CN100363692C - Electric water heater - Google Patents
Electric water heater Download PDFInfo
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- CN100363692C CN100363692C CNB2005100434317A CN200510043431A CN100363692C CN 100363692 C CN100363692 C CN 100363692C CN B2005100434317 A CNB2005100434317 A CN B2005100434317A CN 200510043431 A CN200510043431 A CN 200510043431A CN 100363692 C CN100363692 C CN 100363692C
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- electric heating
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Abstract
The present invention discloses an electric water heater which comprises an electric heating film heating body, a water flow path, a manual throttle valve and a water flow sensor, wherein the electric heating film heating body can heat water flow by infrared rays and the water flow flows across the inner cavity of the electric heating film heating body; the liquid of the electric heating film heating body is sealed into and is connected in series with the water flow path; one end of the water flow path is communicated with a running water pipe network and the other end is communicated with a sprayer; the manual throttle valve is connected in series with the water flow sensor in the water flow path and the water flow sensor can control the electric heating film heating body to obtain electricity through a CPU of a programmable controller. The CPU is connected with an environment temperature detecting device, a water inlet temperature detecting device, a water outlet temperature detecting device and a power controller. The present invention has the advantages of complete water-electricity separation, high safety, easy heating and no need for a water storage tank. The CPU controls the heated power of the electric heating film rapid heating body through controlling a flow angle of a bidirectional triode thyristor. When the electric water heater is used, water outlet volume can be once set through the manual throttle valve and water outlet temperature can be automatically controlled within the range of set temperature so that the electric water heater has the advantage of convenient use.
Description
Technical field
The present invention relates to a kind of electric heater.
Background technology
Known electric heater generally is that the heating wire calandria is placed in the storage tank, sets heating-up temperature by variable range controller; When actual temperature reaches design temperature, the outage of heating wire calandria; When being lower than design temperature, the heating wire calandria gets electrical heating again.Its shortcoming is: 1) water power can not be isolated fully, and is dangerous; 2) need storage tank, if the energising insulation will expend a large amount of electric energy; If switch on heating when using again, wait the long period; 3) along with the minimizing of hot water in the storage tank, the leaving water temperature instability needs constantly to regulate and mixes water valve, uses inconvenient.
Summary of the invention
Technical problem to be solved by this invention is: a kind of electric heater safe in utilization is provided, isolates fully by simple structure realization water power, and water-saving and electricity-saving.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of electric heater, comprise the electric heating membrane calandria that can carry out infrared heating to the current of its inner chamber of flowing through, this electric heating membrane calandria liquid sealing is serially connected with in the water-flowing path, this water-flowing path one end is communicated with the running water pipe network, the other end is communicated with spray equipment, is connected in series manual throttle valve in the described water-flowing path and can gets electric water flow sensing unit by the CPU control electric heating membrane calandria of Programmable Logic Controller.
Described electric heating membrane calandria can be realized by following concrete structure: comprise several electrothermal tubes, its end forms a total water inlet and a total delivery port by communicating pipe pipeline series connection; The outer peripheral face of described electrothermal tube is coated with the Electric radiant Heating Film that can carry out infrared heating to the current of its inner chamber of flowing through.
Owing to adopted technique scheme, during use, connect power supply, open manual throttle valve and be adjusted to suitable water yield position, at this moment running water ingoing stream passage.When water flow sensing unit detects current and hydraulic signal, send instruction by CPU, it is electric that electric heating membrane calandria is got, and the current of its inner chamber of flowing through are carried out infrared heating.Water power separates fully, and is safe in utilization; The water flowing energising, promptly logical instant heating need not storage tank, water-saving and electricity-saving.
As a kind of improvement, but the input pin of described CPU connect respectively the testing environment temperature the environment temperature sniffer, can detect the inflow temperature sniffer of inflow temperature and can detect the leaving water temperature sniffer of coolant-temperature gage, the output pin of described CPU connects can control the output control device that electric heating membrane calandria is subjected to thermal power.
Described output control device comprises bidirectional thyristor, can control the photoelectrical coupler of its break-make and the RC branch road in parallel with photoelectrical coupler; Described bidirectional thyristor is connected with electric heating membrane calandria, and described photoelectrical coupler is connected with the output pin of CPU.
Environment temperature sniffer, inflow temperature sniffer and leaving water temperature sniffer are with detected temperature value input CPU, and CPU according to circumstances sends instruction to output control device with it and after setting value relatively, regulates the thermal power that is subjected to of electric heating membrane calandria.CPU controls the terminal voltage of Electric radiant Heating Film Fast Heating body by the angle of flow of control bidirectional thyristor.When the temperature difference was big, its terminal voltage raise, and the thermal power that is subjected to of electric heating membrane calandria raises, and leaving water temperature raises; Otherwise when the temperature difference reduced, the terminal voltage of electric heating membrane calandria also reduced, and it is descended by thermal power, and leaving water temperature also reduces.During use, only need once to set water yield by manual throttle valve, its leaving water temperature will be controlled within the scope of design temperature automatically, and is easy to use.
As further improvement, the input pin of described CPU connects the electric leakage sniffer that can detect electrical leakage voltage in the water-flowing path, and this electric leakage sniffer connects electric leakage alarm device, and serial connection is subjected to the magnetic valve of CPU control in the described water-flowing path.
The input pin of described CPU connects the electric heating membrane calandria overheat detection device that can prevent the electric heating membrane calandria burning, and its output pin connects the electric heating membrane calandria temperature alarm.
When the electric leakage sniffer detects when in the water-flowing path electrical leakage voltage being arranged, when the electric leakage alarm device buzzing is reported to the police, pass the signal to CPU, CPU sends instruction to magnetic valve immediately current is cut off, and sends the dump of instruction with electric heating membrane calandria to output control device; Equally, when the surface temperature that electric heating membrane calandria overheat detection device detects electric heating membrane calandria surpasses setting, pass the signal to CPU, CPU sends instruction to magnetic valve immediately current is cut off, send the dump of instruction to output control device, and report to the police by the buzzing of electric heating membrane calandria temperature alarm with electric heating membrane calandria.Above-mentioned improvement has further improved safety in utilization.
Improve as another kind, but described CPU connects the display unit and the parameter set unit that can set out coolant-temperature gage of displays temperature respectively.Environment temperature, inflow temperature and leaving water temperature are presented on the LCDs of display unit respectively by display unit; By parameter set unit, the user can set out coolant-temperature gage as required.Said structure provides convenience for user's use.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the frame for movement schematic diagram of the embodiment of the invention;
Fig. 2 is a circuit block diagram embodiment illustrated in fig. 1;
Fig. 3 is the circuit theory diagrams of output control device among Fig. 2;
Fig. 4 is circuit theory diagrams embodiment illustrated in fig. 1.
The specific embodiment
A kind of electric heater, as shown in Figure 1, the electric heating membrane calandria 4 that can carry out infrared heating that comprises three groups of pipeline polyphones to the current of its inner chamber of flowing through, these electric heating membrane calandria 4 liquid sealings are serially connected with in the water-flowing path, this water-flowing path one end is communicated with the running water pipe network, the other end is communicated with spray equipment, serial connection manual throttle valve 17 in the described water-flowing path, current magnetizer 2 and can control electric heating membrane calandria 4 electric water flow sensing unit 1, in order to improve safety coefficient, water flow sensing unit 1 is made as two, lays respectively at water inlet end and the water side and the electric output pin that is series at CPU6 of water-flowing path.
Electric heating membrane calandria 4 comprises three, and its end is by communicating pipes 41 pipeline series connection, and form a total water inlet and a total delivery port: the outer peripheral face of described electrothermal tube 42 is coated with the Electric radiant Heating Film that can carry out infrared heating to the current of its inner chamber of flowing through.Certainly, electrothermal tube 42 is not limited to three, and electric heating membrane calandria 4 also is not limited to three, rationally selects for use according to water consumption and power demand.
Shown in Fig. 2 and Fig. 4 are common, but the input pin of CPU6 connect respectively the testing environment temperature environment temperature sniffer 10, can detect the inflow temperature sniffer 11 of inflow temperature and can detect the leaving water temperature sniffer 12 of coolant-temperature gage, it comprises a temperature sensor respectively.The output pin of CPU6 connects can control the output control device 7 that electric heating membrane calandria is subjected to thermal power.The input pin of CPU6 connects the electric leakage sniffer 14 that can detect electrical leakage voltage in the water-flowing path, and this electric leakage sniffer connects electric leakage alarm device 15, and serial connection is subjected to the magnetic valve 5 of CPU control in the described water-flowing path.The input pin of CPU6 also connects the electric heating membrane calandria overheat detection device 13 that can prevent the electric heating membrane calandria burning, and its output pin connects electric heating membrane calandria temperature alarm 16.In addition, but CPU6 connect the display unit 8 of displays temperature respectively and can set out the parameter set unit 9 of coolant-temperature gage.Display unit 8 comprises LCDs, can show 40 ℃ ± 1 ℃ (CPU acquiescence), 38 ℃ ± 1 ℃ (warm), 36 ℃ ± 1 ℃ (Wen Liang), 42 ℃ ± 1 ℃ (hot water), 25 ℃ ± 1 ℃ contents such as (washings).
As shown in Figure 3, output control device 7 comprises bidirectional thyristor T2, can control the photoelectrical coupler 71 and the RC branch road in parallel with photoelectrical coupler 71 of its break-make; Photoelectrical coupler comprises that a forward is arranged at the photodiode GD between CPU6 and the ground, a bidirectional thyristor T1 who is connected with the gate pole of bidirectional thyristor T2.Bidirectional thyristor T2 connects with electric heating membrane calandria 4.The effect of RC branch road is to prevent that control device 7 is subjected to the interference of external electromagnetic ripple, sound wave etc.
After the start, Programmable Logic Controller is in default conditions automatically: magnetic valve 5 is open-minded, 40 ℃ ± 1 ℃ of water outlet design temperature.Open manual throttle valve 17 and be adjusted to suitable water yield position, at this moment running water ingoing stream passage.When water flow sensing unit 1 detects current and hydraulic signal, send instruction by CPU, make electric heating membrane calandria 4 electric, the current of its inner chamber of flowing through are carried out infrared heating.CPU shows that through LCD each detects data by cycle detection environment temperature, cold water temperature, hot water temperature and leaving water temperature; CPU according to circumstances sends instruction to output control device with it and after setting value relatively, regulates the thermal power that is subjected to of electric heating membrane calandria.CPU controls the terminal voltage of electric heating membrane calandria 4 by the angle of flow of control bidirectional thyristor T2.When the temperature difference was big, its terminal voltage raise, and the thermal power that is subjected to of electric heating membrane calandria 4 raises, and leaving water temperature raises; Otherwise when the temperature difference reduced, the terminal voltage of Electric radiant Heating Film Fast Heating body 4 also reduced, and it is descended by thermal power, and leaving water temperature also reduces.During use, only need once to set water yield by manual throttle valve 17, its leaving water temperature will be controlled within the scope of design temperature automatically, and is very easy to use.
Electrothermal tube separates water power fully, electric heating membrane calandria energising heating when water flow sensing unit 1 makes discharge greater than 1L/min, and the water flowing energising, water power is chain, the dry combustion method phenomenon can not take place.
CPU is provided with 40 ℃ of water inlet controls, that is: if with the heating of solar water heater auxiliary electrical, when water temperature was higher than 40 ℃, electric heating membrane calandria stopped heating, and protection and energy-conserving action are played in directly water outlet.
CPU is provided with 45 ℃ and goes out water management, and water heater stops heating when being higher than 45 ℃, prevents overheated water temperature scald human body.
When the electric leakage sniffer detects in the water-flowing path when occurring greater than the 36Vac electrical leakage voltage, when the electric leakage alarm device buzzing is reported to the police, pass the signal to CPU, CPU sends instruction to magnetic valve immediately current is cut off, send the dump of instruction with electric heating membrane calandria to output control device, these actions can be finished in centisecond; Equally, when the surface temperature that electric heating membrane calandria overheat detection device detects electric heating membrane calandria surpasses setting, be generally 90 ℃, pass the signal to CPU, CPU sends instruction to magnetic valve immediately current is cut off, send the dump of instruction to output control device, and the buzzing of electric heating membrane calandria temperature alarm is reported to the police with electric heating membrane calandria.Above-mentioned improvement has further improved safety in utilization.
In sum, the present invention has anti-explosion, anti-lack of water, anti-ly metals run out, anti-dry, anti-scald, anti-overheated, anti-vaporization, anti-creeping security system, the sufficient and necessary condition of normal operation is: discharge is lower than 40 ℃, water outlet water temperature greater than 1L/min, water inlet water temperature and is lower than 45 ℃, the calandria surface temperature be lower than 90 ℃, insulaion resistance greater than 4000M Ω, do not have any leaky.When any one condition can not satisfy defined terms, electric heater just will enter the safeguard protection state.
Claims (7)
1. electric heater, comprise electric heating element, it is characterized in that: the electric heating membrane calandria (4) of described electric heating element for carrying out infrared heating to the current of its inner chamber of flowing through, this electric heating membrane calandria (4) liquid sealing is serially connected with in the water-flowing path, this water-flowing path one end is communicated with the running water pipe network, the other end is communicated with spray equipment, CPU (6) the control electric heating membrane calandria (4) that is connected in series manual throttle valve (17) in the described water-flowing path and is used for by Programmable Logic Controller gets electric water flow sensing unit (1), described electric heating membrane calandria (4) comprises several electrothermal tubes (42), its end forms a total water inlet and a total delivery port by communicating pipe (41) pipeline series connection; The outer peripheral face of described electrothermal tube (42) is coated with the Electric radiant Heating Film that can carry out infrared heating to the current of its inner chamber of flowing through, described CPU (6) but the input pin connect the environment temperature sniffer (10) of testing environment temperature, the leaving water temperature sniffer (12) that is used to detect the inflow temperature sniffer (11) of inflow temperature and is used to detect coolant-temperature gage respectively, the output pin of described CPU (6) connects and is used to control the output control device (7) that electric heating membrane calandria is subjected to thermal power.
2. a kind of electric heater as claimed in claim 1 is characterized in that: described output control device (7) comprises bidirectional thyristor (T2), is used to control the photoelectrical coupler (71) of its break-make and the RC branch road in parallel with photoelectrical coupler (71); Described bidirectional thyristor (T2) is connected with electric heating membrane calandria (4), and described photoelectrical coupler (71) is connected with the output pin of CPU (6).
3. a kind of electric heater as claimed in claim 2 is characterized in that: described photoelectrical coupler comprises that a forward is arranged at the photodiode (GD) between CPU (6) and the ground, a bidirectional thyristor (T1) that is connected with the gate pole of bidirectional thyristor (T2).
4. as claim 1 or 2 or 3 described a kind of electric heaters, it is characterized in that: the input pin of described CPU (6) connects the electric leakage sniffer (14) that is used for detecting the water-flowing path electrical leakage voltage, this electric leakage sniffer connects electric leakage alarm device (15), and serial connection is subjected to the magnetic valve (5) of CPU control in the described water-flowing path.
5. a kind of electric heater as claimed in claim 4, it is characterized in that: the input pin of described CPU (6) connects the electric heating membrane calandria overheat detection device (13) that is used to prevent the electric heating membrane calandria burning, and its output pin connects electric heating membrane calandria temperature alarm (16).
6. a kind of electric heater as claimed in claim 5 is characterized in that: described CPU (6) connects display unit (8) that is used for displays temperature and the parameter set unit (9) that is used to set out coolant-temperature gage respectively.
7. a kind of electric heater as claimed in claim 1 is characterized in that: described water-flowing path is provided with current magnetizer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100434317A CN100363692C (en) | 2005-05-08 | 2005-05-08 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100434317A CN100363692C (en) | 2005-05-08 | 2005-05-08 | Electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1693810A CN1693810A (en) | 2005-11-09 |
| CN100363692C true CN100363692C (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100434317A Expired - Fee Related CN100363692C (en) | 2005-05-08 | 2005-05-08 | Electric water heater |
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| Country | Link |
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| CN (1) | CN100363692C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759198B (en) * | 2012-07-24 | 2015-10-21 | 广东威博电器有限公司 | A kind of electronic type anti-electric shock apparatus of electric heater |
| CN103604209A (en) * | 2013-11-27 | 2014-02-26 | 中山华帝燃具股份有限公司 | Electric water heater capable of automatically identifying ambient temperature |
| CN104807191B (en) * | 2014-01-26 | 2017-10-27 | 旺矽科技股份有限公司 | Heater and its guard method using photodetector detection temperature |
| CN104406289B (en) * | 2014-11-21 | 2017-06-20 | 广东众辰科技有限公司 | Cistern free quickly heats boiled water machine |
| CN110243078B (en) * | 2019-06-05 | 2021-09-03 | 芜湖美的厨卫电器制造有限公司 | Safety protection method and device for water heating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504306A (en) * | 1994-07-25 | 1996-04-02 | Chronomite Laboratories, Inc. | Microprocessor controlled tankless water heater system |
| CN2457501Y (en) * | 2000-12-20 | 2001-10-31 | 潍坊润泰智能电气有限公司 | Wall hanging type household electric heating water circulation heating and bathing device |
| CN2804711Y (en) * | 2005-05-08 | 2006-08-09 | 冷同桂 | Electrical heating water heater |
-
2005
- 2005-05-08 CN CNB2005100434317A patent/CN100363692C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504306A (en) * | 1994-07-25 | 1996-04-02 | Chronomite Laboratories, Inc. | Microprocessor controlled tankless water heater system |
| CN2457501Y (en) * | 2000-12-20 | 2001-10-31 | 潍坊润泰智能电气有限公司 | Wall hanging type household electric heating water circulation heating and bathing device |
| CN2804711Y (en) * | 2005-05-08 | 2006-08-09 | 冷同桂 | Electrical heating water heater |
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| Publication number | Publication date |
|---|---|
| CN1693810A (en) | 2005-11-09 |
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Granted publication date: 20080123 Termination date: 20100508 |