CN106500582A - A kind of solidifying frost detection means of refrigerator condenser type and detection method - Google Patents
A kind of solidifying frost detection means of refrigerator condenser type and detection method Download PDFInfo
- Publication number
- CN106500582A CN106500582A CN201611046700.XA CN201611046700A CN106500582A CN 106500582 A CN106500582 A CN 106500582A CN 201611046700 A CN201611046700 A CN 201611046700A CN 106500582 A CN106500582 A CN 106500582A
- Authority
- CN
- China
- Prior art keywords
- plate
- detection
- condenser
- refrigerator
- num
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 92
- 239000003990 capacitor Substances 0.000 claims abstract description 52
- 230000008020 evaporation Effects 0.000 claims abstract description 17
- 238000001704 evaporation Methods 0.000 claims abstract description 17
- 239000006200 vaporizer Substances 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000010257 thawing Methods 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000005357 flat glass Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000002407 reforming Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 2
- 235000008434 ginseng Nutrition 0.000 claims 2
- 230000001112 coagulating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000008014 freezing Effects 0.000 description 8
- 238000007710 freezing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000013307 optical fiber Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 101000806846 Homo sapiens DNA-(apurinic or apyrimidinic site) endonuclease Proteins 0.000 description 1
- 101000835083 Homo sapiens Tissue factor pathway inhibitor 2 Proteins 0.000 description 1
- 102100026134 Tissue factor pathway inhibitor 2 Human genes 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000010356 wave oscillation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a kind of refrigerator condenser type coagulates frost detection means and detection method, the device is included：Vaporizer, detection plate condenser, reference plate capacitor and chromacoder, detection plate condenser, reference plate capacitor at least have the conductive plate of two opposing parallel placements, and physical contact evaporation tube, chromacoder, detection plate condenser and reference plate capacitor is electrically connected to, the capacitance of detection plate condenser and reference plate capacitor is converted into digital signal.The present invention takes full advantage of the original structure of evaporator of refrigerator, can effectively reduce the complexity and volume, reduces cost of solidifying frost detection structure, improve accuracy in detection, so as to improve defroster effect, improve refrigerating efficiency, save electric energy.
Description
Technical field
The invention belongs to refrigerator technical field, the frost detection means and detection method of more particularly to a kind of electric refrigerator.
Background technology
In the application of electric refrigerator, for carrying out the vaporizer of refrigeration heat exchange, surface temperature is subzero；When in air
When there is steam, it is easy to form solidifying frost attachment on an evaporator.After frosting on vaporizer, refrigerating efficiency can be had a strong impact on,
Refrigeration for refrigerator effect is caused to be deteriorated, while power consumption increases.
In existing technology, electric refrigerator is to carry out heating defrosting by heater timing to vaporizer, and this significantly increases
The power consumption of electric refrigerator, and effect on driving birds is not good are added；For example may when needing to defrost, intervalometer and not actuated heater defrosting；And
Start heating when need not defrost on the contrary, cause the waste of electric energy.
In order to save electric energy, defrosting effect is improved, it is necessary to solidifying frost is being detected, Cai be implicitly present in solidifying frost
Start heater to be defrosted.
Traditional icing detection means include optical profile type the method such as electricity formula and mechanical type.A kind of typical optical profile type
Freezing sensor is fibre-optical freezing sensor, is the optical fiber with two concentric structures, and central circular is launching fiber, Ke Yifa
Go out infrared light；Peripheral annular is reception optical fiber, can receive and detect scattering and the infrared light for reflecting.Fibre-optical probe end
Face is a flat glass, and when not freezing on glass, the whole transparent glass end faces of infrared light of launching fiber transmitting enter empty
Gas, reception optical fiber do not receive any infrared light；When having icing on glass end face, part infrared light that launching fiber sends by
In being scattered and reflected and received by reception optical fiber by ice sheet.The power of the infrared light received by detection reception optical fiber, is reached
The purpose that detection freezes；But the complex structure, is not easy to install, and high cost.
Mechanical type freezing sensor is frozen according to the detection of the mechanical property of ice.A kind of icing than more typical mechanical type passes
Sensor is the flat diaphragm type freezing sensor based on piezoelectric effect.Cleaning Principle is：When having icing on flat film, freeze and increase flat film
Rigidity, increase the resonant frequency of flat film.Flat film is driven to vibrate in its resonant frequency by the piezoelectric effect of piezoelectric ceramics,
By its resonant frequency of the inverse piezoelectric effect real-time monitoring of piezoelectric ceramics.The method major defect is that piezoelectric device control is multiple
Miscellaneous, high cost, and structural strength (flat film) cannot be guaranteed.
A kind of typical electricity formula freezing sensor is condenser type freezing sensor.Condenser type freezing sensor based on ice,
The difference of dielectric constant of air is ice or air come the medium judged between electrode.Such as patent application
By multi-group electrode to equidistant arrangement in CN200810055051.9, each electrode pair is that an icing detects scale, total icing
Thickness be equal to the distance of adjacent electrode pair and medium be ice electrode pair number product.Wherein benchmark plane-parallel capacitor
It is air between electrode.Medium between the electrode pad of detection plane-parallel capacitor is probably ice, it may be possible to air.Work as detection
When being air between capacitor plate, detect that the ratio of the capacitance of electric capacity and reference capacitance is 1；When between detection capacitor plate, medium is ice
When, detect that the ratio of the capacitance of electric capacity and reference capacitance is more than or equal to 2.So it may determine that any one detection capacitor plate
Between medium be ice or air.But which is the disadvantage is that, require that the medium of reference capacitance pole plate is air, therefore increase finishes
Structure complexity, is not suitable for refrigerator environment use, and in addition the space of the needs of detection plate condenser is too many, is unfavorable for saving sky
Between.
Content of the invention
This is based on, a kind of solidifying frost detection means of refrigerator condenser type and detection side is therefore to provide primary mesh of the invention
Method, the detection means and detection method take full advantage of the original structure of evaporator of refrigerator, can effectively reduce solidifying frost detection knot
The complexity and volume of structure, reduces cost improve accuracy in detection.
Another mesh ground of the present invention is to provide a kind of solidifying frost detection means of refrigerator condenser type and detection method, the detection
Device and detection method can improve defroster effect, improve refrigerating efficiency, save electric energy.
For achieving the above object, the technical scheme is that：
A kind of solidifying frost detection means of refrigerator condenser type, which includes：
Vaporizer, further includes the fin of bracing frame, evaporation tube and string on evaporation tube；
Detection plate condenser, at least has the conductive plate of two opposing parallel placements, and physical contact evaporation tube；
Reference plate capacitor, the conductive plate at least with two opposing parallel placements, and physical contact evaporation tube, and
There is between conductive plate solid dielectric or surrounding to seal；
Chromacoder, is electrically connected to detection plate condenser and reference plate capacitor, will detect plate condenser
Digital signal is converted into the capacitance of reference plate capacitor.
Described detection plate condenser and/or reference plate capacitor conductive plate using and fin identical material and
Size makes；With with good Detection results.
The reference plate capacitor adopts medium for acrylic sheet glass, the acrylic sheet glass and two conductive plates
It is brought into close contact.
Further, the detection plate condenser is composed in parallel by many height detection plate condenser, and per height, detection is flat
Plate capacitor is by the opposing parallel placement of two panels and the conductive plate on evaporation tube of going here and there is constituted.
Further, mutually shared pole plate between the adjacent sub- detection flat electric appliance.
Further, the reference plate capacitor is composed in parallel by many sub- reference plate capacitors, per height with reference to flat
Plate capacitor is by the opposing parallel placement of two panels and the conductive plate on evaporation tube of going here and there is constituted.
Further, mutually shared pole plate between the adjacent sub- reference plate electrical equipment.
Further, described signal reforming unit is RC agitators, includes two RC agitators, and wherein, each RC shakes
Device is swung, is constituted including a comparator, four resistance R1-R4 and at least one electric capacity；Comparator includes positive and negative input,
And an outfan；Resistance R1 and R2 be connected on power vd D and ground GND between, resistance R3 be connected on comparator positive input terminal and
Between outfan；Resistance R4 and detection plate condenser are connected in series, and resistance R4 mono- terminates comparator positive input terminal, another termination
Electric capacity anode and access the negative input end of comparator；Electric capacity negativing ending grounding.The frequency of output square wave is determined by resistance R and electric capacity C
Fixed；Wherein resistance R is determined by chromacoder itself, electric capacity C portion or all by detection plate condenser or reference plate
Capacitor determines.
The electric capacity can be with other fixed capacities in parallel to ground, so as to adjust Tt cycle of oscillation.
The present invention also provides a kind of detection method of the solidifying frost detection means of refrigerator, and which includes that step is as follows：
101st, after detecting that plate condenser and reference plate capacitor access RC agitators, shake in predetermined time T0
Swing device output square wave to be counted；When wherein accessing detection plate condenser, count value is NUM_TST, accesses reference plate electric capacity
During device, count value is NUM_REF；
102nd, NUM_TST and/or NUM_REF is coagulated white or icing thickness as between detection plate condenser pole plate
Foundation；When NUM_TST and/or NUM_REF reaches predetermined threshold values, then it is assumed that reached solidifying frost point, refrigerator needs to be defrosted
Process.
Further, the output square wave of the RC agitators that scheduled time T0 is accessed equal to detection plate condenser is counted as NUM_
The time of TST, and using NUM_REF results as detection plate condenser pole plate between coagulate frost or icing thickness judgement according to
According to.
The solidifying frost detection means of condenser type of the present invention and detection method, take full advantage of original knot of evaporator of refrigerator
Structure, can effectively reduce the complexity and volume, reduces cost of solidifying frost detection structure, improve accuracy in detection, so as to improve ice
Case defrosting effect, improves refrigerating efficiency, saves electric energy.
Description of the drawings
Fig. 1 is the structural representation implemented by the present invention.
Fig. 2 is the structural representation of the implemented capacitance detecting device of the present invention.
Fig. 3 is the circuit diagram of institute's enforcement signal adapter of the present invention.
Fig. 4 is that solidifying frost/freeze front RC oscillating output waveform figures.
Fig. 5 is RC oscillating output waveform figures after solidifying frost/icing.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, the embodiment of the solidifying frost detection means of the implemented refrigerator condenser type of the present invention is shown, the device is included
Vaporizer 100, and the detection plate condenser 104 and reference plate capacitor 105 on vaporizer 100；Wherein
Vaporizer 100 includes support 102 again, for fixing whole vaporizer；Evaporation tube 101 is used for condensing for transmitting coolant；
Fin 103, for increasing heat radiation area, strengthens heat exchange effect；In addition, also including signal adapter 300, inspection is electrically connected to
The top crown N_CTP and bottom crown N_CTN of master plate capacitor 104, and the top crown N_CFP of reference plate capacitor 105
With bottom crown N_CFN, as shown in Figure 2.The upper bottom crown of detection plate condenser 104 and reference plate capacitor 105 is all such as
As fin 103, it is through on evaporation tube 101, and adopts and the making of 103 identical material of fin, such as aluminium flake；Size is also and fin
103 is suitable.Therefore, it is mounted with that capacitance detecting device includes detecting plate condenser 104 and reference plate capacitor
105 vaporizer 100, its structure keeps and common vaporizer is basically identical, and the relatively easy reliability of structure is manufactured into
This is low.
Referring to Fig. 2, capacitance detecting device includes detection plate condenser 104, reference plate capacitor 105 and signal
Transducer 300.Wherein detection plate condenser 104 is by three positive plates 1041 and two panels negative plate 1042 successively alternating parallel phase
Constitute to being through on evaporation tube 101；Wherein a piece of positive plate and a piece of negative plate can consider one son detection flat board electricity of composition
Container, such as 1043.It is idle between the positive/negative plate of detection plate condenser 104, when on vaporizer in refrigerator, generation is solidifying
When white, then the solidifying frost on positive/negative plate will fill the free space gradually, so as to change the capacitance of capacitor 104.Corresponding
, reference plate capacitor 105 also has and detects the similar structure of plate condenser 104, mainly by three positive plates 1051
Be through evaporation tube 101 on relative with two panels negative plate 1052 successively alternating parallel is constituted；Wherein a piece of positive plate and a piece of negative pole
Plate can consider that one son of composition detects plate condenser, such as 1053.Except that, need between the positive/negative plate of capacitor 105
Filler is wanted, the material is preferably stable in properties, with low cost and be easily installed, the such as material such as glass/acrylic, embodiment
Using acrylic glass material 1054；The purpose of do so is in the solidifying frost of vaporizer, between 105 positive/negative plate of reference capacitor
Do not have frost or ice is entered, holding capacitor value is relatively stable.Or the surrounding of reference plate electric capacity is sealed, it is also possible to play
The effect for preventing frost from entering.The dielectric constant of the capacitance C=ε * S/D of plate condenser, wherein ε for material, S are flat board electricity
The overlapping area of two pole plates of container, D are the distance between two pole plates.In this example, S=30mm*30mm=900mm^2；D=
4mm, in atmosphere, equivalent capacity is about 2pF；When filling acrylic glass between pole plate, equivalent capacity is about 6～7pF.Arrange
The purpose of reference capacitor 105 be solidifying frost freezes caused by sensing capacitor electric capacity change transitions be sensing capacitor and
The change of reference capacitor relative capacity ratio, such that it is able to eliminate absolute capacitance caused by temperature, structure and parasitic parameter
The drift and change of value, improves the signal to noise ratio and precision of detection.
The positive/negative plate of two capacitors of detection plate condenser 104 is electrically connected to signal adapter 300, so as to reality
The detection of existing capacitance, is exactly the detection of electric capacity relative ratio.Signal adapter 300 by the way of RC agitators come
Detection capacitance ratio, simple and reliable for structure.The cycle of the waveform of RC agitators output and the product of resistance R and electric capacity C
The proportional relations of RC, T=K*R*C, K are a predetermined coefficient.The capacitance of above-mentioned capacitor is added in C, then can be real
Existing condenser capacitance value and the proportionate relationship in waveform cycle；And then can by comparing the cycle of the capacitor for accessing different
To obtain condenser capacitance ratio relation.
Referring to Fig. 3, signal adapter 300 includes two RC agitators 330 and 340.Each RC agitator, compares including one
Constitute compared with device, four resistance and at least one electric capacity；By taking RC agitators 330 as an example, comparator 301 includes positive and negative input,
And an outfan；Resistance R1 and R2 are connected between power vd D and ground GND, and junction point accesses the positive input of comparator 301
End, used as the reference voltage of comparator；Resistance R3 is connected between comparator positive input terminal and outfan；Resistance R4 and detection flat board
Capacitor 104 is connected in series, and wherein R4 mono- terminates comparator positive input terminal, 104 one end of another termination capacitor (anode) and connects
Enter the negative input end of comparator 301；104 one end of electric capacity (negative terminal) is grounded.During work, 301 outfan of comparator exports square wave, because
Be grounded when this equivalent resistance R3, R4 connect one end of the output of comparator 301, when and connect power supply, and general R1=R2=R3.When than
When being output as high level VDD compared with device 301,301 positive input terminal voltage of equivalent comparator is 2*VDD/3, and electric capacity 104 carried out by R4
Charge；When comparator 301 is output as low level GND, then 301 positive input terminal voltage of equivalent comparator be 1*VDD/3, electric capacity
104 are discharged by R4；Therefore, the square wave oscillation cycle of the output of whole comparator 301 is Tt=R4*C104*LN2；Count
Device TIMER0302 to export square wave count, count value be NUM_TSTx (x=1,2 ..., n).Electric capacity 104 can also be simultaneously
Join other fixed capacities to ground, so as to adjust Tt cycle of oscillation.
It is completely consistent with 330 that RC vibrates its 340 structure, and therefore cycle of oscillation is Tr=R8*C105*LN2, enumerator
TIMER1304 record square wave number be NUM_REFx (x=1,2 ..., n).Obtain the ratio of electric capacity for convenience, arrange one
Square wave number NUM_SET, and be compared by digital comparator Dig_Compare350 and NUM_TSTx, work as NUM_TSTx=
During NUM_SET, output signal allows TIMER1304 to stop counting, and the count value of TIMER1 now is exactly to have reacted capacitor 104
Numerical value with 105 ratio of capacitor：
NUM_REFx*R8*C105*LN2=NUM_TSTx*R4*C104*LN2
General setting R4=2*R8, so as to obtain from above formula：
NUM_REFx=NUM_SET*C104/C105
=＞ NUM_REFx/NUM_SET=C104/C105.
Referring to Fig. 4, in the square-wave waveform of solidifying 300 output of frost icing front signal transducer, wherein square wave 201 is RC agitators
340 outputs refer to square wave, and the cycle is Tr0, and it is NUM_REF0=9 to count number in the given time；Square wave 202 is RC agitators
330 outputs refer to square wave, and the cycle is Tt0, and it is NUM_TST0=NUM_SET=6 to count number in the given time.Above-mentioned predetermined
Time is NUM_TST0*Tt0.
Referring to Fig. 5, the square-wave waveform of the output of signal adapter 300 after solidifying frost freezes, wherein square wave 203 is RC agitators
340 outputs refer to square wave, and the cycle is Tr1, and it is NUM_REF0=12 to count number in the given time；Square wave 204 is RC vibrations
The output of device 330 refers to square wave, and the cycle is Tt1, and it is NUM_TST1=NUM_SET=6 to count number in the given time.Above-mentioned pre-
Fix time as NUM_TST1*Tt1.As reference capacitor 105 is hardly by solidifying frost icing effect, therefore Tr1 ≈ Tr0.
NUM_REFx/NUM_SET can be set>When=11/6, it is believed that reached the threshold value that solidifying frost judges, therefore worked as NUM_
During REF1/NUM_SET=12/6, the solidifying frost detection means of refrigerator thinks to have reached solidifying frost point, and refrigerator needs to carry out defrosting process.
In a word, the present invention takes full advantage of the original structure of evaporator of refrigerator, can effectively reduce solidifying frost detection structure
Complexity and volume, reduces cost improve accuracy in detection, so as to improve defroster effect, improve refrigerating efficiency, save electricity
Energy.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of refrigerator condenser type coagulates frost detection means, it is characterised in that the device is included：
Vaporizer, further includes the fin of bracing frame, evaporation tube and string on evaporation tube；
Detection plate condenser, at least has the conductive plate of two opposing parallel placements, and physical contact evaporation tube；
Reference plate capacitor, the conductive plate at least with two opposing parallel placements, and physical contact evaporation tube, and conductive
There is between pole plate solid dielectric or surrounding to seal；
Chromacoder, is electrically connected to detection plate condenser and reference plate capacitor, will detection plate condenser and ginseng
The capacitance for examining plate condenser is converted into digital signal.
2. refrigerator condenser type as claimed in claim 1 coagulates frost detection means, it is characterised in that the reference plate capacitor is adopted
It is acrylic sheet glass with medium, the acrylic sheet glass and two conductive plates are brought into close contact.
3. the solidifying frost detection means of refrigerator condenser type as claimed in claim 1, it is characterised in that the detection plate condenser by
Many height detection plate condensers are composed in parallel, and per height, detection plate condenser by the opposing parallel placement of two panels and is gone here and there in evaporation
Conductive plate composition on pipe.
4. refrigerator condenser type as claimed in claim 3 coagulates frost detection means, it is characterised in that the adjacent sub- detection flat board electricity
Mutually shared pole plate between device.
5. the solidifying frost detection means of refrigerator condenser type as claimed in claim 2, it is characterised in that the reference plate capacitor by
Many sub- reference plate capacitors are composed in parallel, and are placed and gone here and there in evaporation by two panels is opposing parallel per individual sub- reference plate capacitor
Conductive plate composition on pipe.
6. refrigerator condenser type as claimed in claim 5 coagulates frost detection means, it is characterised in that further, the adjacent sub- ginseng
Examine mutually shared pole plate between flat electric appliance.
7. the solidifying frost detection means of refrigerator condenser type as claimed in claim 1, it is characterised in that described signal reforming unit is
RC agitators, include two RC agitators, wherein, each RC agitator, including a comparator, four resistance R1-R4 with
And at least one electric capacity composition；Comparator includes positive and negative input, and an outfan；Resistance R1 and R2 are connected on power supply
Between VDD and ground GND, resistance R3 is connected between comparator positive input terminal and outfan；Resistance R4 and detection plate condenser string
Connection connection, resistance R4 mono- terminate comparator positive input terminal, another termination capacitor anode and access the negative input end of comparator；Electricity
Hold negativing ending grounding.
8. the solidifying frost detection means of refrigerator condenser type as claimed in claim 1, it is characterised in that the electric capacity can with parallel its
His fixed capacity to ground, so as to adjust Tt cycle of oscillation.
9. a kind of refrigerator condenser type coagulates frost detection method, it is characterised in that it is as follows that the method comprising the steps of：
101st, after detecting that plate condenser and reference plate capacitor access RC agitators, in predetermined time T0 internal oscillator
Output square wave is counted；When wherein accessing detection plate condenser, count value is NUM_TST, when accessing reference plate capacitor
Count value is NUM_REF；
102nd, using NUM_TST and/or NUM_REF as detection plate condenser pole plate between coagulate frost or icing thickness according to
According to；When NUM_TST and/or NUM_REF reaches predetermined threshold values, then it is assumed that reached solidifying frost point, refrigerator needs to carry out at defrosting
Reason.
10. refrigerator condenser type as claimed in claim 1 coagulates frost detection method, it is characterised in that in step 102, scheduled time T0
The output square wave for being equal to the RC agitators that detection plate condenser is accessed is counted as time of NUM_TST, and by NUM_REF results
As the basis for estimation for coagulating frost or icing thickness between detection plate condenser pole plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046700.XA CN106500582B (en) | 2016-11-23 | 2016-11-23 | Refrigerator capacitive type frost detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046700.XA CN106500582B (en) | 2016-11-23 | 2016-11-23 | Refrigerator capacitive type frost detection device and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500582A true CN106500582A (en) | 2017-03-15 |
| CN106500582B CN106500582B (en) | 2020-04-07 |
Family
ID=58328122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611046700.XA Active CN106500582B (en) | 2016-11-23 | 2016-11-23 | Refrigerator capacitive type frost detection device and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106500582B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036348A (en) * | 2017-05-17 | 2017-08-11 | 广东美的制冷设备有限公司 | Air conditioner, the defrosting control method of air conditioner and system |
| CN107228620A (en) * | 2017-06-22 | 2017-10-03 | 合肥美菱股份有限公司 | A kind of condenser type frosting thickness detection apparatus and detection method |
| CN107367529A (en) * | 2017-08-15 | 2017-11-21 | 芯海科技（深圳）股份有限公司 | Coagulate white sensor and with the evaporator for coagulating white detection function |
| CN107490607A (en) * | 2017-06-29 | 2017-12-19 | 芯海科技（深圳）股份有限公司 | A kind of solidifying white sensor by the use of evaporation tube as electrode |
| CN107576257A (en) * | 2017-09-06 | 2018-01-12 | 芯海科技（深圳）股份有限公司 | A kind of shielding construction of the solidifying frost detection of electric capacity |
| CN109425372A (en) * | 2017-08-31 | 2019-03-05 | 德州仪器公司 | It is gathered using capacitance sensing frost and ice |
| CN110608569A (en) * | 2019-09-05 | 2019-12-24 | 邹庆丰 | Refrigerator for detecting icing by using capacitive proximity switch |
| CN110793255A (en) * | 2018-08-03 | 2020-02-14 | 博西华电器（江苏）有限公司 | Refrigeration appliance and control method thereof |
| CN110793257A (en) * | 2018-08-03 | 2020-02-14 | 博西华电器（江苏）有限公司 | Refrigeration device |
| CN111928768A (en) * | 2020-07-31 | 2020-11-13 | 中国第一汽车股份有限公司 | Device and method for detecting icing of crankcase ventilation pipeline |
| CN113701438A (en) * | 2021-08-04 | 2021-11-26 | Tcl家用电器（合肥）有限公司 | Refrigerator defrosting method and device, control equipment, refrigerator and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207535U (en) * | 1987-04-29 | 1987-12-31 | 王紫来 | Frost thickness capacitance sensor used in a refrigerating system |
| CN2706770Y (en) * | 2004-01-19 | 2005-06-29 | 威宇科技测试封装有限公司 | Tester for surface sticking capacitor |
| CN101201344A (en) * | 2007-12-06 | 2008-06-18 | 付强 | Method and sensor for detecting randomly performance of engine lubricating oil |
| CN101285673A (en) * | 2008-06-06 | 2008-10-15 | 太原理工大学 | Capacitance ratio type ice-covering thickness sensor and its detection method |
| CN201514223U (en) * | 2009-09-23 | 2010-06-23 | 珠海格力电器股份有限公司 | Frost detector and heat pump-type air conditioner |
| CN202938793U (en) * | 2012-11-26 | 2013-05-15 | 吴法理 | Shield type photoelectric sensor for frost ice on condenser pipe of refrigerator |
| CN104567207A (en) * | 2014-12-31 | 2015-04-29 | 海信容声(广东)冰箱有限公司 | Defrosting sensor, refrigerator and defrosting method |
| CN105548285A (en) * | 2015-12-28 | 2016-05-04 | 中国电子科技集团公司第四十九研究所 | Method for measuring thin ice by adopting finger-inserting micro-structural capacitive thin ice sensor |
| CN206399362U (en) * | 2016-11-23 | 2017-08-11 | 合肥市芯海电子科技有限公司 | A kind of solidifying white detection means of refrigerator condenser type |
-
2016
- 2016-11-23 CN CN201611046700.XA patent/CN106500582B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207535U (en) * | 1987-04-29 | 1987-12-31 | 王紫来 | Frost thickness capacitance sensor used in a refrigerating system |
| CN2706770Y (en) * | 2004-01-19 | 2005-06-29 | 威宇科技测试封装有限公司 | Tester for surface sticking capacitor |
| CN101201344A (en) * | 2007-12-06 | 2008-06-18 | 付强 | Method and sensor for detecting randomly performance of engine lubricating oil |
| CN101285673A (en) * | 2008-06-06 | 2008-10-15 | 太原理工大学 | Capacitance ratio type ice-covering thickness sensor and its detection method |
| CN201514223U (en) * | 2009-09-23 | 2010-06-23 | 珠海格力电器股份有限公司 | Frost detector and heat pump-type air conditioner |
| CN202938793U (en) * | 2012-11-26 | 2013-05-15 | 吴法理 | Shield type photoelectric sensor for frost ice on condenser pipe of refrigerator |
| CN104567207A (en) * | 2014-12-31 | 2015-04-29 | 海信容声(广东)冰箱有限公司 | Defrosting sensor, refrigerator and defrosting method |
| CN105548285A (en) * | 2015-12-28 | 2016-05-04 | 中国电子科技集团公司第四十九研究所 | Method for measuring thin ice by adopting finger-inserting micro-structural capacitive thin ice sensor |
| CN206399362U (en) * | 2016-11-23 | 2017-08-11 | 合肥市芯海电子科技有限公司 | A kind of solidifying white detection means of refrigerator condenser type |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036348A (en) * | 2017-05-17 | 2017-08-11 | 广东美的制冷设备有限公司 | Air conditioner, the defrosting control method of air conditioner and system |
| CN107228620A (en) * | 2017-06-22 | 2017-10-03 | 合肥美菱股份有限公司 | A kind of condenser type frosting thickness detection apparatus and detection method |
| CN107490607A (en) * | 2017-06-29 | 2017-12-19 | 芯海科技（深圳）股份有限公司 | A kind of solidifying white sensor by the use of evaporation tube as electrode |
| CN107367529A (en) * | 2017-08-15 | 2017-11-21 | 芯海科技（深圳）股份有限公司 | Coagulate white sensor and with the evaporator for coagulating white detection function |
| US11371954B2 (en) | 2017-08-31 | 2022-06-28 | Texas Instruments Incorporated | Sensing frost and ice accumulation using capacitance |
| CN109425372A (en) * | 2017-08-31 | 2019-03-05 | 德州仪器公司 | It is gathered using capacitance sensing frost and ice |
| CN107576257A (en) * | 2017-09-06 | 2018-01-12 | 芯海科技（深圳）股份有限公司 | A kind of shielding construction of the solidifying frost detection of electric capacity |
| CN110793255A (en) * | 2018-08-03 | 2020-02-14 | 博西华电器（江苏）有限公司 | Refrigeration appliance and control method thereof |
| CN110793257A (en) * | 2018-08-03 | 2020-02-14 | 博西华电器（江苏）有限公司 | Refrigeration device |
| CN110608569A (en) * | 2019-09-05 | 2019-12-24 | 邹庆丰 | Refrigerator for detecting icing by using capacitive proximity switch |
| CN111928768B (en) * | 2020-07-31 | 2022-04-12 | 中国第一汽车股份有限公司 | Device and method for detecting icing of crankcase ventilation pipeline |
| CN111928768A (en) * | 2020-07-31 | 2020-11-13 | 中国第一汽车股份有限公司 | Device and method for detecting icing of crankcase ventilation pipeline |
| CN113701438A (en) * | 2021-08-04 | 2021-11-26 | Tcl家用电器（合肥）有限公司 | Refrigerator defrosting method and device, control equipment, refrigerator and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106500582B (en) | 2020-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106500582A (en) | A kind of solidifying frost detection means of refrigerator condenser type and detection method | |
| CN206399362U (en) | A kind of solidifying white detection means of refrigerator condenser type | |
| US9562757B2 (en) | Removal of an accumulated frozen substance from a cooling unit | |
| US7589538B2 (en) | Micropower voltage-independent capacitance measuring method and circuit | |
| CN104154987B (en) | A kind of vibrating string type sensor plate reading | |
| CN104776682B (en) | Refrigerator body posterior medial accumulated ice detection warning system | |
| CN108507507A (en) | A kind of method that echo type ultrasound surveys ice thickness device and its surveys ice thickness | |
| CN203732175U (en) | Ultrasonic temperature measurer | |
| CN110094921A (en) | A kind of intelligent refrigerator | |
| CN112649623B (en) | Environment-adaptive ultrasonic wind measuring system | |
| CN115371769B (en) | External intelligent ultrasonic liquid level switch and alarm method thereof | |
| CN103520803A (en) | Device and method for detecting liquid level of infusion drip chamber | |
| CN109716074A (en) | Ultrasonic flowmeter and the method measured using partial discharge | |
| CN102620883A (en) | Vacuum degree on-line detection device and vacuum degree on-line detection method of vacuum thermal insulation board | |
| CN104501885A (en) | Jet principle-based high-precision low-power consumption natural gas flow measuring method and device | |
| CN107367529A (en) | Coagulate white sensor and with the evaporator for coagulating white detection function | |
| CN206095360U (en) | Liquid level's device among measurement liquid nitrogen container | |
| CN208307559U (en) | A kind of liquid level detection device and liquid storage equipment | |
| CN103376162A (en) | Automatic temperature compensation method and apparatus thereof | |
| CN106596644B (en) | Measuring method and device for non-invasively measuring soil moisture | |
| CN204346496U (en) | A kind of wireless wind speed wind-warm syndrome rheumatism self-recording device | |
| CN102890160A (en) | Detecting method and detecting device of wind measuring equipment | |
| CN115015294A (en) | Microwave sensor and icing and frosting detection equipment based on microwave sensor | |
| CN211348019U (en) | Automatic jet fuel freezing point tester | |
| CN112080915A (en) | Water storage box water level detection system and method for household appliance and clothes dryer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |