CN101446447B - Electric water heater and heating method thereof - Google Patents
Electric water heater and heating method thereof Download PDFInfo
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- CN101446447B CN101446447B CN2007101904662A CN200710190466A CN101446447B CN 101446447 B CN101446447 B CN 101446447B CN 2007101904662 A CN2007101904662 A CN 2007101904662A CN 200710190466 A CN200710190466 A CN 200710190466A CN 101446447 B CN101446447 B CN 101446447B
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Abstract
The invention provides an electric water heater (1), comprising a water tank (2), a water inlet passage (3), a water outlet passage (4), and a first heating element (5) used for heating water stored in the water tank (2) as well as a second heating element (6). The electric water heater is characterized in that the second heating element (6) is used for preheating the water flowing in the water inlet passage (3). Therefore, the heating time of the electric water heater can be shortened, and the existing high temperature protection system can not be complicated. The invention also provides a heating method of the electric water heater.
Description
[technical field]
The present invention relates to a kind of electric heater, it comprises: water tank, intake tunnel, exhalant canal, be used for heating first heating element heater that is stored in the water in the said water tank, and second heating element heater.The invention still further relates to a kind of heating means of electric heater.
[background technology]
Such electric heater is known.For example, Chinese patent 200520060287.3 has disclosed the electric heater with two heating element heaters.This electric heater comprises inner bag, is positioned at the inner small inner container of inner bag and lays respectively at inner bag and small inner container is inner first heating element heater and second heating element heater.Said small inner container is connected with the outlet pipe of electric heater.In use, earlier by the water in second heating element heater heating small inner container, when the water of treating small inner container is heated to the temperature that a temperature controller sets, again by the water in first heating element heater heating inner bag.When the water in inner bag is heated to the temperature of another one temperature controller setting, then stop heating.In this electric heater, by the first heating element heater preheating, being housed in water in the inner bag can be through the further heating of second heating element heater and finally used by the user.
For this electric heater, if the water in the inner bag keeps higher preheat temperature, for example 75 degrees centigrade, for example exceed 85 degree centigrade through the temperature of the water of heating will be very high for the second time this moment, even higher and cause gasification.On the one hand, so high temperature causes incrustation scale to form with being more prone to, and electric electric heater related components is damaged easily.Therefore for the electric heater of this structure, the temperature of the water in the inner bag must remain on the lower level.
On the other hand, because the temperature of hot water is relevant with the unit interval water yield of small inner container, therefore in the smaller family/area of hydraulic pressure, the water in the small inner container especially needs temperature control.Yet; Because the maximum temperature of electric heater is the top that is positioned at small inner container, therefore relative maximum temperature normally is positioned at the existing electric heater at inner bag top, need design the high temperature protection system again; The design of this can be complicated whole electric heater system, and then increase cost.
[summary of the invention]
The object of the present invention is to provide a kind of electric heater electric heater of heat time heating time that shortens.
Another object of the present invention is to provide a kind of heating means that shorten the electric heater of electric heater heat time heating time.
Therefore, the present invention relates to a kind of electric heater, comprising: water tank, intake tunnel, exhalant canal, be used for heating first heating element heater that is stored in the water in the said water tank, and second heating element heater; It is characterized in that: said second heating element heater is configured to be used for preheating the water that in said intake tunnel, flows.
Because water can be that is to say that the relative running water of temperature of the water that gets into water tank increased by preheating before getting into water tank, therefore can shorten the heat time heating time of electric heater greatly.In addition, because second heating element heater is used for heating flowing cold water, on the one hand, cold water can be heated effectively, is not easy to occur incident heat on the other hand, and the high-temperature temperature control of electric heater is not complicated and can expects.
Other combine separately or with other characteristics and the characteristic that is considered to characteristic of the present invention will be set forth in following additional claim.
One preferred embodiment according to the present invention; Can also comprise the control module that couples with said second heating element heater; This control module comprises a detecting unit; This detecting unit and the related setting of said intake tunnel and/or exhalant canal, in order to the flow information of water of acquisition intake tunnel, thereby control module can be controlled said second heating element heater based on the flow information of water that detection obtains.Advantageously, said flow information of water comprises the temperature that whether has water to flow to the water that flows in unit interval discharge and/or the intake tunnel of water tank, intake tunnel via intake tunnel.
Preferably, said detecting unit comprises a water flow switch.
According to a preferred implementation of the present invention; Said control module so is provided with: when having current direction water tank and said first heating element heater not to work in the intake tunnel; It controls the said second heating element heater work, thereby has prevented dry combustion method, or the unnecessary energy loss of second heating element heater.In addition, because first heating element heater and second heating element heater can not worked simultaneously, on the one hand, the power of the two has bigger range of choice, on the other hand, can avoid the overload operation of family's electrical network reliably.
Though second heating element heater also can be arranged on outside the intake tunnel, according to a preferred implementation of the present invention, said second heating element heater is arranged in the said intake tunnel, thereby the water that flows in the intake tunnel can effectively be heated.
One especially preferred embodiment in, said second heating element heater is arranged on the end of said intake tunnel, the heat loss that produces in the time of therefore can effectively reducing even avoid preheated water in intake tunnel, to flow.Particularly preferably; Said intake tunnel comprises the part that extends into water tank, and said second heating element heater part at least is positioned at the part that extends into water tank of said intake tunnel, thereby can avoid the temperature of intake tunnel to diffuse in the external environment condition; Thereby the minimizing heat dissipation capacity improves heat utilization efficiency.
Particularly preferably, said second heating element heater is Instant heating type heating element heater, and particularly advantageous is that its power is not more than 3.5 kilowatts.
In a particularly advantageous embodiment, also comprise can by user control, in order to select whether need start the switch of said second heating element heater.Therefore, the user might be as required, and for example factors such as hot water use amount, service time are selected whether need in use carry out preheating to cold water.This switch can be given tacit consent to disconnection, therefore, when the user only need use a small amount of hot water, for example washes one's hands, when washing dish, and second heating element heater can not start, thereby saves the energy.When the user needs a large amount of hot water, when for example many people have a bath continuously, can close this switch, thereby second heating element heater can start in the process of user's water, thereby shorten heat time heating time.
The invention still further relates to the heating means of above-mentioned electric heater, it is characterized in that comprising: preheat the water that flows to water tank in intake tunnel.
One preferred embodiment in, said method comprises: detect in the intake tunnel whether the current direction water tank is arranged; And when the current direction water tank is arranged in the intake tunnel, the second heating element heater work.
Another preferred embodiment in, said method comprises: detect the step whether the current direction water tank is arranged in the intake tunnel; Judge the step whether first heating element heater works; And when having the current direction water tank and first heating element heater not to work in the intake tunnel, the step of the said second heating element heater work.
Another preferred embodiment in, said method comprises: detect in the intake tunnel whether the current direction water tank is arranged, and calculate the duration that water flows is arranged in the intake tunnel continuously; Judge whether first heating element heater works; And during this duration is preset more than or equal to one and when confirming that said first heating element heater is not worked, the said second heating element heater work.
The electric heater of another embodiment of the present invention comprises:
Water tank is used to store a certain amount of heated water;
Intake tunnel and exhalant canal and water tank are communicated with the water that flows into water tank and outflow water tank to be used for transmitting;
First heating element heater is used to heat the water that is stored in the water tank;
Second heating element heater is used to heat the water that in intake tunnel, flows;
Control module couples with said first and second heating element heaters, and said control module comprises the detecting unit that is used to detect the flow information of water in the intake tunnel, and said flow information of water comprises the information that whether has water to flow into water tank.
The present invention also has the electric heater of another embodiment, comprising:
Water tank is used to store a certain amount of heated water;
Intake tunnel and exhalant canal and water tank are communicated with the water that flows into water tank and outflow water tank to be used for transmitting;
First heating element heater is used to heat the water that is stored in the water tank;
Second heating element heater is used to heat the water that in intake tunnel, flows;
Control module couples with said first and second heating element heaters, and said control module comprises and is used to detect the detection of information unit that whether has water to flow into water tank in the aquaporin.
As further improvement of the present invention, said water heater also comprises the temperature sensor of the temperature that is used for detecting inner bag water; Said control module also is used to receive the signal of the temperature value of the expression water that comes from temperature sensor, and
When detected water temperature value during, start first heating element heater less than first preset temperature value (T2); Or
When detected water temperature value during more than or equal to second preset temperature value (T1), make first heating element heater be in off position, wherein second preset temperature value (T1) is higher than first preset temperature value (T2).
As further improvement of the present invention, said second heating element heater is used to heat the water that in intake tunnel, flows.
Structure of the present invention and its other goals of the invention and beneficial effect will be more obviously understandable through the preferred implementation of describing below in conjunction with accompanying drawing.
As the part of specification and in order to providing to further understanding of the present invention, the following accompanying drawing diagram specific embodiment of the present invention, and be used for explaining principle of the present invention with specification.Wherein,
Fig. 1 is the sketch map according to the electric heater of a preferred embodiment of the invention.
Fig. 2 is the heating means schematic flow sheet according to a preferred embodiment of the invention electric heater.
Fig. 3 is the heating means schematic flow sheet of another preferred implementation electric heater according to the present invention
[specific embodiment description]
In the specific descriptions to preferred implementation below, identical or similar characteristic has identical Reference numeral.
Please with reference to accompanying drawing, at first please especially with reference to Fig. 1.Electric heater 1 comprises and is used for the water tank 2 of water storage.Water tank 2 is coated with shell (not shown), and between shell and water tank 2, fills the heat-insulation layer (not shown) that is for example formed by foaming, to reduce thermal loss.Water tank 2 is connected with water source (for example running water pipe) through intake tunnel 3, thereby intake tunnel 3 carries cold water to get into water tank 2.The user obtains through the water after the heating from water tank 2 through exhalant canal 4.The inlet 40 of exhalant canal 4 is positioned at the top of water tank 2 to obtain hot water, and the outlet 30 of intake tunnel 3 then is positioned at the bottom of water tank 2.
In the embodiment shown in fig. 1, electric heater 1 is the horizontal type structure.Obviously, electric heater 1 also can be arranged by vertical structure.
First heating element heater 5 extends in the water tank 2 from an end of water tank 2, and it comprises in order to resistive element, the thermal conductive shell of heating and between resistive element and metal shell, is electrically insulated but the good material of thermal conductivity magnesia for example.Thereby the water that the heat transferred that first heating element heater 5 produces is stored in the water tank 2 raises the temperature that is stored in the water in the water tank 2.
At the close region of first heating element heater 5, be provided with temperature sensor 9, in order to detect the temperature of the water in the water tank 1.Based on the information that this temperature sensor 9 obtains, the duty of first heating element heater 5 is controlled.In the present embodiment, this temperature sensor 9 couples with the control module 8 of control electric heater 1, and this temperature sensor 9 detects the information that obtains and is transmitted to control module 8, control module 8 and then control first heating element heater 5.Particularly, when temperature sensor 9 detected temperature during more than or equal to a preset temperature T1 (can be provided with by the user usually), first heating element heater 5 quits work or keeps not working.When detected temperatures during less than T2, first heating element heater 5 starts, and after the temperature that temperature sensor 9 is detected reached T1, first heating element heater 5 quit work, wherein, and T2=T1-T
Drop, T
DropUsually the manufacturer by electric heater 1 is provided with for example 5 degrees centigrade.
Electric heater 1 also comprises second heating element heater 6 with intake tunnel 3 related settings.This second heating element heater 6 is used for preheating the water that flows to water tank 2 at said intake tunnel 3.In one embodiment of the invention, as shown in Figure 1, second heating element heater 6 is arranged in the intake tunnel 3.When second heating element heater 6 started, flowing cold water was heated in intake tunnel 3, thereby the temperature that gets into the water of water tank 2 is raised.Preferably, this second heating element heater 6 is arranged on the end of said intake tunnel 3, the heat loss that produces in the time of therefore can effectively reducing even avoid preheated water in intake tunnel 3, to flow.The preferably instantaneous heating element heater of second heating element heater 6, second heating element heater, 6 power preferably are not more than 3.5 kilowatts.
Because water can be that is to say that the relative running water of temperature of the water that gets into water tank 2 increased by preheating before getting into water tank 2, therefore can shorten the heat time heating time of electric heater 1 greatly.In addition, because second heating element heater 6 is a heating cold water, so it is not easy to occur incident heat, and the high-temperature temperature control of electric heater is not complicated and can expects.
Second heating element heater 6 couples with above-mentioned control module 8, thereby control module 8 can be controlled the duty of second heating element heater 6.In the present embodiment, whether control module 8 controls second heating element heater 6 works.In a further embodiment, also can to control the power of second heating element heater 6 also be possible to control module 8.
In order to prevent dry combustion method and unnecessary energy loss; Control module 8 only has under the situation of current direction water tank 2 at intake tunnel 3, just might start second heating element heater 6, in other words; Do not having current to get under the situation of water tank 2 through intake tunnel 3, said second heating element heater 6 is not worked.Therefore, control module 8 comprises the detecting unit 7 that is arranged on intake tunnel 3, to obtain the flow information of water in the intake tunnel 2.In the present embodiment, whether detecting unit 7 detects and has water to flow to water tank 2 from intake tunnel 3.In the present embodiment, detecting unit 7 is realized through water flow switch.This water flow switch can comprise the parts that change the position because of current, and can produce signal thus.Particularly, from there not being water flows mobile when making above-mentioned position component change (for example from the primary importance to the second place) to what water flows and water arranged in the intake tunnel 3, water flow switch produces a signal; From water flows being arranged when not having water flows (for example static) and this current to change to make above-mentioned position component to change (for example from the said second place to said primary importance) in the intake tunnel 3, water flow switch produces another signal.The signal feedback that detecting unit 7 produces is given control module 8.Whether control module 8 is controlled second heating element heater 6 based on the signal of detecting unit 7 and is worked.
About the concrete structure of water flow switch, can be referring to prior art, for example Chinese patent ZL00201930.2, Chinese patent ZL01206460.2 and Chinese patent ZL200620014959.1 do not remake specific descriptions at this.
Preferably, when the signal that produces according to detecting unit 7 when control module 8 defined water and flows to water tank 2 via intake tunnel 3, control module 8 judged whether first heating element heater 5 works.The judgement whether first heating element heater 5 works can obtain through judging whether first heating element heater 5 is connected, and also can judge through the temperature of the water in the water tank 2 that temperature sensor 9 is detected.The signal that produces according to detecting unit 7 when control module 8 defines water and flows to water tank 2 via intake tunnel 3, and when confirming that said first heating element heater 5 is not worked, it makes 6 work of said second heating element heater.If no longer including water flows in the intake tunnel 3 is reduced to T2 because of the water temperature in the water tank 2 or starts then second heating element heater, 6 disconnections below the T2 to the water tank 2 (for example the user stops using) or first heating element heater 5.
For example, in use, in the higher water of the top acquisition temperature of water tank 2, the bottom of water tank 2 is filled by the water of carrying from intake tunnel 3 and coming the user.Therefore, obtain to be arranged in the process of the higher water of the temperature on water tank 2 tops from exhalant canal 4, be positioned at the lower water of the temperature of water tank 2 bottoms and move on gradually the user.The hot water that the user uses reach a certain amount of after, the warm spot of adopting that rises to temperature sensor 9 waterborne that temperature is lower, thus detected temperature value is corresponding diminishes for temperature sensor 9.When this detected temperatures value during less than above-mentioned T2, thereby first heating element heater 5 starts, and second heating element heater 6 correspondingly quits work.Therefore; In the present embodiment, because first heating element heater 5 and second heating element heater 6 can not worked simultaneously, this can prevent the work overload operation of family's electrical network because of electric heater 1 on the one hand; The power of first heating element heater 5 and second heating element heater 6 has bigger range of choice on the other hand; For example the power of second heating element heater 6 can reach 2.5 to 3.5 kilowatts, and for example 3 kilowatts, and then make cold water obtain bigger temperature rise.
Whether top embodiment only detects with detecting unit 7 to have water to flow to water tank 2 through intake tunnel 3.Need to prove that this only is preferred embodiment of the present invention, the present invention is not limited to this.For example; Detecting unit 7 can flowmeter obtains the unit interval discharge information of water in the intake tunnel 3 and/or obtains the temperature information of water in the intake tunnel 3 with temperature sensor, so further accurately the duty of control second heating element heater 6 also be fine.For example, when the unit interval of intake tunnel 3 discharge during less than a preset value, it is overheated to prevent intake tunnel 3 not start second heating element heater 6.And for example, during as 20 degrees centigrade, second heating element heater 6 does not start the temperature of the water in detecting unit 7 records intake tunnel 3 greater than a preset value.
In addition; Detecting unit 7 also can be arranged on the exhalant canal 4, and whether be used for detecting whether there are flowing out water tank 2 and then obtaining has water to flow to water tank 2 from intake tunnel 3, perhaps; On exhalant canal 4 and intake tunnel 3, all be provided with detecting unit 7; Because for water-storage electric heater, when water is arranged from exhalant canal 4 outflows, generally just have water and get into water tanks 2 from intake tunnel 3.
Second heating element heater 6 shown in Figure 1 is positioned at outside the water tank 2; Yet in another embodiment; Second heating element heater 6 also can be along with intake tunnel 3 extends into water tank 2 and at least partly is positioned at water tank 2; This mode can reduce even avoid the heat of the water in the intake tunnel 3 to diffuse in the external environment condition, and then reduces heat dissipation capacity, improves heat utilization efficiency.
In an alternative embodiment; When the signal that produces according to detecting unit 7 when control module 8 defines water and flows to water tank 2 via intake tunnel 3; Second heating element heater 6 just can start, and when intake tunnel 3 no longer included current direction water tank 2, second heating element heater 6 quit work.That is to say that second heating element heater 6 is that water flowing is then switched on, the then outage of cutting off the water supply.In this embodiment, first heating element heater 5 and second heating element heater 6 might be worked simultaneously.Therefore, the power sum of first heating element heater 5 and second heating element heater 6 preferably is no more than 3.5 kilowatts.
In a particularly advantageous embodiment, electric heater 1 comprises the switch by user's control, selects whether need in water utilizing process, start second heating element heater 6 for the user.This switch can be arranged on the control panel of electric heater 1.Said switch can be connected with detecting unit 7, and under the situation that switch breaks off, the information that detecting unit 7 is detected can not feed back to detecting unit, and therefore second heating element heater 6 can not start.This switch also can be connected with second heating element heater 6, and under the situation that switch breaks off, second heating element heater 6 can not start.In addition, realize also having passable through mode to control module 8 programmings.Therefore, the user can be as required, and for example factors such as hot water use amount, service time are selected whether need in use carry out preheating to cold water in advance.This switch Ke Yi Wei Chang Kai or normally closed switch., when only need using a small amount of hot water, as wash one's hands or during single shower, the user can have nothing to do with make and break closes, thereby in its water utilizing process, second heating element heater 6 can not start, under the situation about often opening at switch to save the energy.Need a large amount of hot water and work as the user, when for example many people had a bath continuously, the user can close this switch, thereby second heating element heater 6 can start in the process of user's water, to shorten heat time heating time.
Fig. 2 illustrates the heating means according to the electric heater of a preferred embodiment of the invention.After the fills with water, first heating element heater 5 can be started working in water tank 2.The temperature that first heating element heater 5 records at temperature sensor 9 quits work when arriving T1.When temperature sensor 9 detected temperature were lower than T2, first heating element heater 5 started, and arrived T1 until temperature sensor 9 detected temperature.
Second heating element heater 6 whether work with intake tunnel 3 in flow information of water relevant.Therefore, whether the flow information of water that detecting unit 7 detects in the intake tunnel 3 is to detect to have water in intake tunnel 3, to flow to water tank 2 in the present embodiment.If have, then start second heating element heater 6.Do not have current direction water tank 2 in the intake tunnel 3 or no longer include current direction water tank 2 if detect, then do not start or cut off second heating element heater 6.Therefore, the heating means of electric heater 1 according to the present invention, the water before the intake tunnel 3 of flowing through, the entering water tank 2 is preheated.At this moment, the duty of first heating element heater 5 and second heating element heater 6 is separate, that is whether first heating element heater 5 works and temperature sensor 9 detected temperature correlations.Whether second heating element heater 6 works relevant with the flow information of water of intake tunnel 3.In the present embodiment, the power sum of first heating element heater 5 and second heating element heater 6 is no more than 3.5 kilowatts.The power of second heating element heater 6 is preferably lower than 2 kilowatts, preferably 1-1.5 kilowatt.
Fig. 3 illustrates the heating means of the electric heater of another preferred implementation according to the present invention.In the present embodiment, whether second heating element heater 6 is worked and is confirmed according to the flow information of water of intake tunnel 3 and the duty of first heating element heater 5.First heating element heater 5 can adopt with top embodiment in identical mode control, do not give unnecessary details at this.The following specifically describes and how to control second heating element heater 6.
Whether at first, detecting unit 7 detects intake tunnel 3 has current inlet water tank 2.If have, judge then whether first heating element heater 5 that is positioned at water tank 2 works.Do not work and detecting unit 7 when having detected current direction water tank 2 when first heating element heater 5, second heating element heater 6 starts.When not having water when intake tunnel 3 is transported to water tank 2 or the work of first heating element heater 5, second heating element heater 6 is not worked.At this moment, it is relevant whether the duty of second heating element heater 6 and first heating element heater 5 work, and the two can not worked simultaneously, and therefore, the power selection scope of heating element heater is bigger, and water can obtain bigger temperature rise after preheating.
In the embodiment shown in fig. 3, whether the water inlet of electric heater 1 works according to first heating element heater 5 and selectively by preheating.Yet the present invention is not limited to this.For example, can also be incorporated into the unit interval discharge of the water that flows in the aquaporin 3 and/or the temperature of the intake tunnel 3 interior water that flow has selection to start the water inlet that second heating element heater 5 preheats electric heater 1.For example, have only when the unit interval of intake tunnel 3 discharge during more than or equal to a preset value, second heating element heater 6 just might be worked.Perhaps, only in the temperature of the water in detecting unit 7 records intake tunnel 3 less than a preset value during as 20 degrees centigrade, second heating element heater 6 just might start.
In another embodiment, also comprise and calculating the duration that water flows is arranged in the intake tunnel 3 continuously, and should the duration compare with (for example 1 minute) during one presets.During the said duration is preset more than or equal to this and when confirming that said first heating element heater 5 is not worked, start said second heating, 6 elements, otherwise second heating element heater 6 is not worked.Likewise, the startup of first heating element heater 5 and close with water tank 2 in the temperature correlation of water.
Reference numerals list
1 electric heater
2 water tanks
3 intake tunnels
4 exhalant canals
5 first heating element heaters
6 second heating element heaters
7 detecting units
8 control modules
9 temperature sensors
Claims (10)
1. an electric heater (1) comprising: water tank (2), intake tunnel (3), exhalant canal (4), be used for heating and be stored in first heating element heater (5) of the water in the said water tank (2) and second heating element heater (6); Said second heating element heater (6) is configured to be used for preheating the water that in said intake tunnel (3), flows, and said second heating element heater is arranged in the said intake tunnel;
It is characterized in that; Also comprise the control module (8) that couples with said second heating element heater (6); This control module (8) comprises a detecting unit (7), and this detecting unit (7) and said intake tunnel (3) and/or the related setting of exhalant canal (4) are in order to obtain the flow information of water in the intake tunnel (3); Said control module (8) so is provided with: current direction water tank (2) and said first heating element heater (5) are arranged when not working in intake tunnel (3), it controls said second heating element heater (6) work.
2. electric heater according to claim 1 (1) is characterized in that, whether said flow information of water comprises has water to flow to the unit interval discharge of water tank (2), intake tunnel (3) and/or the temperature of the interior water that flows of intake tunnel (3) from intake tunnel (3).
3. electric heater according to claim 1 (1) is characterized in that, said detecting unit (7) comprises a water flow switch.
4. electric heater according to claim 1 (1) is characterized in that, said second heating element heater (6) is arranged on the end of said intake tunnel (3).
5. electric heater according to claim 1 (1) is characterized in that, said intake tunnel (3) comprises the part that extends into water tank (2), and said second heating element heater (6) at least partly is positioned at the part that extends into water tank (2) of said intake tunnel (3).
6. electric heater according to claim 1 (1) is characterized in that, said second heating element heater (6) is Instant heating type heating element heater, and its power is not more than 3.5 kilowatts.
7. electric heater according to claim 1 (1) is characterized in that, also comprise can by user control, in order to select whether need start the switch of said second heating element heater (6).
8. the heating means of an electric heater according to claim 1 (1), it includes the water that flows to water tank (2) that selectively preheats in intake tunnel (3); It is characterized in that, also comprise
Detect in the intake tunnel (3) whether current direction water tank (2) is arranged;
Judge whether first heating element heater (5) works; And
Current direction water tank (2) and first heating element heater (5) are arranged when not working in intake tunnel (3), said second heating element heater (6) work.
9. method according to claim 8 is characterized in that, comprises
Calculate the duration that water flows is arranged in the intake tunnel (3) continuously;
And during this duration is preset more than or equal to one and confirm said first heating element heater (5) when not working, said second heating element heater (6) work.
10. the heating means of an electric heater according to claim 1 (1), said intake tunnel and exhalant canal and water tank are communicated with to be used for transmitting and flow into water tank and the water that flows out water tank; Said control module also couples with said first heating element heater, and said electric heater also comprises the temperature sensor of the temperature that is used for detecting inner bag water; Said control module also is used to receive the signal of the temperature value of the expression water that comes from temperature sensor, it is characterized in that, this method comprises
When detected water temperature value during, start first heating element heater less than first preset temperature value (T2); Or
When detected water temperature value during more than or equal to second preset temperature value (T1), make first heating element heater be in off position, wherein second preset temperature value (T1) is higher than first preset temperature value (T2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101904662A CN101446447B (en) | 2007-11-27 | 2007-11-27 | Electric water heater and heating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101904662A CN101446447B (en) | 2007-11-27 | 2007-11-27 | Electric water heater and heating method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101446447A CN101446447A (en) | 2009-06-03 |
| CN101446447B true CN101446447B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101904662A Expired - Fee Related CN101446447B (en) | 2007-11-27 | 2007-11-27 | Electric water heater and heating method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012094B (en) * | 2009-09-04 | 2015-03-25 | 博西华电器（江苏）有限公司 | Water heater |
| CN102900138B (en) * | 2012-10-20 | 2015-05-20 | 浙江怡和卫浴有限公司 | Safe control method for warm water control device for intelligent convenient cover |
| CN104110867B (en) * | 2014-06-03 | 2017-02-01 | 芜湖美的厨卫电器制造有限公司 | Electric water heater, control method of electric water heater and heating power controlling device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357261Y (en) * | 1998-06-09 | 2000-01-05 | 李湘生 | Full-automatic gas (electricity) water heater |
-
2007
- 2007-11-27 CN CN2007101904662A patent/CN101446447B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357261Y (en) * | 1998-06-09 | 2000-01-05 | 李湘生 | Full-automatic gas (electricity) water heater |
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| CN101446447A (en) | 2009-06-03 |
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