CN102052969B - 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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- CN102052969B CN102052969B CN200910071026.4A CN200910071026A CN102052969B CN 102052969 B CN102052969 B CN 102052969B CN 200910071026 A CN200910071026 A CN 200910071026A CN 102052969 B CN102052969 B CN 102052969B
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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 temperature detection technical field, particularly relate to a kind of roaster obtaining actual temperature of food under high humidity environment.
Background technology
Micro-wave oven produces microwave by electric current, and by device that the surface of heating object in microwave irradiation to cavity is heated article.As everyone knows, micro-wave oven is a kind of modernization cooking kitchen range of microwave heating of food.Its microwave adopted is a kind of electromagnetic wave.This electromagnetic energy is not only much bigger than common radiowave, but also has feature very much, and microwave at a touch metal just reflects, and metal has no idea absorb or conduct it at all; Microwave can pass the insulating material such as glass, pottery, plastics, but can not consumed energy; And containing the food of moisture, microwave not only can not be through, its energy can be absorbed on the contrary.Based on these features, micro-wave oven can heat food well, obtains and use 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 adopts microwave heating, namely be a kind of by behind portion placed within for food, close, connect the power supply of magnetron, it is made to produce high-frequency microwave, by waveguide, high-frequency microwave is irradiated on food, makes the internal vibration about 2,400,000,000 5 thousand ten thousand times in a second of the hydrone of food, by the heat of friction that produces between hydrone to cooking food, heating; The micro-wave oven that multifunction microwave oven adopts microwave heating and other type of heating to be integrated, common type of heating has optical wave heating and electrothermal tube heating, 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 1 with baking function of this prior art mainly comprises: the external box of microvave of not shown formation micro-wave oven external structure; Be arranged on the side, inside of external box of microvave, the rotating disk 7 that can arrange placed the cooking cavity 2 of food to be cooked within it; Be arranged on the inside opposite side of external box of microvave, the electric control chamber 4 of the various electronic component such as magnetron 3 and not shown high-tension transformer is installed in it; Be arranged on be positioned at cooking cavity 2 end face barbecue tube assembly 5 on and two barbecue tube 6 of emittance can be produced; And not shown to be arranged on before external box of microvave and the fire door of alternative opening and closing cooking cavity 2.When utilizing this micro-wave oven to carry out cooking food, the emittance produced by barbecue tube 6 can be radiated on the food in cooking cavity 2, can roast thus to this food.
For the curing range comprising above-mentioned micro-wave oven, to in heat foods process, ripe situation is given birth in order to understand curing of food, need to detect the temperature of food, normally adopt infrared temperature sensor (IR Sensor) to be captured in the temperature of food in curing range heated chamber at present.It should be noted that, each object (as food) constantly space radiation towards periphery can go out infrared ray, the object that temperature is high, high to extraradial infra-red intensity, the infra-red intensity that infrared temperature sensor can give off by receiving object knows the temperature that object has.
But, food containing large quantity of moisture owing to needing food, in the process that curing range heats food, along with the continuous rising of food temperature, easily give out a large amount of water vapour, form high humidity environment, in view of water vapour easily absorbs infrared ray, water vapour is more, water vapour more can assimilate food the infra-red intensity of institute's radiation, make like this under the impact of water vapour, infrared temperature sensor receive the infra-red intensity that the food that detects gives off and be greatly affected, the object temperature exported due to infrared temperature sensor and this infrared temperature sensor to detect the object infra-red intensity of acquisition proportional, therefore the food temperature that infrared temperature sensor exports is the food temperature after being subject to water vapour impact, and there is very large deviation between real food temperature, therefore when food is under the high humidity environment containing a large amount of water vapour, the existing curing range comprising above-mentioned micro-wave oven all cannot carry out preparation by infrared temperature sensor to the temperature of food and detect, temperature value accurately cannot be exported, thus the heating progress of food cannot be known.
Summary of the invention
In view of this, the object of this invention is to provide a kind of roaster obtaining actual temperature of food under high humidity environment, under its high humidity environment that can be formed water vapour infrared temperature sensor receive the food infra-red intensity detected and compensate, overcome water vapour on infrared temperature sensor receive the impact of the food infra-red intensity numerical value of detection, thus export actual food temperature value accurately, know the heating progress of food, to control the carrying out practically of miscellaneous part in curing range, the product use sense enhancing user is subject to, be of great practical significance.
For this reason, the invention provides a kind of roaster improving infrared sensor precision under high humidity environment, include device case 1, described device case 1 is provided with the first infrared temperature sensor 21, the bottom of described device case 1 is provided with pallet 3, described pallet 3 is waited to roast barbi for placing, and the distance between described first infrared temperature sensor 21 and the center of pallet 3 is D2;
Described device case 1 is provided with the second infrared temperature sensor 22, described device case 1 is provided with infrared radiation source 4, the distance between described second infrared temperature sensor 22 and described infrared radiation source 4 is D1; Described roaster also includes microprocessor MPU, and for when heating food, obtain the actual temperature value Y of food according to the temperature compensation formulae discovery of food and inform user, described temperature compensation formula is:
wherein, X is the curing range temperature maximum that the second infrared temperature sensor 22 exports when not heating, x is the curing range infrared radiation source temperature value that the second infrared temperature sensor 22 exports when heating, and y is the curing range food temperature value that the first infrared temperature sensor 21 exports 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.
From above technical scheme provided by the invention, compared with prior art, the present invention proposes a kind of roaster obtaining actual temperature of food under high humidity environment, under its high humidity environment that can be formed water vapour infrared temperature sensor receive the food infra-red intensity detected and compensate, overcome water vapour on infrared temperature sensor receive the impact of the food infra-red intensity numerical value of detection, thus export actual food temperature value accurately, know the heating progress of food, to control the carrying out practically of miscellaneous part in curing range, the product use sense enhancing user is subject to, be of great practical significance.
Accompanying drawing explanation
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 obtaining the roaster of actual temperature of food 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, below in conjunction with drawings and embodiments, the present invention is described in further detail.
Fig. 2 is a kind of structural representation obtaining the roaster of actual temperature of food under high humidity environment provided by the invention.
See Fig. 2, the invention provides a kind of roaster obtaining actual temperature of food under high humidity environment, this roaster includes device case 1, the top of described device case 1 is provided with the first infrared temperature sensor 21, the bottom of described device case 1 is provided with pallet 3, described pallet 3 is waited to roast barbi for placing, distance between described first infrared temperature sensor 21 and the center of pallet 3 is D2, described first infrared temperature sensor 21 is positioned at for detecting the infra-red intensity and the temperature value of display translation food that on described pallet 3, food gives off,
In the present invention, described roaster be comprise baking box, micro-wave oven there is the multiple device baking function;
The left side wall of described device case 1 is provided with the second infrared temperature sensor 22, the right side wall of described device case 1 is provided with infrared radiation source 4, distance between described second infrared temperature sensor 22 and described infrared radiation source 4 is D1, and described second infrared temperature sensor 22 exports the temperature value of infrared radiation source 4 for the infra-red intensity that detects described infrared radiation source 4 and give off;
In specific implementation, described infrared radiation source 4 is preferably the bulb of a heating;
It should be noted that, due in the process that heats food at curing range, along with the continuous rising of food temperature, easily give out a large amount of water vapour, form high humidity environment, in view of water vapour easily absorbs infrared ray, water vapour is more, water vapour more can assimilate food the infra-red intensity of institute's radiation, 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 detect the infra-red intensity that gives off of food and the concentration of water vapour and the distance dependent system between this first infrared sensor 21 and food that obtain, be subject to the impact of the concentration of water vapour and the spacing of this first infrared sensor 21 and food, here it should be noted that, infrared temperature sensor detect acquisition the infra-red intensity that gives off of object and the temperature of its display translation proportional.
When not heating in described curing range, there is not the water vapour because heat food is formed in described curing range, thus can not the infra-red intensity that infrared radiation source 4 gives off be impacted, so open infrared radiation source 4, the infra-red intensity that gives off of infrared radiation source 4 that described second infrared temperature sensor 22 obtains according to detection and the corresponding infrared radiation source temperature maximum exported is X;
When being placed with food in described baked goods and carrying out heating operation, open infrared radiation source 4 simultaneously, food gives out water vapour, at this moment the second infrared temperature sensor 22 obtains according to detection infrared radiation source 4 gives off under water vapour condition infra-red intensity and the corresponding infrared radiation source temperature value exported is x, and the infra-red intensity that on the pallet 3 obtained according to detection by the first infrared temperature sensor 21, food gives off and the corresponding food temperature value exported is y;
As mentioned above, because water vapour easily absorbs infrared ray, water vapour easily has influence on the infra-red intensity numerical value that Food Radiation that infrared temperature sensor detects goes out, so the infra-red intensity that on the pallet 3 that obtains according to detection of the first infrared temperature sensor 21, food gives off and the corresponding temperature value y exported is not the actual temperature value Y that food has.
It should be noted that, under identical water vapor, the loss of strength rate of infrared ray in unit distance is identical, as previously mentioned, in view of infrared temperature sensor detect acquisition the infra-red intensity that gives off of object and the temperature of its display translation proportional, ratio between temperature value and infra-red intensity value is a constant, and therefore, the loss percentage of the infrared ray that food gives off after the heating in unit distance is:
the loss percentage of the infrared ray that infrared radiation source 4 gives off in unit distance is:
therefore,
thus the actual temperature value that described food has can be drawn
this formula is the temperature compensation formula of food.
Such as, when D1=390mm (millimeter), when D2=260mm, X=80 spend, the actual temperature value that described food has
therefore, according to the first infrared temperature sensor 21 and the second infrared temperature sensor 22 respectively the infrared radiation source temperature value x of display translation and food temperature value y namely can draw the actual temperature Y that food has.
Based on above-mentioned principle, in order to the temperature value exported infrared temperature sensor compensates, the final food temperature obtaining reality, roaster provided by the invention also includes microprocessor MPU, this microprocessor is used for when heating food, obtain the actual temperature value Y of food according to the temperature compensation formulae discovery of food and inform user, described temperature compensation formula is:
wherein, X is the curing range infrared radiation source temperature maximum that the second infrared temperature sensor 22 exports when not heating, x is the curing range infrared radiation source temperature value that the second infrared temperature sensor 22 exports when heating, and y is the curing range food temperature value that the first infrared temperature sensor 21 exports when heating.
In sum, compared with prior art, the invention provides a kind of roaster obtaining actual temperature of food under high humidity environment, under its high humidity environment that can be formed water vapour infrared temperature sensor receive the food infra-red intensity detected and compensate, overcome water vapour on infrared temperature sensor receive the impact of the food infra-red intensity numerical value of detection, thus export actual food temperature value accurately, know the heating progress of food, to control the carrying out practically of miscellaneous part in curing range, the product use sense enhancing user is subject to, be of great practical significance.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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. one kind is improved the roaster of infrared sensor precision under high humidity environment, it is characterized in that, include device case (1), described device case (1) is provided with the first infrared temperature sensor (21), the bottom of described device case (1) is provided with pallet (3), described pallet (3) is waited to roast barbi for placing, and the distance between described first infrared temperature sensor (21) and the center of pallet (3) is D2;
Described device case (1) is provided with the second infrared temperature sensor (22), described device case (1) is provided with infrared radiation source (4), the distance between described second infrared temperature sensor (22) and described infrared radiation source (4) is D1;
Described roaster also includes microprocessor, and for when heating food, obtain the actual temperature value Y of food according to the temperature compensation formulae discovery of food and inform user, described temperature compensation formula is:
wherein, X is the curing range temperature maximum that the second infrared temperature sensor (22) exports when not heating, x is the curing range infrared radiation source temperature value that the second infrared temperature sensor (22) exports when heating, and y is the curing range food temperature value that the first infrared temperature sensor (21) exports 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, it 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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN102052969A CN102052969A (en) | 2011-05-11 |
| CN102052969B true CN102052969B (en) | 2014-12-24 |
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| CN200910071026.4A Expired - Fee Related 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN109579999B (en) * | 2017-09-29 | 2020-12-15 | 青岛海尔特种电冰柜有限公司 | Infrared sensor detection temperature calibration method and system and refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120148A (en) * | 1994-06-11 | 1996-04-10 | Lg电子株式会社 | Microwave oven |
| CN1128851A (en) * | 1994-10-27 | 1996-08-14 | Lg电子株式会社 | Cooking arrangement with infrared sensor |
| CN1310314A (en) * | 2000-02-22 | 2001-08-29 | 东芝株式会社 | Heating mess kit |
| CN101162171A (en) * | 2007-11-28 | 2008-04-16 | 重庆大学 | Method for measuring surface temperature of high-temperature casting billet within water fog medium |
-
2009
- 2009-10-29 CN CN200910071026.4A patent/CN102052969B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120148A (en) * | 1994-06-11 | 1996-04-10 | Lg电子株式会社 | Microwave oven |
| CN1128851A (en) * | 1994-10-27 | 1996-08-14 | Lg电子株式会社 | Cooking arrangement with infrared sensor |
| CN1310314A (en) * | 2000-02-22 | 2001-08-29 | 东芝株式会社 | Heating mess kit |
| CN101162171A (en) * | 2007-11-28 | 2008-04-16 | 重庆大学 | Method for measuring surface temperature of high-temperature casting billet within water fog medium |
Non-Patent Citations (2)
| Title |
|---|
| JP昭59-49427A 1984.03.22 * |
| JP特開平7-217896A 1995.08.18 * |
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Granted publication date: 20141224 Termination date: 20171029 |