CN2833458Y - Low-temperature electric refrigerator - Google Patents
Low-temperature electric refrigerator Download PDFInfo
- Publication number
- CN2833458Y CN2833458Y CNU2005200707786U CN200520070778U CN2833458Y CN 2833458 Y CN2833458 Y CN 2833458Y CN U2005200707786 U CNU2005200707786 U CN U2005200707786U CN 200520070778 U CN200520070778 U CN 200520070778U CN 2833458 Y CN2833458 Y CN 2833458Y
- Authority
- CN
- China
- Prior art keywords
- temperature
- low temperature
- refrigerator
- capillary
- refrigerator according
- 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.)
- Expired - Lifetime
Links
Images
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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model relates to a low-temperature refrigerator which is characterized in that the temperature valve of at least one chamber of chambers of the refrigerator is no more than-40DEG. C. When frozen, articles are iced up at the temperature of 0 DEG C, and the maximum temperature of the volume of ice crystal is-4DEG. C. When the articles are at the temperature of-4DEG. C, the intracellular ice crystal easily puncture a cell membrane to cause the loss of nutrition; thus, high freezing speed and food passing through the temperature of the ice crystal within the minimum time is an important fresh keeping means. The implementation of the utility model can effectively improve the fresh keeping degree of the stored articles.
Description
Technical field:
The utility model relates to refrigerator.
Background technology:
According to the regulation of national standard " family expenses refrigerating appliance household refrigerator-freezer " GB/T 8059.2-1995 and " the frostless refrigerating box of family expenses refrigerating appliance, frostless household refrigerator-freezer, frostless frozen food storage are thought and frostless food freezer " GB/T 8059.4-1993, the minimum temperature of chamber between the normal domestic use refrigerator is required to not being higher than-18 ℃.The room temperature degree is low inadequately, has limited the chilling rate of article and has stored effect.
Several cold-producing mediums (comprising R12, R134a, R600a etc.) that household electric refrigerator is now general are because be subjected to the restriction of cold-producing medium self thermodynamic properties, and refrigerator is difficult to reach-40 ℃ and low temperature more.
Summary of the invention:
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of low temperature refrigerator is provided, so that the chilling rate of article further improved, the temperature of freezing preservation has further and descends, thereby helps guaranteeing the quality and fresh-keeping.
The technical scheme that the utility model technical solution problem is adopted is:
Design feature of the present utility model is in the chamber, to have at least temperature value indoor between not to be higher than-40 ℃ between refrigerator.
Compared with the prior art, the beneficial effects of the utility model are embodied in: meat product freezes since 0 ℃ in refrigerating process, and about-4 ℃, it is maximum that intracellular ice crystal volume reaches, and intracellular ice crystal easily punctures cell membrane, causes nutrition leak.Therefore, accelerate chilling rate, making meat product pass the ice crystal temperature in the shortest time is fresh-keeping important means.The utility model is made breakthrough than prior art in that chamber between refrigerator is reached in the realization of low temperature more, and the article chilling rate is faster, storage temperature is lower thereby make, and effectively prolongs the holding time of institute's storing articles, improves fresh-keeping effect.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model multichannel evaporation structure schematic diagram.
Number in the figure: 1 capillary, 2 capillary inlet pipelines, 3 heat exchangers, 4 evaporimeters, 5 evaporator outlet pipelines, 6 compressors, 7 condensers, 8 filters, 9 magnetic valve groups, 10 magnetic valve group entrance pipes.
The specific embodiment:
In the present embodiment, between refrigerator, in the chamber, have at least a room temperature degree not to be higher than-40 ℃.
Referring to Fig. 1, in concrete the enforcement, in the refrigerator refrigeration system that includes compressor 6, condenser 7, filter 8, capillary 1 and evaporimeter 4, be positioned at the porch of capillary 1, the heat exchanger 3 that can reduce this position refrigerant temperature is set.Heat exchanger 3 is to be heat dump with evaporator outlet pipeline 5, is radiator with capillary inlet pipeline 2, forms heat exchange each other at it.
Referring to Fig. 2, according to existing version, in refrigeration system, should in the capillary inlet of each road evaporimeter pipeline 2, magnetic valve group 9 be set with multichannel evaporimeter, therefore, be to be radiator in heat exchanger 3 with magnetic valve group entrance pipe 10.
In the present embodiment, change the use mixed non-azeotropic refrigerant into by common unitary system cryogen, be made up of at least two kinds of unitary system cryogens, this mixed non-azeotropic refrigerant is specifically as follows G2010A.
In order to guarantee refrigeration, corresponding setting comprises that also the chamber insulation layer thickness is at least 100mm between low temperature, and the two storied gate strip of paper used for sealing is set.
In the present embodiment, reduce the temperature of cold-producing medium in refrigeration system, thereby the laggard refrigerant temperature of going into evaporimeter 4 of throttling is reduced to below-40 ℃ in throttling mechanism porch such as capillary 1 or magnetic valve groups 9 by heat exchanger 3 is set.Employed mix refrigerant is made up of at least two kinds of unitary system cryogens.
In addition, being provided with identical with existing routine is to adopt machinery control or Electronic Control; Adopt direct-cooled mode or air cooling way; Also can adopt air-cooled and direct-cooled structure combining form; Refrigeration system can comprise two circulations or three circulation or more a plurality of cooling cycle systems.
For the single cycle refrigerator, do not have the magnetic valve group in the refrigeration system, and have only a capillary (as shown in Figure 1); For many cycle refrigerator, according to loop number, there are one or more magnetic valves to constitute magnetic valve group 9, and one or many capillaries 1 of relative set.
The realization of low temperature refrigerator:
The characteristics of mixed non-azeotropic refrigerant are alternating temperature condensation and alternating temperature evaporation, and promptly temperature reduces gradually in condensation process, and temperature raises gradually in evaporation process, and the condensation temperature of unitary system cryogen and evaporating temperature are constant.In condensation process, the easier condensation of component that saturation temperature is higher, along with cold-producing medium flows in condenser, liquid fraction is more and more, and temperature is more and more lower.When arriving condenser ends, still there is the part cold-producing medium not to be condensed, wherein mainly be the lower component of saturation temperature.Cold-producing medium continues through the filter inflow heat exchanger, and the refrigerant cools of being come out from evaporimeter, temperature continue to descend, and finally are condensed into liquid state fully.Because its condensation temperature is lower, so through behind the capillary-compensated, its temperature can be reduced to below-40 ℃, enter the evaporator evaporation heat absorption, make at least one chamber of refrigerator be reduced to-40 ℃ or low temperature more.Along with cold-producing medium flows in evaporimeter, gas ratio is more and more, and temperature is more and more higher.When arriving the evaporation end, still there is the part cold-producing medium not to be evaporated, wherein mainly be the higher component of saturation temperature.Cold-producing medium continues to flow into heat exchanger, flashes to gaseous state in heat exchanger fully, and the cold-producing medium that comes out from heat exchanger is inhaled into compressor, finishes a kind of refrigeration cycle.
Present embodiment is identical with existing household electric refrigerator in shape, and refrigerator cell structure form and temperature are directly implemented national standard " family expenses refrigerating appliance household refrigerator-freezer " GB/T 8059.2-1995 and " the frostless refrigerating box of family expenses refrigerating appliance, frostless household refrigerator-freezer, frostless frozen food hutch and frostless food freezer " GB/T 8059.4-1993.
Claims (6)
1, low temperature refrigerator is characterized in that in the chamber, having at least temperature value indoor between not to be higher than-40 ℃ between refrigerator.
2, low temperature refrigerator according to claim 1, it is characterized in that in the refrigerator refrigeration system that includes compressor (6), condenser (7), filter (8), capillary (1) and evaporimeter (4), the porch that is positioned at capillary (1) is provided with heat exchanger (3).
3, low temperature refrigerator according to claim 2 is characterized in that adopting mixed non-azeotropic refrigerant, and described heat exchanger (3) is a heat dump with evaporator outlet pipeline (5), is radiator with capillary inlet pipeline (2).
4, low temperature refrigerator according to claim 3 is characterized in that described mixed non-azeotropic refrigerant is made up of at least two kinds of unitary system cryogens.
5, low temperature refrigerator according to claim 4 is characterized in that described mixed non-azeotropic refrigerant is G2010A.
6, low temperature refrigerator according to claim 1 is characterized in that not being higher than between-40 ℃ low temperature in the chamber at described temperature value, and the thickness of its cabinet insulation layer is at least 100mm, and the two storied gate strip of paper used for sealing is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200707786U CN2833458Y (en) | 2005-04-12 | 2005-04-12 | Low-temperature electric refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200707786U CN2833458Y (en) | 2005-04-12 | 2005-04-12 | Low-temperature electric refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2833458Y true CN2833458Y (en) | 2006-11-01 |
Family
ID=37197770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200707786U Expired - Lifetime CN2833458Y (en) | 2005-04-12 | 2005-04-12 | Low-temperature electric refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2833458Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104823010B (en) * | 2012-12-05 | 2017-03-22 | 松下知识产权经营株式会社 | Refrigerator |
-
2005
- 2005-04-12 CN CNU2005200707786U patent/CN2833458Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104823010B (en) * | 2012-12-05 | 2017-03-22 | 松下知识产权经营株式会社 | Refrigerator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104677011B (en) | Refrigerator | |
| CN104764266B (en) | Three-door multi-temperature-zone refrigeration system with rapid-freezing function and refrigerator with same and control method thereof | |
| CN104121747A (en) | Refrigerating system and refrigerator provided with same | |
| CN204555490U (en) | Refrigerator | |
| CN202630556U (en) | Fridge with function of quick cooling | |
| CN209623140U (en) | Refrigerating plant and refrigeration equipment | |
| CN201407868Y (en) | Three-door low-temperature refrigerator with temperature-variable compartment | |
| CN102401533B (en) | Three-door direct cooling mechanical refrigerator and refrigeration system thereof | |
| CN2833458Y (en) | Low-temperature electric refrigerator | |
| CN209197195U (en) | A kind of small frozen refrigeration unit with twin-stage supercooling and gas pulses defrosting function | |
| CN1847759A (en) | Low temperature refrigerator | |
| CN109780776B (en) | Refrigerator and control method thereof | |
| CN109520163B (en) | Wide-temperature-zone small-sized refrigerating and refrigerating unit with rapid pulse defrosting function | |
| CN2833461Y (en) | Energy-saving refrigerator with rapid ice-making function | |
| CN206593361U (en) | A kind of vehicle-mounted energy-saving refrigerator | |
| CN115789981A (en) | Refrigerator and control method thereof | |
| CN215892862U (en) | Refrigerating system for refrigerating and freezing device and refrigerating and freezing device | |
| CN114739026A (en) | Mixed refrigerant refrigerating system for display cabinet | |
| CN210718233U (en) | Refrigeration, precooling and unfreezing system pipeline of ice cream machine | |
| CN202126111U (en) | Display cabinet refrigerating-defrosting system | |
| CN202303719U (en) | Supercooled water type direct-current frequency-conversion ice-storage multi-connected air-conditioner | |
| CN105466110B (en) | Wind cooling refrigerator and its air-supply structure | |
| CN204329385U (en) | Refrigeration system and the refrigerator with this refrigeration system | |
| CN204329386U (en) | Refrigeration system and the refrigerator with this refrigeration system | |
| CN102401534B (en) | Three-door direct cooling mechanical refrigerator and refrigeration system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150412 Granted publication date: 20061101 |