Vacuum flat solar energy heat collector
Technical field
The invention belongs to application of solar, particularly the solar energy heat collector structural design
Background technology
Solar thermal collector is the critical piece of solar water heater.It mainly is to be that carrier converts solar energy to heat energy with water, thereby realizes the application of solar water heater.
The commitment of solar thermal collector, people are exactly simple with a metal bucket, and with surperficial blacking, water is filled in the inside.Such facility thermal efficiency is low, can not be incubated.Even now, because cheap, even user oneself can do, and uses so also have at present.
First generation solar thermal collector is dull and stereotyped, and it is that thermal-arrest and water storage are separated, and water tank is incubated.By the thermal-arrest plate hot water is sent to water tank.But this device has several difficult: A, evening can not be incubated, and the hot water temperature in the water tank is affected; B, ice up in winter, container explosion; C, the thermal efficiency are low.
Having now yet and carry out improved products on flat plate collector, is not that direct water absorbs heat as dull and stereotyped the inside, but by cloth copper pipe more inside, water is placed in the copper pipe, reaches the purpose of thermal-arrest.This facility has solved container explosion problem, but other problems does not solve.It has brought cost to go up significantly simultaneously.Its price surpasses present solar energy heat collection pipe product.
Second generation solar thermal collector is a thermal-collecting tube.Its main feature is to be and will to form vacuum between two glass tubes, coats gradual change aluminium nitrogen aluminium film at the outer wall of interior pipe simultaneously.
This heat collector has solved insulation, antifreeze problem, increases the thermal efficiency because gradual change aluminium nitrogen aluminium film uses simultaneously, has reduced heat radiation.
But this product has brought new problem again, and glass tube can explode when hot water and cold water compile exactly.
More than the common issue with of these heat collectors be all to be placed on the roof.The one, be difficult to safeguard; The 2nd, not attractive in appearance; The 3rd, potential safety hazard, the wind thing of hurting sb.'s feelings of getting off often takes place; Four are to use and are restricted, and are difficult to use in the family of bottom of the building layer, and just being to use also can only be on the roof, and pipeline is oversize.
Summary of the invention
The objective of the invention is for overcoming the deficiency that above solar thermal collector exists, design a kind of novel solar thermal collector, have thermal efficiency height, resistance to frost good, do not break, characteristics that cost is low, can realize that thermal-arrest separates with heat accumulation, can hang on the wall, security strengthens.
A kind of vacuum flat solar energy heat collector that the present invention proposes, it is characterized in that, the flat plate collector of this device for constituting by two flat inside and outside casings that are nested together, connect with grid muscle sheet network between the inside and outside casing of this heat collector, this grid muscle sheet is provided with through hole, and two spaces between the casing are connected, end in this outer case is provided with a valve that vacuumizes, vacuumize valve by this, the air between two casings is extracted out, form vacuum layer; Also be respectively equipped with the outlet pipe interface and the water inlet pipe interface of straight-through internal box at the upper and lower end face of this heat collector; The front panel of this outer case is a clear sheet, and the outer surface of the panel of corresponding internal box scribbles gradual change aluminium nitrogen aluminium film.
The another kind of vacuum flat solar energy heat collector that the present invention proposes, it is characterized in that, this device comprises a plurality of flat plate collector arrays that are made of two flat inside and outside casings that are nested together, connect with grid muscle sheet network between the inside and outside casing of this each heat collector, this grid muscle sheet is provided with through hole, and two spaces between the casing are connected, end in this outer case is provided with a valve that vacuumizes, vacuumize valve by this, the air between two casings is extracted out, form vacuum layer; Also be respectively equipped with the outlet pipe interface and the water inlet pipe interface of straight-through internal box at the upper and lower end face of this heat collector; The front panel of this outer case is a clear sheet, and the outer surface of the panel of corresponding internal box scribbles gradual change aluminium nitrogen aluminium film; The water inlet pipe interface of each flat plate collector of the same delegation of this flat plate collector array is connected with the outlet pipe interface of the same column flat plate collector of next line, the outlet pipe interface of each the most up flat plate collector is interconnected and constitutes total outlet pipe interface, and the water inlet pipe interface of each the most descending flat plate collector is interconnected and constitutes total outlet pipe interface.
Characteristics of the present invention and effect:
Heat collector of the present invention carries out new structural design on the basis of using for reference existing vacuum heat-collecting Manifold technology, have following characteristics: A, improve the thermal efficiency; B, vacuum heat-preserving lower heat radiation; C, icing, resistance to frost is good; D, do not break, do not have the bombing problem; E, can realize that thermal-arrest separates with heat accumulation, be not limited to be placed on the roof, can hang on the wall that security strengthens; F, owing to be modular construction, be convenient to standardization, extensive streamlined production, lower cost, reduce support, reduce packaging material, lower cost of transportation; G, flexibility are strong, are applicable to family, hotel, enterprise or the unit of any hot water consumption.
Description of drawings
Fig. 1 is embodiment 1 structural representation of the vacuum flat solar energy heat collector of a kind of single heat collector formation of the present invention.
Fig. 2 is the grid muscle chip architecture schematic diagram of embodiment 1.
Fig. 3 is embodiment 2 structural representations of a kind of vacuum flat solar energy heat collector that is made of 4 collector arrays of the present invention.
The specific embodiment
The vacuum flat solar energy heat collector of the present invention's design reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows:
The heat collector of heat collector of the present invention for constituting by two flat inside and outside casings that are nested together, connect with grid muscle sheet network between the inside and outside casing of this heat collector, this grid muscle sheet is provided with through hole (two spaces between the casing are connected), end in outer case is provided with a valve that can vacuumize, by vacuumizing valve, air between two casings is extracted out, formed vacuum layer; Also be respectively equipped with the outlet pipe interface and the water inlet pipe interface of straight-through internal box at the upper and lower end face of this heat collector; The front panel of this outer case is a clear sheet, and the outer surface of the panel of corresponding internal box scribbles gradual change aluminium nitrogen aluminium film.
The concrete size of heat collector of the present invention can be determined its long, high, thick size according to actual needs.
For example generally be long 1200-2000 millimeter, high 1000-2000 millimeter, thick 100-200 millimeter, wall thickness is decided according to material.
The width of grid muscle sheet is decided according to the space between the interior outer case, for example is generally the 10-50 millimeter; Thickness is decided according to material therefor, for example is generally the 0.5-2 millimeter.
According to the size of water consumption, can increase or reduce box sizes, if box sizes strengthens or dwindles the also corresponding change of the size of its grid muscle sheet.Be more preferably and adopt a plurality of heat collectors to make up arbitrarily, form plate configuration heat collector.Increased the flexibility that product uses.
The function of this device each several part is respectively described below;
Grid muscle sheet network of the present invention had both played the effect of fixing two box locations, had reinforced bulk strength again, and especially its fastness is stronger when vacuum forms.The wall thickness and the material of outer case in the rare close degree of grid muscle sheet network is decided by, if inside and outside casing wall thickness is thin or material is relatively poor, intensity a little less than, then can encrypt grid muscle sheet network; If inside and outside casing wall thickness is thicker or material is better, intensity is stronger, then can be with sparse grid muscle sheet network.
Grid muscle sheet network can pass through mould process with being connected of interior outer case, and one-shot forming also can be processed molding bonded respectively; Grid muscle slice graticule is the form of bar intersection anyhow, also can only establish horizontal stripe or vertical bar, and the shape and the size of the through hole on the grid muscle sheet are not limit, as long as there is enough intensity to make two faces of its support indeformable under vacuum condition.
The front panel of outer case is made with transparent material, as glass or lucite.Make light to penetrate like this and arrive the internal box top layer.The outside of the case face of internal box correspondence scribbles gradual change aluminium nitrogen aluminium film.After light arrived this aspect, endothermic effect increased, and heat radiation reduces.Simultaneously, because gradual change aluminium nitrogen aluminium film is to be coated in the internal box outside, do not influence the water quality of internal box the inside.
Outer case can be made with a kind of material of material, as glass or lucite; Also can make with the material of two kinds of materials, as the glass or the poly (methyl methacrylate) plate of front panel employing printing opacity, other panel adopts opaque stainless steel or plastic plate; Such technology is very ripe.The material of internal box is that a kind of material is made, and adopts stainless steel or plastic plate.
There is a water inlet interface device lower end, and cold water is from entering inner water tank here.There is an outlet coupling device upper end, and hot water is from output here.In the internal box, behind the heat energy of water through the transform light energy Cheng Shui of solar energy, the temperature of water improves, and the water of heat begins up to flow, and the circulation that brings out hot water on the cold water is advanced in so automatic formation lower end.Again this heat collector is connected with water tank, thereby reaches the purpose that improves constantly the water tank water temperature.
Embodiment 1
The vacuum flat solar energy heat collector of present embodiment is a kind of structure of single heat collector, as shown in Figure 1, constitute by two flat internal box 1 that are nested together and outer case 2, the square network that forms with grid muscle sheet 3 between this two tanks connects, this grid muscle sheet 3 is provided with round tube hole 31, making two spaces between the casing is to connect, as shown in Figure 2, a valve that can vacuumize 21 is set in the upper end of outer case, by vacuumizing valve, air between two casings is extracted out, formed vacuum layer; Also be respectively equipped with the outlet pipe interface 11 and the water inlet pipe interface 12 of straight-through internal box at the upper and lower end face of this casing; The front panel of this outer case is the lucite clear sheet, both sides panel, upper and lower side panel and rear board have been the plastic opaque plate, each panel of this internal box is made by corrosion resistant plate, and the outer surface of this internal box and outer case front panel corresponding panel scribbles gradual change aluminium nitrogen aluminium film (gradual change aluminium nitrogen aluminium film and preparation technology thereof are the ordinary skill in the art).
The size of the outer case of present embodiment is to be about 2000 millimeters, and high about 2000 millimeters, thick about 200 millimeters, wall thickness is decided according to used material.
The size of internal box is to be about 2840 millimeters, and is high approximately 2840 millimeters, thick about 100 millimeters.
Space between the interior outer case of present embodiment is 50 millimeters, the stainless steel strip that have round tube hole of grid muscle sheet for intersecting anyhow, and thickness is 2 millimeters.Circularhole diameter on it is 10 millimeters.
Embodiment 2
The vacuum flat solar energy heat collector of present embodiment is a kind of combining structure of 4 casings, as shown in Figure 3, the structure of each casing of present embodiment is identical with embodiment 1, the water inlet pipe interface that just will go up two casings 10 of row is connected with the following outlet pipe interface of two casings 20 of row, and the outlet pipe interface of two casings 10 of last row is linked to each other constitutes a total outlet pipe interface 30; The water inlet pipe interface of two casings 20 of following row links to each other and constitutes a water inlet manifold interface 40; Constitute the heat collector flat plate array.
The size of the outer case of each heat collector of present embodiment is to be about 1200 millimeters, high about 1000 millimeters, and thick about 100 millimeters.
The size of internal box is to be about 1180 millimeters, and is high approximately 980 millimeters, thick about 80 millimeters.
Space between the interior outer case of present embodiment is about 10 millimeters, and grid muscle sheet is the plastic strip that has round tube hole of horizontal stripe, and thickness is about 0.5 millimeter.Circularhole diameter on it is about 5 millimeters.