CN200972271Y - Whole glass double-vacuum heat collecting pipe - Google Patents

Abstract

An improved all-glass double-vacuum heat collecting tube includes an internal and an external glass tube. The external glass tube covers the internal glass tube, with space left in between. One terminal of the internal glass tube extends outside from one terminal of the external glass tube and connects to the other terminal. The heat-conductive working medium is filled inside the internal glass tube and a heat absorption layer is attached outside. The internal and external glass tubes are all vacuum and are characterized in that a heat-conductive means is arranged inside the part of the internal glass tube that is covered within the external glass tube. The utility model has the advantages in that the device takes advantage of the solar energy obtained from heat-conductive elements and transfers the solar energy to the heat-conductive elements on the bottom of the internal glass tube. And, because the overall heat-conductive element can absorb solar energy, the heat transferred to the heat-conductive element is much more than that transferred to the internal glass tube, thereby, greatly improving the heat collecting efficiency of the heat collecting tube.

Description

The two vacuum heat collection pipes of full glass

Technical field

The utility model relates to the device that utilizes solar energy heating, specifically is the solar energy heat collection pipe that a kind of bilayer that adopts glass to make vacuumizes.

Background technology

The structure of the two vacuum heat collection pipes of existing full glass mainly comprises glass inner tube and glass outer tube, the glass outer tube sleeve is outside glass inner tube, leave the gap between the two, one end of glass inner tube passes an end and the mutual sealed knot of described glass outer tube, be filled with heat-conducting work medium in glass inner tube, the outside is with heat-sink shell; All vacuumize in described glass inner tube and the glass outer tube.The deficiency of this all-glass vacuum thermal-collecting tube is: because heat-conducting work medium seldom, the contact area of glass inner tube and heat-conducting work medium is very little, because the solar thermal energy that the most of area of glass inner tube is absorbed can not directly conduct to heat-conducting work medium, so directly conduct to the heat of heat-conducting work medium limited by glass inner tube, this has just reduced the vaporization efficency of working medium, and then has influenced the collecting efficiency of thermal-collecting tube.

Summary of the invention

The purpose of this utility model provides the two vacuum heat collection pipes of a kind of improved full glass, with solve that prior art exists by glass inner tube directly conduction give the heat of heat-conducting work medium limited and reduced the problem of the vaporization efficency of working medium.

For finishing the foregoing invention purpose, the technical scheme that the utility model provides is: comprise glass inner tube and glass outer tube, the glass outer tube sleeve is outside glass inner tube, leave the gap between the two, one end of glass inner tube passes an end and the mutual sealed knot of described glass outer tube, be filled with heat-conducting work medium in glass inner tube, the outside is with heat-sink shell; All vacuumize in described glass inner tube and the glass outer tube, it is characterized in that: the inside of the part in described glass inner tube is inserted the glass outer tube is provided with heat-conducting piece.

Described heat-conducting piece is the inboard of cylindric and close glass inner tube.

Described heat-conducting piece is cylindric with the bottom also, and inboard and bottom near glass inner tube are provided with the hole in this bottom.

Between described glass inner tube and glass outer tube, be provided with supporting mechanism.

The utility model has the advantages that: the solar thermal energy that utilizes heat-conducting piece to absorb conducts the heat-conducting work medium to the glass inner tube bottom, because heat-conducting piece integral body all can be drawn solar heat, its conduction gives the heat of heat-conducting work medium much larger than the heat of being passed to by glass inner tube, so can obviously improve the collecting efficiency of thermal-collecting tube.

Description of drawings

Fig. 1 is a general structure cross-sectional schematic of the present utility model;

Fig. 2 is the structure chart (the A-A cutaway view of Fig. 1) of an embodiment of the utility model heat-conducting piece;

Fig. 3 is the structure chart (the A-A cutaway view of Fig. 1) of another embodiment of heat-conducting piece of the present utility model.

The specific embodiment

Referring to Fig. 1～Fig. 3, the utility model comprises glass inner tube 1 and glass outer tube 2, and glass outer tube 2 is enclosed within outside the glass inner tube 1, leaves the gap between the two.One end of glass inner tube 1 passes the upper end and the mutual sealed knot of described glass outer tube 2, is filled with heat-conducting work medium 6 in glass inner tube 1, has heat-sink shell 3 in the outside of the glass inner tube 1 that is positioned at glass outer tube 2 inside.All vacuumize in described glass inner tube 1 and the glass outer tube 2.The inside of inserting the part in the glass outer tube in described glass inner tube 1 is provided with heat-conducting piece 5.

Described heat-conducting piece 5 is the inboard (referring to Fig. 2) of cylindric and close glass inner tube 1, can adopt sheet metal to be rolled into tubular and place glass inner tube 1 inside, relies on the elastic restoring force of sheet metal to be close to glass inner tube 1 inboard.Also the metal tube of available thin-walled cuts several otch with its one or both ends, relies on the distortion of incision and the inboard that elasticity is adjacent to glass inner tube 1.

Described heat-conducting piece 5 is cylindric with bottom 7 also, and inboard and bottom near glass inner tube 1 are provided with hole (referring to Fig. 3) in the bottom of this cylinder.Bottom 7 can cut out several breach by the lower end at cylinder and form to center curvature.The bottom of the structure of heat-conducting piece 5 these embodiment can extend into the bottommost of glass inner tube 1, and bigger in the contact area of heat-conducting work medium 6, vaporization effect is better.

Also can between described glass inner tube 1 and glass outer tube 2, be provided with supporting mechanism 4, fracture to prevent glass inner tube 1.

Claims (4)

1, the two vacuum heat collection pipes of a kind of improved full glass, comprise glass inner tube and glass outer tube, the glass outer tube sleeve is outside glass inner tube, leave the gap between the two, one end of glass inner tube passes an end and the mutual sealed knot of described glass outer tube, be filled with heat-conducting work medium in glass inner tube, the outside is with heat-sink shell; All vacuumize in described glass inner tube and the glass outer tube, it is characterized in that: the inside of the part in described glass inner tube is inserted the glass outer tube is provided with heat-conducting piece.

2, the two vacuum heat collection pipes of improved full glass according to claim 1, it is characterized in that: described heat-conducting piece is the inboard of cylindric and close glass inner tube.

3, the two vacuum heat collection pipes of improved full glass according to claim 1, it is characterized in that: described heat-conducting piece is the inboard of cylindric and close glass inner tube, is provided with bottom with holes at this cylindric heat-conducting piece.

4, the two vacuum heat collection pipes of improved full glass according to claim 1 is characterized in that:

Between described glass inner tube and glass outer tube, be provided with supporting mechanism.

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