CN103968578A - Control method for solar energy and electric energy combined heating in water heater - Google Patents
Control method for solar energy and electric energy combined heating in water heater Download PDFInfo
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- CN103968578A CN103968578A CN201310120211.4A CN201310120211A CN103968578A CN 103968578 A CN103968578 A CN 103968578A CN 201310120211 A CN201310120211 A CN 201310120211A CN 103968578 A CN103968578 A CN 103968578A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 321
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- 238000005086 pumping Methods 0.000 description 4
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- 238000005485 electric heating Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The invention relates to a control method for solar energy and electric energy combined heating in a water heater, wherein the water heater comprises a solar heating system, an electric energy auxiliary heating system and a control system, the electric energy auxiliary heating system is used for multi-stage heating, and when the requirement cannot be met only by the solar heating system, according to the temperature difference between the set temperature of water used by a user and the temperature of outlet water of a water tank water outlet in the solar heating system, the electric energy auxiliary heating system is controlled to adopt the heating stage number corresponding to the temperature difference for auxiliary heating, so that the temperature of the outlet water of the water heater is always within the set temperature deviation range of the water used by the user, and the temperature of the water used by the user is stable; only the water is heated to the set temperature of the water for the user, so that the electric energy is saved; only water to be used by a user is heated, so that the heat medium inlet of the solar heating system is always at the lowest temperature, the solar heat collection efficiency is effectively improved, and the heat loss of the water tank is reduced.
Description
Technical field
The present invention relates to field of water heaters, the control method of solar energy and electric energy combined heated in especially a kind of water heater.
Background technology
Solar energy is a kind of generally acknowledged clean energy resource, is widely used now.Solar water heater is accepted by increasing family.But owing to being subject to the impact in weather and season, its result of use is unsatisfactory.In order to ensure normal use, the solar water heater of selling in the market, is all equipped with electrical auxiliary heater, is used for compensating the deficiency of solar energy.
At present, the solar water heater of electrified heating function is widely used.The object that solar water heater arranges electric heating function is the problem that does not have sunlight or sunlight solar water heater not enough and that cause to be difficult to produce enough hot water and to affect use in order to solve.As everyone knows, solar water heater is in order to utilize as much as possible solar energy, and the volume of its storage tank is larger, is generally the several times of common Water tank for electric water-heater volume.
And the solar water heater of existing electrified heating function, the heat exchange space of its electrical heating space and solar energy heat collection pipe coincides together completely, in there is no sunlight or sunlight deficiency, whole storage tank hundreds of premium on currency is all heated to by electrical heating the temperature that is suitable for having a bath together, not only heat required time very long, and actual use only need sub-fraction hot water sometimes, waste of energy is very serious.Save the original idea of the energy against solar water heater
As disclosed in Chinese patent 02232915, when the thermal-collecting tube of solar water heater is during to water storage underheat, the water temperature that solar water heater will utilize electric heater that the water storage temperature increase in water tank is required to user.This electricity of solar water heater is added hot disadvantage: when the thermal-collecting tube of solar water heater is to storing water in water tank underheat, when user uses higher than the hot water of storing water in water tank temperature again, no matter user uses the hot water that how much needs temperature, and solar water heater all must all be electrically heated to the water storage in water tank the water temperature that user uses.Even if user only uses a small amount of hot water, also need, by whole the water storage in water tank electrical heating, to cause unnecessary waste of energy.User also will wait for the longer electrical heating time simultaneously.
Solar water heater water supply water temperature deficiency has two kinds of situations: a kind of situation is due to weather reason, and water heater cannot rely on solar thermal collector to provide more heat energy water storage in water tank to be heated to the water temperature of requirement the same day really; Another kind of situation is that solar thermal collector has the ability to provide more heat energy water storage in water tank to be heated to the water temperature of requirement, but storing water in water tank temperature is while not yet reaching user's instructions for use, and user just needs the hot water of instructions for use water temperature.Both of these case, reality does not need electricity benefit that water storage in water tank is all heated.For the first situation, user uses how much hot water, and electrical heating provides how much hot water just passable.For the second situation, be also that user uses how much hot water, electrical heating provides how much hot water just passable, and the water not used in water tank continues heating by solar thermal collector.Obviously before solar thermal collector all heats water storage in water tank, the mode that there is no need certain electricity consumption benefit replaces solar thermal collector that the water storage in water tank is all heated in advance.
Solar water heating system, when with other supplementary energy combinations, is generally guarantee leaving water temperature now, adopts and shifts to an earlier date water mode in heating water tank, more than Water in Water Tanks temperature will remain on certain serviceability temperature like this, causes the inflow temperature of solar energy system high, and efficiency is low.Water tank is all the time on uniform temperature simultaneously, and the heat waste of system is higher.
The Chinese patent of application number 200810170498.0 discloses a kind of instant heating solar water heater, save the power consumption of solar water heater with best mode of heating, make solar water heater electricity mend electricity consumption and drop to bottom line, solar water heater more levels off to abundant dependence solar energy water storage in water tank is heated, solar water heater had both met the random requirement with hot water, did not cause again unnecessary waste of energy.Its composition of the present invention comprises outside water tank and heat collector, electrically heated heating device is also housed.What electrically heated heating device can be contained in the water side in water tank or be serially connected in water tank outside is exported to any one of pipeline between water terminal.The present invention will greatly reduce all types, as electric cost and time cost split type, closed, that close type solar water heater user uses hot water.Electric heating device is set in solar water heater system, makes its triple functions that has solar water heater, storage-type electric water heater, instant electric water heater concurrently, but foregoing invention does not relate to how heating of heating device.
Given this present invention is proposed.
Summary of the invention
Object of the present invention is for overcoming the deficiencies in the prior art, the control method of solar energy and electric energy combined heated in a kind of water heater is provided, can be according to the temperature difference of the water outlet of water tank place of solar heating system and user's water, the water heating that the corresponding heating element heater of startup electric energy auxiliary heating system will use user approaches the temperature of this temperature difference, accurately calculate the quantity of required heating tube, save electric energy, electric energy auxiliary heating system is the water of the water tank inside of heating solar heating system not, the water that only will use user heats, ensure that user is with under the prerequisite of coolant-temperature gage, ensure that the import of solar heating system heating agent is minimum temperature all the time, effectively improve the collecting efficiency of solar energy and reduce water tank heat waste.
In order to realize this object, the present invention adopts following technical scheme:
The control method of solar energy and electric energy combined heated in a kind of water heater, described water heater comprises solar heating system, electric energy auxiliary heating system and control system, electric energy auxiliary heating system is Multi-stage heating, in the time only can not satisfying the demands with solar heating system, according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, control electric energy auxiliary heating system and adopt heating progression that should temperature difference is carried out to auxiliary heating, so that the temperature stabilization of water outlet of water heater.
The method comprises the steps:
1) at the water outlet of water tank of solar heating system, the temperature of water is detected;
2) judged by control system;
3), in the time that temperature can not reach the design temperature of user's water, control system starts the electric energy auxiliary heating system at the water outlet of water tank place of solar heating system;
4) described electric energy auxiliary heating system is Multi-stage heating, and control system is determined the progression of heating according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system.
Described electric energy auxiliary heating system comprises multiple heater blocks, and this heater block is the heating tube of multiple equal-wattages and/or different capacity, opens heater block single and/or combination the water passing through is heated by control system control.
The leaving water temperature of water outlet of water tank is detected at the water outlet of water tank place of described solar heating system by temperature sensor, and imports leaving water temperature into control system.
Described in the design temperature of stored user water in control system, the leaving water temperature of the water outlet of water tank of the solar heating system that temperature sensor records imports control system into, and and the design temperature of user's water compare.
If the difference of the design temperature of leaving water temperature and user's water is more than or equal to setting value, maintain electric energy auxiliary heating system closed condition, otherwise, open electric energy auxiliary heating system, open corresponding heating tube or the combination of corresponding heating tube is heated according to temperature difference.
Described control system is opened corresponding heating tube or the combination of corresponding heating tube while heating according to temperature difference, and the temperature that a group or a heating tube of selection raises the water by this heating tube is more than or equal to and approaches most the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system.
When described heater block is the heating tube of multiple equal-wattages, each heating tube can will pass through the water rising N degree of this heating tube, the temperature difference that described control system calculates the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system is M degree, in the time that M/N is integer, select M/N heating tube to heat water, in the time that M/N is not integer, M/N is rounded and obtains H, select H+1 heating tube to carry out auxiliary heating to water.
Described multiple heating tubes are arranged in turn, and N degree in turn can raise the water by this heating tube.
When described heater block is the heating tube of multiple different capacities, the corresponding heating progression of each heating tube, described control system calculates the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, and selects heating tube that should temperature difference to carry out auxiliary heating to water.
Adopt after technical solutions according to the invention, bring following beneficial effect:
1, according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, control the heating progression adopting should temperature difference and carry out auxiliary heating, so that the temperature of water outlet of water heater is all the time in the design temperature deviation range of user's water, and then make the temperature stabilization of user institute water.
2, by measuring temperature difference, the corresponding heating element heater that starts electric energy auxiliary heating system approaches the heating of user's water the temperature range of this temperature difference, when ensureing with coolant-temperature gage, save electric energy, while having avoided the temperature of Water in Water Tanks of solar heating system higher, open the excess Temperature of the water flowing out after electric energy auxiliary heating system, when user uses, also need to convert cold water, cause the problem of waste of energy.
3, electric energy auxiliary heating system is arranged on water outlet of water tank, the water of convection current water tank carries out auxiliary heating, the water of water tank inside is heated by solar heating system, ensures that the import of solar heating system heating agent is minimum temperature all the time, effectively improves the collecting efficiency of solar energy and reduces water tank heat waste.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Brief description of the drawings
Fig. 1: the structure chart of water heater in the control method of solar energy and electric energy combined heated in water heater of the present invention
Fig. 2: the structure chart of electric energy auxiliary heating system of the present invention
Fig. 3: the control method flow chart of solar energy and electric energy combined heated in water heater of the present invention
Wherein: 1, the first heating tube, 2, the second heating tube, 3, the 3rd heating tube, 4. the 4th heating tube, 5, pumping plant, 6, expansion drum, 7, prefill valve, 8, cold water pipe, 9, hot-water line, 10, water tank, 11, water outlet of water tank
Detailed description of the invention
The control method of solar energy and electric energy combined heated in water heater of the present invention, described water heater comprises solar heating system, electric energy auxiliary heating system and control system, electric energy auxiliary heating system is Multi-stage heating, in the time only can not satisfying the demands with solar heating system, according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, controlling electric energy auxiliary heating system adopts heating progression that should temperature difference is carried out to auxiliary heating, so that the temperature of water outlet of water heater is all the time in the design temperature deviation range of user's water, the temperature stabilization of user institute water.
And while adopting electric energy auxiliary heating system to carry out auxiliary heating to water, be not the water in heating water tank, but the part water that will use water outlet of water tank heating user, the temperature stabilization of user's water used, in design temperature deviation range.
Above-mentioned in the time only can not satisfying the demands with solar heating system, can not satisfy the demands and be less than a setting value for the difference of the leaving water temperature of water outlet of water tank in solar heating system and the design temperature of user's water, for example, if this setting value is 0, the design temperature that leaving water temperature of water outlet of water tank is less than user's water is and does not satisfy the demands, if this setting value is-5, the leaving water temperature of water outlet of water tank does not meet the demands lower than above being of design temperature 5 degree of user's water.
The method comprises the steps:
1) at the water outlet of water tank of solar heating system, the temperature of water is detected;
2) judged by control system;
3), in the time that temperature can not reach the design temperature of user's water, control system starts the electric energy auxiliary heating system at the water outlet of water tank place of solar heating system;
4) described electric energy auxiliary heating system is Multi-stage heating, and control system is determined the progression of heating according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system.
Described electric energy auxiliary heating system comprises multiple heater blocks, and this heater block is the heating tube of multiple equal-wattages and/or different capacity, opens heater block single and/or combination the water passing through is heated by control system control.
The leaving water temperature of water outlet of water tank is detected at the water outlet of water tank place of described solar heating system by temperature sensor, and import leaving water temperature into control system, the design temperature of stored user water in described control system, the leaving water temperature of the water outlet of water tank of the solar heating system that temperature sensor records imports control system into, and compares with the design temperature of user's water.
If the difference of the design temperature of leaving water temperature and user's water is more than or equal to setting value, maintain electric energy auxiliary heating system closed condition, otherwise, open electric energy auxiliary heating system, open corresponding heating tube or the combination of corresponding heating tube is heated according to temperature difference.
Described control system is opened corresponding heating tube or the combination of corresponding heating tube while heating according to temperature difference, and the temperature that a group or a heating tube of selection raises the water by this heating tube is more than or equal to and approaches most the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system.
When described heater block is the heating tube of multiple equal-wattages, each heating tube can will pass through the water rising N degree of this heating tube, the temperature difference that described control system calculates the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system is M degree, in the time that M/N is integer, select M/N heating tube to heat water, in the time that M/N is not integer, M/N is rounded and obtains H, select H+1 heating tube to carry out auxiliary heating to water, described multiple heating tubes are arranged in turn, and N degree in turn can raise the water by this heating tube.
Or multiple heating tubes are positioned at same position, the water by this heating tube once can be elevated to the design temperature of user's water.
When described heater block is the heating tube of multiple different capacities, the corresponding heating progression of each heating tube, described control system calculates the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, and selects heating tube that should temperature difference to carry out auxiliary heating to water.
Embodiment mono-:
As Fig. 1, shown in Fig. 2, the water heater relating in the present invention comprises solar heating system, electric energy auxiliary heating system and control system, solar heating system comprises the heat collector 12 that can absorb solar energy, for the water tank 10 of water storage and heat exchange, the interior heat exchanger that arranges of water tank 10, for the pumping plant 5 of the heating agent in solar heating system or water extraction confession mobilization dynamic, connect the pipeline of all parts, prefill valve 7 and expansion drum 6 are set on pipeline, heating agent in heat collector 12 by solar energy heating, by the effect of pumping plant 5, heating agent high temperature in heat collector being pumped to heat exchanger heats the water in water tank, the low heating agent of temperature simultaneously carrying out after heat exchange in heat exchanger is pumped in heat collector 12 and is absorbed heat by the effect of pumping plant 5, so form circulation, in the time that solar energy is sufficient, only utilize solar energy just the water in water tank can be heated to the design temperature of user's water.
Water heater also comprises electric energy auxiliary heating system, in the time that solar energy is inadequate, only utilize solar heating system, the temperature of the water in water tank 10 can not reach the design temperature of user's water, and the temperature that now starts electric energy auxiliary heating system auxiliary heating guarantee user water can meet the demands.
Described electric energy auxiliary heating system is arranged on the delivery port of water tank, comprise multiple heating tubes, the number of heating tube is determined according to actual conditions, the preferably heating tube of four equal-wattages, be respectively the first heating tube 1, the second heating tube 2, the 3rd heating tube 3 and the 4th heating tube 4, the power of each heating tube is determined according to the flow situation of delivery port, the first heating tube 1, the second heating tube 2, the 3rd heating tube 3 and the 4th heating tube 4, be arranged in turn the water outlet of water tank, the power of each heating tube guarantees temperature rising 10 degree of the water by this heating tube, if the temperature of user's water is 40 degree, when the temperature of water outlet of water tank is 0-10 degree, the temperature difference of the design temperature of user's water and the leaving water temperature of water outlet of water tank is 30-40 degree, now open four heating tubes opens heating through the water of this heating tube simultaneously, each heating tube ensures temperature rising 10 degree by the water of this heating tube, water by heating tube is spent by temperature rising 40 after four heating tubes, ensure that the temperature of the water flowing out is more than 40 degree,
When the temperature of water outlet of water tank is 10-20 degree, the temperature difference of the design temperature of user's water and the leaving water temperature of water outlet of water tank is 20-30 degree, now open three heating tubes opens heating through the water of this heating tube simultaneously, each heating tube ensures temperature rising 10 degree by the water of this heating tube, water by heating tube is spent by temperature rising 30 after three heating tubes, ensures that the temperature of the water flowing out is more than 40 degree;
When the temperature of water outlet of water tank is 20-30 degree, the temperature difference of the design temperature of user's water and the leaving water temperature of water outlet of water tank is 10-20 degree, now open two heating tubes opens heating through the water of this heating tube simultaneously, each heating tube ensures temperature rising 10 degree by the water of this heating tube, water by heating tube is spent by temperature rising 20 after two heating tubes, ensures that the temperature of the water flowing out is more than 40 degree;
When the temperature of water outlet of water tank is 30-40 degree, the temperature difference of the design temperature of user's water and the leaving water temperature of water outlet of water tank is 0-10 degree, now open a heating tube opens heating through the water of this heating tube simultaneously, each heating tube ensures temperature rising 10 degree by the water of this heating tube, water by heating tube is spent by temperature rising 20 after a heating tube, ensures that the temperature of the water flowing out is more than 40 degree;
When the temperature of water outlet of water tank is more than 40 degree, now electric energy auxiliary heating system keeps closed condition.
Multiple heating tubes also can be selected the heating tube of different capacity, as water outlet of water tank arranges six heating tubes in turn, 20 degree that the temperature of the water by this heating tube can be raise respectively of each heating tube, 10 degree, 5 degree, 3 degree, 2 degree, 1 degree, the number of degrees of any one integer of one-tenth 1-40 degree capable of being combined, can select corresponding one or combination accordingly according to the temperature difference of the leaving water temperature of the design temperature of user's water and water outlet of water tank.
Or what in multiple heating tubes, have equal-wattage also has a different capacity, as water outlet of water tank arranges six heating tubes in turn, 10 degree that the temperature of the water by this heating tube can be raise respectively of each heating tube, 10 degree, 5 degree, 5 degree, 3 degree, 3 degree, any several heating tube can combined heated, can select corresponding one or combination accordingly according to the temperature difference of the leaving water temperature of the design temperature of user's water and water outlet of water tank.
Or the heating tube that heating tube is multiple different capacities, the corresponding heating progression of each heating tube, described control system calculates the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, and selects heating tube that should temperature difference to carry out auxiliary heating to water.As the heating tube of different capacity can raise the temperature of the water by this heating tube respectively, 10 degree, 15 are spent, 20 degree, 25 are spent, 30 degree, 35 are spent, and can select corresponding heating tube to carry out auxiliary heating according to the temperature difference of the leaving water temperature of the design temperature of user's water and water outlet of water tank.
Control system of the present invention comprises temperature sensor and controller, temperature sensor is arranged on the water outlet of water tank place of solar heating system, detect the temperature at water outlet of water tank place, and this temperature is imported in controller, in controller, store the design temperature of user's water, the leaving water temperature of controller to the water outlet of water tank importing into and the design temperature of user's water compare, if the difference of the design temperature of leaving water temperature and user's water is more than or equal to setting value, maintain electric energy auxiliary heating system closed condition, otherwise, open electric energy auxiliary heating system, open corresponding heating tube or the combination of corresponding heating tube is heated according to temperature difference.
Embodiment bis-:
As shown in Figure 3, the control method of solar energy and electric energy combined heated in a kind of water heater of the present invention, concrete steps are as follows:
A) original state, solar heating system heats water, and electric energy auxiliary heating system is in closed condition;
B) be provided with temperature sensor at the water outlet of water tank of solar heating system, detect the leaving water temperature of water outlet of water tank, and import detected temperatures T1 into control system;
C) judged by control system: the design temperature T2 of storage user water in control system, and the design temperature T2 of the leaving water temperature T1 of the water outlet of water tank of the solar heating system that temperature sensor is imported into and user's water of storage compares;
If d) difference of the design temperature of leaving water temperature and user's water is more than or equal to setting value, maintain electric energy auxiliary heating system closed condition, otherwise, open electric energy auxiliary heating system, open corresponding heating tube or the combination of corresponding heating tube is heated according to temperature difference.
E) described electric energy auxiliary heating system comprises multiple heating tubes of arranging in turn, control system is calculated the design temperature T2 of user's water of storage and the temperature difference T2-T1 of the leaving water temperature T1 of water outlet of water tank, and determines according to temperature difference T2-T1 the number that heating tube is opened;
If f) power of each heating tube is identical, each heating tube is by the temperature of the water by this heating tube N degree that all raises, judge whether (T2-T1)/N is integer, when (T2-T1)/N is integer, opening (T2-T1)/N heating tube heats the water flowing out, when (T2-T1)/N is not integer, (T2-T1)/N is rounded to H, open H+1 heating tube the water flowing out is heated;
If g) the power difference of heating tube, each heating tube is by the temperature of the water by this heating tube raise respectively N1, N2 ... Nn degree, selects to open one or several heating tube, and the combination of this one or several heating tube temperature rise is the most approaching and be greater than (T2-T1).
Along with the increase of user's water time, the increase of water consumption, the temperature of the water in water tank may decline, and now control system can increase corresponding heating progression or use instead according to the temperature difference of the leaving water temperature of the design temperature of user's water and water outlet of water tank and now heats accordingly progression and carry out auxiliary heating; Or the rising of the temperature of the water heating along with solar heating system, now control system can reduce corresponding heating progression or use instead according to the temperature difference of the leaving water temperature of the design temperature of user's water and water outlet of water tank and now heats accordingly progression and carry out auxiliary heating; When the difference of the design temperature that leaving water temperature and user's water detected is more than or equal to setting value, close electric energy auxiliary heating system.
Use the control method of solar energy and electric energy combined heated in water heater of the present invention, according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, control the heating progression adopting should temperature difference and carry out auxiliary heating, so that the temperature of water outlet of water heater is all the time in the design temperature deviation range of user's water, the temperature stabilization of user institute water; By measuring temperature difference, the water that the corresponding heating element heater of startup electric energy auxiliary heating system will use user only heats the temperature that approaches this temperature difference, when ensureing with coolant-temperature gage, save electric energy, while having avoided the temperature of Water in Water Tanks of solar heating system higher, open the excess Temperature of the water flowing out after electric energy auxiliary heating system, when user uses, also need to convert cold water, cause the problem of the waste of electric energy; Electric energy auxiliary heating system is arranged on water outlet of water tank, the water of convection current water tank carries out auxiliary heating, the water of water tank inside is heated by solar heating system, ensures that the import of solar heating system heating agent is minimum temperature all the time, effectively improves the collecting efficiency of solar energy and reduces water tank heat waste.
The foregoing is only the preferred embodiment of the present invention, it should be pointed out that for the ordinary skill in the art, without departing from the principles of the present invention, can also make various deformation and improvement, this also should be considered as protection scope of the present invention.
Claims (10)
1. the control method of solar energy and electric energy combined heated in a water heater, described water heater comprises solar heating system, electric energy auxiliary heating system and control system, electric energy auxiliary heating system is Multi-stage heating, it is characterized in that: in the time only can not satisfying the demands with solar heating system, according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, control electric energy auxiliary heating system and adopt heating progression that should temperature difference is carried out to auxiliary heating, so that the temperature stabilization of water outlet of water heater.
2. the control method of solar energy and electric energy combined heated in water heater according to claim 1, is characterized in that: the method comprises the steps:
1) at the water outlet of water tank of solar heating system, the temperature of water is detected;
2) judged by control system;
3), in the time that temperature can not reach the design temperature of user's water, control system starts the electric energy auxiliary heating system at the water outlet of water tank place of solar heating system;
4) described electric energy auxiliary heating system is Multi-stage heating, and control system is determined the progression of heating according to the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system.
3. the control method of solar energy and electric energy combined heated in water heater according to claim 1 and 2, it is characterized in that: described electric energy auxiliary heating system comprises multiple heater blocks, this heater block is the heating tube of multiple equal-wattages and/or different capacity, opens heater block single and/or combination the water passing through is heated by control system control.
4. the control method of solar energy and electric energy combined heated in water heater according to claim 1 and 2, it is characterized in that: the leaving water temperature of water outlet of water tank is detected at the water outlet of water tank place of described solar heating system by temperature sensor, and imports leaving water temperature into control system.
5. the control method of solar energy and electric energy combined heated in water heater according to claim 4, it is characterized in that: the design temperature of stored user water in described control system, the leaving water temperature of the water outlet of water tank of the solar heating system that temperature sensor records imports control system into, and compares with the design temperature of user's water.
6. the control method of solar energy and electric energy combined heated in water heater according to claim 5, it is characterized in that: if the difference of the design temperature of leaving water temperature and user's water is more than or equal to setting value, maintain electric energy auxiliary heating system closed condition, otherwise, open electric energy auxiliary heating system, open corresponding heating tube or the combination of corresponding heating tube is heated according to temperature difference.
7. the control method of solar energy and electric energy combined heated in water heater according to claim 6, it is characterized in that: described control system is opened corresponding heating tube or the combination of corresponding heating tube while heating according to temperature difference, the temperature that a group or a heating tube of selection raises the water by this heating tube is more than or equal to and approaches most the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system.
8. the control method of solar energy and electric energy combined heated in water heater according to claim 7, it is characterized in that: when heating tube that described heater block is multiple equal-wattages, each heating tube can will pass through the water rising N degree of this heating tube, the temperature difference that described control system calculates the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system is M degree, in the time that M/N is integer, select M/N heating tube to heat water, in the time that M/N is not integer, M/N is rounded and obtains H, select H+1 heating tube to carry out auxiliary heating to water.
9. the control method of solar energy and electric energy combined heated in water heater according to claim 8, is characterized in that: described multiple heating tubes are arranged in turn, and N degree in turn can raise the water by this heating tube.
10. the control method of solar energy and electric energy combined heated in water heater according to claim 7, it is characterized in that: when heating tube that described heater block is multiple different capacities, the corresponding heating progression of each heating tube, described control system calculates the temperature difference of the leaving water temperature of water outlet of water tank in the design temperature of user's water and solar heating system, and selects heating tube that should temperature difference to carry out auxiliary heating to water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120211.4A CN103968578A (en) | 2013-01-29 | 2013-04-08 | Control method for solar energy and electric energy combined heating in water heater |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310120211.4A CN103968578A (en) | 2013-01-29 | 2013-04-08 | Control method for solar energy and electric energy combined heating in water heater |
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| CN104482657A (en) * | 2014-12-01 | 2015-04-01 | 芜湖美的厨卫电器制造有限公司 | Hot-water system and control method thereof |
| CN106196565A (en) * | 2016-08-30 | 2016-12-07 | 江苏苏美达机电有限公司 | A kind of thermostatic instant heating formula water heater and control method thereof |
| CN106325333A (en) * | 2016-09-30 | 2017-01-11 | 北京婴萌科技有限公司 | Instantaneous heating system |
| CN107036299A (en) * | 2017-03-15 | 2017-08-11 | 青岛海尔智能技术研发有限公司 | Electric heating accurate control method for solar water heater |
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| CN107036299B (en) * | 2017-03-15 | 2020-12-11 | 青岛海尔智能技术研发有限公司 | Electric heating accurate control method for solar water heater |
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Application publication date: 20140806 |