CN111121316A - Anti-freezing device of solar water heater - Google Patents
Anti-freezing device of solar water heater Download PDFInfo
- Publication number
- CN111121316A CN111121316A CN201911375748.9A CN201911375748A CN111121316A CN 111121316 A CN111121316 A CN 111121316A CN 201911375748 A CN201911375748 A CN 201911375748A CN 111121316 A CN111121316 A CN 111121316A
- Authority
- CN
- China
- Prior art keywords
- valve
- heat
- water heater
- solar water
- heat insulation
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/70—Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
- F24S70/25—Coatings made of metallic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipe Accessories (AREA)
Abstract
The invention belongs to the field of solar water heaters, and particularly discloses a solar water heater anti-freezing device which comprises a solar water heater main body, a water pipe, a fastening piece, a heat-insulating sleeve, a first valve and a second valve, wherein the heat-insulating sleeve is wrapped on the outer side of the water pipe and is bonded with the water pipe through a bonding layer arranged on the inner side, the attaching degree between the inner side of the heat-insulating sleeve and the water pipe is improved, then a connecting end is inserted into an outer groove, a fixing block is further inserted into the inner groove to fix the heat-insulating sleeve, the connection stability of the two ends of the heat-insulating sleeve is improved, the outer side edge of the heat-insulating sleeve is coated with a black nickel coating or a black chromium coating and is used for absorbing the heat energy of solar radiation, a plurality of fastening pieces are arranged, the heat-insulating sleeve is further reinforced through the fastening pieces, the condition that the two ends, when the fastener is installed, the inserting end is inserted into the fixed end, the operation mode is simple, and the disassembly is convenient.
Description
Technical Field
The invention relates to the technical field of solar water heaters, in particular to an anti-freezing device of a solar water heater.
Background
At present, the solar water heater is used as a household article, almost families are provided with the solar water heater, the solar water heater integrates the advantages of an electric heater and a gas water heater, such as electricity saving, gas saving, energy saving and the like, is popular among people, and becomes the most mature energy-saving industry for solar energy utilization in China. The solar water heater can not cause any problem in summer, but when using the solar water heater in winter, the water supply and drainage pipeline is often influenced by frost crack and is used, guarantee that the water heater goes out hot water at any time, also can use as usual under the low temperature, prevent that residual water in the outdoor pipeline from frost crack the pipeline, generally adopt that there is the insulation cover in the winding of water pipe outside, keep warm to it, but the insulation cover is in the use, long-term wind blows the sun, and the weather condition of difference, lead to the insulation cover in the use, the condition that the part drops easily appears, the heat preservation effect to the water pipe has been reduced.
Disclosure of Invention
The invention aims to provide an anti-freezing device of a solar water heater, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a solar water heater anti-freezing device comprises a solar water heater main body, a water delivery pipe, fasteners, a heat insulation sleeve, a first valve and a second valve, wherein one end of the solar water heater main body is provided with a water outlet, the water outlet is connected with the water delivery pipe, the joint of the water delivery pipe and the water outlet is provided with the second valve, the tail part of the water delivery pipe is connected with an auxiliary water pipe, the first valve is installed on the auxiliary water pipe, the outer side of the water delivery pipe is wrapped with the heat insulation sleeve, a plurality of fasteners are distributed on the outer side of the heat insulation sleeve at equal intervals, one end of the heat insulation sleeve is provided with an outer groove, an inner side groove is formed in the outer groove, the other end of the heat insulation sleeve is provided with an arc-shaped connecting end inserted into the outer groove, a fixing block arranged on the inner side of the connecting end, The fixed end and the inserting end, the inserting end is connected with the fixed end.
Preferably, the two semicircular rings are matched with the insulating sleeve in shape, one ends of the two semicircular rings are movably connected, one semicircular ring is connected with the fixed end, the other semicircular ring is connected with the insertion end, the insertion end is L-shaped, and one end of the insertion end is inserted into the mounting hole in the fixed end.
Preferably, the solar water heater main body is provided with a temperature detector, the temperature detector transmits detected external temperature data to the controller, and the output end of the controller is electrically connected with the first valve, the second valve and the input end of the heating pad.
Preferably, when the controller receives temperature data transmitted by the temperature detector, and the received temperature data value is less than 0 ℃, the controller sends a closing signal to the second valve and simultaneously sends an opening signal to the first valve to close the second valve and open the first valve, so that water in the water pipe is discharged through the auxiliary water pipe, and the controller controls the heating pad to heat the water pipe.
Preferably, the heat preservation cover is filled with heat preservation cotton, and one side that the heat preservation cover is close to the raceway is provided with the heating pad, and the shape phase-match of heating pad and arc wall.
Preferably, one end of the connecting end connected with the heat insulation sleeve is flush with the outer side edge of the heat insulation sleeve, and the outer side edge of the other end of the connecting end is higher than the other end of the heat insulation sleeve.
Preferably, the coating is one of a black nickel coating or a black chromium coating.
Compared with the prior art, the invention has the beneficial effects that:
1. during the use, through wrapping up the insulating sleeve in the outside of raceway, bond line and raceway through inboard setting, improve the laminating degree between insulating sleeve inboard and the raceway, then insert the link in the outer groove, and then make the fixed block insert in the inboard groove, fix the insulating sleeve, improve the stability that insulating sleeve both ends are connected, the inside packing of insulating sleeve has the heat preservation cotton, play heat retaining effect, and outside limit scribbles the coating, black nickel coating is the heat absorption coating with black chromium coating, be used for absorbing solar radiation's heat energy.
2. The equidistant distribution in the insulation cover outside has a plurality of fasteners, further consolidates the insulation cover through the fastener, avoids it because of external force factor or weather condition, and the condition that breaks away from appears in the both ends that lead to the insulation cover, reduces the heat preservation effect of insulation cover, when the fastener is installed, through with peg graft the end insert the stiff end can, operating mode is simple, convenient to detach.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
fig. 2 is a sectional view of the structure of the water pipe of the present invention.
In the figure: 1. a solar water heater main body; 2. a water outlet; 3. a water delivery pipe; 4. mounting holes; 5. a fixed end; 6. a plug end; 7. a fastener; 8. coating; 9. a thermal insulation sleeve; 10. a heating pad; 11. an adhesive layer; 12. an outer tank; 13. an inner side groove; 14. a connecting end; 15. a fixed block; 16. a first valve; 17. an auxiliary water pipe; 18. a second valve; 19. a temperature detector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a technical solution: an anti-freezing device of a solar water heater comprises a solar water heater main body 1, a water pipe 3, fasteners 7, a heat insulation sleeve 9, a first valve 16 and a second valve 18, wherein a water outlet 2 is arranged at one end of the solar water heater main body 1, the water outlet 2 is connected with the water pipe 3, the second valve 18 is arranged at the joint of the water pipe 3 and the water outlet 2, an auxiliary water pipe 17 is connected with the tail part of the water pipe 3, the first valve 16 is installed on the auxiliary water pipe 17, the heat insulation sleeve 9 is wrapped outside the water pipe 3, a plurality of fasteners 7 are distributed at equal intervals outside the heat insulation sleeve 9, an outer groove 12 is arranged at one end of the heat insulation sleeve 9, an inner side groove 13 is arranged inside the outer groove 12, an arc-shaped connecting end 14 arranged at the other end of the heat insulation sleeve 9 is inserted into the outer groove 12, a fixing block 15 arranged inside, the side of the inner side of the arc-shaped groove is provided with a bonding layer 11, the outer side of the heat insulation sleeve 9 is adhered with a coating layer 8, the fastening piece 7 comprises two semicircular rings, a fixed end 5 and an inserting end 6, and the inserting end 6 is connected with the fixed end 5.
Furthermore, the two semicircular rings are matched with the insulating sleeve 9 in shape, one ends of the two semicircular rings are movably connected, one semicircular ring is connected with the fixed end 5, the other semicircular ring is connected with the inserting end 6, the inserting end 6 is L-shaped, and one end of the inserting end 6 is inserted into the mounting hole 4 in the fixed end 5.
Further, a temperature detector 19 is installed on the solar water heater main body 1, the temperature detector 19 transmits detected external temperature data to the controller, and the output end of the controller is electrically connected with the first valve 16, the second valve 18 and the input end of the heating pad 10.
Further, when the controller receives the temperature data transmitted by the temperature detector 19 and the received temperature data value is less than 0 ℃, the controller sends a closing signal to the second valve 18 and simultaneously sends an opening signal to the first valve 16 to close the second valve 18 and open the first valve 16, water in the water pipe 3 is discharged through the auxiliary water pipe 17, and the controller controls the heating pad 10 to heat the water pipe 3.
Further, the heat preservation cover 9 is filled with heat preservation cotton, and one side that the heat preservation cover 9 is close to raceway 3 is provided with heating pad 10, and heating pad 10 and the shape phase-match of arc wall.
Furthermore, one end of the connecting end 14 connected with the heat insulation sleeve 9 is flush with the outer side edge of the heat insulation sleeve 9, and the outer side edge of the other end of the connecting end 14 is higher than the other end of the heat insulation sleeve 9.
Further, the coating 8 is one of a black nickel coating or a black chromium coating.
The working principle is as follows: when the solar heat-insulating sleeve is used, the heat-insulating sleeve 9 is wrapped on the outer side of the water pipe 3 and is bonded with the water pipe 3 through the bonding layer 11 arranged on the inner side, the attaching degree between the inner side of the heat-insulating sleeve 9 and the water pipe 3 is improved, then the connecting end 14 is inserted into the outer groove 12, the fixing block 15 is further inserted into the inner groove 13, the heat-insulating sleeve 9 is fixed, the stability of connection of the two ends of the heat-insulating sleeve 9 is improved, heat-insulating cotton is filled in the heat-insulating sleeve 9 to play a role in heat insulation, the coating 8 is coated on the outer side, the black nickel coating and the black chromium coating are heat-absorbing coatings and are used for,
a plurality of fasteners 7 are distributed at equal intervals outside the heat-insulating sleeve 9, the heat-insulating sleeve 9 is further reinforced by the fasteners 7, the condition that two ends of the heat-insulating sleeve 9 are separated due to external force factors or weather conditions is avoided, the heat-insulating effect of the heat-insulating sleeve 9 is reduced, when the fasteners 7 are installed, the inserting end 6 is inserted into the fixed end 5, the operation mode is simple and convenient to disassemble, the temperature detector 19 transmits signals to the controller, when the controller receives a temperature data value smaller than 0 ℃, the controller sends a closing signal to the valve II 18 and simultaneously sends an opening signal to the valve I16 to close the valve II 18 and open the valve I16, the valve II 18 prevents water from entering the water pipe 3, residual water in the water pipe 3 is discharged through the auxiliary water pipe 17, the condition that a part of water is left in the water pipe 3 is avoided, the controller controls the heating pad 10 to heat the water pipe 3, .
It is worth noting that: the controller is controlled by the controller, the model of the controller is LY110C, and the controller, the temperature detector and the heating pad are common devices and belong to the existing mature technology, so that the electrical connection relation and the specific circuit structure are not described again.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a solar water heater freeze-proof device which characterized in that: the solar water heater comprises a solar water heater main body (1), a water delivery pipe (3), fasteners (7), a heat insulation sleeve (9), a first valve (16) and a second valve (18), wherein a water outlet (2) is formed in one end of the solar water heater main body (1), the water outlet (2) is connected with the water delivery pipe (3), the second valve (18) is arranged at the joint of the water delivery pipe (3) and the water outlet (2), an auxiliary water pipe (17) is connected to the tail of the water delivery pipe (3), the first valve (16) is installed on the auxiliary water pipe (17), the heat insulation sleeve (9) is wrapped on the outer side of the water delivery pipe (3), the fasteners (7) are distributed on the outer side of the heat insulation sleeve (9) at equal intervals, an outer groove (12) is formed in one end of the heat insulation sleeve (9), an inner side groove (13) is formed in the outer groove (12), and, the fixing block (15) arranged on the inner side of the connecting end (14) is inserted into the inner side groove (13), the inner side of the heat insulation sleeve (9) is provided with an arc-shaped groove matched with the water delivery pipe (3), the inner side of the arc-shaped groove is provided with a bonding layer (11), the outer side edge of the heat insulation sleeve (9) is bonded with a coating (8), the fastening piece (7) comprises two semicircular rings, a fixed end (5) and an inserting end (6), and the inserting end (6) is connected with the fixed end (5).
2. The solar water heater anti-freezing device according to claim 1, wherein: the two semicircular rings are matched with the insulating sleeve (9) in shape, one ends of the two semicircular rings are movably connected, one semicircular ring is connected with the fixed end (5), the other semicircular ring is connected with the inserting end (6), the inserting end (6) is L-shaped, and one end of the inserting end (6) is inserted into the mounting hole (4) in the fixed end (5).
3. The solar water heater anti-freezing device according to claim 1, wherein: a temperature detector (19) is installed on the solar water heater main body (1), the temperature detector (19) transmits detected external temperature data to the controller, and the output end of the controller is electrically connected with the first valve (16), the second valve (18) and the input end of the heating pad (10).
4. A solar water heater antifreeze apparatus according to claim 3, wherein: when the controller receives temperature data transmitted by the temperature detector (19), and the received temperature data value is smaller than 0 ℃, the controller sends a closing signal to the second valve (18), and simultaneously sends an opening signal to the first valve (16), so that the second valve (18) is closed and the first valve (16) is opened, water in the water pipe (3) is discharged through the auxiliary water pipe (17), and the controller controls the heating pad (10) to heat the water pipe (3).
5. The solar water heater anti-freezing device according to claim 1, wherein: the heat preservation cotton is filled in the heat preservation sleeve (9), a heating pad (10) is arranged on one side, close to the water conveying pipe (3), of the heat preservation sleeve (9), and the heating pad (10) is matched with the arc-shaped groove in shape.
6. The solar water heater anti-freezing device according to claim 1, wherein: one end of the connecting end (14) connected with the heat insulation sleeve (9) is flush with the outer side edge of the heat insulation sleeve (9), and the outer side edge of the other end of the connecting end (14) is higher than the other end of the heat insulation sleeve (9).
7. The solar water heater anti-freezing device according to claim 1, wherein: the coating (8) is one of a black nickel coating or a black chromium coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375748.9A CN111121316A (en) | 2019-12-27 | 2019-12-27 | Anti-freezing device of solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375748.9A CN111121316A (en) | 2019-12-27 | 2019-12-27 | Anti-freezing device of solar water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121316A true CN111121316A (en) | 2020-05-08 |
Family
ID=70503937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911375748.9A Pending CN111121316A (en) | 2019-12-27 | 2019-12-27 | Anti-freezing device of solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664468A (en) * | 2022-03-21 | 2022-06-24 | 中国原子能科学研究院 | Calcining device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254629A (en) * | 2002-02-28 | 2003-09-10 | Meiji Univ | Freeze fracture prevention type liquid pipe, water pipe system using the same, and water heater system |
| CN201724451U (en) * | 2010-06-29 | 2011-01-26 | 浙江比华丽电子科技有限公司 | Antifreezing water feeding pipe for solar water heater |
| WO2011080563A1 (en) * | 2009-12-30 | 2011-07-07 | Paolo Spinelli | Solar panel tube |
| CN103727690A (en) * | 2013-12-25 | 2014-04-16 | 广西超星太阳能科技有限公司 | Defroster of solar water heater |
| CN205481830U (en) * | 2016-04-12 | 2016-08-17 | 白雪 | About solar water heater heat preservation |
| CN205475453U (en) * | 2016-02-04 | 2016-08-17 | 延安大学 | Water supply line protection device |
| CN206709425U (en) * | 2017-03-06 | 2017-12-05 | 荆州市玖牧新能源有限公司 | A kind of antifreeze outer tube of solar water heater |
| CN207519287U (en) * | 2017-12-05 | 2018-06-22 | 安徽金龙园林景观工程有限公司 | A kind of nursery stock attemperator |
| CN208331539U (en) * | 2018-06-08 | 2019-01-04 | 山西伟能新型建材有限公司 | A kind of pipeline protection utilidor |
-
2019
- 2019-12-27 CN CN201911375748.9A patent/CN111121316A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254629A (en) * | 2002-02-28 | 2003-09-10 | Meiji Univ | Freeze fracture prevention type liquid pipe, water pipe system using the same, and water heater system |
| WO2011080563A1 (en) * | 2009-12-30 | 2011-07-07 | Paolo Spinelli | Solar panel tube |
| CN201724451U (en) * | 2010-06-29 | 2011-01-26 | 浙江比华丽电子科技有限公司 | Antifreezing water feeding pipe for solar water heater |
| CN103727690A (en) * | 2013-12-25 | 2014-04-16 | 广西超星太阳能科技有限公司 | Defroster of solar water heater |
| CN205475453U (en) * | 2016-02-04 | 2016-08-17 | 延安大学 | Water supply line protection device |
| CN205481830U (en) * | 2016-04-12 | 2016-08-17 | 白雪 | About solar water heater heat preservation |
| CN206709425U (en) * | 2017-03-06 | 2017-12-05 | 荆州市玖牧新能源有限公司 | A kind of antifreeze outer tube of solar water heater |
| CN207519287U (en) * | 2017-12-05 | 2018-06-22 | 安徽金龙园林景观工程有限公司 | A kind of nursery stock attemperator |
| CN208331539U (en) * | 2018-06-08 | 2019-01-04 | 山西伟能新型建材有限公司 | A kind of pipeline protection utilidor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664468A (en) * | 2022-03-21 | 2022-06-24 | 中国原子能科学研究院 | Calcining device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201875878U (en) | Solar photoelectric mutual-compensation electric water heater | |
| CN204043216U (en) | Photovoltaic and photothermal solar and air can combine hot-water heating system | |
| CN111121316A (en) | Anti-freezing device of solar water heater | |
| CN207881266U (en) | A kind of central heating formula full glass vacuum tube solar water system | |
| CN101761971A (en) | Heating equipment using solar energy and geothermal energy | |
| CN107166744A (en) | A kind of solar water heater | |
| CN210107539U (en) | Photovoltaic photo-thermal heating system based on cross-season heat storage | |
| CN209053170U (en) | A kind of domestic solar electric heater cold water upper hose preventing freeze in winter splits device | |
| CN2399679Y (en) | D. C. splitting solar-electricity combined water heater | |
| CN2573942Y (en) | Solar electric water heater | |
| CN205425469U (en) | Inserted pressure -bearing evacuated -tube solar water heater of no water tank outer wall | |
| CN101598464A (en) | Solar water heater with single casing pipe | |
| CN206739652U (en) | A kind of solar water heater of Intelligent anti-freezing | |
| CN206648321U (en) | A kind of solar water heater | |
| CN201488090U (en) | Solar heating device | |
| CN210292386U (en) | Anti-freezing solar water heater | |
| CN209470378U (en) | A kind of anti-freeze type solar water heater | |
| CN205208907U (en) | Photovoltaic water heater | |
| CN201697373U (en) | Anti-icer for solar energy water heater water duct | |
| CN220152834U (en) | Heating system utilizing air source heat pump | |
| CN218525961U (en) | Energy-saving heat-preservation box-type substation in severe cold area | |
| CN205279480U (en) | Ordinary vacuum tube solar generator | |
| CN211120033U (en) | Novel energy-saving environment-friendly space energy hot water engineering equipment | |
| CN203177499U (en) | Heat-accumulating type high-efficiency flat plate solar water heater | |
| CN201740244U (en) | Solar water heating system formed by modifying household electric water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
|
| RJ01 | Rejection of invention patent application after publication |