CN2354077Y

CN2354077Y - All-glass heat-pipe type vacuum solar heat-collecting pipe

Info

Publication number: CN2354077Y
Application number: CN98246355U
Authority: CN
Inventors: 黄旭
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-10
Filing date: 1998-11-10
Publication date: 1999-12-15
Anticipated expiration: 2008-11-10

Abstract

The utility model discloses a full glass heat pipe type vacuum solar heat collecting pipe. Two concentric circular pipes are made of glass. An elastic support card with gas eliminating agent is arranged between an outer pipe and the inner pipe. An absorption coat is embedded on the outer surface of the inner pipe. The outer pipe and the inner pipe are glass pipes whose two ends are sealed. The sealing opening of the outer pipe is positioned below the upper end opening of the inner pipe. The full glass heat pipe type vacuum solar heat collecting pipe can be used as a heat collecting material of various solar energy water heaters, and the production cost of the full glass heat pipe type vacuum solar heat collecting pipe is low. The utility model is the full glass heat pipe type vacuum solar heat collecting pipe having high heat transfer efficiency and good effect.

Description

All-glass heat tube type evacuated solar collector tube

What the utility model related to is a kind of vacuum solar collector tubes, especially adopts all-glass heat tube type evacuated solar collector tube.

At present, diversified solar energy heat collection pipe has appearred on the market, if any all-glass vacuum tube, metal heat pipe type vacuum pipe, metal heat pipe-vacuum tube or the like.All-glass vacuum tube since in the pipe water many and can't all take out, cause rate of thermal water utilization low, when a certain pipe damaged, whole system must be out of service; The characteristics of metal heat pipe type vacuum pipe are to start soon, pressure-bearing is high, and the working time is long, good seal performance, but because the sealing-in difficulty between the glass of metal heat pipe and outer tube makes production cost improve; Its thermal efficiency of metal heat pipe-vacuum tube is suitable with all-glass vacuum tube, but manufacturing cost doubles.Generally speaking, existing solar energy heat collection pipe exists the cost height, poor sealing performance, the low shortcoming of device rate of thermal water utilization.

The purpose of this utility model is to provide that a kind of cost is low, the thermal efficiency is high, the all-glass heat tube type evacuated solar collector tube of good seal performance.

The purpose of this utility model is to realize by following technical scheme, all-glass heat tube type evacuated solar collector tube is two concentric pipes of closed at both ends being made by glass, the spring that the band getter is housed between outer tube and the interior pipe props up card, interior Guan Weiyi root glass heat pipe, be coated with absorber coatings on its outer surface, outer tube and interior pipe are the glass tube of sealing, the close mouth of outer tube is in below the upper port of interior pipe, be equipped with on the inner surface of interior pipe and use metal silk screen, the silk screen of the inner surface of interior pipe is consistent with the position that the absorber coatings of outer surface is arranged, this is to gasify rapidly in order to manage the heat that absorbs in better being convenient to, make heat spread out of by heat release section, interior pipe is an endotherm section with the repeated segments of outer tube, interior pipe stretches out one section of outer tube and is heat release section, be vacuum state in the interior pipe of interlayer and sealing between interior pipe and the outer tube, liquid thermal conductivity working medium is housed in the interior pipe.

All-glass heat tube type evacuated solar collector tube is to adopt all-glass construction, utilize the housing of the interior pipe of vacuum tube as heat pipe, reduced the heat transfer link, improve the thermal efficiency, because the inclination angle the during work of this kind heat pipe belongs to gravity type heat pipe greater than 10 °, withdrawing fluid working medium flows to heat pipe bottom rapidly, in the endotherm section of heat pipe the time of staying very short, so in interior pipe, install the metal twine additional, because its capillarity, can be detained backflow working medium, prolong working medium, and working medium can circumferentially evenly distribute along pipe in the endotherm section time of staying, do not dried up in the top of pipe, in addition, in the heat release section of heat pipe, do not add metal net core, can hinder heat so effectively and produce refluence by metal net core, adopt the thermal-collecting tube of this structure, a wherein a certain pipe is impaired, does not influence whole system work.

Good effect of the present utility model compared with prior art is that following characteristics are arranged, because the heat pipe-type thermal-collecting tube that adopts full glass to make, have excellent sealing effect and reduced production cost, be glass heat pipe because of interior pipe again, the outer surface of the endotherm section of interior pipe scribbles absorber coatings, and inner surface is provided with silk screen, by the effect of heat-conducting work medium, the heat that produces is spread out of by heat release section, makes the thermal efficiency improve.

By accompanying drawing the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

As can be seen from Figure 1, the full glass heat pipe type solar collector pipe can divide two parts on function, be endotherm section, heat release section, on structure, two concentric pipes are outer tube 1 and interior pipe 2, interior pipe 2 inserts in the outer tubes 1, the sealing of outer tube 1 is in more than the middle part of interior pipe 2, form vacuum state between outer tube 1 and the interior pipe 2, the spring that is provided with the band getter between the bottom of interior pipe 2 and outer tube 1 props up card 3 and is supporting the interior interior pipe 2 of outer tube, the vacuum state that between outer tube and interior pipe, forms, and one section is endotherm section, outer surface at the interior pipe of endotherm section scribbles one deck absorber coatings 4, inner surface is provided with silk screen 5, stretches out to manage in a section outside the outer tube to be heat release section, by heat release section heat is emitted by the effect generation heat of coating and silk screen and heat-conducting work medium 6 at the interior pipe of endotherm section.

Claims

1, all-glass heat tube type evacuated solar collector tube, two concentric pipes making by glass, the elasticity that the band getter is housed between outer tube (1) and the interior pipe (2) is propped up card (3), the outer surface of interior pipe (2) is coated with absorber coatings (4), it is characterized in that: outer tube (1) is the glass tube of closed at both ends with interior pipe (2), and the sealing part of outer tube is on inner pipe below the port.

2, according to the described all-glass heat tube type evacuated solar collector tube of claim 1, it is characterized in that:

Inner surface at interior pipe (2) is equipped with metal silk screen (5).

3. according to the described all-glass heat tube type evacuated solar collector tube of claim 2, it is characterized in that:

The silk screen (5) of the inner surface of interior pipe (2) is consistent with the position that the absorber coatings (4) of outer surface is arranged.

4, according to the described all-glass heat tube type evacuated solar collector tube of claim 1, it is characterized in that:

Be vacuum state in the pipe in interlayer between interior pipe (2) and the outer tube (1) and the sealing, liquid thermal conductivity working medium (6) is housed in the interior pipe (2).