CN105299920B - A kind of heat-absorbing plate core and plate solar collector of plate solar collector - Google Patents
A kind of heat-absorbing plate core and plate solar collector of plate solar collector Download PDFInfo
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- CN105299920B CN105299920B CN201410374521.3A CN201410374521A CN105299920B CN 105299920 B CN105299920 B CN 105299920B CN 201410374521 A CN201410374521 A CN 201410374521A CN 105299920 B CN105299920 B CN 105299920B
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- plastic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The present invention relates to solar water heater fields, and in particular to a kind of heat-absorbing plate core and plate solar collector of plate solar collector.The heat-absorbing plate core of plate solar collector, including two collectors and comb, the comb be set between two collectors and respectively with two header in communication, the collector and comb are made of thermostable heat-conductive plastic material, and the comb is several mutually independent hollow tubes or the plastic plate for being provided with several ducts.Since plate core of flat plate collector is made of thermostable heat-conductive plastic material, so will not be corroded, resistance to scale ability is strong.Full-plastic plate heat collector quality can it is light more than half, convenient transportation, and price is low.Working media flows into heat collector by collector, is absorbed heat by plastics plate core, and the working media after then heating is pooled to another collector and passes, and quickly absorbs solar radiant energy using special plastic piping.
Description
Technical field
The present invention relates to solar water heater fields, and in particular to the heat-absorbing plate core of a kind of plate solar collector and too
Positive energy flat plate collector.
Background technique
Traditional flat plate collector is usually by metal heat-absorbing plate core, profile frame, glass cover-plate, heat-preservation cotton and backboard group
At.Wherein heat-absorbing plate core is the core of flat plate collector, and the heat-absorbing plate core of flat plate collector is mainly inhaled by metal tubes and metal
Hot coating two parts composition, metal heat absorbing coating are connect by welding with metal tubes.Metal tubes mainly by collector, comb and
External piece composition.Heat-absorbing plate core is absorbed solar radiation by metal heat absorbing coating and is converted to thermal energy, and thermal energy is flowed through collector
Heat-transfer working medium absorbs, and then heat-transfer working medium is pooled to comb by collector, by passing thermal energy.
Since traditional flat plate collector is metal tubes, so being easy scaling, corrosion resistance is poor, prolonged rotten
It is thinning that erosion will lead to pipeline, or even the case where generation pipeline leak.If heat collector water inlet generates more serious water mist,
Metal coating is corroded quickly, seriously affects the heat absorption capacity of heat collector.
Since metal and glass density are big, flat plate collector weight is usually all very big, causes transport installation inconvenient.And
Price is very high.
And the heat-preservation cotton of flat plate collector can generate volatile materials at a high temperature of heat collector inside, influence heat collector
Heat absorption capacity.
Based on above description, there is an urgent need for a kind of heat-absorbing plate cores of plate solar collector, to solve to deposit in the prior art
Metal plate heat collector be easy scaling, the problem that corrosion resistance is poor, weight is big, price is high.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of heat-absorbing plate core of plate solar collector, the absorber plate
Core use with absorb solar energy function thermostable heat-conductive plastic material is made, have it is corrosion-resistant, not scaling, light weight,
Low-cost feature.
The object of the invention is also to provide a kind of plate solar collectors to have with above-mentioned heat-absorbing plate core
Corrosion-resistant, not scaling, light weight, low-cost feature.
The embodiment of the present invention uses following technical scheme:
A kind of heat-absorbing plate core of plate solar collector, including two collectors and comb, the comb are set to two
Between the collector and respectively with two header in communication, the collector and comb are by thermostable heat-conductive plastic material system
At the comb is several mutually independent hollow tubes or the plastic plate for being provided with several ducts.
Preferably, the collector is integral molded plastic collector or is welded by several hollow subset pipes by heat seal
At.
Preferably, the cross-sectional area at least one duct of connection comb is less than at least one comb hole in the collector
The cross-sectional area in road.
Preferably, the both ends of the comb pass through set and the header in communication in connection respectively, covered in the connection
One end face, which is internally provided in several, covers duct, and the comb is inserted into the middle set duct and infuses with covering in the connection
It moulds together；The other end covered in the connection is provided with the middle set boss with cavity, the cavity in the middle set boss
With the middle set hole link；
Boss is stretched out outside one end Middle face of the collector, several and sky inside the collector are provided in the boss
The duct of chamber connection, the boss stretch out the bulge-structure for having cavity outside, and the cavity in the bulge-structure passes through described convex
Duct in platform is connected to the cavity in the collector, and the collector, boss, bulge-structure are structure as a whole；The protrusion knot
Structure is welded together with the middle set boss heat seal, and the cavity in the bulge-structure and the cavity in the middle set boss connect
It is logical.
A kind of plate solar collector, including suction described in frame and any of the above item being set in the frame
Hot plate core, the upside sealed set of heat-absorbing plate core has transparent cover plate in the frame, and guarantor is provided on the downside of the heat-absorbing plate core
Warm layer, the frame are plastic frame, and inside is connected with backboard, and the insulating layer and backboard, plastic frame pass through foaming
Integrally.
Preferably, the insulation layer surface is covered with reflectance coating.
Preferably, the plastic frame is connected together by plastic corner, or it is molded entirely through plastic material
It forms.
It is connected on the plastic frame preferably, the both ends of two collectors pass through four elastic tubes respectively.
Preferably, described elastic tube one end connect and fastens with the collector, the other end connect and fastens with pipe fitting,
The pipe fitting is caught in the hole slot of the plastic corner or the plastic frame.
Preferably, the material of the transparent cover plate is plastic cover plate or glass cover-plate.
The advantageous effects for the technical solution that the embodiment of the present invention proposes are:
(1) since the collector of the heat-absorbing plate core of flat plate collector and comb are by the high temperature resistant with absorption solar energy function
Conductive plastic material is made, so will not be corroded, resistance to scale ability is strong.Full-plastic plate heat collector quality can it is light more than half,
Convenient transportation, and price is low.Working media flows into heat collector by the collector of lower end, is absorbed heat by plastics plate core, so
The collector that working media after heating afterwards is pooled to heat collector upper end passes, and is quickly absorbed too using special plastic piping
Positive radiation energy.
(2) insulating layer of Full-plastic plate heat collector of the present invention is that backboard integral foam forms, and intensity is high, will not generate
Volatile materials, and the efficiency for making the solar radiation heat of plate core absorption be transmitted to heat transfer medium greatly improves, and improves
The intensity of heat collector, enhances thermal insulation property, so that entire flat plate collector has good heat absorption capacity.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also implement according to the present invention
The content of example and these attached drawings obtain other attached drawings.
Fig. 1 is the sectional view for the flat plate collector that the specific embodiment of the invention provides；
Fig. 2 is the structural schematic diagram for the heat-absorbing plate core that the specific embodiment of the invention provides；
Fig. 3 is a kind of schematic cross-section of the preferred embodiment for the comb that the specific embodiment of the invention provides；
Fig. 4 is the schematic cross-section of another preferred embodiment for the comb that the specific embodiment of the invention provides；
Fig. 5 is the structural schematic diagram for the collector that the specific embodiment of the invention provides；
Fig. 6 is the structural schematic diagram that covers in connection that the specific embodiment of the invention provides.
In figure:
1, transparent cover plate；2, heat-absorbing plate core；3, frame；4, insulating layer；5, elastic tube；
21, collector；22, comb；23, it is covered in connection；
211, boss；212, bulge-structure；
231, middle set boss.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will the technical scheme of the embodiment of the invention will be described in further detail in conjunction with attached drawing, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Fig. 1 is the sectional view for the flat plate collector that the specific embodiment of the invention provides.As shown in Figure 1, flat plate collector master
It to be made of transparent cover plate 1, heat-absorbing plate core 2, frame 3 and 4 four part of insulating layer.The heat-absorbing plate core 2 is located at the frame 3
Interior, the upside sealed set of the heat-absorbing plate core 2 has the transparent cover plate 1, it is preferred that the transparent cover plate 1 is located at the side
At the upper port of frame 3.The insulating layer 4 is located at the downside of the heat-absorbing plate core 2.
Fig. 2 is the structural schematic diagram for the heat-absorbing plate core that the specific embodiment of the invention provides.As shown in Fig. 2, the application provides
Plate solar collector heat-absorbing plate core 2, including two collectors 21 and be set between two collectors 21 and respectively with
The comb 22 of two collectors 21 connection, wherein the collector 21 is with comb 22 by the high temperature resistant with absorption solar energy function
Conductive plastic material is made.The thermostable heat-conductive plastic material is made of substrate and added material, and the material of the substrate can
Become, the substrate can be polypropylene, polyethylene, polybutene, polycarbonate, Fypro, polytetrafluoroethylene (PTFE), modified poly- third
One of alkene, modified poly ethylene, modified polybutene, modified polycarbonate, modified polyamine fibre, modified Teflon.
Meanwhile the added material in the thermostable heat-conductive plastic material can be graphite, graphene, carbon black, carbon fiber,
High heat-conducting ceramic, AlN, BN, SiC, SiN, Al2O3、MgO、B4C3, BeO, CaO, NiO, thermally conductive carbon dust, glass putty, copper powder, aluminium powder,
At least one of nano-graphite, nano aluminium oxide, carbon nanotube or several mixing, the special material material is variable,
Special material adding proportion is variable.
The collector 21 is hollow pipeline, and the comb 22 also includes several water pipes, the pipe of the comb 22
Road is communicated with the pipeline of the collector 21.The working media flows into heat collector by collector 21, if being further separated into from collector 21
It in the channel of dry comb 22, is absorbed heat at this time by plastics heat-absorbing plate core, the heat of absorption is used to the work in pipeline
Medium is heated, and the collector 21 that the working media after heating is pooled to the heat collector other end passes, and this programme can benefit
Solar radiant energy is quickly absorbed with special plastic piping.
Since plate core of flat plate collector is made of thermostable heat-conductive plastic material, so will not be corroded, resistance to scale ability
By force.Full-plastic plate heat collector quality can it is light more than half, convenient transportation, and price is low.
In this present embodiment, the comb 22 can have different structures, can may be single row for whole comb
Pipe.Several structures of comb 22 introduced below:
Fig. 3 is a kind of schematic cross-section of the preferred embodiment for the comb that the specific embodiment of the invention provides.As shown in figure 3,
The comb 22 includes several mutually independent hollow plastic pipes.Certain hollow plastic pipe can also be changed to hollow plastic sheet.
Preferably, multiple independent combs 22 form a module, the comb 22 in module is arranged parallel to each other, multiple module connections
To connecting again with collector 21 later together, heat-absorbing plate core is formed.Certainly, multiple independent combs 22 can not also form module,
It is connect respectively with collector 21, forms heat-absorbing plate core.
Fig. 4 is the schematic cross-section of another preferred embodiment for the comb that the specific embodiment of the invention provides.Such as Fig. 4 institute
Show, the comb 22 is the plastic plate for being provided with several ducts.The program can increase the endotherm area of heat-absorbing plate core, make
Solar radiant energy can faster be absorbed by obtaining plastic piping.
In this present embodiment, the structure size of the comb 22 is variable, and cross sectional shape is variable, can be round, rectangular and
Other shapes；The number of modules that multiple combs 22 form is variable, and 22 number of comb that each module is included is variable.
In this present embodiment, the collector 21 may include a long middle vacuous subset pipe, can also by it is several it is short in
Empty subset pipe is welded by injection molding or heat seal.Collector 21 extends boss 211, the boss 211 from an end face
It is inside provided with the duct of several and 21 connects with the internal cavities of collector, stretches out the protrusion for having cavity outside the boss 211
Structure 212, the cavity in the bulge-structure 212 are connected by the duct in the boss 211 and the cavity in the collector 21
It is logical, as shown in Figure 5.
In this present embodiment, preferably, the cross section at least one duct of comb is connected in the collector 21
Product is less than the cross-sectional area in the duct of at least one comb 22.
In this present embodiment, preferably, the boss 211, bulge-structure 212 and collector 21 are structure as a whole.
In this present embodiment, 21 structurally variable of collector, variable dimension, 21 section of collector can for round, square or
Other shapes.
In this present embodiment, the boss 211 can extend from the middle part of an end face of the collector 21 or corner
Out, can also be extended by the other positions of an end face.It is of course also possible to boss 211 is not provided with, directly in the collector 21
Bulge-structure 212 is set on one end face.
In this present embodiment, preferably, the both ends of the comb 22 pass through set 23 and two institutes in connection respectively
State the connection of collector 21.As shown in fig. 6, set 23 is preferably rectangle structure in the connection, an end face of set 23 in the connection
It is internally provided in several and covers duct, the comb 22 is inserted into the middle set duct and is molded with set 23 in the connection
To together.The other end of set 23 is provided with the middle set boss 231 with cavity in the connection, in the middle set boss 231
Cavity and the middle set hole link.
When assembling, first by comb 22 with connect in set 23 connect together, then will in connection set 23 middle set boss 231
212 heat seal of bulge-structure with collector 21 is welded together.Cavity and the connection in the bulge-structure 212 of the collector 21
Cavity connection in the middle set boss 231 of middle set 23, middle set boss 231 and 212 Inner Constitution closing chamber of bulge-structure, collector 21
Internal duct by the seal chamber with connect in cover 23 duct connection, and then be connected to comb 22.
In this present embodiment, 23 structurally variable, variable dimension are covered in the connection, internal gutter diameter can be changed.
In this present embodiment, the collector 21 can also be directly molded into together with comb 22.
In this present embodiment, the structure size of the heat-absorbing plate core is variable, and heat-absorbing plate core can be overall structure, can also be with
For multiple modular compositions.
The flat plate collector is assembled from bottom to top, first carries out the assembly of frame 3, and frame can be turned by four plastics
Angle is plugged into together, and whole frame can also be formed by injection molding.Frame 3 carries out integral foam after the assembly is completed, inside frame 3
Bottom end forms insulating layer 4, and heat-absorbing plate core 2 is vertically mounted to 4 top of insulating layer inside flat plate collector later, is then carried out
The installation of cover board 1, last gluing seal trim strip fastening.
In this present embodiment, the frame 3 is plastic frame, and inside is connected with backboard, the insulating layer 4 and backboard,
Plastic frame is integral by foaming, and foaming pronotum is connected together with frame 3.The backboard can be plastic construction,
It is also possible to the other structures such as galvanized sheet, aluminium-foil paper.Insulating layer semi-finals degree made of foaming is high, will not generate volatile materials, and
And the efficiency for making the solar radiation heat of heat-absorbing plate core absorption be transmitted to heat transfer medium greatly improves, and improves flat plate collector
Intensity, thermal insulation property is enhanced, so that entire flat plate collector has good heat absorption capacity.
In this present embodiment, 4 variable thickness of insulating layer, structurally variable, material are variable；It can be integral foam, it can also
It is other thermal retardation forms, thermal insulation material can be polyurethane foam plastics, be also possible to other materials such as rock wool, mineral wool, glass
Cotton, polyester fiber cotton, polystyrene foam plastics, phenolic foam, aeroge etc..
In this present embodiment, preferably, 4 surface of insulating layer is covered with reflectance coating, reflectance coating be divided into substrate and
The material of absorption film, absorption film is variable, can be the metals such as aluminium, copper, nickel, silver, and the material that absorption film includes is selective heat-absorbing
Material.
In this present embodiment, preferably, the frame 3 can be that integral knot is molded entirely through plastics material
Structure, is also possible to the structure that frame links into an integrated entity by plastic corner, and the entirety frame or plastic corner are provided with
Hole slot, hole slot are convenient for the right angle setting of heat-absorbing plate core, are also convenient for the sealing of pipeline.
In this present embodiment, the material of the frame 3 is variable, can be plastic frame, be also possible to aluminum alloy frame, tie
Structure is variable, can be single layer frame, or multilayer hollow structure, variable cross-section, cross sectional shape are variable.The plastics
The material at turning is variable, and structure size is variable, and the shape of hole slot is variable.
In this present embodiment, preferably, the use of the heat-absorbing plate core 2 right angle setting mode, the four of heat-absorbing plate core 2
A connector passes through elastic tube 5 and frame 3 is flexibly connected.Elastic tube 5 is axially extending along collector 21, one end and 21 phase of collector
Even, one end is connected with frame 3.Preferably, it is provided with hole slot on the plastic corner or frame, four springy pipeline joints pass through
Hole slot is installed in place.Due to the connection between four intake-outlets and collector 21,5 transition of elastic tube is all used, it can be abundant
Buffer the differential expansion of heat-absorbing plate core 2 and frame 3.
In this present embodiment, preferably, the hole slot is U-shaped mouth.Wherein the shape of hole slot is variable.The heat absorption
Boss is stretched out outside the upper end collector 21 of plate core 2, boss snaps on frame, prevents the downslide of plate core under the effect of gravity.It is described
Overhanging projection shape is variable, can carry out plate core by other structures and fix.
In this present embodiment, scheme, described 5 one end of elastic tube are inserted with the boss that collector 21 stretches out as a further preference
It connects, and with hose clamp clamping, hose clamp clamping is also used in the other end and outer tube joint grafting.It is caught in after the outer tube joint fastening described
In hole slot, and fastened with sliding block.The material of the elastic hose is variable, and hose fastening means is variable.
In this present embodiment, preferably, the outer tube joint can be threadedly coupled with outer pipeline, can also be with outer pipeline
It is attached by quick plug connection mode.Wherein the material of outer tube joint is variable, and fastening means is variable, and structure size can
Become, thread connecting mode is variable, and quick inserting mode is variable.
In this present embodiment, the cover board 1 is sealed and is fixed by way of Nian Jie and press strip compression with frame 3.Institute
Stating transparent cover plate 1 can be plastic cover plate, be also possible to glass cover-plate.The sealing means of transparent cover plate 1 are variable, can be gluing
It connects, can be compressed for press strip, or bonding and press strip seal jointly.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (9)
1. a kind of heat-absorbing plate core of plate solar collector, including two collectors (21) and comb (22), the comb (22)
It is set between two collectors (21) and respectively with two collectors (21) and is connected to, which is characterized in that the collector
(21) it is made with comb (22) of thermostable heat-conductive plastic material, the comb (22) is several mutually independent hollow tubes
Or it is provided with the plastic plate in several ducts；
The both ends of the comb (22) pass through set (23) in connection respectively and are connected to the collector (21), cover (23) in the connection
An end face be internally provided in several and cover duct, the comb (22) be inserted into the middle set duct and with the connection
Middle set (23) is molded into together；The other end that (23) are covered in the connection is provided with the middle set boss (231) with cavity, institute
State the cavity and the middle set hole link in set boss (231)；
It is stretched out boss (211) outside one end Middle face of the collector, is provided with several and the collector in the boss (211)
(21) duct of connects with the internal cavities, the boss (211) stretch out the bulge-structure (212) with cavity, the protrusion knot outside
Cavity in structure (212) is connected to by the duct in the boss with the cavity in the collector, the collector (21), boss
(211), bulge-structure (212) is structure as a whole；The bulge-structure (212) is welded to middle set boss (231) heat seal
Together, the cavity in the bulge-structure (212) is connected to the cavity in the middle set boss (231).
2. the heat-absorbing plate core of plate solar collector as described in claim 1, which is characterized in that the collector (21) is whole
Body injection molding collector is welded by several hollow subset pipes by heat seal.
3. the heat-absorbing plate core of plate solar collector as claimed in claim 2, which is characterized in that connect in the collector (21)
Run in pipe at least one duct cross-sectional area be less than at least one comb (22) duct cross-sectional area.
4. a kind of plate solar collector, including frame (3) and be set in the frame (3) such as claims 1 to 3
The upside sealed set of described in any item heat-absorbing plate cores, the interior heat-absorbing plate core of the frame (3) has transparent cover plate (1), the suction
Insulating layer (4) are provided on the downside of hot plate core, which is characterized in that the frame (3) is plastic frame, and inside is connected with back
Plate, the insulating layer (4) are integral by foaming with backboard, plastic frame.
5. plate solar collector as claimed in claim 4, which is characterized in that insulating layer (4) surface is covered with reflection
Film.
6. plate solar collector as claimed in claim 4, which is characterized in that the plastic frame is connected by plastic corner
It is connected to together, or is molded entirely through plastic material.
7. plate solar collector as claimed in claim 6, which is characterized in that the both ends difference of two collectors (21)
It is connected on the plastic frame by four elastic tubes.
8. plate solar collector as claimed in claim 7, which is characterized in that described elastic tube one end and the collector
(21) it connects and fastens, the other end connect and fastens with pipe fitting, and the pipe fitting is caught in the plastic corner or the plastics
In the hole slot of frame.
9. plate solar collector as claimed in claim 4, which is characterized in that the material of the transparent cover plate is plastic lid
Plate or glass cover-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374521.3A CN105299920B (en) | 2014-07-31 | 2014-07-31 | A kind of heat-absorbing plate core and plate solar collector of plate solar collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374521.3A CN105299920B (en) | 2014-07-31 | 2014-07-31 | A kind of heat-absorbing plate core and plate solar collector of plate solar collector |
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| CN105299920A CN105299920A (en) | 2016-02-03 |
| CN105299920B true CN105299920B (en) | 2019-01-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107367076A (en) * | 2016-05-13 | 2017-11-21 | 苏州阳光四季睿智新能源有限公司 | Without the nonmetallic peripheral structure flat-plate solar collector of water smoke |
| CN106766263A (en) * | 2016-12-23 | 2017-05-31 | 山东浩歌工贸有限公司 | Integral type plate core and preparation method thereof and heat collector and preparation method thereof |
| CN110003438A (en) * | 2019-03-29 | 2019-07-12 | 傲川科技(河源)有限公司 | Thermally conductive gel and preparation method thereof |
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| CN204084914U (en) * | 2014-07-31 | 2015-01-07 | 青岛经济技术开发区海尔热水器有限公司 | A kind of heat-absorbing plate core of plate solar collector and plate solar collector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2151642A2 (en) * | 2003-06-13 | 2010-02-10 | VKR Holding A/S | Solar collector |
| CN101408352A (en) * | 2008-10-27 | 2009-04-15 | 万建红 | Plastic flat plate heat collector |
| CN101852497A (en) * | 2010-02-26 | 2010-10-06 | 广东联塑科技实业有限公司 | Polymer-based solar collector |
| CN102095255A (en) * | 2010-12-31 | 2011-06-15 | 浙江梅地亚新能源科技有限公司 | Integrated back plate type integrated foaming and heat-insulating flat-plate solar collector |
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| CN105299920A (en) | 2016-02-03 |
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