CN2847171Y - Intelligent inner circulation emptying anti-freezing device for solar energy heat collector and pipeline fall difference - Google Patents
Intelligent inner circulation emptying anti-freezing device for solar energy heat collector and pipeline fall difference Download PDFInfo
- Publication number
- CN2847171Y CN2847171Y CNU2005200980006U CN200520098000U CN2847171Y CN 2847171 Y CN2847171 Y CN 2847171Y CN U2005200980006 U CNU2005200980006 U CN U2005200980006U CN 200520098000 U CN200520098000 U CN 200520098000U CN 2847171 Y CN2847171 Y CN 2847171Y
- Authority
- CN
- China
- Prior art keywords
- water
- pipeline
- heat collector
- valve
- antifreezing
- 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
Links
Images
Classifications
-
- 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
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The utility model relates to a pipeline drop height intelligent inner circulation emptying anti-freezing device for a heat collector of a solar water heater, which belongs to the technical field of solar energy water heating engineering. The utility model is composed of a heat insulating water tank, a water drainage vent pipe, a water temperature and water level detector, a heat collector, a normally closed electromagnetic valve, a one-way valve, a hot water circulating pump, a normally opened electromagnetic valve, an intelligent control tank, a cold water booster pump, an antifreezing water tank, a water inlet electromagnetic valve, a hot water booster pump, a pipeline, etc. In the utility model, the intelligent control tank carries out automatic control to enables water the heat collector and the pipeline to be automatically emptied by utilizing the drop height of the water, and the water heater can be prevented from freezing; the drained water can be reused after recovered by an antifreezing water tank. The utility model solves the problems that if existing solar water heater adopts the forced circulation method, a circulating pump is in a working operating state as long as the air temperature is low, and the electric energy which dose not need to be consumed is consumed; if the utility model adopts the double-circulation method, a heat conducting working medium can not work after the formation of scale, and needs to be replaced; if the utility model adopts the emptying method, a large quantity of precious water resources are wasted. The utility model is suitable for large-sized solar engineering or domestic solar water heaters.
Description
Affiliated technical field:
The utility model relates to circulation evacuation and anti-freezing device in a kind of solar thermal collector and the pipeline drop intelligence, belongs to the solar heating engineering field.
Background technology:
At present, in the various domestic solar water heaters of China, large-scale solar water conservancy project journey, the freezing proof technique that solar thermal collector is generally used mainly is following a few class:
1, forced circulation method.Promptly between solar thermal collector and attemperater circulating pump is installed, circulating pump starts when temperature is lower than 1 ℃, forces to promote water and constantly circulates between heat collector and attemperater, does not allow level become quiet and forms and freeze.Its shortcoming is:
The one, consumed the energy in vain.As long as temperature is low, circulating pump is just in running order, has consumed the electric energy of unnecessary consumption.
The 2nd, unstability.Under the low situation of temperature, in a single day circulating pump breaks down, and heat collector and pipeline will be damaged by bursting by freezing.
The 3rd, can not be lasting.If low for a long time temperature, therefore water meeting further loss heat and then icing, must heat for system by the external world once more, carry out the temperature control circulation, otherwise heat collector and pipeline equally can be frozen to be ruined.
The 4th, shortened service life of equipment.Any equipment all has service life, and entire equipment all is the time that be used for work for the time that antifreeze oneself consumes.With regard to the situation of China, 1 year nearly about 1/6 time was in low temperature, and this time of 1/6 all wants forced circulation antifreeze, pressed 15 years projected lives of solar facilities and calculated, and solar facilities will shorten 2.5 years service life.
2, double-loop method.Promptly add liquid thermal conductivity working medium (this kind working medium has antifreeze characteristic) in heat collector, heat collector and runner form closed system, and runner carries out heat exchange with water at low temperature by water tank in water tank.Its shortcoming is:
The one, easy fouling.Just can not work after the heat-conducting work medium fouling, need to change.General work 3 years, heat-conducting work medium is just wrapped up in extremely by incrustation scale substantially.Changing heat-conducting work medium need take whole system apart, and cost is very high.
The 2nd, have dependence.The water that heat-conducting work medium relies in the attemperater has certain surplus temperature.If the low temperature time lengthening, the water in the attemperater is cooling constantly, and the heat-conducting work medium antifreezing effect will reduce greatly, and finally ineffective.
3, get involved heating." electric-heating belt " or other heating wire promptly are installed in pipeline and heat collector, and when temperature was lower than 1 ℃, the heating of pipeline and heat collector trace was given in the energising of " electric-heating belt " or heating wire, guarantees that the temperature of pipeline and heat collector is higher than 1 ℃.Its shortcoming is:
The one, dangerous.No matter being " electric-heating belt " or heating wire, all is charged object, allows charged object be in for a long time under the hot environment and works, and their insulating properties can sharply descend, and in a single day " electric-heating belt " or heating wire lose insulating properties, just may cause electric shock accidents and fire.In fact existing solar water heater uses " electric-heating belt " or heating wire to cause the case of fire, and Chinese solar energy net just has such report.
The 2nd, consumed electric energy in vain.As long as temperature is low, " electric-heating belt " or heating wire will be worked, will consumed power.
4, simple emptying.When promptly it is cold the delivery port of water heater is opened, with the whole emptying of the water in heat collector and the pipeline.Its shortcoming is:
The one, the precious water resource of a large amount of wastes.From heat collector and pipeline, water is bled off simply, wasted great lot of water resources, large-scale solar water conservancy project journey especially, the water of being adorned in heat collector and the pipeline calculates with ton, and its waste is surprising especially.
The 2nd, uncertainty and the difficulty of implementing.Heat collector and pipeline all are high-seals, otherwise, under the situation of work, can leak, even can't work.In this case, it is very difficult the water of heat collector and pipeline the inside being released, and exhaust-valve is set exactly can not guarantees water is put totally.
5, force emptying.Promptly be provided with one again outside normal work system and force emptying system, emptying pump, pipeline and the control system of configure dedicated are extracted into the water in heat collector and the pipeline in the attemperater when low temperature.Its shortcoming is:
The one, increase manufacturing cost.Outside the normal work system of water heater, be provided with one again and force emptying system, the pump of configure dedicated, gate valve, pipeline, detection and control device can increase manufacturing cost undoubtedly greatly.
The 2nd, increased the difficulty of controlling.Be provided with and force after the emptying system control corresponding system to be set, force the control system of emptying or set up separately, or incorporate the work general control system into.If set up separately then be difficult to coordination with general control system; If incorporate the work general control system into, then increased the difficulty of control.Not doing a good job to form upward actions such as water, circulation of work general control system commander, and forces emptying system to command emptying.Not only can not play the effect of evacuation and anti-freezing, also can waste power and water, even the damage system.
Summary of the invention:
The purpose of this utility model is: a kind of drop that utilizes water is provided, automatically control by intelligent control box, make the automatic emptying of water in heat collector and the pipeline, circulation evacuation and anti-freezing device in the solar thermal collector of recycling and the pipeline drop intelligence after the water of discharge is reclaimed by antifreezing water tank.
The utility model is to realize above-mentioned purpose by following technical scheme:
Circulation evacuation and anti-freezing device is by attemperater in this solar thermal collector and the pipeline drop intelligence, the sluicing breather pipe, the water-temperature water-level detector, the excessive low water level protection device, the heat collector temperature probe, heat collector, normally closed solenoid valve, check valve, hot water circulating pump, normally open solenoid valve, hand sluice valve, intelligent control box, the cold water booster pump, the mid water levels controller, antifreezing water tank, entering water electromagnetic valve, the hot water booster pump, steam porus excretorius and pipeline are formed, heat collector, the sluicing breather pipe, attemperater places the top of roof of storied building, antifreezing water tank places the below of roof of storied building, and the volume of antifreezing water tank is more than or equal to 2 times of the total measurement (volume) sum of heat collector and pipeline; It is characterized in that: a side of heat collector is connected with a sluicing breather pipe that is inserted in the attemperater by pipeline, and the bottom of attemperater communicates with the user by pipeline, and hand sluice valve, hot water booster pump and check valve are housed on this pipeline from top to bottom successively; The opposite side of heat collector communicates with the upper and lower part of antifreezing water tank respectively by pipeline, with on the pipeline that top communicates normally open solenoid valve and hand sluice valve are housed, and on the pipeline that the bottom communicates normally closed solenoid valve, check valve, cold water booster pump and hand sluice valve are housed successively from top to bottom; The pipeline that communicates with the antifreezing water tank bottom and with pipeline that the attemperater bottom communicates between be communicated with by pipeline, check valve and hot water circulating pump are housed on this pipeline; Intelligent control box is connected with entering water electromagnetic valve with hot water circulating pump, hot water booster pump, normally open solenoid valve, normally closed solenoid valve, water-level and water-temperature detector, heat collector temperature probe, excessive low water level protection device, cold water booster pump respectively by control line.The heat collector temperature probe is equipped with at the delivery port place, the upper right corner of heat collector, and the junction of sluicing breather pipe and pipeline is shaped on the steam porus excretorius, and a side of attemperater is shaped on water-temperature water-level detector and excessive low water level protection device; The middle part of antifreezing water tank is shaped on the mid water levels controller.
The utility model compared with prior art has following beneficial effect:
1. this device merges among the solar heating engineering system, and as the part of inner loop system, structure is very simple, does not need the energy to heat collector and pipeline enforcement emptying the time.
2. water is to utilize drop to let out down naturally, drains reliably, effectively the water in emptying heat collector and the pipeline.
3. reclaim the water in heat collector and the pipeline, as the usefulness of water supply next time, water can not wasted all the time in inner loop.
4. there is not potential safety hazard.This installs no power, and just energy is antifreeze to the water heating not need oil, gas, does not therefore have any potential safety hazard.
5. installation and maintenance is convenient.
6. only in the hot water engineering system, be provided with an antifreezing water tank, do not set up winterization system in addition, do not need independent control system, easily control.
7. do not need winterization system is set in addition, saved cost of investment.
8. energy savings.When implementing emptying without any need for the energy.
Description of drawings:
Accompanying drawing is the structural representation of circulation evacuation and anti-freezing device in solar thermal collector and the pipeline drop intelligence.
Among the figure: 1. attemperater, 2. sluicing breather pipe, 3; 4; 5. water-temperature water-level detector; 6. excessive low water level protection device, 7. heat collector temperature probe, 8. heat collector; 9. roof of storied building, 10. normally closed solenoid valve, 11. check valves; 12. hot water circulating pump, 13. normally open solenoid valves, 14. hand sluice valves; 15. intelligent control box, 16. check valves, 17. cold water booster pumps; 18. hand sluice valve, 19. mid water levels controllers, 20. antifreezing water tanks; 21. hand sluice valve, 22. check valves, 23. entering water electromagnetic valves; 24. hand sluice valve; 25. check valve, 26. hot water booster pumps, 27. hand sluice valves; 28. the steam porus excretorius, 29. pipelines.
The specific embodiment
Circulation evacuation and anti-freezing device is by attemperater 1 in this solar thermal collector and the pipeline drop intelligence; sluicing breather pipe 2; water-temperature water-level detector 3; 4; 5; excessive low water level protection device 6; heat collector temperature probe 7; heat collector 8; roof of storied building 9; normally closed solenoid valve 10; check valve 11; hot water circulating pump 12; normally open solenoid valve 13; hand sluice valve 14; intelligent control box 15; check valve 16; cold water booster pump 17; hand sluice valve 18; mid water levels controller 19; antifreezing water tank 20; hand sluice valve 21; check valve 22; entering water electromagnetic valve 23; hand sluice valve 24; check valve 25; hot water booster pump 26; hand sluice valve 27; steam porus excretorius 28 and pipeline 29 constitute.Come into operation by intelligent control box 7 solar heating engineerings in 15 setting morning, the water of letting out last night to get off from heat collector 8 and pipeline 29 has been housed in the antifreezing water tank 20.When the time arrives at 7, intelligent control box 15 commander's normally closed solenoid valves 10 are opened, and normally open solenoid valve 13 cuts out, cold water booster pump 17 begins by heat collector 8 water filling in attemperater 1, and check valve 16 stops when supplying water intrasystem aqueous reflux to be gone in the antifreezing water tank 20.When the water level of antifreezing water tank 20 during at 1/2 water level, mid water levels controller 19 sends signal, and entering water electromagnetic valve 23 is opened moisturizing in antifreezing water tank 20, guarantees to have the half chests water level in the antifreezing water tank 20.When the water level of attemperater 1 reached 1/3, water-temperature water-level detector 5 sent signal, and water supply electromagnetic valve 23 and cold water booster pump 17 quit work, and only maintained half chests water in the antifreezing water tank 20.
When the water level of attemperater 1 reached 1/3, water-temperature water-level detector 5 sent signal simultaneously again, started working by intelligent control box 15 commander's hot water circulating pumps 12, and check valve 11 guarantees that the water of circulation can not flow backwards.Water is progressively heating of circulation repeatedly between heat collector 8 and attemperater 1.When water is heated to some design temperatures (this temperature can configure in advance according to the needs of actual conditions) by the sun by heat collector 8 after, the heat collector temperature probe 7 of heat collector upper right corner delivery port is delivered to intelligent control box 15 with signal, intelligent control box 15 is commanded cold water booster pump 17 and entering water electromagnetic valve 23 work once more, cold water enters attemperater 1 by heat collector 8 once more, when reaching water-temperature water-level detector 4 respectively, during 3 height, water-temperature water- level detector 4,3 send signal respectively, circulating pump 12 is started working once more, repeat the above-mentioned course of work again, the water in attemperater 1 reaches till the predetermined water level and temperature so repeatedly.Can satisfy user's demand on the same day by the hot water of storing in the designing requirement attemperater.
When filling with hot water in the attemperater 1 and reaching predetermined temperature, promptly this device has been finished the task on the same day, the water-temperature water-level detector 3 on attemperater 1 top passes to intelligent control box 15 with signal, intelligent control box 15 is sent instruction and is closed except that other work systems to the system of user's water supply, this moment, normally closed solenoid valve 10 was closed, the normally open solenoid valve 13 of antifreezing water tank 1 top is in open state, water in the heat collector 8 is under the effect of sluicing breather pipe 2 and gravity, all let out in the antifreezing water tank 20, there is not a water in heat collector 8 and the associated conduit 29, thereby should heart heat collector 8 and the problem that is damaged by frost of pipeline 29.
When temperature is lower than 1 ℃, temperature probe 7 passes to intelligent control box 15 with signal, and intelligent control box 15 also can be closed work system, and the water in heat collector 8 and the pipeline 29 is under the gravity effect, enter in the antifreezing water tank 20 by normally open solenoid valve 13, guarantee that heat collector 8 and associated conduit 29 are not damaged by frost.
When this device causes water level in the attemperater 1 to be lower than lowest water level because of certain reason; excessive low water level protection device 6 sends signal to intelligent control box 15; intelligent control box 15 can be closed normally open solenoid valve 14; open normally closed solenoid valve 10; start cold water booster pump 17; then open entering water electromagnetic valve 23, be filled to lowest water level for attemperater 1.
When certain part of this device breaks down, need repairing and more during exchange device, can start hand sluice valve 14,18,21,24,27 as required, section of tubing is closed, be convenient to safeguard.
Claims (3)
1. circulation evacuation and anti-freezing device in solar thermal collector and the pipeline drop intelligence, it is by attemperater (1), sluicing breather pipe (2), water-temperature water-level detector (3), (4), (5), excessive low water level protection device (6), heat collector temperature probe (7), heat collector (8), normally closed solenoid valve (10), check valve (11), hot water circulating pump (12), normally open solenoid valve (13), hand sluice valve (14), intelligent control box (15), check valve (16), cold water booster pump (17), hand sluice valve (18), mid water levels controller (19), antifreezing water tank (20), hand sluice valve (21), check valve (22), entering water electromagnetic valve (23), hand sluice valve (24), check valve (25), hot water booster pump (26), hand sluice valve (27), steam porus excretorius (28) and pipeline (29) are formed; Heat collector (8), sluicing breather pipe (2), attemperater (1) place the top of roof of storied building (9), and antifreezing water tank (20) places the below of roof of storied building (9); It is characterized in that: a side of heat collector (8) is connected with a sluicing breather pipe (2) that is inserted in the attemperater (1) by pipeline (29), the bottom of attemperater (1) communicates with the user by pipeline (29), and hand sluice valve (27), hot water booster pump (26) and check valve (25) are housed on this pipeline (29) from top to bottom successively; The opposite side of heat collector (8) communicates with the upper and lower part of antifreezing water tank (20) respectively by pipeline (29), normally open solenoid valve (13) and hand sluice valve (14) are housed on the pipeline that communicates with top (29), and on the pipeline that the bottom communicates normally closed solenoid valve (10), check valve (16), cold water booster pump (17) and hand sluice valve (18) are housed successively from top to bottom; The pipeline (29) that communicates with antifreezing water tank (20) bottom and with pipeline (29) that attemperater (1) bottom communicates between be communicated with by pipeline (29), check valve (11) and hot water circulating pump (12) are housed on this pipeline (29); Intelligent control box (15) is connected with hot water circulating pump (12), hot water booster pump (26), normally open solenoid valve (13), cold water booster pump (17), normally closed solenoid valve (10), heat collector temperature probe (7), water-temperature water-level detector (3), (4), (5), excessive low water level protection device (6) and entering water electromagnetic valve (23) respectively by control line.
2. circulation evacuation and anti-freezing device in solar thermal collector according to claim 1 and the pipeline drop intelligence, it is characterized in that: heat collector temperature probe (7) is equipped with at the delivery port place, the upper right corner of heat collector (8), sluicing breather pipe (2) is shaped on steam porus excretorius (28) with the junction of pipeline (29), and a side of attemperater (1) is shaped on water-temperature water-level detector (3,4,5) and excessive low water level protection device (6); The middle part of antifreezing water tank (20) is shaped on mid water levels controller (19).
3. circulation evacuation and anti-freezing device in solar thermal collector according to claim 1 and the pipeline drop intelligence is characterized in that: the volume of described antifreezing water tank (20) is more than or equal to 2 times of the total measurement (volume) sum of heat collector (8) and pipeline (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200980006U CN2847171Y (en) | 2005-09-05 | 2005-09-05 | Intelligent inner circulation emptying anti-freezing device for solar energy heat collector and pipeline fall difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200980006U CN2847171Y (en) | 2005-09-05 | 2005-09-05 | Intelligent inner circulation emptying anti-freezing device for solar energy heat collector and pipeline fall difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2847171Y true CN2847171Y (en) | 2006-12-13 |
Family
ID=37512594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200980006U Expired - Fee Related CN2847171Y (en) | 2005-09-05 | 2005-09-05 | Intelligent inner circulation emptying anti-freezing device for solar energy heat collector and pipeline fall difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2847171Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846412A (en) * | 2010-07-15 | 2010-09-29 | 哈尔滨德广新能源有限责任公司 | Circulating water anti-freezing system for solar heat collector |
| CN101900439A (en) * | 2010-05-24 | 2010-12-01 | 韩绍良 | Solar water heater |
| CN103256739A (en) * | 2013-06-14 | 2013-08-21 | 衢州昀睿工业设计有限公司 | Automatic water-replenishing ground water tank system of solar water heater |
| CN107062649A (en) * | 2017-03-22 | 2017-08-18 | 延安大学 | A kind of solar water heater cold water retracting device |
| CN109798681A (en) * | 2019-03-17 | 2019-05-24 | 徐州工程学院 | The antifreeze method of solar energy heat collector and thermal-arrest with automatic freezing-protective function |
| CN114322334A (en) * | 2021-11-29 | 2022-04-12 | 郑州大学 | Tower type solar heat collection steam heating system |
-
2005
- 2005-09-05 CN CNU2005200980006U patent/CN2847171Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900439A (en) * | 2010-05-24 | 2010-12-01 | 韩绍良 | Solar water heater |
| CN101846412A (en) * | 2010-07-15 | 2010-09-29 | 哈尔滨德广新能源有限责任公司 | Circulating water anti-freezing system for solar heat collector |
| CN101846412B (en) * | 2010-07-15 | 2012-03-07 | 哈尔滨德广新能源有限责任公司 | Circulating water anti-freezing system for solar heat collector |
| CN103256739A (en) * | 2013-06-14 | 2013-08-21 | 衢州昀睿工业设计有限公司 | Automatic water-replenishing ground water tank system of solar water heater |
| CN103256739B (en) * | 2013-06-14 | 2014-10-22 | 衢州昀睿工业设计有限公司 | Automatic water-replenishing ground water tank system of solar water heater |
| CN107062649A (en) * | 2017-03-22 | 2017-08-18 | 延安大学 | A kind of solar water heater cold water retracting device |
| CN107062649B (en) * | 2017-03-22 | 2023-05-16 | 延安大学 | Cold water recovery device of solar water heater |
| CN109798681A (en) * | 2019-03-17 | 2019-05-24 | 徐州工程学院 | The antifreeze method of solar energy heat collector and thermal-arrest with automatic freezing-protective function |
| CN109798681B (en) * | 2019-03-17 | 2024-04-16 | 徐州工程学院 | Solar heat collecting device with automatic antifreezing function and heat collecting antifreezing method |
| CN114322334A (en) * | 2021-11-29 | 2022-04-12 | 郑州大学 | Tower type solar heat collection steam heating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2847171Y (en) | Intelligent inner circulation emptying anti-freezing device for solar energy heat collector and pipeline fall difference | |
| CN101261020A (en) | Top water bathing split solar water heater | |
| CN203687391U (en) | Full-automatic panel solar energy centralized hot-water supply system for high altitude areas | |
| CN102331096A (en) | Solar water heating system with ceramic sun panel operated and controlled by single water pump | |
| CN103438595B (en) | Solar water heater wind energy motive power pipeline water circulation defroster | |
| CN102374666B (en) | Low-power pump and solar water heater is adopted to replace the water storage combination device of hot water | |
| CN200982758Y (en) | Full-automatic intelligent heat-storage cabin of solar energy water heater | |
| CN203413852U (en) | Novel energy-saving antifreezing solar water heater | |
| CN201225708Y (en) | Top water bathing split solar water heater | |
| CN200968736Y (en) | Energy-saving and water-saving indoor water storage tank of solar water heater | |
| CN201340103Y (en) | Emptying type high-efficient anti-freezing solar water heater | |
| CN201606964U (en) | Residual water water conservation control device in gas solar pipeline | |
| CN106989434A (en) | Heating in solar energy building system | |
| CN2624125Y (en) | Efficient constant temperature solar water heater | |
| CN201715617U (en) | Surface intake and automatic emptying solar water heater | |
| CN201314717Y (en) | Built-in solar antifreeze emptying device | |
| CN201697365U (en) | Active emptying device of solar water heater pipeline | |
| CN101033891A (en) | Solar-assisted energy-saving heat and heat water supplying device for suitable for small building | |
| CN201043818Y (en) | Constant-pressure water-jacking type double-pipe emptying anti-freezing solar water heater | |
| CN205678916U (en) | Timely hot water effluent's system of solar water heater | |
| CN2527896Y (en) | High property drainage valve for solar water heater | |
| CN200996744Y (en) | Automatic water-replenishing, emptying and anti-freezing device for water supply and drainage of single pipe | |
| CN214791966U (en) | High energy storage solar heating system | |
| CN201764711U (en) | Hot water storage combination device adopting low-power pump and solar water heater for hot water replacement | |
| CN203615472U (en) | Household solar heat collection phase-change energy storage heating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Bao Jialin Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061213 Termination date: 20120905 |