CN100447508C - Condensation and evaporation integral defrosting system for air-cooled refrigerators - Google Patents
Condensation and evaporation integral defrosting system for air-cooled refrigerators Download PDFInfo
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- CN100447508C CN100447508C CNB2004100274440A CN200410027444A CN100447508C CN 100447508 C CN100447508 C CN 100447508C CN B2004100274440 A CNB2004100274440 A CN B2004100274440A CN 200410027444 A CN200410027444 A CN 200410027444A CN 100447508 C CN100447508 C CN 100447508C
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- temperature refrigerant
- high temperature
- evaporator
- refrigeration cycle
- fairlead
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- 238000009833 condensation Methods 0.000 title claims abstract description 10
- 230000005494 condensation Effects 0.000 title claims abstract description 10
- 238000001704 evaporation Methods 0.000 title claims abstract description 10
- 230000008020 evaporation Effects 0.000 title claims abstract description 10
- 238000010257 thawing Methods 0.000 title abstract description 23
- 239000003507 refrigerant Substances 0.000 claims abstract description 47
- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- 238000010992 reflux Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The present invention relates to a condensation and evaporation integral defrosting system for an air-cooled refrigerator, which comprises a refrigeration cycle loop composed of a compressor, a condenser, a dry filter, a two-position three-way valve, a main capillary, an auxiliary capillary, a refrigerating evaporator, a cold storage evaporator and a reservoir, and an electric control device. A high-temperature refrigerant outlet pipe is connected in parallel in the rear of the compressor to the front of the refrigerating evaporator of the refrigeration cycle loop. An upstream end outlet of the high-temperature refrigerant outlet pipe is connected with the refrigeration cycle loop by the two-position three-way pipe. A high-temperature refrigerant reflux pipe is connected in parallel in the rear of the compressor to the rear of the refrigerating evaporator. The downstream end of the high-temperature refrigerant reflux pipe is connected with the refrigeration cycle loop by the two-position three-way pipe. Due to the fact that the condenser of the refrigerator transfers the heat to be exhausted to the environment to the evaporator requiring defrosting to be used for melting the frost of the evaporator, the present invention can save the defrosting electricity, and the total energy consumption of the refrigerator can be decreases about 4%. Moreover, an electrothermal defrosting element is not needed, and therefore, the cost is saved.
Description
Technical field
The present invention relates to the defrost system of refrigerator, be specifically related to the condensation evaporation integral type defrost system of two/multi-evaporator wind cooling refrigerator.
Technical background
The defrosting problem of wind cooling refrigerator is the technical barrier that China refrigerator producer faces always, the defrosting power consumption accounts for about 8% of refrigerator total energy consumption, for power saving and defrosting effect are taken into account, scholar and researcher have developed various Defrost methods and control strategy, and wherein the selection of heating element heater is one of most important aspect wherein.Aspect the selection of heating element heater, the main at present defrosting heating tube that adopts, utilize the outside to provide electric energy to produce heat, heating tube mainly contains infrared radiation heating pipe, resistance-type contact heating tube or the like, and these elements are consume electric power all, and this part electric energy becomes the thermic load that heat energy becomes refrigerator inside simultaneously, must this part thermic load be discharged consume electric power, this increase to energy consumption of refrigerator is dual, therefore considers that from the angle of refrigerator energy-saving the change of present this heating element heater is necessary.
Summary of the invention
The objective of the invention is provides a kind of cost of saving electrical heating defrosting element at the big defective of prior art defrosting power consumption, reduces the condensation evaporation integral type defrost system of the wind cooling refrigerator of defrosting energy consumption.
Purpose of the present invention can be achieved by following technical proposals.
The present invention includes by compressor, condenser, device for drying and filtering, two-position three-way valve, main capillary, assisted capillary, refrigerating evaporator, refrigeration evaporator, refrigeration cycle and electric control gear that reservoir is formed, to refrigerating evaporator, be parallel with the high temperature refrigerant fairlead behind the refrigeration cycle compressor, the upstream extremity outlet of high temperature refrigerant fairlead is connected with refrigeration cycle by the two-bit triplet pipe, to refrigerating evaporator, be parallel with the high temperature refrigerant return duct behind the compressor, high temperature refrigerant return duct downstream is connected with refrigeration cycle by the two-bit triplet pipe, and the upstream extremity refluxing opening of high temperature refrigerant return duct is positioned at the upstream extremity outlet downstream of high temperature refrigerant fairlead.
The downstream of high temperature refrigerant fairlead directly is communicated with refrigeration cycle in the technique scheme, and high temperature refrigerant return duct upstream extremity refluxing opening directly is communicated with refrigeration cycle.
The upstream extremity outlet of high temperature refrigerant return duct upstream extremity refluxing opening next-door neighbour high temperature refrigerant fairlead is provided with.
The present invention when needing defrosting, is switched by pipeline in use, with condenser and the evaporator series that needs defrosting, high temperature refrigerant is introduced evaporimeter, and at this moment evaporimeter becomes an additional condenser, and liberated heat is used for defrosting.Evaporimeter itself is as the defrosting element, and heat-transfer effect is good, does not need to add the defrosting element in addition, has advantage more efficient, that save cost; For example refrigerating chamber is adopted air-cooled and direct-cooled refrigerator direct-cooled, that the refrigerating chamber employing is air-cooled, frosting occurs in freezer evaporator, when freezer evaporator is stopped transport and during the refrigerator evaporator operation, the condenser high temperature refrigerant is introduced freezer evaporator defrosting element, guarantee the normal operation of refrigerator, and realized the defrosting purpose; Refrigerating chamber and refrigerating chamber are all adopted air-cooled refrigerator, adopting refrigerating chamber and refrigerating chamber to replace defrosting mode carries out: utilize refrigerating chamber to stop transport and defrost for refrigerator evaporator during the refrigerating chamber refrigeration, utilize refrigerating chamber to stop transport and refrigerating chamber defrosts for freezer evaporator when freezing.
The present invention compared with prior art, because condenser for refrigerator will discharge to the transfer of heat of environment and give the evaporimeter that needs defrost, be used for melting the frost of evaporimeter, therefore can save the defrosting electricity consumption, can make the refrigerator total energy consumption reduce about 4%, and need not special electric defrosting element, save cost.
Description of drawings
Fig. 1 is the structural representation (omitting electric control gear among the figure) of the embodiment of the invention one;
Fig. 2 is the structural representation (omitting electric control gear among the figure) of the embodiment of the invention two.
Among the figure: compressor 1, condenser 2, device for drying and filtering 3, two-position three- way valve 4,10,11, main capillary 5, assisted capillary 6, refrigerating evaporator 7, refrigeration evaporator 8, reservoir 9, high temperature refrigerant fairlead 12, high temperature refrigerant return duct 13, fairlead downstream tube 14, return duct downstream tube 15.
The specific embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present invention is described further.
Embodiment one:
As shown in Figure 1, present embodiment comprises by compressor 1, condenser 2, device for drying and filtering 3, two-position three-way valve 4, main capillary 5, assisted capillary 6, refrigerating evaporator 7, refrigeration evaporator 8, refrigeration cycle and electric control gear that reservoir 9 is formed, this is the refrigeration system of typical discrete pair of cycle refrigerator, the evaporimeter that wherein needs to defrost is a refrigerating evaporator 7, to refrigerating evaporator 7, be parallel with high temperature refrigerant fairlead 12 in refrigeration cycle compressor 1 back, specifically, the upstream extremity outlet of high temperature refrigerant fairlead 12 is connected between compressor 1 and the condenser 2 by two-bit triplet pipe 10, and the downstream of high temperature refrigerant fairlead 12 directly is connected between main capillary 5 and the refrigerating evaporator 7; To refrigerating evaporator 7, be parallel with high temperature refrigerant return duct 13 in compressor 1 back, specifically, high temperature refrigerant return duct 13 downstream are connected the downstream of refrigerating evaporator 7 by two-bit triplet pipe 11, the upstream extremity outlet of high temperature refrigerant return duct 13 upstream extremity refluxing openings next-door neighbour high temperature refrigerant fairlead 12 directly is communicated with refrigeration cycle, and refluxing opening is positioned at the outlet downstream.When refrigerator normally freezed, two-position three- way valve 10,11 cut off high temperature refrigerant fairlead 12, return duct 13, and cold-producing medium is flowed out by compressor 1 in order, flows through condenser 2, device for drying and filtering 3, two-position three-way valve 4, realized freezing and refrigeration.When refrigerating evaporator 7 needs defrosting, when the refrigerating chamber attemperating unit sends the refrigeration instruction simultaneously, compressor 1 starting, two-position three- way valve 10,11 is opened high temperature refrigerant fairlead 12, return duct 13, close fairlead downstream tube 14, return duct downstream tube 15 simultaneously, make compressor 1 outlet high temperature refrigerant flow through high temperature refrigerant fairlead 12, refrigerating evaporator 7, high temperature refrigerant return duct 13, condenser 2, device for drying and filtering 3, two-position three-way valve 4, assisted capillary 6, refrigeration evaporator 8, reservoir 9, compressor 1 sequentially, realize a kind of refrigeration cycle.Compressor 1 outlet high temperature refrigerant is emitted heat in refrigerating evaporator 7 defrost process, evaporator tube outside frost is melted, and tube refrigerant steam is condensed, and further is condensed after entering condenser 2 and lowers the temperature.
Embodiment two:
As shown in Figure 2, present embodiment is identical with embodiment one operation principle, structure is also the same substantially, just the upstream extremity outlet of high temperature refrigerant fairlead 12 is connected between condenser 2 and the device for drying and filtering 3 by two-bit triplet pipe 10, equally, the upstream extremity outlet of high temperature refrigerant return duct 13 upstream extremity refluxing openings next-door neighbour high temperature refrigerant fairlead 12 directly is communicated with refrigeration cycle, and refluxing opening is positioned at the outlet downstream.
The present invention can be widely used among the various pairs/multi-evaporator wind cooling refrigerator.
Claims (5)
1. the condensation evaporation integral type defrost system of a wind cooling refrigerator, comprise by compressor (1), condenser (2), device for drying and filtering (3), two-position three-way valve (4), main capillary (5), assisted capillary (6), refrigerating evaporator (7), refrigeration evaporator (8), refrigeration cycle and electric control gear that reservoir (9) is formed, it is characterized in that in refrigeration cycle compressor (1) back to the preceding high temperature refrigerant fairlead (12) that is parallel with of refrigerating evaporator (7), the upstream extremity outlet of high temperature refrigerant fairlead (12) is connected with refrigeration cycle by two-bit triplet pipe (10), to refrigerating evaporator (7), be parallel with high temperature refrigerant return duct (13) in compressor (1) back, high temperature refrigerant return duct (13) downstream is connected with refrigeration cycle by two-bit triplet pipe (11), and the upstream extremity refluxing opening of high temperature refrigerant return duct (13) is positioned at the upstream extremity outlet downstream of high temperature refrigerant fairlead (12).
2. the condensation evaporation integral type defrost system of wind cooling refrigerator according to claim 1 is characterized in that the upstream extremity outlet of described high temperature refrigerant fairlead (12) is connected between compressor (1) and the condenser (2) by two-bit triplet pipe (10).
3. the condensation evaporation integral type defrost system of wind cooling refrigerator according to claim 1 is characterized in that the upstream extremity outlet of described high temperature refrigerant fairlead (12) is connected between condenser (2) and the device for drying and filtering (3) by two-bit triplet pipe (10).
4. according to the condensation evaporation integral type defrost system of claim 2 or 3 described wind cooling refrigerators, it is characterized in that the downstream of described high temperature refrigerant fairlead (12) directly is connected between main capillary (5) and the refrigerating evaporator (7).
5. the condensation evaporation integral type defrost system of wind cooling refrigerator according to claim 4, the upstream extremity outlet that it is characterized in that described high temperature refrigerant return duct (13) upstream extremity refluxing opening next-door neighbour's high temperature refrigerant fairlead (12) is provided with, and the upstream extremity refluxing opening of warm refrigerant reflux tube (13) directly is communicated with refrigeration cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100274440A CN100447508C (en) | 2004-06-03 | 2004-06-03 | Condensation and evaporation integral defrosting system for air-cooled refrigerators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100274440A CN100447508C (en) | 2004-06-03 | 2004-06-03 | Condensation and evaporation integral defrosting system for air-cooled refrigerators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1704701A CN1704701A (en) | 2005-12-07 |
| CN100447508C true CN100447508C (en) | 2008-12-31 |
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| CNB2004100274440A Expired - Fee Related CN100447508C (en) | 2004-06-03 | 2004-06-03 | Condensation and evaporation integral defrosting system for air-cooled refrigerators |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017427B (en) * | 2013-01-10 | 2016-05-18 | 合肥美的电冰箱有限公司 | Refrigerator and refrigeration system thereof |
| CN105157322B (en) * | 2015-09-15 | 2017-06-16 | 合肥美菱股份有限公司 | A kind of frostless wind cooling refrigerator comprising defrost rule |
| CN110108068B (en) * | 2019-05-23 | 2024-05-10 | 百尔制冷(无锡)有限公司 | Hot gas defrosting system of parallel refrigerating system and defrosting method thereof |
| CN110455000A (en) * | 2019-07-24 | 2019-11-15 | 中南大学 | New Energy Saving and Noise Reduction Refrigeration Cycle System |
| CN112611154B (en) * | 2020-12-17 | 2021-10-08 | 西安交通大学 | A parallel dual-system refrigerator and defrosting control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032389A (en) * | 1985-08-22 | 1989-04-12 | 三菱电机株式会社 | air conditioner |
| CN2421595Y (en) * | 2000-04-26 | 2001-02-28 | 韩军 | Novel defrosting structure |
| CN2442203Y (en) * | 2000-10-10 | 2001-08-08 | 广东科龙电器股份有限公司 | Direct cooling refrigerator |
| WO2002018854A1 (en) * | 2000-09-01 | 2002-03-07 | Sinvent As | Method and arrangement for defrosting a vapor compression system |
| CN1380965A (en) * | 2000-05-30 | 2002-11-20 | Igc珀利克尔德系统公司 | Low temp. Refrigeration system |
| CN2543004Y (en) * | 2002-04-23 | 2003-04-02 | 广东科龙电器股份有限公司 | Direct-cooling refrigerator |
| US20040079095A1 (en) * | 2002-10-23 | 2004-04-29 | Kevin Bischel | Heat treat hot gas system |
| CN2704002Y (en) * | 2004-06-03 | 2005-06-08 | 广东科龙电器股份有限公司 | Condensation-vaporation integrated defrosting syste mof air-cooling refrigerator |
-
2004
- 2004-06-03 CN CNB2004100274440A patent/CN100447508C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032389A (en) * | 1985-08-22 | 1989-04-12 | 三菱电机株式会社 | air conditioner |
| CN2421595Y (en) * | 2000-04-26 | 2001-02-28 | 韩军 | Novel defrosting structure |
| CN1380965A (en) * | 2000-05-30 | 2002-11-20 | Igc珀利克尔德系统公司 | Low temp. Refrigeration system |
| WO2002018854A1 (en) * | 2000-09-01 | 2002-03-07 | Sinvent As | Method and arrangement for defrosting a vapor compression system |
| CN2442203Y (en) * | 2000-10-10 | 2001-08-08 | 广东科龙电器股份有限公司 | Direct cooling refrigerator |
| CN2543004Y (en) * | 2002-04-23 | 2003-04-02 | 广东科龙电器股份有限公司 | Direct-cooling refrigerator |
| US20040079095A1 (en) * | 2002-10-23 | 2004-04-29 | Kevin Bischel | Heat treat hot gas system |
| CN2704002Y (en) * | 2004-06-03 | 2005-06-08 | 广东科龙电器股份有限公司 | Condensation-vaporation integrated defrosting syste mof air-cooling refrigerator |
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| CN1704701A (en) | 2005-12-07 |
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Granted publication date: 20081231 Termination date: 20100603 |