CN201340112Y - Thermal-collecting tube and solar water heater - Google Patents
Thermal-collecting tube and solar water heater Download PDFInfo
- Publication number
- CN201340112Y CN201340112Y CNU2008202377619U CN200820237761U CN201340112Y CN 201340112 Y CN201340112 Y CN 201340112Y CN U2008202377619 U CNU2008202377619 U CN U2008202377619U CN 200820237761 U CN200820237761 U CN 200820237761U CN 201340112 Y CN201340112 Y CN 201340112Y
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- China
- Prior art keywords
- thermal
- metal tube
- tube
- collecting tube
- openend
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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
- Y02E10/44—Heat exchange systems
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model aims to provide a thermal-collecting tube with high heat transfer efficiency and operation under pressure, which comprises a vacuum thermal-collecting tube which consists of a metal tube whose one end is open, wherein the closed end of the metal tube is extended into the vacuum thermal-collecting tube, and the open end of the metal tube is extended out of the vacuum thermal-collecting tube, and the inner wall of the vacuum thermal-collecting tube is contacted with the outer wall of the metal tube.
Description
Technical field
The present invention relates to a kind of thermal-collecting tube and solar water heater.
Background technology
Existing thermal-collecting tube mainly contains heat collector tube pipe and all-glass vacuum thermal-collecting tube.Though heat collector tube pipe heat conductivility is good, the heat transfer between from the vacuum tube to the heat pipe adopts the aluminium fin to conduct heat, and thermal resistance is bigger, and heat pipe condensation end area is generally less in addition, and heat transfer efficiency is lower behind the scaling.All-glass vacuum thermal-collecting tube can not bearing operation.
Summary of the invention
The purpose of this invention is to provide a kind of heat transfer efficiency height, can bearing operation thermal-collecting tube.
This thermal-collecting tube comprises vacuum heat collection pipe, and it also comprises the metal tube of an end opening, and the blind end of metal tube extend in the vacuum heat collection pipe, and the openend of metal tube stretches out outside the vacuum heat collection pipe, and the vacuum heat-collecting inside pipe wall contacts with the metal tube outer wall.
As improvement, the openend of metal tube is provided with and is used for the connecting portion that links to each other with tank seal.
As improvement, the material of metal tube is that stainless steel, copper, aluminium or other metal or matrix are the enamel of mild steel, and preferred stainless steel, matrix are the enamel of mild steel.
Compare its energy bearing operation, pressure-bearing water outlet, bath comfort with all-glass vacuum thermal-collecting tube.In addition, water-tight behind the vacuum heat-collecting tracheal rupture among the present invention.
Compare with the heat collector tube pipe: 1, reliability height of the present invention, longer service life.(efficient of heat pipe is subjected to the influence of its vacuum, and after vacuum descended, efficient can reduce.Simultaneously it can not resemble and keep its long-term vacuum by getter the all-glass vacuum thermal-collecting tube).2, heat transfer efficiency can be higher.Though the heat pipe for thermal conductivity performance is good, the heat transfer between from the vacuum tube to the heat pipe adopts the aluminium fin to conduct heat, and thermal resistance is bigger, and heat pipe condensation end area is generally less in addition, and heat transfer efficiency is lower behind the scaling.Directly contact with the metal tube outer wall and the present invention is the vacuum glass inside pipe wall, heat transfer resistance is little.Inner wall area is much bigger more than the heat pipe condensation end, even fouling, influence is also little to conducting heat.3, heat resistant material is generally copper, and inner water tank is generally stainless steel or mild steel enamel, can produce electrochemical corrosion between copper and the steel, shortens water tank service life.And the metal tube among the present invention is generally stainless steel or mild steel enamel.Can not produce electrochemical corrosion between steel and the steel.4, stainless steel or mild steel enamel cost are more cheap than copper.So thermal-collecting tube cost of the present invention is low.
The present invention provides a kind of close-coupled solar water heater simultaneously, comprises water tank, above-mentioned thermal-collecting tube, and the metal tube openend in the thermal-collecting tube is connected with tank seal.
Can be to be threaded or bayonet socket such as is connected at syndeton between metal tube openend and the water tank.
The present invention provides a kind of separated type solar water heater simultaneously, comprises the union pipe that water tank, two ends communicate with water tank, above-mentioned thermal-collecting tube, and the metal tube openend in the thermal-collecting tube is connected with union pipe sidewall sealing joint.
Described close-coupled solar water heater is different fully with prior solar water heater with the separated type solar water heater, it neither resembles adopts adopting heat pipes for heat transfer the heat pipe solar energy water heater, do not resemble yet and adopt the forced circulation mode to conduct heat the U type tube solar water heater, but rely on hot and cold water density difference, mode with free convection is imported heat into water tank by thermal-collecting tube, and simultaneously it has overcome the shortcoming that direct insertion solar water heater can not pressure-bearing again.
Compare with direct insertion solar water heater: 1, its energy bearing operation, pressure-bearing water outlet, bath comfort.2, it is water-tight after vacuum tube breaks.
Compare with heat pipe solar energy water heater:
1, reliability height, longer service life.(efficient of heat pipe is subjected to the influence of its vacuum, and after vacuum descended, efficient can reduce.Simultaneously it can not resemble again and keep its long-term vacuum by getter the vacuum tube).
2, heat transfer efficiency can be higher.Though (the heat pipe for thermal conductivity performance is good, and the heat transfer between from the vacuum tube to the heat pipe adopts the aluminium fin to conduct heat, and thermal resistance is bigger, and heat pipe condensation end area is generally less, and heat transfer efficiency is lower behind the scaling in addition.Directly contact with the metal tube outer wall and the present invention is the vacuum tube inwall, heat transfer resistance is little.Inner wall area is much bigger more than the heat pipe condensation end, even fouling, influence is also little to conducting heat.
3, heat resistant material is generally copper, and inner water tank is generally stainless steel or mild steel enamel, can produce electrochemical corrosion between copper and the steel, shortens water tank service life.And the metal tube among the present invention is generally stainless steel or mild steel enamel.Can not produce electrochemical corrosion between steel and the steel.
4, stainless steel or mild steel enamel cost are more cheap than copper, and cost is low.
Compare with U type tube solar water heater:
1, lacks than forced circulation by Natural Circulation and use a circulating pump, except that reducing cost, also increased the reliability of system greatly.
2, U type bore carefully is easy to be stopped up by incrustation scale.Metal tube of the present invention is thick, can be not blocked.
3, heat transfer efficiency height.
4, can not produce electrochemical corrosion with water tank.
5, cost is low.
Description of drawings
Fig. 1 is the schematic diagram of thermal-collecting tube.
Fig. 2 is the schematic diagram of close-coupled solar water heater.
Fig. 3 is thermal-collecting tube among Fig. 2 and first kind of syndeton schematic diagram of water tank.
Fig. 4 is second kind of syndeton schematic diagram of thermal-collecting tube and water tank.
Fig. 5 is the third syndeton schematic diagram of thermal-collecting tube and water tank.
Fig. 6 is the 4th a kind of syndeton schematic diagram of thermal-collecting tube and water tank.
Fig. 7 is the schematic diagram of separated type solar water heater.
The specific embodiment
Referring to thermal-collecting tube shown in Figure 1 11, comprise the metal tube 1 of vacuum heat collection pipe 2, one end openings, the blind end of metal tube extend in the vacuum heat collection pipe, and the openend of metal tube stretches out outside the vacuum heat collection pipe, and the vacuum heat-collecting inside pipe wall contacts with the metal tube outer wall.The periphery of metal tube openend is provided with and is used for the external screw thread 12 that links to each other with tank seal.The material of metal tube is that stainless steel or matrix are the enamel (mild steel enamel) of mild steel.Mild steel enamel belongs to current material.
Referring to close-coupled solar water heater shown in Fig. 2,3, comprise water tank 13, thermal-collecting tube 11 described in the embodiment 1.The inner bag 3 of water tank is provided with the internal thread that matches with external screw thread 12.Between the end of the outstanding end of inner bag and metal tube openend, silica gel sealing ring 4 is set.Metal tube openend in the thermal-collecting tube and water tank form by screw thread and are tightly connected.
Fig. 4 is second kind of syndeton schematic diagram of thermal-collecting tube and water tank.The periphery of metal tube openend is provided with and is used for the internal thread 14 that links to each other with tank seal.The inner bag 3 of water tank is provided with the external screw thread that matches with internal thread 14.Between the outstanding end of inner bag and metal tube openend, silica gel sealing ring 4 is set.Metal tube openend in the thermal-collecting tube and water tank form by screw thread and are tightly connected.
Fig. 5 is the third syndeton schematic diagram of thermal-collecting tube and water tank.The periphery of metal tube openend has flange 15, and internal diameter is slightly larger than the locking nut 5 of flange external diameter and is connected with external screw thread on the water tank protuberance, between the outstanding end of inner bag and flange silica gel sealing ring 4 is set.Make metal tube openend and water tank form is tightly connected by being threaded.
Fig. 6 is the bayonet socket syndeton schematic diagram of thermal-collecting tube and water tank.The syndeton of this structure and bayonet socket lamp and lamp socket is identical.On the jag of inner bag, have the helicla flute 16 of symmetry, the outstanding pin 17 that snaps in is set on the periphery of metal tube openend.Between the outstanding end of inner bag and metal tube openend, silica gel sealing ring 4 is set.Screw in helicla flute 16 by snapping in pin 17, and make thermal-collecting tube be pressed on the inner bag, formation is tightly connected.
Referring to separated type solar water heater shown in Figure 7, comprise water tank 13, an end of union pipe 18 communicates with water tank bottom, and the other end extend into water tank inside.Metal tube openend in many thermal-collecting tubes 11 is communicated with union pipe sidewall sealing joint.
The various syndetons of above-mentioned thermal-collecting tube and water tank are being connected applicable to thermal-collecting tube and union pipe also.
Claims (7)
1. thermal-collecting tube comprises vacuum heat collection pipe, it is characterized in that: further comprising the metal tube of an end opening, and the blind end of metal tube extend in the vacuum heat collection pipe, and the openend of metal tube stretches out outside the vacuum heat collection pipe, and the vacuum heat-collecting inside pipe wall contacts with the metal tube outer wall.
2. thermal-collecting tube according to claim 1 is characterized in that: the openend of metal tube is provided with and is used for the connecting portion that links to each other with tank seal.
3. thermal-collecting tube according to claim 1 is characterized in that: the material of metal tube is that stainless steel, copper, aluminium or matrix are the enamel of mild steel.
4. the close-coupled solar water heater comprises water tank, it is characterized in that: further comprising the described thermal-collecting tube of claim 1, and the metal tube openend in the thermal-collecting tube is connected with tank seal.
5. close-coupled solar water heater according to claim 4 is characterized in that: between metal tube openend and the water tank is to be threaded.
6. close-coupled solar water heater according to claim 4 is characterized in that: between metal tube openend and the water tank is that bayonet socket is connected.
7. the separated type solar water heater comprises the union pipe that water tank, two ends communicate with water tank, it is characterized in that: further comprising the described thermal-collecting tube of claim 1, and the metal tube openend in the thermal-collecting tube is connected with union pipe sidewall sealing joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202377619U CN201340112Y (en) | 2008-12-26 | 2008-12-26 | Thermal-collecting tube and solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202377619U CN201340112Y (en) | 2008-12-26 | 2008-12-26 | Thermal-collecting tube and solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340112Y true CN201340112Y (en) | 2009-11-04 |
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ID=41235656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202377619U Expired - Fee Related CN201340112Y (en) | 2008-12-26 | 2008-12-26 | Thermal-collecting tube and solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340112Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012019552A1 (en) * | 2010-08-11 | 2012-02-16 | Wang Ketao | Heat exchange tube apparatus inside solar thermal collector tube |
| CN102748883A (en) * | 2012-07-12 | 2012-10-24 | 浙江宇迪新能源有限公司 | Double-vacuum superconducting pipe |
-
2008
- 2008-12-26 CN CNU2008202377619U patent/CN201340112Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012019552A1 (en) * | 2010-08-11 | 2012-02-16 | Wang Ketao | Heat exchange tube apparatus inside solar thermal collector tube |
| CN102748883A (en) * | 2012-07-12 | 2012-10-24 | 浙江宇迪新能源有限公司 | Double-vacuum superconducting pipe |
| CN102748883B (en) * | 2012-07-12 | 2015-12-02 | 浙江宇迪新能源有限公司 | Two vacuum superconductivity tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20111226 |