CN102645029A - Solar water heater capable of preventing freezing, overheating and heat dissipation - Google Patents

Solar water heater capable of preventing freezing, overheating and heat dissipation Download PDF

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Publication number
CN102645029A
CN102645029A CN2012101090364A CN201210109036A CN102645029A CN 102645029 A CN102645029 A CN 102645029A CN 2012101090364 A CN2012101090364 A CN 2012101090364A CN 201210109036 A CN201210109036 A CN 201210109036A CN 102645029 A CN102645029 A CN 102645029A
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CN
China
Prior art keywords
magnetic valve
way magnetic
attemperater
solar
water
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Pending
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CN2012101090364A
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Chinese (zh)
Inventor
袁同斌
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SHANGHAI ZHAIYUAN NEW ENERGY TECHNOLOGY Co Ltd
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SHANGHAI ZHAIYUAN NEW ENERGY TECHNOLOGY Co Ltd
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Priority to CN2012101090364A priority Critical patent/CN102645029A/en
Publication of CN102645029A publication Critical patent/CN102645029A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The invention relates to the technical field of solar water heaters, in particular to a solar water heater capable of preventing freezing, overheating and heat dissipation, which comprises a solar collector, a water inlet pipe, a water outlet pipe and a heat-preserving water tank. The solar collector is connected with the heat-preserving water tank by the water inlet pipe, the water outlet pipe. A three-way electromagnetic valve I is arranged in the water inlet pipe. The water inlet of the three-way electromagnetic valve I is connected with the solar collector. The water outlet of the three-way electromagnetic valve I is connected with the heat-preserving water tank, a non-pressure storage tank or a floor drain. A three-way electromagnetic valve II is arranged in the water outlet pipe. The water outlet of the three-way electromagnetic valve II is connected with the solar collector. The water inlet of the three-way electromagnetic valve II is connected with the heat-preserving water tank, the non-pressure storage tank or the floor drain. The three-way electromagnetic valve I and the three-way electromagnetic valve II are connected with a control device through lines. Compared with the prior art, the solar water heater has the advantages that not only can freezing, overheating and heat dissipation be prevented, but also the use comfort is good, the lump-sum investment is small, the cost is reduced and the operating efficiency is improved.

Description

A kind of three anti-solar water heaters
[technical field]
The present invention relates to technical field of solar water heaters, specifically a kind of three anti-solar water heaters.
[background technology]
At present the solar energy hot product mainly is divided into: 1. do not have pressure type all-in-one, 2. pressure-bearing type all-in-one, 3. pressure-bearing type split air conditioner.Wherein do not have the pressure type all-in-one, water tank and photo-thermal plate are formed one, and water tank does not bear pressure, and this product is the low-end market use in the rural area, because it uses inconvenience, comfort level is poor, and the limitation of mounting condition can not be popularized in the city; Though the pressure-bearing type all-in-one has solved comfort level and awkward problem, mounting condition is still limited to, and can not popularize in the city; The pressure-bearing type split air conditioner is owing to the problem that has solved the mounting condition restriction, and comfort is good, can in life of urban resident, be generalizable.The pressure-bearing type split air conditioner is divided into again: once circulate secondary heat exchange formula and pressure-bearing split secondary cycle secondary heat exchange formula of circulation primary heat exchange type of pressure-bearing split, pressure-bearing split (is commonly called as: the reverse-flow type solar water heater).
More than three types of solar water heaters remove secondary cycle secondary heat exchange formula (reverse-flow type solar water heater) and all have following problem: one, overheated: summer solar illuminance strong, the sunshine-duration is long, surface water temperature height; Solar energy optical-thermal conversion amount is more than needed, causes the water tank whole system overheated, causes pressure and raises; Temperature raises; Each seal of destruction system, damage water tank, reduce product service life, cause safety valve frequently to open, the sun falls system temperature to be reduced system pressure and descends; Cold water covers the reduction water tank temperature, and influence is used; Use water tank hot water the impact and the noise of water hammer can occur for the split type circulation primary heat exchange product of pressure-bearing under HTHP, has had a strong impact on serviceability; Product for the secondary heat exchange that once circulates also can be owing to the overheated circulatory mediator that causes gasifies; Circulatory mediator is obstructed from the circulatory mediator disappearance circulation that air bleeding valve releases the system of causing; System quits work, and water tank can't absorb heat and solar thermal collector can't be converted to water tank with the heat that absorbs, and the temperature of system can sharply raise; So vicious circle, system will thoroughly destroy.Two, heat radiation: have under the sun situation; The photo-thermal conversion heat can constantly pass to storage tank through pump circulation or Natural Circulation, and to not having the cloudy day or the night of the sun, solar thermal collector does not have sunshine and can absorb; If water tank causes convection current under the effect of the circulatory mediator in the circulation line at water tank temperature being heated under the keeping warm mode; The solar thermal collector of this moment has become radiator, and the heat of water tank is constantly spread in air through solar thermal collector and circulation line under the ringing of circulatory mediator, makes the storing heat loss of water tank strengthen; Reduce available hot water, lowered the overall efficiency of system.Three, the damage of freezing winter: at the sleet season and the cloudy day that do not have the sun; Environment temperature is lower than the freezing point of circulatory mediator, can cause the circulatory mediator of system to freeze, and whole system is damaged; Even if system has adopted secondary to exchange antifreeze circulatory mediator; Part has solved antifreeze problem, but its radiation loss is also very serious, and loses heat was about 50% of whole water tank storing heat in 24 hours.
And pressure-bearing split secondary cycle secondary heat exchange formula (is commonly called as: the reverse-flow type solar water heater); Though do not have above-mentioned overheated, heat radiation and freeze winter and damage three problems, owing to need two circulating pumps of configuration, secondary heat exchange device and 40L attemperater in its system, one of them circulating pump is the open circulation pump; Its lift will be more than the 10-20m water column; Thereby cost is than higher, and disposable having high input used very uneconomical.
[summary of the invention]
The object of the invention is exactly will solve above-mentioned deficiency and a kind of three anti-solar water heaters are provided, not only can antifreeze, anti-overheated, anti-heat radiation, and also easy for installation; Comfort is good, and disposable input is little, has reduced cost; Operation is renderd a service high, and is very economical and practical.
For realizing that above-mentioned purpose designs a kind of three anti-solar water heaters; Comprise solar thermal collector 1, inlet channel 2, outlet conduit 3 and attemperater 5; Said solar thermal collector 1 links to each other with attemperater 5 through inlet channel 2, outlet conduit 3; Be provided with three-way magnetic valve I 6 in the said inlet channel 2, said three-way magnetic valve I water inlet 61 connects solar thermal collector 1, and said three-way magnetic valve I delivery port 63 connects attemperater 5; Said three-way magnetic valve I delivery port 62 connects does not have the storage tank 7 of pressure or floor drain 20; Be provided with three-way magnetic valve II8 in the said outlet conduit 3, said three-way magnetic valve II delivery port 81 connects solar thermal collector 1, and said three-way magnetic valve II water inlet 83 connects attemperater 5; Said three-way magnetic valve II water inlet 82 connects does not have the storage tank 7 of pressure or floor drains 20, and said three-way magnetic valve I 6, three-way magnetic valve II8 are through the line connection control device.
Said control device comprises controller 9 and high-temperature protector 10, and said controller 9 and high-temperature protector 10 are connected by circuit, and said three-way magnetic valve I 6, three-way magnetic valve II8 pass through line connecting controller 9.
Be provided with electrically heated rod 16 in the said attemperater 5, said electrically heated rod 16 is installed on the inwall of attemperater 5, and said electrically heated rod 16 is through line connecting controller 9.
In the said outlet conduit 3 circulating pump 4 is installed, said circulating pump 4 is through line connecting controller 9.
On the said solar thermal collector 1 heat collector temperature sensor 11 is housed; Water tank upper temperature sensor 12 is equipped with at said attemperater 5 inner and upper places; Water tank temperature of lower sensor 13 is equipped with at place, said attemperater 5 inner below; Environment temperature sensor 14 is equipped with at said controller 9 places, on said circulating pump 4 shells pump temperature sensor 15 is housed.
The exit of circulating pump 4 is equipped with electronic flow switch or mechanical flow balanced valve 19 in the said outlet conduit 3.
Air bleeding valve 17 is equipped with in said solar thermal collector 1 upper end, and said air bleeding valve 17 links to each other with inlet channel 2.
Be provided with check valve 18 in the said inlet channel 2, said check valve 18 is installed in three-way magnetic valve I delivery port 63 places.
Said attemperater 5 connects no pressure tank 21 through pipeline.
Be provided with two three-way electromagnetic valves 22 in the said outlet conduit 3, said two three-way electromagnetic valves 22 link to each other with floor drain 20.
The present invention compares with prior art, has following advantage:
1. reduce the solar water heater radiation loss, improved the operation of solar water heater and renderd a service, solved the anti-heat dissipation problem of solar water heater;
2. prevented to freeze when solar water heater from not having sunshine a winter and damaged, solved the antifreeze problem of solar water heater;
3. prevent that the sunshine-duration in summer is long, intensity of solar radiation is high, and the tap water supply temperature is high in addition, and the hot water consumption causes solar water heater water tank and system overheat for a short time, damages seal and water tank,, solved the anti-problems of excessive heat of solar water heater;
4. the present invention compares with pressure-bearing split secondary cycle secondary heat exchange formula; Owing to omitted secondary heat exchange device, above circulating pump and the 40L attemperater of 10-20m water column; But be provided with two two-position three way magnetic valves; Thereby disposable input is little, has reduced cost, has solved the three big defectives that solar water heater is overheated, dispel the heat, freeze with most economical method easily;
5. the solar water heater with attemperater volume 270L is an example; Under the out-of-work keeping warm mode of spring and autumn node solar heat collector; The ringing that the circulatory mediator temperature difference in the pipeline causes was about 3KWH in 24 hours through the heat of solar thermal collector and circulation line diffusion, and 24 hours winters, the heat of diffusion was about 6KWH, accounted for the 20%-50% that whole solar energy system absorbs heat respectively; And the present invention has then thoroughly stopped this loss when system is in the standby keeping warm mode.
[description of drawings]
Fig. 1 is structural representation one of the present invention (three anti-, split, water tank underlying pressure-bearing solar water heater);
Fig. 2 is the wiring schematic diagram of Fig. 1;
Fig. 3 is structural representation two of the present invention (three anti-one, a dull and stereotyped pressure-bearing solar water heater);
Fig. 4 is structural representation three of the present invention (three anti-one, a heat pipe pressure-bearing solar water heater);
Fig. 5 is structural representation four of the present invention (three anti-one, a dull and stereotyped non-pressure-bearing solar water heater);
Fig. 6 is structural representation five of the present invention (three anti-one, the non-pressure-bearing solar water heater of vacuum tube);
Fig. 7 is structural representation six of the present invention (putting pressure-bearing solar water heater on three anti-splits, heat pipe, the water tank);
Among the figure: 1; Solar thermal collector 2; Inlet channel 3; Outlet conduit 4; Circulating pump 5; Attemperater 6; Three-way magnetic valve I 7; There is not the storage tank 8 of pressure; Three-way magnetic valve II 9; Controller 10; High-temperature protector 11; Heat collector temperature sensor 12; Water tank upper temperature sensor 13; Water tank temperature of lower sensor 14; Environment temperature sensor 15; Pump temperature sensor 16; Electrically heated rod 17; Air bleeding valve 18; Check valve 19; Electronic flow switch or mechanical flow balanced valve 20; Floor drain 21; No pressure tank 22; Two three-way electromagnetic valves 61; Three-way magnetic valve I water inlet 62; Three-way magnetic valve I delivery port 63; Three-way magnetic valve I delivery port 81; Three-way magnetic valve II delivery port 82; Three-way magnetic valve II water inlet 83; Three-way magnetic valve II water inlet.
[specific embodiment]
Further specify below below in conjunction with accompanying drawing the present invention being done:
Shown in accompanying drawing 1 and accompanying drawing 2; For: " three anti-, split, water tank underlying pressure-bearing solar water heater "; Comprise: solar thermal collector 1, inlet channel 2, outlet conduit 3 and attemperater 5, said solar thermal collector 1 links to each other with attemperater 5 through inlet channel 2, outlet conduit 3, is provided with three-way magnetic valve I 6 in the said inlet channel 2; Said three-way magnetic valve I water inlet 61 connects solar thermal collector 1; Said three-way magnetic valve I delivery port 63 connects attemperater 5, and said three-way magnetic valve I delivery port 62 connects does not have the storage tank 7 of pressure, is provided with three-way magnetic valve II 8 in the said outlet conduit 3; Said three-way magnetic valve II delivery port 81 connects solar thermal collector 1; Said three-way magnetic valve II water inlet 83 connects attemperaters 5, and said three-way magnetic valve II water inlet 82 connects does not have the storage tanks 7 of pressure, and said three-way magnetic valve I 6, three-way magnetic valve II8 are through the line connection control device.Said control device comprises controller 9 and high-temperature protector 10, and said controller 9 and high-temperature protector 10 are connected by circuit, and said three-way magnetic valve I 6, three-way magnetic valve II8 pass through line connecting controller 9.Be provided with electrically heated rod 16 in the said attemperater 5, said electrically heated rod 16 is installed on the inwall of attemperater 5, and said electrically heated rod 16 is through line connecting controller 9.In the said outlet conduit 3 circulating pump 4 is installed, said circulating pump 4 is through line connecting controller 9.On the said solar thermal collector 1 heat collector temperature sensor 11 is housed; Water tank upper temperature sensor 12 is equipped with at said attemperater 5 inner and upper places; Water tank temperature of lower sensor 13 is equipped with at place, said attemperater 5 inner below; Environment temperature sensor 14 is equipped with at said controller 9 places, on said circulating pump 4 shells pump temperature sensor 15 is housed.The exit of circulating pump 4 is equipped with electronic flow switch or mechanical flow balanced valve 19 in the said outlet conduit 3, and said electronic flow switch or mechanical flow balanced valve are through line connecting controller 9.Air bleeding valve 17 is equipped with in said solar thermal collector 1 upper end, and said air bleeding valve 17 links to each other with inlet channel 2.Be provided with check valve 18 in the said inlet channel 2, said check valve 18 is installed in three-way magnetic valve I delivery port 63 places.
When said solar water heater is in the insulation holding state; The attemperater circulation port is closed; The circulating line beyond the attemperater and the turnover recirculated water of solar thermal collector are drained; Like the per 10 meters long pipe runs water capacity 1.77L of DN15 pipeline, after can collecting, the water of discharge is used for other purposes, by circulating pump water is pumped into system again in the time of also can in the system of circulating pump is arranged, working.Circulation line is in no circulatory mediator state, and the inlet channel and the outlet conduit that are connected with attemperater are closed, so can effectively prevent: the heat radiation, overheated, freeze.When attemperater need heat once more, via controller was judged, and solar thermal collector satisfies the heat supply running condition; Then three-way magnetic valve I and three-way magnetic valve II switching-over; The emptying pipeline is closed, and closed circuit and attemperater path are opened, system pipeline and solar thermal collector under tap water pressure by fills with water; The pipeline air is discharged through air bleeding valve automatically, and system starts working.If any circulating pump; Postpone one minute, circulating pump is opened, and solar energy system begins heating; After waiting to satisfy the attemperater design temperature; System pipeline and attemperater path are closed, and system does not connect with having the storage tank of pressure or floor drain, and the solar thermal collector upper end peak on system top is provided with air bleeding valve and atmosphere.The water of systemic circulation pipeline and solar thermal collector is all got back to water tank or floor drain under the gravity effect, system is in holding state once more, so repeatedly.Under holding state, utilize the method for the automatic emptying of circulatory mediator, stopped system overheat, heat radiation effectively, frozen.
Shown in accompanying drawing 3 to accompanying drawing 7; " circulatory mediator exhaust method " can be used in except that solar thermal collector directly inserts anyly the cistern system has an externally hydronic solar energy system of pipeline of circulatory mediator; I.e. " three anti-one, dull and stereotyped pressure-bearing solar water heater " shown in accompanying drawing 3; " three anti-one, heat pipe pressure-bearing solar water heater " shown in the accompanying drawing 4; " three anti-one, dull and stereotyped non-pressure-bearing solar water heater " shown in the accompanying drawing 5, " three anti-one, the non-pressure-bearing solar water heater of vacuum tube " shown in the accompanying drawing 6, " the putting pressure-bearing solar water heater on three anti-splits, heat pipe, the water tank " shown in the accompanying drawing 7.In accompanying drawing 3 to the accompanying drawing 7, three-way magnetic valve I6 delivery port connects floor drain 20, and three-way magnetic valve II8 water inlet connects floor drain 20; Accompanying drawing 5 is connected no pressure tank 21 with attemperater in the accompanying drawing 6 through pipeline; Be provided with two three-way electromagnetic valves 22 in the outlet conduit 3 in the accompanying drawing 7, this two three-way electromagnetic valve 22 links to each other with floor drain 20, helps the circulatory mediator emptying.
Among the present invention, the temperature of heat collector temperature sensor is that the temperature of T1, water tank upper temperature sensor is that the temperature of T2, water tank temperature of lower sensor is that the temperature of T3, environment temperature sensor is T4, and the temperature of pump temperature sensor is T5.
The operation principle of attaching illustrated in figures 1 and 2 " three anti-, split, water tank underlying pressure-bearing solar water heater " is:
When: T1>T4, T3 less than 5 ℃ of attemperater design temperatures, (T1-T3)>10 ℃; Controller is given three-way magnetic valve I and three-way magnetic valve II energising; Three-way magnetic valve I: three-way magnetic valve I water inlet 61-three-way magnetic valve I delivery port 63 is logical; Three-way magnetic valve I water inlet 61-three-way magnetic valve I delivery port 62 closes three-way magnetic valve II: three-way magnetic valve II delivery port 81-three-way magnetic valve II water inlet 83 is logical, and three-way magnetic valve II delivery port 81-three-way magnetic valve II water inlet 82 closes; From the trend system water supplement, discharge automatically through air bleeding valve by system air under the tap water pressure effect for attemperater, and 30m long pipe runs rate of water make-up is about 5.3L (the every 10m of pipeline, rate of water make-up 1.76L).Three-way magnetic valve I and three-way magnetic valve II get electric back and postpone 120 seconds, and 120 seconds filled water amounts are greater than 16L, and 16L is far longer than the water yield 5.3L that system need inject; Thereby guarantee system's fills with water, circulating pump is opened, and system gets into duty; And inspection in good time, T1 whether greater than T3 more than 10 ℃, whether T2 more than or equal to the attemperater design temperature; Whether T5 surpasses T3 has 15 ℃ of i.e. (T5-T3)>15 ℃, if: (T5-T3)>15 ℃, then system's operation is undesired; Circulating pump possibly dally, and system provides warning, and switches to the fault holding state.Here, when (T5-T3)>15 ℃, it is undesired to be system's operation, circulating pump idle running, and the accuracy of these data can obtain through further test.As: said outlet conduit outlet of circulating pump place is equipped with the electronic flow switch, also can judge running situation through flow switch: whether circulating pump dallies and the flow size.
When: T2 >=attemperater design temperature; System's operation stops, and controller switches to holding state, thereby circulating pump is out of service; Three-way magnetic valve I: three-way magnetic valve I water inlet 61-three-way magnetic valve I delivery port 62 is logical; Three-way magnetic valve I water inlet 61-three-way magnetic valve I delivery port 63 closes three-way magnetic valve II: three-way magnetic valve II water inlet 82-three-way magnetic valve II delivery port 81 is logical, and three-way magnetic valve II water inlet 83-three-way magnetic valve II delivery port 81 closes; The circulatory system is closed, attemperater be in the system isolation under be incubated, effectively stop the heat radiation of system.System's inlet channel and outlet conduit pass through three-way magnetic valve I: three-way magnetic valve I water inlet 61-three-way magnetic valve I delivery port 62 logical, three-way magnetic valve II: three-way magnetic valve II water inlet 82-three-way magnetic valve II delivery port 81 is logical; And press storage tank to link to each other with nothing; The solar thermal collector top is provided with air bleeding valve and atmosphere; So under weight; The about 5.3L of water in the system can all empty to and do not have press that system is in no circulatory mediator state in the storage tank, like this with regard to prevent effectively that locking system is freezing in the winter time, summer under illumination in the overheated and system circulatory mediator under the driving of temperature difference, form convection current, through problems such as solar thermal collector heat radiations.
When: T2 was lower than 5 ℃ of attemperater design temperatures, system condition satisfied T1>T4, T1-T3>10 ℃ once more, and system moves once more by working procedure and restarts.So repeatedly, system opens, stops to switch 1-2 time every day generally speaking.
When: T2 is lower than 5 ℃ of attemperater design temperatures, and system condition does not satisfy T1>T4 and T1-T3>10 ℃, explains that then cloudy solar thermal collector can not work, and the circulatory system is closed, and attemperater is in the auxiliary work down of electrically heated rod; As overcast to clear, condition is in case satisfied, and then electrically heated rod withdraws from immediately, and system can automatically switch to the solar energy heating state by abovementioned steps.
In addition; System drains into not have under holding state and presses the water such as the need of storage tank to reuse; Then need: 1. circulating pump does not have below the storage tank of pressure not having must circulating pump be installed under the journey of the suction situation; 2. the circulating pump lift must differ from more than 1.5 times greater than solar thermal collector and attemperater setting height(from bottom), and 3. reprogramming is before operation: three-way magnetic valve I: three-way magnetic valve I water inlet 61 closes with three-way magnetic valve I delivery port 62, and three-way magnetic valve I water inlet 61 is logical with three-way magnetic valve I delivery port 63; Three-way magnetic valve II: three-way magnetic valve II water inlet 82 is logical with three-way magnetic valve II delivery port 81, and three-way magnetic valve II water inlet 83 closes with three-way magnetic valve II delivery port 81; The ON cycle pump; Move 60 seconds, will not have the tank water of pressure and refill system, after 60 seconds; Three-way magnetic valve II: three-way magnetic valve II water inlet 82 closes with three-way magnetic valve II delivery port 81; Three-way magnetic valve II water inlet 83 is logical with three-way magnetic valve II delivery port 81, and three-way magnetic valve I keeps: three-way magnetic valve I water inlet 61 closes with three-way magnetic valve I delivery port 62, and three-way magnetic valve I water inlet 61 is logical with three-way magnetic valve I delivery port 63.Circulating pump continues operation, and detects T1, T2, T3, T4, T5 through controller in good time, according to the operation logic relation keep operation withdraw from standby or protection or electrically heated rod auxiliary.
The operation principle of accompanying drawing 3 to accompanying drawing 7 and accompanying drawing 1 are basic identical with the operation principle shown in the accompanying drawing 2, and the difference part only is that accompanying drawing 1 and the system shown in the accompanying drawing 2 pass through the circulating pump forced circulation, and the system shown in accompanying drawing 3 to the accompanying drawing 7; Attemperater is on solar thermal collector top, and circulatory mediator (water) forms free convection under the effect of temperature difference; Do not need circulating pump; Its principle is summarized as follows: two three-way magnetic valves or three magnetic valves (in three magnetic valves: one of them is two three-way electromagnetic valves, and two is three-way magnetic valve in addition) are installed by system, during standby; Three-way magnetic valve or three-way magnetic valve and two three-way electromagnetic valves switch to through controller: the passage of evacuation port is opened; Medium (water) in the pathway closure of attemperater and circulation line, circulation line is drained, thereby reaches the purpose of " three is anti-"; Magnetic valve switches to through controller during operation: the passage of attemperater and circulation line is opened; The pathway closure of evacuation port; Medium (water) is through temperature difference Natural Circulation in the pipeline between solar thermal collector and the attemperater; Absorb heat thereby make solar thermal collector pass through the photo-thermal conversion, transmit to the top attemperater endlessly, finally reach the purpose of heat absorption, heat accumulation.
Among the present invention; Accompanying drawing 3 to accompanying drawing 7; Represented to use this principle and prevented the example schematic diagram that (antifreeze, anti-overheated, anti-heat radiation) function is used in integral type and separated type solar water heater (water tank is on heat collector top) pressure-bearing and unpressurized three; Its operation principle and accompanying drawing 1 is basic identical with accompanying drawing 2, its central principle also be through two three-way magnetic valves (or two three-way magnetic valves and one two three-way electromagnetic valve) switch in standby the time open evacuation port pipeline, emptying circulatory mediator (water); Close attemperater simultaneously and import and export circulation canal, reach three anti-purposes.Evacuation port is closed in switching through three-way magnetic valve during operation, opens circulation port, system in water tank under the tap water pressure effect, top-off cycle medium (water).Medium is Natural Circulation under action of thermal difference, accomplishes the purpose to the attemperater heating.This three anti-integral type and separated type solar water heater (water tank is on heat collector top) are compared with three anti-separated type solar water heaters (water tank is in the heat collector bottom); Advantage is: can not use circulating pump; The same purpose of accomplishing the heat of solar thermal collector toward the attemperater transmission, its detailed operation principle this paper does not remake further elaboration.
The present invention does not receive the restriction of above-mentioned embodiment, and other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify, and all should be the substitute mode of equivalence, is included within protection scope of the present invention.

Claims (10)

1. prevent solar water heater for one kind three; Comprise solar thermal collector (1), inlet channel (2), outlet conduit (3) and attemperater (5); Said solar thermal collector (1) links to each other with attemperater (5) through inlet channel (2), outlet conduit (3); It is characterized in that: be provided with three-way magnetic valve I (6) in the said inlet channel (2), said three-way magnetic valve I water inlet (61) connects solar thermal collector (1), and said three-way magnetic valve I delivery port (63) connects attemperater (5); Said three-way magnetic valve I delivery port (62) connects does not have the storage tank (7) of pressure or floor drain (20); Be provided with three-way magnetic valve II (8) in the said outlet conduit (3), said three-way magnetic valve II delivery port (81) connects solar thermal collector (1), and said three-way magnetic valve II water inlet (83) connects attemperater (5); Said three-way magnetic valve II water inlet (82) connects does not have the storage tank (7) of pressure or floor drain (20), and said three-way magnetic valve I (6), three-way magnetic valve II (8) are through the line connection control device.
2. as claimed in claim 1 three anti-solar water heaters; It is characterized in that: said control device comprises controller (9) and high-temperature protector (10); Said controller (9) is connected by circuit with high-temperature protector (10), and said three-way magnetic valve I (6), three-way magnetic valve II (8) are through line connecting controller (9).
3. according to claim 1 or claim 2 three anti-solar water heaters; It is characterized in that: be provided with electrically heated rod (16) in the said attemperater (5); Said electrically heated rod (16) is installed on the inwall of attemperater (5), and said electrically heated rod (16) is through line connecting controller (9).
4. as claimed in claim 3 three anti-solar water heaters is characterized in that: circulating pump (4) is installed in the said outlet conduit (3), and said circulating pump (4) is through line connecting controller (9).
5. as claimed in claim 4 three anti-solar water heaters; It is characterized in that: heat collector temperature sensor (11) is housed on the said solar thermal collector (1); Water tank upper temperature sensor (12) is equipped with at said attemperater (5) inner and upper place; Water tank temperature of lower sensor (13) is equipped with at place, the inner below of said attemperater (5), and said controller (9) locates to be equipped with environment temperature sensor (14), on said circulating pump (4) shell pump temperature sensor (15) is housed.
6. as claimed in claim 5 three anti-solar water heaters, it is characterized in that: the exit of circulating pump (4) is equipped with electronic flow switch or mechanical flow balanced valve (19) in the said outlet conduit (3).
7. as claimed in claim 6 three anti-solar water heaters is characterized in that: air bleeding valve (17) is equipped with in said solar thermal collector (1) upper end, and said air bleeding valve (17) links to each other with inlet channel (2).
8. as claimed in claim 7 three anti-solar water heaters, it is characterized in that: be provided with check valve (18) in the said inlet channel (2), said check valve (18) is installed in three-way magnetic valve I delivery port (63) and locates.
9. as claimed in claim 1 three anti-solar water heaters, it is characterized in that: said attemperater (5) connects no pressure tank (21) through pipeline.
10. as claimed in claim 1 three anti-solar water heaters, it is characterized in that: be provided with two three-way electromagnetic valves (22) in the said outlet conduit (3), said two three-way electromagnetic valves (22) link to each other with floor drain (20).
CN2012101090364A 2012-04-13 2012-04-13 Solar water heater capable of preventing freezing, overheating and heat dissipation Pending CN102645029A (en)

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CN2012101090364A CN102645029A (en) 2012-04-13 2012-04-13 Solar water heater capable of preventing freezing, overheating and heat dissipation

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN109186104A (en) * 2018-08-08 2019-01-11 西安建筑科技大学 A kind of antifreeze anti-thermal change inclination angle heat collector excessively

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CN1837711A (en) * 2005-03-25 2006-09-27 海尔集团公司 Split type solar water heater
CN2842309Y (en) * 2005-11-10 2006-11-29 安徽日源环保能源科技有限公司 The separated type solar water heater
CN101033889A (en) * 2006-03-09 2007-09-12 海尔集团公司 Leakage of water proof split pressure-bearing directly cycling solar water heater
CN201373577Y (en) * 2009-01-22 2009-12-30 刘军 Multi-detection point temperature control water heater

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JPS5817269A (en) * 1981-07-20 1983-02-01 Saginomiya Seisakusho Inc Freezing prevention three-way valve
DE4318480A1 (en) * 1993-06-03 1994-12-08 Bernhard Meucht Thermostatic frost protection for solar installations
CN2180689Y (en) * 1993-06-25 1994-10-26 通昌县经济技术开发中心 Miniature automactic water supply device
CN2718462Y (en) * 2004-01-14 2005-08-17 张雪祥 Pipe evacuation atmospheric self-compensating pressure-bearing solar water heater tank
CN1837711A (en) * 2005-03-25 2006-09-27 海尔集团公司 Split type solar water heater
CN2842309Y (en) * 2005-11-10 2006-11-29 安徽日源环保能源科技有限公司 The separated type solar water heater
CN101033889A (en) * 2006-03-09 2007-09-12 海尔集团公司 Leakage of water proof split pressure-bearing directly cycling solar water heater
CN201373577Y (en) * 2009-01-22 2009-12-30 刘军 Multi-detection point temperature control water heater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105333626A (en) * 2015-12-08 2016-02-17 杨敏杰 Safe high-efficiency solar water heating system
CN109186104A (en) * 2018-08-08 2019-01-11 西安建筑科技大学 A kind of antifreeze anti-thermal change inclination angle heat collector excessively
CN109186104B (en) * 2018-08-08 2020-06-30 西安建筑科技大学 Anti-freezing and anti-overheating variable-inclination-angle heat collector

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Application publication date: 20120822