CN207585103U - A kind of flat-plate solar collector collecting plate - Google Patents

Abstract

The utility model discloses a kind of flat-plate solar collector collecting plate, mainly solves the problem of that collecting plate heat transfer area is small, the low extensive collecting system power consumption of heat exchange efficiency is excessive according to hydrodynamics and heat transfer principle.It includes heat-absorbing plate core, it is characterised in that：The heat-absorbing plate core includes symmetrical heat absorption mainboard and full runner subplate；One group of comb runner and microchannel flow passages being interconnected of the heat absorption mainboard and full runner subplate besieged city, one end connection manifold of the heat-absorbing plate core, the other end connection of the heat-absorbing plate core collect collector, hollow column are provided in the manifold.

Description

A kind of flat-plate solar collector collecting plate

Technical field

The utility model is related to a kind of solar energy heat utilization equipment more particularly to a kind of flat-plate solar collector thermal-arrests Plate.

Background technology

Flat-plate solar collector has the advantages such as collecting system simple in structure, at low cost, large-scale is stable, novel New research hotspot is increasingly becoming in walling and green building integral application, hot property and the product for how improving heat collector are resistance to Long property is had become as key content of concern.Absorber plate has both media flow and heat transfer double effects in heat collector, is photo-thermal The core equipment of conversion, and there are thermal contact resistance is big, runner is arranged, and unreasonable and power disappears between traditional heat sink plate and heat conducting pipe The defects of big is consumed, it is the localized hyperthermia that easily leads to that wall heat flux Density Distribution is uneven, working medium flow is unbalance and generate, badly damaged Base material finally weakens heat collector photothermal conversion efficiency of transmission.Therefore, it is direct using novel heat-absorbing plate core base material, raising runner Refrigerant heat transfer efficiency in transmission of heat by contact area, increase plate makes more efficient transmission between heat absorbing sheet and working medium, working medium and working medium Heat becomes the key to solve the above problems.

Utility model content

The purpose of this utility model is to provide a kind of flat-plate solar collector collecting plate, reach flash heat transfer, efficiently Heat exchange reduces power consumption.

The utility model adopts the following technical solution realizes goal of the invention：

A kind of flat-plate solar collector collecting plate, including heat-absorbing plate core, it is characterised in that：The heat-absorbing plate core include pair The heat absorption mainboard of title and full runner subplate；The heat absorption mainboard and full runner subplate encircle a city one group of comb runner being interconnected and Microchannel flow passages, one end connection manifold of the heat-absorbing plate core, the other end connection of the heat-absorbing plate core collect collector, institute It states and hollow column is provided in manifold.

Preferably, the heat absorption mainboard and the full runner subplate include microchannel wall surface, preceding expanding wall face and retraction wall Face, wherein the preceding expanding wall face is more linear than the retraction wall surface upright projection apart from short, the microchannel wall surface parallel arrangement.

Preferably, the hollow column set in the manifold forms annular channel and the heat-absorbing plate core left end The microchannel flow passages connection, and the upper and lower ends closing of the manifold, medium entrance are located at the manifold and institute State the opposite side center of heat-absorbing plate core connection；

The collector that collects is connected with the comb runner of the heat-absorbing plate core right end, and it is described collect collector up and down Closed at both ends, media outlet is located at the opposite side center collected collector and connected with the heat-absorbing plate core.

Preferably, the hollow column is inlayed with the concentric fixation of the manifold, and cross-sectional diameter is micro- logical more than described Road runner less than the comb runner, plays shunting, guide functions, and heat transferring medium is made to uniformly enter in the full runner of absorber plate.

Preferably, it is coated with stainless steel substrate spectral selective absorbing coating on the heat absorption mainboard.

The utility model has advantageous effect following prominent：

(1) heat transfer area is big, which uses flat box type full flow passage structure, and heat transferring medium flows through whole from inlet to outlet Block absorbs heat mainboard, and compared with traditional heat sink plate, direct contact heat transfer area is close to daylighting area maximum value.

(2) flash heat transfer, high efficient heat exchanging, reduction power consumption, major and minor plate section use periodically round and smooth zigzag fashion, Heat transferring medium makes heat transferring medium expanding wall face before flowing through slow down followed by preceding expanding wall face, retraction wall surface, microchannel wall surface Supercharging generates whirlpool, destroys heat transfer boundary layer；Retraction wall surface is being flowed through, is reducing the office generated due to side wall is collected, flow velocity increases Portion's pressure loss；Microchannel wall surface is being flowed through, is ensureing that heat transferring medium fluidised form is steady, homogenizes flowing, Unique physical design easily produces Raw whirlpool reduces local pressure loss, promotes flow equalization.

(3) set in manifold hollow column formed annular channel promote shunting, water conservancy diversion, heat transferring medium overall flow direction with Medium entrance is identical with the line direction of media outlet, makes media flow direction and flow held stationary, without flowing blind area, increase Heat exchange efficiency reduces flow resistance.

(4) heat-absorbing plate core uses stainless steel substrate, and is coated with stainless steel substrate spectral selection on the mainboard that absorbs heat and absorbs painting Layer, with reference to stainless steel substrate arrange in pairs or groups efficient absorption coating, make the absorber plate have corrosion resistance, durability, excellent plasticity and Toughness, photothermal conversion have stability and high efficiency.

Description of the drawings

Fig. 1 is the structure diagram of the utility model collecting plate.

Fig. 2 is the full cross section of fluid channel schematic diagram of heat-absorbing plate core in the utility model embodiment one.

Fig. 3 is collecting plate heat transferring medium flow schematic diagram in the utility model embodiment.

Fig. 4 is the full cross section of fluid channel schematic diagram of heat-absorbing plate core in the utility model embodiment two.

Fig. 5 is the full cross section of fluid channel schematic diagram of heat-absorbing plate core in the utility model embodiment three.

Reference sign：1 heat absorption mainboard, 2 full runner subplates, 3 manifolds, 4 collect collector, expanding wall face before 5, after 6 Contracting wall surface, 7 microchannel wall surfaces, 8 hollow columns, 9 medium entrances, 10 media outlets, 11 microchannel flow passages, 12 comb runners, 13 inhale Hot plate core, the full runner of 14 heat-absorbing plate cores.

Specific embodiment

The utility model is further described in detail with preferred embodiment below in conjunction with the accompanying drawings.

As shown in Figs. 1-5, a kind of flat-plate solar collector collecting plate by heat-absorbing plate core 13, manifold 3, collects collection Pipe 4 is formed, and the heat-absorbing plate core 13 includes heat absorption mainboard 1, full runner subplate 2；The heat absorption mainboard 1 and full runner subplate 2 enclose The comb runner 12 and microchannel flow passages 11 that one group of city is interconnected, comb runner 12 and microchannel flow passages 11 form heat-absorbing plate core Full runner 14.The complete 14 structure spacing of runner of heat-absorbing plate core in the embodiment fixes unicom successively, and unit cross section wall surface is successively For microchannel wall surface 7, preceding expanding wall face 5, retraction wall surface 6, wherein preceding expanding wall face 5 is more linear than 6 upright projection of retraction wall surface apart from short, 7 parallel arrangement of microchannel wall surface, as shown in Fig. 2, so set, the collecting plate uses flat box type full flow passage structure, increase heat exchange Medium heat-transfer area.There is heat transferring medium expanding wall face 5 before flowing through using periodically round and smooth zigzag fashion in major and minor plate section Slow down and be pressurized, generate whirlpool, destroy heat transfer boundary layer；6 wall surface of retraction is being flowed through, is reducing and is produced due to side wall is collected, flow velocity increases Raw local pressure loss；Microchannel wall surface 7 is being flowed through, ensureing that heat transferring medium fluidised form is steady, homogenize flowing, it is fast so as to reach Fast heat transfer, reduces power consumption at high efficient heat exchanging.

The formation annular channel of hollow column 8 is set in the manifold to connect with heat-absorbing plate core left end microchannel flow passages 11, and The upper and lower ends closing of manifold 3, medium entrance 9 are located at the opposite side center that manifold 3 is connected with heat-absorbing plate core；It is described Collect collector 4 to connect with heat-absorbing plate core right end comb runner 12, and collect the upper and lower ends closing of collector 4, media outlet 10 In collecting the opposite side center that collector 4 connects with heat-absorbing plate core 13.The hollow column 8 is inlayed with 3 concentric fixation of manifold, and Cross-sectional diameter is more than microchannel flow passages 11, less than comb runner 12.Using such structure design, medium can be played shunting, Water conservancy diversion makes heat transferring medium uniformly enter in the full runner 14 of absorber plate, linear line direction and the heat exchange of medium entrance to outlet Medium overall flow direction is identical from beginning to end, reduce flow resistance, in medium runner without flowing blind area, quickly will heat absorption The thermal energy of 1 sorption enhanced of mainboard is shifted by medium, it is ensured that homogeneous media heat exchange, efficient heat transfer make the collecting plate on the whole Maintain the fluency of medium.

Heat-absorbing plate core 13 uses stainless steel substrate, and is coated with stainless steel substrate spectral selection on the mainboard 1 that absorbs heat and absorbs painting Layer, with reference to stainless steel substrate arrange in pairs or groups efficient absorption coating, make the absorber plate have corrosion resistance, durability, excellent plasticity and Toughness, photothermal conversion have stability and high efficiency.

Embodiment two：

The embodiment the difference is that only with embodiment one：Complete 14 section of runner of absorber plate is playing card pattern spade Shape, as shown in Figure 4.Remaining all same, repeats no more.

Embodiment three：

The embodiment the difference is that only with embodiment one：Complete 14 section of runner of absorber plate is heart, such as Fig. 5 institutes Show.Remaining all same, repeats no more.

Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in the essential scope of the utility model, also belong to In the scope of protection of the utility model.

Claims (5)

1. a kind of flat-plate solar collector collecting plate, including heat-absorbing plate core, it is characterised in that：The heat-absorbing plate core includes symmetrical Heat absorption mainboard and full runner subplate；The heat absorption mainboard and full runner subplate are encircled a city one group of comb runner being interconnected and micro- Passages, one end connection manifold of the heat-absorbing plate core, the other end connection of the heat-absorbing plate core collects collector, described Hollow column is provided in manifold.

2. flat-plate solar collector collecting plate according to claim 1, it is characterised in that：The heat absorption mainboard and described Full runner subplate includes microchannel wall surface, preceding expanding wall face and retraction wall surface, wherein the preceding expanding wall face is than the retraction wall surface Upright projection is linearly apart from short, the microchannel wall surface parallel arrangement.

3. flat-plate solar collector collecting plate according to claim 1, it is characterised in that：It is set in the manifold The hollow column formed annular channel connected with the microchannel flow passages of the heat-absorbing plate core left end, and the manifold Upper and lower ends closing, it is central that medium entrance is located at the opposite side that the manifold connects with the heat-absorbing plate core；

The collector that collects connects, and the upper and lower ends for collecting collector with the comb runner of the heat-absorbing plate core right end Closing, media outlet are located at the opposite side center collected collector and connected with the heat-absorbing plate core.

4. flat-plate solar collector collecting plate according to claim 1, it is characterised in that：The hollow column with described point Inlay with one heart, and cross-sectional diameter is more than the microchannel flow passages by fixation for adfluxion pipe, less than the comb runner.

5. the flat-plate solar collector collecting plate according to one of claim 1-4, it is characterised in that：The heat absorption mainboard On be coated with stainless steel substrate spectral selective absorbing coating.