CN107367529A - Coagulate white sensor and with the evaporator for coagulating white detection function - Google Patents
Coagulate white sensor and with the evaporator for coagulating white detection function Download PDFInfo
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- CN107367529A CN107367529A CN201710695576.8A CN201710695576A CN107367529A CN 107367529 A CN107367529 A CN 107367529A CN 201710695576 A CN201710695576 A CN 201710695576A CN 107367529 A CN107367529 A CN 107367529A
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- sensor
- pole piece
- metal pole
- white
- plate condenser
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/02—Detecting the presence of frost or condensate
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Defrosting Systems (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of solidifying white sensor and with the evaporator for coagulating white detection function, the sensor also includes fastening locating part, connecting rod and signal processing apparatus, the evaporator includes evaporation tube, fin and support, in addition to an above-mentioned solidifying white sensor.The solidifying white sensor is buckled on evaporation tube by fastening locating part, and make it that connecting rod is parallel with evaporation tube；Degree in a vertical angle between metal pole piece and evaporation tube, and gap be present；Space between the metal pole piece of the filling member filling benchmark plate condenser, and cover the evaporation tube of relevant position.The present invention takes full advantage of the solidifying white mechanism of the original structure of refrigeration plant evaporator, and sensor and evaporator are organically combined, and reduces cost and improves the integraty of structure, enhances reliability and the sensitivity of sensor.
Description
Technical field
The invention belongs to technical field of refrigeration equipment, more particularly to applied to refrigeration plant solidifying frost detection sensor and
Evaporator.
Background technology
In the application of the refrigeration plants such as refrigerator, for being freezed, the evaporator of heat exchange, surface temperature is zero
Under；When steam in air be present, it is easy to form solidifying frost attachment on an evaporator., can serious shadow after frosting on evaporator
Refrigerating efficiency is rung, causes the refrigerating device refrigeration such as refrigerator effect to be deteriorated, while power consumption increase.
In existing technology, refrigerator is to carry out heating defrosting to evaporator by heater timing, and this significantly increases
Add the power consumption of refrigerator, and it is ineffective；Such as may be when needing defrosting, timer and the defrosting of not actuated heater；And
Heating is started when need not defrost on the contrary, causes the waste of electric energy.
In order to save electric energy, defrosting effect is improved, it is necessary to detected to solidifying frost, just confirm to start when having solidifying white
Heater is defrosted.
Earlier patent application 201611046700.X describes a kind of refrigerator condenser type and coagulates white detection means and detection
Method, the device include：Evaporator, detection plate condenser, reference plate capacitor and chromacoder, detect flat board
Capacitor, reference plate capacitor at least have two relative conductive plates being placed in parallel, and evaporation tube is physically contacted, signal
Conversion equipment, detection plate condenser and reference plate capacitor are electrically connected to, by detection plate condenser and reference plate electricity
The capacitance of container is converted into data signal.The present invention takes full advantage of the original structure of evaporator of refrigerator, can effectively reduce
The complexity and volume of solidifying frost detection structure, reduce cost, improve accuracy in detection, so as to improve defroster effect, improve
Refrigerating efficiency, save electric energy.But in foregoing scheme, the globality for coagulating white sensor is poor, it is necessary to carry out part by screw
Connection, or need to be electrically connected with to realize by wire again so that the parts of sensor are more, and production is complicated, and structure is reliable
Property is low, and reliability is reduced so as to add cost.In addition, solidifying white inefficient, the sensor internal of structure in above-mentioned application
Solidifying frost and refrigeration plant evaporator it is actual solidifying white difference it is larger, cause sensor truly to detect the solidifying white feelings of evaporator
Condition.
The content of the invention
Based on this, therefore the present invention primary mesh be to provide a kind of solidifying white sensor and with coagulate white detection function steaming
Device is sent out, the sensor and evaporator are used for refrigeration plant, it is possible to increase the integraty of structure, the use of wire and screw is avoided,
Cost is reduced, improves reliability, while improves and coagulates white efficiency and then raising detection sensitivity.
It is to provide a kind of solidifying white sensor and with the evaporator for coagulating white detection function another mesh of the present invention, should
Sensor and evaporator take full advantage of the solidifying white mechanism of the original structure of refrigeration plant evaporator by the improvement of structure, entirely
Structure, without screw, structural member and electricity piece multiplexing, is advantageous to the improvement of existing commander equipment without wire.
To achieve the above object, the technical scheme is that：
One kind coagulates white sensor, and the sensor includes detection plate condenser, it is characterised in that the sensor also includes
There are fastening locating part, connecting rod and signal processing apparatus, wherein：
Plate condenser is detected, is made up of at least two metal pole pieces into parallel arrangement；
Fasten locating part：Made by insulating materials, for sensor card to be buckled in into examined object, while play restriction
The position-limiting action of metal pole piece and object under test surface spacing；
Connecting rod, for above-mentioned metal pole piece, fastening locating part to be fixed into an entirety, the connecting rod uses PCB
Make, each metal pole piece is fixed by each through hole with pad, and it is by pad and PCB electric conduction routings that metal pole piece is electrical
It is connected to signal processing circuit；
Signal processing apparatus：Two pole plates including capacitive digital converter, and above-mentioned detection plate condenser electrically connect
Connect, for above-mentioned detection plate condenser capacitance to be converted into data signal；
Preferably, the PCB connecting rods have three, and each metal pole piece is fixed with three PCB connecting rods, so as to shape
Into triangle rock-steady structure.
Preferably, plate condenser in addition on the basis of one, is made up of at least two panels metal pole piece, a filling member；
The filling member, for preventing solidifying frost from entering space in the plate condenser；Capacitive digital converter and said reference flat board electricity
Two pole plates of container are electrically connected with, for said reference plate condenser capacitance to be converted into data signal
Preferably, the fastening locating part causes metal pole piece and examined object surface to leave gap.
Preferably, the fastening locating part and filling member are the same part.
Preferably, the detection plate condenser is composed in parallel by more height detection plate condenser, and per height, detection is flat
Plate capacitor is made up of the relative metal pole piece being placed in parallel of two panels；Preferably, sub- detection flat electric appliance mutually can be with common pole
Piece；
Preferably, the benchmark plate condenser is composed in parallel by the quasi- plate condenser of multiple subbases, and each subbase is accurate flat
Plate capacitor is made up of the relative metal pole piece being placed in parallel of two panels；Preferably, the quasi- flat electric appliance of subbase mutually can be with common pole
Plate；
Preferably, the detection plate condenser and benchmark plate condenser share a capacitance electrode, the capacitance electrode
For reference ground.
Preferably, the metal pole piece surface carries out tin plating processing, is easy to the welding of metal pole piece and PCB pads.
A kind of to have the evaporator for coagulating white detection function, the evaporator includes evaporation tube, fin and support, wherein steaming
Hair pipe is used to transport condensate liquid, and fin string is mainly used in carrying out heat exchange, support mainly plays fixation on evaporation tube；Its
It is characterised by, in addition to an above-mentioned solidifying white sensor.The solidifying white sensor is buckled in evaporation tube by fastening locating part
On, and make it that connecting rod is parallel with evaporation tube；Degree in a vertical angle between metal pole piece and evaporation tube, and gap be present；It is described to fill out
The space filled between the metal pole piece of part filling benchmark plate condenser, and cover the evaporation tube of relevant position.
At work, because temperature is low on evaporation tube, moisture condensation is above, so as to form solidifying frost, wherein solidifying for evaporator
Frost includes coagulating the evaporation pipe surface of white sensor position, the region particularly between the metal pole piece of detection plate condenser
Solidifying frost, the change of the plate condenser capacitance can be caused；And benchmark plate condenser is due to the filling of filling member, relevant position
Evaporation tube be also capped and can not contact steam, therefore benchmark plate condenser is not influenceed by solidifying frost.Pass through signal processing apparatus
The capacitance of above-mentioned detection plate condenser and benchmark plate condenser can be obtained, so as to obtain detect plate condenser capacitance with
Solidifying frost change, and the capacitance of benchmark plate condenser does not change with solidifying frost, can be drawn indirectly by the ratio of two capacitances solidifying
Frost thickness.Due to fastening the presence of locating part, the gap between metal pole piece and evaporation tube so that both are not directly contacted with (two
The air gap or other nonmetallic materials fillers are left among person), heat transfer is bad, therefore the solidifying frost on metal pole piece will
Few compared with evaporation tube, such evaporation tube can preferably keep solidifying white characteristic when its original non-install sensor；Thus, pass
Sensor is able to detect that most real evaporator coagulates white situation.
Solidifying white sensor of the present invention and the evaporator that white sensor is coagulated using this, take full advantage of refrigeration plant
The solidifying white mechanism of the original structure of evaporator, sensor and evaporator are organically combined, make total without wire without
Screw, structural member and electricity piece multiplexing, reduce cost and improve the integraty of structure, enhance sensor reliability and
Sensitivity.
Brief description of the drawings
Fig. 1 is that the present invention implements to coagulate the structural representation of white sensor.
Fig. 2 is that the present invention implements the structural representation that another angle coagulates white sensor.
Fig. 3 is that the present invention implements to coagulate the equivalent electric characteristic figure of white sensor.
Fig. 4 is that the present invention implements the evaporation structure schematic diagram with solidifying frost detection.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Shown in Fig. 1, Fig. 2, for the tomograph of the solidifying white sensor embodiment 100 of the invention realized, wherein Fig. 1 is
The schematic diagram at top visual angle, Fig. 2 is the schematic diagram of bottom views, and shown in figure, metal pole piece 101,102,103 is parallel to each other cloth
Put, by connecting rod 105 106 107 be fixed；Female seat 107 is manufactured by metal, and inside is emptied, for disposing signal transacting
Circuit, while both side surface also serves as metal pole piece use；Fastening locating part 104 is used to whole sensor being fastened on evaporation tube
On 108, while it is also the filling member of plate condenser.Metal pole piece, connecting rod and fastening locating part are centered on female seat, and two
While it is arranged symmetrically.
Coagulate the metal pole piece that two panels is adjacent in white sensor 100 and form plate condenser：Metal pole piece 101 and metal pole piece
103 form detection plate condenser 120, and metal pole piece 102 and metal pole piece 103 form benchmark plate condenser 130；Female seat
107 equally use in electrical characteristic as metal pole piece 103；What the physical connection between each pole piece made by using PCB
Connecting rod 105~107 is completed, and completing electrical characteristic with electric conduction routing simultaneously also by the pad in PCB connecting rods connects, such as
Metal pole piece 101 is completed to be electrically connected by connecting rod 105, is completed especially by pad 1051 and corresponding cabling, and finally
It is connected in the signal processing circuit 200 of the inside of female seat 107 (referring to Fig. 2)；Metal pole piece 102 completes electricity by connecting rod 107
Gas connects, and is completed especially by pad 1071 and corresponding cabling, and be ultimately connected to the signal processing circuit of the inside of female seat 107
In 200.
Metal pole piece 103 is completed to be electrically connected by connecting rod 106, complete especially by pad 1061 and corresponding cabling
Into, and be ultimately connected in the signal processing circuit 200 of the inside of female seat 107.Between the capacitance electrode of benchmark plate condenser 130
Filled by fastening locating part 104, avoid solidifying frost from entering, holding capacitor is stable, therefore is used as benchmark.
Fastening locating part 104 is insulating materials, is typically that the engineering plastics for having certain elasticity make, for example, POM PP materials
Deng can be fastened on by way of buckle on evaporation tube 108.Metal pole piece and evaporation tube are not directly contacted with, but are maintained
Gap, such as 0.5mm, the temperature difference between such metal pole piece and evaporation tube be present, the solidifying white efficiency of metal pole piece itself is low, Bu Huiyin
It is the solidifying frost of metal pole piece so as to stopping the solidifying frost of evaporation tube in detection capacity plate antenna space so that solidifying frost enters detection flat board electricity
Hold interior volume, reach the solidifying frost amount of raising, put forward highly sensitive purpose.Above-mentioned gap is set by fastening locating part 104
's.Above-mentioned metal pole piece and female seat can be manufactured from aluminium, or metal pole piece can also be made by copper sheet.One preferable option
It is that tin plating processing is carried out to metal pole piece, to facilitate the pad with connecting rod to be welded and fixed, and electrical connection.
The equivalent electric characteristic figure of solidifying white sensor 100 is illustrated in figure 3, detects the upper bottom crown of plate condenser 120
It is NETA that respectively metal pole piece 101 and 103, wherein top crown, which correspond to electrical node, and bottom crown corresponds to electrical node is
GND, that is, the ground of circuit；The upper bottom crown of benchmark plate condenser 130 is respectively metal pole piece 102 and metal pole piece 103,
The electrical node of its top crown is NETB, and bottom crown electrical node is GND, while electric capacity space is filled by fastening locating part 104.
For the upper bottom crown of above-mentioned electric capacity 120 and electric capacity 130 by access signal processing circuit 200, publicly, therefore GND is
Only need 3 signal wires.In sensor 100, above-mentioned 3 signal wires are walked by 3 connecting rods 105~107 respectively.Letter
Number process circuit 200 is mainly a CDC circuit, is exactly capacitive digital converter, can be by electric capacity 120 and the electricity of electric capacity 130
Capacitance is converted to data signal, is identified for follow-up processor MCU etc..It is by comparing electric capacity typically for solidifying white judgement
120 and the value of electric capacity 130 judge.Because frost will not be coagulated inside reference capacitance 130, therefore its capacitance is basically unchanged, and
The inside of detection electric capacity 120 can coagulate frost, and medium changes, therefore capacitance changes, therefore can pass through electric capacity 120 and electric capacity
130 ratio in judgement and measure coagulate the state of frost.In the case of no reference capacitance 130, directly pass through the electric capacity of electric capacity 120
Value can also be judged and determined to coagulating white situation.
It is illustrated in figure 4 with the evaporator 300 for coagulating white detection function, by the way that solidifying white sensor 100 is arranged on into evaporation
It can be achieved on the evaporation tube 301 of device 300.Fin 303 on metal pole piece and evaporator 300 on white sensor 100 is coagulated to keep
It is parallel.
In a word, above-mentioned each solidifying white sensor is avoided by the installation of external hanging type is changed greatly to original evaporator, is led to
Cross and combine physical connection and electrical connection so that the integraty of sensor is high, saves the use of screw and wire, reduces
Cost, enhance reliability；A part of the evaporation tube as sensor is make use of again simultaneously, hence in so that the original solidifying frost of evaporator
Characteristic is not changed, and really detects the solidifying frost of evaporator itself.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. one kind coagulates white sensor, the sensor includes detection plate condenser, it is characterised in that the sensor also includes
Locating part, connecting rod and signal processing apparatus are fastened, wherein：
Plate condenser is detected, is made up of at least two metal pole pieces into parallel arrangement；
Fasten locating part：Made by insulating materials, for sensor card to be buckled in into examined object, while play restriction metal
The position-limiting action of pole piece and object under test surface spacing；
Connecting rod, for above-mentioned metal pole piece, fastening locating part to be fixed into an entirety, the connecting rod is made using PCB,
Each metal pole piece is fixed by each through hole with pad, and is electrically connected with metal pole piece by pad and PCB electric conduction routings
To signal processing circuit；
Signal processing apparatus：Two pole plates including capacitive digital converter, and above-mentioned detection plate condenser are electrically connected with, and are used
In above-mentioned detection plate condenser capacitance is converted into data signal.
2. white sensor is coagulated as claimed in claim 1, it is characterised in that the PCB connecting rods have three, each metal pole
Piece is fixed with three PCB connecting rods, so as to form triangle rock-steady structure.
3. white sensor is coagulated as claimed in claim 1, it is characterised in that capacity plate antenna on the basis of the sensor also includes one
Device, the benchmark plate condenser are made up of at least two panels metal pole piece, a filling member；The filling member, for preventing to coagulate
Frost enters space in the plate condenser；Two pole plates of capacitive digital converter and said reference plate condenser electrically connect
Connect, for said reference plate condenser capacitance to be converted into data signal.
4. white sensor is coagulated as claimed in claim 3, it is characterised in that the fastening locating part causes metal pole piece and to be checked
Survey body surface and leave gap.
5. white sensor is coagulated as claimed in claim 4, it is characterised in that the fastening locating part and filling member are the same part.
6. white sensor is coagulated as claimed in claim 1, it is characterised in that the detection plate condenser is detected flat by more height
Plate capacitor is composed in parallel, and per height, detection plate condenser is made up of the relative metal pole piece being placed in parallel of two panels, and son inspection
Master plate electrical equipment can mutually share pole piece.
7. white sensor is coagulated as claimed in claim 5, it is characterised in that the benchmark plate condenser is accurate flat by multiple subbases
Plate capacitor is composed in parallel, and each quasi- plate condenser of subbase is made up of the relative metal pole piece being placed in parallel of two panels, and subbase
Quasi- flat electric appliance can mutually share pole plate.
8. white sensor is coagulated as claimed in claim 7, it is characterised in that the detection plate condenser and benchmark capacity plate antenna
Device shares a capacitance electrode, and the capacitance electrode is reference ground.
9. white sensor is coagulated as claimed in claim 1, it is characterised in that the metal pole piece surface carries out tin plating processing, is easy to
The welding of metal pole piece and PCB pads.
10. a kind of have the evaporator for coagulating white detection function, the evaporator includes evaporation tube, fin and support, wherein steaming
Hair pipe is used to transport condensate liquid, and fin string is mainly used in carrying out heat exchange, support mainly plays fixation on evaporation tube；Its
It is characterised by being provided with the evaporator and coagulates white sensor as claimed in claim 1, the solidifying white sensor passes through fastening
Locating part is buckled on evaporation tube, and make it that connecting rod is parallel with evaporation tube；Degree in a vertical angle between metal pole piece and evaporation tube,
And gap be present；Space between the metal pole piece of the filling member filling benchmark plate condenser, and cover relevant position
Evaporation tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695576.8A CN107367529B (en) | 2017-08-15 | 2017-08-15 | Frost sensor and evaporator with frost detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695576.8A CN107367529B (en) | 2017-08-15 | 2017-08-15 | Frost sensor and evaporator with frost detection function |
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| Publication Number | Publication Date |
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| CN107367529A true CN107367529A (en) | 2017-11-21 |
| CN107367529B CN107367529B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710695576.8A Active CN107367529B (en) | 2017-08-15 | 2017-08-15 | Frost sensor and evaporator with frost detection function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981271A (en) * | 2018-08-27 | 2018-12-11 | 天津商业大学 | A kind of capacitance method intelligent defrosting device and control method |
| CN109059355A (en) * | 2018-07-20 | 2018-12-21 | 广东美的制冷设备有限公司 | Heat exchanger frosting detection device, heat exchanger, air conditioner and its defrosting control method |
| CN110608569A (en) * | 2019-09-05 | 2019-12-24 | 邹庆丰 | Refrigerator for detecting icing by using capacitive proximity switch |
| CN113324467A (en) * | 2021-05-27 | 2021-08-31 | 贵州电网有限责任公司 | Device and method for monitoring equivalent icing thickness of lead based on ice dielectric capacitance effect |
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| CN1208461A (en) * | 1996-02-06 | 1999-02-17 | 石塚电子株式会社 | Frost formation detector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059355A (en) * | 2018-07-20 | 2018-12-21 | 广东美的制冷设备有限公司 | Heat exchanger frosting detection device, heat exchanger, air conditioner and its defrosting control method |
| CN109059355B (en) * | 2018-07-20 | 2021-02-26 | 广东美的制冷设备有限公司 | Heat exchanger frosting detection device, heat exchanger, air conditioner and defrosting control method of air conditioner |
| CN108981271A (en) * | 2018-08-27 | 2018-12-11 | 天津商业大学 | A kind of capacitance method intelligent defrosting device and control method |
| CN108981271B (en) * | 2018-08-27 | 2023-11-03 | 天津商业大学 | Capacitive intelligent defrosting device and control method |
| CN110608569A (en) * | 2019-09-05 | 2019-12-24 | 邹庆丰 | Refrigerator for detecting icing by using capacitive proximity switch |
| CN113324467A (en) * | 2021-05-27 | 2021-08-31 | 贵州电网有限责任公司 | Device and method for monitoring equivalent icing thickness of lead based on ice dielectric capacitance effect |
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| CN107367529B (en) | 2020-11-24 |
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