CN211120034U

CN211120034U - High-efficient solar vacuum tube

Info

Publication number: CN211120034U
Application number: CN201922037460.2U
Authority: CN
Inventors: 祁书行; 祁书盼
Original assignee: Jiahebao Tianjin Energy Saving And Environmental Protection Technology Co ltd
Current assignee: Jiahebao Tianjin Energy Saving And Environmental Protection Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-28
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a high-efficiency solar vacuum tube, firstly, when the vacuum tube is manufactured, the open ends of an inner glass tube and an outer glass tube are fused together, a heat preservation cover and a sealing cover are installed together through a spring, then a U-shaped tube is installed on the heat preservation cover, a heat absorption sheet is evenly installed at the lower part of the U-shaped tube, the heat preservation cover is installed in the upper end opening of the inner glass tube, when the vacuum tube starts to work, solar light irradiates the vacuum tube, sunlight irradiates the heat absorption coating through the outer glass tube to generate heat through the heat absorption coating, because the middle parts of the inner glass tube and the outer glass tube are vacuum, heat is transmitted into the inner glass tube to heat air in the inner glass tube according to a heat transmission rule, medium with lower temperature flows into the U-shaped tube from one end of the U-shaped tube and penetrates into the U-shaped tube of the inner glass, and heat absorbing sheets are equidistantly distributed on the pipe wall of the U pipe to accelerate the absorption of the medium to heat energy.

Description

High-efficient solar vacuum tube

Technical Field

The utility model relates to a solar energy utilization field specifically is a high-efficient solar vacuum tube.

Background

The vacuum tube is the core of the solar water heater, the structure of the vacuum tube is like an elongated thermos flask liner, and vacuum is arranged between the inner layer and the outer layer. The surface of the inner glass tube is coated with a spectrum selective absorption coating by utilizing a special process for absorbing solar radiation energy to the maximum extent, and a solar vacuum tube heat collector is low in initial investment, so that the solar vacuum tube heat collector is widely used in a solar water heater and a solar water heating system, but the solar vacuum tube heat collector has defects.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-efficient solar vacuum tube to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high-efficient solar vacuum tube, includes outer glass pipe and interior glass pipe, outer glass pipe is connected with interior glass pipe upper end, is the vacuum in the middle of outer glass pipe and the interior glass pipe, and outer glass pipe lower extreme is equipped with the receipts and seals the mouth, and interior glass pipe surface is equipped with the heat absorption coating, and heat preservation lid is installed to interior glass pipe upper end opening part, installs the U-shaped pipe in the middle of the heat preservation lid, and the U-shaped pipe lower extreme stretches into in the inside cavity of interior glass pipe and U-shaped pipe upper end passes the heat preservation lid and stretches out.

As a further aspect of the present invention: an inner sinking groove is arranged outside the closing opening.

As a further aspect of the present invention: the pipe wall of the inner glass pipe is of a sine fluctuation structure.

As a further proposal of the utility model, two L-shaped air holes are symmetrically arranged in the heat preservation cover, the lower end of the heat preservation cover is connected with one end of a spring, and the other end of the spring is connected with a sealing cover.

As a further aspect of the present invention: the lower end of the U-shaped pipe is equidistantly distributed with heat absorbing sheets, and a fluid medium is arranged in the U-shaped pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the U-tube design eliminates the need for heated water to flow into the vacuum tube, thereby eliminating the need for cleaning the interior of the vacuum tube.

2. An inner sink groove is formed outside the sealing opening, so that the sealing opening is well protected, and the damage of a vacuum structure is reduced.

3. The sine fluctuation structure of the inner glass tube enables the heat absorption area of the heat absorption coating to be larger and the heat absorption efficiency to be higher.

4. The spring, the sealing cover and the air holes in the heat-insulating cover play a role in balancing pressure intensity when air is expanded with heat and contracted with cold, and pipe explosion is avoided.

5. The heat transfer speed of the heat absorption sheet at the lower end of the U-shaped pipe is higher.

Drawings

Fig. 1 is a schematic structural diagram of a high-efficiency solar vacuum tube.

Fig. 2 is a schematic structural diagram of a cross-sectional view of a high-efficiency solar vacuum tube.

Fig. 3 is a schematic structural diagram of a top view of a high-efficiency solar vacuum tube.

The drawing is marked with 1, an outer glass tube, 2, an inner sink groove, 3, a sealing opening, 4, a heat preservation cover, 5, a U-shaped tube, 6 and L-shaped air holes, 7, a heat absorption coating, 8, an inner glass tube, 9, a sealing cover, 10, a spring, 11 and a heat absorption sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, in an embodiment of the present invention, a high-efficiency solar vacuum tube, includes an outer glass tube 1 and an inner glass tube 8, the upper end of the outer glass tube 1 is connected to the upper end of the inner glass tube 8, the middle of the outer glass tube 1 and the inner glass tube 8 is vacuum, the lower end of the outer glass tube 1 is provided with a sealing opening 3, the sealing opening 3 is externally provided with an inner sinking groove 2, the wall of the inner glass tube 8 is of a sine fluctuation structure, the outer surface of the inner glass tube 8 is provided with a heat absorption coating 7, the heat absorption coating 7 is black nickel, the opening at the upper end of the inner glass tube 8 is provided with a heat insulation cover 4, two L-shaped air vents 6 are symmetrically arranged in the heat insulation cover 4, the lower end of the heat insulation cover 4 is connected to one end of a spring 10, the other end of the spring 10 is connected to a sealing cover 9, a U-shaped tube 5 is arranged in the middle of the heat insulation cover 4, the lower end of the U-.

The utility model discloses a theory of operation is: firstly, when a vacuum tube is manufactured, the tube wall of an inner glass tube 8 is processed into a sine wave structure, a heat absorbing coating 7 is plated on the outer wall of the inner glass tube, the spherical concave-convex formed by the sine wave structure of the tube wall of the inner glass tube 8 increases the area of the heat absorbing coating 7 and can absorb more solar energy, when an outer glass tube 1 is processed, an inner sinking groove 2 is firstly added at the bottom, then a sealing cover 3 is stretched out, the sealing cover 3 is protected by the inner sinking groove 2, then the inner glass tube 8 and the outer glass tube 1 are fused together at the opening end, then the sealing cover 3 is vacuumized and sealed, a heat insulating cover 4 and a sealing cover 9 are installed together through a spring 10, then the U-shaped tube 5 is installed on the heat insulating cover, a heat absorbing sheet 11 is evenly installed at the lower part of the U-shaped tube 5, the heat insulating cover 4 is installed in the opening at the upper end of the inner glass, sunlight irradiates the heat absorption coating 7 through the outer glass tube 1 to generate heat through the heat absorption coating 7, because the middles of the inner glass tube 8 and the outer glass tube 1 are vacuum, the heat is transferred into the inner glass tube 8 to heat air in the inner glass tube according to a heat transfer rule, a medium with lower temperature flows into the U-shaped tube from one end of the U-shaped tube and absorbs the heat in the tube through the U-shaped tube 5 penetrating into the inner glass tube 8, the medium flows out from the other end of the U-shaped tube to take away the heat to form circulation, and meanwhile, heat absorption sheets 11 are distributed on the tube wall of the U-shaped tube 5 at equal intervals to accelerate the.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A high-efficient solar vacuum tube, includes outer glass tube (1) and interior glass tube (8), its characterized in that: the outer glass pipe (1) is connected with the upper end of the inner glass pipe (8), the middle of the outer glass pipe (1) and the middle of the inner glass pipe (8) are vacuum, the lower end of the outer glass pipe (1) is provided with a sealing opening (3), the outer surface of the inner glass pipe (8) is provided with a heat absorption coating (7), the upper end opening of the inner glass pipe (8) is provided with a heat insulation cover (4), a U-shaped pipe (5) is arranged in the middle of the heat insulation cover (4), the lower end of the U-shaped pipe (5) stretches into the inner cavity of the inner glass pipe (8), and the upper end of the U-shaped pipe (5) penetrates through the.

2. A high efficiency solar vacuum tube as claimed in claim 1, wherein: an inner sink groove (2) is arranged outside the closing opening (3).

3. A high efficiency solar vacuum tube as claimed in claim 1, wherein: the wall of the inner glass tube (8) is of a sine fluctuation structure.

4. The high-efficiency solar vacuum tube according to claim 1, characterized in that two L-shaped air holes (6) are symmetrically formed in the heat-insulating cover (4), the lower end of the heat-insulating cover (4) is connected with one end of a spring (10), and the other end of the spring (10) is connected with a sealing cover (9).

5. A high efficiency solar vacuum tube as claimed in claim 1, wherein: the heat absorbing sheets (11) are distributed at the lower end of the U-shaped pipe (5) at equal intervals, and a fluid medium is arranged inside the U-shaped pipe (5).