CN202792632U - Heat collection device of solar water heater - Google Patents
Heat collection device of solar water heater Download PDFInfo
- Publication number
- CN202792632U CN202792632U CN 201220331222 CN201220331222U CN202792632U CN 202792632 U CN202792632 U CN 202792632U CN 201220331222 CN201220331222 CN 201220331222 CN 201220331222 U CN201220331222 U CN 201220331222U CN 202792632 U CN202792632 U CN 202792632U
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- China
- Prior art keywords
- heat
- water heater
- solar water
- inner tube
- collection pipe
- Prior art date
- 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-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a heat collection device of a solar water heater. The heat collection device of the solar water heater comprises a vacuum heat collecting tube, the vacuum heat collecting tube comprises an inner tube and an outer tube, a vacuum layer is formed between the inner tube and the outer tube, a heat collecting coating membrane is coated on the outer wall of the inner tube, and a heat conducting membrane is coated on the inner wall of the inner tube. Heat is quickly and evenly spread into water in the inner tube by the use of the heat-conducting property of the heat conducting membrane, heat collecting effects are improved, and heat losses are reduced in the using process, and therefore heat preservation effects occur.
Description
Technical field
The utility model relates to a kind of solar water heater, especially the heat collector of solar water heater.
Background technology
Solar water heater can be converted into heat energy to solar energy, and water is heated to high-temperature from low temperature, uses to satisfy the hot water of people in life, production.Solar water heater is divided into vacuum pipe solar water heater and flat solar water heater by version, vacuum pipe solar water heater is main at present, occupy domestic 95% the market share, the electron tubes type domestic solar water heater is comprised of related accessories such as thermal-collecting tube, storage tank and supports.Existing electron tubes type solar energy heating effect is relatively low, its reason is the vacuum tube that full glass is made, although the outer wall of inner tube of vacuum tube scribbles the thermal-arrest plated film, but the glass tube thermal resistance is larger, heat in being delivered to pipe, have in the water time consume, and the inner tube heat insulation effect is relatively poor, and heat is difficult to keep.Certainly, adopt its heat-conductive characteristic of metal inner pipe better, but cost to exceed much relatively.
The utility model content
Problem to be solved in the utility model just provides a kind of heat collector of solar water heater, and is simple in structure, cost is low, and improves the Heat-collecting effect of product.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of heat collector of solar water heater, comprise vacuum heat collection pipe, described vacuum heat collection pipe comprises inner and outer tubes, form vacuum layer between the described inner and outer tubes, described outer wall of inner tube is coated with the thermal-arrest plated film, and described inner tube wall is coated with heat conducting film.
Further, described heat conducting film is copper film or aluminium film.
Further, described heat conducting film thickness is 0.2mm～1.0mm.
Further, described thermal-arrest plated film is gradual change aluminium-nitrogen aluminium plated film or stainless steel aluminium nitride plated film.
Further, described vacuum heat collection pipe is made by Pyrex.
Further, the inner water tank of described inner tube and solar water heater is one-body molded.
Further, the cross section of described vacuum heat collection pipe is circular or oval.
The beneficial effects of the utility model:
1, the utility model is coated with heat conducting film at the inner tube wall of vacuum heat collection pipe, utilizes the heat conductivility of heat conducting film that heat is diffused in the water of inner tube fast, uniformly, improves Heat-collecting effect, and in use reduces thermal loss, plays insulation effect.
2, vacuum heat collection pipe adopts Pyrex to make, and be coated with gradual change aluminium-nitrogen aluminium thermal-arrest plated film at outer wall of inner tube, thermal-collecting tube can stand 400 ℃ high temperature, gradual change aluminium-nitrogen aluminium thermal-arrest plated film is to the selective absorption of sunshine, its absorptance 〉=0.92, it is that heat energy constantly heats the water in the vacuum tube with light energy conversion that transmitting ratio≤0.09 (80 ℃), vacuum heat collection pipe selectively absorb sunshine.
3, need to be connected by screw thread or other connectors between the existing most solar water heater, the inner tube of its vacuum heat collection pipe and inner water tank, sealing property reduces, and assembling is inconvenient; Compared to existing technology, the utility model is one-body molded with the inner water tank of the inner tube of vacuum heat collection pipe and solar water heater, and interior tubular heat can be directly conducted to inner water tank, and the water in can the Fast Heating water tank improves the operating efficiency of water heater.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of the utility model vacuum heat collection pipe;
Fig. 2 is the A place enlarged drawing of Fig. 1;
Fig. 3 is that vacuum heat collection pipe shown in Figure 1 is applied in the structural representation on the solar water heater.
The specific embodiment
The utility model provides a kind of heat collector of solar water heater, comprise vacuum heat collection pipe, described vacuum heat collection pipe comprises inner and outer tubes, forms vacuum layer between the described inner and outer tubes, described outer wall of inner tube is coated with the thermal-arrest plated film, and described inner tube wall is coated with heat conducting film.Utilize the heat conductivility of heat conducting film that heat is diffused in the water of inner tube fast, uniformly, improve Heat-collecting effect, and in use reduce thermal loss, play insulation effect.
Be explained and illustrated below in conjunction with the accompanying drawing of the present embodiment technical scheme to the utility model embodiment, but following embodiment is preferred embodiment of the present utility model only, is not whole.Based on the embodiment in the embodiment, those skilled in the art belong to protection domain of the present utility model at lower other embodiment that obtains of the prerequisite of not making creative work.
With reference to Fig. 1,2, the heat collector of solar water heater comprises vacuum heat collection pipe 1, described vacuum heat collection pipe 1 comprises inner tube 11 and outer tube 10, form vacuum layer 14 between described inner tube 11 and the outer tube 10, described inner tube 11 outer walls are coated with thermal-arrest plated film 12, and described inner tube 11 inwalls are coated with heat conducting film 13.
Above-mentioned heat conducting film 13 is copper film or aluminium film, is preferably the aluminium film, and thermal conductivity factor is high, and cost is relatively low.Heat conducting film 13 thickness are at 0.2mm～1.0mm, such as 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm.
Above-mentioned thermal-arrest plated film 12 is gradual change aluminium-nitrogen aluminium plated film or stainless steel aluminium nitride plated film, and gradual change aluminium-nitrogen aluminium thermal-arrest plated film is to the selective absorption of sunshine, its absorptance 〉=0.92, transmitting ratio≤0.09 (80 ℃).When plated film, preferentially adopt magnetron sputtering technique to plate gradual change aluminium-nitrogen aluminium thermal-arrest plated film at inner tube 11 outer walls, can certainly adopt coating technique.
Vacuum heat collection pipe 1 is made by Pyrex, Pyrex have the advantages that expansion rate is low, high temperature resistant, high strength is high, hardness is high, light transmittance is high and chemical stability is good, particularly higher light transmittance can reduce sun reflection of light, improves the efficiency of light energy utilization.
In addition, the utility model is one-body molded with the inner water tank 41 of solar water heater with the inner tube 11 of vacuum heat collection pipe 1.Adopt one-body molded after, reduced the heat energy loss of intermediate connecting ring joint, and the heat in the vacuum heat collection pipe 1 can be delivered to more fast in the inner water tank 4, improve the efficiency of heating surface of solar water heater.Adopt the one-body molded assembling procedure that can also reduce solar water heater, save installation time.
In above-described embodiment, the cross section of vacuum heat collection pipe 1 adopts circle or oval, particularly oval-shaped vacuum heat collection pipe, and effective area of shining light is larger, unit are sunshine transform light energy ratio increases, and further improves the efficiency of heating surface of solar water heater.
Operation principle:
With reference to Fig. 3, solar radiation sees through the outer tube 10 of vacuum heat collection pipe 1, be delivered on the heat conducting film 13 of inner tube 11 inwalls along inner tube 11 walls after thermal-arrest plated film 12 absorptions of inner tube 11 outer walls, conduction by heat conducting film 13, so that inner tube 11 inwalls are evenly whole, be rapidly heated, water in the heating tube, temperature raises after the water heat absorption in the pipe, proportion reduces and rises, and forms a power that makes progress, and consists of a thermal siphon system, the proportion of cold water is larger, the proportion of hot water is less, and the hot water in the vacuum heat collection pipe 1 constantly toward come-up, enters water tank naturally, cold water in the water tank constantly sinks naturally, enter vacuum heat collection pipe 1, go round and begin again, the water in the solar water heater water tank also just has been heated.
Use discovery by reality, the solar water heater fuel factor of using above-mentioned heat collector reaches 12.7MJ/m
2, be higher than other products far away, and average heat loss factor reaches 11W/(m
2K), heat waste reduces greatly than other products, and the solar water heater performance significantly improves.
By above-described embodiment, the purpose of this utility model is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the utility model includes but not limited to the content of describing in accompanying drawing and the top specific embodiment.Any modification that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (7)
1. the heat collector of a solar water heater, comprise vacuum heat collection pipe, described vacuum heat collection pipe comprises inner and outer tubes, forms vacuum layer between the described inner and outer tubes, described outer wall of inner tube is coated with the thermal-arrest plated film, it is characterized in that: described inner tube wall is coated with heat conducting film.
2. the heat collector of a kind of solar water heater as claimed in claim 1, it is characterized in that: described heat conducting film is copper film or aluminium film.
3. the heat collector of a kind of solar water heater as claimed in claim 1 or 2, it is characterized in that: described heat conducting film thickness is 0.2mm～1.0mm.
4. the heat collector of a kind of solar water heater as claimed in claim 1, it is characterized in that: described thermal-arrest plated film is gradual change aluminium-nitrogen aluminium plated film or stainless steel aluminium nitride plated film.
5. the heat collector of a kind of solar water heater as claimed in claim 1, it is characterized in that: described vacuum heat collection pipe is made by Pyrex.
6. the heat collector of a kind of solar water heater as claimed in claim 1, it is characterized in that: the inner water tank of described inner tube and solar water heater is one-body molded.
7. the heat collector of a kind of solar water heater as claimed in claim 1 is characterized in that: the cross section of described vacuum heat collection pipe is for circular or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331222 CN202792632U (en) | 2012-07-10 | 2012-07-10 | Heat collection device of solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331222 CN202792632U (en) | 2012-07-10 | 2012-07-10 | Heat collection device of solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202792632U true CN202792632U (en) | 2013-03-13 |
Family
ID=47819884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220331222 Expired - Fee Related CN202792632U (en) | 2012-07-10 | 2012-07-10 | Heat collection device of solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202792632U (en) |
-
2012
- 2012-07-10 CN CN 201220331222 patent/CN202792632U/en not_active Expired - Fee Related
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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: 20130313 Termination date: 20150710 |
|
| EXPY | Termination of patent right or utility model |