JP5919459B2 - Range food - Google Patents

Description

  The present invention relates to a range hood that changes the air volume of a blower according to the temperature of a cooked product.

  As a range hood for changing the air volume of the blower, in Patent Document 1, the temperature of the intake air is detected by a temperature sensor provided in the hood to control the air volume of the blower.

  Moreover, as a range hood which changes the air volume of a fan, in patent document 2, the temperature of the upper surface of a heating cooker is detected not by the temperature of intake air but by a non-contact type temperature sensor.

Japanese Patent Laid-Open No. 7-280307 Japanese Patent Laid-Open No. 3-91616

  However, according to Patent Document 1, the detection temperature is affected by the intake air amount of the blower and the intake amount of cooking waste air, so the detection accuracy is poor. Also, the temperature sensor may become dirty and the detection sensitivity may decrease.

  According to Patent Document 2, since the entire area of the upper surface of the heating cooker is set as the detection range, the ratio of the non-heat generating portion in the detection range is increased, and the detection accuracy is poor.

  Then, an object of this invention is to provide the range hood which can detect the temperature of a foodstuff accurately.

The range hood of the present invention is a range hood that includes a blower that can change the air volume, and that changes the air volume of the blower according to the temperature of food in the heating cooker, and is a heating unit such as a burner or a heater of the heating cooker An infrared sensor that detects an average temperature of the temperature of the cooked food and the ambient temperature of the cooked food other than the heating unit, a temperature sensor that detects a room temperature, and an air volume control unit that changes the air volume of the blower. The detection range of the sensor is shaped to match the arrangement of the heating unit, and the air volume control unit sets the cooking temperature from the average temperature detected by the infrared sensor, with the indoor temperature as the cooking ambient temperature. It calculates, The air volume of the said air blower is determined from the calculated said cooking material temperature, It is characterized by the above-mentioned.

Further, the hood body to form a suction port on a lower surface provided with a said blower therein, and a hood front portion forming the hood main body of the front side of the suction port, said infrared sensor and said temperature sensor The infrared temperature sensor unit is configured with the infrared temperature sensor unit disposed at the front portion of the hood, and the infrared sensor is disposed at an angle toward the heating unit.

Further , the operation switch case is housed in the front portion of the hood, and the infrared sensor is disposed in the operation switch case.

  ADVANTAGE OF THE INVENTION According to this invention, the precision of the air volume control according to the temperature of a foodstuff can be improved.

  In addition, according to the present invention, it is possible to prevent a decrease in detection sensitivity due to contamination of the temperature sensor.

  Moreover, according to this invention, cost can be reduced and assemblability is also improved.

Front perspective view showing the installed state of the range hood of the present embodiment Cross-sectional side view of the main part showing the installation state of the same range hood 2 is an enlarged cross-sectional view of the main part of FIG. 3 is a bottom view of the main part viewed from the X direction in FIG. The block diagram which represented the range hood of a present Example by the function implementation means The figure for demonstrating the process in the air volume control part of the range hood of a present Example. The flowchart which shows the processing flow in the range hood of a present Example.

  The cooker hood according to the first embodiment of the present invention includes an infrared sensor that detects an average temperature of a food temperature by a heating unit such as a burner or a heater of a heating cooker and a food ambient temperature other than the heating unit; It is equipped with a temperature sensor that detects the temperature and an air volume control unit that changes the air volume of the blower, and the detection range of the infrared sensor has a shape that matches the arrangement of the heating unit. As described above, the food temperature is calculated from the average temperature detected by the infrared sensor, and the air volume of the blower is determined from the calculated food temperature. According to the present embodiment, by calculating the temperature of the heating unit including the cooked product from the average temperature of the upper surface of the heating cooker, not the temperature of the intake air, the detected temperature is the amount of suction air of the blower or the amount of cooking waste air Is not affected by Moreover, since the ratio of the non-heating part occupying the detection range can be reduced, the temperature accuracy of the heating part calculated from the temperature of the non-heating part and the average temperature of the upper surface of the heating cooker detected by the infrared sensor can be increased. . Therefore, the accuracy of air volume control according to the temperature of the food can be improved.

  In the range hood according to the first embodiment, a second embodiment of the present invention forms a hood main body that includes a blower inside and forms a suction port on the lower surface, and a hood main body on the near side of the suction port. The infrared hood temperature sensor unit is composed of an infrared sensor and a temperature sensor, the infrared temperature sensor unit is placed at the front of the hood, and the infrared sensor is tilted toward the heating part. It is. According to the present embodiment, by disposing the infrared temperature sensor unit at a position on the front side of the lower surface of the hood main body and away from the suction port, it becomes difficult for oil smoke generated from the cooked product to directly hit and generated from the cooked product. Dirt due to oil smoke is reduced. Accordingly, it is possible to prevent a decrease in detection sensitivity due to contamination of the infrared temperature sensor unit.

  According to the third embodiment of the present invention, in the range hood according to the first or second embodiment, an operation switch case is housed in the front portion of the hood, and an infrared sensor is disposed in the operation switch case. According to the present embodiment, by arranging the infrared sensor in the operation switch case, it is not necessary to provide a case dedicated to the infrared sensor, and the wiring connecting the infrared sensor and the operation switch can be shortened. Therefore, cost can be reduced and assemblability can be improved.

  Below, the range hood by one Example of this invention is demonstrated.

  FIG. 1 is a front perspective view showing an installation state of the range hood of the present embodiment, FIG. 2 is a cross-sectional side view of the main part showing the installation state of the range hood, FIG. 3 is an enlarged cross-sectional view of the main part of FIG. It is the principal part bottom view seen from the A direction of FIG.

  The range hood 10 of the present embodiment is installed above the heating cooker 20.

  The range hood 10 has a hood main body 13 that includes a blower 11 capable of changing the air volume inside and forms a suction port 12 on a lower surface. The hood main body 13 forms a hood front portion 13 a on the front side of the suction port 12.

  An operation switch case 14 is provided in the hood front portion 13a, an operation switch 14a is provided on the front surface of the operation switch case 14, and an infrared temperature sensor unit 30 and a control board 14b are disposed in the operation switch case 14. ing. The operation switch 14a is attached to the control board 14b.

  A sensor cover 30 a is provided on the lower surface of the infrared temperature sensor unit 30.

  The infrared temperature sensor unit 30 is provided with an infrared sensor 31, and the infrared sensor 31 is inclined to the heating unit side of the heating cooker 20.

  The enlarged view in FIG. 4 shows the opening shape of the detection window 31 a of the infrared sensor 31. Depending on the opening shape of the detection window 31a of the infrared sensor 31, the detection range of the infrared sensor 31 can be made to match the arrangement of the heating unit.

  According to the present embodiment, the infrared temperature sensor unit 30 is disposed in the hood front portion 13a, and the infrared sensor 31 is disposed to be inclined toward the heating portion side. The infrared temperature sensor unit 30 is arranged at a remote position, so that the oily smoke generated from the cooked food is less likely to hit directly, and the contamination due to the oily smoke generated from the cooked food can be reduced.

  In addition, according to the present embodiment, the operation switch case 14 is housed in the hood front portion 13a, and the infrared temperature sensor unit 30 is disposed in the operation switch case 14, so that the case dedicated to the infrared temperature sensor unit 30 can be provided. There is no need to provide it, and the wiring connecting the infrared temperature sensor unit 30 and the operation switch 14a can be shortened.

  FIG. 5 is a block diagram showing the range hood of the present embodiment by function realizing means.

  The infrared temperature sensor unit 30 includes an infrared sensor 31 and a temperature sensor 32.

  The infrared sensor 31 detects an average temperature of the cooked product temperature and the cooked product ambient temperature on the upper surface of the heating cooker 20. The temperature sensor 32 detects the room temperature.

  The range hood 10 includes a signal receiving unit 15 that receives a cooker signal from the heating cooker 20 and an air volume control unit 16 that changes the air volume of the blower 11.

  Moreover, the range hood 10 includes an input / setting unit 17 and a storage unit 18. When the range hood 10 is installed in the input / setting unit 17, the type of the heating cooker 20, such as an electromagnetic heating cooker or a gas, is used. Enter whether it is a cooking stove or enter the installation height of the range hood 10. Data relating to the type of the heating cooker 20 and the height of the range hood 10 input or set by the input / setting unit 17 is stored in the storage unit 18.

  In addition, the storage area 18 stores in advance a food area Sa for determining the food temperature.

  The heating cooker 20 includes a heating unit 21 and a heating power adjusting unit 22 that adjusts the heating power of the heating unit 21.

  Moreover, the cooking device 20 may include a signal transmission unit 23 and a storage unit 24. The signal transmitted from the signal transmission unit 23 is a thermal power signal from the thermal power adjustment unit 22 or the type of the heating cooker 20 stored in advance in the storage unit 24, for example, an electromagnetic heating cooker or a gas heating cooker. It is a signal which distinguishes.

  A signal transmitted from the signal transmission unit 23 is received by the signal reception unit 15.

  In addition, when the signal transmission part 23 and the memory | storage part 24 are provided, the input regarding the kind of the heating cooker 20 from the input and setting part 17 is unnecessary.

  FIG. 6 is a diagram for explaining processing in the air volume control unit of the range hood of this embodiment.

  Fig.6 (a) has shown the upper surface of the heating cooker 20, This heating cooker 20 is provided with the four heating parts 21a, 21b, 21c, and 21d, and the cooking item (pan) 25 is provided in the heating part 21a. It is placed.

  6B and 6C show the detection range A of the infrared sensor 31, FIG. 6B shows a state where the heating unit 21 is not heated, and FIG. 6C shows a case where the heating unit 21a is heated. And the state which the foodstuff 25 is rising to predetermined | prescribed temperature is shown.

  The detection range A includes not only the food 25 but also a range other than the food 25 in the detection range.

  Therefore, the infrared sensor 31 detects the average temperature Tp between the food temperature for the food 25 and the food ambient temperature for objects other than the food 25. The temperature sensor 32 detects the indoor temperature Th.

  In this way, by assuming that the cooked food 25 has a certain size on the heating cooker 20 and the ambient temperature of the cooked food is equal to the indoor temperature Th detected by the temperature sensor 32 (FIG. 6B), The cooked product temperature is calculated from the room temperature Th and the average temperature Tp on the upper surface of the heating cooker 20.

  Note that the shape of the detection range A of the infrared sensor 31 is made to match the arrangement of the heating unit 21 depending on the opening shape of the detection window 31a.

  FIG. 7 is a flowchart showing a processing flow in the range hood of this embodiment.

  Step 1 is performed at the production stage or initial setting of the range hood 10, and the area Sa of the cooked food 25 is preset and stored in the storage unit 18.

  Step 2 is performed when the range hood 10 is installed, and the installation height from the heating cooker 20 to the infrared sensor 31, that is, the installation height h of the range hood 10 is input from the input / setting unit 17. This is because the width of the detection range A changes depending on the installation height h of the range hood 10. The detection range area Sh of the infrared sensor 31 is determined by the installation height h of the range hood 10 (step 3). In addition, it is preferable to memorize | store the detection range area Sh of the infrared sensor 31 linked | related previously in the memory | storage part 18 at the time of the installation height h of the range hood 10 input.

  Step 4 and subsequent steps are performed when the range hood 10 is used.

  When the range hood 10 is used, the infrared sensor 31 detects the average temperature Tp of the food temperature and the food ambient temperature (step 4), and the temperature sensor 32 detects the room temperature Th (step 5).

  When the average temperature Tp and the room temperature Th are detected, the food temperature T is set in the air volume control unit 16 together with the area Sa of the food 25 set in advance in step 1 and the detection range area Sh set in step 3. Is calculated (step 6).

  The cooked product temperature T is calculated, for example, by the ratio between the difference between the average temperature Tp and the room temperature Th and the area Sa of the cooked product 25 with respect to the detection range area Sh.

  The type of the heating cooker 20 in step 7 may be determined when the range hood 10 is installed in step 2 or when the range hood 10 is used.

  When the heating cooker 20 does not include the signal transmission unit 23, the type of the heating cooker 20 is input from the input / setting unit 17 and stored in the storage unit 18 when the range hood 10 is installed in Step 2.

  Moreover, when the heating cooker 20 is provided with the signal transmission part 23, at the time of use of the range hood 10, a cooker signal different in a gas type heating cooker and an electromagnetic heating cooker is transmitted, Whether the type of the heating cooker 20 is a gas heating cooker or an electromagnetic heating cooker is determined according to the type of the received cooker signal.

  Then, in step 8, depending on whether the heating cooker 20 is an electromagnetic heating cooker or a gas heating cooker, the relationship between the cooked product temperature T and the air volume of the blower 11 is changed, for example, the threshold for changing the air volume notch. To change. Specifically, in the case of an electromagnetic heating cooker, the cooking material and pan temperature are the main heat sources, whereas in the case of a gas heating cooker, the cooking material and pan and flame are the main heat sources. By increasing the threshold value for changing the air volume notch of the gas heating cooker with respect to the cooking device, the same air flow control can be performed for similar cooking contents.

  In addition, when a cooker signal capable of discriminating thermal power is transmitted from the heating cooker 20, the thermal power signal transmitted from the heating cooker 20 is received in step 9, and in step 8, this thermal power signal is also received. The relationship between the food temperature T and the air volume of the blower 11 is changed, for example, by changing the threshold value for changing the air volume notch.

  In step 10, the air volume control unit 16 determines the air volume of the blower 11 based on the food temperature T calculated in step 6 and the relationship between the food temperature T changed in step 8 and the air volume of the blower 11. The blower 11 is operated with the flow rate of air.

  In the present embodiment, an infrared sensor 31 that detects an average temperature Tp between the food temperature T by the heating unit 21 such as a burner or a heater of the heating cooker 20 and the ambient temperature of the food other than the heating unit, and the indoor temperature Th are detected. The temperature sensor 32 to be changed and an air volume control unit for changing the air volume of the blower are provided, and the detection range of the infrared sensor 31 is set to a shape matching the arrangement of the heating unit 21. The air volume control unit 16 calculates the food temperature T from the average temperature Tp detected by the infrared sensor 31 using the indoor temperature Th as the food ambient temperature, and determines the air volume of the blower 11 from the calculated food temperature T. Thus, by calculating the temperature of the heating unit 21 including the cooked product from the average temperature Tp on the upper surface of the heating cooker 20 instead of the temperature of the intake air, the detected temperature depends on the intake air amount of the blower 11 and the intake amount of cooking waste air. Not. Moreover, since the ratio of the non-heating part which occupies for the detection range can be reduced, the temperature accuracy of the heating part 21 calculated from the temperature of the non-heating part and the average temperature Tp of the upper surface of the heating cooker 20 detected by the infrared sensor 31 is increased. Can be increased. Therefore, the accuracy of air volume control according to the temperature of the food can be improved.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a range hood that changes the air volume of a blower depending on the temperature of food in a heating cooker.

DESCRIPTION OF SYMBOLS 10 Range hood 11 Blower 12 Air inlet 13 Hood main body 13a Hood front part 14 Operation switch case 14a Operation switch 14b Control board 15 Signal receiving part 16 Air volume control part 17 Input / setting part 18 Memory | storage part 20 Heating cooker 21 Heating part 21a Heating Section 21b Heating section 21c Heating section 21d Heating section 22 Thermal power adjustment section 23 Signal transmission section 24 Storage section 25 Cooked food 30 Infrared type temperature sensor unit 30a Sensor cover 31 Infrared sensor 31a Detection window 32 Temperature sensor

Claims (2)

Equipped with a blower capable of changing the air volume, changing the air volume of the blower according to the temperature of the cooked food in the heating cooker,
An infrared sensor that detects an average temperature of the food temperature by a plurality of heating parts such as a burner and a heater of the heating cooker and the food ambient temperature other than the heating part;
A temperature sensor that detects the room temperature;
An air volume control unit for changing the air volume of the blower,
The detection range of the infrared sensor has a shape that matches the arrangement of the heating unit,
In the air volume control unit,
Using the room temperature as the cooking ambient temperature, calculating the cooking temperature from the average temperature detected by the infrared sensor,
The air volume of the blower is determined from the calculated cooking temperature,
A hood body that includes the blower inside and forms a suction port on the lower surface;
A hood front part that forms the hood body on the near side of the suction port,
The infrared sensor and the temperature sensor constitute an infrared temperature sensor unit,
The infrared type temperature sensor unit is arranged at the front portion of the hood arranged at a position away from the suction port,
The range in which the infrared sensor is inclined to the heating unit side, and the detection range of the infrared sensor is formed in a trapezoidal shape according to the arrangement of the heating unit by the opening shape of the detection window of the infrared sensor. hood. The operation switch case is stored in the front of the hood,
The range hood according to claim 1, wherein the infrared sensor is disposed in the operation switch case.

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