CN104251559A - Water heater and anti-dry-heating control method thereof - Google Patents
Water heater and anti-dry-heating control method thereof Download PDFInfo
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- CN104251559A CN104251559A CN201310268449.1A CN201310268449A CN104251559A CN 104251559 A CN104251559 A CN 104251559A CN 201310268449 A CN201310268449 A CN 201310268449A CN 104251559 A CN104251559 A CN 104251559A
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Abstract
The invention discloses a water heater and an anti-dry-heating control method of the water heater. The water heater comprises a water tank, a temperature-detecting device, a heating device and a controller, wherein the water tank is used for storing water; the temperature-detecting device is arranged in the water tank to detect the temperature in the water tank; the heating device is arranged on the water tank to heat water in the water tank; the controller is connected with the temperature-detecting device and the heating device to control the heating device to be switched on or off according to a temperature-detecting value which is detected by the temperature-detecting device. According to the water heater disclosed by the invention, not only is the structure simple, but also the heating of the water tank is more accurately controlled, so that the use of a user is more facilitated.
Description
Technical field
The present invention relates to water heater arrangement field, especially relate to a kind of water heater and anti-dry control method thereof.
Background technology
Existing water heater is generally could start shooting be full of water in water tank after to heat, but sometimes due to the reason such as general idea of operating personnel, water heater is probably started shooting in anhydrous situation and is heated in water tank, the dry combustion method of water heater will be caused like this, the damage of water heater key components and parts in this situation, may be caused.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, the present invention needs to provide a kind of water heater, and this water heater not only structure is simple, and more accurate to the computer heating control of water tank, the use of convenient user.
The present invention also needs the anti-dry control method providing this water heater a kind of.Can ensure that by adopting this control method heater dry-fire condition can not occur, and avoids causing damage to heater, increases the service life, improving the security performance of water heater.
The water heater of embodiment according to a first aspect of the present invention, comprising: for the water tank of water storage; Temperature-detecting device, described temperature-detecting device is located in described water tank to detect described water the temperature inside the box; Heater, described heater is located on described water tank with the water in heating water tank; And controller, described controller is connected with described temperature-detecting device and described heater and controls described heater with the temperature detection value measured by described temperature-detecting device and open or cut out.
According to the water heater of the embodiment of the present invention, by arranging controller, thus can the temperature in water tank be detected control temperature checkout gear, and control heater according to measured temperature detection value to open or close, such as, when measured temperature detection value is higher than predetermined temperature, heater stop work can be controlled, when measured temperature detection value is lower than predetermined temperature, heater can be controlled and proceed heating, to reach required temperature requirement.Therefore, according to the water heater of the embodiment of the present invention, not only structure is simple, and more accurate to the computer heating control of water tank, the use of convenient user.
In addition, also following additional technical feature can be had according to water heater of the present invention:
According to one embodiment of present invention, described controller comprises: temperature detection control module, and described temperature detection control module is connected with described temperature-detecting device; Heater control module, described heater control module is connected with described heater; Judge module, described judge module is connected the temperature that receives measured by described temperature-detecting device and controls described heater according to this temperature to open or close with described temperature detection control module and described heater control module.
According to one embodiment of present invention, described heater is electrical heating, and described temperature-detecting device is located in described water tank and its top contiguous and arranges, and described temperature-detecting device is positioned on described electrical heating.
According to one embodiment of present invention, described heater is heat(ing) coil, and described heat(ing) coil is arranged around described tank inner wall.Heat(ing) coil can be made thus more even to the heating of water in water tank.
According to one embodiment of present invention, described heater is heat(ing) coil, and described heat(ing) coil is arranged around described tank outer wall.Heat(ing) coil can be made thus more even to the heating of water in water tank.
According to one embodiment of present invention, described temperature-detecting device is temperature sensor.The manufacturing cost of water heater can be reduced thus.
According to one embodiment of present invention, described temperature-detecting device is multiple and interval is located in described water tank.By arranging multiple temperature-detecting device, thus the detection of temperature-detecting device to the temperature in water tank can be made more accurate.
The anti-dry control method of embodiment comprises the steps: according to a second aspect of the present invention
S10, control described temperature-detecting device and detect temperature in described water tank to obtain the first temperature value T0;
S20, control described heater described water tank is heated, when after described heater H running time, again detect temperature in described water tank to obtain the second temperature value Th;
S30, described second temperature value Th and described first temperature value T0 and temperature rise preset value delta t sum to be compared, to determine whether have enough water in described water tank.
According to the anti-dry control method of the water heater of the embodiment of the present invention, can when not increasing cost, by comparing the temperature before the heating in water tank and after heating, thus can determine, in water tank, whether there is enough water, can ensure that heater dry-fire condition can not occur thus, avoid causing damage to heater, increase the service life, improve the security performance of water heater.
In addition, also following additional technical feature can be had according to the anti-dry control method of water heater of the present invention:
In described step S30:
As Th≤T0+ Δ t, control described heater and heating is proceeded to described water tank;
As Th > T0+ Δ t, control described heater stop and described water tank is heated.
Described water heater also comprises water replanishing device, and in described step S30:
As Th≤T0+ Δ t, control described heater and heating is proceeded to described water tank;
As Th > T0+ Δ t, control described water replanishing device and moisturizing is carried out to described water tank.
Described temperature-detecting device is for multiple and average to obtain described first temperature value T0 and described second temperature value Th accordingly to temperature value in the water tank measured by described multiple temperature-detecting device respectively in step S10 and step S20.Measured temperature can be made thus more accurate.
Described running time, the scope of H was 0 ~ 30min.
Described running time, the scope of H was 5 ~ 10min.Under the prerequisite avoiding test error, the maximum running time of heater can be reduced thus, more effectively avoid heater generation dry combustion method phenomenon.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structure sectional view of water heater according to an embodiment of the invention;
Fig. 2 is the structure sectional view of water heater in accordance with another embodiment of the present invention;
Fig. 3 is the structure sectional view of the water heater according to another embodiment of the present invention;
Fig. 4 is the flow chart of the anti-dry control method of water heater according to an embodiment of the invention;
Fig. 5 is the flow chart of the anti-dry control method of water heater in accordance with another embodiment of the present invention.
Description of reference numerals
Water heater 100;
Water tank 1; Temperature-detecting device 2; Heater 3.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " interior ", " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
The water heater 100 of embodiment is according to a first aspect of the present invention described below with reference to Fig. 1 to Fig. 3, this water heater 100 for heating water to supply the hot water of people's life, work etc.
As shown in Figure 1 to Figure 3, comprise for the water tank 1 of water storage, temperature-detecting device 2, heater 3 and controller (scheming not shown) according to the water heater 100 of the embodiment of the present invention.
Particularly, temperature-detecting device 2 is located to detect described water the temperature inside the box in water tank 1, and heater 3 is located on water tank 1 with the water in heating water tank.Alternatively, it is inner that heater 3 can be located at water tank 1, or it is outside also can be located at water tank 1.Wherein, controller is connected with temperature-detecting device 2, heater 3 and controls heater 3 with the temperature detection value measured by temperature-detecting device 2 and open or cut out.
According to the water heater 100 of the embodiment of the present invention, by arranging controller, thus can the temperature in control temperature checkout gear 2 pairs of water tanks 1 detect, and control heater 3 according to measured temperature detection value to open or close, such as, when measured temperature detection value is higher than predetermined temperature, heater 3 can be controlled quit work, when measured temperature detection value is lower than predetermined temperature, heater 3 can be controlled and proceed heating, to reach required temperature requirement.Therefore, according to the water heater 100 of the embodiment of the present invention, not only structure is simple, and more accurate to the computer heating control of water tank 1, the use of convenient user.
Here be understandable that, this controller can control this temperature-detecting device 2 and detect temperature in described water tank 1, to obtain temperature detection value, this controller can also control heater 3 pairs of water tanks 1 and heat, and this controller can judge whether have enough water in water tank 1 by the temperature detection value measured by temperature-detecting device 2, can prevent water tank 1 dry combustion method thus.Wherein, the anti-dry control method of this water heater will be described in following content.
Particularly, controller can comprise temperature detection control module, heater 3 control module and judge module.Temperature detection control module is connected with temperature-detecting device 2, detects to utilize the temperature in this temperature detection control module control temperature checkout gear 2 pairs of water tanks 1.Heater 3 control module is connected with heater 3, controls heater 3 open or close to utilize this heater 3 control module.Wherein, judge module is connected with temperature detection control module and heater 3 control module, opens to receive temperature measured by temperature-detecting device 2 and to control heater 3 according to this temperature or closes.Particularly, can also by front and back more at certain time intervals, the change of the temperature in water tank 1 judges whether have enough water in water tank 1, and then determines whether that needing to start heater 3 pairs of water tanks 1 heats.
As shown in Figure 1, in some embodiments of the invention, heater 3 can be electrical heating, and temperature-detecting device 2 is located in the water tank 1 and top of contiguous water tank 1 and arranges, and temperature-detecting device 2 is positioned on electrical heating.The temperature that such temperature-detecting device 2 detects is the temperature of upper space temperature in water tank 1 or upper water.
As shown in Figure 2, in other embodiments of the present invention, heater 3 can also be heat(ing) coil, and heat(ing) coil is arranged around water tank 1 inwall, and namely heat(ing) coil is located at the inner and madial wall around water tank 1 of water tank 1 and arranges.Heat(ing) coil can be made thus more even to the heating of water in water tank 1.
Particularly, heat(ing) coil can be connected with the hot water source of outside, carries out heat exchange by the water in hot water source and water tank 1, to reach the object of heating water tank 1.Wherein, alternatively, water heater 100 according to the present invention can be Teat pump boiler, and heat(ing) coil can be connected with the evaporimeter of heat pump, and heat(ing) coil can be heated the water in water tank 1 by the mode of heat exchange.Wherein be understandable that, the structure of heat pump and principle are known to those skilled in the art, are not described in detail in this.
Certain the present invention is not limited to this, and in other embodiments of the present invention, as shown in Figure 3, heater 3 is heat(ing) coil, and heat(ing) coil is arranged around water tank 1 outer wall, and namely heat(ing) coil is located at the outside and lateral wall around water tank 1 of described water tank 1 and arranges.The heating of heat(ing) coil to the water in water tank 1 can be made thus more even.
In embodiment more of the present invention, temperature-detecting device 2 can be temperature sensor.Because temperature sensor price is low, by temperature-detecting device 2 being set to temperature sensor thus the manufacturing cost of water heater 100 can being reduced.
In preferred embodiments more of the present invention, temperature-detecting device 2 is multiple and interval is located in water tank 1.As shown in Figure 1-Figure 3, temperature measured by multiple temperature-detecting device 2 can average to obtain the temperature in more accurate water tank 1, that is, by arranging multiple temperature-detecting device 2, thus the detection of the temperature in temperature-detecting device 2 pairs of water tanks 1 can be made more accurate.
Particularly, as shown in Figure 1, when heater 3 is for electrical heating, multiple temperature-detecting device 2 can be respectively adjacent to water tank 1 top and arrange.As shown in Figures 2 and 3, when heater 3 is heat exchanger tube, multiple temperature-detecting device 2 can be evenly distributed in water tank 1 inside and arrange.
The anti-dry control method of the water heater 100 of embodiment is according to a second aspect of the present invention described below with reference to Fig. 4 and Fig. 5.First it should be noted that, when water shortage in water tank 1, heat if now open heater 3, probably damage is caused to heater 3, such as electrical heating may be burnt, or when water heater 100 is Teat pump boiler, probably damage be caused to parts such as compressors.
Particularly, this control method comprises the steps:
S10, control temperature checkout gear 2 detect temperature in water tank 1 to obtain the first temperature value T0.That is, before heater 3 pairs of water tanks 1 heat, first detected by the temperature in temperature-detecting device 2 pairs of water tanks 1, and obtain the first temperature value T0.
S20, control heater 3 pairs of water tanks 1 heat, and when after heater 3 H running time, the temperature again in detection water tank 1 is to obtain the second temperature value Th.
S30, the second temperature value Th and the first temperature value T0 and temperature rise preset value delta t sum to be compared, to determine, in water tank 1, whether there is enough water.
According to the anti-dry control method of the water heater 100 of the embodiment of the present invention, can under the prerequisite not increasing water heater 100 cost, by comparing the temperature before the heating in water tank 1 and after heating, thus can determine, in water tank 1, whether there is enough water, can ensure that heater 3 dry-fire condition can not occur thus, avoid causing damage to heater 3, increase the service life, improve the security performance of water heater 100.
Particularly, in one particular embodiment of the present invention, as shown in Figure 2, in step s 30, following situation can be comprised:
S31, as Th≤T0+ Δ t, control heater 3 pairs of water tanks 1 and proceed heating;
S32, as Th > T0+ Δ t, control heater 3 stop heating water tank 1.
Here it is to be appreciated that when the water shortage in water tank 1, such as maximum conditions: when in situation anhydrous in water tank 1, the first temperature value T0 and the temperature being water tank 1 inner air shown by the second temperature value Th; When the water yield in water tank 1 is sufficient, the first temperature value T0 and the temperature being water tank 1 internal water shown by the second temperature value Th.
Due to the speed that the speed of air heats temperature rising raises faster than water temperature, so as Th > T0+ Δ t, first temperature value T0 and the temperature being water tank 1 inner air shown by the second temperature value Th are described, namely the water shortage in water tank 1, heater 3 should be closed, stop heating water tank 1, prevent dry combustion method; As Th≤T0+ Δ t, the temperature for water tank 1 internal water shown by the first temperature value T0 and the second temperature value Th is described, the water yield in water tank 1 is enough, can carry out work according to the normal procedure of water heater 100, such as, can proceed heating to water tank 1.
Particularly, in another specific embodiment of the present invention, as shown in Figure 3, in step s 30, following situation can be comprised:
Water heater 100 also comprises water replanishing device, and in step s 30,
S33, as Th≤T0+ Δ t, control heater 3 pairs of water tanks 1 and proceed heating;
S34, as Th > T0+ Δ t, control water replanishing device moisturizing is carried out to water tank 1.
With above-mentioned specific embodiment unlike, as Th > T0+ Δ t, water replanishing device can be controlled moisturizing is carried out to water tank 1, heater 3 now can be made to keep the duty of heating, frequent unlatching or closedown heater 3 can be avoided thus.
In preferred embodiments more of the present invention, temperature-detecting device 2 is for multiple and average to obtain corresponding first temperature value T0 and the second temperature value Th to temperature value in the water tank 1 measured by multiple temperature-detecting device 2 respectively in step S10 and step S20.In other words, the first temperature value T0 and the second temperature value Th can be mean value, and measured temperature can be made thus more accurate.
In examples more of the present invention, this running time, the scope of H can be 0 ~ 30min.Preferably, this running time H scope can be 5 ~ 10min.Under the prerequisite avoiding test error, the maximum running time of heater 3 can be reduced thus, more effectively avoid heater 3 that dry combustion method phenomenon occurs.
Here it should be noted that, temperature rise preset value delta t is determined by parameters such as the heating powers of the volume of water tank 1, heater 3, and for different water heaters 100, this temperature rise preset value delta t is different, and this temperature rise preset value delta t can be recorded by experiment.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (13)
1. a water heater, is characterized in that, comprising:
For the water tank of water storage;
Temperature-detecting device, described temperature-detecting device is located in described water tank to detect described water the temperature inside the box;
Heater, described heater is located on described water tank with the water in heating water tank; And
Controller, described controller is connected with described temperature-detecting device and described heater and controls described heater with the temperature detection value measured by described temperature-detecting device and open or cut out.
2. water heater according to claim 1, is characterized in that, described controller comprises:
Temperature detection control module, described temperature detection control module is connected with described temperature-detecting device;
Heater control module, described heater control module is connected with described heater; And
Judge module, described judge module is connected the temperature that receives measured by described temperature-detecting device and controls described heater according to this temperature to open or close with described temperature detection control module and described heater control module.
3. water heater according to claim 1 and 2, is characterized in that, described heater is electrical heating, and described temperature-detecting device is located in described water tank and its top contiguous and arranges, and described temperature-detecting device is positioned on described electrical heating.
4. water heater according to claim 1 and 2, is characterized in that, described heater is heat(ing) coil, and described heat(ing) coil is arranged around described tank inner wall.
5. water heater according to claim 1 and 2, is characterized in that, described heater is heat(ing) coil, and described heat(ing) coil is arranged around described tank outer wall.
6. water heater according to claim 1, is characterized in that, described temperature-detecting device is temperature sensor.
7. according to the water heater that claim 6 is stated, it is characterized in that, described temperature-detecting device is multiple and interval is located in described water tank.
8. an anti-dry control method for water heater, described water heater is the water heater according to any one of claim 1-7, it is characterized in that, described anti-dry control method comprises the steps:
S10, control described temperature-detecting device and detect temperature in described water tank to obtain the first temperature value T0;
S20, control described heater described water tank is heated, when after described heater H running time, again detect temperature in described water tank to obtain the second temperature value Th;
S30, described second temperature value Th and described first temperature value T0 and temperature rise preset value delta t sum to be compared, to determine whether have enough water in described water tank.
9. the anti-dry control method of water heater according to claim 8, is characterized in that, in described step S30:
As Th≤T0+ Δ t, control described heater and heating is proceeded to described water tank;
As Th > T0+ Δ t, control described heater stop and described water tank is heated.
10. the anti-dry control method of water heater according to claim 8, is characterized in that, described water heater also comprises water replanishing device, and in described step S30:
As Th≤T0+ Δ t, control described heater and heating is proceeded to described water tank;
As Th > T0+ Δ t, control described water replanishing device and moisturizing is carried out to described water tank.
The anti-dry control method of 11. water heaters according to claim 8, it is characterized in that, described temperature-detecting device is for multiple and average to obtain described first temperature value T0 and described second temperature value Th accordingly to temperature value in the water tank measured by described multiple temperature-detecting device respectively in step S10 and step S20.
The anti-dry control method of 12. water heaters according to claim 8, is characterized in that, described running time, the scope of H was 0 ~ 30min.
The anti-dry control method of 13. water heaters according to claim 12, is characterized in that, described running time, the scope of H was 5 ~ 10min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310268449.1A CN104251559A (en) | 2013-06-28 | 2013-06-28 | Water heater and anti-dry-heating control method thereof |
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| CN201310268449.1A CN104251559A (en) | 2013-06-28 | 2013-06-28 | Water heater and anti-dry-heating control method thereof |
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Cited By (5)
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| CN104776604A (en) * | 2015-03-31 | 2015-07-15 | 芜湖美的厨卫电器制造有限公司 | Control method for preventing dry burning of electric water heater and electric water heater |
| CN107401795A (en) * | 2017-08-07 | 2017-11-28 | 广东美的制冷设备有限公司 | Humidification device, anti-dry control method, air conditioner and storage medium |
| CN108158411A (en) * | 2018-03-07 | 2018-06-15 | 佛山市顺德区美的饮水机制造有限公司 | Anti-dry control method, anti-dry control system and drinking device |
| CN108302772A (en) * | 2018-02-12 | 2018-07-20 | 四川长虹电器股份有限公司 | Liquid heater anti-dry control method |
| CN112178943A (en) * | 2020-09-18 | 2021-01-05 | 华帝股份有限公司 | Anti-freezing control method and water heater using same |
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| CN108302772A (en) * | 2018-02-12 | 2018-07-20 | 四川长虹电器股份有限公司 | Liquid heater anti-dry control method |
| CN108158411A (en) * | 2018-03-07 | 2018-06-15 | 佛山市顺德区美的饮水机制造有限公司 | Anti-dry control method, anti-dry control system and drinking device |
| CN112178943A (en) * | 2020-09-18 | 2021-01-05 | 华帝股份有限公司 | Anti-freezing control method and water heater using same |
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Application publication date: 20141231 |
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| RJ01 | Rejection of invention patent application after publication |