CN201407868Y - Three-door low-temperature refrigerator with temperature-variable compartment - Google Patents
Three-door low-temperature refrigerator with temperature-variable compartment Download PDFInfo
- Publication number
- CN201407868Y CN201407868Y CN2009201720292U CN200920172029U CN201407868Y CN 201407868 Y CN201407868 Y CN 201407868Y CN 2009201720292 U CN2009201720292 U CN 2009201720292U CN 200920172029 U CN200920172029 U CN 200920172029U CN 201407868 Y CN201407868 Y CN 201407868Y
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- China
- Prior art keywords
- temperature
- evaporator
- refrigerating
- changing chamber
- compartment
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- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A three-door low-temperature refrigerator with a temperature-variable compartment is characterized in that the refrigerator has a three doors, and includes a temperature-variable compartment, a refrigerating compartment and a freezing compartment; a circulation fan is arranged in the temperature-variable chamber; the refrigerating system has a three circulation design; an evaporator in the refrigerating compartment and an evaporator in the freezing compartment are serially connected and then connected with an evaporator in the temperature-variable compartment in parallel; branch capillary pipes are respectively arranged in each evaporator branch; refrigerant distributed by a solenoid valve flows to three paths: the temperature-variable evaporator branch, the branch serially connected withthe refrigerating evaporator and the freezing evaporator and the freezing evaporator branch. The three-door low-temperature refrigerator can reduce the temperature of the temperature-variable compartment to reduce the temperature of meat foods to be lower than that of the ice crystal formation zone, thereby reducing damage to the cell membrane, reducing nutrient loss, greatly prolonging the fresh-keeping period and significantly improving the fresh-keeping effect.
Description
Technical field
The utility model relates to refrigerator, a kind of three-door refrigerator of more specifically saying so.
Background technology
According to the regulation of national standard " family expenses refrigerating appliance household refrigerator-freezer " GB/T8059.2-1995 and " the frostless refrigerating box of family expenses refrigerating appliance, frostless household refrigerator-freezer, frostless frozen food hutch and frostless food freezer " GB/T8059.4-1993, require to not being higher than-18 ℃ for three-star and four-star chamber minimum temperature of normal domestic use refrigerator.The room temperature degree is low inadequately, has limited the chilling rate and the fresh-keeping effect of food.
Household electric refrigerator is general several cold-producing mediums now, comprise R12, R134a and R600a, because be subjected to the restriction of cold-producing medium self thermodynamic properties, refrigerator is difficult to reach-40 ℃ and lower temperature.
The utility model content
The utility model is for fear of above-mentioned existing in prior technology weak point, a kind of three low temperature refrigerators that have temperature-changing chamber are provided, wherein, temperature-changing chamber can reach-40 ℃ even lower temperature, so that the chilling rate of food is further improved, food can generate band by ice crystal faster, thereby helps guaranteeing the quality with fresh-keeping.
The technical scheme that the utility model technical solution problem is adopted is:
The design feature that the utility model has three low temperature refrigerators of temperature-changing chamber is:
Adopt three settings, have temperature-changing chamber, refrigerating chamber and refrigerating chamber, circulating fan is set in temperature-changing chamber;
Refrigeration system adopts three circulations to be provided with, it is in parallel after refrigerator evaporator is connected with freezer evaporator with the temperature-changing chamber evaporimeter, be respectively arranged with the branch road capillary in each evaporimeter branch road, the refrigerant flow direction that is distributed by magnetic valve has three the tunnel, one the tunnel is the alternating temperature evaporimeter branch road that is made of alternating temperature capillary and temperature-changing chamber evaporimeter, another road is series connection refrigeration evaporator and the refrigerating evaporator branch road that is made of refrigeration capillary, refrigerator evaporator and freezer evaporator, and one the tunnel is the refrigerating evaporator branch road that is made of freezing capillary and freezer evaporator again.
Design feature of the present utility model also is to adopt in the described refrigeration system mix refrigerant of non-azeotropic refrigerant or near-azeotrope refrigerant.
When the refrigerator refrigerating operaton, cold-producing medium through condenser condenses enters magnetic valve, when temperature-changing chamber needs low temperature, magnetic valve is dispensed to alternating temperature evaporimeter branch road with cold-producing medium, the temperature-changing chamber evaporimeter begins refrigeration, refrigerator evaporator and freezer evaporator all stop refrigeration, and circulating fan is opened in the temperature-changing chamber simultaneously, and the temperature-changing chamber temperature reduces rapidly.For guaranteeing that the temperature-changing chamber temperature can reach-40 ℃ and lower temperature, the utility model changes the use mix refrigerant into by common unitary system cryogen, adopt the mix refrigerant of non-azeotropic refrigerant or near-azeotrope refrigerant, depress at a normal atmosphere, the saturated evaporating temperature of cold-producing medium is less than-40 ℃.Usually the temperature-changing chamber internal volume is arranged on the 30-80 liter, and a chamber load is little, therefore can reach-40 ℃ and lower temperature easily.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
Because meat product is in refrigerating process, cell liquid can be formed ice crystal, and the speed that generates band by ice crystal is slow more, and the volume of forming ice crystal is big more, can puncture cell membrane, causes nutrient loss when thawing, and flows out watery blood when showing as frozen meat defreezing.The utility model reduces the temperature of temperature-changing chamber, makes meat product generate the band temperature by ice crystal rapidly, reduces puncturing of cell membrane, reduces the loss of nutrition, and the freshness date that can greatly help prolonging food is significantly improved fresh-keeping effect.
Description of drawings
Fig. 1 is the utility model profile schematic diagram.
Fig. 2 is the utility model refrigerant system configurations schematic diagram.
Fig. 3 is the utility model heat exchange interchanger schematic cross-section.
Number in the figure: 1 alternating temperature capillary, 2 temperature-changing chamber evaporimeters, 3 refrigeration capillaries, 4 refrigerator evaporators, 5 freezing capillaries, 6 freezer evaporators, 7 reservoirs, 8 compressors, 9 condensers, 10 filters, 11 magnetic valves, 12 connecting lines, 13 soldering-tin layers, 1b refrigerating chamber, 1a temperature-changing chamber, 1c refrigerating chamber.
Below pass through the specific embodiment, and in conjunction with the accompanying drawings the utility model is further described.
The specific embodiment
Referring to Fig. 1, present embodiment adopts three settings, has temperature-changing chamber 1a, refrigerating chamber 1b and refrigerating chamber 1c, is provided with circulating fan in temperature-changing chamber 1a;
Referring to Fig. 2, in the present embodiment, refrigeration system adopts three circulations to be provided with, it is in parallel after refrigerator evaporator 4 is connected with freezer evaporator 6 with temperature-changing chamber evaporimeter 2, be respectively arranged with the branch road capillary in each evaporimeter branch road, the refrigerant flow direction that is distributed by magnetic valve 11 has three the tunnel, one the tunnel is the alternating temperature evaporimeter branch road that is made of alternating temperature capillary 1 and temperature-changing chamber evaporimeter 2, another road is by refrigeration capillary 3, series connection refrigeration evaporator and refrigerating evaporator branch road that refrigerator evaporator 4 and freezer evaporator 6 constitute, the one tunnel is the refrigerating evaporator branch road that is made of freezing capillary 5 and freezer evaporator 6 again.
In concrete the enforcement, cooperate and adopt frostless refrigeration system setting.
This structure is provided with, and makes temperature-changing chamber, refrigerating chamber and refrigerating chamber can realize separate control, and control mode is:
When the refrigerator refrigerating operaton, enter magnetic valve 11 through condenser 9 condensed refrigerant, magnetic valve 11 is by being made up of two two-bit triplet electromagnetic valve bodies, the port opening by the programme-control magnetic valve or close; When temperature-changing chamber needs low temperature, the electromagnetic valve outlet that is communicated with alternating temperature capillary 1 is opened, the electromagnetic valve outlet that is communicated with refrigeration capillary 3 and freezing capillary 5 is closed, temperature-changing chamber evaporimeter 2 begins refrigeration, refrigerator evaporator 4 and freezer evaporator 6 all stop refrigeration, circulating fan is opened in the temperature-changing chamber simultaneously, and the temperature-changing chamber temperature reduces rapidly.
For guaranteeing that the temperature-changing chamber temperature can reach-40 ℃ and lower temperature, present embodiment changes the use mix refrigerant into by the unitary system cryogen, this cold-producing medium can adopt non-azeotropic refrigerant or near-azeotrope refrigerant, form by at least three kinds of unitary system cryogens, at least contain propane R290 working medium or iso-butane R600a working medium in the cold-producing medium constituent, depress at a normal atmosphere, the saturated evaporating temperature of cold-producing medium is less than-40 ℃.The code name of existing this type of cold-producing medium is on the market: SOHI-40-1 or SOHI-40-1a.
In addition, in order to guarantee refrigeration, the insulation layer thickness of temperature-changing chamber both sides is at least 80mm;
As shown in Figure 3, in the present embodiment, in refrigeration system, adopt the mode of tin and weldering to form heat conduction soldering-tin layer 13 between connecting line 12 between reservoir 7 and the compressor 8 and the alternating temperature capillary 1, and constitute the heat exchange switching fabric with this, thereby further reduce the outlet temperature of alternating temperature capillary 1, thereby make the laggard refrigerant temperature of going into the alternating temperature evaporimeter of throttling reach-40 ℃ and lower temperature.
The utility model is identical with existing refrigerator in shape, and refrigerating chamber and freezer compartment structure form and temperature are directly implemented the regulation of " family expenses refrigerating appliance household refrigerator-freezer " GB/T8059.2-1995 and " the frostless refrigerating box of family expenses refrigerating appliance, frostless household refrigerator-freezer, frostless frozen food hutch and frostless food freezer " GB/T8059.4-1993.
Claims (3)
1, have three low temperature refrigerators of temperature-changing chamber, it is characterized in that:
Adopt three settings, have temperature-changing chamber (1a), refrigerating chamber (1b) and refrigerating chamber (1c), in described temperature-changing chamber (1a), circulating fan is set;
Refrigeration system adopts three circulations to be provided with, it is in parallel after refrigerator evaporator (4) is connected with freezer evaporator (6) with temperature-changing chamber evaporimeter (2), be respectively arranged with the branch road capillary in each evaporimeter branch road, the refrigerant flow direction that is distributed by magnetic valve (11) has three the tunnel, one the tunnel is the alternating temperature evaporimeter branch road that is made of alternating temperature capillary (1) and temperature-changing chamber evaporimeter (2), another road is by refrigeration capillary (3), series connection refrigeration evaporator and refrigerating evaporator branch road that refrigerator evaporator (4) and freezer evaporator (6) constitute, the one tunnel is the refrigerating evaporator branch road that is made of freezing capillary (5) and freezer evaporator (6) again.
2, three low temperature refrigerators that have temperature-changing chamber according to claim 1, the connecting line (12) that it is characterized in that being provided with between reservoir in the refrigeration system (7) and the compressor (8) adopts the mode of tin and weldering to form heat conduction soldering-tin layer (13) with described alternating temperature capillary (1), and constitutes the heat exchange switching fabric with this.
3, three low temperature refrigerators that have temperature-changing chamber according to claim 1 is characterized in that in the described refrigeration system adopting the mix refrigerant of non-azeotropic refrigerant or near-azeotrope refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201720292U CN201407868Y (en) | 2009-05-13 | 2009-05-13 | Three-door low-temperature refrigerator with temperature-variable compartment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201720292U CN201407868Y (en) | 2009-05-13 | 2009-05-13 | Three-door low-temperature refrigerator with temperature-variable compartment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407868Y true CN201407868Y (en) | 2010-02-17 |
Family
ID=41678803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201720292U Expired - Lifetime CN201407868Y (en) | 2009-05-13 | 2009-05-13 | Three-door low-temperature refrigerator with temperature-variable compartment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407868Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613663A (en) * | 2015-02-03 | 2015-05-13 | 东南大学 | Multi-temperature refrigerator based on large-glide temperature non-azeotropic working medium |
| CN104676988A (en) * | 2015-02-28 | 2015-06-03 | 合肥晶弘电器有限公司 | Refrigerating system for refrigerator and control method thereof |
| CN106766537A (en) * | 2017-02-28 | 2017-05-31 | 海信（山东）冰箱有限公司 | A kind of three compartment refrigerators and its control method of defrost and moisturizing |
| CN110160309A (en) * | 2019-05-28 | 2019-08-23 | 长虹美菱股份有限公司 | A kind of refrigeration air duct for refrigerator system and its control method |
| CN111006430A (en) * | 2019-11-14 | 2020-04-14 | 西安优信机电工程有限公司 | Food is with fresh-keeping cold storage plant |
-
2009
- 2009-05-13 CN CN2009201720292U patent/CN201407868Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613663A (en) * | 2015-02-03 | 2015-05-13 | 东南大学 | Multi-temperature refrigerator based on large-glide temperature non-azeotropic working medium |
| CN104676988A (en) * | 2015-02-28 | 2015-06-03 | 合肥晶弘电器有限公司 | Refrigerating system for refrigerator and control method thereof |
| CN106766537A (en) * | 2017-02-28 | 2017-05-31 | 海信（山东）冰箱有限公司 | A kind of three compartment refrigerators and its control method of defrost and moisturizing |
| CN110160309A (en) * | 2019-05-28 | 2019-08-23 | 长虹美菱股份有限公司 | A kind of refrigeration air duct for refrigerator system and its control method |
| CN111006430A (en) * | 2019-11-14 | 2020-04-14 | 西安优信机电工程有限公司 | Food is with fresh-keeping cold storage plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |
|
| CX01 | Expiry of patent term |