CN203405011U - Heat collecting tube - Google Patents
Heat collecting tube Download PDFInfo
- Publication number
- CN203405011U CN203405011U CN201320440596.8U CN201320440596U CN203405011U CN 203405011 U CN203405011 U CN 203405011U CN 201320440596 U CN201320440596 U CN 201320440596U CN 203405011 U CN203405011 U CN 203405011U
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- China
- Prior art keywords
- straight tube
- tube
- metal
- thermal
- metal fin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a heat collecting tube. The heat collecting tube comprises a metal flow channel and a glass vacuum tube, wherein the metal flow channel comprises at least two U-shaped pipelines, the U-shaped pipelines are connected through a first elbow, and are inserted into the glass vacuum tube, each U-shaped pipeline comprises a first straight tube, a second straight tube and a second elbow, each first straight tube is connected with the corresponding second straight tube through the corresponding second elbow, a first metal fin is arranged on each first straight tube, each first metal fin and the corresponding first straight tube are integrally formed, a second metal fin is arranged on each second straight tube, and each second metal fin and the corresponding second straight tube are integrally formed. The heat collecting tube is simple in processing technology, low in cost and good in heat transfer effect.
Description
Technical field
The utility model relates to field of solar energy, especially a kind of thermal-collecting tube.
Background technology
The common full glass double-layer vacuum heat collecting glass tube of the general employing of existing metal-glass vacuum tube solar thermal collector, at the outer wall of inner tube of double-layer glass tube, being coated with solar energy absorbing coating is heat energy by light energy conversion, formation vacuum heat-insulating layer is evacuated between double glazing, U-shaped copper pipe is set in vacuum tube, heat transfer aluminium fin is equipped with in U-shaped pipe outside, thermofin contacts with glass-vacuum tube inner tube wall, interior pipe coating absorbs the heat energy transforming and passes to U-shaped pipe by thermofin, U-shaped pipe passes to inner heat-conducting medium again, this split inner bag heat collector assembling process is complicated, the common defective tightness of contact between U pipe and fin, and easily produce electrochemical corrosion between the two, between U pipe and sprue, adopt welding manner to connect in addition, processing technology is complicated, solder joint easily corrodes, affect the U pipe heat collector life-span, so be necessary existing U-shaped metal tube vacuum tube type solar energy heat collector to improve.
Summary of the invention
Main purpose of the present utility model is, a kind of thermal-collecting tube of new structure is provided, thereby can solve thermofin and U-shaped pipe thermal contact resistance shorter problem in large and service life.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to a kind of thermal-collecting tube the utility model proposes, comprise metal flow passage and glass-vacuum tube, described metal flow passage comprises at least two U-shaped pipelines, two described U-shaped device for cleaning pipelines are crossed the first elbow and are connected, described U-shaped pipeline inserts in described glass-vacuum tube, described U-shaped pipeline comprises the first straight tube, the second straight tube and the second elbow, described the first straight tube is connected with described the second straight tube through described the second elbow, on described the first straight tube, be provided with first metal fin integrated with it, on described the second straight tube, be provided with second metal fin integrated with it.
Preferably, described the first metal fin be shaped as half-cylindrical thin-walled, it matches with described glass evacuated inside pipe wall;
Preferably, described the second metal fin be shaped as half-cylindrical thin-walled, it matches with described glass evacuated inside pipe wall.
Preferably, the cross section of described metal flow passage is oval, circular or semicircle.
Preferably, in described metal flow passage, be axially arranged with rib.
Preferably, described metal flow passage is copper runner or alloy runner.
Preferably, described metal flow passage is aluminium runner, on described aluminium runner, is provided with inertia oxide layer.
Preferably, the material of described the first metal fin and the second metal fin is copper or aluminium or alloy.
Preferably, the area of described the first straight tube and described the first metal fin contact position is greater than 1/3 of described the first straight tube surface area;
Preferably, the area of described the second straight tube and described the second metal fin contact position is greater than 1/3 of described the second straight tube surface area.
By technique scheme, the utility model thermal-collecting tube and heat collector at least have following advantages:
1. described in, U-shaped pipeline and metal fin is one-body molded, has reduced thermal contact resistance, has improved the efficiency of heating surface of thermal-collecting tube and heat collector.
2. the shape of the U-shaped pipeline of thermal-collecting tube described in, and rib setting, extend the service life of this thermal-collecting tube greatly.
3. U-shaped pipeline of the present utility model and metal fin adopt copper material and aluminium material, have further strengthened hot transmission, improve heat transference efficiency.
4. the utility model processing technology is simple, with low cost, and heat-transfer effect is good.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model thermal-collecting tube;
Fig. 2 is the cutaway view of the utility model metal flow passage cross section.
The specific embodiment
For further setting forth the utility model, be to reach technological means and the effect that predetermined utility model object is taked, below in conjunction with accompanying drawing and preferred embodiment, its specific embodiment of thermal-collecting tube, structure, feature and effect thereof to according to the utility model proposes, be described in detail as follows.In following explanation, the not necessarily same embodiment that different " embodiment " or " embodiment " refer to.In addition, special characteristic, structure or the feature in one or more embodiment can be combined by any suitable form.
A kind of thermal-collecting tube as depicted in figs. 1 and 2, comprise metal flow passage and glass-vacuum tube, described metal flow passage comprises two U-shaped pipelines, two described U-shaped device for cleaning pipelines are crossed the first elbow 1 and are connected, described U-shaped pipeline inserts in described glass-vacuum tube, described U-shaped pipeline comprises the first straight tube 21, the second straight tube 22 and the second elbow 2, described the first straight tube 21 is connected with described the second straight tube 22 through described the second elbow 2, on described the first straight tube 21, be provided with first metal fin 31 integrated with it, on described the second straight tube 22, be provided with second metal fin 32 integrated with it.
Described metal flow passage and metal fin one-body molded, whole no-welding-spot, has reduced thermal contact resistance, has improved the efficiency of heating surface of thermal-collecting tube and heat collector.
This thermal-collecting tube is when work, at described vacuum tube, absorb after heat, pass to metal fin, one-body molded due to described metal flow passage and metal fin, heat is when passing to metal fin, moment can pass to metal flow passage, and meanwhile, the liquid in described metal flow passage also can be heated very soon.
Selectively, the number of described U-shaped pipeline can for three, four, more than five or five.
Preferably, described the first metal fin 31 be shaped as half-cylindrical thin-walled, it matches with described glass evacuated inside pipe wall; Described the second metal fin 32 be shaped as half-cylindrical thin-walled, it matches with described glass evacuated inside pipe wall.Described the first metal fin 31 and the second metal fin 32 form a circle, the external diameter of described circle is identical with the internal diameter of described vacuum tube, that is to say, described the first metal fin 31 and described vacuum tube inwall close contact, described the second metal fin 32 also with described vacuum tube inwall close contact.The shape of described the first metal fin 31 and described the second metal fin 32 not only makes its area maximize, to absorb maximum heats within the unit interval, can also reduce and described vacuum tube between thermal contact resistance.
Selectively, between described the first metal fin 31 and the second metal fin 32, can there is a gap.
Preferably, the cross section of metal flow passage is as shown in Figure 2 oval, circular or semicircle.That is to say, the cross-sectional area of described the first straight tube 21 and the second straight tube 22 is oval, circular or semicircle, the cross-sectional area of described the second elbow 2 is oval, circular or semicircle, thereby stress equilibrium when described fluid is flowed in described metal flow passage is distributed in pipeline, can not cause the local explosion of described metallic conduit, increase the service life of described metallic conduit.
Preferably, in described metal flow passage, be axially arranged with rib, for supporting the inwall of described metal flow passage.Be equivalent to increases a dividing plate in the annular inner wall of described metal flow passage, thereby increases the bearing capacity of the wall of described metal flow passage.
Selectively, can only at described straight tube or elbow, be axially arranged with rib.
Preferably, described metal flow passage is copper runner or alloy runner.
Preferably, described metal flow passage is aluminium runner, on described aluminium runner, is provided with inertia oxide layer.Thereby corrosion resistance is strengthened, and the life-span also further extends.
Preferably, the material of described the first metal fin 31 and the second metal fin 32 is copper or aluminium or alloy.
Preferably, the material of described metal fin and described metal flow passage are one-body molded, and material is also identical, thereby has strengthened heat transference efficiency.Described metal be chosen as the good material of thermal conductivity, the selection of described metal, does not affect enforcement of the present utility model.
Preferably, described the first straight tube 21 is greater than 1/3 of described the first straight tube 21 surface areas with the area of described the first metal fin 31 contact positions; Described the second straight tube 22 is greater than 1/3 of described the second straight tube 22 surface areas with the area of described the second metal fin 32 contact positions.Because the contact area of described metal fin and described metal flow passage increases, the fluid being equivalent in described metal flow passage increases with the contact area of heat-conducting medium, thus the further efficiency of heating surface of reinforcement to described fluid.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (8)
1. a thermal-collecting tube, comprises metal flow passage and glass-vacuum tube, it is characterized in that,
Described metal flow passage comprises at least two U-shaped pipelines, and two described U-shaped device for cleaning pipelines are crossed the first elbow and are connected, and described U-shaped pipeline inserts in described glass-vacuum tube,
Described U-shaped pipeline comprises the first straight tube, the second straight tube and the second elbow, and described the first straight tube is connected with described the second straight tube through described the second elbow,
On described the first straight tube, be provided with first metal fin integrated with it,
On described the second straight tube, be provided with second metal fin integrated with it.
2. thermal-collecting tube according to claim 1, is characterized in that,
Described the first metal fin be shaped as half-cylindrical thin-walled, it matches with described glass evacuated inside pipe wall;
Described the second metal fin be shaped as half-cylindrical thin-walled, it matches with described glass evacuated inside pipe wall.
3. thermal-collecting tube according to claim 1, is characterized in that,
The cross section of described metal flow passage is oval, circular or semicircle.
4. thermal-collecting tube according to claim 1, is characterized in that,
In described metal flow passage, be axially arranged with rib.
5. thermal-collecting tube according to claim 1, is characterized in that,
Described metal flow passage is copper runner or alloy runner.
6. thermal-collecting tube according to claim 1, is characterized in that,
Described metal flow passage is aluminium runner, on described aluminium runner, is provided with inertia oxide layer.
7. thermal-collecting tube according to claim 1, is characterized in that,
The material of described the first metal fin and the second metal fin is copper or aluminium or alloy.
8. thermal-collecting tube according to claim 1, is characterized in that,
The area of described the first straight tube and described the first metal fin contact position is greater than 1/3 of described the first straight tube surface area;
The area of described the second straight tube and described the second metal fin contact position is greater than 1/3 of described the second straight tube surface area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320440596.8U CN203405011U (en) | 2013-07-23 | 2013-07-23 | Heat collecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320440596.8U CN203405011U (en) | 2013-07-23 | 2013-07-23 | Heat collecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203405011U true CN203405011U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320440596.8U Expired - Fee Related CN203405011U (en) | 2013-07-23 | 2013-07-23 | Heat collecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203405011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729243A (en) * | 2015-03-30 | 2015-06-24 | 广东都灵新能源科技有限公司 | Solar energy and air energy baking chamber system with energy storage and waste heat recycling functions |
| CN114234455A (en) * | 2021-12-28 | 2022-03-25 | 山东阳晨新能源有限公司 | Stainless steel heat collector |
-
2013
- 2013-07-23 CN CN201320440596.8U patent/CN203405011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729243A (en) * | 2015-03-30 | 2015-06-24 | 广东都灵新能源科技有限公司 | Solar energy and air energy baking chamber system with energy storage and waste heat recycling functions |
| CN114234455A (en) * | 2021-12-28 | 2022-03-25 | 山东阳晨新能源有限公司 | Stainless steel heat collector |
| CN114234455B (en) * | 2021-12-28 | 2023-01-24 | 山东阳晨新能源有限公司 | Stainless steel heat collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20160723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |