CN102840689A

CN102840689A - Solar heat collector

Info

Publication number: CN102840689A
Application number: CN2012103582221A
Authority: CN
Inventors: 余华阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-08
Filing date: 2012-09-08
Publication date: 2012-12-26

Abstract

The invention belongs to the field of solar application, and discloses a solar heat collector. A heat collector of a known solar water heater is poor in heat-insulating property and low in efficiency because just a layer of transmitting glass is arranged on a plate core to keep warm. The solar heat collector is technically characterized in that a heat exchange pipe (3) is bonded to a semicircular groove on the surface of a heat-absorbing plate (4) to be the plate core; the plate core is arranged in the middle of a vacuum glass box body composed of a lower half box (1) and a cover plate (2) having homogeneous support columns, so that a vacuum heat-insulating layer is formed between the plate core and the glass box body, and a reflecting layer is arranged on the back side of the plate core, so that three heat transfer modes are cut off; the heat-insulating effect is better, and the water temperature can be up to over 90 DEG C. The heat collector is efficient, low in cost, long in service life, lighter, thinner, easier to be integrated with walls of buildings due to a vacuum technology and a bonding technology. A vacuum plate also can enhance the heat preservation and insulation performances of a building wall body, and facilitates the development of green buildings.

Description

Solar thermal collector

Technical field

The invention belongs to the Application of Solar Energy field, especially the plate solar water heater.

Background technology

Known solar thermal collector is made up of box body and the plate core that is arranged in the box body, and box body is made up of half box body (1) and transparent cover plate (2), and the plate core is made up of the heat exchanger tube (3) that is fixed on absorber plate (4) surface.Transparent cover plate is a plate glass, owing to only cover one deck glass above the plate core, heat insulation effect is poor, again because the heat-insulation layer below the plate core is not only thick but also heavy, not can better with architecture-integral.Heat exchanger tube and absorber plate adopt laser weld, and cost is higher, so also need improve.

Summary of the invention

The object of the invention is to provide a kind of high insulating effect, and efficient is high, and cost is low, and is not only light but also thin, can be better and the building integrated solar heat collector.

Its solution is: be made into the vacuum glass box body to box body, the vacuum glass box body is made up of glass half box body and glass cover-plate, and glass half box body and glass cover-plate all have the homogeneity support column, and glass half box body leaves pore and aspirating hole; The surface pressure of absorber plate is shaped on semicircular groove, and with binding agent heat exchanger tube being bonded in becomes the plate core in the groove; The lower surface of plate core is made reflecting layer, the selective absorber coatings of upper surface; The plate core is fixed in the middle of the support column of vacuum glass box body, and the upper and lower faces of plate core is a vacuum heat-insulating layer, and the vacuum glass box body is fixed in the metal edge frame.

The plate core be vacuum layer up and down, the vacuum heat-preserving better effects if reduces thermal loss, effectively improves the operating temperature of heat collector, improves the thermal efficiency; The reflecting layer can suppress infra-red radiation, further improves heat-insulating property; Box body is made with glass entirely, and cost is low; Box body has only layer glass, this make heat collector gentlier, thinner, install more conveniently, be more convenient for and architecture-integral.

Description of drawings

Accompanying drawing 1 is the sketch map of collector structure.

Accompanying drawing 2 heat exchanger tubes are the plate core sketch map of fire grate shape.

Accompanying drawing 3 heat exchanger tubes are the plate core sketch map of bow font curved tube.

The specific embodiment

Below in conjunction with the description of drawings specific embodiment of the present invention; Referring to accompanying drawing 1 and accompanying drawing 2,, be made into the heat exchanger tube (3) of a fire grate shape by common stream pipe (5) welding of prior art with multistage copper pipe and two ends; Arranging situation with reference to heat exchanger tube (3) is made one pair of mould; Absorber plate (4) is suppressed into has and the corresponding semi-circular grooves of heat exchanger tube (3), with binding agent (preferably using heat conductive silica gel) heat exchanger tube (3) is bonded in and makes the plate core in the groove, in the lower surface making reflecting layer of plate core; But this reflecting layer wet method is silver-plated, also can apply the space thermal insulation paint.According to the shape and the size of plate core, make mould again, hot melt glass is suppressed into glass half box body (1) and glass cover-plate (2) with homogeneity support column; Glass half box body has pore and aspirating hole, and the plate core is placed the centre of glass half box body (1), fastens glass cover-plate (2); Adopt the sealing by fusing mode to seal, bleed to the glass box body, the sealing aspirating hole through aspirating hole; Box body is placed in the metal edge frame, this has just made solar thermal collector again.Also can be without metal edge frame, four angles are fixed with metal clamps during installation.

Improve (referring to accompanying drawing 3) and be the first time of present technique: be bent into curved tube as heat exchanger tube (3) with a copper pipe; And with two ends stream pipe (5) welding together respectively; Make one pair of mould according to the shape of heat exchanger tube (3) again; Absorber plate (4) is suppressed into has and the corresponding semi-circular grooves of curved tube, with binding agent (the most handy heat conductive silica gel) heat exchanger tube (3) is bonded in and makes the plate core in the groove, the box body that places glass half box body (1) and glass cover-plate (2) to constitute in the plate core.Heat exchanger tube (3) is only with a curved tube, and is simple for production, can reduce cost.

Improve and be the second time of present technique: the buckling surface of glass half box body (1) is a zig zag plane, and the edge of glass cover-plate (2) is corresponding, and buckling surface is bonded and sealed with binding agent.Zig zag plane not only increases adhesive surface but also can form the turning, is not easy gas leakage like this.

The improvement for the third time of present technique is: glass half box body (1) is second box; Change glass cover-plate (2) into first box; The buckling surface of second box and first box is a zig zag plane; The cross section of zig zag plane has multiple shape selective, like stairstepping, convex concave, v shape, U-shaped, waveform, zigzag etc., all at the protection domain of present technique.The zig zag plane of these shapes all can form a plurality of turnings, is bonded and sealed with binding agent, and the turning is many more, and bearing capacity is strong more, difficult more gas leakage.First box can be replaced with second box, that is to say that pore also can be arranged on the side of first box.

The 4th improvement of present technique is: the bottom surface that the space thermal insulation paint is coated in glass half box body (1).This bottom surface refers to the inside or and outside.The coating that this coating obtains can suppress 90% infra-red radiation, and the heat collector insulation is better.

The 5th improvement of present technique is: with glass tube stream pipe (5) connection together in the glass box body, the junction seals with fluid sealant, adopts the sealing by fusing mode to seal between glass tube ozzle and the pore.Whom this mode technology becomes, and is effective.Certainly, also can seal with fluid sealant.

The 6th improvement of present technique is: with plastic-aluminum pipe (comprising plastic tube), the copper pipe of stream pipe (5) connects together in the glass box body, and the junction seals with fluid sealant, and the plastic-aluminum pipe stretches out box body from pore becomes ozzle, adopts the fluid sealant sealing between ozzle and the pore.Seal with fluid sealant between plastic-aluminum pipe (comprising plastic tube) and the glass pore, than more firm between copper pipe and the glass pore with the fluid sealant sealing.

The 7th improvement of present technique is: substitute the copper pipe of stream pipe (5) altogether with plastic-aluminum pipe (comprising plastic tube); Heat exchanger tube (3) is inserted in punching on the plastic-aluminum pipe; Insert mouth with the fluid sealant sealing, the plastic-aluminum pipe stretches out box body from pore becomes ozzle, adopts the fluid sealant sealing between ozzle and the pore.Like this, can reduce cost.

Said fluid sealant also is sealant, on solar cell, uses stable performance for a long time.

Claims

1. solar thermal collector; Constitute by box body and the plate core that is arranged in the box body; Box body is made up of half box body (1) and transparent cover plate (2); The plate core is made up of the heat exchanger tube (3) that is fixed on absorber plate (4) surface, it is characterized in that: be made into the vacuum glass box body to box body, the vacuum glass box body is made up of glass half box body (1) and glass cover-plate (2); Glass half box body (1) and glass cover-plate (2) all have the homogeneity support column; Glass half box body (1) leaves pore and aspirating hole; The surface pressure of absorber plate (4) is shaped on semicircular groove, and with binding agent heat exchanger tube (3) being bonded in becomes the plate core in the groove; The lower surface of plate core is made the reflecting layer; The selective absorber coatings of upper surface; The plate core is fixed in the middle of the support column of vacuum glass box body, and the upper and lower faces of plate core is a vacuum heat-insulating layer, and the vacuum glass box body is fixed in the metal edge frame.

2. heat collector according to claim 1; It is characterized in that: be bent into curved tube as heat exchanger tube (3) with a copper pipe; And, make one pair of mould according to the shape of heat exchanger tube (3) again with respectively stream pipe (5) welding together of two ends, absorber plate (4) is suppressed into has and the corresponding semi-circular grooves of curved tube; With binding agent heat exchanger tube (3) being bonded in becomes the plate core in the groove, the box body that places glass half box body (1) and glass cover-plate (2) to constitute in the plate core.

3. according to claim 1 and the described heat collector of claim 2, it is characterized in that: the buckling surface of glass half box body (1) is a zig zag plane, and the edge of glass cover-plate (2) is corresponding, and buckling surface is bonded and sealed with binding agent.

4. according to claim 1 and the described heat collector of claim 2; It is characterized in that: glass half box body (1) is second box; Change glass cover-plate (2) into first box, the buckling surface of second box and first box is a zig zag plane, and the cross section of zig zag plane has multiple shape selective.

5. according to claim 1 and the described heat collector of claim 2, it is characterized in that: the bottom surface that the space thermal insulation paint is coated in glass half box body (1).

6. according to claim 1 and the described heat collector of claim 2, it is characterized in that: with glass tube stream pipe (5) connection together in the glass box body, the junction seals with fluid sealant, adopts the sealing by fusing mode to seal between glass tube ozzle and the pore.

7. according to claim 1 and the described heat collector of claim 2; It is characterized in that: use the plastic-aluminum pipe, the copper pipe of stream pipe (5) connects together in the glass box body, and the junction seals with fluid sealant; The plastic-aluminum pipe stretches out box body from pore becomes ozzle, adopts the fluid sealant sealing between ozzle and the pore.

8. according to claim 1 and the described heat collector of claim 2; It is characterized in that: substitute the copper pipe of stream pipe (5) altogether with the plastic-aluminum pipe; Heat exchanger tube (3) is inserted in punching on the plastic-aluminum pipe; Insert mouth with the fluid sealant sealing, the plastic-aluminum pipe stretches out box body from pore becomes ozzle, adopts the fluid sealant sealing between ozzle and the pore.