to opening, defrosting chamber 214.Device door body 220 can be set
The forward direction opening of defrosting chamber 214 is placed in, for opening or closing 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 produce radiofrequency signal (referring generally to radiofrequency signal of the frequency in 300KHz~300GHz).Electric pole plate 240a and bottom electrode plate
240b can horizontally be arranged at the roof and bottom wall of defrosting chamber 214 respectively, and module 230 occurs with radio frequency respectively and is electrically connected
Connect, produce the rf wave of relevant parameter in defrosting chamber 214 with the radiofrequency signal according to caused by radio frequency generation module 230, and
Thaw the pending thing being positioned in defrosting chamber 214.In the utility model, electric pole plate 240a is transmitting antenna；Lower electricity
Pole plate 240b is reception antenna.In certain embodiments, electric pole plate 240a and bottom electrode can be made using 50 ohm of electrical wiring
Plate 240b occurs module 230 with radio frequency respectively and electrically connected.
Especially, refrigerator 10 also includes being used for the power supply module 142 that module 230 occurs and powers for radio frequency.Power supply module 142
It is arranged in the compressor room 140 of refrigerator 10, is not only convenient for the maintenance of power supply module 142, is also convenient for dissipating for power supply module 142
Heat, reduce the fault rate of power supply module 142.
In certain embodiments, thawing apparatus 200 may also include detection module 250.Detection module 250 can be configured to detect
Module 230 and electric pole plate 240a electrical wiring occurs for radio frequency incidence wave signal and reflection wave signal are connected, and according to incidence
The voltage and current of ripple 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 (I)
Z1=U1/I1=R1+jX1 (2)
Z2=U2/I2=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, for connection radio frequency module 230 occurs those skilled in the art for output impedance
With the impedance of electric pole plate 240a electrical wiring, load impedance is the impedance of pending thing).
Thawing apparatus 200 may also include load compensation module 260.Load compensation module 260 may include a compensating unit and
For the motor for the impedance for adjusting compensating unit.Compensating unit may be configured as connecting with pending thing, i.e., now mould occurs for radio frequency
The load impedance of block 230 for pending thing impedance and compensating unit impedance and.Motor can be configured to controllably increase or
Reduce the impedance of compensating unit, and then increase or reduce 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 pre- in one
If in scope, to improve the defrosting efficiency of pending thing.Preset range 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 impedance threshold.In some preferred embodiments, the first impedance threshold
For output impedance Z1- 6~-4%, the second impedance threshold is output impedance Z14~6%.It is further preferred that the first impedance
Threshold value is output impedance Z1- 5%, the second impedance threshold is output impedance Z15%.In other words, load compensation module can match somebody with somebody
It is set to the load impedance Z for making radio frequency that module 230 occur2With output impedance Z1Difference absolute value, in whole course of defrosting always
Less than output impedance Z15%, such as can be output impedance Z11%, 3% or 5%.
Detection module 250 can be configured to further according to radio frequency occur the load impedance Z of module 2302, calculate pending thing
Dielectric coefficient and dielectric coefficient rate of change, to judge the defrosting progress of pending thing.The dielectric coefficient of pending thing
Calculation formula is as follows：
X2=1/2 π fC (4)
The π KdC/S (5) of ε=4
In formula (4), (5)：F is the frequency of rf wave；C is the electricity that electric pole plate 240a and bottom electrode plate 240b is formed
The electric capacity of container；ε is the dielectric coefficient of pending thing；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 pending thing can pass through the change of the dielectric coefficient ε in unit of account time Δ t
It is worth Δ ε to obtain, wherein unit interval 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 this practicality
(ordinate is the dielectric coefficient of pending thing to the rate of change curve map of the dielectric coefficient of the pending thing of new one embodiment
Rate of change Δ ε/Δ t；Abscissa is the thawing time t, unit min of pending thing).It is preferred real at some referring to Fig. 5
Apply in example, radio frequency occurs module 230 and can be configured to when rate of change Δ ε/Δ t of the dielectric coefficient of pending thing is more than or equal to the
During one rate-valve value, its operating power reduces by 30%~40%, such as 30%, 35% or 40%, to prevent pending thing by mistake
Degree thaws (those skilled in the art understandably, are excessively thawed and are more than 0 DEG C for the temperature of pending thing).First rate threshold value
Can be 15~20, such as 15,17,18 or 20.Radio frequency occurs module 230 and may be additionally configured to when the change of the dielectric coefficient of pending thing
When change speed Δ ε/Δ t is deteriorated to less than equal to the second rate-valve value, it is stopped.Second rate-valve value can be 1~2, such as
1st, 1.5 or 2.
With the temperature change of pending thing, the dielectric coefficient of pending thing can also change therewith, be people in the art
Member is known, but dielectric coefficient is generally measured by instrumentation (such as dielectric coefficient tester), and instrumentation takes sky
Between it is big, cost is high, be not suitable for refrigerator.By detecting connection radio frequency module 230 and electric pole plate 240a occurs for the utility model
Electrical wiring incidence wave signal and reflection wave signal, be computed drawing the dielectric coefficient of pending thing, occupy little space and into
This is low, especially suitable for the thawing apparatus in refrigerator.And make the load of radio frequency generation module 230 by load compensation module 260
The difference of impedance and output impedance is in a preset range and (is more than or equal to one first impedance threshold and is less than or equal to one second impedance threshold
Value) it is interior, improve the defrosting efficiency of pending thing.
Further, the utility model calculates the rate of change of the dielectric coefficient of pending thing by detection module 250, comes
Judge the defrosting progress of pending thing.Before the utility model, those skilled in the art are it is believed that when the temperature of pending thing
During degree higher (temperature of i.e. pending thing more than or equal to -7 DEG C), fuel factor can significantly decay, thus pending thing will not be by
It is undue to thaw.But actual conditions are really not so, usual radio frequency defrosting power is larger, is greater than 100W, when pending thing
When self-temperature is higher, pending thing is easily excessively thawed.The utility model people of the application creatively recognizes, when treating
When the temperature of processed material is higher, radio frequency to that the operating power of module 230, which occur, reduces by 30~40%, can effectively prevent from waiting to locate
Reason thing is too thawed.Further, the utility model judges that defrosting is by the rate of change of the dielectric coefficient of pending thing
No completion, compared to judging whether defrosting is completed by sensing the temperature of pending thing in the prior art, it is more accurate to judge,
It can further prevent that pending thing from too being thawed, and test shows, is thawed by thawing apparatus of the present utility model pending
Thing, the temperature thawed when completing are generally -4~-2 DEG C, can avoided when pending thing is meat, thaw and produce watery blood.
In certain embodiments, it may be provided with what is started or stop for controlling thaw routine in any one compartment door body
Thaw switch 124.Radio frequency occurs module 230 and can be configured to, when the switch 124 that thaws is opened, start working；When the switch 124 that thaws
During closing, it is stopped.In course of defrosting, user can thaw switch 124 to terminate thaw routine by closing.It is excellent at some
Select in embodiment, the refrigeration system of refrigerator 10 can be configured to, when the switch 124 that thaws is opened, stop to be provided with thawing apparatus
200 receiving space provides cold；When the switch 124 that thaws is closed, the former refrigerant sequence of refrigerator 10 is run, is being thawed with reducing
Device 200 thaw pending thing when, the influence of the refrigeration system of refrigerator 10 to the temperature of defrosting chamber 214.Wherein refrigerator 10
Refrigeration system may include compressor, condenser, capillary and the evaporator for providing cold.In any one compartment door body also
Buzzer (not shown) is may be provided with, for prompting the pending thing of user to thaw completion.Buzzer can be configured to when inspection
Survey module 250 and judge pending thing to thaw when completing that (rate of change of the dielectric coefficient of pending thing is deteriorated to less than equal to the
During two rate-valve values), start working；When pending thing takes out from defrosting chamber 214, it is stopped.Defrosting chamber 214
Infrared sensor is may be provided with inwall, thing to be handled whether is placed in defrosting chamber 214 to sense.
Fig. 6 is the schematic diagram of Tu2Zhong compressor room 140.Referring to Fig. 6, compressor room 140 may include to set gradually
The master control borad 143, compressor 141, condensation water collection structure 144 and for being transported for refrigerator 10 that are used to control refrigerator 10 to run
The circumscripted power line (not shown) of row power supply.Power supply module 142 is securable to the upper wall of compressor room 140, in order to penetrate
The raw module 230 that takes place frequently and the electrical connection of power supply module 142.In certain embodiments, power supply module 142 can be DC-DC converter.
DC-DC converter may be configured as electrically connecting with master control borad 143, think that thawing apparatus 200 is powered.DC-DC converter may be disposed at master
Control between plate 143 and compressor 141, so that it is more convenient with the electrical connection of master control borad 143.In further embodiments, supply
Electric module 142 can be ACDC converters.ACDC converters may be configured as electrically connecting with the external power supply of refrigerator 10.Art technology
Personnel understandably, by all parts of thawing apparatus 200 are connected to be connected with the control circuit of refrigerator 10 easily to be realized.
Fig. 4 is the schematic cross sectional views intercepted along the cutting line B-B in Fig. 3.Referring to Fig. 3 and Fig. 4, cylinder 210 can also wrap
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
Vertically direction extends to the bottom plate of cylinder 210 to the top plate of body 210.Radio frequency occurs module 230 and may be disposed at the He of vertical baffle 211
Between the back plate of cylinder 210.Horizontal baffle 212 may be configured as in the horizontal direction extending forward from vertical baffle 211.Detection module
250 and load compensation module 260 may be disposed between the top plate of horizontal baffle 212 and cylinder 210.Defrosting chamber 214 can be by erecting
Surrounded to dividing plate 211, the bottom plate of horizontal baffle 212 and cylinder 210 and two horizontal side plates.Electric pole plate 240a may be disposed at
The lower surface of horizontal baffle 212, bottom electrode plate 240b may be disposed at the upper surface of the bottom plate of cylinder 210.Cylinder 210 may also include
From the anterior end of horizontal baffle 212 vertically direction extend upwardly to cylinder 210 top plate baffle plate 213, to prevent from detecting
Module 250 and load compensation module 260 are exposed, reduce the aesthetic property of thawing apparatus 200.
The back plate of cylinder 210 can offer first and cross line mouth 216, so as to cross line mouth 216 from power supply module 142 via first
Module 230 occurs with radio frequency to electrically connect.Vertical baffle 211 can offer second and cross line mouth 2112, so that module 230 occurs for radio frequency
Line mouth 2112 is crossed via second to electrically connect with electric pole plate 240a.
In certain 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 being provided with the receiving space of thawing apparatus 200 via
Device air inlet 215 and defrosting air inlet 2111 enter to the defrosting chamber 214 of thawing apparatus 200.The both lateral sides of cylinder 210
Side plate can offer device air outlet 218 so that the gas in defrosting chamber 214 is expelled to appearance via device air outlet 218
Receive space.The back plate of cylinder 210 can leave gap with the rear wall of corresponding receiving space, in order to the air in the receiving space
Enter in thawing apparatus 200.The side plate of the both lateral sides of cylinder 210 can be with the side wall of the both lateral sides of corresponding receiving space
Gap is left, in order to which the gas in thawing apparatus 200 is expelled in the receiving space.When refrigerator 10 is direct cooling refrigerator, hold
Receive space rear wall be its inner bag rear wall；When refrigerator 10 is wind cooling refrigerator, the rear wall of receiving space is its interior air duct cover board
Preceding surface.The utility model on thawing apparatus 200 by being provided with device air inlet 215 and device air outlet 218, not
When receiving defrosting instruction, defrosting chamber 214 can be used to place food materials, the storage space in refrigerator 10 is obtained sufficient profit
With.
In some preferred embodiments, the back plate of cylinder 210 and the side plate of both lateral sides with after corresponding receiving space
The distance of the side wall of wall and both lateral sides can be 2~3mm, such as 2mm, 2.5mm or 3mm, to ensure that thawing apparatus 200 has
While appropriate intake and air output, ensure that defrosting chamber 214 has larger dischargeable capacity.
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 radiating 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.
Thawing apparatus 200 may also include pallet 270.Pallet 270 is arranged in defrosting chamber 214, and pending thing 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 pending
The placement and taking-up of thing.In some preferred embodiments, the lower surface of pallet 270 and bottom electrode plate 240b distance can be 8~
12mm, such as 8mm, 10mm, 12mm, to prevent during the pull of pallet 270, friction is produced with bottom electrode plate 240b.
Referring to Fig. 1 to Fig. 3, in certain embodiments, the quantity of the receiving space of refrigerator 10 can be three.Specifically, ice
Case 10 may include the casing 100 for defining refrigerator room 110, alternating temperature compartment 120 and freezing compartment 130, and be respectively used to out
Close refrigeration door body 111, alternating temperature door body 121 and the freezing door body 131 of refrigerator room 110, alternating temperature compartment 120 and freezing compartment 130.
Thawing apparatus 200 may be disposed in alternating temperature compartment 120.Thawing apparatus 200 can pass through the inwall with 120 vertical both sides of alternating temperature compartment
The mode such as interference fit or clamping is fixed in alternating temperature compartment 120.The switch 124 that thaws may be disposed in alternating temperature door body.
In addition, also explicable be, knownly, refrigerator room 110 refers to the preservation to food materials to those skilled in the art
Temperature is 0~+8 DEG C of storing compartment；Freezing compartment 130 refers to the storing that the preservation temperatures of food materials is -20~-15 DEG C
Room；Alternating temperature compartment 120 refer to can to a wide range (such as adjusting range can more than 4 DEG C, and be adjustable to more than 0 DEG C or 0 DEG C with
Under) change the storing compartment of its preservation temperature, its general preservation temperature may span across refrigeration, soft freezing (being generally -4~0 DEG C) and
Cryogenic temperature, it is preferably -16~+4 DEG C.
In certain embodiments, can be wind cooling refrigerator according to refrigerator 10 of the present utility model, alternating temperature compartment 120 may include
Air duct cover board 122.The sandwiched formation alternating temperature air channel of inner bag rear wall of air duct cover board 122 and alternating temperature compartment 120, and air duct cover board 122
On offer alternating temperature air inlet 1221, for for alternating temperature compartment 120 provide cold.In some preferred embodiments, thawing apparatus
200 device air inlet 215 can be connected with alternating temperature air inlet 1221 by a connecting tube 123, in order to be thawing apparatus 200
Defrosting chamber 214 is freezed.In other preferred embodiments, the device air inlet 215 of thawing apparatus 200 is in cylinder 210
Back plate thickness direction on projection can be in alternating temperature air inlet 1221, in order to the defrosting chamber for thawing apparatus 200
214 are freezed.
Alternating temperature inlet air door 1222 is may be provided with alternating temperature air inlet 1221, for turning on or blocking alternating temperature air channel.Alternating temperature
Inlet air door 1222 can be configured to：When radio frequency generation module 230 is in running order, alternating temperature inlet air door 1222 is closed, i.e.,
Alternating temperature air channel stops providing cold for alternating temperature compartment 120, and to avoid thawing to thawing apparatus 200, pending thing impacts；Penetrate
When the raw module 230 that takes place frequently is in off working state, alternating temperature inlet air door 1222 is opened, i.e., alternating temperature air channel can be alternating temperature compartment 120
Cold is provided, defrosting chamber 214 is used to place food materials.
Fig. 7 is the schematic diagram of thawing apparatus 200 in Fig. 3, and the device door body of the wherein thawing apparatus is removed, with
The internal structure of cylinder is shown.Referring to Fig. 7, thawing apparatus 200 may also include elastic conduction ring 280.Elastic conduction ring 280
The peripheral region of the forward direction opening of defrosting chamber 214 is may be disposed at, so that crimp occurs when device door body 220 is closed in it,
It is brought into close contact with device door body 220, i.e., sealing is formed between elastic conduction ring 280 and device door body 220.It is preferred real at some
Apply in example, elastic conduction ring 280 can be by silicone, silicone fluoride, EPDM, fluorocarbon-fluorine compound and silver-plated
Aluminium is made.Elastic conduction ring 280 can be hollow annular construction, make it when device door body 220 is closed, with device door body 220
It is brought into close contact.The width of elastic conduction ring 280 may be configured as 20~30mm, such as 20mm, 25mm or 30mm, be thawed with improving
The sealing of device 200.Cylinder 210 and device door body 220 can be respectively arranged with electromagnetic shielding feature 217.It is arranged at cylinder 210
Electromagnetic shielding feature 217 and be arranged at the electromagnetic shielding feature 217 of device door body 220 and can be respectively set to and elastic conduction ring
280 conductive contacts are enclosed, when device door body 220 is closed, to reduce the outside magnetic dispersion amount of thawing apparatus 200, are reduced to human body
Caused by harm.Electromagnetic shielding feature 217 can be the inner surface of inwall and device door body 220 coated on cylinder 210 (towards cylinder
The surface of body 210) conductive coating, be posted by cylinder 210 inwall and device door body 220 inner surface conductive metal mesh or
Conductive metal mesh being formed in the neutralization device gate body 220 for each plate body for surrounding cylinder 210 etc..In some preferred embodiments
In, device air inlet 215, defrosting air inlet 2111 and the device air outlet 218 of thawing apparatus 200 can be provided with conducting metal
Net 290, the electromagnetic shielding feature 217 that conductive metal mesh 290 may be configured as and be arranged at cylinder 210 are conductively connected, to reduce solution
Freeze the magnetic dispersion amount of device 200.
Especially, in the utility model, the frequency that radiofrequency signal caused by module 230 occurs for radio frequency (is used to thaw
The electromagnetic wave of pending thing) can be 40~42MHz, such as 40MHz, 40.48MHz, 40.68MHz, 41MHz or 42MHz, to subtract
The thawing time for processed material of waiting a little while,please, improve the temperature homogeneity of pending thing and reduce its juice loss rate.In preferred embodiment
In, the frequency of rf wave can be a default fixed frequency in the range of 40.48~40.68MHz, pending further to reduce
The thawing time of thing, improve the temperature homogeneity of pending thing and reduce its juice loss rate.Wherein, when the frequency of rf wave is
During 40.68MHz, defrosting effect is best.
For a further understanding of the utility model, it is preferable to carry out with reference to more specifically embodiment to of the present utility model
Scheme is described, but the utility model is not limited to these embodiments.
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 with the thawing apparatus 200 of above-described embodiment 1-5 and comparative example 1-2 rf frequency, rf wave
Power is 100W, the structure and its workflow all same of thawing apparatus 200.
To the thawing apparatus 200 for the frequency for being provided with each embodiment and each comparative example, defrosting measure of merit is carried out.Test is said
It is bright：It is identical from 1kg shape specifications, and initial temperature is -18 DEG C of beef, it is respectively placed in each embodiment and each comparative example
On pallet 270 in thawing apparatus 200, thawing time, temperature homogeneity and the liquid of each embodiment and each comparative example are measured respectively
Juice turnover rate, wherein thawing time be from thaw, to thawing apparatus 200 judge thaw complete (i.e. radio frequency generation module stop
Only work) time；Temperature homogeneity：After the completion of defrosting, the temperature of four corners of beef and central point is measured respectively, and is calculated
Central point temperature and the difference of the average value of four corners, temperature homogeneity are the difference and the ratio of the average value；Juice stream
Mistake rate：The weight before beef thaws and the weight after defrosting are measured respectively, and calculates the two difference, and juice loss rate is the difference
The ratio of weight before being thawed with beef.
According to embodiment 1-7 and the defrosting measure of merit result such as table 2 according to comparative example 1-2.
Table 2
| Thawing time (min) | Temperature homogeneity | 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 that power in rf wave can be seen that according to the test result of embodiment 5 in table 2 and comparative example 1, and thaw
In the case of the structure and its workflow all same of device 200, under equal test condition, using the utility model embodiment
In the range of rf frequency thawing apparatus 200 defrosting effect be better than application rf frequency of the prior art thawing apparatus
200, the former reduces 20% than the thawing time of the latter, and temperature homogeneity improves 17%.
Thawing apparatus using various embodiments of the utility model can be seen that according to the test result of embodiment 1-5 in table 2
200 thawing time is in below 20min, and temperature homogeneity is below 0.5, and juice loss rate is below 0.40%.It is logical
The frequency (such as rf frequency is in 40.48~40.68MHz) of further preferred rf wave is crossed, can be by the defrosting of thawing apparatus 200
Time is reduced to below 18min, and temperature homogeneity is improved to less than 0.4, and juice loss rate is reduced to less than 0.32%.
Fig. 8 is the flow chart according to the defreezing method for refrigerator 10 of the utility model one embodiment.Referring to Fig. 8,
The defreezing method of refrigerator 10 of the present utility model may include steps of：
Step S802：Judge to thaw and switch whether 124 open, if so, performing step S804；If it is not, perform step S802.
Step S804：Power supply module 142 is started working.
Step S806：Whether judgment means door body 220 closes, if so, performing step S808；If it is not, perform step S806.
In this step, using the open and-shut mode of door opening detection device detection means door body 220.Door opening detection device can utilize fan
The various ways such as shape switch, magnet-sensitive switch, Hall switch are detected, and in the closure completely of device door body 220 or are opened the time-division
Different electric signals is not produced, with the state of instruction device door body 220.
Step S808：Refrigeration system stops providing cold to be provided with the receiving space of thawing apparatus 200, and mould occurs for radio frequency
Block 230 produces 40~42MHz radiofrequency signal, and module 230 and electric pole plate 240a occurs for the detection connection radio frequency of detection module 250
Electrical wiring incidence wave signal and reflection wave signal.Operating procedure S810 and step S811.In this step, thawing apparatus
200 are arranged in alternating temperature compartment 120, and the radiofrequency signal that module 230 produces 40.68MHz occurs for radio frequency.
Step S810：Obtain the voltage and current of incidence wave signal and the voltage and current of reflection wave signal, calculating are treated
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 pending thing is more than or equal to first rate
Threshold value, if so, performing step S814；If it is not, perform step S810.
Step S814：The operating power that module 230 occurs for radio frequency reduces by 30%~40%.In this step, radio frequency occurs
The operating power of module 230 can reduce by 35%.
Step S816：Obtain the voltage and current of incidence wave signal and the voltage and current of reflection wave signal, calculating are treated
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 pending thing is less than or equal to the second speed
Threshold value, if so, performing step S820；If it is not, perform step S816.
Step S820：Power supply module 142 is stopped, and the switch 124 that thaws resets and (closed), runs the original of refrigerator 10
Refrigerant sequence, buzzer are started working.
Step S822：Judge whether pending thing takes out out of defrosting chamber 214, if so, performing step S824；If not；
Perform step S822.
Step S824：Buzzer is stopped.
Step S811：Obtain 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 be less than first
Impedance threshold, if so, performing step S815；If it is not, perform step S817.
Step S815：The motor work of load compensation module 260, increase the impedance of compensating unit.Return to step S811.
Step S817：Judge that the load impedance Z of module 230 occurs for radio frequency2With output impedance Z1Difference whether be more than second
Impedance threshold, if so, performing step S819；If it is not, perform step S811.
Step S819：The motor work of load compensation module 260, reduces the impedance of compensating unit.Return to 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 is stopped,
Stop power supply, radio frequency occurs module 230, detection module 250 and load compensation module 260 and is stopped, i.e., ought wait to locate
When rate of change Δ ε/Δ t of the dielectric coefficient of reason thing is deteriorated to less than equal to the second rate-valve value, detection module 250 stops inspection
Survey module 230 and electric pole plate 240a electrical wiring occurs for connection radio frequency incidence wave signal and reflection wave signal, load compensation
Module 260 is stopped.
One defrosting workflow of the refrigerator 10 of the utility model one embodiment may include：Opened when user opens defrosting
When closing 124 and the closing of device door body 220, power supply module 142 starts to power, and the refrigeration system of refrigerator 10 stops to be provided with defrosting
The receiving space of device 200 provides cold, and the radiofrequency signal that module 230 produces 40.68MHz, the He of detection module 250 occur for radio frequency
Load compensation module 260 is started working.Module 230 and electric pole plate 240a electricity occurs for the detection connection radio frequency of detection module 250
The incidence wave signal and reflection wave signal of line, and calculate the load impedance Z of RF transmitter 2302And the change of dielectric coefficient
Change speed Δ ε/Δ t.When rate of change Δ ε/Δ t of the dielectric coefficient of pending thing is more than or equal to first rate threshold value, penetrate
The operating power reduction by 35% for the raw module 230 that takes place frequently, meanwhile, in whole defrosting workflow, when module 230 occurs for radio frequency
Load impedance Z2With output impedance Z1Difference be less than the first impedance threshold or during more than the second impedance threshold, load compensation module 260
The impedance magnitude of compensating unit is adjusted by motor, and then adjusts the load impedance Z that module 230 occurs for radio frequency2, make radio frequency
The load impedance Z of module 2302With output impedance Z1Difference be more than or equal to the first impedance threshold and default less than or equal to second always
Threshold value.When rate of change Δ ε/Δ t of the dielectric coefficient of pending thing is less than or equal to the second rate-valve value, power supply module 142
Stop power supply, run the original refrigerant sequence of refrigerator 10, module 230, detection module 250, load compensation module 260 occur for radio frequency
It is stopped, buzzer is started working.When user takes out pending thing out of defrosting chamber 214, buzzer is stopped.
So far, although those skilled in the art will appreciate that herein it is detailed have shown and described it is of the present utility model more
Individual exemplary embodiment, still, still can be public according to the utility model in the case where not departing from the spirit and scope of the utility model
The content opened directly determines or derived many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new
The scope of type is understood that and regarded as to cover other all these variations or modifications.
Claims (10)
1. a kind of refrigerator, including define the casing of compressor room and at least one receiving space and be arranged at a receiving
The thawing apparatus in space, the thawing apparatus include：
Cylinder, defined in it and be used to place pending thing with the preceding defrosting chamber to opening, the defrosting chamber；
Device door body, the forward direction opening of the defrosting chamber is arranged at, for being opened and closed the defrosting chamber；
Module occurs for radio frequency, is configured to produce radiofrequency signal；With
Electric pole plate and bottom electrode plate, horizontally be arranged at respectively at the roof and bottom wall of the defrosting chamber, and respectively with institute
State radio frequency and module electrical connection occurs, so that the rf wave of corresponding frequencies is produced in the defrosting chamber according to the radiofrequency signal,
And the pending thing to thaw in the defrosting chamber；And the refrigerator also includes：
Power supply module, it is arranged in the compressor room, thinks that module for power supply occurs for the radio frequency.
2. refrigerator according to claim 1, wherein
The power supply module is fixed on the upper wall of the compressor room, in order to which module and the power supply module occur for the radio frequency
Electrical connection.
3. refrigerator according to claim 1, wherein
The power supply module is DC-DC converter；And the DC-DC converter is arranged to and the master for controlling the refrigerator operation
Plate electrical connection is controlled, thinks that module for power supply occurs for the radio frequency.
4. refrigerator according to claim 3, the master control borad that the compressor room includes setting gradually, compressor and cold
Condensed water collection structure；Wherein
The DC-DC converter is arranged between the master control borad and the compressor, in order to the DC-DC converter with it is described
The electrical connection of master control borad.
5. refrigerator according to claim 1, wherein
The back plate of the cylinder offers first and crosses line mouth, so that the electrical wiring that module occurs for the radio frequency crosses line from described first
Mouth is drawn, and is connected with the power supply module.
6. refrigerator according to claim 1, the refrigerator also includes being used to be opened and closed at least one receiving space respectively
Compartment door body, wherein
The compartment door body is provided with the defrosting switch for controlling thaw routine to start or stop；And module occurs for the radio frequency
It is configured to：
When the switch that thaws is opened, start working；
When the switch that thaws is closed, it is stopped.
7. refrigerator according to claim 1, wherein the thawing apparatus also includes：
Detection module, it is configured to detection and connects the incidence wave signal that module and the electrical wiring of the electric pole plate occur 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,
Calculate the load impedance that module occurs for the radio frequency.
8. refrigerator according to claim 7, wherein the thawing apparatus also includes：
Load compensation unit, the radio frequency can controllably be increased or reduce by, which being configured to, occurs the load impedance of module, and makes described
The load impedance of module occurs for radio frequency and the difference of output impedance is in a preset range, to improve the defrosting of the pending thing
Efficiency.
9. refrigerator according to claim 8, wherein
The preset range is arranged to the output impedance of module occurs for the radio frequency -5%~5%.
10. refrigerator according to claim 7, wherein
The load impedance that the detection module is configured to further according to the radio frequency occur module calculates the pending thing
The rate of change of dielectric coefficient；And
The radio frequency occurs module and is configured to：
When the rate of change of the dielectric coefficient of the pending thing is more than or equal to first rate threshold value, its operating power reduces
30%~40%, to prevent that the pending thing from excessively being thawed；And/or
When the rate of change of the dielectric coefficient of the pending thing is deteriorated to less than equal to the second rate-valve value, it is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720649536.5U CN207081264U (en) | 2017-06-06 | 2017-06-06 | Refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720649536.5U CN207081264U (en) | 2017-06-06 | 2017-06-06 | Refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN207081264U true CN207081264U (en) | 2018-03-09 |
Family
ID=61436860
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720649536.5U Active CN207081264U (en) | 2017-06-06 | 2017-06-06 | Refrigerator |
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| CN (1) | CN207081264U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018223949A1 (en) * | 2017-06-06 | 2018-12-13 | 青岛海尔股份有限公司 | Refrigerator |
| CN109000411A (en) * | 2017-06-06 | 2018-12-14 | 青岛海尔股份有限公司 | Refrigerator |
| CN109357462A (en) * | 2018-10-18 | 2019-02-19 | 宁夏金博乐食品科技有限公司 | A kind of food storage device |
| CN110553462A (en) * | 2018-06-01 | 2019-12-10 | 博西华电器（江苏）有限公司 | Heating device and household appliance |
| CN110553451A (en) * | 2018-06-01 | 2019-12-10 | 博西华电器（江苏）有限公司 | Refrigerator with a door |
| CN111141102A (en) * | 2020-01-08 | 2020-05-12 | 珠海格力电器股份有限公司 | Thawing device, thawing control method and refrigerator |
| WO2020140722A1 (en) * | 2019-01-04 | 2020-07-09 | 海尔智家股份有限公司 | Refrigeration and freezing apparatus |
| CN112912677A (en) * | 2018-10-23 | 2021-06-04 | 松下知识产权经营株式会社 | Heating device and refrigerator with same |
| RU2778309C1 (en) * | 2019-01-04 | 2022-08-17 | Хайер Смарт Хоум Ко., Лтд. | Refrigerating and freezing device |
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2017
- 2017-06-06 CN CN201720649536.5U patent/CN207081264U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018223949A1 (en) * | 2017-06-06 | 2018-12-13 | 青岛海尔股份有限公司 | Refrigerator |
| CN109000411A (en) * | 2017-06-06 | 2018-12-14 | 青岛海尔股份有限公司 | Refrigerator |
| CN109000411B (en) * | 2017-06-06 | 2020-06-23 | 青岛海尔股份有限公司 | Refrigerator with a door |
| US11262121B2 (en) | 2017-06-06 | 2022-03-01 | Haier Smart Home Co., Ltd. | Refrigerator |
| CN110553462A (en) * | 2018-06-01 | 2019-12-10 | 博西华电器（江苏）有限公司 | Heating device and household appliance |
| CN110553451A (en) * | 2018-06-01 | 2019-12-10 | 博西华电器（江苏）有限公司 | Refrigerator with a door |
| CN109357462A (en) * | 2018-10-18 | 2019-02-19 | 宁夏金博乐食品科技有限公司 | A kind of food storage device |
| CN112912677A (en) * | 2018-10-23 | 2021-06-04 | 松下知识产权经营株式会社 | Heating device and refrigerator with same |
| CN112912677B (en) * | 2018-10-23 | 2023-02-03 | 松下知识产权经营株式会社 | Heating device and refrigerator with same |
| WO2020140722A1 (en) * | 2019-01-04 | 2020-07-09 | 海尔智家股份有限公司 | Refrigeration and freezing apparatus |
| RU2778309C1 (en) * | 2019-01-04 | 2022-08-17 | Хайер Смарт Хоум Ко., Лтд. | Refrigerating and freezing device |
| CN111141102A (en) * | 2020-01-08 | 2020-05-12 | 珠海格力电器股份有限公司 | Thawing device, thawing control method and refrigerator |
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