CN102734959B - Automatic water-filling and pressure-bearing solar water heater and water-filling control method thereof - Google Patents
Automatic water-filling and pressure-bearing solar water heater and water-filling control method thereof Download PDFInfo
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- CN102734959B CN102734959B CN201210222392.7A CN201210222392A CN102734959B CN 102734959 B CN102734959 B CN 102734959B CN 201210222392 A CN201210222392 A CN 201210222392A CN 102734959 B CN102734959 B CN 102734959B
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- collecting header
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The invention relates to an automatic water-filling and pressure-bearing solar water heater and a water-filling control method thereof, and belongs to the technical field of household appliances. The water heater comprises a water tank, a heat collecting header, a circulation pipeline and a control circuit, wherein the water tank and the heat collecting header are respectively provided with a first temperature sensor and a second temperature sensor; a liquid level sensor is arranged at a preset position of the water tank; a signal output end of the control circuit controls switch-on and switch-off of a controlled end of an actuator; the control circuit acquires a water temperature value of the water tank at regular time and automatically supplements a heat exchange medium at proper time by intelligent control, so that phenomenon that a vacuum tube is exploded because of large temperature change is completely avoided, a system runs safely and reliably, and the water tank is protected.
Description
Technical field
The present invention relates to a kind of solar water heater, especially a kind of automatic liquid supply pressure-bearing type solar water heater and water compensating control method thereof, belong to technical field of solar utilization technique.
Background technology
According to the applicant understood, existing pressure-bearing type solar water heater can be divided into according to the difference of heat exchange endless form:
1. forced cyclic type: make heat transferring medium forced circulation between heat collector and heat storage water tank by circulating pump.Advantage is: heat storage water tank can be positioned at any position, installation is relatively attractive in appearance.Shortcoming is: system complex and cost are high, because collecting system is pressure-bearing enclosed, so need regular replenishment heat transferring medium after system operation 2-3;
2. natural recirculating type: system adopts thermosiphon principle, and heat transferring medium is Natural Circulation heat exchange between heat collector and heat storage water tank.Advantage is: system is relatively simple, and cost is lower than forced circulation system.Shortcoming is: because collecting system is pressure-bearing enclosed, so need regular replenishment heat transferring medium after system operation 2-3, because heat collector is enclosed, system cost is still higher.
Although lack of water senser element is set, and automatically opens water pipe by control circuit, realize automatic water supplement not difficult.Yet, because moisturizing temperature is lower, be easy to cause that vitreous thermal-collecting tube bursts (being commonly called as bombing).
Summary of the invention
The object of the invention is to: the shortcoming existing for above-mentioned prior art, proposes a kind of water compensating control method that can effectively avoid the automatic liquid supply pressure-bearing type solar water heater of bombing.
In order to reach above object, automatic liquid supply pressure-bearing type solar water heater of the present invention comprises water tank, thermal collecting header and heat exchange circulation line and control circuit, described water tank forms heat exchange loop by heat exchange circulation line and thermal collecting header, described thermal collecting header is connected with vacuum heat collection pipe and is communicated with the water pipe of break-make performer control, described water tank and thermal collecting header are respectively equipped with the first and second temperature sensors, described water tank precalculated position is provided with liquid level sensor, the signal output part of described the first and second temperature sensors and liquid level sensor is the corresponding input of connection control circuit respectively, the signal output part of described control circuit connects the controlled end of described break-make performer.
It further improves and comprises:
1) described water tank has heat transfer cabin, and the heat transfer cabin of described water tank forms heat exchange loop by heat exchange circulation line and thermal collecting header.
2) heat transfer cabin one side of described water tank is equipped with functional pot, and the middle part of described functional pot is communicated with the top of described heat transfer cabin by horizontal drain pipe, and the bottom of described functional pot is communicated with the middle part of described heat transfer cabin by liquid back pipe.
3) described liquid back pipe is provided with liquid level sensor.
4) described water pipe is in parallel with the cooling water inlet pipeline of water tank.
A moisturizing control procedure of described control circuit is: the water temperature of timing acquiring water tank, the liquid level parameter that gathers liquid level sensor and the temperature of thermal collecting header; The water temperature that judges respectively predetermined time interval water tank decline whether be greater than predetermined temperature drop threshold value, water tank precalculated position water level whether lower than the temperature of predetermined water level threshold value, thermal collecting header whether lower than preset temperature threshold value; When each judged result is while being, output control signal is opened break-make performer.
For example, described control circuit moisturizing control step is:
The water temperature of the first step, timing acquiring water tank;
Second step, judge that the water temperature of predetermined time interval water tank declines whether to be greater than predetermined temperature drop threshold value, carries out next step as being greater than, otherwise returns to the first step;
The liquid level parameter of the 3rd step, collection liquid level sensor;
The 4th step, judge water tank precalculated position water level whether lower than predetermined water level threshold value, carry out in this way next step, otherwise return to the first step;
The temperature of the 5th step, collection thermal collecting header;
The 6th step, judge thermal collecting header temperature whether lower than preset temperature threshold value, carry out in this way next step, otherwise return to the 5th step;
The 7th step, output control signal are opened break-make performer.
Operation principle of the present invention is: the medium in vacuum tube collector is by the media implementation Natural Circulation heat exchange in thermal siphon and thermal collecting header, same principle, and medium and the medium in water tank in thermal collecting header carry out heat exchange by convection current.Medium in vacuum tube collector occurs after volatilization, the liquid level sensor that is arranged in water tank precalculated position detects scarce liquid, the second temperature sensor, by temperature in perception thermal collecting header when preset temperature is following, is just controlled and is opened break-make performer simultaneously, gives heat-exchange system fluid infusion; Otherwise wouldn't carry out fluid infusion, and after waiting for that the interior temperature of thermal collecting header drops under preset temperature, just complete fluid infusion action, thereby effectively avoid bombing.
Be understood that, adopt after the present invention, heat-exchange system is bearing operation still; can pass through Based Intelligent Control, automatically in suitable, supplement heat transferring medium, thoroughly stop vacuum tube and burst because variations in temperature is excessive; assurance system is safe and reliable to operation, contributes to protect water tank simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the control logic flow chart of Fig. 1 embodiment.
The specific embodiment
Embodiment mono-
The automatic liquid supply pressure-bearing type solar water heater of the present embodiment as shown in Figure 1, comprises that one end has the thermal collecting header 9 that the water tank 8 of heat transfer cabin 6, bottom are communicated with a vacuum pumping pipe heat collector 1, and circulation line and control circuit.Circulation line contains heat exchange ascending tube 4 and heat exchange return duct 3, and the heat transfer cabin 6 of water tank 8 forms heat exchange loop by heat exchange ascending tube 4 and heat exchange return duct 3 with thermal collecting header 9.After vacuum tube collector 1 is sunlighted, medium is wherein by the media implementation Natural Circulation heat exchange in thermal siphon and thermal collecting header 9, the heat transfer cabin 6 medium heat convections of the medium in thermal collecting header 9 and water tank 8, thereby the water in heating water tank.
The water pipe that leads to water source that heat exchange return duct 3 and break-make performer---magnetic valve 2 is controlled is communicated with, thereby formed in fact thermal collecting header 9, is communicated with the water pipe of magnetic valve 2 controls, and this water pipe is in parallel with the cooling water inlet pipeline of water tank 8.Water tank 8 and thermal collecting header 9 are respectively equipped with the first temperature sensor and the second temperature sensor 10, heat transfer cabin 6 one sides of water tank 8 are equipped with functional pot 7, the middle part of this functional pot is communicated with the top of heat transfer cabin 6 by horizontal drain pipe, the bottom of functional pot 7 is communicated with the middle part of heat transfer cabin 6 by liquid back pipe, and liquid back pipe is provided with liquid level sensor 5 as precalculated position.The signal output part of above-mentioned first, second temperature sensor and liquid level sensor is the corresponding input of connection control circuit respectively, and the signal output part of control circuit connects the controlled end of magnetic valve 2, and a moisturizing of control circuit is controlled step and is:
The water temperature T s of the first step, timing acquiring water tank;
Second step, judge that whether the water temperature decline Δ T of predetermined time interval water tank half an hour is greater than 3 ℃ of predetermined temperature drop threshold values, carries out next step as being greater than, otherwise returns to the first step;
The liquid level parameter of the 3rd step, collection liquid level sensor;
The 4th step, judge water tank precalculated position water level whether lower than predetermined water level threshold value (being W=1), carry out in this way next step, otherwise return to the first step;
The temperature T n of the 5th step, collection thermal collecting header;
The 6th step, judge thermal collecting header temperature T n whether lower than 40 ℃ of preset temperature threshold values, carry out in this way next step, otherwise return to the 5th step;
The 7th step, output control signal are opened break-make performer.
As can be seen here, the present embodiment startup fluid infusion must meet following three conditions simultaneously:
1. find to lack liquid;
2. in water tank, in a period of time, there is temperature drop, user's water within this time period is described, therefore needing moisturizing---this judgement can avoid in user's water tank that frequent moisturizing does not cause during water enamel impaired and reduce the water tank life-span, and frequent moisturizing meeting causes incrustation scale more;
3. connection the temperature inside the box is less than or equal to uniform temperature, and as 40 ℃, thereby while preventing that temperature is higher, moisturizing causes bombing.
Experiment showed, and adopt after the present embodiment, in bearing operation situation, water-heater system can supplement heat transferring medium by automated intelligent, effectively avoids vacuum pipe from breakage, is conducive to protect water tank and vacuum tube, reliable.
Claims (2)
1. the water compensating control method of an automatic liquid supply pressure-bearing type solar water heater, this automatic liquid supply pressure-bearing type solar water heater comprises water tank, thermal collecting header and heat exchange circulation line and control circuit, described water tank forms heat exchange loop by heat exchange circulation line and thermal collecting header, described thermal collecting header is connected with vacuum heat collection pipe and is communicated with the water pipe of break-make performer control, described water tank and thermal collecting header are respectively equipped with the first and second temperature sensors, described water tank precalculated position is provided with liquid level sensor, the signal output part of described the first and second temperature sensors and liquid level sensor is the corresponding input of connection control circuit respectively, the signal output part of described control circuit connects the controlled end of described break-make performer, wherein, a moisturizing control procedure of described control circuit is: the water temperature of timing acquiring water tank, gather the liquid level parameter of liquid level sensor and the temperature of thermal collecting header, the water temperature that judges respectively predetermined time interval water tank decline whether be greater than predetermined temperature drop threshold value, water tank precalculated position water level whether lower than the temperature of predetermined water level threshold value, thermal collecting header whether lower than preset temperature threshold value, when each judged result is while being, output control signal is opened break-make performer.
2. the water compensating control method of automatic liquid supply pressure-bearing type solar water heater according to claim 1, a moisturizing of described control circuit is controlled step and is:
The water temperature of the first step, timing acquiring water tank;
Second step, judge that the water temperature of predetermined time interval water tank declines whether to be greater than predetermined temperature drop threshold value, carries out next step as being greater than, otherwise returns to the first step;
The liquid level parameter of the 3rd step, collection liquid level sensor;
The 4th step, judge water tank precalculated position water level whether lower than predetermined water level threshold value, carry out in this way next step, otherwise return to the first step;
The temperature of the 5th step, collection thermal collecting header;
The 6th step, judge thermal collecting header temperature whether lower than preset temperature threshold value, carry out in this way next step, otherwise return to the 5th step;
The 7th step, output control signal are opened break-make performer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222392.7A CN102734959B (en) | 2012-06-29 | 2012-06-29 | Automatic water-filling and pressure-bearing solar water heater and water-filling control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222392.7A CN102734959B (en) | 2012-06-29 | 2012-06-29 | Automatic water-filling and pressure-bearing solar water heater and water-filling control method thereof |
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| Publication Number | Publication Date |
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| CN102734959A CN102734959A (en) | 2012-10-17 |
| CN102734959B true CN102734959B (en) | 2014-04-02 |
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| CN201210222392.7A Expired - Fee Related CN102734959B (en) | 2012-06-29 | 2012-06-29 | Automatic water-filling and pressure-bearing solar water heater and water-filling control method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423903A (en) * | 2013-07-30 | 2013-12-04 | 王树 | Split wall-mounted solar water heater |
| CN104567046A (en) * | 2015-02-06 | 2015-04-29 | 昆明现代阳光太阳能有限公司 | Intelligent water supplementing method of solar water heater |
| CN106918154A (en) * | 2017-03-07 | 2017-07-04 | 李博宇 | A kind of solar water heater of automatic loading water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207866A (en) * | 1977-09-15 | 1980-06-17 | Boyd Rodney E | Solar heating system including freeze protection |
| CN101354194A (en) * | 2008-09-11 | 2009-01-28 | 艾欧史密斯(中国)热水器有限公司 | Pressure bearing type solar water heater |
| CN201242296Y (en) * | 2008-07-08 | 2009-05-20 | 盛林君 | Split pressure-bearing splitting solar water heater |
| CN201488272U (en) * | 2009-01-14 | 2010-05-26 | 田巧明 | Novel air source heat pump solar water heater |
| CN202648205U (en) * | 2012-06-29 | 2013-01-02 | 艾欧史密斯(中国)热水器有限公司 | Automatic fluid supplement pressure-bearing solar water heater |
-
2012
- 2012-06-29 CN CN201210222392.7A patent/CN102734959B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207866A (en) * | 1977-09-15 | 1980-06-17 | Boyd Rodney E | Solar heating system including freeze protection |
| CN201242296Y (en) * | 2008-07-08 | 2009-05-20 | 盛林君 | Split pressure-bearing splitting solar water heater |
| CN101354194A (en) * | 2008-09-11 | 2009-01-28 | 艾欧史密斯(中国)热水器有限公司 | Pressure bearing type solar water heater |
| CN201488272U (en) * | 2009-01-14 | 2010-05-26 | 田巧明 | Novel air source heat pump solar water heater |
| CN202648205U (en) * | 2012-06-29 | 2013-01-02 | 艾欧史密斯(中国)热水器有限公司 | Automatic fluid supplement pressure-bearing solar water heater |
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