JP2003302052A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooker usable for business and settable to a mode for use in a general family. <P>SOLUTION: This cooker performs cooking of cooked matter by a high thermal power capable of coping with business. The cooker comprises a thermal power control means for controlling a thermal power to a standard thermal power coping with the family and a standard thermal power set means for setting the standard thermal power. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker for heating an object to be cooked placed in a heating chamber.

[0002]

2. Description of the Related Art Conventionally, a heating cooker, such as a convection oven or a hot air impact type oven, which heats and cooks an object to be cooked by forming a high-temperature circulating air flow in a heating chamber containing the object to be cooked is well known. Used and used. Above all, a heating cooker of a hot air circulation system using a plurality of air blowing paths has been proposed. This is, for example, Japanese Patent Application No. 2 related to the applicant's application.
No. 001-32291, the heating means for heating the food to be cooked in the heating chamber and the blowing means for introducing the hot air of the heating means into the heating chamber are controlled by the control means, and a plurality of blowing paths are provided. Depending on the selection and combination, a plurality of different hot air circulation type cooking methods are used.

Further, for example, it is described in Japanese Patent Application No. 2001-400793, which is also filed by the present applicant, in which a hot air outlet and a hot air inlet are provided in a heating chamber to form a high-temperature circulating air flow. In a heating cooker that heats and cooks an object to be cooked, an upper outlet is provided on the ceiling wall of the heating chamber, and a horizontal outlet is provided on any of the inner walls that form the four circumferences of the heating chamber. While providing a suction port on any inner wall other than the inner wall provided with a side air outlet,
The upper air outlet is arranged so that the air flow blown from the upper air outlet does not deflect downward the air flow from the lateral air outlet to the object to be cooked.

In the above-described hot-air circulation type heating cooker with a plurality of air-blowing paths, the hot air coming out from the upper outlet is
It is mainly sprayed on the upper surface of the object to be cooked, heated on the upper surface, and then sucked into the suction port. On the other hand, the hot air discharged from the horizontal outlet mainly blows on the side surface of the object to be cooked to heat the side surface, and further traverses the lower surface of the object to be cooked, thereby heating the lower surface. With this configuration, high-temperature, high-speed hot air is applied to the food to be efficiently transferred to efficiently heat the surface of the food. Furthermore, by selectively enabling the upper and horizontal directions as the main blowing direction of high-speed hot air, a heating cooker suitable for heating a wide range of foodstuffs is provided.

[0005]

However, the heating cooker having the above-mentioned structure heats and cooks with a high thermal power that can be used for business purposes, but it is not widely recognized in general households. Absent. Therefore, heating conditions such as those shown in so-called packaged foods, such as commercially available frozen foods and retort foods, and heating conditions such as those described in cookbooks are conventional microwave ovens and electric ovens for home use, etc. It corresponds to. For this reason, when the heating cooker having the above-mentioned configuration is heated under the heating conditions suitable for household use, there is a problem that the heating quality becomes excessive and the finished quality is significantly deteriorated.

Therefore, in order to prevent such a problem from occurring, for example, the user may change the heating condition so as to correspond to the heating cooker having the above-mentioned configuration.
However, general household users have little understanding of the characteristics themselves of such a cooking device, and there are a wide variety of foods to be heated, so it is difficult to set appropriate heating conditions.

In view of the above problems, it is an object of the present invention to provide a heating cooker which can be used for business purposes and which can be set in a mode so that it can be used at home. And

[0008]

In order to achieve the above object, in the present invention, in a heating cooker for heating an object to be cooked with a high heating power that can be used for business purposes, a standard heating power for household use is used. Further, it is characterized in that it comprises a heat power adjusting means for adjusting the heat power and a standard heat power setting means for setting the standard heat power. In addition, a hot air outlet and a suction port are provided in the heating chamber to form a high-temperature circulating airflow, and the circulating airflow heats and cooks the object to be cooked.

Further, an upper outlet is provided on the ceiling wall of the heating chamber, a lateral outlet is provided on any of the side walls forming the four circumferences of the heating chamber, and any side other than the side wall having the lateral outlet is provided. In a heating cooker having a side wall provided with a suction port, when the standard thermal power is set, the hot air from the upper outlet is blocked or reduced, and the hot air from the lateral outlet is of the standard thermal power. .

Further, the present invention is characterized in that a control unit for performing preheating performed before main heating in cooking with high heat power is provided. Further, a control unit for performing main heating after the preliminary heating with the standard heating power is provided. Further, it is characterized in that the control unit performs a thermal power adjustment for lowering the temperature of the hot air blown during the preheating to the temperature of the hot air blown during the main heating in a short time.

Further, it has a heat source and a fan for generating hot air, and a damper for adjusting the air volume of the hot air, and the heat generation amount and the fan are adjusted by adjusting the output of the heat source, adjusting the rotation speed of the blowing fan, or opening and closing the damper. Alternatively, the amount of airflow is reduced to adjust the heat power.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a heating cooker according to an embodiment of the present invention. As shown in the figure, the heating cooker 1 of the present embodiment includes a rectangular parallelepiped cabinet 10. Inside the cabinet 10, a rectangular parallelepiped heating chamber 11 is provided. The upper and lower sides of the heating chamber 11 are composed of a ceiling wall 12 and a bottom wall 13, and three sides of the four circumferences are a back inner side wall 14 and a left inner side wall 1.
5, and the inner wall 16 on the right side. The other one of the four circumferences is configured by a heat insulating door 17 that can be opened and closed. It should be noted that each wall other than the door is also insulated.

Further, a blower device 2 is provided outside the inner side wall 14.
0 is set. The blower device 20 has a centrifugal fan 22 arranged in a fan casing 21, and the centrifugal fan 22 is normally and reversely rotated by a reversible rotation motor (not shown). The fan casing 21 is a two-way branch type, and has an upper discharge port 23 and a horizontal discharge port 24. The upper discharge port 23 is connected to an upper duct 25 provided outside the ceiling wall 12, and the lateral discharge port 24 is connected to a lateral duct 26 provided outside the left inner side wall 15. further,
The upper duct 25 and the lateral duct 26 are respectively provided in the heating chamber 11
It has an upper air outlet 30 and a side air outlet 31 that open toward. Further, a suction port 32 of the blower 20 is provided on the inner side wall 14.

An upper heater is arranged in the upper duct 25, and a horizontal heater is arranged in the horizontal duct 26. Further, on the outside of the right inner wall 16, a dielectric heating device that assists heating by the upper heater and the lateral heater, and a control unit that controls the operation of the entire heating cooker 1 are arranged (all not shown). On the outer front surface of the right inner wall 16,
An operation panel 44 for inputting instructions to the control unit is provided. Further, on the bottom wall 13, a turntable 50 for placing an object to be cooked is arranged. Depending on the type of food to be cooked, a grill or 2 is provided on the turntable 50.
A supporting means such as a corrugated grill is placed.

FIG. 2 is a block diagram showing the control system of the heating cooker according to the present embodiment. In the figure, 2 is a heat source such as the upper heater and the lower heater, 4 is a heating type instructing means for instructing the type of heating, and 5 is a switch of the air flow rate ratio of the hot air blown out from the upper outlet 30 and the side outlet 31. It is an air volume ratio switching means. Further, 7 is a heating condition storing means for storing a heating condition corresponding to the heating type instructing means 4, 8 is a blower unit including a fan for generating a circulating air flow and a motor for driving the fan, and 9 is a heating condition storing means 7. The control unit controls heating based on the stored conditions and also controls switching of the air volume ratio.

As shown in the figure, the control unit 9 has a heat source 2,
The heating type instructing means 4, the air volume ratio switching means 5, and the heating condition storage means 7 are connected, and the air volume ratio switching means 5 is connected to the blower unit 8. The air volume ratio switching means 5 specifically corresponds to forward / reverse rotation of the centrifugal fan 22 and opening / closing of a damper (not shown) provided in each duct or the like. The blower unit 8 corresponds to the blower device 20. The heating type indicating means 4 is arranged on the operation panel 44, for example. further,
The heating condition storage unit 7 and the control unit 9 are arranged, for example, outside the right inner wall 16 described above.

FIG. 3 is a flow chart for executing the heating and cooking process in the present embodiment, and shows an example when the standard heating mode is instructed. In the figure, when the heating and cooking process starts, first, in step S001, an instruction to reduce the heating power is given. This is performed, for example, by the user operating a key on the operation panel 44. Here, the heating type instructing means 4 instructs the standard thermal power mode in which the high thermal power at the commercial level is reduced to the standard thermal power for home use. At this time, the heating type instructing means 4 works as a standard thermal power setting means for setting the standard thermal power.

Subsequently, in step S002, the heating time T is input. For this, the user may input a numerical value by operating the keys on the operation panel 44, or for example, by providing a weight sensor connected to a turntable, the weight of the food to be cooked can be directly measured. However, the heating time may be calculated based on this.

Subsequently, in step S003, the heating condition storage means 7 sets the corresponding heating power adjustment means conditions for controlling the heating power reduction. As the heat power adjusting means, the output adjustment of the heat source 2 or the centrifugal fan 2 is performed.
2 rotation speed adjustment, or provided in each of the above ducts,
The opening and closing of a damper (not shown) that adjusts the volume of hot air corresponds to this. Here, the hot air from the upper air outlet 30 is blocked or reduced, and the hot air from the side air outlet 31 is made to have a standard thermal power.

Subsequently, when heating is started in step S004, the reduction of the thermal power is set in step S005, and the heating time TC is counted up in step S006. Then, step S007
In, when TC = T and the heating time elapses, the heating ends in step S008, and the heating and cooking process ends.

FIG. 4 is a flow chart for executing the heating and cooking process in this embodiment, and shows an example in which the main heating is performed after preheating (preheating). In the figure,
When the heating and cooking process starts, first, step S10.
In 1, the heating type instructing means is input. This is performed, for example, by the user operating a key on the operation panel 44. Here, the heating type instructing means 4 gives an instruction for a preheating mode in which preheating is performed while the high thermal power of the commercial level is maintained.

Subsequently, in step S102, it is determined whether or not a preheat instruction is given, and if the preheat instruction is given, the process proceeds to step S103. In step S103, an instruction for main heating is given and the heating time T is input. Subsequently, when heating is started in step S104, it is determined in step S105 whether or not the preheating instruction has been issued again, and if the preheating instruction has been issued, the process proceeds to step S106.

Preheating is started in step S106. Subsequently, when the preheating is completed in step S107 and the main heating is started in step S108, the reduction of the thermal power (set to the standard thermal power) is set in step S109, and the heating time TC is counted up in step S110. Then, in step S111, when TC = T and the heating time has elapsed, the heating ends in step S112, and the heating and cooking process ends.

If the preheat instruction is not issued in step S102, the process proceeds to step S104.
Further, in step S105, if the preheating instruction is not given, the process proceeds to step S110 to directly perform the main heating. As described above, when the preheating instruction is given, the standard heating power is used for the main heating after the preheating is completed.

FIG. 5 is a graph showing the heating and cooking process in this embodiment, and shows a specific example of the case where main heating is performed after preheating. In the figure, the horizontal axis shows the heating time and the vertical axis shows the heating power. As shown in the figure, first, at the time of preheating, preheating is performed with a high thermal power a of a commercial level, and when the main heating is performed, heating is performed with a thermal power c lower than the standard thermal power b in the previous process. The heating time in the previous step is, for example, about 2 to 3 minutes depending on the set temperature.

When the previous process is completed and the subsequent process is completed, heating is performed with the standard thermal power b. As can be seen from the figure, Pbf> Paf, where Paf is the reduction amount of the thermal power from a to b and Pbf is the reduction amount of the thermal power from a to c. By doing so, the hot air temperature, which was high during preheating, can be returned to the standard temperature in a short time. In addition,
The pre-process may be incorporated into the pre-heating process, and the post-process may be the net main heating process.

[0027]

As described above, according to the present invention,
It is possible to provide a heating cooker that can be used for business purposes and that can be mode-set so that it can be used at home.

Specifically, in a heating cooker that heats and cooks an object to be cooked with a high heat power that can be used for business purposes, the heat power adjusting means that adjusts the heat power to a standard heat power that is suitable for home use, and the standard heat power are used. It is configured to have a standard thermal power setting means for setting. In addition, a hot air outlet and a suction port are provided in the heating chamber to form a high-temperature circulating airflow, and the circulating airflow heats and cooks the object to be cooked.

Further, an upper outlet is provided on the ceiling wall of the heating chamber, a side outlet is provided on any of the side walls forming the four circumferences of the heating chamber, and any side other than the side wall having the side outlet is provided. In the heating cooker having the suction port on the side wall, when the standard thermal power is set, the hot air from the upper outlet is blocked or reduced, and the hot air from the lateral outlet is of the standard thermal power.

With the above-described structure, the standard heating power is set, and the heating conditions as shown in commercially available so-called packaged foods and the heating conditions as described in cookbooks are input, You can easily cook with heat.

In addition, the control section for performing the pre-heating performed before the main heating in the cooking with the high thermal power is provided. As a result, even when cooking with standard heat,
Preheating can be completed in a short time.

A control unit for performing main heating after the preliminary heating with the standard heating power is provided. Generally, since the main cooking is performed with the standard heating power in the heating cooking with the preheating, the above configuration eliminates the need for the user to perform an operation for instructing the heating power adjustment in the main heating, and the convenience is improved.

Further, the control section is configured to adjust the heating power for lowering the temperature of the hot air blown during the preheating to the temperature of the hot air blown during the main heating in a short time. As a result, the hot air temperature at the time of preheating can be switched to the hot air temperature at the time of main heating in a short time, so that it is possible to quickly shift to the main heating at a predetermined temperature, and the specified heating condition (for example, commercially available packaged food The cooking can be performed according to the heating conditions shown in.

Further, it has a heat source and a fan for generating hot air, and a damper for adjusting the air volume of the hot air. The heat generation amount and the fan are adjusted by adjusting the output of the heat source, adjusting the rotation speed of the blowing fan, or opening and closing the damper. Alternatively, the amount of airflow is reduced to adjust the thermal power. Thereby, it becomes possible to adjust the heat power by adjusting the heat generation amount of the heat source or the air amount of the hot air.

[Brief description of drawings]

FIG. 1 is a front view showing a heating cooker according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a control system of the heating cooker according to the present embodiment.

FIG. 3 is a flowchart for executing a heating and cooking process in the present embodiment (when a standard thermal power mode is instructed).

FIG. 4 is a flowchart for executing a heating and cooking process in the present embodiment (when main heating is performed after preheating).

FIG. 5 is a graph showing a heating and cooking step according to the present embodiment (a specific example in which main heating is performed after preheating).

[Explanation of symbols]

1 cooker 2 heat source 4 Heating type instruction means 5 Air volume ratio switching means 7 Heating condition storage means 8 blower unit 9 control unit 10 cabinets 11 heating chamber 12 ceiling wall 13 Bottom wall 14 Inner wall 15 Left inner wall 16 Right inner wall 17 Insulated door 20 air blower 21 fan casing 22 Centrifugal fan 23 Upper discharge port 24 Horizontal discharge port 25 Upper duct 26 Side duct 30 Upper outlet 31 Side outlet 32 Suction port 44 Operation panel 50 turntable

Continued front page    (72) Inventor Yumiko Suetsugu             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company (72) Inventor Mari Terada             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company

Claims (7)

[Claims] 1. A heating cooker that heats and cooks an object to be cooked with high heat power that can be used for business purposes, and a heat power adjusting unit that adjusts the heat power to a standard heat power that is suitable for home use, and a standard that sets the standard heat power. A heating cooker characterized by comprising heat power setting means. 2. The heating cooker according to claim 1, wherein a hot air blowout port and a suction port are provided in the heating chamber to form a high-temperature circulating airflow, and the circulating airflow heats and cooks the object to be cooked. 3. An upper outlet is provided on a ceiling wall of the heating chamber, a side outlet is provided on any of the side walls forming the four circumferences of the heating chamber, and any side other than the side wall having the side outlet is provided. In a heating cooker having a side wall provided with a suction port, when the standard thermal power is set, the hot air from the upper outlet is blocked or reduced, and the hot air from the lateral outlet is of the standard thermal power. The heating cooker according to claim 2. 4. The heating cooker according to any one of claims 1 to 3, further comprising a control unit that performs preheating performed before main heating in cooking with the high heating power. 5. The cooking device according to claim 4, further comprising a control unit for performing main heating after the preheating with the standard heating power. 6. The control unit adjusts the heat power for lowering the temperature of the hot air blown during the preheating to the temperature of the hot air blown during the main heating in a short time.
The cooking device according to. 7. A heat source and a fan that generate hot air, and a damper that adjusts the air volume of the hot air. The heat generation amount and the fan amount are adjusted by adjusting the output of the heat source, adjusting the rotation speed of the blower fan, or opening and closing the damper. Or the heating power is adjusted by reducing the air flow rate, The heating cooker according to any one of claims 1 to 3.