CN203980775U - A kind of defrosting recoil simulator by frosting THICKNESS CONTROL - Google Patents
A kind of defrosting recoil simulator by frosting THICKNESS CONTROL Download PDFInfo
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- CN203980775U CN203980775U CN201420400976.3U CN201420400976U CN203980775U CN 203980775 U CN203980775 U CN 203980775U CN 201420400976 U CN201420400976 U CN 201420400976U CN 203980775 U CN203980775 U CN 203980775U
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- frosting
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Abstract
By a defrosting recoil simulator for frosting THICKNESS CONTROL, can directly be loaded in air-conditioning, refrigeration and refrigeration system, as the front-end control facilities of defrost controller, it comprises finned tube exchanger, support, flute profile optoelectronic switch and temp probe.By detecting the thickness of finned-tube evaporator temperature and surperficial frosting, the frosting of fin narrow slit groove reaches setting thickness, immediately provide the signal that defrosting starts, temp probe temperature sensor reaches design temperature, immediately provide the signal of the end that defrosts, reach accurately and for the controller of various air-conditionings, refrigeration and refrigeration system, provide in real time the object of defrosting beginning and end signal.
Description
Technical field
The utility model relates to the defrosting control field in Refrigeration Technique, is specially a kind of defrosting recoil simulator by frosting THICKNESS CONTROL.
Background technology
It is the Focal point and difficult point in Refrigeration Technique that defrosting is controlled always.When air-conditioning, refrigeration and Freezing System are moved under the lower operating mode of environment temperature, evaporator temperature can be lower than 0 ℃, and airborne water vapour will be in the frosting gradually of the surface of evaporator fin.Slight frosting is conducive to evaporimeter heat absorption heat exchange, because the first dewfall of water vapour becomes liquid condensation water, condensed water becomes solid-state frosting from liquid state again, can discharge a large amount of useful latent heat, and slight frosting is equivalent to the increasing of evaporimeter heat exchange area.But along with the prolongation of heat pamp, the frosting meeting on finned-tube evaporator surface is more and more.When frosting runs up to after certain thickness, will produce adverse influence to the operation of system, stop up the airspace between fin, cause improper ventilation and evaporimeter heat exchange amount to reduce, cause the Energy Efficiency Ratio of system to reduce, operating cost increases; When serious, can reduce the compressor life-span, system can not normally be moved.Therefore when frosting is to certain thickness, must adopt certain method to remove frosting, to eliminate frosting adverse influence.
As everyone knows, defrosting needs extra time of refrigeration system consumption and energy, as defrosting in advance has increased the time and the energy consumption that defrost; The operating efficiency of system that defrosts as postponed can reduce.Therefore a kind ofly can guarantee defrosting effect, again can be accurately elapsed time and energy according to actual needs, the detection control apparatus defrosting, is applied in air-conditioning, refrigeration and Freezing System, has important practical value.
It is as follows that at present common defrosting detects control method:
1, time defrosting method
This is a kind of the simplest and method least accurately, by detecting the temperature of evaporimeter, when the continuous certain hour of temperature of evaporimeter is less than 0 ℃, just controls refrigeration system and carries out time defrosting one time.
Refrigeration system when operation, frosting number closely related with the temperature and humidity of environment, the variation of temperature and humidity differs larger, thus the amount that causes actual frosting to accumulate also differs larger.When environment temperature is identical, the little frosting of humidity is few, and high humidity frosting is many; When ambient humidity is identical, temperature height frosting is few, and the low frosting of temperature is many; When environment temperature and humidity all change, temperature is low, and frosting is many with high humidity, and temperature is high and the little frosting of humidity is few.
For guaranteeing defrosting effect, defrosting time can only be low according to temperature, high humidity and frosting many in worst situation set, and can not change by actual frosting situation, thereby cause in the situation that most frostings are few, while not needing to defrost, also can enter defrosting operating condition, this is a kind of method that causes refrigeration system can consume more useless defrosting time and energy.
2, intelligent defrosting method
By detecting temperature, pressure, the air quantity isoparametric variation of refrigeration system under frosting state, analyze and sum up frosting rule, then adopt corresponding method to control defrosting.This intelligent defrosting method increases than the accuracy of time defrosting method, but because the duty of different refrigeration systems is variant and impossible consistent, the state of the parts in system also has deviation; Aperture as same in expansion valve, its flow deviation can be up to 20%; Therefore the frosting rule of summing up out can not adapt to other refrigeration system, and can not adapt to operating modes all in same refrigeration system; The complexity also changing because of the parameter such as refrigeration system temperature, pressure, air quantity, sum up frosting rule information content out greatly and accuracy lower, so its workload large, take controller internal memory greatly, versatility and practicality not high, still there is larger defect.
It is refrigeration system temperature while utilizing frosting, pressure, the isoparametric variation of air quantity that conventional refrigeration defrosting detects, by detecting frosting to refrigeration system temperature, pressure, the isoparametric variation of air quantity, the thickness that indirectly reflects frosting, indirectly reflect the degree of frosting, and provide defrosting signal by controller.Fin surface frosting speed and the order of severity, affected by the temperature and humidity of change at random in environment, and the temperature and humidity of change at random changes greatly in environment, but also be subject to the impact of refrigeration system self performance, and because of the structure of different purposes refrigeration system evaporator different, the frosting thickness requirement that causes defrosting is different, as smaller in the thickness of frosting before air-conditioner defrosting, and before freezing defrosting, the thickness of frosting can be more greatly.By detecting frosting to refrigeration system temperature, pressure, the isoparametric variation of air quantity, can not reflect exactly frosting speed and the order of severity.Therefore conventional refrigeration defrosting detects inevitably and exists and need to send in advance the signal that defrosting starts, sometimes also can change too greatly because of temperature and humidity in environment, cause send defrosting commencing signal time inaccurate, it shifts to an earlier date or delay starts the energy loss that defrosting causes, and accounts for the more than 10% of refrigeration system energy consumption.
As the above analysis, accurately and the signal that immediately provides defrosting to start to refrigeration system, should be a kind ofly directly by the defrosting recoil simulator of frosting THICKNESS CONTROL, could be realized.
Utility model content
The technical problem that the utility model solves is to provide a kind of defrosting recoil simulator by frosting THICKNESS CONTROL, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of defrosting recoil simulator by frosting THICKNESS CONTROL, can directly be loaded in air-conditioning, refrigeration and refrigeration system, front-end control facilities as defrost controller, comprise finned-tube evaporator, support, flute profile optoelectronic switch and temp probe, wherein, finned-tube evaporator comprises some fins and condenser pipe and the fixing frame of fin, condenser pipe, and flute profile optoelectronic switch is rack-mount, and support is threaded connection on the frame that part is connected in finned-tube evaporator; In addition, selecting of described finned-tube evaporator, on a fin, be processed with a narrow slit groove, described narrow slit groove is positioned among the notch of flute profile optoelectronic switch, remove the part fin interfering with flute profile optoelectronic switch, described temp probe is bonded among another fin of the other finned-tube evaporator of flute profile optoelectronic switch side by adhesive glue.
In the utility model, the gap size of described narrow slit groove is adjustable, and be preferably Photoelectric infrared switch with the flute profile optoelectronic switch of its collocation, flute profile optoelectronic switch is arranged in fin narrow slit groove, can fin not frosting and frosting when not serious the infrared ray by flute profile optoelectronic switch to control the open and close of defrost controller, and the big or small capable of regulating that regulates the narrow slit of narrow slit groove blocks the accumulation of flute profile optoelectronic switch notch middle infrared (Mid-IR) frosting, reach the object of the thickness of controlling finned-tube evaporator frosting.
In the utility model, described support is preferably square set, for reducing support to the impact of ventilating, makes the frosting of narrow seam smooth.
Operation principle of the present utility model is: by one or several flute profile optoelectronic switch, be arranged on the more serious position of frosting of finned-tube evaporator windward side fin, and by among the gluing fin that is arranged near finned-tube evaporator certain flute profile optoelectronic switch of temp probe, when frosting runs up to certain thickness, frosting meeting is full of the gap of narrow slit groove, and block flute profile optoelectronic switch notch middle infrared (Mid-IR), thereby send signal by flute profile optoelectronic switch, to controller, start defrosting; During defrosting along with the rising of finned-tube evaporator temperature, when temperature rises to the design temperature of temp probe, temp probe sends the signal that defrosting finishes to controller, thereby reaches accurately and for the controller of various air-conditionings, refrigeration and refrigeration system provides defrosting, start the object with end signal in real time.
Beneficial effect: the thickness of the utility model by the frosting of the direct-detection finned-tube evaporator surface control that defrosts, indirectly reflect that with legacy equipment isoparametric variation of temperature, pressure, air quantity of refrigeration system when detecting frosting frosting thickness compares, its advantage is as follows:
1, without starting in advance defrosting, be a kind of method of sending accurately, at random and in real time defrosting commencing signal to controller, overcome the defect that needs to start in advance defrosting in prior art, increases defrosting time and waste energy.
2, can accurately and in real time for various air-conditionings, refrigeration and Freezing System provide defrosting, start and end signal, there is general, simple and reliable feature.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is left TV structure schematic diagram of the present utility model;
Fig. 3 is the A-A cutaway view of Fig. 1.
Wherein: 1, fin; 1-1, narrow slit groove; 2, frame; 3, condenser pipe; 4, flute profile optoelectronic switch; 4-1, flute profile optoelectronic switch notch; 5, support; 6, temp probe.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Preferred embodiment referring to a kind of defrosting recoil simulator by frosting THICKNESS CONTROL of Fig. 1, Fig. 2, Fig. 3, in the present embodiment, defrosting recoil simulator is arranged on the more serious position of frosting of finned-tube evaporator windward side fin, its fin 1 rear portion is provided with some condenser pipes 3, and temp probe 6 is gluing to be arranged among near the fin of finned-tube evaporators certain flute profile optoelectronic switch 4.When frosting runs up to certain thickness, frosting meeting is full of the gap of narrow slit groove 1-1, and blocks the infrared ray in the notch 4-1 of flute profile optoelectronic switch 4, thereby send signal by flute profile optoelectronic switch 4, to controller, starts defrosting.Adjust the width of narrow slit groove 1-1, can control the thickness of frosting.During defrosting, along with the rising of finned-tube evaporator temperature, when temperature rises to the design temperature of temp probe 6, temp probe 6 sends the signal that defrosting finishes to controller, thereby reach accurately and send defrosting to controller in real time, starts the object with end signal.
Fin 1 in the notch of flute profile optoelectronic switch 4 is provided with narrow slit groove 1-1, the infrared ray that is used for not frosting and the not serious flute profile constantly of frosting optoelectronic switch 4 can pass through, and can be by regulating the size of narrow slit groove 1-1, the accumulation of flute profile optoelectronic switch 4 infrared ray frostings is blocked in adjustment, thereby reaches the object of controlling finned-tube evaporator frosting thickness.
Support 5 is block form, for reducing support to the impact of ventilating, makes the frosting at narrow slit groove 1-1 place smooth.
Flute profile optoelectronic switch 4 is arranged on support 5 by screw, support 5 is arranged on the frame 2 of finned-tube evaporator by screw, a narrow slit groove 1-1 of a certain fin 1 processing in finned-tube evaporator, and its narrow slit groove 1-1 is positioned among the notch 4-1 of flute profile optoelectronic switch 4, and the part fin of local removal and 4 interferences of flute profile optoelectronic switch, temp probe 6 is adhesive among near the fin of flute profile optoelectronic switch 4 finned-tube evaporators.Frosting when the narrow slit groove 1-1 position of fin 1, while running up to the notch 4-1 middle infrared (Mid-IR) that blocks flute profile optoelectronic switch 4, obtain the signal that defrosting starts, during defrosting, work as temp probe 6 temperature sensors and reach design temperature, immediately provide the signal of the end that defrosts, reach accurately and for the controller of various air-conditionings, refrigeration and refrigeration system, provide in real time the object of defrosting beginning and end signal.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the defrosting recoil simulator by frosting THICKNESS CONTROL, comprise finned-tube evaporator, support, flute profile optoelectronic switch and temp probe, it is characterized in that, finned-tube evaporator comprises some fins and condenser pipe and the fixing frame of fin, condenser pipe, and flute profile optoelectronic switch is rack-mount, support is threaded connection on the frame that part is connected in finned-tube evaporator; In addition, selecting of described finned-tube evaporator, on a fin, be processed with a narrow slit groove, described narrow slit groove is positioned among the notch of flute profile optoelectronic switch, remove the part fin interfering with flute profile optoelectronic switch, described temp probe is bonded among another fin of the other finned-tube evaporator of flute profile optoelectronic switch side by adhesive glue.
2. a kind of defrosting recoil simulator by frosting THICKNESS CONTROL according to claim 1, is characterized in that, the gap size of described narrow slit groove is adjustable.
3. a kind of defrosting recoil simulator by frosting THICKNESS CONTROL according to claim 1, is characterized in that, flute profile optoelectronic switch is Photoelectric infrared switch.
4. a kind of defrosting recoil simulator by frosting THICKNESS CONTROL according to claim 1, is characterized in that, described support is square set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400976.3U CN203980775U (en) | 2014-07-21 | 2014-07-21 | A kind of defrosting recoil simulator by frosting THICKNESS CONTROL |
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| CN201420400976.3U CN203980775U (en) | 2014-07-21 | 2014-07-21 | A kind of defrosting recoil simulator by frosting THICKNESS CONTROL |
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| CN203980775U true CN203980775U (en) | 2014-12-03 |
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| CN201420400976.3U Expired - Fee Related CN203980775U (en) | 2014-07-21 | 2014-07-21 | A kind of defrosting recoil simulator by frosting THICKNESS CONTROL |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425168A (en) * | 2017-09-04 | 2019-03-05 | 博西华电器（江苏）有限公司 | Refrigerating appliance and its control method |
| CN111609665A (en) * | 2020-05-15 | 2020-09-01 | 珠海格力电器股份有限公司 | Defrosting control method and device |
-
2014
- 2014-07-21 CN CN201420400976.3U patent/CN203980775U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425168A (en) * | 2017-09-04 | 2019-03-05 | 博西华电器（江苏）有限公司 | Refrigerating appliance and its control method |
| CN109425168B (en) * | 2017-09-04 | 2022-02-11 | 博西华电器（江苏）有限公司 | Refrigeration appliance and control method thereof |
| CN111609665A (en) * | 2020-05-15 | 2020-09-01 | 珠海格力电器股份有限公司 | Defrosting control method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160721 |