CN103411321A - Flat plate type solar heat collector - Google Patents
Flat plate type solar heat collector Download PDFInfo
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- CN103411321A CN103411321A CN2013103281591A CN201310328159A CN103411321A CN 103411321 A CN103411321 A CN 103411321A CN 2013103281591 A CN2013103281591 A CN 2013103281591A CN 201310328159 A CN201310328159 A CN 201310328159A CN 103411321 A CN103411321 A CN 103411321A
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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
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Abstract
The invention provides a flat plate type solar heat collector which comprises a body, a heat collecting plate core and a glass plate. The heat collecting plate core is a coil pipe type plate core. The flat plate type solar heat collector is characterized in that the body is a box, a metal plate is bent and welded to form the box, an opening is formed in a surface of the box, two opposite edges of the box is inwardly bent to form steps, a groove mounting position is formed in internal space of the box and is close to the opening, the size of the groove mounting position is matched with that of the glass plate, the glass plate is fixed onto the groove mounting position, the heat collecting plate core is fixed to a stepped back surface of the groove mounting position, closed space is formed between the heat collecting plate core and the body, foam heat-insulation materials are filled in the closed space, heat dissipating space is formed between the heat collecting plate core and the glass plate, and the height of the heat dissipating space is equal to the thickness of each step. The flat plate type solar heat collector has the advantages that the flat plate type solar heat collector is simple in structure and high in rigidity, can be connected with another component conveniently and brings convenience for leakage detection and compensation; the efficiency of fins and the heat collecting efficiency are improved, the thickness of air inside the heat collector is reduced, convection heat dissipation is decreased, and the heat insulation performance is improved.
Description
Technical field
The invention belongs to solar thermal collector structure field, particularly relate to a kind of flat-plate solar heat collector.
Background technology
Due to the environmental pollution that shortage and the conventional energy resource of the energy brings, the utilization of the regenerative resource of environmental protection becomes a large focus.And the solar energy of " inexhaustible " more and more is subject to people's attention and favors.Heat utilization to solar energy also has conventional solar water heater to solar heat pump, solar heating, solar energy combined air conditioner future development, so high pressure-bearing is freeze proof, simple, reliably, life-span is long, can meet the multi-functional of multiple working medium operation needs, and the high-performance solar heat collector becomes the key addressed this problem.
Solar thermal collector is solar radiant energy to be converted into to the critical piece of heat energy.Different with operating temperature according to the thermal-arrest mode, generally be divided into focusing and non-focusing formula two classes.In the non-focusing formula, mainly contain closing-sunning type heat collector, flat-plate collector and vacuum tube type heat collector etc.Can adopt the only have flat-plate collector of cold-producing medium as working medium.
Flat plate solar water heater has passed through the development of decades, and technology is more ripe and perfect, and has possessed the not available advantageous feature of other type solar energy.
1. be particularly suitable for and the architecture-integral requirement.Flat plate solar water heater is due to its planar structure characteristic, and in the architecture-integral application of solar energy, morphosis is random flexibly, during design, is not subjected to the constraint of form or size, is easy to realize the combination with building element.The collecting plate of adding it is metal material, can conveniently adopt the connected modes such as silk knot, welding, for installation, maintenance and use are provided convenience.
2. has the higher thermal efficiency.Flat-plate solar collector is but a continuous plane, and sunshine can be accepted in whole heat collector surface.So under identical daylighting area and intensity of sunshine, the per day efficiency of flat plate solar water heater generally will be higher than solar vacuum-tube water heater.
3. has good load performance.Because the absorber plate of flat-plate solar collector is made by the metal tube material, heat collector also adopts metal parts with being connected of miscellaneous part, therefore, can bear larger pressure.
4. stable performance while forming large system.For places such as some large-scale ，Ru hotels, place, natatorium, factories, when using solar water heater, often need a lot of piece solar thermal collectors to form large-scale system.
Existing common flat type solar heat collector as shown in Figure 1, by frame 11, seal trim strip 12, daylighting glass 13, insulation gas-bearing formation 14, heat absorbing sheet 15, heat transfer medium pipe 16, heat-insulation layer 17, formed, daylighting glass 13 and heat absorbing sheet 15 all are installed on frame 11, insulation gas-bearing formation 14 is between daylighting glass 13 and heat absorbing sheet 15, heat-insulation layer 17 is fixedly installed on the back side of heat absorbing sheet 15, heat transfer medium pipe 16 is spacedly distributed in heat absorbing sheet 15, daylighting glass 13 by seal trim strip 12 press seals on frame 1.Existing flat type solar heat collector is used fin tube to be main heat collector band mostly, and with the synthetic collector plate core of tube connector soldering group, the subject matter of its existence is as follows:
1. the heat-insulating property of the flat-plate solar collector of this structure is poor, and the heat part that heat absorbing sheet absorbs passes to the heat transfer medium in the heat transfer medium pipe, becomes available heat; And the gas temperature that another part makes to be incubated in gas-bearing formation raises, the part heat in the insulation gas-bearing formation loses by metal edges framework and daylighting glass; Some heat directly passes glass with the form of long-wave radiation and is lost to the external world.Owing between each parts, contacting defective tightness, there is larger leakage heat.
2. the flat plate collector member of this structure is many, poor rigidity, and intensity is low, causes its mechanical performance lower, and the specification requirement of installation and restriction are many.
3. welding junction is many, the easy corrosion of weld, and bearing capacity is poor, easily leaks, and has affected the life-span.
4. standardization level is lower, is not suitable for large-scale standardized production, and the dimensional accuracy of final products is low.
Adopt the seal trim strip structure, the life-span is short, the consumable accessory mistake, and the maintenance while being damaged is more difficult.
Adopt total tubular construction, the flow velocity of its heat-transfer working medium is low, and maldistribution has affected exchange capability of heat.
Deficiency for wing pipe type thermal-arrest tube core, prior art has also adopted coil pipe type, as Chinese patent application number, be 201010256406.8 to disclose a kind of plate core, for flat-plate solar heat collector, can be specifically tube-sheet type plate core or coil pipe type plate core, comprise absorber plate and be welded on the comb on described absorber plate, described comb has and the contacted welding of described absorber plate plate face plane, on cross section, can be " C " font of " D " font, rectangle, triangle, opening closure or the shapes such as " U " font of opening closure.
But existing heat collector adopts wing pipe type or coil pipe type no matter be, its heat-collecting plate core and glass cover-plate are arranged on body, all by the frame of body, bracing frame being set, heat-collecting plate core and glass cover-plate are placed on bracing frame and fix, the problems such as this structure not only exists installs complexity, and intensity is low, and make between heat-collecting plate core and glass cover-plate, and the heat-dissipating space formed between heat-collecting plate core, glass cover-plate and body is larger, make energy consumption run off serious.
Summary of the invention
Purpose of the present invention will overcome the existing deficiency of prior art exactly, provides a kind of member few, good rigidly, and installation and easy to connect, efficiency is high, is applicable to the flat-plate solar collector with Integration of building.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of flat type solar heat collector, comprise body, heat-collecting plate core and glass plate, described heat-collecting plate core adopts coil pipe type plate core, described body is become the box body of an opening by a sheet metal bent jointing, and wherein two relative edges of this box body become stepped toward internal bend, make the inner space of box body near opening part, form a groove installation position coincide with the size of glass plate, described glass plate is fixed on this groove installation position, described heat-collecting plate core is fixed on the stepped back side of groove installation position, between heat-collecting plate core and body, form a confined space, this confined space is filled with foaming thermal-insulating, between heat-collecting plate core and glass plate, form a heat-dissipating space, the distance of this heat-dissipating space is equal to step-thickness.Technical scheme of the present invention is by forming body by bent jointing as a metal, and the inside that also is formed on body in the process bent is stepped, this stair-stepping two sides is mounting glass plate and heat-collecting plate core respectively, make the present invention simple in structure, the member adopted is minimum, install be connected all more convenient, and can be by stair-stepping concrete structure be set, adjust the heat-dissipating distance between glass plate and heat-collecting plate core, and, at heat-collecting plate core and the formed space-filling foaming thermal-insulating of body, effectively reduce the heat energy loss of heat-collecting plate core.
The distance of described heat-dissipating space can adjust according to actual conditions, is provided as 5-25mm, preferably adopts 10mm.
Described body adopts the monoblock steel plate, and four jiaos of steel plate are all cut away a rectangular blocks, and four spring folding welding form box body, and corresponding long relative both sides are bent into stepped.
Working media of the present invention is water or cold-producing medium, uses as the conventional solar boilers mode of water therefore can take working media, and the cold-producing medium of can usining is again used as the direct expanding solar heating pump evaporimeter of working media.
Advantage of the present invention: it is just available that water or cold-producing medium are done refrigerating medium, and function is many, adaptable; The thermal-arrest ability is strong, high insulating effect, and collecting efficiency is high; Pipeline adopts single heat exchange tube, and bearing capacity is strong, good effect of heat exchange; Can under unpowered state, move by the free convection mode, be beneficial to gas-liquid separation, improve heat transfer effect; Life-span is long, steady quality, and standardization level is high, is applicable to large-scale production; Thickness is little, and member is few, and good rigidity is easy to install, can be directly as external wall or roofing heat insulating material; The convenient connection, replacing and easy to maintenance.
The accompanying drawing explanation
Fig. 1 is conventional flat type solar heat collector schematic diagram.
Fig. 2 is the schematic diagram of heat-collecting plate core of the present invention.
Fig. 3 is the schematic diagram of body of the present invention.
Fig. 4 is the schematic diagram that the present invention assembles.
Fig. 5 is the schematic diagram of profile of the present invention and adapter.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing.
Structure of the present invention as shown in Figure 4, comprises that body 1, heat-collecting plate core 6, glass plate 4 and insulation material 5 form, and described heat-collecting plate core 6 is comprised of welding absorber plate 2 and coiled pipe 3 together.
Wherein body construction of the present invention as shown in Figure 3, adopts the cold-rolled steel sheet of 1-2mm, at first cuts away four jiaos, what then four edge breaks are become to preset is stepped, become frame, then adopt conventional electric arc welding to get up at four angles, make the body 1 of flat-plate solar collector.
Heat-collecting plate core 6 structures of the present invention as shown in Figure 2, are bent into required loop by copper pipe, form coiled pipe 3, and are welded into an integral body with the absorber plate 2 that monoblock copper coin or aluminium sheet form, the selective absorbing material of spraying on the lighting surface of absorber plate 2.
Heat-collecting plate core 6 is put into to body 1, and filling-foam insulation material 5 in cavity, play insulation, improves the effect of rigidity.On top, add a cover individual layer or the compound glass plate 4 of high transmission rate.Body 1 backboard or side direction have been welded stand connection in advance, are connected with the support of standard.
Further, whole device just outer watch only have body, glass plate and support three parts form, and only have two connectors that expose 8, have reduced interface quantity, and have exposed, and facilitate joint connection in site and leak detection, remedy also relatively easy many.Between coiled pipe 3 and absorber plate 2, adopt closely knit welding, reduce thermal contact resistance, improved fin efficiency and collecting efficiency.Adopt selective coating to strengthen the solar absorption ability, and the absorber plate 2 of monoblock has increased receiving area, the gap existed while having avoided adopting fin tube, attenuate the air thickness of heat collector inside, reduced heat loss through convection, also improved heat-insulating property.
Concrete preparation process of the present invention is as follows:
1, coiled pipe adopts the good copper pipe material of heat conductivility, suitably increases pipe thickness, improves its bearing capacity, makes working media when being water, adopts than the light pipe of Large Diameter Pipeline, thereby reduces with flow resistance, avoids incrustation and obstruction.With automatic pipebender, copper pipe is bent into set snakelikely, coiled pipe forms closed figure by equally spaced straight line with the circular arc be connected, and adjusts according to the discharge connection position is different.Coiled pipe is arranged in the mode of bottom in and top out, owing to adopting water to do refrigerating working medium, can utilize the buoyancy lift that heats up rear density reduction and cause, by the free convection mode, moves under unpowered condition.
2, using the copper coin of monoblock or aluminium sheet as absorber plate, by absorber plate and the closely knit welding of coiled pipe bent, thereby can reduce thermal contact resistance between absorber plate and coiled pipe, improve heat exchange property.After welding, may there is larger distortion, need to be through punching press setting, this has just obtained heat-collecting plate core.
3, heat-collecting plate core is carried out to coating for selective absorption without a side of coiled pipe, can select as required the kind of coating.
4, body adopts the cold-rolled steel sheet of 1-2mm, at first cuts away four jiaos, and the perforate of reserved heat-collecting plate core discharge connection, then according to drawing requirement, four edge breaks is become to default stepped, becomes frame, then adopts conventional electric arc weldings to get up at four angles.According to the needs of installing overleaf or side welding support connector.
5, body is derusted, pickling, then spray with oxirane.Can improve the resistance to corrosion of body, also can adopt different colors, improve aesthetic property, better and Integration of building.
6, heat-collecting plate core is put into to body, rely on the steel plate location of location use.From reserved aperture, inject polyurethane foam material, by special-purpose tool positioned, after the band foaming, must clean out on burr, particularly absorber plate that the cleaning foaming forms.
7, by sealing joint strip on the surrounding pad of the high transparent glass of individual layer or bilayer, put into the draw-in groove of this overground part, by stainless steel metal spare, fix, the groove uniform thickness that the thickness of glass plate and body are reserved, after installing like this, whole solar thermal collector becomes a flat board, its dimensionally stable, good rigidity, the convenient installation.
8, by welding valve connector in two overhanging adapters of heat-collecting plate core, or expander, rest and reorganize, during ready-made installation, adopt welding or cutting ferrule mode to be connected with total the mistake, thereby form the solar heat collector array.
Claims (10)
1. flat type solar heat collector, comprise body, heat-collecting plate core and glass plate, described heat-collecting plate core adopts coil pipe type plate core, it is characterized in that, described body is become the box body of an opening by a sheet metal bent jointing, and wherein two relative edges of this box body become stepped toward internal bend, make the inner space of box body near opening part, form a groove installation position coincide with the size of glass plate, described glass plate is fixed on this groove installation position, described heat-collecting plate core is fixed on the stepped back side of groove installation position, between heat-collecting plate core and body, form a confined space, this confined space is filled with foaming thermal-insulating, between heat-collecting plate core and glass plate, form a heat-dissipating space, the distance of this heat-dissipating space is equal to step-thickness.
2. flat type solar heat collector according to claim 1, is characterized in that described heat-dissipating space distance is 5-25mm.
3. flat type solar heat collector according to claim 1 and 2, is characterized in that described body adopts the monoblock steel plate, and four jiaos of steel plate are all cut away a rectangular blocks, and four spring folding welding form box body, and corresponding long relative both sides are bent into stepped.
4. flat type solar heat collector according to claim 1, it is characterized in that described heat-collecting plate core puts into body, with securing member or steel disc location, described glass plate is positioned at the body interior top, glass plate adopts press strip or bolt to fix, folder one deck sealing strip between glass plate and body, the side direction gap between glass plate and body adopts weather proofing sealant to fill.
5. flat type solar heat collector according to claim 1, it is characterized in that described heat-collecting plate core is welded on absorber plate and is formed by coiled pipe, described coiled pipe is curved and forms with automatic pipebender by single copper pipe, two ports of coiled pipe stretch out originally external, become two connectors that expose, injected water or cold-producing medium in coiled pipe, described absorber plate is made by copper coin or aluminium sheet.
6. flat type solar heat collector according to claim 5, is characterized in that the selective absorbing material of spraying on the lighting surface of described absorber plate.
7. flat type solar heat collector according to claim 1, is characterized in that the backboard of described body or frame place are welded with stand connection, or adopt the connected mode of clamping or bolt to be connected with support.
8. flat type solar heat collector according to claim 1, is characterized in that it is that the cold-rolled steel sheet of 1-2mm is made that described body adopts thickness.
9. flat type solar heat collector according to claim 1, is characterized in that described glass plate adopts single or multiple lift high permeability glass cover plate.
10. flat type solar heat collector according to claim 1, is characterized in that described foaming thermal-insulating is polyurethane heat insulation material.
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| CN201310328159.1A CN103411321B (en) | 2013-07-31 | 2013-07-31 | A kind of flat type solar heat collector |
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| CN201310328159.1A CN103411321B (en) | 2013-07-31 | 2013-07-31 | A kind of flat type solar heat collector |
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| CN103411321B CN103411321B (en) | 2015-10-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928221A (en) * | 2016-05-20 | 2016-09-07 | 深圳诺必达节能环保有限公司 | Heat conduction pipe heat exchange solar heating system |
| CN106322834A (en) * | 2016-08-31 | 2017-01-11 | 北京建筑大学 | Direct-expansion type heat pump device and flow control method for heat collecting liquid |
| CN110595099A (en) * | 2019-10-09 | 2019-12-20 | 中山华享家科技有限公司 | Solar-assisted evaporation heat pump system |
| CN110926070A (en) * | 2019-11-07 | 2020-03-27 | 广东申菱环境系统股份有限公司 | Thermosiphon passive defrosting and condensing system and control method thereof |
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Patent Citations (8)
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| US5373672A (en) * | 1990-08-20 | 1994-12-20 | Josef Gartner & Company | Arrangement of mounting sections for the fastening of a pane of glass |
| WO1998008117A1 (en) * | 1996-08-16 | 1998-02-26 | Johann Windholz | Lens tile and solar energy system |
| CA2569360A1 (en) * | 2005-11-29 | 2007-05-29 | Paul Kerr | Improved outdoor solar collector and integrated display panel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928221A (en) * | 2016-05-20 | 2016-09-07 | 深圳诺必达节能环保有限公司 | Heat conduction pipe heat exchange solar heating system |
| CN106322834A (en) * | 2016-08-31 | 2017-01-11 | 北京建筑大学 | Direct-expansion type heat pump device and flow control method for heat collecting liquid |
| CN110595099A (en) * | 2019-10-09 | 2019-12-20 | 中山华享家科技有限公司 | Solar-assisted evaporation heat pump system |
| CN110926070A (en) * | 2019-11-07 | 2020-03-27 | 广东申菱环境系统股份有限公司 | Thermosiphon passive defrosting and condensing system and control method thereof |
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| CN103411321B (en) | 2015-10-28 |
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Address after: 528313 Shunde City, Foshan province Chencun town machinery and equipment Park, No. ten, No. Road, No. 8 Patentee after: GUANGDONG SHENLING AIR-CONDITIONING EQUIPMENT CO., LTD. Address before: 528313 Shunde City, Foshan province Chencun town machinery and equipment Park, No. ten, No. Road, No. 8 Patentee before: Guangdong Shenling Air Conditioning Equipment Co., Ltd. |