CN206683297U - A kind of new off-grid type solar domestic refrigerator - Google Patents

Abstract

A kind of new off-grid type solar domestic refrigerator is made up of photovoltaic battery panel, three phase converter, refrigerator, and wherein refrigerator includes fresh-keeping layer, frozen coating, cold-storage layer and working lining, and working lining includes compressor, evaporator, condenser and condensation auxiliary blower.Direct current caused by photovoltaic battery panel is converted into three-phase alternating current to drive the three-phase asynchronous Ac motor of compressor to work after three phase converter, and the Connection Mode effectively increases the utilization ratio that solar energy is converted into after electric energy.The casing of refrigerator uses cold-storage layer under, storage layer is in upper design structure, cold-storage layer can carry out physics energy storage on daytime using the method for cold storage of ice making, cold energy is supplied to fresh-keeping layer at night, and the effect that refrigerator uninterruptedly freezes round the clock is realized by this energy storage pattern.The system of the off-grid type solar domestic refrigerator is relatively simple, and refrigeration is obvious, is easy to overhaul, and can solve the problem that the food fresh keeping problem away from power network area, has very high practicality.

Description

A kind of new off-grid type solar domestic refrigerator

Technical field

It the utility model is related to a kind of new off-grid type solar domestic refrigerator, particularly a kind of off-network in remote sites The domestic refrigerator of no storage battery, belongs to technical field of solar utilization technique.

Background technology

With the development of electronic technology and the invention of solar cell, increasing electrical equipment is widely and solar energy It is used in combination.Wherein, for most sunny but relatively backward country, such as marine island, remote mountain areas.Too Positive energy Refrigeration Technique has good season matching, i.e. summer solar radiation is stronger, and corresponding refrigeration demand is also maximum, and the winter Season, solar radiation was relatively weak, and now refrigeration demand is also smaller.Based on this feature, solar refrigeration technology has been increasingly becoming The study hotspot in Refrigeration Specialty field.

Current most of solar energy refrigerators are all based on DC driven, and combine battery and complete the off-network at night and supply Electricity, application demand of the solar energy refrigerator away from power network can be met.But it still has some problems, for example direct current generator is manufactured into This height, maintenance is complicated, service life is short and the life problems of battery.Asked for above-mentioned existing for existing solar energy refrigerator Topic, the utility model devise long, simple in construction, good reliability the solar energy of a kind of Solar use efficiency high, service life Refrigerator, to promote off-grid type solar energy refrigerator in the application development of domestic environments.

The content of the invention

The utility model aims to overcome that the technical deficiency of existing off-grid type solar domestic refrigerator, designs a kind of new Solar energy refrigerator so that can solve the problem that the food such as fruits and vegetables, seafood away from power network, sun-drenched marine island and remote districts Refrigeration problem.

The utility model one of solves the problems, such as：It is proposed a kind of different with solar panel, three phase converter and three The new Connection Mode of alternating current generator is walked, the difficulty of direct current generator solar energy refrigerator Maintenance and Repair is overcome, refrigerator can be made stable Property enhancing, service life increase.

Technic relization scheme regarding to the issue above is as follows：Two direct current electric wires access three phase variable frequency of solar panel The DC output terminal of device（This terminal can realize direct current input function）, three-phase output end of three phase converter connected by electric wire The three-phase asynchronous Ac motor of compressor is connect, so that direct current changes after three phase converter caused by solar panel It is changed into voltage stabilizing three-phase electricity to drive three-phase asynchronous Ac motor to work.In whole power supply process, three phase converter not only acts as inverse Become the effect of device, while the output frequency of three-phase electricity can be automatically adjusted according to DC electric power, and then control the operation of compressor Power.The above-mentioned mode of connection not only simplify inversion and the frequency modulation link of complexity, also effectively increases solar energy and is converted into electric energy Utilization ratio afterwards.

What the utility model solved the problems, such as two is：Overcome it is existing without battery type solar energy refrigerator night food Fresh-keeping problem, a kind of energy storage scheme of ice cold-storage is proposed, this scheme make it that refrigerator structure is simple, and practical function is obvious.

Regarding to the issue above realize that technical scheme is as follows：A kind of casing of new off-grid type solar domestic refrigerator is upper In lower three parts, storage layer, cold-storage layer and working lining.Storage layer is located at casing top, is divided into two above and below fresh-keeping layer, frozen coating Individual part, the former is used for food fresh keeping, the latter is used for food product refrigeration.Cold-storage layer is located in the middle part of casing, enclosed construction and is full of water, Using the method for physical storage solar energy, i.e. cold storage of ice making；Cold-storage layer is separated with storage layer with thermal energy conduction material.Working lining position In lower box, compressor, evaporator, condenser, condensation auxiliary blower are included；Compressor, condenser, evaporator pass through working medium Pipeline is sequentially connected, and the cycle fluid inside pipeline is condensing agent；Evaporator is two kinds of structures of outer fin plate and spiral pillar, Outer fin plate evaporator is distributed in the double wall of fresh-keeping layer and frozen coating, and spiral pillar evaporator is located in the water of cold-storage layer； Condensation auxiliary blower can dry carries out Physical temperature-lowering to condenser, auxiliary condenser.Refrigerator is when running daytime, high pressure liquid State condensing agent flows into evaporator, the explosive evaporation in evaporator, from cold-storage material water by cold-storage helical layer pillar evaporator inlet Middle draw heat is mutually changed into gaseous state condensing agent steam from liquid condensation agent and entered in compressor, and three phase electric machine work drives compressor Gaseous state condensing agent steam of the work by gaseous state condensing agent both vapor compression for HTHP is then warm to Environment release by condenser Amount, finally mutually become liquid condensation agent and flow into the outer fin plate evaporator of storage layer, based on this process reciprocation cycle.Cold-storage Material water then becomes the mixture of ice and water of zero degrees celsius and finally tied due to being absorbed heat by water and become the water of zero degrees celsius Cheng Bing, so as to which cold is stored.The evaporator in storage layer remains on work be used for food fresh-keeping daytime simultaneously, to night ice Start to melt released cold quantity that to continue storage layer fresh-keeping.Daytime, cold-storage helical layer pillar evaporator and the outer fin plate of storage layer Evaporator separately works, cold-storage helical layer pillar evaporator cold storage of ice making, and the outer fin plate evaporator refrigeration of storage layer is fresh-keeping；Night Between, cold-storage layer cold-storage ice is that storage layer improves cold so that storage layer continues fresh-keeping.

The utility model compared with prior art, has advantages below：

1st, off-grid type solar energy refrigerator is realized in the case of no storage battery, night still has the fresh-keeping function of cold-storage, The main physics energy storage method for employing cold storage of ice making, cold-storage material be water, with recycle, free of contamination feature；

2nd, the function of DC inversion and three phase variable frequency control is realized using three phase converter, solar energy is effectively increased and turns Turn to the utilization ratio after electric energy；

3rd, the body structure of solar energy refrigerator is simple, while has the storage of cold and utilize function so that it possesses more Good actual utilizing status.

Brief description of the drawings

Fig. 1 is utility model solar domestic refrigerator system schematic diagram.

Fig. 2 is utility model box body structure of refrigerator schematic diagram.

Description of reference numerals：1 solar panel, 2 positive output lines, 3 negative output lines, 4 battery board brackets, 5 three-phases Frequency converter, 6 three-phase U phase lines, 7 three-phase V phase lines, 8 three-phase W phase lines；9 refrigerators, 10 fresh-keeping layer evaporators, 11 fresh-keeping layer dividing plates, 12 Frozen coating evaporator, 13 frozen coating dividing plates, 14 cold-storage layer evaporator, 15 cold-storage layer dividing plate, 16 compressors, 17 fresh-keeping layers, 18 is cold Freeze layer, 19 admission ports, 20 cold-storage layers, 21 working linings, 22 condensation auxiliary blowers, 23 condensers.

Embodiment

As shown in figure 1, a kind of new off-grid type solar domestic refrigerator is by solar panel（1）, positive output line（2） Negative output line（3）, solar-cell panel support（4）, three phase converter（5）, three-phase U phase lines（6）, three-phase V phase lines（7）, three Phase W phase lines（8）And refrigerator（9）Composition.Solar panel（1）It is placed in outdoor and by battery board bracket（4）Fixed, its positive pole is defeated Outlet（2）With three phase converter（5）The connection of P+ ends, and negative output line（3）With three phase converter（5）N- ends connection, three Phase inverter device（5）Pass through three-phase U phase lines（6）, three-phase V phase lines（7）, three-phase W phase lines（8）With refrigerator（9）Power supply unit connection. During day, solar panel（1）Receive sunshine and produce direct current, by positive output line（2）And negative output line（3） Electric energy is transferred to three phase converter afterwards（5）, by three phase converter（5）DC-AC transformation after be changed into three-phase electricity, Three-phase electricity has been supplied to refrigerator by three-phase output line（9）.During this, the frequency of three-phase electricity is according to the size of current of direct current Automatically adjust, realize the function of automatic frequency adjustment.

As shown in Fig. 2 refrigerator body evaporator is by fresh-keeping layer（17）, frozen coating（18）, cold-storage layer（20）And working lining （21）Composition；Wherein fresh-keeping layer（17）In fresh-keeping layer evaporator（10）, frozen coating（18）In frozen coating evaporator（12） On the interior back side of refrigerator or medial surface, both evaporators are fin plate structure, internal circulation refrigerant；Cold-storage layer （20）For totally enclosed type insulation construction, inside is filled with water, the cold-storage layer evaporator in water（14）It is internal same for spiral pole structure Flow refrigerant；What is installed in working lining is compressor（16）, condenser（23）, condensation auxiliary blower（22）And pipe for flowing of refrigerant Road, compressor（16）Three phase electric machine and condensation auxiliary blower（22）With three-phase U phase lines（6）, three-phase V phase lines（7）, three-phase W Phase line（8）Connection, works by three-phase electric energy；Fresh-keeping layer evaporator（10）, frozen coating evaporator（12）, cold-storage layer evaporator （14）, compressor（16）, condenser（23）It is sequentially connected by refrigerant tubing.During refrigerator energization work, compressor（16）Will Refrigerant compression be HTHP gas, the condensed device of gas stream（23）When condensation auxiliary blower（22）In the presence of change For low temperature and low pressure liquid, refrigerant liquid is flowing through cold-storage layer evaporator（14）Shi Shenghua absorbs heat, by cold-storage layer（20）In water Low temperature ice cube is gradually become, while also achieves the function of ice cold-storage；The chilled layer evaporator of cold-producing medium stream not distilled completely （12）With fresh-keeping layer evaporator（10）When equally there occurs distillation heat-absorbing action, frozen coating（18）Interior frozen coating evaporator（12） It is more air themperature is down to below zero degrees celsius to reach refrigerating effect, and fresh-keeping layer（17）Interior fresh-keeping layer Evaporator（10）It is less that fresh-keeping layer air themperature can only be made to be down to more than cold degree Celsius to reach fresh-keeping effect；The system completely vaporized Cryogen most Zhongdao compressor（16）Shi Zaici is compressed to high temperature and high pressure gas, and then forms the cycle of states of refrigerant, from And the effect of circularly cooling is reached.

Under nighttime conditions, photovoltaic battery panel（1）Do not generating electricity, compressor（16）With condensation auxiliary blower（22）Also stop Work, but cold-storage layer（20）In a large amount of ice cubes have been obtained on daytime, ice cube now starts to melt, and the cold discharged passes through Frozen coating dividing plate（13）It is transferred to frozen coating（18）, continue to frozen coating（18）Requirement of low temperature, cold also extends through fresh-keeping layer Dividing plate（11）, maintain fresh-keeping layer（17）Temperature requirements, frozen coating dividing plate therein（13）With fresh-keeping layer dividing plate（11）It is heat Energy conductive material, it can effectively realize the quick conducting power of cold.

Claims (3)

1. a kind of new off-grid type solar domestic refrigerator, it is characterised in that by photovoltaic battery panel, three phase converter, refrigerator group Into wherein refrigerator is respectively from top to bottom storage layer, cold-storage layer and working lining, and storage layer includes fresh-keeping layer and frozen coating two Part, working lining include compressor, evaporator and condenser, condensation auxiliary blower.

2. according to a kind of new off-grid type solar domestic refrigerator described in claim 1, the direct current electric wire of photovoltaic battery panel The DC output terminal of three phase converter is connected, and the three-phase output end of three phase converter connects the phase asynchronous exchange of compressor Motor.

3. according to a kind of new off-grid type solar domestic refrigerator described in claim 1, the casing of refrigerator uses cold-storage layer Physics storage can be carried out using the method for cold storage of ice making on daytime in upper design structure, cold-storage layer in lower and fresh-keeping layer and frozen coating Can, cold energy supplies frozen coating and fresh-keeping layer above at night.