CN100535575C - Paraffin accumulating type electric water heater - Google Patents
Paraffin accumulating type electric water heater Download PDFInfo
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- CN100535575C CN100535575C CNB2006100057698A CN200610005769A CN100535575C CN 100535575 C CN100535575 C CN 100535575C CN B2006100057698 A CNB2006100057698 A CN B2006100057698A CN 200610005769 A CN200610005769 A CN 200610005769A CN 100535575 C CN100535575 C CN 100535575C
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Abstract
The invention provides a paraffin regenerative electric heater, comprising insulation shell; barrel set in the insulation shell, in which water is set; heat exchanging plate pipe winded in the barrel and with water inlet and outlet ports; at least one electric heater set in the barrel. It is characterized in that the electric heater also comprises paraffin set in the barrel as regenerative medium; water pump for cycling water in barrel; of which the water inlet port is connected with the lower of barrel; water pipe, of which one end is connected with the outlet port of water pump and the other end is set above the paraffin. The invention is provided with quick heating, long and stable water supply time, good using safety, good standby heating storage performance, compact structure and low cost so on.
Description
Technical field
The present invention relates to a kind of electric heater, relate in particular to a kind of paraffin accumulating type electric water heater.
Background technology
At present, be used to provide the water heater of hot water to be divided three classes usually on the market: electric heater, gas heater and solar water heater.
Electric heater can provide the hot water of equilibrium temperature, and its shortcoming only can be kept the hot water supply of short time, and needs long preheating.Though adopt the water receptacle of big volume to address this problem, its outward appearance seems huge, and can cause the low boiling of water and high steam pressure.Thus, the steam pressure of accumulating when safety valve adds hot water to be released in must be installed.Thus, cause the heat loss and the efficiency of heating surface to reduce.And in case safety valve breaks down, water heater just exists the possibility of blast.
The advantage of gas heater be can be for a long time hot water supply, and need not preheating, but its shortcoming is that water temperature is owing to the influence that is subjected to displacement, flow velocity and switching frequency becomes very unstable.
Solar water heater can utilize the heat of solar radiation fully, but energy savings.It is bulky that but its shortcoming is, and do not having can't to supply with gratifying hot water under the variation of illumination and atrocious weather.
People demand developing the New-type water heater of the comprehensive above-mentioned water heater advantage of a kind of energy urgently, promptly preheating time weak point, heat supply water time length, temperature stabilization, safety, water heater that volume is little.Recently, Zhang Yong discloses a kind of accumulation of heat electric heater in the Chinese patent publication number CN1554900 on December 22nd, 2003 application, in this accumulation of heat electric heater, adopted the silico-aluminum phase-change material as heat-storing material.
The idea that phase-change material is applied in the water heater is of long duration.Subject matter is how to determine that suitable phase-change material is as heat-storing material.At present, many researchers seek suitable phase-change material and are used for water heater, for example eutectic thing, palmitic acid (palmitic acid), carboxylic acid (carboxylic acid) or the alkyl hydrocarbon (alkly hydrocarbon) etc. that constitute with stearic acid (stearic acid), moisture salt (salt hydrate), by ammonium vanadium (ammoniumalum) and ammonium nitrate (ammonium nitrate).
Thus, selecting suitable phase-change material for use still is to have very wide space as heat-storing material to be used for water heater.
Summary of the invention
In order to address the above problem, the invention provides a kind of electric heater, especially a kind of paraffin accumulating type electric water heater.
According to the present invention, a kind of paraffin accumulating type electric water heater is provided, it comprises: insulation shell; Staving, it is contained in this insulation shell, is equipped with water in this staving; Heat exchanger coil is contained in this staving to its coiling, and has water inlet and delivery port; And at least one electric heater, it is contained in this staving, makes its fusing to add heated paraffin; It is characterized in that this electric heater also comprises: paraffin, it is arranged in this staving, as heat storage medium; Water pump, it is used for the water in the staving is circulated, and its inlet is communicated with the bottom of this staving; And water pipe, its arrival end is connected in the outlet of this water pump, and the port of export places the top of this paraffin; In this staving, paraffin and this heat exchanger coil that the water of discharging from this pipe outlet end continues and passes fusing, and after successively carrying out heat exchange, enter the inlet of this water pump with the paraffin of fusing and the water in this heat exchanger coil.
In above-mentioned paraffin accumulating type electric water heater, an electric heater in described at least one electric heater is imbedded in this paraffin.
In above-mentioned paraffin accumulating type electric water heater, this electric heater of imbedding in this paraffin is embedded near the bottom of this paraffin.
In above-mentioned paraffin accumulating type electric water heater, an electric heater in described at least one electric heater places the below of this heat exchanger coil.
In above-mentioned paraffin accumulating type electric water heater, the heating rod of described electric heater is provided with fin.
In above-mentioned paraffin accumulating type electric water heater, described fin is flight-shaped, parallel ring piece shape or aciculiform.
In above-mentioned paraffin accumulating type electric water heater, this water pipe comprises water-main and at least one shower that is connected with this water-main.
In above-mentioned paraffin accumulating type electric water heater, this shower is provided with a plurality of spray orifices, being infused on this paraffin via the water of this water pump circulation.
In above-mentioned paraffin accumulating type electric water heater, this shower communicates with ambient atmosphere.
In above-mentioned paraffin accumulating type electric water heater, also comprise heat insulation layer, it places in this insulation shell, the outside and the end face of this staving.
In above-mentioned paraffin accumulating type electric water heater, this heat insulation layer is a foamed plastics.
In above-mentioned paraffin accumulating type electric water heater, this heat exchanger coil places near the bottom of this staving.
In above-mentioned paraffin accumulating type electric water heater, be formed with storage tank on the diapire of this staving.
In above-mentioned paraffin accumulating type electric water heater, ccontaining this water pump of this storage tank.
In above-mentioned paraffin accumulating type electric water heater, the preferred operating temperature of this paraffin be near its melting temperature to 120 ℃ scope.
According to paraffin accumulating type electric water heater of the present invention, it has possessed the advantage of traditional electrical water heater and gas heater.Be that fan-out capability can satisfy user demand; Heat supply is fast and can supply with hot water long-term and stably; The pressure that do not gather steam, safety in utilization is good; It is good to be under the holding state energy retention after water heater is finished using; Save the compact conformation that the space also can make water heater; And the obtaining easily and low cost of olefin material, thereby the low cost of manufacture of making.No matter technically still economically, paraffin accumulating type electric water heater of the present invention has goodish feasibility thus.
Description of drawings
Accompanying drawing and specification one are used from explains principle of the present invention, and the preferred embodiments of the present invention have been shown in the accompanying drawing, in the accompanying drawings:
Fig. 1 has provided the structural representation according to the paraffin accumulating type electric water heater of first embodiment of the invention;
Fig. 2 a and Fig. 2 b are respectively electric heater running water outlet temperature situation of change under different in flow rate when all opening;
Running water outlet temperature change curve when Fig. 3 is the electric heater Close All; And
Fig. 4 is the structural representation of the paraffin accumulating type electric water heater of second embodiment of the invention.
Wherein, description of reference numerals is as follows:
1 staving, 2 heat exchanger coils, 3 water inlets
4 delivery ports, 5,6,7 electric heaters, 8 paraffin
11 outlets of 9 water pumps, 10 inlets
12 water pipes, 13 water-mains, 14 showers
15 storage tanks
The specific embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing, in the accompanying drawings, identical Reference numeral is represented same or analogous parts.
In electric heater of the present invention, the byproduct-paraffin that adopts oil is as heat storage medium, the very easy acquisition of this material.Paraffin is a kind of phase-change material, and it has very high latent heat and chemical stability.But its thermal conductivity is but very poor, and heat energy is difficult to absorb to solid paraffin or from solid paraffin and discharges thus, so that has limited the application of paraffin in accumulation of heat (Thermal energy storage) technology.
Merely from the specific heat capacity of material (unit mass material temperature raise required heat 1 ℃ the time), specific heat of water holds that much bigger (water is 4.186KJkg than paraffin
-1K
-1(kilojoule per kilogram Kelvin), paraffin is 2.1-2.9KJkg
-1K
-1, 4.186 joules=1 card), thus when the temperature that raises identical, as if the stored heat of paraffin sees thus than water much less what superiority paraffin does not have.But in the water heater of general washing usefulness, the temperature of water generally can be lower than the boiling point of water.And melting point of paraffin wax is generally about 60 ℃, and this fusing point exactly is lower than the boiling point of water, and the heat of the coolant-temperature gage that will be far longer than equal in quality of the latent heat when this moment, paraffin produced phase transformation when changing 1 ℃.That is to say that if the paraffin and the water of heating equal in quality, before not reaching melting point of paraffin wax, the heat that water absorbs will be more than the heat (promptly storing more heat) that paraffin absorbed.After temperature was increased to melting point of paraffin wax, paraffin will be by the solid-state liquid state that becomes, thereby produced phase transformation, absorbed latent heat of phase change, and the heat that this moment, paraffin absorbed will be the rank formula of getting over sharply to be increased, and all is fused into liquid state until paraffin.Under atmospheric pressure, when changing 1 ℃ under the temperature about 60 ℃, water only absorbs or discharges 1 kilocalorie every kilogram heat, and paraffin (27-ane, the mixture of 28-ane and 29-ane) then be 60 kilocalories every kilogram heat, the water that is equivalent to every kilogram is heated to 60 ℃ of stored heats from 0 ℃.In addition, because the specific heat ratio specific heat of water of paraffin appearance is much smaller, under the situation of supplying with same heat, the rising of the temperature of paraffin raises soon than the temperature of water, and paraffin can reach fusing point apace thus, and carries out phase transformation.
Because the paraffin of equal in quality is very big by the heat that phase transformation stores, when causing temperature to continue to raise thus, the phenomenon of the heat that the heat that paraffin stores is still stored greater than water will be present in the relatively large temperature range.Thus, for for the hot water of the uniform temp that general washing usefulness is provided, the characteristic that can store appreciable latent heat when utilizing quick heating phase transformation before the phase transformation, obviously paraffin has suitable superiority.
Thus, although as previously mentioned, the thermal conductivity of paraffin is very poor, so that heat is difficult to absorb to solid paraffin or from solid paraffin and discharges.But, if make full use of its fusing or solidify the latent heat of phase change of generation, then make the absorption of heat or release become quite easy, thereby it can very easily be used in the thermal energy storage technology.
Based on this, in paraffin accumulating type electric heater of the present invention, made full use of the fusing of paraffin or solidified the latent heat of phase change of generation, make the fusing of paraffin and solidify constantly and alternately carry out, thereby realize supplying with fast and stably hot water.
Fig. 1 has provided the structural representation according to the paraffin accumulating type electric water heater of first embodiment of the invention.
As shown in Figure 1, comprise according to paraffin accumulating type electric water heater of the present invention: insulation shell (figure does not show); Staving 1, it is contained in this insulation shell, is equipped with water in this staving 1; Heat exchanger coil 2 is contained in to its coiling in this staving 1 and bottom of close staving 1, and it has water inlet 3 and delivery port 4, and described water inlet 3 and delivery port 4 are used for the running water introducing in the external world and with temperature required hot water output; Three electric heaters 5,6 and 7, it is contained in this staving interior 1; Paraffin 8, it is arranged in this staving interior 1, as heat storage medium; Water pump 9, it is used for the water in the staving 1 is circulated, and it has inlet 10 and outlet 11, and this inlet is communicated with the inner chamber of this staving 1; And water pipe 12, the one end is connected in the outlet 11 of pump 9, and the other end places the top of paraffin 8, is used for annotating at paraffin 8 via the water of pump 9 circulations.
Wherein, in the paraffin accumulating type electric water heater of foundation first embodiment of the invention, electric heater 5 places the bottom of paraffin 8, and described three electric heater one ends link to each other with staving 1, and the other end is imbedded in the paraffin 8.
Wherein, in the paraffin accumulating type electric water heater of foundation first embodiment of the invention, water pipe 12 comprises water-main 13 and at least one shower that is connected with water-main 14.On shower 14, be provided with a plurality of holes, being injected on the paraffin 8 via the water of water pump 9 circulations.
Wherein, in the paraffin accumulating type electric water heater of foundation first embodiment of the invention, be formed with storage tank 15 on the diapire of staving 1, it is used for ccontaining water pump 9, thereby can make paraffin accumulating type electric water heater compactness of the present invention further.
Wherein, in the paraffin accumulating type electric water heater of foundation first embodiment of the invention, heating rod on the described electric heater is provided with spirality fin (figure does not show), increased the heat exchange area of heating rod thus, thereby made heating rod and other relevant portion (as paraffin or water) carry out heat exchange apace.
The following describes running according to the paraffin accumulating type electric water heater of first embodiment of the invention.
To the electric heater energising, running water is infeeded from water inlet 3.Three electric heaters 5,6,7 produce heat, and heat is passed to the part paraffin that contacts with the spirality fin via the spirality fin on its heating rod, this part paraffin temperature raises fast, when the temperature of this part paraffin reaches its fusing point, begin fusing, this moment, paraffin produced phase transformation, absorbed latent heat of phase change, and this moment is stored by paraffin from the big calorimetric of heating rod.This moment is because each electric heater one end is connected in the inwall of staving 1, thus at first between the inwall of paraffin and staving 1, form the gap between electric heater and the paraffin contact portion, then in the process that paraffin constantly melts, to form the space gradually in paraffin inside, these gaps and space have formed the part path that the water in the staving 1 circulates.
The storage tank 15 interior water pumps 9 that are installed in staving 1 this moment are worked, it is discharged the water in the staving 1 (temperature of the water of staving 1 bottom is lower than the temperature of the water at other position at this moment) by the inlet 10 that is installed in staving 1 bottom from the bottom suction of staving 1 and by outlet 11, the water of discharging is annotated above paraffin 8 via the hole on the shower 14 at last because the pressure effect of water pump 9 is flowed and arrival shower 14 along water-main 13.Pass in the process of paraffin at the water that drenches on melted paraffin, the paraffin of water and fusing carries out heat exchange, thereby the paraffin temperature of fusing is reduced fast, when the paraffin temperature of fusing is reduced to its fusing point, produce phase transformation, solid-state thereby paraffin becomes from liquid state, to discharge a large amount of latent heat this moment, because it is more much bigger than paraffin that specific heat of water holds, so water absorbs this latent heat apace, the water that sprays thus on paraffin is heated rapidly.
Because the density of water greater than the density of paraffin, so the water of pouring on paraffin will pass the flow passage of the inner water that forms of paraffin, sinks down into the bottom of paraffin from the paraffin of fusing.This moment is because the swabbing action of water pump 9, the hot water that sinks to the paraffin bottom side is passed heat exchanger coil 2 fast forcibly, the running water of the hot water that sinks when passing heat exchanger coil 2 and in the heat exchanger coil 2 carries out heat exchange, thereby the running water in the heat exchanger coil 2 is heated fast and stably.
Carry out the bottom that the temperature of this part water after the heat exchange reduces and sink to staving 1 with running water in the heat exchanger coil 2, and then, circulate again by water pump 9 suctions.
In said process, the fusing of paraffin, solidify intersection and carry out repeatedly, make paraffin constantly absorb or discharge latent heat of phase change, thereby fast and stable ground heat the running water in the heat exchanger coil 2.
In above-mentioned operate as normal, even the water below paraffin 8 at high temperature produces the steam of high pressure, by shower and ambient atmosphere are connected, water pump 9 strengthen in the stavings 1 water fast the paraffin of circulation and fusing because its density is lower than the top that water is attached to water, thereby also can avoid the further generation of steam and upwards mobile, making that the steam pressure of water of staving 1 is very little even exists, thereby has guaranteed safe in utilization.In addition, under normal condition of work, paraffin itself has still quite low paraffin steam pressure, thereby has further guaranteed safe in utilization.
After this paraffin accumulating type electric water heater is finished using,, simultaneously the water inlet of running water is closed and stop pump electric heater outage.Electric heater will be in the preceding holding state of task down this moment.The paraffin of fusing and the water of staving 1 still carry out heat exchange in staving 1, thereby solidify and discharge latent heat of phase change gradually, and heated water also can further add heated paraffin in the staving 1, reaches balance until the two.The paraffin of fusing this moment will be avoided the further generation of steam and upwards flow, thereby guarantee the security after water heater is shut down.Because the insulation effect and the low-down thermal conductivity characteristics of solid paraffin of insulation shell 1, temperature reach paraffin after the balance and the water in the staving 1 with the insulation quite a long time.Thus, under the blanking time between twice start short situation, in the time of can utilizing last start more fully hold the heat of staying, improve the speed that this paraffin accumulating type water heater provides hot water further, thereby further reduced preheating time.
After this paraffin accumulating type electric water heater is finished using, with this electric heater outage, simultaneously the water inlet of running water is closed, and make water pump 9 still keep work, then water still can still be in the path that forms in the liquid paraffin by part and wander in the bottom of staving 1, up to the paraffin total blockage of solidifying till the water circulation path in the staving 1.The benefit that adopts this mode to handle is, can avoid after the water heater outage, and the water vapor pressure in the staving 1 is accumulated, and can also continue to supply with a period of time hot water in heater outage back simultaneously.This phenomenon means that accumulating type electric water heater of the present invention can obtain high relatively energy efficiency, thereby can saves energy.
Provide the measurement result of paraffin accumulating type electric water heater under some concrete service condition below according to first embodiment of the invention.
Staving 1 is of a size of 30 * 15 * 35 cubic centimetres, and it is made by stainless steel.In staving 1, be equipped with 10 liters of (recording) paraffin (about 59 ℃ of fusing point), in staving 1, be equipped with 1 premium on currency at 70 ℃.Three 1KW electric heaters.The diameter of the storage tank 15 of bucket 1 is 8 centimetres, is 3 centimetres deeply.
Open three 1KW heaters and water pump.Running water flows in heat exchanger coil 2 with constant speed.Measure the temperature of running water at water inlet 3 with glass-stem thermometer, the temperature that records is 27 ℃.Detect the temperature of running water by the K-formula thermocouple that is connected with the data capturing system of computer at delivery port 4.
Fig. 2 a and Fig. 2 b are respectively electric heater running water outlet temperature situation of change under different in flow rate when all opening.Article two, curve all illustrates temperature decline fast in first each 5 minutes to 10 minutes, and curve becomes mild gradually subsequently.This is the water of the circulation in the staving 1 and the heat exchange between the running water in the heat exchanger coil 2 reaches balance gradually from the imbalance at initial stage result.Running water in the heat exchanger coil 2 depends on the geometry of initial temperature, the coil pipe of running water, hot bearing capacity that water staving 1 in circulates, the temperature etc. of water in the staving 1 in the temperature at delivery port 4 places.Can see from Fig. 2 a and Fig. 2 b that simultaneously running water, only changes 5 minutes (flow velocity is 5.71 liters/minute) or became relatively stable after (flow velocity is 4 liters/minute) in 10 minutes in the temperature at delivery port 4 places of running water coil pipe 2 in 1 ℃ of scope.Even in the stage early of these curves, rate of temperature change is also little, this can be easy to manual adjustment in actual use.
Running water outlet temperature change curve when Fig. 3 has provided the electric heater Close All, this moment, paraffin was in whole molten states and water pump maintenance operation, and as can be seen from Figure 3, the outlet hot water of running water will keep certain hour behind the electric heater Close All.
According in the electric heater of the present invention, the preferred operating temperature of paraffin of the present invention be near melting temperature to 120 ℃ scope, paraffin has the boiling point that water temperature in quite low steam pressure and the staving 1 will be lower than water in the time of 120 ℃.In addition, by shower and ambient atmosphere are connected, water pump 9 strengthen in the stavings 1 water fast the paraffin of circulation and fusing be attached to the modes such as top of water, even exist in being controlled in the steam pressure of water and paraffin very among a small circle.
In order further to improve the energy output of paraffin accumulating type electric water heater of the present invention, promptly improve the outlet water temperature of running water, the present invention has provided the structure of first embodiment has been carried out improved second embodiment.
Fig. 4 is the structural representation of the paraffin accumulating type electric water heater of second embodiment of the invention.This system has kept the basic structure of first embodiment.Omitted the detailed description of its structure at this.
In the second embodiment of the present invention, the coiling number of heat exchanger coil 2 increases, and can increase more fin simultaneously; Water pump 9 discharge capacities are bigger, to strengthen the water circulation; Shower 14 can adopt the more design of expansion, so that cover bigger spray zone, the spray orifice on it reduces simultaneously, makes the size of water droplet become littler, thereby the effective area of heat absorption is increased; Paraffin 8 makes longer, so that heat absorption path and soak time are elongated; Paraffin 8 bottoms and only be lower than heat exchanger coil 2 below two electric heaters 6 and 5 are installed respectively, this can make by shower and spray on the paraffin 8 and the hot water of circulation and heat running water the heat exchanger coil 2 together rapidly from the hot water that circulates by heater 5 and water pump 9 below heat exchanger coil 2 downwards, thereby has improved the efficiency of heating surface.
In all embodiment of the invention described above, the position of electric heater is not limited to horizontal level, makes effectively fusing of paraffin as long as it can reach.In addition, fin can have multiple shape, and as parallel ring piece shape, needle-like etc., and each electric heater can be installed above-mentioned fin.
According to paraffin accumulating type electric water heater of the present invention, it has possessed the advantage of traditional electrical water heater and gas heater.Be that fan-out capability can satisfy user demand; Heat supply is fast and can supply with hot water long-term and stably; The pressure that do not gather steam, safety in utilization is good; It is good to be under the holding state energy retention after water heater is finished using; Save the compact conformation that the space also can make water heater; And the obtaining easily and low cost of olefin material, thereby the low cost of manufacture of making.No matter technically still economically, paraffin accumulating type electric water heater of the present invention has goodish feasibility thus.
Although in the present invention, provided the preferred embodiments of the present invention with the form of example, the present invention is not limited to above-mentioned concrete structure.As long as in the scope of the claim that does not break away from spirit of the present invention and enclose, but modifications and variations of the present invention are, and also these modifications and variations all will contain within the scope of the invention.
Claims (15)
1. paraffin accumulating type electric water heater, it comprises: insulation shell; Staving, it is contained in this insulation shell, is equipped with water in this staving; Heat exchanger coil is contained in this staving to its coiling, and has water inlet and delivery port; And at least one electric heater, it is contained in this staving, makes its fusing to add heated paraffin;
It is characterized in that:
This electric heater also comprises:
Paraffin, it is arranged in this staving, as heat storage medium;
Water pump, it is used for the water in the staving is circulated, and its inlet is communicated with the bottom of this staving; And water pipe, its arrival end is connected in the outlet of this water pump, and its port of export places the top of this paraffin;
In this staving, paraffin and this heat exchanger coil that the water of discharging from this pipe outlet end continues and passes fusing, and after successively carrying out heat exchange, enter the inlet of this water pump with the paraffin of fusing and the water in this heat exchanger coil.
2. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: an electric heater in described at least one electric heater is imbedded in this paraffin.
3. paraffin accumulating type electric water heater as claimed in claim 2 is characterized in that: this electric heater of imbedding in this paraffin is embedded near the bottom of this paraffin.
4. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: an electric heater in described at least one electric heater places the below of this heat exchanger coil.
5. as claim 2,3 or 4 described paraffin accumulating type electric water heaters, it is characterized in that: the heating rod of described electric heater is provided with fin.
6. paraffin accumulating type electric water heater as claimed in claim 5 is characterized in that: described fin is flight-shaped, parallel ring piece shape or aciculiform.
7. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: this water pipe comprises water-main and at least one shower that is connected with this water-main.
8. paraffin accumulating type electric water heater as claimed in claim 7 is characterized in that: this shower is provided with a plurality of spray orifices, being infused on this paraffin via the water of this water pump circulation.
9. paraffin accumulating type electric water heater as claimed in claim 7 is characterized in that: this shower communicates with ambient atmosphere.
10. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: also comprise heat insulation layer, it places in this insulation shell, the outside and the end face of this staving.
11. paraffin accumulating type electric water heater as claimed in claim 10 is characterized in that: this heat insulation layer is a foamed plastics.
12. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: this heat exchanger coil places near the bottom of this staving.
13. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: be formed with storage tank on the diapire of this staving.
14. paraffin accumulating type electric water heater as claimed in claim 13 is characterized in that: ccontaining this water pump of this storage tank.
15. paraffin accumulating type electric water heater as claimed in claim 1 is characterized in that: the preferred operating temperature of this paraffin is in the scope of its melting temperature to 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100057698A CN100535575C (en) | 2006-01-06 | 2006-01-06 | Paraffin accumulating type electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100057698A CN100535575C (en) | 2006-01-06 | 2006-01-06 | Paraffin accumulating type electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995852A CN1995852A (en) | 2007-07-11 |
| CN100535575C true CN100535575C (en) | 2009-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100057698A Active CN100535575C (en) | 2006-01-06 | 2006-01-06 | Paraffin accumulating type electric water heater |
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| CN (1) | CN100535575C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072578A (en) * | 2011-01-27 | 2011-05-25 | 浙江斯帝特新能源有限公司 | Heat-preservation water tank of solar water heater |
| CN107036288B (en) * | 2017-06-21 | 2023-07-18 | 济南金孚瑞供热工程技术有限公司 | Multi-working-condition heat accumulating type electric boiler |
| CN110749086B (en) * | 2019-10-27 | 2021-06-29 | 葛军 | Spraying type circulating heater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2145349Y (en) * | 1992-12-11 | 1993-11-03 | 梁鸿谟 | Automatic temp. controlled apparatus for hot-water apparatus |
| CN1363802A (en) * | 2002-02-01 | 2002-08-14 | 钢铁研究总院 | Heat accumulator for electric heating and its making method |
-
2006
- 2006-01-06 CN CNB2006100057698A patent/CN100535575C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2145349Y (en) * | 1992-12-11 | 1993-11-03 | 梁鸿谟 | Automatic temp. controlled apparatus for hot-water apparatus |
| CN1363802A (en) * | 2002-02-01 | 2002-08-14 | 钢铁研究总院 | Heat accumulator for electric heating and its making method |
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| Publication number | Publication date |
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| CN1995852A (en) | 2007-07-11 |
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