CN101788189A - Electric water heater capable of setting bather number and control method thereof - Google Patents

Electric water heater capable of setting bather number and control method thereof Download PDF

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Publication number
CN101788189A
CN101788189A CN200910014055A CN200910014055A CN101788189A CN 101788189 A CN101788189 A CN 101788189A CN 200910014055 A CN200910014055 A CN 200910014055A CN 200910014055 A CN200910014055 A CN 200910014055A CN 101788189 A CN101788189 A CN 101788189A
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temperature
heating
bather number
electric heater
bather
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CN200910014055A
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CN101788189B (en
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孙京岩
王任华
张伟
陈小雷
赵小勇
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Haier Group Corp
Wuhan Haier Water Heater Co Ltd
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Haier Group Corp
Wuhan Haier Water Heater Co Ltd
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Abstract

The invention discloses an electric water heater capable of setting bather number and a control method thereof. The electric water heater comprises a shell, a liner, a heating tube, a water temperature sensor and a controller, bather number setting keys are arranged on a control panel on the shell, the control panel and the controller are formed into a control circuit, and during operation, the controller acquires a corresponding control signal generated by the set bather number information, and then controls the heating tube to heat the water in the liner to a temperature set by the setting key. The electric water heater can automatically control the heating tube to heat the water in the liner to a temperature needed by users according to the bather number set by users in order to provide actually needed hot water quantity for users, consequently, the electric water heater effectively avoids the problems of the conventional temperature setting method, such as blindness and frequent hot water insufficiency or waste, the requirements of users are satisfied, energy is saved, and the overall performance and quality of the electric water heater is remarkably enhanced.

Description

A kind of electric heater and control method thereof that bather number is set
Technical field
The invention belongs to technical field of water heaters, specifically, relate to a kind of intelligent electric water heater and the intelligence control method thereof that can control automatically the heating-up temperature of water in the inner bag according to bather number.
Background technology
The mode of manually setting heating-up temperature that existing electric heater adopts usually satisfies Various Seasonal varying number user's water demand, and promptly existing temperature setting means needs the user to estimate the heating-up temperature that needs are set according to the number of bathing, the temperature of environment.This uses for the initial stage and is difficult to estimate suitable design temperature the user of water heater, the not enough or hot water residue of hot water occurs through regular meeting and too much causes problems such as energy waste.
Based on this, how to design and a kind ofly can control the intelligence controlling device that water heater is heated to required hot water amount automatically according to bather number and environment temperature, be subject matter to be solved by this invention.
Summary of the invention
The present invention can only control the heating power of heater in its inner bag or/and the time according to the heating-up temperature that the user sets in order to solve existing electric heater, to obtain required hot water amount, thereby the problem that hot water is not enough or waste appears easily, a kind of electric heater of realizing Based Intelligent Control is provided, has only needed the user to set bather number and just can calculate suitable heating-up temperature automatically.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of electric heater that bather number is set comprises shell, inner bag, heating tube, cooling-water temperature sensor and controller, control panel on the described shell is provided with the bather number setting key, constitute control loop with described controller, during work, the configuration information that controller is gathered bather number generates control signal corresponding, and then the control heating tube is heated to the water in the inner bag and the corresponding temperature of setting key.
Further, this electric heater also comprises environment temperature sensor, constitutes signal transmission loop with controller.In described controller, store the table of comparisons of environment temperature, bather number and heating-up temperature, described controller is searched the described table of comparisons according to the bather number configuration information and the environment temperature that receive, and then definite suitable heating-up temperature, and according to described heating-up temperature generation control signal corresponding, so that heating tube is controlled.
Further again, in the inner bag of described electric heater, be provided with cooling-water temperature sensor, detect the temperature of water in the inner bag and feed back to described controller; Described controller generates control signal corresponding according to heating-up temperature and inner bag water temperature, with the heating power and/or the time of control heating tube.
Wherein, described controller adopts pid algorithm to calculate the heating power of heating tube according to heating-up temperature and inner bag water temperature, to reach the purpose of Fast Heating.
Further again, described electric heater has bather number and sets panel, and this bather number setting panel is provided with and is used to set the button of bather number and the display screen of display setting information; Certainly, also can set on the panel touch-screen is set, set and the demonstration bather number at described bather number.
Further, described environment temperature sensor is arranged on the shell body of electric heater, and top, bottom or the left and right sides etc. that preferably are arranged on shell body do not influence complete machine position attractive in appearance.
Based on above-mentioned electric heater structure, the present invention provides a kind of control method that the electric heater of bather number is set simultaneously, may further comprise the steps:
A, collection bather number configuration information;
B, controller generate control signal corresponding in conjunction with environment temperature that collects and bather number configuration information, and then the heating tube of control electric heater is heated to suitable temperature with the water in the inner bag.
Further, this control method also comprises the step of gathering environment temperature.Wherein, described controller can be according to the table of comparisons of environment temperature, bather number and the heating-up temperature of its storage inside, determine suitable heating-up temperature by the method for tabling look-up, and then come heating tube is controlled according to described heating-up temperature generation control signal corresponding.Certainly, also can adopt the method for mathematical modeling to generate specific computing formula, and then calculate required heating-up temperature in conjunction with the ambient temperature value and the bather number configuration information that collect, with the control heating tube water in the inner bag is heated to described heating-up temperature.
Further again, described controller adopts the PID scheduling algorithm to calculate the heating power of heating tube according to heating-up temperature and the inner bag water temperature that collects, and then generates the heating of control signal corresponding control heating tube.Certainly, also can control heating tube and heat with fixing heating power, when the water in the inner container of electric water heater was heated to described heating-up temperature, the control heating tube stopped heating.
Compared with prior art, advantage of the present invention and good effect are: electric heater of the present invention can be controlled heating tube automatically according to the bather number that the user sets the water in the inner bag is heated to the required temperature of user, so that actual required hot water amount to be provided to the user, and then effectively avoided the existing blindness of conventional temperature establishing method and the hot water that often causes is not enough or problem such as waste, not only satisfied user's user demand, and saved the energy, thereby significantly promoted the complete machine performance quality of electric heater, strengthened the ability of its market competition.
After reading the detailed description of embodiment of the present invention in conjunction with the accompanying drawings, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of external structure of the electric heater of be provided with bather number proposed by the invention;
Fig. 2 is the theory diagram of a kind of embodiment of electric heater internal circuit shown in Figure 1;
Fig. 3 is the program flow chart of the control method of electric heater proposed by the invention.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in detail.
Electric heater of the present invention provides the interactive operation panel that is used to set bather number for the user, by gathering the configuration information that the user keys in, and relevant information such as combining environmental temperature, can calculate suitable heating-up temperature automatically, and then the generation control signal corresponding, heat with the heating tube of reasonably controlling in the inner container of electric water heater, thereby can obtain the required hot water amount of user automatically, and control water heater and finish heating process, realized the intellectuality control of electric heater.
Elaborate described concrete composition structure and the operation principle that the electric heater of bather number is set below by a specific embodiment.
Embodiment one, referring to shown in Figure 1, in the present embodiment, bather number is set on the housing that panel is arranged on electric heater, and on procapsid 1, what perhaps procapsid 1 bottom independently was provided with controls on the platform 2, as shown in Figure 1, be advisable to make things convenient for user's trigger action in its concrete installation site.
In described bather number setting panel, can specifically comprise and be used to set the button 3 of bather number and the display screen 4 of display setting information.When the user need heat the water in the water heater liner, import the number that needs bathing by triggering button 3.Display screen 4 shows response message in real time in user's operating process, finish assignment procedure with guides user.
As another embodiment, described bather number is set panel and also can be adopted a touch-screen to realize (not shown), to improve the aesthetic property of water heater complete machine outward appearance.The user is by clicking the setting menu that this touch-screen can access bather number, to finish the number setting operation.
Described bather number is set panel for the electric heater that is not equipped with at present control panel, needs independently to set up; And disposed the electric heater of control panel for those, can directly utilize existing control panel to come compatibility to finish the set-up function of bather number, the temperature set-up function that perhaps directly will have control panel now is revised as the bather number set-up function and gets final product, to simplify the design of control panel, economize on hardware cost.
Certainly, described bather number is set panel also can adopt other multiple design forms realizations, and present embodiment is not limited thereto.
The setting number is actually the supply of setting hot water in a period of time.The factors such as heating power, accuracy of temperature control (precision of temperature sensor) and environment temperature of the available capacity of the supply of hot water and water heater, temperature setting height, heating tube are closely related in a period of time.Wherein the variation of any one value all can make the hot water supply change.For the electric heater of a moulding, the available capacity of water heater, accuracy of temperature control are determined, only need to determine that according to sample temperature desired temperature (being heating-up temperature) and heating power and/or time get final product.
Present embodiment is provided with environment temperature sensor 6 and inner bag cooling-water temperature sensor on electric heater.Wherein, described environment temperature sensor 6 can be arranged on the shell body of electric heater, be used for the residing environment temperature of electric heater is detected in real time, top, bottom or the both sides etc. that preferably are arranged on the electric heater shell body do not influence the hidden place of electric heater overall appearance, as shown in Figure 1, can be arranged on the centre position of the left side housing 5 of electric heater.Can tentatively judge present located season by the testing environment temperature, if temperature higher summer, the required hot water amount of user is less relatively, therefore should select lower heating-up temperature; If cold winter, the required hot water amount of user is more relatively, therefore should select sufficiently high heating-up temperature, has enough hot water to use to guarantee the user.Certainly, for the electric heater that is connected with line control machine on those power lines, described environment temperature sensor 6 also can be arranged on the described line control machine, and is not shown, can reach the purpose of design of real-time testing environment temperature equally.The inner bag cooling-water temperature sensor is arranged in the inner bag of electric heater, is used for detecting the temperature of inner bag water, with real-time feedback water temperature information, and then judges whether the water in the inner bag is heated to the heating-up temperature of setting.
Fig. 2 is the internal circuit theory diagram of above-mentioned electric heater.After the temperature information that collects by environment temperature sensor and inner bag cooling-water temperature sensor is converted to the detection signal of a definite form, exports controller to and handle.Described detection signal can be an analog signal, such as analog voltage signal or analog current signal, exports controller to and carry out digitized processing after analog-digital converter converts data signal to; Perhaps, the analog detection signal that generates directly can be exported to the input end of analog signal of described controller, after the analog-digital converter conversion of via controller inside generates data signal, carry out digitized processing again.Certainly, described detection signal also can be a data signal, directly exports to carry out digitized processing in the controller.
In the present embodiment, described controller can adopt original chip microcontroller in the electric heater.
When the user used electric heater, operation control panel input bather number was such as people's bathing, two people's bathings, three people's bathings or the like.Controller receives identification to the user's trigger message that collects, and then definite bather number.Meanwhile, controller receives the environment temperature detection signal from environment temperature sensor output, judge current season according to the detection signal that receives, such as spring and autumn, summer or winter, and in conjunction with the table of comparisons of the bather number of setting by environment temperature, bather number and the heating-up temperature of its storage inside, as shown in table 1, with capacity is that 30 liters electric heater is an example, obtain required heating-up temperature by the mode of tabling look-up, and then according to described heating-up temperature generation control signal corresponding, the heating tube in the control inner bag heats.
Figure G2009100140557D0000061
Table 1
In the process that controller is controlled heating tube, controller detects the temperature of water in the inner bag in real time by the inner bag cooling-water temperature sensor.In order to be heated rapidly to the heating-up temperature of setting, described controller can adopt traditional pid algorithm, with the heating-up temperature set as input value, with the water temperature value in the inner bag as value of feedback, adopt negative feedback mode to calculate the heating power of heating tube, and then generate control signal corresponding according to this heating power and export the control circuit that connects heating tube to, with the heating power of control heating tube.So, when the water temperature in the inner bag during far below the heating-up temperature set, controller control heating tube to improve water temperature as early as possible, shortens heat time heating time with higher heating power operation.When the water temperature in the inner bag moved closer to the heating-up temperature of setting, controller control heating tube was with lower heating power operation, thereby made water temperature in the inner bag be heated to the heating-up temperature of setting gradually, to realize accurate temperature controlling.When the water temperature in the inner bag arrived design temperature, controller stopped heating according to the detection signal control heating tube that the inner bag cooling-water temperature sensor feeds back.
Certainly, also can control heating tube and heat, when the water in the inner container of electric water heater is heated to the heating-up temperature of setting, stop heating by controller control heating tube with fixing heating power.
As another embodiment, also can adopt according to the heating-up temperature of setting and determine that the mode of the heat time heating time of heating tube controls the heating tube operation.The method need not to gather the detection signal of inner bag water temperature, and get final product the heat time heating time that only needs the control heating tube to set with certain heating power operation.Obvious this control method implements relatively easily, but for the accuracy of temperature control far away from above-mentioned dual mode.
In addition, in other embodiments, also can not adopt environment temperature sensor, only the bather number configuration information of setting according to the user produces required heating-up temperature.
Fig. 3 is the FB(flow block) of electric heater intelligence control method, calls execution by controller, specifically may further comprise the steps:
S301, program begin, initialization, define each variable and compose initial value;
S302, read the environment temperature of environment temperature sensor collection input;
S303, read the bather number configuration information of user input;
Environment temperature and bather number configuration information that S304, combination are read are searched the table of comparisons of environment temperature, bather number and heating-up temperature, and be as shown in table 1, to determine required heating-up temperature;
S305, read the inner bag water temperature signal of inner bag cooling-water temperature sensor feedback;
S306, judge whether the inner bag water temperature arrives the heating-up temperature of setting, if, execution in step S308 then; Otherwise, carry out subsequent step;
S307, control heating tube return step S305 with fixing heating power operation;
S308, control heating tube stop heating;
S309, EP (end of program).
Certainly, also can adopt the method for mathematical modeling to generate specific computing formula for the calculating of heating-up temperature, and then calculate required heating-up temperature in conjunction with the environment temperature and the bather number configuration information that collect, the water in the inner bag is heated to the heating-up temperature of setting with the control heating tube.
Electric heater of the present invention only needs the user to set bather number, just can calculate suitable heating-up temperature automatically, thereby has greatly made things convenient for user's daily use, has improved the intelligent level of electric heater product.
Certainly; the above only is a kind of preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (13)

1. the electric heater that bather number can be set comprises shell, inner bag, heating tube, cooling-water temperature sensor and controller, it is characterized in that: the control panel on the described shell is provided with the bather number setting key, constitutes control loop with described controller;
During work, the configuration information that controller is gathered bather number generates control signal corresponding, and then the control heating tube is heated to the water in the inner bag and the corresponding temperature of setting key.
2. the electric heater that bather number is set according to claim 1 is characterized in that: also comprise environment temperature sensor, constitute signal transmission loop with controller.
3. the electric heater that bather number is set according to claim 2, it is characterized in that: the table of comparisons that in described controller, stores environment temperature, bather number and heating-up temperature, described controller is searched the described table of comparisons according to the bather number configuration information and the environment temperature that receive, and then definite suitable heating-up temperature, and according to described heating-up temperature generation control signal corresponding, so that heating tube is controlled.
4. the electric heater that bather number is set according to claim 2, it is characterized in that: described controller is gathered the configuration information of bather number and the environment temperature that environment temperature sensor collects, generate control signal corresponding, with the heating power of control heating tube or/and the time.
5. the electric heater that bather number is set according to claim 4 is characterized in that: described controller adopts pid algorithm to calculate the heating power of heating tube according to heating-up temperature and inner bag water temperature.
6. according to each described electric heater that bather number is set in the claim 2 to 5, it is characterized in that: described environment temperature sensor is arranged on the shell body of electric heater.
7. according to each described electric heater that bather number is set in the claim 1 to 5, it is characterized in that: described bather number setting key is the touch-screen that is used to set the button of bather number or is used to set bather number.
8. control method that the electric heater of bather number can be set may further comprise the steps:
A, collection bather number configuration information;
B, controller generate control signal corresponding in conjunction with the bather number configuration information that collects, and then the heating tube of control electric heater is heated to suitable temperature with the water in the inner bag.
9. the control method of electric heater according to claim 8 is characterized in that also comprising step:
Gather ambient temperature information;
Controller generates control signal corresponding in conjunction with bather number configuration information that collects and ambient temperature information.
10. the control method that the electric heater of bather number is set according to claim 9, it is characterized in that: the table of comparisons that in described controller, stores environment temperature, bather number and heating-up temperature, described controller is searched the described table of comparisons according to the bather number configuration information and the ambient temperature information that receive, and then definite suitable heating-up temperature, and according to described heating-up temperature generation control signal corresponding, so that heating tube is controlled.
11. the control method that the electric heater of bather number is set according to claim 9, it is characterized in that: described controller calculates definite suitable heating-up temperature according to bather number configuration information that receives and ambient temperature information, and according to described heating-up temperature generation control signal corresponding, so that heating tube is controlled.
12. the control method that the electric heater of bather number is set according to claim 11 is characterized in that also comprising step:
Gather inner bag water temperature information, described controller generates control signal corresponding according to heating-up temperature and the inner bag water temperature information that collects, with the heating power of control heating tube or/and the time.
13. the control method that the electric heater of bather number is set according to claim 12 is characterized in that: described controller adopts pid algorithm to calculate the heating power of heating tube according to heating-up temperature and inner bag water temperature information.
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