CN102052969A - Novel roaster capable of acquiring actual temperature of food in high humidity environment - Google Patents
Novel roaster capable of acquiring actual temperature of food in high humidity environment Download PDFInfo
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- CN102052969A CN102052969A CN2009100710264A CN200910071026A CN102052969A CN 102052969 A CN102052969 A CN 102052969A CN 2009100710264 A CN2009100710264 A CN 2009100710264A CN 200910071026 A CN200910071026 A CN 200910071026A CN 102052969 A CN102052969 A CN 102052969A
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Abstract
The invention discloses a novel roaster capable of acquiring actual temperature of food in a high humidity environment. The novel roaster can compensate infrared intensity of the food received and detected by an infrared temperature sensor in the high humidity environment caused by water vapor and overcome the influence of the water vapor on the infrared intensity value of the food received and detected by the infrared temperature sensor so as to output the accurate actual temperature value of the food and the heating condition of the food; therefore, the specific operation of other parts in the roaster is controlled, the product using experience of a user is enhanced and the new roaster has important production practice significance.
Description
Technical field
The present invention relates to the temperature detection technical field, particularly relate to a kind of new roaster that obtains food actual temperature under high humidity environment.
Background technology
Micro-wave oven is to produce microwave by electric current, and microwave irradiation surface of heating object in the cavity is come device that article are heated.As everyone knows, micro-wave oven is a kind of modernization cooking kitchen range with microwave heating of food.The microwave that it adopted is a kind of electromagnetic wave.This electromagnetic energy is not only much bigger than common radiowave, but also characteristics are arranged very much, and microwave at a touch metal just reflects, and metal has no idea to absorb or conduct it at all; Microwave can pass insulating material such as glass, pottery, plastics, but can consumed energy; And contain the food of moisture, and microwave not only can not see through, and its energy can be absorbed on the contrary.Based on these characteristics, micro-wave oven is heat food well, has obtained utilization widely in daily life.
In general, micro-wave oven is divided into single function for microwave oven and multifunction microwave oven, single function for microwave oven is to adopt microwave heating, promptly be a kind ofly to seal, connect the power supply of magnetron after placed within of the food, make it produce high-frequency microwave, by waveguide high-frequency microwave is shone on the food, makes about 2,400,000,000 5 thousand ten thousand times of hydrone internal vibration in a second of food, by the heat of friction that produces between hydrone to cooking food, heating; It is the micro-wave oven of one that multifunction microwave oven adopts microwave heating and other type of heating, and common type of heating has light wave heating and electrothermal tube heating, is also referred to as barbecue type microwave oven.
Fig. 1 is a kind of micro-wave oven part-structure stereographic map with baking function of prior art.As shown in Figure 1, the micro-wave oven with baking function 1 of this prior art mainly comprises: the external box of microvave of not shown formation micro-wave oven external structure; Be arranged on inside one side of external box of microvave, place the cooking cavity 2 for the treatment of cooking food within it on the rotating disk 7 that can be provided with; Be arranged on the inside opposite side of external box of microvave, the electric control chamber 4 of magnetron 3 and not shown various electronic components such as high-tension transformer is installed in it; Be installed on the barbecue tube assembly 5 that is positioned at cooking cavity 2 end faces and can produce two barbecue tube 6 of emittance; And not shown front that is arranged on external box of microvave and the alternative fire door that opens and closes cooking cavity 2.When utilizing this micro-wave oven to carry out cooking food, the emittance that is produced by barbecue tube 6 can be radiated on the food in the cooking cavity 2, can roast this food thus.
For the curing range that comprises above-mentioned micro-wave oven, in to food heating process, give birth to ripe situation in order to understand curing of food, need the temperature of food be detected, normally adopt infrared temperature sensor (IR Sensor) to be captured in the temperature of food in the curing range heated chamber at present.Need to prove, each object (as food) all constantly space radiation towards periphery go out infrared ray, the object that temperature is high, to extraradial infra-red intensity height, infrared temperature sensor can be known the temperature that object has by the infra-red intensity that the reception object radiation goes out.
But, because needing food is the food that contains large quantity of moisture, in the process that curing range heats food, continuous rising along with food temperature, give out a large amount of water vapours easily, form high humidity environment, in view of water vapour absorbs infrared ray easily, water vapour is many more, can assimilate food the more infra-red intensity of institute's radiation of water vapour, make like this under the influence of water vapour, infrared temperature sensor receives the infra-red intensity that food gave off that detects and is subjected to very big influence, because the object temperature that infrared temperature sensor is exported and the object infra-red intensity of acquisition that this infrared temperature sensor is surveyed are proportional, so the food temperature that infrared temperature sensor is exported is at the food temperature that is subjected to after water vapour influences, and there is very big deviation between the real food temperature, therefore when food in the following time of high humidity environment of containing a large amount of water vapours, the existing curing range of above-mentioned micro-wave oven that comprises all can't come the temperature of food is prepared to detect by infrared temperature sensor, temperature value accurately can't be exported, thereby the heating progress of food can't be known.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of new roaster that obtains food actual temperature under high humidity environment, it can receive the food infra-red intensity that detects to infrared temperature sensor under the high humidity environment of water vapour formation and compensate, overcome the influence of water vapour to the food infra-red intensity numerical value of detection that infrared temperature sensor receives, thereby export actual accurately food temperature value, know the heating progress of food, concrete operation with miscellaneous part in the control curing range, strengthened user's product use experience, be of great practical significance.
For this reason, the invention provides a kind of new roaster that improves infrared sensor precision under high humidity environment, include device case 1, first infrared temperature sensor 21 is installed on the described device case 1, the bottom of described device case 1 is provided with pallet 3, described pallet 3 is used to place food to be baked, and the distance between the center of described first infrared temperature sensor 21 and pallet 3 is D2;
Second infrared temperature sensor 22 is installed on the described device case 1, on the described device case 1 infrared radiation source 4 is installed, the distance between described second infrared temperature sensor 22 and the described infrared radiation source 4 is D1;
Described roaster also includes microprocessor MPU, is used for when food is heated, and calculates the actual temperature value Y that obtains food and informs the user according to the temperature compensation formula of food, and described temperature compensation formula is:
Wherein, X is the temperature maximal value of curing range second infrared temperature sensor, 22 outputs when not heating, x is the food temperature value of curing range second infrared temperature sensor, 22 outputs when heating, and y is the food temperature value of curing range first infrared temperature sensor, 21 outputs when heating.
Preferably, described first infrared temperature sensor 21 is positioned at the top of described device case 1, and described second infrared temperature sensor 22 is positioned on the left side wall of described device case 1, and described infrared radiation source 4 is positioned on the right side wall of described device case 1.
Preferably, described infrared radiation source 4 is a bulb.
By above technical scheme provided by the invention as seen, compared with prior art, the present invention proposes a kind of new roaster that obtains food actual temperature under high humidity environment, it can receive the food infra-red intensity that detects to infrared temperature sensor under the high humidity environment of water vapour formation and compensate, overcome the influence of water vapour to the food infra-red intensity numerical value of detection that infrared temperature sensor receives, thereby export actual accurately food temperature value, know the heating progress of food, concrete operation with miscellaneous part in the control curing range, strengthened user's product use experience, be of great practical significance.
Description of drawings
Fig. 1 is a kind of micro-wave oven part-structure stereographic map with baking function of prior art;
Fig. 2 is a kind of structural representation that obtains the new roaster of food actual temperature under high humidity environment provided by the invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 2 is a kind of structural representation that obtains the new roaster of food actual temperature under high humidity environment provided by the invention.
Referring to Fig. 2, the invention provides a kind of new roaster that obtains food actual temperature under high humidity environment, this roaster includes device case 1, the top of described device case 1 is equipped with first infrared temperature sensor 21, the bottom of described device case 1 is provided with pallet 3, described pallet 3 is used to place food to be baked, distance between the center of described first infrared temperature sensor 21 and pallet 3 is D2, and described first infrared temperature sensor 21 is used to survey and is positioned at the infra-red intensity that food gave off on the described pallet 3 and shows the temperature value of exporting food;
In the present invention, described roaster is the multiple device with the function of baking that comprises baking box, micro-wave oven;
The left side wall of described device case 1 is equipped with second infrared temperature sensor 22, infrared radiation source 4 is installed on the right side wall of described device case 1, distance between described second infrared temperature sensor 22 and the described infrared radiation source 4 is D1, and described second infrared temperature sensor 22 is used to survey the infra-red intensity that described infrared radiation source 4 gives off and exports the temperature value of infrared radiation source 4;
On the specific implementation, described infrared radiation source 4 is preferably the bulb of a heating;
Need to prove, because in the process that curing range heats food, continuous rising along with food temperature, give out a large amount of water vapours easily, form high humidity environment, in view of water vapour absorbs infrared ray easily, water vapour is many more, can assimilate food the more infra-red intensity of institute's radiation of water vapour, and because unit bodies ponding is a constant to ultrared absorption, the water vapour of the unit volume of high concentration contains the moisture of more volumes, therefore described first infrared temperature sensor 21 detects the concentration and the system of the distance dependent between this first infrared sensor 21 and the food of the infra-red intensity that food gave off and the water vapour of acquisition, be subjected to the influence of distance between the concentration of water vapour and this first infrared sensor 21 and the food, need to prove that here the infra-red intensity that object gave off of acquisition that infrared temperature sensor detects and it show that the temperature of output is proportional.
When not heating in the described curing range, described curing range does not exist because the formed water vapour of heat food, thereby can the infra-red intensity that infrared radiation source 4 is given off not impacted, open infrared radiation source 4 so, the infrared radiation source temperature maximal value of corresponding output is X to described second infrared temperature sensor 22 according to surveying the infra-red intensity that infrared radiation source 4 gave off that obtains;
When being placed with food in the described baked goods and carrying out heating operation, open infrared radiation source 4 simultaneously, food gives out water vapour, at this moment the infrared radiation source temperature value of corresponding output is x to second infrared temperature sensor 22 according to surveying the acquisition infra-red intensity that infrared radiation source 4 gave off under the water vapour condition, and the food temperature value of correspondence output is y according to surveying the infra-red intensity that food gave off on the pallet 3 that obtains by first infrared temperature sensor 21;
As mentioned above, because water vapour absorbs infrared ray easily, water vapour has influence on the infra-red intensity numerical value that food that infrared temperature sensor surveys gives off easily, and the temperature value y of corresponding output is not the actual temperature value Y that food had so first infrared temperature sensor 21 is according to surveying the infra-red intensity that food gave off on the pallet 3 that obtains.
Need to prove, under identical water vapor, the loss of strength rate of infrared ray on unit distance is identical, as previously mentioned, in view of the infra-red intensity that object gave off of acquisition that infrared temperature sensor is surveyed and its show that the temperature of output is proportional, ratio between temperature value and the infra-red intensity value is a constant, and therefore, food in the loss percentage of the infrared ray that gives off after the heating on unit distance is:
The loss percentage of the infrared ray that infrared radiation source 4 gives off on unit distance is:
Therefore,
Thereby can draw the actual temperature value that described food has
This formula is the temperature compensation formula of food.
For example, when D1=390mm (millimeter), D2=260mm, when X=80 spends, the actual temperature value that described food had
Therefore, show respectively that according to first infrared temperature sensor 21 and second infrared temperature sensor 22 the infrared radiation source temperature value x and the food temperature value y of output promptly can draw the actual temperature Y that food has.
Based on above-mentioned principle, for the temperature value that infrared temperature sensor is exported compensates, the final food temperature that obtains reality, roaster provided by the invention also includes microprocessor MPU, this microprocessor is used for when food is heated, temperature compensation formula according to food calculates the actual temperature value Y that obtains food and informs the user, and described temperature compensation formula is:
Wherein, X is the infrared radiation source temperature maximal value of curing range second infrared temperature sensor, 22 outputs when not heating, x is the infrared radiation source temperature value of curing range second infrared temperature sensor, 22 outputs when heating, and y is the food temperature value of curing range first infrared temperature sensor, 21 outputs when heating.
In sum, compared with prior art, the invention provides a kind of new roaster that obtains food actual temperature under high humidity environment, it can receive the food infra-red intensity that detects to infrared temperature sensor under the high humidity environment of water vapour formation and compensate, overcome the influence of water vapour to the food infra-red intensity numerical value of detection that infrared temperature sensor receives, thereby export actual accurately food temperature value, know the heating progress of food, concrete operation with miscellaneous part in the control curing range, strengthened user's product use experience, be of great practical significance.
The above only 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 should be considered as protection scope of the present invention.
Claims (3)
1. new roaster that improves infrared sensor precision under high humidity environment, it is characterized in that, include device case (1), first infrared temperature sensor (21) is installed on the described device case (1), the bottom of described device case (1) is provided with pallet (3), described pallet (3) is used to place food to be baked, and the distance between the center of described first infrared temperature sensor (21) and pallet (3) is D2;
Second infrared temperature sensor (22) is installed on the described device case (1), infrared radiation source (4) is installed on the described device case (1), the distance between described second infrared temperature sensor (22) and the described infrared radiation source (4) is D1;
Described roaster also includes microprocessor, is used for when food is heated, and calculates the actual temperature value Y that obtains food and informs the user according to the temperature compensation formula of food, and described temperature compensation formula is:
Wherein, X is the temperature maximal value of curing range second infrared temperature sensor (22) output when not heating, x is the food temperature value of curing range second infrared temperature sensor (22) output when heating, and y is the food temperature value of curing range first infrared temperature sensor (21) output when heating.
2. roaster as claimed in claim 1, it is characterized in that, described first infrared temperature sensor (21) is positioned at the top of described device case (1), described second infrared temperature sensor (22) is positioned on the left side wall of described device case (1), and described infrared radiation source (4) is positioned on the right side wall of described device case (1).
3. roaster as claimed in claim 1 or 2 is characterized in that, described infrared radiation source (4) is a bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910071026.4A CN102052969B (en) | 2009-10-29 | 2009-10-29 | Novel roaster capable of acquiring actual temperature of food in high humidity environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910071026.4A CN102052969B (en) | 2009-10-29 | 2009-10-29 | Novel roaster capable of acquiring actual temperature of food in high humidity environment |
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| CN102052969A true CN102052969A (en) | 2011-05-11 |
| CN102052969B CN102052969B (en) | 2014-12-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402072A (en) * | 2016-05-18 | 2017-11-28 | 宁波欧琳厨房电器有限公司 | Temperature measurement module applied to flavoring addition auxiliary equipment |
| CN109000799A (en) * | 2017-06-06 | 2018-12-14 | 佛山市顺德区美的电热电器制造有限公司 | Infrared measurement of temperature method, system and cooking apparatus for cooking apparatus |
| CN109579999A (en) * | 2017-09-29 | 2019-04-05 | 青岛海尔特种电冰柜有限公司 | Infrared sensor detects temperature correction method, system and refrigerator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0129239B1 (en) * | 1994-06-11 | 1998-04-09 | 구자홍 | Cooking device of microwave-oven |
| CN1050415C (en) * | 1994-10-27 | 2000-03-15 | Lg电子株式会社 | Cooking arrangement with infrared sensor |
| JP2001235155A (en) * | 2000-02-22 | 2001-08-31 | Toshiba Corp | Cooking device |
| CN101162171B (en) * | 2007-11-28 | 2010-06-09 | 重庆大学 | Method for measuring surface temperature of high-temperature casting billet within water fog medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402072A (en) * | 2016-05-18 | 2017-11-28 | 宁波欧琳厨房电器有限公司 | Temperature measurement module applied to flavoring addition auxiliary equipment |
| CN109000799A (en) * | 2017-06-06 | 2018-12-14 | 佛山市顺德区美的电热电器制造有限公司 | Infrared measurement of temperature method, system and cooking apparatus for cooking apparatus |
| CN109579999A (en) * | 2017-09-29 | 2019-04-05 | 青岛海尔特种电冰柜有限公司 | Infrared sensor detects temperature correction method, system and refrigerator |
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