CN104075522A - Energy supply method for circulating fan of household carbon dioxide refrigerator - Google Patents
Energy supply method for circulating fan of household carbon dioxide refrigerator Download PDFInfo
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- CN104075522A CN104075522A CN201410327024.8A CN201410327024A CN104075522A CN 104075522 A CN104075522 A CN 104075522A CN 201410327024 A CN201410327024 A CN 201410327024A CN 104075522 A CN104075522 A CN 104075522A
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Abstract
The invention relates to an energy supply method for a circulating fan of a household carbon dioxide refrigerator. An expansion machine is adopted as a throttling device of the carbon dioxide air-cooling refrigerator. The expansion machine is coaxially connected with the circulating fan. In the refrigerating process, the expansion machine recovers throttling loss generated in the expansion process of a carbon dioxide refrigerant to provide energy for the circulating fan and circulate air in a storage house. The energy supply method has the advantages that the natural environment-friendly working medium carbon dioxide is adopted as the refrigerant of a refrigerating system, so the ozone layer can not be damaged, or global warning can not be caused; since the expansion machine is adopted as the throttling device to recover the energy supplied to the circulating fan, extra electric energy input of the refrigerator can be lowered, the energy efficiency ratio of the whole system can be increased, and popularization and application of the environment-friendly carbon dioxide refrigerant in the refrigerator are facilitated.
Description
Technical field
The present invention relates to a kind of energy supply method of carbon dioxide household electric refrigerator circulating fan, belong to cold-producing medium expansion work and reclaim for refrigerator air fluid forced circulation technical field.
Background technology
Refrigerator and air conditioner industry, is never interrupted about the broad research of perchloro-fluorohydrocarbon and hydrochlorofluorocarsolvent substitute.Although new Substitute Working Medium has started to commercially produce at present, it is found that new Substitute Working Medium can not meet the requirement of " for a long time " substitute, most of new working medium has higher greenhouse effects index or other defect.Therefore, the application of natural medium has caused people's attention, particularly the utilization to carbon dioxide.The front chairman of International Institute or Refrigeration just once advocated energetically and used natural refrigerant, in the research and extension application to carbon dioxide, had played good leading role.From then on the research of carbon dioxide refrigeration device becomes again valued focus in the world with application;
According to the study, carbon dioxide has high density and low viscosity, and its flow losses are little, heat-transfer effect is good, and by the strengthening to heat transfer effect, can make up the not high shortcoming of its circulation.Simultaneously carbon dioxide environment performance is good, expense is lowly easy to obtain, good stability, be conducive to reduce device volume.The most important thing is, its safety non-toxic, non-combustible, this point has obvious advantage than R290;
Adopt across critical cycle using carbon dioxide as cold-producing medium, be generally used for large-scale refrigerating plant occasion, due to hiigh pressure stage pressure higher (about 10MPa), pressure reduction before and after throttling is large (about 6MPa), in throttling process, there is larger energy loss, thereby current carbon freezing air-conditioning system, the decompressors that adopt reclaim restriction loss to improve cycle efficieny more, its the existing known technology normally compressor in refrigeration system carries out energy recovery with coaxial connection of decompressor, because compressor does not mate with the output work of decompressor, the problem causing is exactly to need extra electric work compressor to be carried out to the input of power, or in refrigeration system, adopt an auxiliary compressor to reclaim expansion work, set up another main compressor as the cold-producing medium power that mainly boosts, what bring thus is that problem is the complexity of system or the difficulty of start-up course.
Summary of the invention
In order to address the aforementioned drawbacks, the present invention adopts following technical scheme: a kind of energy supply method of circulating fan of carbon dioxide household electric refrigerator, carbon dioxide household electric refrigerator comprises cooling cycle system and storeroom, the throttling arrangement of cooling cycle system adopts decompressor, and decompressor is connected with circulating fan is coaxial; In refrigerating operaton process, the restriction loss merit of the conventional carbon dioxide refrigeration circulatory system that adopts capillary or expansion valve, exports to circulating fan after reclaiming its energy, for the airflow circulating in storeroom by decompressor;
The technique effect that the present invention is useful: refrigerator adopts natural environmental-protective working medium carbon dioxide as cold-producing medium, can not damage or cause global warming ozone layer, the energy that throttling arrangement adopts decompressor to reclaim expansion work is used for driving circulating fan, the Power supply of circulating fan can reduce without extra electric energy input, can improve the Energy Efficiency Ratio of whole system; Recovery method is simple and reliable, is easy to carbon dioxide environmental protection refrigerant applying in wind cooling refrigerator system.
Brief description of the drawings
The carbon dioxide household electric refrigerator section structure schematic diagram of Fig. 1 embodiment of the present invention one;
The energy supply method schematic diagram of the circulating fan of the carbon dioxide household electric refrigerator of Fig. 2 embodiment of the present invention one;
The energy supply method schematic diagram of the circulating fan of the carbon dioxide household electric refrigerator of Fig. 3 embodiment of the present invention two;
The kind of refrigeration cycle schematic diagram of the carbon dioxide household electric refrigerator of Fig. 4 embodiment of the present invention three;
Description of reference numerals: decompressor 1, blower fan 2, evaporimeter 3, air channel 4, compressor 5, cooler 6, device for drying and filtering 7, direct current generator 8, the first switching circuit 9, power storage module 10, storeroom 11, the second switching circuit 12, electric expansion valve 13.
Detailed description of the invention
Below by specific embodiment, technical scheme of the present invention and useful technique effect are described in detail, but these exemplary embodiments are only for exemplifying, and not real protection scope of the present invention are formed to any type of any restriction;
embodiment 1
Figure 1 shows that carbon dioxide household electric refrigerator section structure schematic diagram of the present invention, comprise cooling cycle system and storeroom 11, the energy supply method of its circulating fan 2, is described as follows in conjunction with Fig. 2:
The cooling cycle system that compressor 5, cooler 6, decompressor 1, device for drying and filtering 7, the evaporimeter 3 being connected successively by refrigerating circulation forms.Decompressor 1 is connected with circulating fan 2 is coaxial, is fixed in the air channel 4 of carbon dioxide household electric refrigerator.In process of refrigerastion, the high-pressure carbon dioxide gas that cooler 6 is discharged is after decompressor 1 expansion decompression, become the two-phase state of low-temp low-pressure, in evaporimeter 3, absorb after heat, through the air-breathing high-pressure gaseous that is collapsed into of compressor 5, enter into cooler 6 carry out cooling after, again enter into decompressor 1 and carry out expansion decompression, so far form a cooling cycle system completing.In the process of high-pressure carbon dioxide gas expansion decompression in decompressor 1, its expansion work is exported to the circulating fan 6 of coaxial connection, circulates for the air fluid in storeroom 11;
Draw by calculating and test evidence analysis, circulating fan 2 adopts the supply method of decompressor as energy, the outlet temperature of cooler 6 is controlled at 30 DEG C to 35 DEG C scopes by refrigerator for common 100W, evaporating temperature is-15 DEG C to-5 DEG C scopes, suction superheat is 10 DEG C, its decompressor is exported to the merit of circulating fan through measuring, between 14 to 22W.The Energy Efficiency Ratio of whole system adopts capillary with respect to throttling arrangement, and circulating fan relies on the cooling cycle system of electric energy input to improve 10%-20%;
Passable by the above-mentioned course of work, obtain useful technique effect of the present invention and be:
The expenditure and pressure device of carbon dioxide household electric refrigerator, do not adopt expansion valve or capillary, but employing decompressor, by decompressor, high-pressure carbon dioxide gas is carried out to expansion decompression, can reclaim conventional expansion valve or the capillary of adopting as the lost work in the carbon dioxide household electric refrigerator cooling cycle system throttling process of throttling arrangement, for the Power supply of circulating fan, be used for the circulating cold air in storeroom, compared with the method that adopts electric energy supply energy with circulating fan in prior art, no longer need extra electric work input, thereby be conducive to reduce the electric energy input of whole refrigerator system, improve the efficiency of system,
With in prior art, compare by setting up a method of carrying out energy recovery with the coaxial auxiliary compressor being connected of decompressor, cooling cycle system also has simple and practical startup feature rapidly, this is because prior art is carried out energy recovery method by the auxiliary compressor of the coaxial connection of decompressor, after its auxiliary compressor needs decompressor first to start conventionally, the passive startup of self ability, and the starting load of auxiliary compressor is than large many of circulating fan starting load, thereby start slower and difficult;
Further: decompressor 1 can be rolling-piston-type, vortex, slide sheet type;
Further: described circulating fan 2 is preferably axial flow blower;
embodiment 2
For the energy supply method of the circulating fan in embodiment 1, and the electric circulation blower fan that the storeroom of common above-mentioned specification refrigerator uses is only in 10W left and right, the result of bringing is thus exactly, the output work of decompressor is all supplied to circulating fan, air quantity is larger, causes the start and stop of carbon dioxide household electric refrigerator slightly to dislike some frequent;
Thereby the technical scheme of embodiment 1 is is further improved and optimizated, describe below in conjunction with accompanying drawing 3;
The part identical with embodiment 1 repeats no more, it further improves difference, be that decompressor 1 and circulating fan 2 also have the direct current generator 8 of coaxial connection between coaxial, direct current generator 8 can start by additional power source (Fig. 3 is not shown), to be conducive to the quick startup of cooling cycle system; Direct current generator 8 also comprises and its power storage module 10 being connected by the first switching circuit 9, first open and close circuit 9 in the time that cooling cycle system starts in off-state, in the time that normally moving, cooling cycle system in closure state, by direct current generator 8, power storage module 10 is carried out to electric power storage with the expansion work that is conducive to decompressor 1; Power storage module 10 opens and closes circuit 12 by second and is connected with the lighting device (Fig. 3 is not shown) in storeroom 11, need to throw light on time, powers for illumination apparatus; Power storage module 10 can be by the first switching circuit 9 startup power supplys as direct motor 8, to be conducive to the quick startup of described cooling cycle system;
The present invention who is brought by above-mentioned technology contents further overall useful technique effect is:
Direct current generator 8 can start by additional power source, is conducive in refrigeration system initial launch process, overcomes fast the negative energy that frictional resistance, mechanism's loss etc. in decompressor 1 hinder refrigeration system to start, and makes fast cooling cycle system move; After the normal operation of cooling cycle system, an output work part for decompressor 8 is used for driving circulating fan 2, another part is converted into electric energy and is exported to power storage module 10 by direct current generator 8, the first switching circuit 9, even if the part expansion work that circulating fan 2 can obtain is as described in Example 1 for electric power storage, can reduce thus the air quantity of circulating fan 2, extend the working time of cooling cycle system, reduce unnecessary shutdown more frequently; Another reverse side, the electric energy that battery module 10 is stored, can open and close circuit 12 illumination apparatus power supplies for instead of external power supply by second conversely; Or direct current generator 8 is powered by the first switching circuit 9 for again starting cooling cycle system process, thereby be conducive to the quick startup of cooling cycle system;
embodiment 3
The invention provides a kind of secondary decompression carbon dioxide household electric refrigerator, the difference of the cooling cycle system shown in the cooling cycle system of this refrigerator and embodiment mono-Fig. 2 is, as shown in Figure 4: cooling cycle system adopts two-stage expenditure and pressure device, one-level expenditure and pressure device adopts decompressor 1, two-step throttle decompressor to adopt electric expansion valve 13, can divide cold-producing medium that two stages the export cooler 6 required evaporating pressure that reduces pressure;
Useful technique effect compared with the present invention adopts merely an expansion decompression of decompressor with carbon dioxide refrigerating system in prior art thus refrigerator or refrigerating plant is:
One-level expenditure and pressure device decompressor 1 recovery section expansion work circulates to the cold air in storeroom 11 for circulating fan 2, two-step throttle decompressor electric expansion valve 13 can be according to the size of refrigerating capacity, and the variation of operating mode, carry out the adjusting of aperture size, jointly coordinate with one-level expenditure and pressure device decompressor 1, thereby can make the refrigeration system of carbon dioxide household electric refrigerator can meet the optimum performance under wide working condition running state, overcome the technical problem that carbon dioxide refrigerating system adopts poor the caused systematic function of single expenditure and pressure device decompression adjusting function to decline in the time of transcritical operation and subcritical operation, popular says, useful technique effect of the present invention: recyclable a part of expansion work is for the power supply to circulating fan 2, thereby reduce the input of electric energy, suitable air quantity is provided, the efficiency of raising system, on the other hand, two-stage expenditure and pressure device is used in conjunction with each other, effect has been equivalent to provide the capillary pipe structure that can make according to cooling condition variation adaptations length, thereby the performance of refrigeration system is further optimized, equally due to recovery section expansion work, be specially adapted to critical-cross carbon dioxide circulation, the present invention is also of value to the technique effect that reduces refrigeration system frequent starting, with reference to the explanation of embodiment bis-, do not repeating,
This embodiment can also further improve, can be parallel with a bypass branch road with magnetic valve (not shown in Fig. 4) in the import of electric expansion valve 13 (being also the exit of decompressor 1) and outlet (being the import of device for drying and filtering), in subcritical carbon dioxide cyclic process, by electric expansion valve 13 bypass, only adopt a decompressor to carry out expansion decompression, the benefit of doing is like this, can reclaim cooling for to storeroom of whole expansion works, improves refrigerating capacity and realizes fast cooling;
The application that should be appreciated that these embodiment only limits the scope of the invention for the present invention being described but not being intended to.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various changes, amendment and/or modification to the present invention, within these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (10)
1. the energy supply method of the circulating fan of a carbon dioxide household electric refrigerator, described carbon dioxide household electric refrigerator comprises cooling cycle system and storeroom, it is characterized in that: the expenditure and pressure device of described cooling cycle system adopts decompressor, and described decompressor is connected with described circulating fan is coaxial; In refrigerating operaton process, described decompressor is to the carbon dioxide coolant step-down of expanding, and expansion work is exported to described circulating fan, for the airflow circulating in storeroom.
2. energy supply method according to claim 1, is characterized in that: described decompressor can be rolling-piston-type, vortex, slide sheet type.
3. energy supply method according to claim 1, is characterized in that: described circulating fan is preferably axial flow blower.
4. according to the energy supply method described in claim 1-3, described carbon dioxide household electric refrigerator also comprises air channel, and described decompressor and circulating fan are coaxial to be arranged in air channel.
5. according to the energy supply method described in claim 1-4, also have the direct current generator of coaxial connection between described decompressor and circulating fan are coaxial, described direct current generator can start by additional power source, to be conducive to the quick startup of described cooling cycle system.
6. energy supply method according to claim 5, described direct current generator also comprises and its power storage module being connected by the first switching circuit, described first open and close circuit in the time that cooling cycle system starts in off-state, in the time that normally moving, cooling cycle system in closure state, by direct current generator, it is carried out to electric power storage with the expansion work that is conducive to decompressor.
7. energy supply method according to claim 6, described power storage module opens and closes circuit by second and is connected with the lighting device in storeroom, need to throw light on time, powers for illumination apparatus.
8. energy supply method according to claim 6, described power storage module can open and close circuit as the startup power supply of direct current generator, to be conducive to the quick startup of described cooling cycle system by described first.
9. twice decompression carbon dioxide household electric refrigerator, comprise cooling cycle system and storeroom and circulating fan, it is characterized in that: the one-level expenditure and pressure device of described cooling cycle system adopts decompressor, two-step throttle decompressor adopts electric expansion valve, and described decompressor is connected with described circulating fan is coaxial; In refrigerating operaton process, described one-level expenditure and pressure device decompressor is to the carbon dioxide coolant step-down of once expanding, and its expansion work is exported to described circulating fan, for the airflow circulating in storeroom; Described two-step throttle decompressor electric expansion valve is for being further depressurized to evaporating pressure to described decompressor outlet carbon dioxide coolant secondary.
10. twice decompression carbon dioxide household electric refrigerator according to claim 9, is characterized in that: be parallel with a bypass branch road with magnetic valve in the inlet and outlet of electric expansion valve (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410327024.8A CN104075522A (en) | 2014-07-10 | 2014-07-10 | Energy supply method for circulating fan of household carbon dioxide refrigerator |
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| CN201410327024.8A CN104075522A (en) | 2014-07-10 | 2014-07-10 | Energy supply method for circulating fan of household carbon dioxide refrigerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180585A (en) * | 2014-09-15 | 2014-12-03 | 安徽红叶节能电器科技有限公司 | Energy supply method for circulating fan of household carbon dioxide refrigerator |
| CN105371516A (en) * | 2015-08-31 | 2016-03-02 | 黑龙江爱科德科技有限公司 | Carbon dioxide two-stage cold and heat co-generation system |
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| CN1419089A (en) * | 2002-12-05 | 2003-05-21 | 天津大学 | Carbon dioxide transcrisis refrigeration circulation rotor type expansion energy-saving device |
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| CN204100637U (en) * | 2014-09-15 | 2015-01-14 | 安徽红叶节能电器科技有限公司 | A kind of twice decompression carbon dioxide household electric refrigerator |
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Patent Citations (7)
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| CN1419089A (en) * | 2002-12-05 | 2003-05-21 | 天津大学 | Carbon dioxide transcrisis refrigeration circulation rotor type expansion energy-saving device |
| CN1777781A (en) * | 2003-02-12 | 2006-05-24 | 开利公司 | Supercritical pressure regulation of vapor compression system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180585A (en) * | 2014-09-15 | 2014-12-03 | 安徽红叶节能电器科技有限公司 | Energy supply method for circulating fan of household carbon dioxide refrigerator |
| CN105371516A (en) * | 2015-08-31 | 2016-03-02 | 黑龙江爱科德科技有限公司 | Carbon dioxide two-stage cold and heat co-generation system |
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Application publication date: 20141001 |