CN104110867B - Electric water heater, control method of electric water heater and heating power controlling device and method - Google Patents
Electric water heater, control method of electric water heater and heating power controlling device and method Download PDFInfo
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- CN104110867B CN104110867B CN201410242914.9A CN201410242914A CN104110867B CN 104110867 B CN104110867 B CN 104110867B CN 201410242914 A CN201410242914 A CN 201410242914A CN 104110867 B CN104110867 B CN 104110867B
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Abstract
The invention provides an electric water heater. The electric water heater comprises N electric heating tubes, a temperature detector, a heating power controlling device and a temperature controller. The heating power controlling device comprises power selecting keys, a controller and N power selecting circuits, wherein the power selecting keys receive a user order so as to generate a power signal, the controller generates a power distributing signal according to the power signal, and the N power selecting circuits are in one-to-one correspondence to the N electric heating tubes. Each power selecting circuit comprises a half-wave rectification module and a power selection module. Each first power branch is formed through the half-wave rectification module. Each power selecting module and the corresponding electric heating tube are connected so as to constitute a second power branch. The power selecting modules control closing and opening of the first power branches and the second power branches. The temperature controller controls switching on and switching off of the N electric heating tubes. The electric water heater can provide multiple heating power combination modes and is high in adaptability and convenient to use. The structure of the electric heating tube does not need to be changed, and therefore cost is low. The invention further discloses a control method of the electric water heater and a heating power controlling device and method for the electric water heater.
Description
Technical field
The present invention relates to technical field of electric appliances, particularly to a kind of electric heater, and the control method of electric heater, and
A kind of heating power control device of electric heater and control method.
Background technology
Existing many power electric water heaters can provide the user more more flexible mode of heatings, thus such water heater is very
Popular with users.The water heater of single group electrothermal tube can only export a kind of power, if making electric heater have many power, typically
All realized by changing electrothermal tube structure, the electric heater of for example double groups of electrothermal tube structures is provided that pa (one of which electric heating
Pipe heats), pb (wherein another group electrothermal tube heating), three kinds of power combination of pa+pb (two groups of electrothermal tubes are heated simultaneously).But
It is, by changing the method that electrothermal tube structure increases power combination species, electrothermal tube cost to be led to increase, also increase simultaneously
The installation complexity of electrothermal tube, and then affect the production efficiency of the whole machine of electric heater.
Content of the invention
The purpose of the present invention is intended at least solve to a certain extent above-mentioned technical problem.
For this reason, it is an object of the present invention to proposing a kind of electric heater, this electric heater can provide multiple heating
Power combination, can be more user-friendly with the function of improving product and adaptability.The structure of electrothermal tube need not be changed, become
This is low, will not increase the complexity of electrothermal tube installation, thus not the production efficiency of the impact whole machine of electric heater.In addition can carry
High security, increases the service life.
Further object is that proposing a kind of control method of electric heater.
Another object of the present invention is to propose a kind of heating power control device of electric heater.
A further object of the present invention is to propose a kind of heating power control method of electric heater.
For reaching above-mentioned purpose, an aspect of of the present present invention embodiment proposes a kind of electric heater, and this electric heater includes n
Electrothermal tube, temperature detector, heating power control device and temperature controller, wherein, each electrothermal tube in described n electrothermal tube
One end is all connected with one end of external power source；Described temperature detector is used for detecting the temperature of water in described inner container of electric water heater,
Described temperature detector is connected with described temperature controller；Described heating power control device includes power selection button, controller and n
Individual power selection circuitry, wherein, described power selection button is used for receive user and instructs to generate power signal；Described controller
It is respectively connected with described power selection button and described n power selection circuitry, described controller is given birth to according to described power signal
Success rate distributes signal, and described power distribution signals are sent to described n power selection circuitry；Described n power selection
Circuit is corresponded with described n electrothermal tube, and each power selection circuitry includes half-wave rectification block and power selection module, its
In, the first outfan of described power selection module is connected with one end of described half-wave rectification block, described half-wave rectification block
The other end of one end and corresponding electrothermal tube connect, to constitute the first power leg；The second of described power selection module is defeated
Go out end to connect with the other end of corresponding electrothermal tube, to constitute the second power leg；Described power selection module is according to described work(
The break-make of rate distribution signal described first power leg of control and described second power leg is to select described corresponding electrothermal tube
Heating power；Described temperature controller respectively with the input of each power selection module of described n power selection circuitry, described
The other end of temperature detector and described external power source connects, and described temperature controller is according to the temperature of water in described inner container of electric water heater
Control the break-make of described n electrothermal tube so that described n electrothermal tube is heated with corresponding described heating power respectively.
Electric heater according to embodiments of the present invention, by n power selection circuitry one-to-one with n electrothermal tube,
The connection of the first power leg or the second power leg can be controlled respectively according to power distribution signals, and then to corresponding electric heating
Pipe realizes half-power or flat-out distribution, such that it is able to provide more kinds of power combination species, can be with the function of improving product
And adaptability, more user-friendly, the structure of electrothermal tube need not be changed, the installation strength of electrothermal tube will not be increased, will not
Increase cost, do not affect the production efficiency of the whole machine of electric heater.In addition, each electrothermal tube in n electrothermal tube all can pass through
Half-wave rectification block realizes half-power heating, and in the case of there is electrical power restriction, the adaptability of electric heater is higher.This
Outward, when electrothermal tube is worked with half-power, its surface loading is also reduced to half during full power operation, now the surface temperature of electrothermal tube
Degree reduces, and such that it is able to reducing and delaying to produce high temperature incrustation scale, and then avoids electrothermal tube appearance to occur because incrustation scale assembles heating
The phenomenon of booster, improves the safety of electric heater, can extend the service life of electric heater.
Wherein, in some embodiments of the invention, described power selection module includes: relay unit, described relay
Device unit controls the break-make of described first power leg and described second power leg to select according to described power distribution signals
The heating power of described corresponding electrothermal tube.
In addition, in some embodiments of the invention, above-mentioned electric heater also includes plant-grid connection device, and described power supply connects
The first input end entering device is connected with one end of described external power source, the second input of described plant-grid connection device with described
Other end connection, the first outfan of described plant-grid connection device and each electrothermal tube of described n electrothermal tube of external power source
One end be respectively connected with, the second outfan of described plant-grid connection device is connected with described temperature controller.
For reaching above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of control method of electric heater, described
Electric heater includes n electrothermal tube and heating power control device, and described heating power control device includes n power selection electricity
Road, described n power selection circuitry is corresponded with described n electrothermal tube, and described n power selection circuitry includes first respectively
Power leg and the second power leg, the first power leg includes half-wave rectification block, the control method bag of described electric heater
Include following steps: receive user selection instruction is to generate power signal；Power distribution signals are generated according to described power signal, and
Described power distribution signals are sent to described n power selection circuitry；Pass through described n work(according to described power distribution signals
Rate selection circuit controls the break-make of corresponding described first power leg and the second power leg respectively, to select described n respectively
The heating power of individual electrothermal tube；And according to the temperature control of water in described inner container of electric water heater n electrothermal tube break-make,
So that described n electrothermal tube is heated with corresponding described heating power respectively.
The control method of electric heater according to embodiments of the present invention, by controlling n one-to-one with n electrothermal tube individual
Power selection circuitry selects the connection of the first power leg or the second power leg, and then realizes half-power to corresponding electrothermal tube
Or flat-out distribution, such that it is able to provide more kinds of power combination species, more user-friendly.In addition, passing through n work(
Rate selection circuit controls the first power leg to connect, and each electrothermal tube in n electrothermal tube all can realize half-power heating,
Exist in the case that electrical power limits so that the adaptability of electric heater is higher.Additionally, by controlling electrothermal tube with half-power work
Make, it is possible to reduce and delay to produce high temperature incrustation scale, and then avoid electrothermal tube appearance to occur because incrustation scale assembles heating showing of booster
As improve the safety of electric heater, the service life of electric heater can be extended.
Wherein, in some embodiments of the invention, described pass through described n power according to described power distribution signals and select
Select the break-make that circuit controls corresponding described first power leg and the second power leg respectively, to select described n electricity respectively
The heating power of heat pipe, specifically includes: if the one of power selection circuitry in described n power selection circuitry receives
Heating with full power instructs, then pass through described power selection and control corresponding described second power leg to connect, and control described the
One power leg disconnects；Or if the one of power selection circuitry in described n power selection circuitry receives half work(
Rate heating instructions, then control corresponding described first power leg to connect by described power selection, and control corresponding described
Second power leg disconnects.
For reaching above-mentioned purpose, the heating power that another aspect of the invention embodiment proposes a kind of electric heater controls dress
Put.Described electric heater includes n electrothermal tube, and described heating power control device includes power selection button, controller and n
Power selection circuitry, wherein, described power selection button is used for receive user and instructs to generate power signal；Described controller with
Described power selection button and described n power selection circuitry are respectively connected with, and described controller generates according to described power signal
Power distribution signals, and described power distribution signals are sent to described n power selection circuitry；Described n power selection electricity
Road is corresponded with described n electrothermal tube, and each power selection circuitry includes half-wave rectification block and power selection module, its
In, the first outfan of described power selection module is connected with one end of described half-wave rectification block, described half-wave rectification block
The other end of one end and corresponding electrothermal tube connect, to constitute the first power leg；The second of described power selection module is defeated
Go out end to connect with the other end of corresponding electrothermal tube, to constitute the second power leg；Described power selection module is according to described work(
The break-make of rate distribution signal described first power leg of control and described second power leg is to select described corresponding electrothermal tube
Heating power.
The heating power control device of electric heater according to embodiments of the present invention, by corresponding with n electrothermal tube
N power selection circuitry, connecing of the first power leg or the second power leg can be controlled according to power distribution signals respectively
Logical, and then corresponding electrothermal tube is realized with half-power or flat-out distribution, such that it is able to provide more kinds of power combination species,
Can be more user-friendly with the function of improving product and adaptability.In addition, each electrothermal tube in n electrothermal tube
To realize half-power heating by half-wave rectification block, in the case of there is electrical power restriction, the adaptability of electric heater is more
By force.Additionally, when electrothermal tube is worked with half-power, its surface loading is also reduced to half during full power operation, now electrothermal tube
Surface temperature reduces, and such that it is able to reducing and delaying to produce high temperature incrustation scale, and then avoids electrothermal tube appearance because incrustation scale assembles
Now heat the phenomenon of booster, improve the safety of electric heater, the service life of electric heater can be extended.
Wherein, in some embodiments of the invention, described power selection module includes: relay unit, described relay
Device unit controls the connecting to select of described first power leg and described second power leg according to described power distribution signals
The heating power of described corresponding electrothermal tube.
For reaching above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of heating power controlling party of electric heater
Method, wherein, described electric heater includes n electrothermal tube, and described control method comprises the following steps: receive user selection instruction with
Generate power signal；Power distribution signals are generated according to described power signal, and described power distribution signals are sent to n work(
Rate selection circuit, wherein said n power selection circuitry is corresponded with described n electrothermal tube, described n power selection circuitry
Include the first power leg and the second power leg respectively, the first power leg includes half-wave rectification block；And according to described
Power distribution signals control corresponding described first power leg and the second power to prop up by described n power selection circuitry respectively
The break-make on road, to select the heating power of described n electrothermal tube respectively.
The heating power control method of electric heater according to embodiments of the present invention, by controlling with n electrothermal tube one by one
Corresponding n power selection circuitry selects the connection of the first power leg or the second power leg, and then to corresponding electrothermal tube
Realize half-power or flat-out distribution, such that it is able to provide more kinds of power combination species, more user-friendly.Separately
Outward, the first power leg is controlled to connect by n power selection circuitry, each electrothermal tube in n electrothermal tube all can be realized
Half-power heats, and exists in the case that electrical power limits so that the adaptability of electric heater is higher.Additionally, by controlling electricity
Heat pipe is worked with half-power, it is possible to reduce and delay to produce high temperature incrustation scale, and then avoid electrothermal tube appearance because incrustation scale assembles
Now heat the phenomenon of booster, improve the safety of electric heater, the service life of electric heater can be extended.
Wherein, in some embodiments of the invention, described pass through described n power according to described power distribution signals and select
Select the break-make that circuit controls corresponding described first power leg and the second power leg respectively, to select described n electricity respectively
The heating power of heat pipe, specifically includes: if the one of power selection circuitry in described n power selection circuitry receives
Heating with full power instructs, then control corresponding described second power leg to connect by described power selection, and control corresponding
Described first power leg disconnects；Or if the one of power selection circuitry in described n power selection circuitry receives
To half-power heating instructions, then control corresponding described first power leg to connect by described power selection, and control correspondence
Described second power leg disconnect.
The aspect that the present invention adds and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and easy to understand, wherein:
Fig. 1 is the schematic diagram of the electric heater according to one embodiment of the present of invention；
Fig. 2 is the block diagram of the electric heater according to an alternative embodiment of the invention；
Fig. 3 is the block diagram of the electric heater according to yet another embodiment of the present invention；
Fig. 4 is the flow chart of the control method of the electric heater according to one embodiment of the present of invention；
Fig. 5 is the block diagram of the heating power control device of the electric heater according to one embodiment of the present of invention；
Fig. 6 is the block diagram of the heating power control device of the electric heater according to an alternative embodiment of the invention；And
Fig. 7 is the flow chart of the heating power control method of the electric heater according to yet another embodiment of the present invention.
Reference
Electric heater 100, n electrothermal tube 10, temperature detector 20, heating power control device 30 and temperature controller 40, interior
Gallbladder 50, power selection button 301, controller 302 and n power selection circuitry 303, relay unit 30321, halfwave rectifier mould
Block 3031 and power selection module 3032.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the part and setting of specific examples is described.Certainly, they are only merely illustrative, and
Purpose does not lie in the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This heavy
It is for purposes of simplicity and clarity again, itself do not indicate the relation between discussed various embodiment and/or setting.This
Outward, the invention provides various specific technique and material example, but those of ordinary skill in the art can be appreciated that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
" on " structure can include the first and second features and be formed as the embodiment of directly contact it is also possible to include other feature shape
Become the embodiment between the first and second features, such first and second features may not be directly contact.
In describing the invention, it should be noted that unless otherwise prescribed and limit, term " installation ", " being connected ",
" connection " should be interpreted broadly, for example, it may be the connection of mechanical connection or electrical connection or two element internals, can
To be to be joined directly together it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
With reference to explained below and accompanying drawing it will be clear that these and other aspects of embodiments of the invention.In these descriptions
In accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, to represent the enforcement implementing the present invention
Some modes of the principle of example are but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes falling into all changes in the range of the spirit of attached claims and intension, modification and equivalent.
The electric heater that embodiment proposes according to an aspect of the present invention and its control method are described with reference to the accompanying drawings, with
And the heating power control device of electric heater and control method.
The electric heater first embodiment of the present invention being proposed illustrates.Fig. 1 is according to one embodiment of the present of invention
Electric heater basic structure schematic diagram, Fig. 2 is the block diagram of the electric heater according to an alternative embodiment of the invention.As figure
Shown in 1 and Fig. 2, the electric heater 100 of the embodiment of the present invention includes n electrothermal tube 10, temperature detector 20, and heating power controls
Device 30 and temperature controller 40.
Wherein, n electrothermal tube 10 can be 1 or multiple, can be configured as needed, for example Fig. 1 show
Two electrothermal tubes, one end of each electrothermal tube in n electrothermal tube 10 is all connected with one end of external power source, such as with alternating current
Zero line n connect.
Temperature detector 20 is used for detecting temperature, temperature detector 20 and the temperature control of water in the inner bag 50 of electric heater 100
Device 40 connects.Temperature detector 20 can be a temperature sensor, such as, shown in Fig. 1, electrothermal tube is passed through in temperature sensor
Blind pipe go deep in inner bag 50, or temperature detector 20 can also be multiple temperature sensors, and multiple temperature sensors are located at
The different position of inner bag 50.
Heating power control device 30 includes power selection button 301, controller 302 and n power selection circuitry 303.
Wherein, power selection button 301 is used for receive user instruction to generate power signal that is to say, that user passes through power selection
Button 301 selects the operating power of electric heater 100.Controller 302 and power selection button 301 and n power selection circuitry
303 are respectively connected with, and controller 302 generates power distribution signals according to power signal, and power distribution signals are sent to n work(
Rate selection circuit 301, that is, the power signal of electric heater 100 job demand that speech controller 302 selects according to user, sends work(
Rate distributes signal controlling which electrothermal tube in n electrothermal tube 10 opens, and the power of the electrothermal tube of unlatching.
N power selection circuitry 303 is corresponded with n electrothermal tube 10, and each power selection circuitry includes halfwave rectifier
Module 3031 and power selection module 3032.Wherein, the first outfan 1 of power selection module 3032 and half-wave rectification block
3031 one end connects, and the other end of half-wave rectification block 3031 is connected with the other end of corresponding electrothermal tube, to constitute first
Power leg.Second outfan 2 of power selection module 3032 is directly connected to the other end of corresponding electrothermal tube, to constitute
Two power leg.Power selection module 3032 controls the logical of the first power leg and the second power leg according to power distribution signals
The disconnected heating power with the corresponding electrothermal tube of selection.
Further, power selection module 3032 includes relay unit 30321, and relay unit 30321 is according to power
The heating power to select corresponding electrothermal tube for the break-make of distribution signal control the first power leg and the second power leg.
Specifically, the first power leg can be selected to connect or the second power leg by power selection module 3032
Connect.For example power selection module 3032 can arrange relay unit 30321, according to the power of the controller 302 receiving
The break-make of distribution signal control relay unit 30321, and then control the break-make of the first power leg or the second power leg, its
In, relay unit 30321 can be one or two.If power selection module 3032 controls the first power leg to connect,
Then input current such as civil power is after power selection module 3032, and then passes through half-wave rectification block 3031, because civil power
Sinusoidal ac, then after halfwave rectifier the power of electrothermal tube corresponding with this power selection circuitry be reduced to flat-out
Half is that is to say, that the first power leg connects the distribution that can realize the half-power to corresponding electrothermal tube.In addition, if
Power selection module 3032 selects the second power leg to connect according to power distribution signals, then input power such as mains supply can
Connected with directly electrothermal tube corresponding with this power selection circuitry, then can realize to this electrothermal tube full power allocation.
Put it briefly, the power selection of power selection button 301 receive user, the work(that controller 302 selects according to user
Rate signal, judges that the electrothermal tube in n electrothermal tube 10 needs how to carry out power distribution, in other words, for example controller 302 is sentenced
Which electrothermal tube in disconnected n electrothermal tube 10 needs to open, and judges the heating power of each electrothermal tube for example with half-power
Heating or heating with full power, generate power distribution signals, and power distribution signals are sent to n power selection circuitry 303,
And then n power selection circuitry 303, according to the power distribution signals receiving, controls the branch road of power selection circuitry to connect respectively
Logical, for example, wherein one road power selection circuitry 303 receives half-power heating signal, that is, control and this power selection circuitry pair
The electrothermal tube answered is heated with half-power, then this power selection circuitry controls its first power leg to connect.It is understood that
When n heating tube is multiple, each electrothermal tube has corresponding power selection circuitry, can carry out total power and half-power is divided
Join, realize the selection of the heating power of each electrothermal tube, thus n electrothermal tube 10 can be combined into different power species, structure
Become many power electric water heaters of more than many power.
Further, temperature controller 40 respectively with the input 3 of each power selection module of n power selection circuitry 303,
The other end of temperature detector 20 and external power source such as mains supply such as live wire l end connects, and temperature controller 40 is according to electric hot water
The break-make of the temperature control n electrothermal tube 10 of water in the inner bag 50 of device 100, so that n electrothermal tube 10 is respectively with corresponding heating
Power is heated, and controls energising and the power-off of electrothermal tube according to water temperature, that is, is heated or stopped heating.For example,
If the temperature of water is less than design temperature in the inner bag 50 of electric heater 100, temperature controller 40 connects external power source, and then n
The electrothermal tube being assigned to heating power in electrothermal tube 10 is heated with the heating power distributing, the temperature of water up in inner bag 50
Reach preset temperature, temperature controller 40 cut-out external power source is powered, and electric heater 100 quits work.
It is in safe consideration, above-mentioned electric heater 100 can also include plant-grid connection device 60, plant-grid connection device 60
First input end i1 be connected with one end such as zero line l of external power source such as mains supply, the of plant-grid connection device 60
Two input i2 are connected with the other end such as zero line side n of external power source, the first outfan o1 and n of plant-grid connection device 60
One end of each electrothermal tube of electrothermal tube 10 is respectively connected with, and the second outfan o2 of plant-grid connection device 60 is with temperature controller 40 even
Connect.
Illustrate that the mistake of power distribution realized by the electric heater 100 that the embodiment of the present invention proposes with a specific embodiment below
Journey.Fig. 3 is the block diagram of the electric heater of a specific embodiment according to the present invention.As shown in figure 3, electric hot water in this embodiment
Device 100 includes an electrothermal tube, similarly has power selection circuitry corresponding with electrothermal tube, is selected by power selection circuitry
First power leg and the second power leg realize distribution half-power and total power.Wherein, connecting the second power leg i.e. entirely
During power distribution, external power source such as mains supply pass through plant-grid connection device 60, temperature controller 40, power selection module 3032 with
Electrothermal tube is directly connected to.When connecting the first power leg is that half-power is distributed, external power source is through plant-grid connection device 60, temperature
Control device 40, power selection module 3032 and half-wave rectification block 3031 are connected with electrothermal tube, thus realizing half-power heating.Permissible
Find out, the electric heater 100 for single electrothermal tube can provide total power p and two kinds of heating powers of half-power 1/2p.
In addition, if n electrothermal tube 10 is multiple, then can realize more kinds of work(according to above-mentioned power distribution and selection
Rate combination variety.For example, when electric heater 100 is two electrothermal tubes, by each electrothermal tube corresponding power selection module
3032 and the control of half-wave rectification block 3031, electric heater can realize eight kinds of heating powers combinations, for example, include: single tube is complete
Power is heated to be pa (one of electrothermal tube independent heating with full power) and pb (the independent heating with full power of another electrothermal tube), single
Pipe half-power heats 1/2pa and 1/2pb, and the two equal heating with full power of pipe are pa+pb, and the two equal half-power heating of pipe are 1/2pa+1/
2pb, single tube total power and single tube half-power are 1/2pa+pb, 1/2pb+pa.By that analogy, electrothermal tube is tied for two or more
The electric heater 100 of structure, then by above-mentioned each electrothermal tube corresponding power selection module 3032 and half-wave rectification block
3031 control is it is provided that the heating power of such as more than eight kinds of more power combination species combines.
In sum, electric heater according to embodiments of the present invention, by n power one-to-one with n electrothermal tube
Selection circuit, can control the connection of the first power leg or the second power leg respectively according to power distribution signals, and then right
Corresponding electrothermal tube realizes half-power or flat-out distribution, such that it is able to provide more kinds of power combination species, can be lifted
The function of product and adaptability, more user-friendly, the structure of electrothermal tube need not be changed, the installation of electrothermal tube will not be increased
Intensity, will not increase cost, do not affect the production efficiency of the whole machine of electric heater.In addition, each electrothermal tube in n electrothermal tube is equal
Half-power heating can be realized by half-wave rectification block, in the case of there is electrical power restriction, the adaptability of electric heater
Higher.Additionally, when electrothermal tube is worked with half-power, its surface loading is also reduced to half during full power operation, now electrothermal tube
Surface temperature reduce, such that it is able to reduce and delay produce high temperature incrustation scale, and then avoid electrothermal tube appearance because incrustation scale assemble and
The phenomenon of heating booster occurs, improves the safety of electric heater, the service life of electric heater can be extended.
Based on the structure of above-mentioned electric heater, describe embodiment according to a further aspect in the invention with reference to the accompanying drawings and propose
A kind of electric heater control method.Wherein, electric heater includes n electrothermal tube and heating power control device, heats work(
Rate control device includes n power selection circuitry, and n power selection circuitry is corresponded with n electrothermal tube, n power selection
Circuit includes the first power leg and the second power leg respectively, and the first power leg includes half-wave rectification block.
Fig. 4 is the flow chart of the control method of the electric heater according to one embodiment of the present of invention.As shown in figure 4, this
The control method of the electric heater of inventive embodiments comprises the following steps:
S1, receive user selection instruction is to generate power signal.
Specifically, power signal can be generated that is to say, that user is led to by the instruction of power selection button receive user
Overpower selection key selects the operating power of electric heater.
S2, generates power distribution signals according to power signal, and power distribution signals are sent to n power selection electricity
Road.
Say the power signal of the electric heater job demand selecting according to user, send power distribution signals to control n
Which electrothermal tube in individual electrothermal tube is opened, and the power of the electrothermal tube opened.
S3, passes through n power selection circuitry according to power distribution signals and controls corresponding first power leg and the respectively
The break-make of two power leg, to select the heating power of n electrothermal tube respectively.
For example, n power selection circuitry can be selected by relay, and wherein, relay can be one or two
Individual.
Wherein, if first power leg connect, input current such as civil power through half-wave rectification block because civil power
Sinusoidal ac, then after halfwave rectifier the power of electrothermal tube corresponding with this power selection circuitry be reduced to flat-out
Half is that is to say, that the first power leg connects the distribution that can realize the half-power to corresponding electrothermal tube.In addition, if
The second power leg is selected to connect according to power distribution signals, then input power such as mains supply can directly be selected with this power
Select the connection of circuit corresponding electrothermal tube, then can realize to this electrothermal tube full power allocation.It is understood that heating at n
Manage for multiple when, each electrothermal tube has corresponding power selection circuitry, can carry out total power and half-power distribution, realize
The selection of the heating power of each electrothermal tube, thus n electrothermal tube can be combined into different power species, constitute many power with
On many power electric water heaters.
Specifically, if the one of power selection circuitry in n power selection circuitry receives heating with full power and refers to
Order, then control corresponding second power leg to connect by power selection circuitry, and controls corresponding first power leg to disconnect,
So that electrothermal tube corresponding with this power selection is heated with half-power.If one of in n power selection circuitry
Power selection circuitry receives half-power heating instructions, then control corresponding first power leg to connect by power selection circuitry
Logical, and control corresponding second power leg to disconnect so as to should power selection circuitry electrothermal tube carried out with total power plus
Heat.Thus realizing the selection to n electrothermal tube heating power and distribution.
S4, according to the break-make of the temperature control n electrothermal tube of water in inner container of electric water heater so that n electrothermal tube respectively with
Corresponding heating power is heated.
Pass through energising and power-off that temperature controller controls electrothermal tube according to water temperature, that is, heated or stopped heating.
For example, if the temperature of water is less than design temperature in the inner bag of electric heater, temperature controller connects external power source, and then n electricity
The electrothermal tube being assigned to heating power in heat pipe is heated with the heating power distributing, until inner bag in water temperature reach pre-
If temperature, temperature controller cut-out external power source is powered, and electric heater quits work.
The control method of electric heater according to embodiments of the present invention, by controlling n one-to-one with n electrothermal tube individual
Power selection circuitry selects the connection of the first power leg or the second power leg, and then realizes half-power to corresponding electrothermal tube
Or flat-out distribution, such that it is able to provide more kinds of power combination species, more user-friendly.In addition, passing through n work(
Rate selection circuit controls the first power leg to connect, and each electrothermal tube in n electrothermal tube all can realize half-power heating,
Exist in the case that electrical power limits so that the adaptability of electric heater is higher.Additionally, by controlling electrothermal tube with half-power work
Make, it is possible to reduce and delay to produce high temperature incrustation scale, and then avoid electrothermal tube appearance to occur because incrustation scale assembles heating showing of booster
As improve the safety of electric heater, the service life of electric heater can be extended.
In addition, the heating power control device of the electric heater to the embodiment of the present invention is said from another further aspect embodiment
Bright.Wherein, electric heater includes n electrothermal tube 10.
Fig. 5 is the block diagram of the heating power control device of the electric heater according to one embodiment of the present of invention, as Fig. 5 institute
Show, the heating power control device 30 of the embodiment of the present invention includes power selection button 301, controller 302 and n power selection
Circuit 303.Wherein, power selection button 301 is used for receive user instruction to generate power signal that is to say, that user passes through
Power selection button 301 selects the operating power of electric heater.Controller 302 and power selection button 301 and n power selection
Circuit 303 is respectively connected with, and controller 302 generates power distribution signals according to power signal, and power distribution signals are sent to n
Individual power selection circuitry 303, that is, the power signal of the electric heater job demand that speech controller 302 selects according to user, sends
Power distribution signals are controlling which electrothermal tube in n electrothermal tube 10 opens, and the power of the electrothermal tube opened.
N power selection circuitry 303 is corresponded with n electrothermal tube, and each power selection circuitry includes halfwave rectifier mould
Block 3031 and power selection module 3032.Wherein, the first outfan 1 of power selection module 3032 and half-wave rectification block 3031
One end connect, the other end connection of the other end of half-wave rectification block 3031 and corresponding electrothermal tube, to constitute the first power
Branch road.Second outfan 2 of power selection module 3032 is directly connected to the other end of corresponding electrothermal tube, to constitute the second work(
Rate branch road.Power selection module 3032 according to power distribution signals control the break-make of the first power leg and the second power leg with
Select the heating power of corresponding electrothermal tube.
Further, power selection module 3032 includes relay unit 30321, and relay unit 30321 is according to power
The heating power to select corresponding electrothermal tube for the break-make of distribution signal control the first power leg and the second power leg.
Specifically, the first power leg can be selected to connect or the second power leg by power selection module 3032
Connect.For example power selection module 3032 can arrange relay unit 30321, according to the power of the controller 302 receiving
The break-make of distribution signal control relay unit 30321, and then control the break-make of the first power leg or the second power leg, its
In, relay unit 30321 can be one or two.If power selection module 3032 controls the first power leg to connect,
Then input current such as civil power is after power selection module 3032, and then passes through half-wave rectification block 3031, because civil power
Sinusoidal ac, then after halfwave rectifier the power of electrothermal tube corresponding with this power selection circuitry be reduced to flat-out
Half is that is to say, that the first power leg connects the distribution that can realize the half-power to corresponding electrothermal tube.In addition, if
Power selection module 3032 selects the second power leg to connect according to power distribution signals, then input power such as mains supply can
Connected with directly electrothermal tube corresponding with this power selection circuitry, then can realize to this electrothermal tube full power allocation.
Put it briefly, the power selection of power selection button 301 receive user, the work(that controller 302 selects according to user
Rate signal, judges that the electrothermal tube in n electrothermal tube 10 needs how to carry out power distribution, in other words, for example controller 302 is sentenced
Which electrothermal tube in disconnected n electrothermal tube 10 needs to open, and judges the heating power of each electrothermal tube for example with half-power
Heating or heating with full power, generate power distribution signals, and power distribution signals are sent to n power selection circuitry 303,
And then n power selection circuitry 303, according to the power distribution signals receiving, controls the branch road of power selection circuitry to connect respectively
Logical, for example, wherein one road power selection circuitry 303 receives half-power heating signal, that is, control and this power selection circuitry pair
The electrothermal tube answered is heated with half-power, then this power selection circuitry controls its first power leg to connect.It is understood that
When n heating tube 10 is multiple, each electrothermal tube has corresponding power selection circuitry, can carry out total power and half-power
Distribution, realizes the selection of the heating power of each electrothermal tube, thus n electrothermal tube 10 can be combined into different power species,
Constitute many power electric water heaters of more than many power.
The heating power control device of the electric heater that the embodiment of the present invention proposes is described with a specific embodiment below
Work process.Fig. 6 is the block diagram of the heating power control device of the electric heater of a specific embodiment according to the present invention.
As shown in fig. 6, the electric heater in this embodiment includes an electrothermal tube, similarly there is power selection corresponding with electrothermal tube
Circuit, selects the first power leg and the second power leg to realize distribution half-power and total power by power selection circuitry.Its
In, when connection the second power leg is full power allocation, external power source such as mains supply passes through plant-grid connection device, temperature control
Device, power selection module 3032 are directly connected to electrothermal tube.When connecting the first power leg is that half-power is distributed, external power source
It is connected with electrothermal tube through plant-grid connection device, temperature controller, power selection module 3032 and half-wave rectification block 3031, thus real
Existing half-power heating.As can be seen that the electric heater for single electrothermal tube can provide total power p and two kinds of half-power 1/2p
Heating power.
In addition, if n electrothermal tube 10 is multiple, then control according to the heating power of the electric heater of the embodiment of the present invention
The power distribution of device 30 and selection can realize more kinds of power combination species.For example, when electric heater is two electrothermal tubes
When, by the control of each electrothermal tube corresponding power selection module 3032 and half-wave rectification block 3031, electric heater is permissible
Realize the combination of eight kinds of heating powers, for example, include: single tube heating with full power is that (the independent total power of one of electrothermal tube adds pa
Heat) and pb (the independent heating with full power of another electrothermal tube), single tube half-power heating 1/2pa and 1/2pb, the two equal total powers of pipe add
Heat is pa+pb, and two to manage equal half-power heating be 1/2pa+1/2pb, single tube total power and single tube half-power be 1/2pa+pb, 1/
2pb+pa.By that analogy, it is the electric heater of two or more structure for electrothermal tube, then pass through above-mentioned each electrothermal tube and correspond to
Power selection module 3032 and half-wave rectification block 3031 control it is provided that such as eight kinds of more power combination species with
On heating power combination.
In sum, the heating power control device of electric heater according to embodiments of the present invention, by with n electrothermal tube
One-to-one n power selection circuitry, can control the first power leg or the second power according to power distribution signals respectively
The connection of branch road, and then corresponding electrothermal tube is realized with half-power or flat-out distribution, such that it is able to provide more kinds of power
Combination variety, can be more user-friendly with the function of improving product and adaptability.In addition, each electricity in n electrothermal tube
Heat pipe all can realize half-power heating by half-wave rectification block, in the case of there is electrical power restriction, electric heater
Adaptability is higher.Additionally, when electrothermal tube is worked with half-power, its surface loading is also reduced to half during full power operation, now
The surface temperature of electrothermal tube reduces, and such that it is able to reducing and delaying to produce high temperature incrustation scale, and then avoids electrothermal tube appearance because of incrustation scale
Assemble and the phenomenon heating booster occurs, improve the safety of electric heater, the service life of electric heater can be extended.
Based on the heating power control device of above-mentioned electric heater, the another side according to the present invention is described with reference to the accompanying drawings
The heating power control method of the electric heater that face embodiment proposes.Wherein, electric heater includes n electrothermal tube.
Fig. 7 is the flow chart of the heating power control method of the electric heater according to one embodiment of the present of invention.As Fig. 7
Shown, control method comprises the following steps:
S10, receive user selection instruction is to generate power signal.
Specifically, power signal can be generated that is to say, that user is led to by the instruction of power selection button receive user
Overpower selection key selects the operating power of electric heater.
S20, generates power distribution signals according to power signal, and power distribution signals are sent to n power selection electricity
Road, wherein, n power selection circuitry is corresponded with n electrothermal tube, and n power selection circuitry includes the first power respectively and prop up
Road and the second power leg, the first power leg includes half-wave rectification block.
Say the power signal of the electric heater job demand selecting according to user, send power distribution signals to control n
Which electrothermal tube in individual electrothermal tube is opened, and the power of the electrothermal tube opened.
S30, passes through n power selection circuitry according to power distribution signals and controls corresponding first power leg and the respectively
The break-make of two power leg, to select the heating power of n electrothermal tube respectively.
For example, n power selection circuitry can be selected by relay, and wherein, relay can be one or two
Individual.
Wherein, if first power leg connect, input current such as civil power through half-wave rectification block because civil power
Sinusoidal ac, then after halfwave rectifier the power of electrothermal tube corresponding with this power selection circuitry be reduced to flat-out
Half is that is to say, that the first power leg connects the distribution that can realize the half-power to corresponding electrothermal tube.In addition, if
The second power leg is selected to connect according to power distribution signals, then input power such as mains supply can directly be selected with this power
Select the connection of circuit corresponding electrothermal tube, then can realize to this electrothermal tube full power allocation.It is understood that heating at n
Manage for multiple when, each electrothermal tube has corresponding power selection circuitry, can carry out total power and half-power distribution, realize
The selection of the heating power of each electrothermal tube, thus n electrothermal tube can be combined into different power species, constitute many power with
On many power electric water heaters.
Specifically, if the one of power selection circuitry in n power selection circuitry receives heating with full power and refers to
Order, then control corresponding second power leg to connect by power selection circuitry, and controls corresponding first power leg to disconnect,
So that electrothermal tube corresponding with this power selection is heated with half-power.If one of in n power selection circuitry
Power selection circuitry receives half-power heating instructions, then control corresponding first power leg to connect by power selection circuitry
Logical, and control corresponding second power leg to disconnect so as to should power selection circuitry electrothermal tube carried out with total power plus
Heat.Thus realizing the selection to n electrothermal tube heating power and distribution.
The heating power control method of electric heater according to embodiments of the present invention, by controlling with n electrothermal tube one by one
Corresponding n power selection circuitry selects the connection of the first power leg or the second power leg, and then to corresponding electrothermal tube
Realize half-power or flat-out distribution, such that it is able to provide more kinds of power combination species, more user-friendly.Separately
Outward, the first power leg is controlled to connect by n power selection circuitry, each electrothermal tube in n electrothermal tube all can be realized
Half-power heats, and exists in the case that electrical power limits so that the adaptability of electric heater is higher.Additionally, by controlling electricity
Heat pipe is worked with half-power, it is possible to reduce and delay to produce high temperature incrustation scale, and then avoid electrothermal tube appearance because incrustation scale assembles
Now heat the phenomenon of booster, improve the safety of electric heater, the service life of electric heater can be extended.
In flow chart or here any process described otherwise above or method description are construed as, represent and include
The module of the code of executable instruction of one or more steps for realizing specific logical function or process, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by substantially simultaneously in the way of or in the opposite order, carry out perform function, this should be by the present invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or here logic described otherwise above and/or step, for example, it is possible to be considered as to use
In the order list of the executable instruction realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (system as computer based system, including processor or other can hold from instruction
Row system, device or equipment instruction fetch the system of execute instruction) use, or with reference to these instruction execution systems, device or set
Standby and use.For the purpose of this specification, " computer-readable medium " can any can be comprised, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress using with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following: has the electricity of one or more wirings
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (ram), read only memory
(rom), erasable edit read-only storage (eprom or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (cdrom).In addition, computer-readable medium can even is that the paper that can print described program thereon or other are suitable
Medium, because edlin, interpretation or if necessary with it can then be entered for example by carrying out optical scanning to paper or other media
His suitable method is processed to electronically obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realizing.For example, if realized with hardware, and the same in another embodiment, can use well known in the art under
Any one of row technology or their combination are realizing: have the logic gates for data signal is realized with logic function
Discrete logic, there is the special IC of suitable combinational logic gate circuit, programmable gate array (pga), scene
Programmable gate array (fpga) etc..
Those skilled in the art are appreciated that to realize all or part step that above-described embodiment method carries
Suddenly the program that can be by completes come the hardware to instruct correlation, and described program can be stored in a kind of computer-readable storage medium
In matter, this program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, can be integrated in a processing module in each functional unit in each embodiment of the present invention it is also possible to
It is that unit is individually physically present it is also possible to two or more units are integrated in a module.Above-mentioned integrated mould
Block both can be to be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.Described integrated module is such as
Fruit using in the form of software function module realize and as independent production marketing or use when it is also possible to be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read only memory, disk or CD etc..
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention by claims and its equivalent limits.
Claims (9)
1. a kind of electric heater is it is characterised in that described electric heater includes n electrothermal tube, temperature detector, heating power control
Device processed and temperature controller, wherein,
One end of each electrothermal tube in described n electrothermal tube is all connected with one end of external power source；
Described temperature detector is used for detecting the temperature of water in described inner container of electric water heater, described temperature detector and described temperature control
Device connects；
Described heating power control device includes power selection button, controller and n power selection circuitry, wherein,
Described power selection button is used for receive user and instructs to generate power signal；
Described controller is respectively connected with described power selection button and described n power selection circuitry, described controller according to
Described power signal generates power distribution signals, and described power distribution signals are sent to described n power selection circuitry；
Described n power selection circuitry is corresponded with described n electrothermal tube, and each power selection circuitry includes halfwave rectifier mould
Block and power selection module, wherein,
First outfan of described power selection module is connected with one end of described half-wave rectification block, described half-wave rectification block
The other end of the other end and corresponding electrothermal tube connect, to constitute the first power leg；
Second outfan of described power selection module is connected with the other end of corresponding electrothermal tube, is propped up with constituting the second power
Road；
Described power selection module controls described first power leg and described second power to prop up according to described power distribution signals
The break-make on road is to select the heating power of described corresponding electrothermal tube；
Described temperature controller is examined with the input of each power selection module of described n power selection circuitry, described temperature respectively
Survey device and the other end of described external power source connects, described temperature controller is according to the temperature control institute of water in described inner container of electric water heater
State the break-make of n electrothermal tube so that described n electrothermal tube is heated with corresponding described heating power respectively.
2. electric heater as claimed in claim 1 is it is characterised in that described power selection module includes:
Relay unit, described relay unit controls described first power leg and described the according to described power distribution signals
The break-make of two power leg is to select the heating power of described corresponding electrothermal tube.
3. electric heater as claimed in claim 1 is it is characterised in that also include:
Plant-grid connection device, the first input end of described plant-grid connection device is connected with one end of described external power source, described electricity
Second input of source access device is connected with the other end of described external power source, the first outfan of described plant-grid connection device
Be respectively connected with one end of each electrothermal tube of described n electrothermal tube, the second outfan of described plant-grid connection device with described
Temperature controller connects.
4. a kind of control method of electric heater is it is characterised in that described electric heater includes n electrothermal tube and heating power control
Device processed, described heating power control device includes n power selection circuitry, described n power selection circuitry and described n electricity
Heat pipe corresponds, and described n power selection circuitry includes the first power leg and the second power leg, described first work(respectively
Rate branch road includes half-wave rectification block, and the control method of described electric heater comprises the following steps:
Receive user selection instruction is to generate power signal；
Power distribution signals are generated according to described power signal, and described power distribution signals are sent to described n power choosing
Select circuit；
According to described power distribution signals, corresponding described first power leg is controlled respectively by described n power selection circuitry
With the break-make of the second power leg, to select the heating power of described n electrothermal tube respectively；And
The break-make of n electrothermal tube according to the temperature control of water in described inner container of electric water heater, so that described n electrothermal tube divides
Do not heated with corresponding described heating power.
5. electric heater as claimed in claim 4 control method it is characterised in that described according to described power distribution signals
Control the break-make of corresponding described first power leg and the second power leg by described n power selection circuitry respectively, with
Select the heating power of described n electrothermal tube respectively, specifically include:
If the one of power selection circuitry in described n power selection circuitry receives heating with full power instruction, lead to
Crossing described power selection controls corresponding described second power leg to connect, and controls corresponding described first power leg to break
Open；Or
If the one of power selection circuitry in described n power selection circuitry receives half-power heating instructions, lead to
Crossing described power selection controls corresponding described first power leg to connect, and controls corresponding described second power leg to break
Open.
6. a kind of heating power control device of electric heater is it is characterised in that described electric heater includes n electrothermal tube, institute
State heating power control device and include power selection button, controller and n power selection circuitry, wherein,
Described power selection button is used for receive user and instructs to generate power signal；
Described controller is respectively connected with described power selection button and described n power selection circuitry, described controller according to
Described power signal generates power distribution signals, and described power distribution signals are sent to described n power selection circuitry；
Described n power selection circuitry is corresponded with described n electrothermal tube, and each power selection circuitry includes halfwave rectifier mould
Block and power selection module, wherein,
First outfan of described power selection module is connected with one end of described half-wave rectification block, described half-wave rectification block
The other end of one end and corresponding electrothermal tube connect, to constitute the first power leg；
Second outfan of described power selection module is connected with the other end of corresponding electrothermal tube, is propped up with constituting the second power
Road；
Described power selection module controls described first power leg and described second power to prop up according to described power distribution signals
The break-make on road is to select the heating power of described corresponding electrothermal tube.
7. the heating power control device of electric heater as claimed in claim 6 is it is characterised in that described power selection module
Including:
Relay unit, described relay unit controls described first power leg and described the according to described power distribution signals
The heating power to select described corresponding electrothermal tube for the connection of two power leg.
8. a kind of heating power control method of electric heater is it is characterised in that described electric heater includes n electrothermal tube, institute
State control method to comprise the following steps:
Receive user selection instruction is to generate power signal；
Power distribution signals are generated according to described power signal, and described power distribution signals are sent to n power selection electricity
Road, wherein, described n power selection circuitry is corresponded with described n electrothermal tube, and described n power selection circuitry wraps respectively
Include the first power leg and the second power leg, described first power leg includes half-wave rectification block；And
According to described power distribution signals, corresponding described first power leg is controlled respectively by described n power selection circuitry
With the break-make of the second power leg, to select the heating power of described n electrothermal tube respectively.
9. electric heater as claimed in claim 8 heating power control method it is characterised in that described according to described power
Distribution signal controls corresponding described first power leg and the second power leg respectively by described n power selection circuitry
Break-make, to select the heating power of described n electrothermal tube respectively, specifically includes:
If the one of power selection circuitry in described n power selection circuitry receives heating with full power instruction, lead to
Crossing described power selection controls corresponding described second power leg to connect, and controls corresponding described first power leg to break
Open；Or
If the one of power selection circuitry in described n power selection circuitry receives half-power heating instructions, lead to
Crossing described power selection controls corresponding described first power leg to connect, and controls corresponding described second power leg to break
Open.
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| CN201410242914.9A CN104110867B (en) | 2014-06-03 | 2014-06-03 | Electric water heater, control method of electric water heater and heating power controlling device and method |
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| CN1945155A (en) * | 2006-10-17 | 2007-04-11 | 邵凯 | Step heating volume-variable electric heating water heater |
| CN201014710Y (en) * | 2007-01-19 | 2008-01-30 | 王容生 | Intelligent varactor, variate, rapid heating energy-saving electric water heater |
| CN101446447A (en) * | 2007-11-27 | 2009-06-03 | 博西华电器（江苏）有限公司 | Electric water heater and heating method thereof |
| CN100589670C (en) * | 2003-02-19 | 2010-02-10 | 艾普克姆公司 | Water heater and method of operating the same |
| CN203893430U (en) * | 2014-06-03 | 2014-10-22 | 芜湖美的厨卫电器制造有限公司 | Electric water heater and heating power control device |
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| US8867906B2 (en) * | 2008-11-07 | 2014-10-21 | General Electric Company | Dry fire protection system |
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| CN100589670C (en) * | 2003-02-19 | 2010-02-10 | 艾普克姆公司 | Water heater and method of operating the same |
| CN1945155A (en) * | 2006-10-17 | 2007-04-11 | 邵凯 | Step heating volume-variable electric heating water heater |
| CN201014710Y (en) * | 2007-01-19 | 2008-01-30 | 王容生 | Intelligent varactor, variate, rapid heating energy-saving electric water heater |
| CN101446447A (en) * | 2007-11-27 | 2009-06-03 | 博西华电器（江苏）有限公司 | Electric water heater and heating method thereof |
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Effective date of registration: 20230307 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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