CN201852324U - Vacuum heat absorption pipe of solar water heater - Google Patents
Vacuum heat absorption pipe of solar water heater Download PDFInfo
- Publication number
- CN201852324U CN201852324U CN201020585579XU CN201020585579U CN201852324U CN 201852324 U CN201852324 U CN 201852324U CN 201020585579X U CN201020585579X U CN 201020585579XU CN 201020585579 U CN201020585579 U CN 201020585579U CN 201852324 U CN201852324 U CN 201852324U
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- CN
- China
- Prior art keywords
- solar
- pipe
- water heater
- return duct
- vacuum heat
- 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 vacuum heat absorption pipe of a solar water heater, comprising an inner pipe and an outer pipe, wherein the inner pipe is internally provided with a backflow pipe along the axial direction of the inner pipe; and the backflow pipe is provided with a small through hole. The advantages are as follows: on the basis of the existing solar water heater and under the same conditions, the inner structure of the solar vacuum heat absorption pipe is improved, the general circulation of hot water in the solar vacuum heat absorption pipe and water in a heat insulation bucket is strengthed, the temperature difference between the hot water in the solar vacuum heat absorption pipe and the water in the heat insulation bucket is reduced, so that the solar energy absorbed by the solar vacuum heat absorption pipe is timely transmitted into the heat insulation bucket for storage, and the heat loss caused by heat radiation due to high temperature of the hot water in the solar vacuum heat absorption pipe is reduced, therefore, the heating efficiency of the solar water heater is obviously improved with the increase of very little cost; and compared with the prior art, in the vacuum heat absorption pipe, the heating efficiency can be improved by 2% to 8% and the temperature of the hot water of the solar water heater can be increased by 1 DEG C to 5 DEG C.
Description
Technical field
The utility model relates to the solar water heater field, is a kind of solar-energy water heater vacuum endothermic tube specifically.
Background technology
At present solar water heater relies on solar vacuum heat absorbing pipe to absorb the water heating of solar thermal energy in will manage, and the water of heating in the pipe is because the water in buoyancy and the heat-preserving container carries out heat exchange, and the temperature raising that makes the insulation inner bucket water becomes hot water and for people to use.Because the solar-energy water heater vacuum endothermic tube belongs to slender type, internal diameter is less with respect to length, because conduction of the heat of water and flow behavior, being difficult to form the outer hot water that heats makes progress mobile and big circulation that water that internal layer does not heat flows downward, just in pipe, form a plurality of little circulation, alternately the solar energy that absorbs is delivered to heat-preserving container mutually by these little circulation, therefore the lower water of temperature can not directly arrive the vacuum heat absorbing pipe inner bottom part in the heat-preserving container, makes the temperature difference of interior water of vacuum heat absorbing pipe and the water in the heat-preserving container bigger.Because the temperature of water is higher in the vacuum heat absorbing pipe, when absorbing solar energy, also follows outside heat radiation heat radiation, thereby influence the thermal efficiency of solar water heater.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of solar-energy water heater vacuum endothermic tube, it can improve solar water heater the thermal efficiency, solar water heater is produced the hot water temperature higher.
Technical scheme: in order to solve the problems of the technologies described above, a kind of solar-energy water heater vacuum endothermic tube described in the utility model, pipe and outer tube in comprising, in described in the pipe and along interior tubular axis to return duct is installed, on described return duct, have small through hole.
Described return duct equates with the interior length of tube of vacuum tube.
The diameter of described return duct is less than the radius of pipe in the vacuum tube.
The diameter of described return duct is 0.5～2.0cm.
Respectively have one or more described small through hole in the stage casing of described return duct, near an end of managing the bottom in described.
The described small through hole of a row is opened between the end near pipe bottom in described in stage casing on described return duct.
Between the two ends of described return duct, open the described small through hole of a row.
Described return duct is plastic tube or glass tube.
Principle of the present utility model: pipe bottom and each section in the smooth and easy inflow solar energy vacuum tube of water that temperature is lower in the return duct, the hot water rising of Guan Zhongyi heating in promoting flows to heat-preserving container, make the stable big circulation of formation between the higher water of temperature in temperature is lower in the heat-preserving container water and the interior pipe, the heat that solar vacuum heat absorbing pipe is absorbed in time is delivered in the heat-preserving container to be saved, reduced the temperature of hot water in the solar vacuum heat absorbing pipe, reduce the thermal radiation loss of hot water in the solar vacuum heat absorbing pipe, improved the thermal efficiency of solar water heater.
Beneficial effect: compared with prior art, the utility model has the advantages that based on existing solar water heater, under the same conditions by improving the solar vacuum heat absorbing pipe internal structure, strengthen hot water and the big circulation that is incubated inner bucket water in the solar vacuum heat absorbing pipe, reduce the hot water and the temperature difference that is incubated inner bucket water in the solar vacuum heat absorbing pipe, the solar energy that solar vacuum heat absorbing pipe is absorbed is delivered in time in the heat-preserving container and stores, reduce the interior hot water of solar vacuum heat absorbing pipe and produce thermal-radiating radiation loss because of temperature is high, thereby improve the thermal efficiency of solar water heater; Increase the thermal efficiency that very little cost can obviously improve solar water heater, compared with prior art can improve the thermal efficiency 2%～8%, 1 ℃～5 ℃ of the hot water temperatures of raising solar water heater.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of return duct from the stage casing to perforate the end bottom pipe in described in the utility model;
Fig. 3 is the structural representation of perforate between the return duct two ends in the utility model;
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement (as the material that changes return duct, diameter, return duct position of opening, perforate quantity etc.), these improvement also should be considered as protection domain of the present utility model.
Embodiment 1: as shown in Figure 1, a kind of solar-energy water heater vacuum endothermic tube described in the utility model, pipe 1 and outer tube 2 are axially installed with return duct 3 in comprising in interior pipe 1 and along interior pipe 1, interior pipe 1 equal in length of return duct 3 and vacuum tube; The diameter of return duct 3 is less than the radius of pipe 1 in the vacuum tube, and the diameter of return duct 3 is preferably 1.0cm; Open on 2 through holes 4, the end in the stage casing of return duct 3 and to open 4 through holes 4, two big circulation of formation in solar vacuum heat absorbing pipe near pipe 1 bottom in described.Wherein said return duct 3 is the little plastic tube of thermal conductivity factor.
During installation, at first return duct 3 is put in the interior pipe 1 of vacuum heat absorbing pipe and rely on himself gravity abut against described on the in the shade wall of pipe 1, and an end correspondence that will have through hole 4 bottom of interior pipe 1, manage 1 bottom in the smooth and easy inflow solar energy vacuum tube of water that temperature is lower in the return duct 3 like this, the hot water that has heated in the pipe 1 in promoting rises and flows to heat-preserving container, make the stable big circulation of formation between the higher water of temperature in temperature is lower in the heat-preserving container water and the interior pipe 1, the heat that solar vacuum heat absorbing pipe is absorbed in time is delivered in the heat-preserving container to be saved, reduced the temperature of hot water in the solar vacuum heat absorbing pipe, reduce the thermal radiation loss of hot water in the solar vacuum heat absorbing pipe, improved the thermal efficiency of solar water heater.
Embodiment 2: a kind of solar-energy water heater vacuum endothermic tube described in the utility model, and pipe 1 and outer tube 2 are axially installed with return duct 3 in comprising in interior pipe 1 and along interior pipe 1, interior pipe 1 equal in length of return duct 3 and vacuum tube; The diameter of return duct 3 is less than the radius of pipe 1 in the vacuum tube, and the diameter of return duct 3 is preferably 1.2cm; As shown in Figure 2, to arranging described small through hole 4 near opening one between the end of interior pipe 1 bottom, the quantity of through hole 4 is 4～6, forms 4～6 big circulation like this in solar vacuum heat absorbing pipe in the stage casing on the return duct 3.Wherein said return duct 3 is the little plastic tube of thermal conductivity factor.
Installation method is substantially the same manner as Example 1.
Embodiment 3: a kind of solar-energy water heater vacuum endothermic tube described in the utility model, and pipe 1 and outer tube 2 are axially installed with return duct 3 in comprising in interior pipe 1 and along interior pipe 1, interior pipe 1 equal in length of return duct 3 and vacuum tube; The diameter of return duct 3 is less than the radius of pipe 1 in the vacuum tube, and the diameter of return duct 3 is preferably 0.8cm; As shown in Figure 3, open the described small through hole 4 of a row between return duct 3 two ends, the quantity of through hole 4 is 6～10, forms 6～10 big circulation like this in solar vacuum heat absorbing pipe.It wherein is the thermal conductivity factor cuvette.
Installation method is identical with embodiment 1.
Embodiment 4: substantially the same manner as Example 3, the diameter of different is return duct 3 is 2.0cm.
Embodiment 5: substantially the same manner as Example 3, the diameter of different is return duct 3 is 0.5cm.
Claims (8)
1. a solar-energy water heater vacuum endothermic tube comprises interior pipe (1) and outer tube (2), it is characterized in that, is axially installed with return duct (3) in the pipe (1) and along interior pipe (1) in described, has small through hole (4) on described return duct (3).
2. solar-energy water heater vacuum endothermic tube according to claim 1 is characterized in that, interior pipe (1) equal in length of described return duct (3) and vacuum tube.
3. solar-energy water heater vacuum endothermic tube according to claim 1 is characterized in that, the diameter of described return duct (3) is less than the radius of pipe (1) in the vacuum tube.
4. solar-energy water heater vacuum endothermic tube according to claim 3 is characterized in that, the diameter of described return duct (3) is 0.5～2.0cm.
5. solar-energy water heater vacuum endothermic tube according to claim 1 is characterized in that, respectively has one or more described small through hole (4) in the stage casing of described return duct (3), near the end bottom the pipe (1) in described.
6. solar-energy water heater vacuum endothermic tube according to claim 1 is characterized in that, row's described small through hole (4) is opened between the end near pipe (1) bottom in described in the stage casing on described return duct (3).
7. solar-energy water heater vacuum endothermic tube according to claim 1 is characterized in that, opens row's described small through hole (4) between the two ends of described return duct (3).
8. solar-energy water heater vacuum endothermic tube according to claim 1 is characterized in that, described return duct (3) is plastic tube or glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020585579XU CN201852324U (en) | 2010-10-29 | 2010-10-29 | Vacuum heat absorption pipe of solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020585579XU CN201852324U (en) | 2010-10-29 | 2010-10-29 | Vacuum heat absorption pipe of solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852324U true CN201852324U (en) | 2011-06-01 |
Family
ID=44094715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020585579XU Expired - Fee Related CN201852324U (en) | 2010-10-29 | 2010-10-29 | Vacuum heat absorption pipe of solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201852324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839464A (en) * | 2017-03-31 | 2017-06-13 | 东南大学 | A kind of all-glass thermal-pipe type vacuum heat-collecting pipe with reflux |
-
2010
- 2010-10-29 CN CN201020585579XU patent/CN201852324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839464A (en) * | 2017-03-31 | 2017-06-13 | 东南大学 | A kind of all-glass thermal-pipe type vacuum heat-collecting pipe with reflux |
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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: 20110601 Termination date: 20131029 |