CN101352314B - Method and apparatus for reminding cleaning of electric heater - Google Patents
Method and apparatus for reminding cleaning of electric heater Download PDFInfo
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- CN101352314B CN101352314B CN2008101417100A CN200810141710A CN101352314B CN 101352314 B CN101352314 B CN 101352314B CN 2008101417100 A CN2008101417100 A CN 2008101417100A CN 200810141710 A CN200810141710 A CN 200810141710A CN 101352314 B CN101352314 B CN 101352314B
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Abstract
The invention discloses a method for prompting the cleaning of an electric heating apparatus. The method comprises the steps as follows: during the process of heating liquid, the temperature of the liquid in a vessel is measured by a preset time interval and the actual average temperature variation quantity of the liquid is calculated; the actual average temperature variation quantity is comparedwith a preset reference value, if the actual average temperature variation quantity reaches or is larger than the reference value, a cleaning prompt is sent; the reference value is determined according to the average temperature variation quantity of the pure liquid or the liquid with preset impurity quantity. The invention also provides a corresponding cleaning prompting device of the electric heating apparatus. The embodiment of the invention realizes that the cleaning prompt generates automatically according to the impurity content in a heating vessel, thus being convenient and accurate.
Description
Technical field
The present invention relates to the small household appliances field, relate in particular to a kind of reminding cleaning of electric heater method and device.
Background technology
Existing in the market the electric heating appliance that drinking water is heated of being used for, as electric kettle, coffee pot or its similar device etc., generally all have the temperature that temperature sensor detected and controlled water, but described electric heating appliance is through after using for a long time, can produce residues such as impurity or incrustation scale in its heating vessel, attached to the inwall of heating vessel, both influenced health and health, also influence the current and the function of electric heating appliance.And in the prior art, can only judge by user's range estimation or experience, determine whether and need heating vessel be cleaned, not only bother but also inaccurate.
Summary of the invention
Technical problem to be solved by this invention is: a kind of reminding cleaning of electric heater method is provided, and this method can produce clean prompting automatically according to the impurity content in the heating vessel.
The further technical problem to be solved of the present invention is: a kind of reminding cleaning of electric heater device is provided, and this device can produce clean prompting automatically according to the impurity content in the heating vessel, and is convenient and accurate.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of reminding cleaning of electric heater method, this method includes following steps:
In process,, and calculate its actual mean temperature variable quantity with the temperature of liquid in the intervalometer ware of presetting to the liquid heating;
A described actual average temperature variation and a preset reference value are compared, as if reaching or, then sending clean prompting greater than this a reference value;
And described preset reference value is under equal conditions, the mean temperature changing value when liquid impurity content reaches default limit value; Perhaps under equal conditions, the mean temperature changing value of neat liquid and a default temperature allowance sum.
Correspondingly, the present invention also provides the reminding cleaning of electric heater device, and this device includes:
Heater is used for liquid is heated;
Temperature-detecting device is used in heating process, with the temperature of liquid in the intervalometer ware of presetting;
Control device, link to each other with described temperature-detecting device, be used to calculate the actual average temperature variation of liquid, and with under described actual average temperature variation and the same terms, compare with a preset reference value, if reach or greater than this a reference value, then send hint instructions to following suggestion device, described a reference value is determined according to neat liquid or the mean temperature variable quantity that contains the liquid of default impurity level;
Suggestion device links to each other with described control device, is used for sounding or photoelectricity prompting user cleans vessel according to the hint instructions of described control device.
The invention has the beneficial effects as follows:
Embodiments of the invention are by detecting the temperature change value of liquid in the unit interval, thereby whether the content of impurity reaches the degree that needs to clean vessel in the judgement liquid, thereby realized producing clean prompting automatically according to the impurity content in the heating vessel, convenient and accurate.
The present invention is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the method flow diagram of an embodiment of reminding cleaning of electric heater method provided by the invention.
Fig. 2 is the composition structure chart of an embodiment of reminding cleaning of electric heater device provided by the invention.
The specific embodiment
With reference to figure 1, this figure is the method flow diagram of an embodiment of reminding cleaning of electric heater method provided by the invention; As shown in the figure, particularly, the process that present embodiment is finished a clean prompting is as follows:
Heat to liquid with a constant power, in the process of heating,, and calculate its actual mean temperature variable quantity with the temperature of a time interval measurement liquid in container of presetting;
A described actual average temperature variation and a preset reference value are compared, as if reaching or, then sending clean prompting greater than this a reference value.
During specific implementation, described a reference value can be preset in several ways, and its principle is the ratio thermal characteristics according to material, and promptly under the same terms, different material absorbs identical heat, and its variations in temperature is according to the difference of its specific heat and difference.Therefore, can select a kind of liquid for use, as a comparison with the benchmark object that detects, and default suitable impurity content limit value, as 5%, with under certain conditions, the mean temperature changing value when liquid impurity content reaches this default limit value is as a reference value.
Perhaps, with under certain conditions, the mean temperature changing value of neat liquid and a default temperature allowance sum are as a reference value.
Because in all substances, specific heat of water is maximum, for 1cal/g ℃, also conveniently obtain equally, therefore, adopt water as detecting and comparison other.
During specific implementation, for accurately measuring water temperature, temperature sensor preferably directly contacts with water, and in this case, water temperature is within 40 ℃～70 ℃ scopes the time, its variations in temperature is comparatively average, with the described default time interval is to be 10 seconds example, when detecting temperature and reach 40 ℃, and the opening entry variations in temperature, until to 70 ℃ of end, calculate water temperature in 40 ℃～70 ℃ scopes per 10 second temperature-averaging variable quantity △ T1;
According to the ratio thermal characteristics of liquid, because the specific heat ratio of pure water is bigger, so when heated water was free from foreign meter, the mean change amount in 10 seconds of water temperature was little; And when containing impurity in the water,, cause the mean change quantitative change of water temperature in 10 seconds big because its specific heat diminishes;
During specific implementation, the mean temperature variable quantity that pure water should reach can calculate by specific heat formula Q=cm △ T1 in theory, but in fact, this numerical value also can be subjected to the influence of factors such as the structure of heating vessel and size, therefore, preferably by recording the pure water mean temperature variable quantity in 10 seconds with the experiment under the condition, and this mean temperature variable quantity is deposited in the control device, as preset reference value.
For example, having recorded the mean temperature variable quantity in 10 seconds of pure water by experiment is 5.47 ℃; And under the same conditions, when the impurity concentration in the water reached 5%, the mean change amount that records water temperature per 10 seconds by experiment was 6.52; Therefore, can be directly reaching the mean change amount in 5% o'clock water temperature per 10 second with described impurity concentration is 6.52 ℃; Perhaps be 5.47 ℃ and add a suitable allowance with the mean temperature variable quantity in 10 seconds of pure water, as 1 ℃, 6.47 ℃; It is arbitrary as preset reference value to select it.
Thereby, when then only needing to judge that water temperature is in 40 ℃～70 ℃ scopes, whether the mean change amount in its 10 second meets or exceeds 6.52 ℃ (6.47 ℃), if meet or exceed 6.52 ℃ (6.47 ℃), then can point out the user to have cleaned by caution means such as the flicker LED lamp or the buzzers that pipes to heating vessel.
Perhaps, heating appliances in the market, coffee pot particularly, owing to reasons such as structures, it generally is the temperature of coming indirect detection water by the temperature that detects heater strip, in this case, when detected temperature range is between 103～107 ℃, its variations in temperature is more even, so can select this scope to detect, is to be 3 seconds example with the described default time interval, when detecting temperature and reach 103 ℃, the opening entry variations in temperature, until to 107 ℃ of end, and calculate water temperature in 103～107 ℃ of scopes per 3 second temperature-averaging variable quantity △ T1;
It is same as above that it detects principle, record under the pure water situation through experiment, the temperature of temperature sensor per 3 second variable quantity be 0.9 ℃; And reach in impurity concentration under 5% the situation, the temperature of temperature sensor per 3 second variable quantity be 3.6 ℃, therefore, can be directly reaching the mean change amount in 5% o'clock water temperature per 3 second with described impurity concentration is 3.6 ℃; Perhaps be 0.9 ℃ and add a suitable allowance with the mean temperature variable quantity in 3 seconds of pure water, as 2 ℃, 2.9 ℃; Select its arbitrary value as preset reference value.
Thereby, only need to judge when detected water temperature is in 103 ℃～107 ℃ scope, whether the mean change amount in 3 seconds of water temperature meets or exceeds 3.6 ℃ of a reference values (or 2.9 ℃), if meet or exceed 3.6 ℃ (or 2.9 ℃), then can point out the user to have cleaned by caution means such as the flicker LED lamp or the buzzers that pipes to heating vessel.
Describe embodiment of reminding cleaning of electric heater device provided by the invention below in detail.
With reference to figure 2, present embodiment mainly includes:
Heater 1 is used for liquid is heated;
Temperature-detecting device 2 is used in heating process, with the temperature of liquid in the intervalometer ware of presetting;
During specific implementation, the predetermined manner of described a reference value is identical with previous embodiment, repeats no more.
The above is a preferred implementation of the present invention; should be pointed out 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 are considered as protection scope of the present invention.
Claims (6)
1. a reminding cleaning of electric heater method is characterized in that, this method includes following steps:
In process,, and calculate its actual mean temperature variable quantity with the temperature of liquid in the intervalometer ware of presetting to the liquid heating;
A described actual average temperature variation and a preset reference value are compared, as if reaching or, then sending clean prompting greater than this a reference value;
Described a reference value determines according to neat liquid or the mean temperature variable quantity that contains the liquid of default impurity level, and described preset reference value is under equal conditions, the mean temperature changing value when liquid impurity content reaches default limit value; Perhaps under equal conditions, the mean temperature changing value of neat liquid and a default temperature allowance sum.
2. reminding cleaning of electric heater method as claimed in claim 1 is characterized in that, directly contacts the temperature of measuring liquid with liquid by temperature-detecting device.
3. reminding cleaning of electric heater method as claimed in claim 1 is characterized in that, calculates the temperature of liquid by the temperature of measuring heater strip.
4. reminding cleaning of electric heater method as claimed in claim 2 is characterized in that, described liquid is water, and measures its actual mean temperature variable quantity in water temperature is 40～70 ℃ scope.
5. reminding cleaning of electric heater method as claimed in claim 3 is characterized in that, described liquid is water, and measures its actual mean temperature variable quantity in water temperature is 103～107 ℃ scope.
6. a reminding cleaning of electric heater device is characterized in that, this device includes:
Heater is used for liquid is heated;
Temperature-detecting device is used in heating process, with the temperature of liquid in the intervalometer ware of presetting;
Control device links to each other with described temperature-detecting device, is used to calculate the actual average temperature variation of liquid, and with under described actual average temperature variation and the same terms, compare with a preset reference value, as if reaching or, then sending hint instructions to following suggestion device greater than this a reference value;
Suggestion device links to each other with described control device, is used for sounding or photoelectricity prompting user cleans vessel according to the hint instructions of described control device;
Described a reference value determines according to neat liquid or the mean temperature variable quantity that contains the liquid of default impurity level, and described preset reference value is under equal conditions, the mean temperature changing value when liquid impurity content reaches default limit value; Perhaps under equal conditions, the mean temperature changing value of neat liquid and a default temperature allowance sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101417100A CN101352314B (en) | 2008-08-26 | 2008-08-26 | Method and apparatus for reminding cleaning of electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101417100A CN101352314B (en) | 2008-08-26 | 2008-08-26 | Method and apparatus for reminding cleaning of electric heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101352314A CN101352314A (en) | 2009-01-28 |
| CN101352314B true CN101352314B (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101417100A Expired - Fee Related CN101352314B (en) | 2008-08-26 | 2008-08-26 | Method and apparatus for reminding cleaning of electric heater |
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| CN (1) | CN101352314B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104172931B (en) * | 2014-07-18 | 2017-11-10 | 广东美的生活电器制造有限公司 | Scale detection method and detection means for water boiling implement |
| CN105747855B (en) * | 2016-03-24 | 2019-03-15 | 佛山市顺德区美的饮水机制造有限公司 | Drinking equipment and its water outlet detection method |
| CN106524125A (en) * | 2016-11-23 | 2017-03-22 | 美的集团股份有限公司 | Vapor generator, descaling control method and descaling control device thereof, and electric appliance |
| CN108983837B (en) * | 2017-05-31 | 2020-12-22 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and cooking temperature adjusting method and device thereof |
| CN111449497A (en) * | 2020-04-20 | 2020-07-28 | 广东美的厨房电器制造有限公司 | Steam cooking equipment, scale detection method and device for steam cooking equipment and storage medium |
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2008
- 2008-08-26 CN CN2008101417100A patent/CN101352314B/en not_active Expired - Fee Related
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| CN101352314A (en) | 2009-01-28 |
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