CN201318810Y - Freeze-proof solar energy heat collecting system - Google Patents
Freeze-proof solar energy heat collecting system Download PDFInfo
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- CN201318810Y CN201318810Y CNU2008201339516U CN200820133951U CN201318810Y CN 201318810 Y CN201318810 Y CN 201318810Y CN U2008201339516 U CNU2008201339516 U CN U2008201339516U CN 200820133951 U CN200820133951 U CN 200820133951U CN 201318810 Y CN201318810 Y CN 201318810Y
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- water tank
- solar thermal
- heat collection
- heat
- collection system
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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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Abstract
A freeze-proof solar energy heat collecting system comprises a heat collecting water tank (2), a heat collector (1) and a circulating water pump (71). The lower part of the heat collecting water tank is connected with the heat collector via a lower circulation pipe (62) of the heat collecting water tank while the upper part thereof is connected with the heat collector via an upper circulation pipe (61) of the heat collecting water tank, the circulating water pump (71) is arranged on the lower circulation pipe of the heat collecting water tank, and a valve (94) is connected in parallel with the circulating water pump on the lower circulation pipeline. The higher part of the solar energy heat collecting system is further provided with a high level liquid storage water tank (11), of which both the input end and the output end are connected with the upper circulation pipe of the heat collecting water tank; and the lower part of the solar energy heat collecting system is also provided with a low level liquid storage water tank (10), of which both the input end and the output end are connected with the lower circulation pipe of the heat collecting water tank. Liquid in the circulation pipeline can not cool down for congelation when in need of protection of frost, thereby being effectively freeze-proof, saving the energy, improving and prolonging the system reliability and the service life respectively.
Description
Technical field
The utility model relates to solar thermal collection system, especially avoids a kind of antifreeze solar thermal collection system that pipeline freezes when environment temperature is low.
Background technology
In the existing solar thermal collection system, the liquid that is exposed in the outdoor pipeline (comprising the pipeline of circulation pipe under the thermal-arrest heat collection water tank, thermal-arrest heat collection water tank upper circular tube and heat collector etc.) of cold can be owing to winter temperature is crossed low freezing, cause freeze stifled, even bursting by freezing can not use, and uses to the user and causes greater loss.
Under prior art,, adopt three kinds of solutions of electrical heating antifreezing and pipeline evacuation and anti-freezing and timed and forced circulation usually at above-mentioned frozen problem.First method is to install the electric tracing line outside pipeline additional, and water temperature may cause near 2 ℃ and freeze when stifled in detecting pipeline, and it is stifled to avoid pipeline to freeze to the heating of pipeline outer wall to start this electric tracing line automatically.In this scheme, enable the electric tracing line and need consume more electric energy, and passing in time, the start-up temperature detection sensitivity of electric tracing line can reduce, in most of the cases, the start-up temperature of open and close controlling can raise gradually, makes antifreeze cost rise significantly.
Second method under the prior art is: winter is with the solar thermal collection system water emptying in advance in the pipeline out of doors.As Chinese patent ZL200720022549.6 (denomination of invention: the solar water heater with defroster) just provide solar water heater with defroster, the heat collector water pipe stretches out on the heat collection water tank pipeline partly and is connected with evacuated tube, and the tail end of evacuated tube is equipped with exhaust-valve; When opening exhaust-valve, the water in the solar thermal collector pipeline is out of doors drained, thereby prevents that water is frozen in water pipe from freezing crack in the pipeline.Yet in this scheme, also must make the whole emptyings of the water in the solar thermal collection system pipeline heat wherein also loose in antifreeze, the temperature of recirculated water be difficult to obtain accumulation thereupon, and the efficient of annual solar energy heating is also on the low side significantly; In addition, the water temperature in the heat collection water tank of the long-term emptying water storage of system is higher, and bacterial growth is difficult to be suppressed, and is difficult to reach the hygienic quality that secondary cycle thermal-arrest mode is made hot water.
The third method is to adopt forced circulation antifreeze, promptly utilize the timed and forced circulation of water circulating pump to conduct heat and solve pre-antifreeze blocking up to outdoor pipeline, in this scheme, because solar thermal collection system water circulating pump load is big, often be in and start and "on" position will consume wearing and tearing and reduction service life of too much electric energy, increase water circulating pump, reduce the reliability of solar heat collecting and circulating system, in case water circulating pump breaks down, heat collector and pipeline will be damaged by bursting by freezing also will.
Summary of the invention
At above-mentioned defective, the utility model improves on prior art, and a kind of antifreeze solar thermal collection system is provided, can be effectively antifreeze, and again can be energy-conservation, stable, be improved service life.
For this reason, antifreeze solar thermal collection system of the present utility model is used for the solar thermal collection system of forced circulation.This antifreeze solar thermal collection system utilization increases liquid kinetic energy, the low level of heat collection water tank or system's lower is held liquid is transported to the high-order liquid storage water tank that is positioned at system's eminence in the liquid water tank; Utilize the nature drip then, make that liquid holds liquid water tank or heat collection water tank through the low level that system pipeline flows to system's lower in the above-mentioned high-order liquid storage water tank; Aforesaid liquid is carried and natural drip circulates again and again, makes the liquid in the pipeline that needs in the antifreeze solar thermal collection system be in flow regime all the time.
Find after deliberation: for the water that flows, except the molecular motion of itself, also has the kinetic energy that is converted by gravitional force, so, temperature will fetter, and will be not only molecular potential, also comprise kinetic energy, as long as it is enough low that environment temperature does not reach, the relative static balancing condition that making repels each other between hydrone equals to inhale does not mutually satisfy, and does not just tie ice.
Solar thermal collection system of the present utility model, adopting exactly increases kinetic energy with the pre-anti-freeze of the mode that does not allow level become quiet.Be with the solar thermal collection system difference of existing forced circulation: the utility model not only utilizes forced circulation to make liquid flow in the pipeline, also the liquid of low level is transported to a high position, after storing enough potential energy, feasible more high-order liquid, utilize the natural law of " Water seeks its own level ", make the water of eminence flow back to lower again, with potential energy converting and energy is kinetic energy, and this backflow, just rely on the gravity of water itself, belong to Natural Circulation, this moment, water circulating pump was not worked, and was freed.
In addition, owing in the heat collection water tank of solar thermal collection system heat-insulation layer is arranged, so the fluid temperature of heat collection water tank is generally higher.So just can make and be always the higher liquid of temperature in the solar thermal collection system pipeline, also effectively contain the generation of freezing.
Therefore, solar thermal collection system of the present utility model, can guarantee liquid that can not in the pipeline freeze cause freeze stifled.In addition, under the antifreeze situation of needs, just part utilizes water circulating pump to carry out forced circulation, and promptly water circulating pump is not in running order always.Obviously, less greatly energy loss, thus reach purpose of energy saving, also prolonged the service life of water circulating pump, increased the stability of whole system then.
The antifreeze solar thermal collection system that the utility model provides, comprise heat collection water tank, heat collector, water circulating pump, heat collection water tank bottom circulation pipe under heat collection water tank connects heat collector, heat collection water tank top connects heat collector through the heat collection water tank upper circular tube, circulation pipe is provided with water circulating pump under the heat collection water tank, under heat collection water tank on the circulation line and a water circulating pump valve in parallel; Eminence at above-mentioned solar thermal collection system also has high-order liquid storage water tank, high-order liquid storage water tank input, output all and the heat collection water tank upper circular tube connect; Also have low level at the lower of above-mentioned solar thermal collection system and hold the liquid water tank, low level holds that circulation pipe links under the equal and heat collection water tank of input, the output of liquid water tank.
In antifreeze solar thermal collection system of the present utility model, high-order liquid storage water tank input connects through two position three-way valve and heat collection water tank upper circular tube.Thereby function as follows: the heat collection water tank upper circular tube is in the both sides conducting of high-order liquid storage water tank input end and end, and high-order liquid storage water tank input and heat collection water tank upper circular tube are in a side (the water circulating pump pump water direction one side) conducting of high-order liquid storage water tank input end and end.
For make liquid flow in the pipeline steadily, high-order liquid storage water tank output can through the output dropping system and and the heat collection water tank upper circular tube connect.The output dropping system is the dropper of choke valve or band check valve.
In addition, low level holds the liquid water tank can adopt telescopic water tank, and for the sake of simplicity, input, output that low level holds the liquid water tank can unite two into one, and is combined into a simply connected and takes over, and circulation pipe links under valve and heat collection water tank.Heat collection water tank is the enclosed heat collection water tank, and and above-mentioned low level hold liquid water tank, valve, simply connected and take over and be integrated.
Obviously, solar thermal collection system of the present utility model, it both can be direct-type solar thermal collection system (i.e. cycle heat exchange solar thermal collection system, the water tank of configuration direct heat transfer), also can be indirect type solar thermal collection system (being secondary cycle heat exchange solar thermal collection system, the water tank of configuration secondary heat exchange).The direct-type solar thermal collection system is meant and directly adds the system that hot water is supplied with the user in solar thermal collector.The indirect type solar thermal collection system is meant certain heat-transfer working medium of heating in solar thermal collector, utilize heat-transfer working medium to pass through the system that the heat exchanger heats system supplies with the user again, the water tank that adopts in the indirect type solar thermal collection system is the secondary heat exchange water tank, helps ensureing the sanitary index of hot water.
When solar thermal collection system of the present utility model was the solar thermal collection system of a heat exchange, described heat collection water tank was the open type heat collection water tank, and was arranged on the below that low level holds the liquid water tank.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the principle schematic of the embodiment that adopts antifreeze solar thermal collection system of the present utility model;
Fig. 2 carries out the flow chart of preventing freeze in winter control for the embodiment that adopts of the present utility model antifreeze solar thermal collection system shown in Figure 1.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Fig. 1 illustrates the most preferred embodiment of a kind of antifreeze solar thermal collection system of the present utility model.This solar thermal collection system comprises heat collection water tank 2, heat collector 1, and heat collection water tank 2 bottoms connect heat collector by circulation pipe under the heat collection water tank 62, and heat collection water tank 2 tops connect heat collector by heat collection water tank upper circular tube 61.Circulation pipe 62 also is equipped with water circulating pump 71, valve 94 and water circulating pump 71 parallel connections near the exit of heat collection water tank 2 under the heat collection water tank.Heat collection water tank upper circular tube 61 is equipped with valve 96 near the input of heat collection water tank 2.Heat collector temperature sensor 81 is installed in the heat collector 1, water tank temperature sensor 82 is installed in the heat collection water tank, pipeline temperature sensor 83 is installed in the heat collection water tank upper circular tube 61.The top of heat collection water tank 2 also has circulation pipe 3 under the water of the making heat collection water tank, and the hot water of heat collection water tank 2 top memory can make circulation pipe 3 outflows under the water heat collection water tank by this; Heat collection water tank 2 bottoms are equipped with water inlet pipe 4, and this water inlet pipe 4 is used to connect external water source.
Eminence at above-mentioned solar thermal collection system also has high-order liquid storage water tank 11, the input of high-order liquid storage water tank 11 connects through two position three-way valve 97 and heat collection water tank upper circular tube 61, and the output of high-order liquid storage water tank connects through the medical dropper 99 and the heat collection water tank upper circular tube 61 of output dropping system such as choke valve or band check valve 98; Also have low level at the lower of above-mentioned solar thermal collection system and hold liquid water tank 10, it is telescopic water tank that low level holds the liquid water tank, and its input, the output simply connected that unites two into one is taken over, and circulation pipe 62 links under the unified and heat collection water tank through valve 95.
On the high-order liquid storage water tank 11 liquid level gauge 13 is installed, high-order liquid storage water tank 11 water levels are measured, and feed back to controller and minimum set height, the highest setting highly compare, control other components and parts then.
This embodiment is the solar thermal collection system of a heat exchange, and heat collection water tank 2 is open type heat collection water tanks, and is arranged on the below that low level holds liquid water tank 10.Heat collection water tank 2 tops have blast pipe 21.In addition, heat collection water tank 2 also can adopt the enclosed heat collection water tank, and and above-mentioned low level hold liquid water tank 10, valve 95, simply connected and take over and be integrated.
The pipeline water temperature of measuring when pipeline temperature sensor 83 is higher than the antifreeze temperature of reservation, promptly do not need when antifreeze, above-mentioned valve 94, high-order liquid storage water tank 11, low level hold liquid water tank 10 all and pipeline (circulation pipe 62 under heat collection water tank upper circular tube 61, the heat collection water tank) end, valve 96 conductings on the heat collection water tank upper circular tube 61, solar thermal collection system of the present utility model is still the forced circulation system under the prior art.Its course of work is as follows: detect the heat collector temperature and reach the default temperature difference (setting value when water tank temperature sensor 82 detects water tank temperature and heat collector temperature sensor 81, as 5 ℃) time, 71 work of controller control water circulating pump, water circulating pump 71 takes out the water of heat collection water tank 2 bottoms to heat collector 1, the water that flows is taken away the heat that passes through solar energy heating in the heat collector 1, and the top of process heat collection water tank upper circular tube 61 inflow heat collection water tanks 2, heat collection water tank 2 tops will increase the hot water through heating like this.After the hot water of heat collector 1 was replaced, the heat collector temperature reduced; When the above-mentioned temperature difference during less than certain default temperature difference, water circulating pump 71 quits work, and this moment, heat collector 1 utilized solar energy to heat collector 1 heating.Above-mentioned circulation is constantly carried out, and just can constantly obtain hot water for using in heat collection water tank 2.
Adopt the embodiment of this antifreeze solar thermal collection system, the control section of solar thermal collection system is in "on" position all the time, pipeline water temperature when 83 measurements of pipeline temperature sensor, as be lower than and subscribe antifreeze temperature when (as freezing point ,-0.5 ℃), valve 96 on the heat collection water tank upper circular tube 61 ends, the flow chart that carries out preventing freeze in winter control as shown in Figure 2, concrete steps are as follows:
Is (1) judge: high-order liquid storage water tank 11 liquid levels lower than the lowest water level of setting? if enter next step; If not, directly enter step (4);
(2) liquid is carried: connect the valve 94 in parallel with water circulating pump on the circulation pipe that connect, end under the heat collection water tank that heat collection water tank upper circular tube 61 and 11 in high-order liquid storage water tank, low level hold 62 of circulation pipes under liquid water tank 10 and the heat collection water tank, and starting water circulating pump 71, the liquid that low level is held in liquid water tank 10 or the heat collection water tank 2 pumps into high-order liquid storage water tank;
Are (3) judge: high-order liquid storage water tank 11 liquid levels higher than the peak level of setting? if enter next step; If not, return step (2);
(4) natural drip: the valve 94 in parallel that connect, connect under the heat collection water tank on the circulation pipe 62 that holds 62 of circulation pipes under liquid water tank 10 and the heat collection water tank by heat collection water tank upper circular tube 61 and 11 in high-order liquid storage water tank, low level with water circulating pump 71, close water circulating pump 71, make the liquid downward drip under the gravity effect in the high-order liquid storage water tank, circulation pipe inflow low level holds in liquid water tank 10 or the heat collection water tank 2 under heat collection water tank upper circular tube 61, heat collector and heat collection water tank;
Repeat above-mentioned steps (1), so circulation is gone down.
A kind of antifreeze solar thermal collection system of this embodiment when antifreeze the needs, allows the water in the pipeline flow all the time, has slowed down the generation of ice effectively.
In addition, owing in the heat collection water tank 2 heat-insulation layer is arranged, so the water temperature of heat collection water tank 2 is generally higher.So just can make and be always the higher water of temperature in the solar thermal collection system pipeline, also effectively contain the generation of ice.
A kind of antifreeze solar thermal collection system of this embodiment, can ensure water in the cold district solar thermal collection system pipeline can not freeze cause freeze stifled.In addition, under the antifreeze situation of needs, just part utilizes water circulating pump 71 to carry out forced circulation, and promptly water circulating pump 71 is not in running order always.Obviously, significantly reduce energy loss, thereby reached purpose of energy saving, also prolonged the service life of water circulating pump, increased the reliability of whole system then.
More than be one of embodiment of the present utility model,, do not spend performing creative labour, on the basis of the foregoing description, can do multiple variation, can realize the purpose of this utility model equally for those skilled in the art.But this variation obviously should be in the protection domain of claims of the present utility model.
Claims (8)
1, a kind of antifreeze solar thermal collection system, comprise heat collection water tank (2), heat collector (1), water circulating pump (71), heat collection water tank bottom circulation pipe (62) under heat collection water tank connects heat collector, heat collection water tank top connects heat collector through heat collection water tank upper circular tube (61), circulation pipe is provided with water circulating pump (71) under the heat collection water tank, it is characterized in that: under heat collection water tank on the circulation line and a water circulating pump valve (94) in parallel; Eminence at above-mentioned solar thermal collection system also has high-order liquid storage water tank (11), high-order liquid storage water tank input, output all and heat collection water tank upper circular tube (61) connect; Also have low level at the lower of above-mentioned solar thermal collection system and hold liquid water tank (10), low level holds that circulation pipe (62) links under the equal and heat collection water tank of input, the output of liquid water tank.
2, antifreeze solar thermal collection system as claimed in claim 1 is characterized in that: the input that heat collection water tank upper circular tube (61) is gone up near heat collection water tank (2) is equipped with valve (96); Above-mentioned valve (96) is in cut-off state when antifreeze solar thermal collection system carries out antifreeze control.
3, antifreeze solar thermal collection system as claimed in claim 1 is characterized in that: above-mentioned high-order liquid storage water tank (11) input connects through two position three-way valve (97) and heat collection water tank upper circular tube (61).
4, antifreeze solar thermal collection system as claimed in claim 3 is characterized in that: above-mentioned high-order liquid storage water tank (11) output connects through output dropping system and heat collection water tank upper circular tube (61).
5, antifreeze solar thermal collection system as claimed in claim 4, it is characterized in that: above-mentioned antifreeze solar thermal collection system as claimed in claim 1 is characterized in that: above-mentioned output dropping system is the dropper (99) of choke valve or band check valve (98).
6, antifreeze solar thermal collection system as claimed in claim 1, it is characterized in that: above-mentioned low level holds liquid water tank (10) and adopts telescopic water tank, input, output that low level holds the liquid water tank are combined into simply connected adapter, and circulation pipe (62) links under valve (95) and heat collection water tank.
7, antifreeze solar thermal collection system as claimed in claim 1, it is characterized in that: described solar thermal collection system is the solar thermal collection system of a heat exchange, described heat collection water tank (2) is the open type heat collection water tank, and is arranged on the below that low level holds the liquid water tank.
8, antifreeze solar thermal collection system as claimed in claim 6 is characterized in that: described heat collection water tank (2) is the enclosed heat collection water tank, and and above-mentioned low level hold liquid water tank (10), valve (95), simply connected and take over and be integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201339516U CN201318810Y (en) | 2008-09-18 | 2008-09-18 | Freeze-proof solar energy heat collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201339516U CN201318810Y (en) | 2008-09-18 | 2008-09-18 | Freeze-proof solar energy heat collecting system |
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| Publication Number | Publication Date |
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| CN201318810Y true CN201318810Y (en) | 2009-09-30 |
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| CNU2008201339516U Expired - Fee Related CN201318810Y (en) | 2008-09-18 | 2008-09-18 | Freeze-proof solar energy heat collecting system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990495A (en) * | 2018-01-03 | 2019-07-09 | 殷震雄 | A kind of photovoltaic solar hot-water heating system |
| CN112066577A (en) * | 2020-09-11 | 2020-12-11 | 孟子越 | Solar flat plate type anti-freezing heat collector |
| CN113266864A (en) * | 2021-04-21 | 2021-08-17 | 日出东方控股股份有限公司 | Solar energy layering heat accumulation water tank and system thereof |
| CN114322332A (en) * | 2022-01-20 | 2022-04-12 | 青岛酒店管理职业技术学院 | Solar collector system for melting ice |
| CN114322333A (en) * | 2022-01-20 | 2022-04-12 | 青岛酒店管理职业技术学院 | Solar water heater system with auxiliary heating function |
-
2008
- 2008-09-18 CN CNU2008201339516U patent/CN201318810Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990495A (en) * | 2018-01-03 | 2019-07-09 | 殷震雄 | A kind of photovoltaic solar hot-water heating system |
| CN112066577A (en) * | 2020-09-11 | 2020-12-11 | 孟子越 | Solar flat plate type anti-freezing heat collector |
| CN113266864A (en) * | 2021-04-21 | 2021-08-17 | 日出东方控股股份有限公司 | Solar energy layering heat accumulation water tank and system thereof |
| CN114322332A (en) * | 2022-01-20 | 2022-04-12 | 青岛酒店管理职业技术学院 | Solar collector system for melting ice |
| CN114322333A (en) * | 2022-01-20 | 2022-04-12 | 青岛酒店管理职业技术学院 | Solar water heater system with auxiliary heating function |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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