CN1178894A - Automatic solar water heater with electric heating compensator - Google Patents
Automatic solar water heater with electric heating compensator Download PDFInfo
- Publication number
- CN1178894A CN1178894A CN 96116529 CN96116529A CN1178894A CN 1178894 A CN1178894 A CN 1178894A CN 96116529 CN96116529 CN 96116529 CN 96116529 A CN96116529 A CN 96116529A CN 1178894 A CN1178894 A CN 1178894A
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- China
- Prior art keywords
- water heater
- heater
- solar water
- heating
- electric heating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Control Of Resistance Heating (AREA)
Abstract
The said automatic solar water heater has film type electric heating element and automatic solar regulator for electric heating power, and it can utilize solar energy fully and has no problem of scale on the surface of electric heating element. The present invention may be used in solar heating engineering or heater with assistant electric heater to reduce power consumption and increase service life and heat efficiency of electric heating element.
Description
The present invention relates to a kind of solar water heater, particularly relate to a kind of solar water heater that adopts the auxiliary heating of electricity.
Solar water heater has safety, free of contamination advantage and obtain extensive use, but since the solar water heater utilization be the consecutive days photograph, be subjected to the influence of natural environment bigger, so solar water heater exists the problem that some need solve in practicality.
The solar radiation power that receives owing to ground causes solar water heater can't receive enough solar energy with rainy weather in the winter time required hot water is provided along with the variation of season, weather, time changes.Known to the inventor, in order to address this problem, part solar water heater manufacturer adopts the mode of heating of electric heater at present, in solar water heater water tank, increase heating, when solar energy can not provide enough energy, compensate the deficiency of order photograph, the water in the water-heater water tank is heated with electric energy.The weak point of this mode is that heating directly places water tank, contacts heating with water, and the impurity in the water makes the heating surface scale, has reduced the service life of the thermal efficiency and heating.The heating power of heating can not make full use of solar energy to reach purpose of energy saving when grow or can not turn down automatically or heighten when dying down at sunshine on the other hand.
The objective of the invention is: propose a kind of electrical heating scheme of automatic compensation, electrical heating power can be regulated along with changing sunshine automatically, solve the surface scale problem that directly places the element that water causes owing to heating simultaneously.
Technical scheme of the present invention is as follows: utilize existing composite technology, implantable conductive exothermic material in two-layer soft heat-resistant insulation material (metal, carbon fiber, conductivity ceramics etc. all can) and binding agent, repressed formation has " sandwich " formula structure rectangle thin-film electro heater, should guarantee as far as possible that when press membrane internal-internal does not stay the coating of bubble, binding agent evenly, shelf depreciation in the time of can preventing like this that film from curving circular-arc use.The structural representation of film-type heating element heater as shown in Figure 1.This thin-film body is curved circular-arc placing between solar water heater water tank heat-insulation layer and the interior bucket, the heat that the outer surface that is wrapped in bucket tightly sends heating film conducts the water of giving in the interior bucket more equably along whole staving, the water that receives solar energy heating is carried out the electrical heating compensation again, the watt level of electronic compensating is adjusted automatically by extraneous sun light intensity, self-adjusting principle is such: in the ordinary course of things, the solar radiation intensity that ground receives is directly proportional with the sunshine power that this point receives, measure outside sunlight intensity by light-sensitive element, be translated into corresponding thyristor operating angle control signal, thereby the size of control electrical heating power, extraneous sunshine is strong more, the silicon controlled angle of flow is more little, electrical heating power is more little, when sunshine weakened, it is big that the silicon controlled angle of flow becomes, and electrical heating power strengthens, when the heating surface temperature surpassed set point, electrical heating was cut off automatically.Realized the heat protection of electrical heating elements, the empty phenomenon of burning of anti-system.The control principle figure of system as shown in Figure 2.In Fig. 2, P1, R1, U1 form the intensity of solar radiation detection circuit, intensity of solar radiation is changed into the correspondent voltage signal, with U1:C, U1:D is that the circuit of core is used to produce the triangular signal synchronous with AC power, in same power cycle, when solar radiation is strong more, it is short more that the time of high level appears in 4 pin of U2, the time decreased of 3 pin output high-frequency impulse, the silicon controlled ON time is short more like this, and correspondingly electrically heated power is more little.Realized the automatic adjusting of heating power.Controllable silicon next door RC circuit, piezo-resistance in parallel is used to absorb higher hamonic wave and surge current.
The present invention compares with existing solar water heater:
1. realized the automatic adjusting of auxiliary electrical heating power, when solar radiation was strong, electrical heating power reduced automatically, and during radiation falloff, electrical heating power raises automatically, has reached purpose of energy saving.
2. evenly heating of film calandria surface, surface temperature is even, and power density is low, and heater unit are thermic load reduces, aging slowing down.
3. electrical heating elements does not contact with water, the element surface non flouling behaviour.
The present invention is achieved in that and plants the good conductive exothermal material of structure (for example adopting carbon film, metal film) as shown in Figure 1 on a high temperature insulation cloth (for example being coated with the nylon cloth of high-temperature-resistant epoxy resin glue), the edge of empire cloth being guided at the two poles of the earth of exothermic material with the Copper Foil band welds with high temperature resistant wire again, make binding post, connect for external circuit and use.Again after the even adhesive stripe-coating in surface, another empire cloth in the covering, repressed formation has " sandwich " formula structure rectangle thin-film electro heater, should guarantee as far as possible that when press membrane inside do not stay bubble.Ready-made heater element is bent to the circular-arc interior bucket outer surface that is wrapped in solar water heater tightly, the temperature relay of a planar structure is installed at element surface, the normally-closed contact of relay with insert current supply circuit as shown in Figure 2 after the binding post of heater element is connected and get final product work, the temperature operating point of temperature relay is arranged on 90 ℃～100 ℃ and is advisable.In order to guarantee user security, the shell of water heater and hot-water line should be installed reliable earth connection.Circuit shown in the accompanying drawing 2 and parameter are made an independently printed substrate, in the instrument that is contained in a sealing is closed, instrument is close to the solar water heater side installs.Close in instrument and should open a window, allow the sensitive surface of light-sensitive element can receive the Strength Changes of sunshine, window should adopt the transparent material sealing, and anti-system water, dust enter in the instrument.The input of the power synchronization signal of control circuit can obtain from civil power with an isolating transformer, or adds a winding obtain on power transformer.
Claims (4)
1. electric automatically assisting heated compensation solar water heater; it is characterized in that: the electronic compensating heating element heater is the flexible film; film surface is flexible insulating materials; heater is positioned in the middle of the two layers of insulation material; heating element heater electrical power controlled by extraneous intensity of solar radiation, and have thermel protection device.
2. auxiliary heating control apparatus of electric auxiliary heating type solar water heater electricity is characterized in that control device can regulate the supply voltage virtual value of electrical heating elements according to the Strength Changes at sunshine, thus control heating power size.
3. implement method as right 1 desired automatic electronic compensating formula solar water heater.
4. implement method as the auxiliary heating control apparatus of right 2 desired electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96116529 CN1178894A (en) | 1996-10-09 | 1996-10-09 | Automatic solar water heater with electric heating compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96116529 CN1178894A (en) | 1996-10-09 | 1996-10-09 | Automatic solar water heater with electric heating compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1178894A true CN1178894A (en) | 1998-04-15 |
Family
ID=5123628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96116529 Pending CN1178894A (en) | 1996-10-09 | 1996-10-09 | Automatic solar water heater with electric heating compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1178894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963310A (en) * | 2010-07-29 | 2011-02-02 | 深圳市华星光电技术有限公司 | Back light module and heating apparatus thereof |
-
1996
- 1996-10-09 CN CN 96116529 patent/CN1178894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963310A (en) * | 2010-07-29 | 2011-02-02 | 深圳市华星光电技术有限公司 | Back light module and heating apparatus thereof |
| US8529079B2 (en) | 2010-07-29 | 2013-09-10 | Shenzhen China Star Optoelectronics Technology Co. Ltd | Backlight module and heating device thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |