CN101307973A - Refrigerating device multi- circulating defrosting method and device - Google Patents
Refrigerating device multi- circulating defrosting method and device Download PDFInfo
- Publication number
- CN101307973A CN101307973A CNA2008100293331A CN200810029333A CN101307973A CN 101307973 A CN101307973 A CN 101307973A CN A2008100293331 A CNA2008100293331 A CN A2008100293331A CN 200810029333 A CN200810029333 A CN 200810029333A CN 101307973 A CN101307973 A CN 101307973A
- Authority
- CN
- China
- Prior art keywords
- evaporimeter
- valve
- defrost
- reservoir
- input
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a method and a device for multi-cycle defrosting in a refrigeration plant. The invention is characterized in that: the method is applied to a refrigeration cycle system provided with at least two parallelly connected evaporators; the refrigeration cycle system consists of a compressor, a condenser, a reservoir, evaporators and an air liquid separator which are connected orderly; when the evaporators defrost, a channel of the evaporators and the reservoir and the air liquid separator is cut off, input ends of the evaporators are connected to a high-temperature exhaust end of the compressor, and the output ends of the evaporators are connected between an output end of the condenser and the input ends of the evaporators in the refrigerant cycle. The method and the device can save a heating device required by the defrosting and electrical energy consumed in the defrosting.
Description
[technical field]
The present invention relates to the defrost in the refrigeration system, relate in particular to a kind of refrigerating device multi-circulating defrosting method and device.
[background technology]
Refrigeration system process of refrigerastion in, make the evaporator fin frosting owing to the working media in the evaporator pipeline absorbs heat for a long time.Evaporimeter frosting too much can have a strong impact on refrigeration, therefore needs regularly defrost of evaporimeter.Mainly be to defrost at present, need the consume lot of energy, yet the heat that is discharged in the cooled body need again compressor cooling that it is absorbed, so a large amount of electric energy of waste in heat absorption, heat radiation process by Electric heating.
Fig. 1 is existing refrigeration system theory diagram with two evaporimeters, referring to shown in Figure 1, it comprises compressor 1, condenser 2, reservoir 3, gas-liquid separator 4, reaches evaporimeter A and evaporimeter B, magnetic valve AT1, BT1 and expansion valve PA, PB, its circularly cooling principle is: the HTHP gaseous working medium is discharged in compressor 1 work, working medium after condenser 2 heat radiation liquefy normal temperature state to reservoir 3, pass through magnetic valve AT1, BT1, expansion valve PA .PB again, evaporimeter absorbs heat and enters gas-liquid separator 4, and last working medium is got back to compressor 1 and finished kind of refrigeration cycle.During defrost, need add power supply in addition evaporimeter is heated, with the frost on the dissolving evaporimeter.
[summary of the invention]
The present invention is directed to the above-mentioned defective of prior art, a kind of refrigerating device multi-circulating defrosting method and device are provided, to omit the required heater of defrost and the electric energy of the required consumption of defrost.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of refrigerating device multi-circulating defrosting method, this method are applied to comprise that this cooling cycle system is connected to form successively by compressor, condenser, reservoir, evaporimeter, gas-liquid separator in the cooling cycle system of at least two evaporimeters that are arranged in parallel; When the evaporimeter defrost, the passage of this evaporimeter and reservoir and gas-liquid separator is disconnected, and the input of this evaporimeter is connected to the high-temperature exhaust air end of compressor, the output of this evaporimeter is connected to the output of condenser in the kind of refrigeration cycle between the input of evaporimeter.
Preferably, between described reservoir and the evaporimeter that is connected in parallel, valve T is set, when the evaporimeter defrost is arranged in the evaporimeter, closes this valve T, and the output of the evaporimeter of defrost just is connected to input at refrigerating evaporator.
Preferably, when the evaporimeter defrost is arranged in the evaporimeter, close the blower fan or the water pump of condenser and/or just close evaporator fan in defrost.
Preferably, when evaporimeter stops defrost, the passage of the reservoir of this evaporimeter and gas-liquid separator is connected, and after the high-temperature exhaust air end of the input of evaporimeter and compressor disconnected, again with the output of evaporimeter with just in the input disconnection of refrigerating evaporator.
A kind of refrigerating device multi-circulating defrosting device, this device is in turn connected to form the kind of refrigeration cycle passage by compressor, condenser, reservoir, evaporimeter, gas-liquid separator, described evaporimeter is at least two, and evaporimeter is connected in parallel between reservoir and the gas-liquid separator, be provided with pipeline between evaporimeter input and the compressor high-temperature exhaust air end, and be provided with the valve T2 of this pipeline break-make of control; The output of evaporimeter and condenser output are provided with pipeline between the evaporimeter input, and are provided with the check valve D of the unidirectional conducting of this pipeline of control, and unidirectional is that evaporimeter is between condenser output and the evaporimeter input by direction; Be provided with the valve T4 of control pipeline break-make between evaporimeter and the gas-liquid separator; Also be provided with the valve T1 of control pipeline break-make between reservoir and the evaporimeter.
Preferably, also be provided with valve T between described reservoir and the valve T1, the pipeline of drawing from the output of evaporimeter is connected between valve T and the T1.
Preferably, described valve T is provided with pressure control sensor, and when pressure that valve T left and right sides pressure at two ends difference surpass to be set, valve T conducting is reduced to the pressure of setting until pressure differential, and valve T closes.
Preferably, valve T1 and evaporimeter input are provided with expansion valve, also are provided with the valve T3 that is arranged in parallel with this expansion valve.
As can be seen from the above technical solutions, the present invention has the following advantages:
1, owing to utilize high temperature refrigerant that refrigerating evaporator and compressor discharge to need frost on the defrosting evaporator fin, reaches the purpose of defrost, and omit described heating tool of defrost in the past and electric energy that electrical heating in the past consumed with thawing;
2, owing to the input that the low temperature liquid working medium after the defrosting evaporator defrost is imported to refrigerating evaporator is used for refrigeration, save the required electric energy that partly freezes;
3, during the evaporimeter defrost, utilize the working medium refrigeration after the defrost, can close evaporator fan and condenser fan or water pump, blower fan or the water pump of saving evaporator fan and condenser rotate institute's energy requirement;
4, owing to utilize working medium refrigeration after the defrost,, can reduce the budget of compressor design load, reduce compressor horsepower if only need keep cryogenic temperature;
5, only need on original cooling cycle system basis pipeline to be changed slightly, increase some valves, transform simply, expense is low.
The inventor does experiment with the island formula showcase of two eight chis, defrost technology of the present invention is applied in the refrigeration system island formula showcase institute power consumption to be compared with the preceding island of this technology of application formula showcase institute power consumption: the running of cabinet inner blower, calculate for three times by defrost in a day, electric current is 35A, voltage is 380V, a defrost time is 38 minutes, needed to consume 26 degree in one day, promptly needed 9490 degree in 1 year, the temperature that raise could be with defrost the time in 38 minutes is fallen and compressor need turn round, three-phase current is 9A, and voltage is 380V, and moving 3 times one day needs to consume 19 degree, to consume 6935 degree in 1 year, add up to 1 year with electric consumption 16425, and the present invention omits defrost institute consumes power and can also reduce compressor horsepower, can save about 4000 degree, clean 12000 degree of saving, this shows that the present invention has unprecedented value to the huge innovation of the energy-conservation aspect of refrigeration system.
[description of drawings]
Fig. 1 is this existing refrigeration principle block diagram with two evaporimeters;
Fig. 2 is the present invention's one refrigeration, defrost preferred embodiment theory diagram;
Fig. 3 is another refrigeration of the present invention, defrost preferred embodiment theory diagram.
[specific embodiment]
The present invention is further detailed explanation below in conjunction with the specific embodiment.
A kind of refrigerating device multi-circulating defrosting method of the present invention, this method is applied to comprise that this cooling cycle system is connected to form successively by compressor, condenser, reservoir, evaporimeter, gas-liquid separator in the cooling cycle system of at least two evaporimeters that are arranged in parallel; When the evaporimeter defrost, the passage of this evaporimeter and reservoir and gas-liquid separator is disconnected, and the input of this evaporimeter is connected to the high-temperature exhaust air end of compressor, the output of this evaporimeter is connected to the output of condenser in the kind of refrigeration cycle between the input of evaporimeter.
As preferred implementation of the present invention, between described reservoir and the evaporimeter that is connected in parallel, valve T is set, when the evaporimeter defrost is arranged in the evaporimeter, close this valve T, and the output of the evaporimeter of defrost just is connected to input at refrigerating evaporator.
As preferred implementation of the present invention, when the evaporimeter defrost is arranged in the evaporimeter, close the blower fan or the water pump of condenser, just close evaporator fan in defrost.
As preferred implementation of the present invention, when evaporimeter stops defrost, the passage of the reservoir of this evaporimeter and gas-liquid separator is connected, and with the input of evaporimeter and the high-temperature exhaust air end of compressor, with the output of evaporimeter with just in the input disconnection of refrigerating evaporator.
Referring to shown in Figure 2, be that example is done further explanation to structure of the present invention and operation principle with multi-circulating defrosting device below with two evaporimeters:
Multi-circulating defrosting device of the present invention connects to form kind of refrigeration cycle successively by compressor 1, gs-oil separator 5, condenser 2, reservoir 3, evaporimeter, gas-liquid separator 4, wherein evaporimeter comprises evaporimeter A and evaporimeter B, it is parallel-connected in the kind of refrigeration cycle, some magnetic valves, check valve and expansion valve.Magnetic valve is under the control of control circuit, and when evaporimeter was in refrigerating state, T1 conducting, T2 closed, T3 closes, the T4 conducting, and when opposite evaporimeter was in the defrost state, T1 closed, T2 conducting, T3 conducting, T4 are closed; And expansion valve is only just understood conducting when refrigeration.When evaporimeter A refrigeration, evaporimeter B refrigeration, the flow process of working medium is in the circulation: compressor 1 is discharged the HTHP gaseous working medium, working medium enters condenser 2 heat radiations through gs-oil separator 5, become the normal temperature liquid state after the working medium heat radiation and enter reservoir 3 again, pass through magnetic valve T, AT1, BT1, enter evaporimeter A, evaporimeter B respectively through expansion valve PA, PB again, working medium absorbs heat in the evaporimeter after expanding through expansion valve, become high-temperature gas, enter gas-liquid separator 4 by AT4, BT4, working medium is sucked by compressor and finishes kind of refrigeration cycle in the gas-liquid separator 4.When evaporimeter A refrigeration, evaporimeter B defrost, the working medium flow process is: compressor 1 is discharged the HTHP gaseous working medium, working medium enters condenser 2 through gs-oil separator 5 parts, major part enters evaporimeter B by magnetic valve BT2, BT3, high-temperature gas working medium enters the frost of melting behind the evaporimeter B on the evaporator fin, become the normal temperature liquid refrigerant, working medium enters by check valve BD again and enters evaporimeter A by AT1, PA, gets back to compressor 1 through AT4, gas-liquid separator 4 behind the absorption heat and finishes circulation.Become the normal temperature liquid state after wherein the part high-temperature gas working medium that enters condenser 2 dispel the heat in condenser, converge through reservoir 3, magnetic valve T and the liquid refrigerant that flows through from check valve BD again and enter AT1 and enter evaporimeter A again.
By above working medium flow process, after working medium enters evaporimeter B defrost, liquefy working medium, inflow evaporator A again, A freezes to evaporimeter, effectively utilize low temperature among the evaporimeter B, and refrigeration-defrost complementation is realized to the effective defrost of evaporimeter B in working medium process compressor 1 back that absorbs heat among the evaporimeter A, reduces energy resource consumption, and can reduce the budget that compressor design is loaded, reduce compressor horsepower.
After evaporimeter A refrigeration, evaporimeter B defrost enter recurrent state, also can close magnetic valve T, close blower fan or the water pump and the evaporimeter B blower fan of condenser simultaneously, save blower fan or the water pump and the required electric energy of evaporimeter B blower fan of open cold condenser.After magnetic valve T closes, condenser 2 effect of condensation that do not recur, but serve as container storage HTHP gaseous working medium, for the usefulness of evaporimeter B defrost, make full use of the heat that evaporimeter A refrigeration back working medium absorbs.
In refrigeration and defrost state, also have a critical condition, state when promptly refrigeration is changed mutually with defrost, note the control of pressure in the pipeline this moment, otherwise the accident of be damaged easily compressor and evaporimeter.With evaporimeter B defrost is example; before entering the defrost state 3-5 minute the time; need close BT1; normal temperature liquid refrigerant in the evaporimeter B kind of refrigeration cycle is discharged; will occur most of working medium like this and accumulate in the situation of condenser 2 to reservoir 3; big pressure differential appears in the magnetic valve T left and right sides; when pressure is excessive, will damage compressor and evaporimeter; therefore; the present invention also is provided with pressure sensor on magnetic valve T, when magnetic valve left and right sides pressure during greater than setting pressure, what magnetic valve was in good time opens; so that pressure remains under this pressure, refrigeration system is effectively protected.Need the liquid refrigerant in the defrosting evaporator is discharged after same defrost is finished, need close BT2, prevent from not have the liquid refrigerant of evaporation to enter vapour liquid separator 4 and damage compressor.
Referring to shown in Figure 3, its overall defrost thinking is with embodiment illustrated in fig. 2 identical again, and difference only is: check valve AD, BD no longer are connected to after the valve T, but are connected between condenser 2 and the reservoir 3.
Fig. 2 is compared with existing cooling cycle system Fig. 1 respectively with Fig. 3, and as can be seen, the present invention has only slight modification to pipeline, and increases several magnetic valves, and it is little to revise engineering, and expense is very low.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1, a kind of refrigerating device multi-circulating defrosting method, it is characterized in that: this method is applied to comprise that this cooling cycle system is connected to form successively by compressor, condenser, reservoir, evaporimeter, gas-liquid separator in the cooling cycle system of at least two evaporimeters that are arranged in parallel; When the evaporimeter defrost, the passage of this evaporimeter and reservoir and gas-liquid separator is disconnected, and the input of this evaporimeter is connected to the high-temperature exhaust air end of compressor, the output of this evaporimeter is connected to the output of condenser in the kind of refrigeration cycle between the input of evaporimeter.
2, refrigerating device multi-circulating defrosting method according to claim 1, it is characterized in that: between described reservoir and the evaporimeter that is connected in parallel, valve T is set, when the evaporimeter defrost is arranged in the evaporimeter, close this valve T, and the output of the evaporimeter of defrost just is connected to input at refrigerating evaporator.
3, refrigerating device multi-circulating defrosting method according to claim 1 and 2 is characterized in that: when the evaporimeter defrost is arranged in the evaporimeter, close the blower fan of condenser or water pump and just close evaporator fan in defrost.
4, refrigerating device multi-circulating defrosting method according to claim 1 and 2, it is characterized in that: when evaporimeter stops defrost, the reservoir of this evaporimeter and the passage of gas-liquid separator are connected, and after the high-temperature exhaust air end of the input of evaporimeter and compressor disconnected, again the output of evaporimeter and the input at refrigerating evaporator are just disconnected.
5, a kind of refrigerating device multi-circulating defrosting device, this device is in turn connected to form the kind of refrigeration cycle passage by compressor, condenser, reservoir, evaporimeter, gas-liquid separator, it is characterized in that: described evaporimeter is at least two, and evaporimeter is connected in parallel between reservoir and the gas-liquid separator, be provided with pipeline between evaporimeter input and the compressor high-temperature exhaust air end, and be provided with the valve T2 of this pipeline break-make of control; The output of evaporimeter and condenser output are provided with pipeline between the evaporimeter input, and are provided with the check valve D of the unidirectional conducting of this pipeline of control, and unidirectional is that evaporimeter is between condenser output and the evaporimeter input by direction; Be provided with the valve T4 of control pipeline break-make between evaporimeter and the gas-liquid separator; Also be provided with the valve T1 of control pipeline break-make between reservoir and the evaporimeter.
6, according to the described refrigerating device multi-circulating defrosting device of claim 5, it is characterized in that: also be provided with valve T between described reservoir and the valve T1, the pipeline of drawing from the output of evaporimeter is connected between valve T and the T1.
7, refrigerating device multi-circulating defrosting device according to claim 6, it is characterized in that: described valve T is provided with pressure control sensor, when valve T left and right sides pressure at two ends difference surpasses the pressure of setting, and valve T conducting, reduce to the pressure of setting until pressure differential, valve T closes.
8, refrigerating device multi-circulating defrosting device according to claim 7 is characterized in that: valve T1 and evaporimeter input are provided with expansion valve, also are provided with the valve T3 that is arranged in parallel with this expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100293331A CN101307973A (en) | 2008-07-09 | 2008-07-09 | Refrigerating device multi- circulating defrosting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100293331A CN101307973A (en) | 2008-07-09 | 2008-07-09 | Refrigerating device multi- circulating defrosting method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101307973A true CN101307973A (en) | 2008-11-19 |
Family
ID=40124545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100293331A Pending CN101307973A (en) | 2008-07-09 | 2008-07-09 | Refrigerating device multi- circulating defrosting method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101307973A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348189A (en) * | 2011-01-28 | 2013-10-09 | 特灵国际有限公司 | Wear-leveling for components of an auxiliary heat source |
| WO2013189076A1 (en) * | 2012-06-18 | 2013-12-27 | 合肥华凌股份有限公司 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
| CN106766332A (en) * | 2016-12-20 | 2017-05-31 | 珠海格力电器股份有限公司 | Air-conditioning system unit and air-conditioning system |
| CN107816818A (en) * | 2017-11-29 | 2018-03-20 | 天津商业大学 | A kind of folding type cooling system of freezer with hot gas defrosting |
| CN112944754A (en) * | 2021-04-01 | 2021-06-11 | 刘兵兵 | Constant-temperature refrigeration house system with hot fluorine automatic defrosting function |
| CN114464859A (en) * | 2021-12-28 | 2022-05-10 | 江苏硕阳电子科技有限公司 | Positive displacement heat dissipation equipment for flow battery |
-
2008
- 2008-07-09 CN CNA2008100293331A patent/CN101307973A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348189A (en) * | 2011-01-28 | 2013-10-09 | 特灵国际有限公司 | Wear-leveling for components of an auxiliary heat source |
| US9163843B2 (en) | 2011-01-28 | 2015-10-20 | Trane International Inc. | Wear-leveling for components of an auxiliary heat source |
| CN103348189B (en) * | 2011-01-28 | 2016-08-10 | 特灵国际有限公司 | Consume horizontal survey for each parts of auxiliary thermal source |
| WO2013189076A1 (en) * | 2012-06-18 | 2013-12-27 | 合肥华凌股份有限公司 | Refrigeration device, refrigeration system and defrosting control method for refrigeration device |
| CN106766332A (en) * | 2016-12-20 | 2017-05-31 | 珠海格力电器股份有限公司 | Air-conditioning system unit and air-conditioning system |
| CN106766332B (en) * | 2016-12-20 | 2023-05-30 | 珠海格力电器股份有限公司 | Air conditioning system unit and air conditioning system |
| CN107816818A (en) * | 2017-11-29 | 2018-03-20 | 天津商业大学 | A kind of folding type cooling system of freezer with hot gas defrosting |
| CN112944754A (en) * | 2021-04-01 | 2021-06-11 | 刘兵兵 | Constant-temperature refrigeration house system with hot fluorine automatic defrosting function |
| CN114464859A (en) * | 2021-12-28 | 2022-05-10 | 江苏硕阳电子科技有限公司 | Positive displacement heat dissipation equipment for flow battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103335463B (en) | A kind of pump type heat air cooling air conditioner device subregion functionalization defrost system | |
| CN100533003C (en) | Air source solution heat pump device based on regeneration of reverse osmosis membrane solution | |
| CN104879975A (en) | Hot-gas bypass and phase change heat storage combined defrosting system applied to refrigerator | |
| CN104110920B (en) | A kind of air source heat pump system recycling heat of compressor | |
| CN105020924A (en) | Air source enhanced vapor injection heat pump system | |
| CN101307973A (en) | Refrigerating device multi- circulating defrosting method and device | |
| CN202973694U (en) | Double-fin double-fan hot pump system capable of defrosting in complementary mode | |
| CN103808102A (en) | Heat-driven defrosting device using natural circulation and defrosting method using same | |
| CN201293488Y (en) | Frosting free air source heat pump | |
| CN104344619A (en) | Double-system heat pump defrosting method and device | |
| CN104061727A (en) | Air source heat pump defrosting device based on fast evaporation of liquid drops in initial process of frosting | |
| CN203533967U (en) | Air source heat pump unit with bi-directional supercooling section | |
| CN202648031U (en) | Dual-heat-source, air-injection and enthalpy-increasing heat pump air-conditioner | |
| CN104482651A (en) | Air source heat pump water heating unit and defrosting control method thereof | |
| CN2937962Y (en) | Refrigerator for defrost of evaporimeter using refrigerant discharged by compressor | |
| CN204593991U (en) | A kind of hot pump in low temp superposition phase-change accumulation energy control defrosting system | |
| CN204388354U (en) | A kind of air friction drag | |
| CN112146301B (en) | Evaporative cold screw cold and hot water unit with total heat recovery | |
| CN105180568A (en) | Defrosting control method of refrigerator | |
| CN203478687U (en) | Refrigeration system | |
| CN103900311B (en) | Refrigeration system and use the fridge-freezer of this refrigeration system | |
| CN106288484B (en) | A kind of air source heat pump system and its defrosting control method | |
| CN207407559U (en) | A kind of load down cold insulation defrosting system by superheated vapour and refrigeration equipment | |
| CN201237411Y (en) | Multi-cycle defrosting apparatus of refrigerating device | |
| CN203489560U (en) | Dual-system heat pump defroster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20081119 |