JP2013029237A - Heating cooking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooking apparatus including a temperature measuring means which keeps a pyrometer arranged inside an air nozzle for a high-speed spray, sprays air with a high-speed flow velocity from a spray aperture part, prevents ingress of both lamp soot and an oil splash, etc. into the nozzle, and prevents damage and impurity of a light receiving part of the pyrometer, thereby materializing accurate temperature measurement ranging over a long period.SOLUTION: This heating cooking apparatus adopts the following means: first, a body casing includes a heating means and a temperature measuring means; second, a temperature of food to be heated is measured by the pyrometer, and temperature control is carried out while heating cooking is carried out; third, the air nozzle formed to be tapering for the high-speed spray is connected to an air duct connected to a ventilator; fourth, the air nozzle is positioned obliquely upwardly except for the upper part perpendicular to cooking appliances, and also the spray aperture part is opposed to food to be heated; and fifth, the pyrometer is disposed inside the air nozzle so that the light receiving part heads for the food to be heated from the spray aperture part of the air nozzle.

Description

  The present invention relates to a cooking device, and more specifically, a cooking device that measures the temperature of a food to be heated in a cooking device using a temperature measuring means including a radiation thermometer and performs cooking while controlling the temperature. About.

  When cooking using a cooking device, there is a case where it is necessary to cook while maintaining a constant temperature. For example, when frying tempura, it is necessary to keep the temperature of tempura oil at a set temperature (180 ° C.). In particular, in the food and beverage industry that requires a large amount of cooking, in order to keep the quality of cooking constant, it is necessary to measure the temperature of the food to be heated and perform cooking while maintaining the required temperature.

  Therefore, measuring the temperature of food to be heated has been conventionally performed. Conventionally, there are a contact type and a non-contact type for measuring the temperature of food to be heated. As an example of the contact type, there is an example in which a contact type thermometer such as a thermocouple or a thermistor is attached to the heating means or the vicinity thereof. In this case, the temperature of the food to be heated is indirectly detected via the heating means and its installation stand, and it is difficult to accurately measure the temperature of the food to be heated.

  In addition, it is conceivable that a person who cooks directly contacts a food to be heated with a contact-type thermometer and measures the temperature. However, when a large amount of cooking is performed as a business, it is not preferable from the viewpoint of work efficiency. It was.

  Therefore, there has been considered a means for directly measuring the temperature of the heated food by installing an infrared sensor or the like, which is a non-contact type thermometer, above the heated food without using a contact-type thermometer. However, if an infrared sensor or the like is installed above the food to be heated, it may interfere with the operation of the cooking device (for example, a wok), damage the infrared sensor, and dirt on the infrared sensor, particularly light reception. As a result, it was difficult to accurately measure the temperature.

  Radiation thermometers such as infrared sensors receive infrared and visible light emitted from heated food at the light receiving part and measure its temperature. Intensity measurement is distorted, making accurate temperature measurement impossible.

  For this reason, as shown in Patent Document 1, when using a non-contact type infrared sensor to measure the temperature of the food to be heated, the infrared sensor does not interfere with the operation of the cooking device, and the infrared sensor receives light. A cooking device having a structure for preventing the soiling of the part is provided.

  In Patent Document 1, it has been proposed that an air nozzle for preventing contamination of the light receiving portion due to oil smoke or the like is provided in the vicinity of the light receiving portion of the infrared sensor. The air nozzle of Patent Document 1 blows air directly on the light receiving part, or closes the opening through which the infrared rays radiated from the food to be heated pass through the light receiving part with an air curtain by blowing air from the lateral direction. It is intended to prevent oil smoke and the like from entering from the opening, and to prevent the light receiving part from being soiled.

  However, the light receiving part of the infrared sensor shown in Patent Document 1 is installed above the food to be heated. For this reason, it is easy to receive not only oil smoke but also a direct hit of an object jumping up from the food to be heated. In addition, air can be blown directly onto the light receiving part or the opening near the light receiving part can be closed with an air curtain from the side, so that entry of fine and light oily smoke can be prevented. It is not possible to prevent the entry of an object jumping in the direction of the light receiving unit from the object, for example, an object having a constant weight such as oil splash. Furthermore, oil smoke and oil splashes that have passed through the opening could not be discharged.

Japanese Patent Laid-Open No. 2003-249336

  In the temperature measuring means, the radiation thermometer in which the light receiving portion is directed in the direction of the food to be heated is arranged inside the air nozzle for high-speed injection, and air having a high flow velocity is discharged from the injection opening of the air nozzle. It is possible to inject, and not only the oil smoke but also an object with a certain weight (for example, oil splash) does not enter the air nozzle, and the light receiving part of the radiation thermometer is prevented from being damaged or dirty. Accordingly, it is an object of the present invention to provide a cooking device provided with a temperature measuring means that can realize accurate temperature measurement over a long period of time.

In order to solve the above-mentioned problems, the first invention employs the following means in the cooking device.
First, the main body casing is provided with heating means and temperature measurement means.
Secondly, the food to be heated in the cooking device is heated by the heating means, and the temperature of the food to be heated in the cooking device is measured by the temperature measuring means including a radiation thermometer, and heated while controlling the temperature. A cooking device for cooking is used.

Third, the temperature measuring means connects an air nozzle having a tip tapered for high-speed injection to an air duct connected to a blower.
4thly, the said air nozzle is located in the diagonally upper direction which removed the perpendicular | vertical upper direction of the heating cooking appliance, and an injection opening part is made to oppose the to-be-heated food in a heating cooking appliance.
Fifthly, a radiation thermometer was arranged inside the air nozzle so that the light receiving part thereof was directed to the heated food in the cooking device from the injection opening of the air nozzle.

The second invention is a cooking device in which the following means are added to the first invention.
First, the main body casing is composed of a table having a heating means arrangement opening at the center and an inner hollow inner wall standing on the inner edge of the table.
Secondly, an air duct of the temperature measuring means is disposed through the interior of the back wall.

3rd invention is the heat cooking apparatus which added the following means to 1st invention.
First, the main body casing includes a table having an opening for heating means arrangement in the center of the upper surface, an exhaust space below the heating means arrangement position of the table, and an internal hollow that stands on the back edge of the table. Provide a back wall.
Secondly, the exhaust space and the hollow interior of the back wall are connected to form an exhaust passage.
Third, the air duct of the temperature measuring means is disposed in the exhaust passage.

  The present invention injects air at a high flow velocity from the air nozzle injection opening toward the food to be heated, and oil smoke or an object having a certain weight (for example, oil splashing) inside the air nozzle in which the light receiving portion exists. ) Has become a cooking device that can prevent the intrusion.

  Furthermore, in the present invention, since the radiation thermometer is arranged inside the air nozzle, the air near the light receiving portion of the radiation thermometer moves at a high speed, so that the oil smoke or oil splash that has entered the air nozzle is removed. It became a cooking device that can be discharged outside the nozzle.

  In addition, since the air nozzle in which the radiation thermometer according to the present invention is arranged is positioned obliquely above the vertical upper side of the cooking device, the possibility of oil smoke or oil splash entering the air nozzle may be reduced. In addition, the handling of the cooking device on the cooking device is not inconvenient.

  As described above, by preventing contamination and damage to the light receiving part of the radiation thermometer, it is possible to realize accurate temperature measurement over a long period of time and to save the maintenance cost of the radiation thermometer. It became a cooking device.

  Although it is an effect of 2nd invention, by making the air duct of a temperature measurement means penetrate and arrange | positioned in the back wall standingly arranged in the back edge of the main body casing, it can aim at size reduction of a heating cooking apparatus. did it.

  As an effect of the third invention, the exhaust space is connected to the hollow interior of the back wall to form an exhaust passage, and the air duct of the temperature measuring means is disposed in the exhaust passage, so that the exhaust passage Air heated by the air duct located inside can be injected from the injection opening, and the food to be heated is not affected by the injection air.

Cross-sectional explanatory drawing of the heating cooking apparatus which shows one Example of this invention Cross-sectional explanatory drawing near the air nozzle

Hereinafter, embodiments of the present invention will be described together with examples according to the drawings.
FIG. 1 is a cross-sectional explanatory view showing an outline of a cooking device, in which 1 is a cooking device for Chinese food, and the cooking device 1 for Chinese food includes a main body casing 2 having a table 3 and a table. 3 has a hollow inner wall 4 that is erected on the rear edge, and is provided with heating means, temperature measuring means, heating temperature setting means, and heating control means. In addition, the code | symbol 5 in FIG. 1 is the wok which is a heating cooking appliance placed above the heating means.

  An opening 21 for arranging the heating means is opened in the center of the table 3, and the heating means is provided in the opening 21. The heating means in the embodiment uses electromagnetic induction heating. Reference numeral 6 in FIG. 1 is a heating top plate. In the embodiment, electromagnetic induction heating is used as the heating means, but the invention is not limited to this, and gas heating may be used.

  The heating top plate 6 is formed with a recess for receiving the bottom of the wok 5 and is disposed on the upper surface of the main casing 2 and is made of a crystal glass plate or a ceramic plate. A heating coil (not shown) that generates a high-frequency magnetic field is disposed on the rear surface side portion of the heating top plate 6, and the output of the heating coil is set by the heating temperature setting means and is controlled by the heating control means. It is controlled. That is, by energizing the heating coil to generate a high-frequency magnetic field, an eddy current is generated inside the wok 5 to cause the wok 5 to self-heat, thereby heating the food in the wok 5 serving as a cooking device. Is heated.

  An inner casing 22 is provided below the opening 21 (as a result, below the heating means arrangement position of the table 3). The inner casing 22 has a flat rectangular parallelepiped shape with an open upper surface, is made of a nonmagnetic material (for example, aluminum), and blocks electromagnetic waves emitted from the heating coil. A fan 23 for cooling the heating coil is attached below the inner casing 22.

   The exhaust port of the fan 23 passes through the exhaust space 25 in the inner casing 22 from the lower surface of the inner casing 22. An exhaust passage 41 is formed in a hollow area inside the back wall 4. A communication hole 24 communicating with the exhaust passage 41 in the back wall 4 is opened on the back side of the inner casing 22. When the fan 23 is operated, the blown air is exhausted from the exhaust space 25 in the inner casing 22 through the exhaust passage 41 on the back wall 4 through the communication hole 24 on the back side.

  The temperature measuring means is a means for measuring the heating temperature of the heated food in the wok 5 in a non-contact manner, and the temperature measuring means includes an axial fan 7 as a blower disposed on the bottom surface of the main body casing 2, and a shaft An air duct 8 connected to the flow fan 7, an air nozzle 9 whose tip connected to the upper end of the air duct 8 is tapered for high-speed injection, and a radiation thermometer installed inside the air nozzle 9 An example is an infrared radiation thermometer 10).

  The air duct 8 passes through an exhaust passage 41 formed in the main body casing 2 and in the hollow interior of the back wall 4, and the upper end of the air duct 8 protrudes from the upper end of the back wall 4 and is obliquely removed from the vertical upper side of the wok 5. Located above. Since the air nozzle 9 is connected to the upper end of the air duct 8, the air nozzle 9 is positioned obliquely above the vertical upper side of the wok 5. The spray opening 11 is opposed to the heated food in the wok 5. As a result, the light receiving portion 12 of the infrared radiation thermometer 10 installed in the air nozzle 9 is directed toward the food to be heated in the wok 5 from the spray opening 11 of the air nozzle 9. In the embodiment, the radiation angle to the food to be heated is set to 40 degrees.

Hereinafter, the operation of the temperature measuring means will be described.
Air generated by the axial fan 7 is sent to the air duct 8. The air in the air duct 8 is sent upward as indicated by the arrows in the air duct 8 of FIG. The air is warmed by the high-temperature exhaust air moving in the exhaust passage 41 when passing through the air duct 8 located in the exhaust passage 41.

  The air in the air duct 8 is sent into the air nozzle 9. Since the tip of the air nozzle 9 is tapered for high-speed injection, high-speed air is injected from the injection opening 11 of the air nozzle 9. This prevents oil smoke and oil splash from entering the air nozzle 9. Furthermore, since the infrared radiation thermometer 10 is installed in the shape and the inside of the air nozzle 9, the air movement in the air nozzle 9 is at a high speed, and oil smoke or oil splashes have entered from the injection opening 11. Can also be discharged.

  The spray opening 11 of the air nozzle 9 faces the food to be heated in the wok 5 so that the sprayed air is directed to the food to be heated, but the air normally sprayed from the air nozzle 9 is so strong. Although it is not a thing and it does not mean that it is warming intentionally, since it is warmed by the high temperature exhaust air of the exhaust passage 41, there is no influence of the jet air on the food to be heated.

  The infrared radiation thermometer 10 installed inside the air nozzle 9 detects the intensity of infrared rays radiated from the food to be heated, since the light receiving part 12 is directed from the injection opening 11 toward the food to be heated. Measure the temperature of the food.

  The heating control means stores a program for executing heating by controlling an inverter circuit that supplies a high-frequency current to the heating coil. The temperature measured by the infrared radiation thermometer 10 that measures the temperature of the food to be heated and the heating temperature set by the heating temperature setting means are transmitted and controlled based on these information. Specifically, when the temperature of the food to be heated measured by the infrared radiation thermometer 10 reaches the set temperature set in the heating temperature setting means, the output of the heating coil is turned off, and when the temperature falls below the set temperature, the heating coil Is turned on to ensure a certain set temperature accurately and efficiently.

DESCRIPTION OF SYMBOLS 1 ...... Cooking device for Chinese food 2 ... ・ ・ ・ ・ ・ Main body casing 3 ... ・ ・ ・ ・ ・ Table 4 ... ・ ・ ・ ・ ・ Back wall 5 ...・ ・ ・ ・ ・ Chinese pan 6 ・ ・ ・ ・ ・ ・ ・ ・ Top plate for heating 7 ・ ・ ・ ・ ・ ・ ・ ・ Axial fan 8 ・ ・ ・ ・ ・ ・ ・ ・ Air duct 9 ・ ・ ・ ・ ・ ・··· Air nozzle 10 ········· Infrared radiation thermometer 11 ······································································ .... Inner casing 23 ..... Fan 24 ..... Communication hole 25 ..... Exhaust space 41 ..... Exhaust passage

Claims (3)

The body casing is provided with heating means and temperature measurement means,
Heating the food to be heated in the cooking utensil with the heating means, measuring the temperature of the food to be heated in the cooking utensil with a temperature measuring means comprising a radiation thermometer, and performing heating cooking while controlling the temperature In cooking equipment,
The temperature measurement means
Connect the air nozzle whose tip is tapered for high speed injection to the air duct connected to the blower,
The air nozzle is positioned obliquely above the vertical upper side of the cooking device and the spray opening is opposed to the food to be heated in the cooking device,
A cooking apparatus characterized in that a radiation thermometer is arranged inside the air nozzle so that a light receiving portion thereof is directed to a food to be heated in a cooking device from an injection opening of the air nozzle.   The main body casing is composed of a table having an opening for heating means arrangement in the center portion and an inner hollow inner wall standing upright at the inner edge of the table, and an air duct of the temperature measuring means extends inside the inner wall. The cooking device according to claim 1, wherein the cooking device is disposed so as to penetrate therethrough.   The main body casing includes a table having an opening for heating means arrangement at the center of the upper surface, an exhaust space below the heating means arrangement position of the table, and an inner hollow inner wall standing on the back edge of the table. 2. The cooking apparatus according to claim 1, wherein the exhaust space is connected to a hollow interior of the back wall to form an exhaust passage, and an air duct of the temperature measuring means is disposed in the exhaust passage. .

Images