CN1164013A - Defroster of heat exchanger and defrosting method using same - Google Patents
Defroster of heat exchanger and defrosting method using same Download PDFInfo
- Publication number
- CN1164013A CN1164013A CN96123954A CN96123954A CN1164013A CN 1164013 A CN1164013 A CN 1164013A CN 96123954 A CN96123954 A CN 96123954A CN 96123954 A CN96123954 A CN 96123954A CN 1164013 A CN1164013 A CN 1164013A
- Authority
- CN
- China
- Prior art keywords
- cold
- pipe
- evaporimeter
- producing medium
- expansion gear
- 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
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Classifications
-
- 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
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
-
- 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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/141—Removal by evaporation
- F25D2321/1411—Removal by evaporation using compressor heat
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention provides a defroster of heat exchanger including a by-pass pipe connecting with a compressor and a vent-pipe of a condensator and supplying high temperature and high pressure refrigerant; a capillary connecting with the vent-pipe through the by-pass pipe and is used for expanding the high temperature and high pressure refrigerant; a defrosting pipe for defrosting connecting with the capillary by an end, and the other end runs through a evaporator; and a valve arranged in the by-pass pile for selecting passage of the refrigerant in the defrosting circular.
Description
The present invention relates to a kind of heat exchanger, more particularly, relate to a kind of defroster and use the Defrost method of this device, this defroster can utilize the heat of the cold-producing medium that is provided by condenser and compressor to remove frost in the evaporimeter.
In general, evaporimeter comprises fin and the Duo Gen refrigerant pipe that multi-disc is set up in parallel, and cold-producing medium flows through the refrigerant pipe that passes these fins.The cold-producing medium and the extraneous air that flow through these refrigerant pipes carry out heat exchange, with the cooling air.Like this, because this heat exchange makes and produces frost on the fin.Frost becomes the key factor that reduces effectiveness of heat exchanger.Therefore, need use to remove these white defrosters.
Referring to Fig. 1, conventional heat exchanger comprises the compressor 1 that is used for compressed refrigerant and cold-producing medium is transformed into high temperature and high pressure gaseous refrigerant; Blast pipe 2, it links to each other with the compressor 1 that flows into cold-producing medium; Condenser 3, it links to each other with compressor 1 by blast pipe 2, is used for condensation and converts the liquid cold-producing medium of HTHP to through refrigerant compressed and with gaseous refrigerant; Capillary 4, it links to each other with condenser 3 and is used for the expansion liquid state cold-producing medium and converts thereof into low-temperature low-pressure refrigerant, and gaseous refrigerant is mixed with liquid refrigerant; And evaporimeter 5, it links to each other with capillary 4, is used to evaporate the cold-producing medium of mixing, makes mix refrigerant and extraneous air carry out heat exchange.The cold-producing medium of evaporation flows into compressor 1 through the tube connector 6 of single kind of refrigeration cycle, and then discharges from compressor 1, so that repeat above-mentioned kind of refrigeration cycle.
As shown in Figure 2, evaporimeter 2 comprises that fin 8 that multi-disc be arranged in parallel, many can flow through cold-producing medium in it and pass the refrigerant pipe 7 of fin 8 and pass fin 8 and in order to remove the defrosting pipe 9 of fin 8 lip-deep frosts.Electrical heating wire heating fin 8 in the defrosting pipe is to melt frost.
But, in above-mentioned evaporimeter 2, exist electrical heating wire and be connected on the 200W power supply and make 150Wh electrical power, promptly about 10% the problem of gross electric capacity consumption on single defrost cycle.In addition, because during defrost cycle, the temperature that makes refrigerating chamber from the heat of defrosting pipe 9 rises to-6 ℃ from-18 ℃, has therefore reduced refrigerating efficiency.
An object of the present invention is to provide a kind of defroster of heat exchanger and use the Defrost method of this defroster, wherein remove frost in the evaporimeter, to reduce the consumption of electric energy with high-temperature high-pressure refrigerant.
Another object of the present invention provides a kind of defroster of heat exchanger and uses the Defrost method of this defroster, to prevent in refrigerating chamber and the rising of refrigeration indoor temperature.
In order to achieve this end, heat exchanger of the present invention comprises the compressor that is used for compressed refrigerant and cold-producing medium is transformed into high temperature and high pressure gaseous refrigerant; Link to each other with compressor by a blast pipe, be used for the compressed cold-producing medium of condensation and be converted into the condenser of the liquid cold-producing medium of HTHP; Cold-producing medium that is condensed and first capillary that is converted into low-temperature low-pressure refrigerant, gaseous refrigerant is mixed with liquid refrigerant link to each other with condenser, are used to expand; Link to each other, be used to make the evaporimeter that carries out heat exchange between the cold-producing medium of mixing and the extraneous air with first capillary; And link to each other with evaporimeter with blast pipe and utilize high-temperature high-pressure refrigerant to remove the defroster of the frost in the evaporimeter.
Defroster comprise the high-temperature high-pressure refrigerant that links to each other with blast pipe and can flow into bypass pipe, by bypass pipe link to each other with blast pipe and second capillary of the high-temperature high-pressure refrigerant that is used for expanding, be used to defrost and the one end be connected on second capillary and its other end run through evaporimeter defrosting pipe, reach being used in bypass pipe and select the valve of cold-producing medium in the path of defrost cycle.
Fig. 1 is the schematic diagram of conventional heat exchanger;
Fig. 2 is the view of the evaporimeter in the presentation graphs 1;
Fig. 3 is the schematic diagram of heat exchanger of the present invention;
Fig. 4 is the pressure-enthalpy chart of heat exchanger of the present invention.
With reference to Fig. 3, heat exchanger of the present invention comprises the compressor 101 that is used for compressed refrigerant and converts thereof into high temperature and high pressure gaseous refrigerant; Be installed on the compressor 101 blast pipe 102 of circulation cold-producing medium; Link to each other, be used for condensation refrigerant compressed and gaseous refrigerant is transformed into the condenser 103 of the liquid cold-producing medium of HTHP by blast pipe 102 and compressor 101; First capillary 104 that links to each other, is used for the expansion liquid state cold-producing medium with condenser 103 and be converted into low-temperature low-pressure refrigerant, gaseous refrigerant is mixed with liquid refrigerant; Link to each other, be used to evaporate the cold-producing medium of mixing with first capillary 104 so that the evaporimeter 105 that carries out heat exchange between cold-producing medium that mixes and the extraneous air; And be connected the defroster that is used to remove the frost in the evaporimeter 105 between blast pipe 102 and the evaporimeter 105.Cold-producing medium after the evaporation flows into compressor 101 through the tube connector 106 of single kind of refrigeration cycle.
Defroster is included in being used in kind of refrigeration cycle or the defrost cycle and selects by compressor 101 refrigerant compressed or by the valve 108 of condenser 103 condensed refrigerant paths; With the bypass pipe 107 that the blast pipe 102 that is connected compressor 101 and condenser 103 links to each other, cold-producing medium is owing to the action of the valve in the defrost cycle flows into this bypass pipe 107; Second capillary 110 that links to each other, is used for the swell refrigeration agent by blast pipe 102 and bypass pipe 107 and compressor 101 and condenser 103; And run through evaporimeter 105, be used to remove the defrosting pipe 109 of the frost in the evaporimeter 105.
In above-mentioned heat exchanger, the high temperature and high pressure gaseous refrigerant that is compressed by compressor 101 flows into condenser 103 by blast pipe 102.The extraneous air of this high temperature and high pressure gaseous refrigerant and condenser 103 carries out heat exchange, makes above-mentioned gaseous refrigerant be transformed into the liquid cold-producing medium of HTHP, flows into first capillary 104 then.First capillary, 104 expansion liquid state cold-producing mediums make it to be transformed into the low-temp low-pressure mix refrigerant.The cold-producing medium that mixes expands in evaporimeter 105, so that carry out heat exchange with extraneous air, the temperature in refrigerating chamber or the refrigerating chamber is descended.The cold-producing medium that is evaporated flows into the compressor 101 of single kind of refrigeration cycle once more.
In the kind of refrigeration cycle process, when the detected temperature of sensor (not shown) is lower than set point of temperature, promptly detect when in evaporimeter 105, producing frost, control device (not shown) output defrosting signal makes opening of valves and compressor 101 is shut down.Because the unlatching of valve makes by the liquid cold-producing medium of the HTHP of condenser 103 condensations and flows into second capillary 110 through bypass pipe 107.The liquid refrigerant of these second capillary, 110 expansion condensations is discharged into it defrosting pipe 109 then.Because this defrosting pipe 109 runs through evaporimeter 105 and links to each other with compressor 101, the therefore cold-producing medium heating fumigators 105 that expands through second capillary 110 with except that the frost in it, and then flows into the compressor 101 of single defrost cycle.
When the pressure of evaporimeter 105 was identical with pressure in the condenser 103 after defrost cycle began for 10 seconds, control device started compressor 101 once more, to provide high temperature and high pressure gaseous refrigerant to defrosting pipe 109.After this, when the temperature of evaporimeter 105 was higher than the temperature of regulation, sensing device detected this temperature, so that compressor 101 is shut down shut off valve 108.
Fig. 4 is pressure enthalpy (P-H) figure of heat exchange of the present invention.In this P-H plane, the state at label 201 expression blast pipe places, the state at 202 expression evaporator inlet places, the state at 203 expression evaporator outlet places, the state of 204 expression cold-producing mediums before just will flowing into compressor.As shown in the figure, defrosting heat, (be between the heat 203 at the heat 202 at evaporator inlet place and evaporator outlet place poor) equals the heat of compression, the heat that (promptly just in time between the heat 202 at heat before compressor 204 and evaporator inlet place poor) and structure by compressor cause, (be the heat 203 at evaporator outlet place and just in time poor between the heat before compressor 204) sum.
In above-mentioned heat exchanger,, therefore reduced the consumption of electric energy because high-temperature high-pressure refrigerant flows directly into evaporimeter to remove the frost in it.In addition, because the temperature of the cold-producing medium of inflow evaporator is lower than the temperature of the cold-producing medium of discharging from compressor or condenser, raise so can prevent the temperature of refrigerating chamber and refrigerating chamber.In fact, utilize defrost cycle, can make the temperature in the refrigerating chamber rise to-15 ℃ from-18 ℃.Yet being approximately that 3 ℃ the about 12 ℃ temperature difference of the temperature difference and having of traditional defroster compares is inappreciable numerical value.
Though described preferred form of the present invention above, it will be appreciated that those skilled in the art obviously can make some modification under the situation that does not exceed the spirit and scope of the present invention.
Therefore, scope of the present invention is only determined by claim.
Claims (15)
1, a kind of defroster that is applicable to heat exchanger, it has condenser that a compressor, one link to each other with compressor by a pipe, expansion gear that links to each other with condenser and an evaporimeter that links to each other with expansion gear, and this device comprises:
A defrosting pipe, it links to each other with condenser with compressor, so that high-temperature high-pressure refrigerant flows in it, defrosting pipe runs through evaporimeter, to defrost; And
The device that is used for the swell refrigeration agent, this expansion gear is installed in the defrosting pipe.
2, according to the defroster that is applicable to heat exchanger of claim 1, it also further comprises the valve in the defrosting pipe, and it is used for the path at kind of refrigeration cycle and defrost cycle selection cold-producing medium.
3, according to the defroster that is applicable to heat exchanger of claim 1, wherein expansion gear comprises a capillary.
4, a kind of heat-exchange device, it comprises:
The device that is used for compressed refrigerant;
The device that is used for the condensation refrigerant compressed, this condensing unit links to each other with compression set by a pipe;
Be used to expand first expansion gear of condensed refrigerant, this first expansion gear links to each other with condensing unit;
Be used to evaporate the device of the cold-producing medium that is inflated, this vaporising device links to each other with first expansion gear; And
The defroster that is used to defrost, an end of this defroster links to each other with the pipe that is connected compressor and condenser, and the other end links to each other with evaporimeter.
5, according to the heat exchanger device of claim 4, wherein this expansion gear comprises a capillary.
6, according to the heat exchanger device of claim 4, wherein defroster comprises:
With the defrosting pipe that described pipe links to each other, this defrosting pipe runs through evaporimeter, so that remove the frost in the evaporimeter; And
Be used to expand second expansion gear of the cold-producing medium that flows into defrosting pipe, this expansion gear is installed in the defrosting pipe.
7,, further comprise a valve that is installed in the defrosting pipe, to select the refrigerant path in cold-producing medium circulation and the defrost cycle according to the heat exchanger device of claim 6.
8, according to the heat exchanger device of claim 6, wherein second expansion gear comprises a capillary.
9, a kind of heat-exchange device, it comprises:
The device that is used for compressed refrigerant;
The device that is used for the compressed cold-producing medium of condensation, this condensing unit links to each other with compression set by a pipe;
Be used to expand first expansion gear of condensed refrigerant, this first expansion gear links to each other with condensing unit;
Be used to evaporate the device of the cold-producing medium of expansion, this vaporising device links to each other with first expansion gear; And
The defroster that is used to defrost, an end of this defroster links to each other with described pipe, and the other end runs through evaporimeter, to defrost in evaporimeter; And
Be used to expand second expansion gear of the cold-producing medium that flows into defrosting pipe, this second expansion gear is installed in the defrosting pipe.
10, according to the heat-exchange device of claim 9, further comprise a valve that is installed in the defrosting pipe, this valve is used to select the path of cold-producing medium in kind of refrigeration cycle and defrost cycle.
11, according to the heat-exchange device of claim 9, wherein second expansion gear comprises a capillary.
12, a kind of Defrost method of heat-exchange device comprises the steps:
Detect the temperature of evaporimeter;
Make high-temperature high-pressure refrigerant flow into defrosting pipe through condenser condenses;
The cold-producing medium that expansion is condensed; And
Make the cold-producing medium of expansion flow through evaporimeter, to be used for heating.
13, according to the Defrost method of the heat-exchange device of claim 12, the step that wherein makes cold-producing medium flow into defrosting pipe comprises that open valve is to select the step in the path of cold-producing medium in defrost cycle.
14, according to the Defrost method of the heat-exchange device of claim 12, also comprise the steps:
When being lower than set point of temperature, the temperature of evaporimeter makes compressor shutdown; And
When being higher than the temperature of cool cycles regulation, the temperature of evaporimeter resets compressor.
15, according to the Defrost method of the heat-exchange device of claim 14, reset the step of compressor when the pressure that also further is included in evaporimeter is approximately equal to the pressure of condenser, this step is in order to provide the high-temperature high-pressure refrigerant of compressed machine compression to defrosting pipe.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950067162A KR970047602A (en) | 1995-12-29 | 1995-12-29 | Defroster of evaporator |
| KR67162/95 | 1995-12-29 | ||
| KR67162/1995 | 1995-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1164013A true CN1164013A (en) | 1997-11-05 |
| CN1110674C CN1110674C (en) | 2003-06-04 |
Family
ID=19447566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96123954A Expired - Fee Related CN1110674C (en) | 1995-12-29 | 1996-12-29 | Defroster of heat exchanger and defrosting method using same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR970047602A (en) |
| CN (1) | CN1110674C (en) |
| IT (1) | IT1289523B1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100485290C (en) * | 2000-09-01 | 2009-05-06 | 辛文特公司 | Method and arrangement for defrosting vapor compression system |
| CN102261631A (en) * | 2011-06-23 | 2011-11-30 | 武汉朗肯节能技术有限公司 | Heat pump steam engine |
| WO2012058844A1 (en) * | 2010-11-04 | 2012-05-10 | 三花丹佛斯（杭州）微通道换热器有限公司 | Evaporator and refrigerating system with said evaporator thereof |
| CN104110925A (en) * | 2013-04-17 | 2014-10-22 | 浙江海洋学院 | Freezer with deicing device |
| CN105318617A (en) * | 2014-08-05 | 2016-02-10 | 上海爱斯佩克环境设备有限公司 | Frostless freezing loop of environmental test device |
| CN105890268A (en) * | 2015-02-13 | 2016-08-24 | 旺矽科技股份有限公司 | Cooling system with defrosting function |
| CN107917570A (en) * | 2016-10-11 | 2018-04-17 | 松下电器产业株式会社 | Refrigerator and its control method |
| CN111623568A (en) * | 2020-04-28 | 2020-09-04 | 珠海格力电器股份有限公司 | Refrigerating unit and control method thereof |
| CN114646178A (en) * | 2020-12-17 | 2022-06-21 | 青岛海尔生物医疗股份有限公司 | Defrosting control method and refrigeration equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100413099B1 (en) * | 1998-12-29 | 2004-04-03 | 주식회사 대우일렉트로닉스 | system for preventing excess-frosting of evaporator of refrigerator using refrigerating circuit and method thereof |
-
1995
- 1995-12-29 KR KR1019950067162A patent/KR970047602A/en not_active Application Discontinuation
-
1996
- 1996-12-24 IT IT96MI002739A patent/IT1289523B1/en active IP Right Grant
- 1996-12-29 CN CN96123954A patent/CN1110674C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100485290C (en) * | 2000-09-01 | 2009-05-06 | 辛文特公司 | Method and arrangement for defrosting vapor compression system |
| US9285145B2 (en) | 2010-11-04 | 2016-03-15 | Sanhua (Hangzhou) Micro Channel Heat Exchange Co., Ltd. | Evaporator and refrigeration system comprising the same |
| WO2012058844A1 (en) * | 2010-11-04 | 2012-05-10 | 三花丹佛斯（杭州）微通道换热器有限公司 | Evaporator and refrigerating system with said evaporator thereof |
| CN102261631B (en) * | 2011-06-23 | 2013-12-25 | 武汉朗肯节能技术有限公司 | Heat pump steam engine |
| CN102261631A (en) * | 2011-06-23 | 2011-11-30 | 武汉朗肯节能技术有限公司 | Heat pump steam engine |
| CN104110925A (en) * | 2013-04-17 | 2014-10-22 | 浙江海洋学院 | Freezer with deicing device |
| CN105318617A (en) * | 2014-08-05 | 2016-02-10 | 上海爱斯佩克环境设备有限公司 | Frostless freezing loop of environmental test device |
| CN105890268A (en) * | 2015-02-13 | 2016-08-24 | 旺矽科技股份有限公司 | Cooling system with defrosting function |
| CN105890268B (en) * | 2015-02-13 | 2020-07-10 | 旺矽科技股份有限公司 | Cooling system with defrosting function |
| CN107917570A (en) * | 2016-10-11 | 2018-04-17 | 松下电器产业株式会社 | Refrigerator and its control method |
| CN107917570B (en) * | 2016-10-11 | 2021-04-02 | 松下电器产业株式会社 | Refrigerator and control method thereof |
| CN111623568A (en) * | 2020-04-28 | 2020-09-04 | 珠海格力电器股份有限公司 | Refrigerating unit and control method thereof |
| CN114646178A (en) * | 2020-12-17 | 2022-06-21 | 青岛海尔生物医疗股份有限公司 | Defrosting control method and refrigeration equipment |
| CN114646178B (en) * | 2020-12-17 | 2023-09-15 | 青岛海尔生物医疗股份有限公司 | Defrosting control method and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970047602A (en) | 1997-07-26 |
| IT1289523B1 (en) | 1998-10-15 |
| CN1110674C (en) | 2003-06-04 |
| ITMI962739A1 (en) | 1998-06-24 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030604 Termination date: 20100129 |