CN103148599A - Solar water heating system of fin-type heat collector and embedded-type heat exchanger - Google Patents

Abstract

The invention relates to a solar water heating system of a fin-type heat collector and an embedded-type heat exchanger, and the solar water heating system comprises a water tank and a heat collector, and the solar water heating system is characterized in that an inner container is installed inside the water tank, the inner container and a spherical end enclosure form the embedded-type heat exchanger, the outer end of the heat exchanger is respectively provided with a medium cycling inlet and a medium cycling outlet, the medium cycling inlet and the medium cycling outlet penetrate through the outer wall of the water tank to be connected with a medium cycling pipeline, a vacuum pipe is installed in a heat collector framework, a U-shaped heat collection pipe is installed in the vacuum pipe, the U-shaped heat collection pipe consists of a heat collection pipe and a heat collection cold pipe, a metal fin wraps the heat collection pipe, the metal fin is closely attached to the wall of an inner pipe of the vacuum pipe, and the end parts of the heat collection pipe and the heat collection cold pipe are connected with the water tank through the medium cycling pipeline. By adding the metal fin, the heat transferring efficiency is increased, and the medium cycling speed and the heat collection efficiency are accelerated.

Description

The solar water heating system of a kind of finned heat collector and embedded heat exchanger

Technical field

The present invention relates to the solar water heater field, specifically the solar water heating system of a kind of finned heat collector and embedded heat exchanger.

Background technology

The Solar Enercy Fission Geyser water tank is mostly to adopt the pressure-bearing type structure at present, and heat exchange structure is divided into built-in heat exchange and external heat exchange.Built-in heat exchanger exists size of heat exchanger generally little owing to being subject to the water tank capacity restriction, affects the heat exchange efficiency of system; External heat exchanger water tank heat exchange area is large, and heat exchanger does not bear ambient pressure, but interlayer is difficult to enamel, makes its antiseptic property be difficult to guarantee, final heat exchanger damages, thereby causes whole water tank to be scrapped.And on the domestic market, heat collector has the thermal-arrest modes such as U-shaped tube type vacuum pipe thermal-arrest, all-glass vacuum tube thermal-arrest, heat pipe vacuum tube hot collector and flat plate collector.U-shaped tube type vacuum pipe heat collector causes heat absorption abundant not because its U-shaped tube outer surface is long-pending less than normal, makes the whole collecting efficiency of heat forfeiture in vacuum tube on the low side; Although the hot collecting efficiency of glass vacuum pipe heat collector is high, occupation rate of market is large, and because it can not bearing operation, easily bursting by freezing is leaked water in pipe, if a breakage is arranged in running, whole system will quit work; And the thermal capacitance of vacuum tube is larger, and solar energy first will could be exported hot water to the heating of the water in vacuum tube, and to night, the hot water in vacuum tube can not be fully utilized, and cause certain thermal loss; The collecting efficiency of energy vacuum heat pipe collector is high, but along with the increase vacuum of service life descends gradually, makes its collecting efficiency not enough.The flat plate collector heat leakage is large and be not suitable for cold district, and overall thermal efficient is not high.

Summary of the invention

Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of can significantly improve solar energy the finned heat collector in service life of the thermal efficiency and water tank and the solar water heating system of embedded heat exchanger.

the present invention solves the problems of the technologies described above the technical scheme that adopts: the solar water heating system of a kind of finned heat collector and embedded heat exchanger, comprise water tank and heat collector, it is characterized in that: inner bag is installed in water tank, inner bag and dome head form embedded heat exchanger, the outer end of heat exchanger arranges respectively exhaust outlet, medium circulation import and medium circulation outlet, the medium circulation import is connected with medium circulation all passes tank outer wall and is connected with the medium circulation pipeline, exhaust outlet connects air bleeding valve, inner bag is provided with water inlet pipe and outlet pipe, water inlet pipe, outlet pipe passes water tank and is connected with external pipe, mounting vacuum tube in described collector frame, vacuum tube is connected with collector frame by sealing ring, be provided with U-shaped thermal-collecting tube in vacuum tube, on U-shaped thermal-collecting tube, pipe is thermal-collecting tube, lower pipe is the cold pipe of thermal-arrest, thermal-collecting tube kalamein fin, metal fin is close to the vacuum tube inner pipe wall, the cold pipe of thermal-collecting tube and thermal-arrest is the outlet of connecting media thermal-arrest and the import of medium thermal-arrest respectively, collector frame is passed respectively in the outlet of medium thermal-arrest and the import of medium thermal-arrest, outlet is connected with medium circulation in medium circulation import by medium circulation pipeline and water tank, the formation closed circuit.

The present invention is owing to taking said structure, and heat exchanger is embedded heat exchange structure, is comprised of dome head and inner bag, heat exchange area is large, improved greatly the heat exchange efficiency of water tank, the whole enamel of heat exchanger and inner bag has been avoided the etching problem of water tank, the service life of greatly having improved water tank; Medium circulation outlet afterbody is made as bend pipe, and the medium circulation import is deep into heat exchanger inside, has accelerated the circulation rate of medium, greatly improves the heat exchange efficiency of water tank; Heat collector is to insert U-shaped thermal-collecting tube in ordinary vacuum tube, the thermal-collecting tube kalamein fin of U-shaped thermal-collecting tube, and metal fin contacts with the vacuum tube inwall, plays the effect of transferring heat.Heat exchanger in U-shaped thermal-collecting tube and pipe-line system, water tank forms the loop of sealing, by the heat exchange that loops of medium.The present invention can realize indirect heat exchange, bearing operation, and water quality is much cleaner, and bombing is without leakage, and system is the most stable, longest-lived, and the thermal efficiency is higher.Do not leak water in vacuum tube, so also non flouling behaviour, the long-term use also can not affect the efficient of its thermal-arrest.The damaged operational effect of its complete machine that also can not affect appears in vacuum tube, and this system adopts is the connection of rigidity, but pressure-bearing, can be by bring without silica gel sealing ring aging and the problem of revealing.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is vacuum tube structure schematic diagram of the present invention;

Fig. 3 is vacuum tube transverse cross-sectional view of the present invention.

Be labeled as in figure: 1. water tank, 2. inner bag, 3. heat exchanger, 4. exhaust outlet, 5. air bleeding valve, 6. circulatory mediator import, 7. circulatory mediator outlet, 8. medium circulation pipeline, 9. thermal-arrest outlet, 10. thermal-arrest import, 11. sealing rings, 12.U the type thermal-collecting tube, 13. water inlet pipes, 14. outlet pipes, 15. metal fin, 16. vacuum tubes, 17. collector frame, 18. dome head, 19. thermal-collecting tubes, the 20. cold pipes of thermal-arrest.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is described further:

as Fig. 1, Fig. 2, shown in Figure 3, the present invention relates to the solar water heating system of a kind of finned heat collector and embedded heat exchanger, comprise water tank and heat collector, it is characterized in that: the interior installation inner bag 2 of water tank 1, inner bag 2 forms embedded heat exchanger with dome head 18, the outer end of heat exchanger 3 arranges respectively exhaust outlet 4, medium circulation import 6 and medium circulation outlet 7, exhaust outlet 4 air valve 5 that runs in, medium circulation import 6 is connected 7 and passes respectively water tank 1 outer wall and be connected with medium circulation pipeline 8 with medium circulation, inner bag 2 is provided with water inlet pipe 13 and outlet pipe 14, water inlet pipe 13, outlet pipe 14 passes water tank 1 and is connected with external pipe, the interior mounting vacuum tube 16 of described collector frame 17, vacuum tube 16 is connected with collector frame 17 by sealing ring 11, the vacuum tube 16 U-shaped thermal-collecting tubes 12 of interpolation, on U-shaped thermal-collecting tube 12, pipe is thermal-collecting tube 19, lower pipe is the cold pipe 20 of thermal-arrest, thermal-collecting tube 19 is inserted with metal fin 15, metal fin 15 is close to vacuum tube 16 inner pipe walls, the outlet 9 of connecting media thermal-arrest and the medium thermal-arrest import 10 respectively of the cold pipe of thermal-collecting tube 19 and thermal-arrest 20 both ends, collector frame 17 is passed respectively in the outlet 9 of medium thermal-arrest and medium thermal-arrest import 10, be connected with medium circulation outlet 7 with the medium circulation import 6 of water tank 1 by medium circulation pipeline 8, form closed circuit.

When the present invention uses, first input cold water in the inner bag of water tank by water inlet pipe, metal fin in heat collector is collected the heat in vacuum tube rapidly, and pass to thermal-collecting tube in U-shaped thermal-collecting tube, medium in thermal-collecting tube is heated rapidly, medium exports by thermal-arrest and the circulation import enters into embedded heat exchanger and circulates, heat exchanger passes to cold water by medium with the heat of collecting in heat collector, cold water is heated, when temperature reaches setting value, medium stops circulation, then opens outlet pipe, just can obtain the needed hot water of people.

Claims (1)

1. the solar water heating system of a finned heat collector and embedded heat exchanger, comprise water tank and heat collector, it is characterized in that: inner bag is installed in water tank, inner bag and dome head form embedded heat exchanger, the outer end of heat exchanger arranges respectively exhaust outlet, medium circulation import and medium circulation outlet, the medium circulation import is connected with medium circulation all passes tank outer wall and is connected with the medium circulation pipeline, exhaust outlet connects air bleeding valve, inner bag is provided with water inlet pipe and outlet pipe, and water inlet pipe, outlet pipe pass water tank and be connected with external pipe; Mounting vacuum tube in described collector frame, vacuum tube is connected with collector frame by sealing ring, be provided with U-shaped thermal-collecting tube in vacuum tube, on U-shaped thermal-collecting tube, pipe is thermal-collecting tube, lower pipe is the cold pipe of thermal-arrest, thermal-collecting tube kalamein fin, metal fin is close to the vacuum tube inner pipe wall, the cold pipe of thermal-collecting tube and thermal-arrest is the outlet of connecting media thermal-arrest and the import of medium thermal-arrest respectively, collector frame is passed respectively in the outlet of medium thermal-arrest and the import of medium thermal-arrest, outlet is connected with medium circulation in medium circulation import by medium circulation pipeline and water tank, the formation closed circuit.

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