CN2663885Y - An energy-saving refrigerator - Google Patents
An energy-saving refrigerator Download PDFInfo
- Publication number
- CN2663885Y CN2663885Y CN 200320117646 CN200320117646U CN2663885Y CN 2663885 Y CN2663885 Y CN 2663885Y CN 200320117646 CN200320117646 CN 200320117646 CN 200320117646 U CN200320117646 U CN 200320117646U CN 2663885 Y CN2663885 Y CN 2663885Y
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- Prior art keywords
- capillary
- compressing mechanism
- forecooler
- evaporimeter
- evaporator
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Abstract
The utility model discloses an energy-saving refrigerator, comprising a first capillary, a second capillary, a first evaporator and a second evaporator as well as a compressor with a high pressure degree and a low pressure degree compressing mechanisms and a middle pressure cooler between an air discharging hole arranged on the low pressure degree compressing mechanism and an inlet of the high pressure degree compressing mechanism; a high pressure refrigerant discharged from the high pressure degree compressing mechanism is shunted after depressurized from the first capillary through a condenser, one part of the refrigerant is flowed into the first evaporator while the other part of refrigerant is flowed into the second capillary and into the second evaporator after depressurization process, the gaseous state refrigerant from the second evaporator is flowed into the low pressure degree compressing mechanism, and is interflowed with the refrigerant from the first evaporator through the middle pressure cooler after compressing, and is flowed into the high pressure degree compressing mechanism. The utility model solves the problem of big compressing ratio in prior compressor of refrigerator, and adopts a double compressing process, and reduces the power consumption of the compressor, and can reasonably distribute the evaporating pressure and temperature of a refrigerating evaporator and a freezing evaporator, and largely improves the refrigerating efficiency of refrigerator; the utility model is widely used in different types of refrigerating freezer.
Description
Technical field
The utility model relates to a kind of refrigerator, more particularly relates to a kind of energy-saving electric refrigerator with two evaporimeters.
Background technology
For general refrigeration system of refrigerator, its condensation temperature or condensing pressure are decided by the environment temperature that refrigerator is placed, and evaporating temperature or evaporating pressure depend on the requirement of refrigeration system.Refrigerator major part on the market is a household refrigerator-freezer, and its refrigeration evaporator is consistent with the evaporating temperature of refrigerating evaporator, generally be about about-30 ℃, and condensation temperature is a room temperature.Therefore, in the practical application of a lot of refrigeration, the temperature difference of evaporative condenser, compressor pressure ratios are very big.The too big problem of bringing of compression ratio is a lot: the refrigeration system restriction loss is big, and coefficient of refrigerating performance is little; The compressor refrigerating effect per unit swept volume is little, volumetric efficiency is low; Compressor exhaust temperature is too high, causes the compressor lubrication oil viscosity to descend, and lubricant effect descends, and power consumption increases, the wearing and tearing aggravation, and the life-span reduces.
The utility model content
The technical problems to be solved in the utility model is, a kind of energy-saving electric refrigerator that reduces compressor pressure ratios is provided, and reduces system's restriction loss, the refrigerator refrigerating efficiency improved, to overcome the deficiencies in the prior art.
For solving the problems of the technologies described above, construct a kind of energy-saving electric refrigerator, comprise condenser, first capillary, second capillary, first evaporimeter, second evaporimeter, comprise that also one has the compressor of hiigh pressure stage and low-pressure stage compressing mechanism, be arranged at the middle pressure cooler between low-pressure stage compressing mechanism exhaust outlet and the import of hiigh pressure stage compressing mechanism; The high-pressure refrigerant of discharging from the hiigh pressure stage compressing mechanism is through condenser, and from first capillary decompression back shunting, part of refrigerant flows into first evaporimeter; Another part cold-producing medium enters second evaporimeter after flowing into the decompression of second capillary, the cold-producing medium that comes out from second evaporimeter enters the low-pressure stage compressing mechanism, described middle the pressure behind the cooler and from the cold-producing medium that first evaporimeter comes out of flowing through after compression collaborated, and enters the hiigh pressure stage compressing mechanism.
Above-mentioned energy-saving electric refrigerator, forecooler in the middle of described first outlet capillaceous connects, two leakage fluid drams are established in the bottom of described middle forecooler, are connected with second inlet capillaceous with first evaporator inlet respectively; The top of forecooler is provided with inlet and exhaust outlet in the middle of described, and inlet is connected with first evaporator outlet; The cold-producing medium that flows out from described first capillary enter described in the middle of forecooler and at middle forecooler bottom tapping, forecooler in the middle of the part cold-producing medium is flowed through behind first evaporimeter and to be got back to from the top inlet of middle forecooler, gaseous refrigerant is discharged from the exhaust outlet of middle forecooler, with described in enter the hiigh pressure stage compressing mechanism after pressing the cold-producing medium interflow of cooler.Between the condenser and first capillary, establish regenerator, the cold-producing medium that comes out from condenser flow into described regenerator and with the gaseous refrigerant heat exchange of discharging from middle forecooler.
The utility model compared with prior art owing to taked the twin-stage compression, reduces compressor pressure ratios, reduces the compressor power consumption; Utilize the intermediate pressure of twin-stage compression, in conjunction with refrigerator the characteristics of freezing and refrigeration are arranged, the evaporating pressure of reasonable distribution refrigeration evaporator and refrigerating evaporator and evaporating temperature reduce the heat transfer temperature difference of refrigeration evaporator, and the refrigerator refrigerating efficiency is improved greatly.
Description of drawings
Fig. 1 is a refrigerant system configurations schematic diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Referring to shown in Figure 1, compressor of the present utility model has hiigh pressure stage and low-pressure stage compressing mechanism, and compressor adopts totally-enclosed two row twin-tubs to dynamic formula or angle compressor, and high-pressure cylinder and low-pressure cylinder are set in the compressor housing 9.The feature of two row twin-tub balanced opposed type compressors is the move toward one another that two groups of movement parts that dynamic formula is listed as relatively are symmetrical in spindle centerline, and its dynamic equilibrium performance is good especially.Consider the complexity of bent axle processing, the single machine two-stage totally-enclosed compressor can be selected angled type such as V-type compressor for use, the shared bent axle of two row footpath.For reducing vibration and noise, the biserial angle can be chosen as 90 °.In order to reduce the compressor volume, angle also may be selected to be 180 °.Outside low pressure (LP) cylinder, on the low-pressure stage air inlet pipeline, establish second oil eliminator 1, second oil eliminator 1 plays the effect of gas-liquid separation, oil strain, and play the effect of buffer, prevent because the harm that the gas of piston compressor brings to compressor set, pressure fluctuation is limited in certain scope, guarantees the gas smooth flow.
Forecooler 2 and middle pressure cooler 7 in the middle of refrigerator of the present utility model is provided with one, two leakage fluid drams are established in the bottom of middle forecooler 2, are connected with the inlet of first evaporimeter 15 and the inlet of second capillary 14 respectively; The top is provided with inlet and exhaust outlet, and inlet is connected with 15 outlets of first evaporimeter.The gas that ejects from compressor high pressure cylinder 10 after condenser 6 is condensed into highly pressurised liquid, in regenerator 5 and the cryogenic gas heat exchange of coming out from middle forecooler 2, to reduce the loss of gas cold, again through 15 throttlings of first capillary to middle forecooler 2.In middle forecooler 2, the gas of throttling shwoot and the vaporized gas of absorbing heat from first evaporimeter 4 are discharged at the exhaust outlet of middle forecooler 2, enter first oil eliminator 13 behind regenerator 5, fluid drains into the compressor housing bottom, and gaseous refrigerant enters compressor high pressure cylinder 10.Liquid refrigerant in middle forecooler 2 is split into two branch roads from two leakage fluid drams of bottom, part of refrigerant liquid returns middle forecooler 2 after crossing 4 evaporations of first evaporimeter, another part refrigerant liquid is through the 3 heat absorption evaporations of second capillary, 14 to second evaporimeters, the cold-producing medium heat exchange of the boil-off gas and second capillary 14 and first capillary 15, backheat enters second oil eliminator 1 to environment temperature, enter compressor low pressure (LP) cylinder 11 again, press cooler 7 in after low pressure (LP) cylinder is compressed into medium pressure gas, entering, be cooled to gas at middle pressure cooler 7 a little more than environment temperature, enter first oil eliminator 13 behind the gas interflow that is evaporated with first evaporimeter 4, get back to compressor high pressure cylinder 10.When the oil of second oil eliminator 1 is shut down pressure balance under the gravity effect in check valve 8 flows back to compressor housing 9.Check valve 8 also can replace with magnetic valve.
The control system of refrigerator can be the temperature control of mechanical type list or the two temperature controls of computer.The high and low cylinder pressure of single temperature control system compressor is all put into operation.Refrigerator for two temperature controls, in the pipeline section between the middle forecooler 2 and first evaporimeter 4 control valve A (not marking in the accompanying drawing) is set, in the pipeline section between the middle forecooler 2 and second capillary 14 control valve B (not marking in the accompanying drawing) is set, when refrigerating chamber and refrigerating chamber all must freeze, the work done simultaneously of high and low cylinder pressure; When refrigerating chamber reaches temperature requirement, send instructions control valve A is closed, at this moment be in the twin-stage binodal and flow single refrigerating evaporator refrigerating state; When refrigerating chamber must refrigeration, and refrigerating chamber not be must freeze the time, and sending instructions opens control valve A, and control valve B closes, the work of compressor high pressure cylinder.
Claims (7)
1. energy-saving electric refrigerator, comprise condenser, first capillary, second capillary, first evaporimeter, second evaporimeter is characterized in that also comprising that one has the compressor of hiigh pressure stage and low-pressure stage compressing mechanism, is arranged at the middle pressure cooler between low-pressure stage compressing mechanism exhaust outlet and the import of hiigh pressure stage compressing mechanism; The high-pressure refrigerant of discharging from the hiigh pressure stage compressing mechanism is through condenser, and from first capillary decompression back shunting, part of refrigerant flows into first evaporimeter; Another part cold-producing medium enters second evaporimeter after flowing into the decompression of second capillary, the cold-producing medium that comes out from second evaporimeter enters the low-pressure stage compressing mechanism, described middle the pressure behind the cooler and from the cold-producing medium that first evaporimeter comes out of flowing through after compression collaborated, and enters the hiigh pressure stage compressing mechanism.
2. energy-saving electric refrigerator according to claim 1 is characterized in that forecooler in the middle of described first outlet capillaceous connects, and two leakage fluid drams are established in the bottom of described middle forecooler, are connected with second inlet capillaceous with first evaporator inlet respectively; The top of forecooler is provided with inlet and exhaust outlet in the middle of described, and inlet is connected with first evaporator outlet; The cold-producing medium that flows out from described first capillary enter described in the middle of forecooler and at middle forecooler bottom tapping, forecooler in the middle of the part cold-producing medium is flowed through behind first evaporimeter and to be got back to from the top inlet of middle forecooler, gaseous refrigerant is discharged from the exhaust outlet of middle forecooler, with described in enter the hiigh pressure stage compressing mechanism after pressing the cold-producing medium interflow of cooler.
3. energy-saving electric refrigerator according to claim 2 is characterized in that establishing regenerator between the condenser and first capillary, the cold-producing medium that comes out from condenser flow into described regenerator and with the gaseous refrigerant heat exchange of discharging from middle forecooler.
4. according to claim 1 or 2 or 3 described energy-saving electric refrigerators, it is characterized in that between described second evaporimeter and described low-pressure stage compressing mechanism second oil eliminator being set, the bottom in described second oil eliminator connects switch and is connected with the import of hiigh pressure stage compressing mechanism.
5. energy-saving electric refrigerator according to claim 4 is characterized in that described switch is check valve or magnetic valve.
6. energy-saving electric refrigerator according to claim 5, it is characterized in that the cold-producing medium that comes out from second evaporimeter and second capillary, the exchange of first capillary heat after, enter second oil eliminator.
7. according to claim 1 or 2 or 3 described energy-saving electric refrigerators, it is characterized in that described compressor is piston type full closed two row duplex cylinder compressors, is provided with high-pressure cylinder and low-pressure cylinder in the described compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117646 CN2663885Y (en) | 2003-10-31 | 2003-10-31 | An energy-saving refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117646 CN2663885Y (en) | 2003-10-31 | 2003-10-31 | An energy-saving refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2663885Y true CN2663885Y (en) | 2004-12-15 |
Family
ID=34346864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320117646 Expired - Fee Related CN2663885Y (en) | 2003-10-31 | 2003-10-31 | An energy-saving refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2663885Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061732A (en) * | 2013-03-22 | 2014-09-24 | Lg电子株式会社 | Refrigerator |
| CN110017637A (en) * | 2019-04-24 | 2019-07-16 | 浙江同星科技股份有限公司 | High performance heat exchanger with defrost mechanism |
-
2003
- 2003-10-31 CN CN 200320117646 patent/CN2663885Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061732A (en) * | 2013-03-22 | 2014-09-24 | Lg电子株式会社 | Refrigerator |
| CN110017637A (en) * | 2019-04-24 | 2019-07-16 | 浙江同星科技股份有限公司 | High performance heat exchanger with defrost mechanism |
| CN110017637B (en) * | 2019-04-24 | 2024-01-30 | 浙江同星科技股份有限公司 | High-performance heat exchanger with defrosting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041215 Termination date: 20091130 |