JPH07151333A - Heating and cooking device - Google Patents

Abstract

PURPOSE:To prevent a disturbance in heating in an oven cooking operation by a method wherein a part of hot air generated by a hot air circulating and supplying device is supplied from a ceiling part of the oven into an inside part of the oven through an auxiliary hot air passage and then a grill cooking heater is also electrically energized. CONSTITUTION:Under an oven cooking mode, a hot air heater 25 and a fan motor 27 are electrically energized and a hot air circulating and supplying device 22 is driven and at the same time a heater 18 is intermittently and electrically energized. In this case, a part of hot air generated by the hot air circulating and supplying device 22 is guided by an air directing plate 29, guided within a discharging duct 28 (an auxiliary hot air passage) toward a concave part 17, passes through a punched hole 19a and then is supplied into an inside part 12 of the oven. In this way, a part of the hot air generated by the hot air circulating and supplying device 22 is supplied from the ceiling part of the inside part of the oven 12 into the inside part thereof and at the same time heating with radiation heat of the heater 18 is also carried out. With such an arrangement as above, it is possible to prevent any disturbance in heating operation during an oven cooking operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker provided with a hot air circulating and supplying device for generating hot air by a hot air heater and a hot air fan to circulate the hot air into an oven.

[0002]

2. Description of the Related Art Conventionally, as a cooking device having an oven / grilling function, one shown in FIG. 5 has been provided. That is, in the main body 1 having a rectangular box shape, an oven chamber 2 having a heating chamber inside and opened and closed by a door (not shown) on the front surface is provided. A rotary plate 3 is provided on the inner bottom of the oven cabinet 2, and on the rotary plate 3, oven plates 4 and 4 for supporting an unillustrated food product (such as butter roll dough) are arranged in upper and lower two stages. It is supposed to be placed in.

On the back side of the oven cabinet 2,
A hot air circulation supply device 5 is provided to circulate and supply hot air into the storage. This hot air circulation supply device 5 is configured by arranging a hot air heater 6 and a centrifugal hot air fan 7 inside a casing 5a provided outside the back plate 2a of the oven cabinet 2, and the hot air fan 7 is The fan motor 8 is configured to rotate. When this hot air circulation supply device 5 is driven, as shown by arrow A, the back plate 2a
The air in the refrigerator is sucked into the casing 5a from the suction port 2b, is circulated by being made hot air by the hot air heater 6 and supplied from the supply port 2c of the back plate 2a to the inside of the casing, thereby performing the oven cooking. It is supposed to be done.

A housing recess 9 made of a reflection plate is provided in the ceiling of the oven cabinet 2, and an upper heater 10 is installed in the housing recess 9. With this,
The grill cooking is performed in which the cooked food supported on the upper oven plate 4 (for example, fish placed through a grill) is heated mainly by the radiant heat of the upper heater 10.

[0005]

However, in the above-mentioned prior art, when the oven dishes 4 are arranged in two stages, that is, in the oven cooking, the food to be cooked is heated around the central portion of the upper oven dish 4. It was weaker than the part, and there was a drawback that uneven heating occurred. It is considered that this is because hot air passes relatively quickly through the upper central portion of the oven plate 4 in the upper stage, and the cooked food is not sufficiently heated in this portion.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a heating cooker capable of preventing uneven heating in oven cooking.

[0007]

The cooking device according to the present invention comprises:
An oven cabinet provided inside the main body for accommodating food to be cooked, a heater for grill cooking provided in an accommodation cavity formed in a ceiling of the oven cabinet, and a heater provided at the back of the oven cabinet. A hot air circulating and supplying device for oven cooking, which generates hot air by a hot air heater and a hot air fan and circulates the hot air from a hot air supply port on the back of the oven to the inside, and a part of the hot air generated by the hot air circulating and supplying device. Is provided with an auxiliary hot air passage for guiding the hot air to the accommodation recess through the outside of the oven chamber, and an energization control means for driving the hot air circulation supply device and energizing the heater when the oven cooking mode is executed. Have.

In this case, an exhaust duct may be provided in the main body so as to connect the housing recess with the outside of the main body. Further, it is effective to apply a deodorizing coating on the surface of the heater, which decomposes odorous components by heat, and further, it is possible to execute a deodorizing mode for driving the heater and the hot air fan of the hot air circulating and supplying device. It can also be configured to do so.

[0009]

According to the above means, when the oven cooking mode is executed, hot air is generated and circulated and supplied from the hot air supply port on the back of the oven to the inside of the oven. Part of the hot air generated by the circulation supply device is guided to the accommodation recess through the auxiliary hot air passage and is supplied from the ceiling of the oven to the inside of the oven, and the heater is energized to be supplied by the heater. Heating will also be performed. Therefore, in addition to being heated by the hot air circulated and supplied, the food to be cooked is also heated by the hot air supplied from above and the radiant heat from the heater.

In this case, if an exhaust duct is provided which connects the housing recess and the outside of the main body, the odor in the oven can be exhausted through the exhaust duct. Also, if the surface of the heater is deodorized, the air inside the oven can be deodorized as the hot air circulates, and if the deodorization mode can be executed, it will remain in the oven oven. The odor that has been generated can be decomposed by the heater.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the overall configuration of the heating cooker according to the present embodiment. A main body 11 of the heating cooker has a rectangular box shape as a whole, and an inside of the oven chamber has a substantially rectangular box shape with an open front. 12 are provided.
The oven cabinet 12 is provided with spaces for arranging various parts and the like between the outer wall of the main body 11 at the top, bottom, left and right, and the back surface, and the interior of the oven cabinet 12 is It is a heating chamber for accommodating food (not shown). The front opening of the oven 12 is opened and closed by a door (not shown).

A rotary plate 13 is arranged at the bottom of the oven cabinet 12. Here, an RT motor 14 is disposed in the center of the outer bottom of the oven chamber 12, and a rotation shaft 14a of the RT motor 14 penetrates the bottom plate of the oven chamber 12 and projects upward. . The rotary plate 13 is attached to the rotary shaft 14a, and is thus rotated by the RT motor 14. And on this rotating plate 13, a cooking utensil for supporting the food is detachably mounted.

In this case, for example, when carrying out oven cooking of sweet buns, cookies, cream puffs, etc., the lower oven plate 1 on which the food is placed is placed on the rotary plate 13.
5 and the upper oven plate 16 are set in upper and lower two stages. As shown, the lower oven plate 1
5 is placed directly on the rotary plate 13, and the upper oven plate 1
6 is placed on the lower oven plate 15 via the legs 16a so that it is set above the lower oven plate 15. When the amount of food to be cooked is small, single-stage cooking using only the lower oven plate 15 is possible. In addition, for example, when performing grill cooking of grilled fish or the like, the food (fish) is placed on the upper oven plate 16 via a grill (not shown).

A housing recess 17 is provided substantially in the center of the ceiling of the oven chamber 12 in the front-rear direction, and a heater 18 for grill cooking is provided in the housing recess 17. The accommodating recess 17 is formed by disposing a reflection plate 20 having a trapezoidal cross section and extending in the left-right direction above the portion of the ceiling plate 19 of the oven cabinet 12 where the punching holes 19a are formed.

In this case, the heater 18 is a quartz tube heater having a rapid heating property, and as shown in FIG.
A heater wire 18b is provided inside 8a.
Further, in this embodiment, the surface of the heater 18 (quartz tube 18a) is deodorized with a deodorizing coating 2 that decomposes odors by heat.
1 is given. The deodorizing coating 21 is disclosed in Japanese Patent Application Laid-Open No. 5-157252 of the applicant's earlier application.
It is known in Japanese Patent Laid-Open Publication No. 5-187644.

A hot air circulation supply device 22 for oven cooking is provided on the back surface of the oven cabinet 12. As shown in FIG. 3, the hot-air circulation supply device 22 includes a hot-air heater 25 formed of, for example, an annular sheathed heater inside a casing 24 provided outside the back plate 23 of the oven 12, and A centrifugal hot air fan 26 is arranged. The hot air fan 26
Is a fan motor 2 provided outside the casing 24.
7 is attached to the rotating shaft 27a. In addition, the back plate 23 is provided with hot air supply ports 23a formed of a large number of punching holes at upper and lower portions, respectively, and the suction port 2 is also formed of a large number of punching holes at an intermediate portion.
3b is formed.

When the hot air heater 25 and the fan motor 26 are energized, the air in the oven chamber 12 is sucked from the suction port 23b by the rotation of the hot air fan 26 as shown by the arrow A in FIG. The hot air heated through the hot air heater 25 is supplied from the hot air supply port 23a into the oven chamber 12 for circulation.

In the present embodiment, as shown in FIG. 1, a communication hole 20a consisting of a number of punching holes is formed in the rear wall of the accommodating recess 17 (reflection plate 20). . Along with this, an exhaust duct 28 for communicating the accommodation recess 17 with the outside of the main body 11 is provided in the main body 11, and the upper surface of the oven chamber 12 is provided with the communication hole 2.
It is provided so as to extend rearward from 0a and open at the back surface of the main body 11.

Further, in the present embodiment, the upper end portion of the casing 24 of the hot air circulation supply device 22 is communicated with a midway portion of the exhaust duct 28. Thus, the auxiliary hot air passage for guiding a part of the hot air generated by the hot air circulation supply device 22 into the accommodation recess 17 is provided so as to also serve as the exhaust duct 28. Also, casing 2
As shown in FIG. 3, a part of the hot air generated by the hot air circulating and supplying device 22 is placed at the upper end of the exhaust duct 28.
An airflow direction plate 29 for guiding the inside toward the accommodation recess 17 side is provided. The wind direction plate 29 is provided not in the entire left-right direction of the casing 24 but in the left half portion.

Further, although not shown, the front surface of the main body 11 is provided with an operation panel having operation keys and a display section for a user to select a cooking mode and give an instruction to start cooking. A control circuit is provided in the main body 11 as an energization control means for energizing the heater 18, the hot air heater 25, the hot air fan 26 (fan motor 27) and the like based on the operation of the operation panel.

At this time, in this embodiment, in addition to the grill cooking mode and the hot air oven cooking mode, the deodorizing mode can be executed. As will be described later in operation, the heater 18 is used when the grill cooking mode is executed.
When the hot air oven cooking mode is executed, the hot air heater 25 and the fan motor 27 are energized, and the heater 18 is also intermittently energized. The heater 18 and the fan motor 27 are energized when the deodorizing mode is executed.

Next, the operation of the above configuration will be described with reference to FIG. FIG. 4 shows patterns of energization control for the heater 18, the fan motor 27, and the hot air heater 25 in each mode. In the figure, ○ indicates continuous energization, Δ indicates intermittent energization (for example, 10% energization), and ×. Indicates disconnection.

First, in the grill cooking, the heater 18
The cooked food is cooked mainly by radiant heat from the heater 18. At this time, the heater 18
Since the deodorizing coating 21 is applied to the surface of the, the deodorizing function is exerted and the odorous components emitted from the cooked product are decomposed. Further, since the housing recess 17 is communicated with the outside by the exhaust duct 28, the oven cabinet 12
The air inside is exhausted to the outside through the exhaust duct 28, and the odor is removed from the exhaust. In this grill cooking mode, if the fan motor 27 is intermittently energized to rotate the hot air fan 26 from time to time, deodorization and exhaust will be further promoted.

Next, when the oven cooking mode is executed,
The hot air heater 25 and the fan motor 27 are energized to drive the hot air circulation supply device 22, and together with this, the heater 18
Will be energized intermittently. With this, the oven cabinet 1
Hot air is circulated and supplied to the inside of 2 as shown by an arrow A in FIG. And at the same time,
As shown by an arrow B in FIG. 1, a part of the hot air generated by the hot air circulation supply device 22 is guided by the wind direction plate 29 and guided to the accommodation recess 17 side in the exhaust duct 28 (auxiliary hot air passage), Oven chamber 12 through the punching holes 19a
Will be supplied within. Furthermore, by intermittently energizing the heater 18, heat rays from the heater 18 are supplied into the oven chamber 12.

As a result, the cooked food placed on the upper oven tray 16 is heated by the hot air circulated and supplied, as well as by the hot air supplied from above and the radiant heat from the heater 18. Will be done. As a result, sufficient heating is performed even in the upper center portion of the upper oven dish 16, and cooking is performed without uneven heating. Further, at this time, the deodorizing function of the deodorizing coating 21 is exerted by energizing the heater 18, so that the odor contained in the circulating hot air can be deodorized, and further, the oven chamber 12 from which the odor has been removed. The air inside is exhausted to the outside through the exhaust duct 28.

Finally, when the deodorizing mode is executed, the heater 18 and the fan motor 27 are energized and the deodorizing function of the deodorizing coating 21 of the heater 18 is exerted while the food is not stored in the oven chamber 12. In this state, the hot air fan 26 allows the air in the oven chamber 12 to circulate. As a result, the odor remaining in the oven cabinet 12 is deodorized, and the air in the oven cabinet 12 from which the odor has been removed is discharged to the outside through the exhaust duct 28. This deodorization mode is effective if it is executed at an appropriate time until the next cooking when the previously cooked food has a strong odor.

As described above, according to this embodiment, when the oven cooking mode is executed, a part of the hot air generated by the hot air circulating and supplying device 22 is supplied from the ceiling of the oven cabinet 12 into the oven and the heater is also used. Since the heating by the radiant heat of 18 is also performed, the upper oven plate 4 like the conventional one
Unlike the one in which the heating of the cooked food was weaker in the central part than in the surroundings, the cooked food can be heated uniformly and evenly, which in turn can improve the quality of cooking. Is.

Further, particularly in the present embodiment, the exhaust duct 28 for communicating the housing recess 17 with the outside of the main body 11 is provided, and the deodorizing coating 21 is applied to the surface of the heater 18. The deodorization inside 12 can be effectively achieved, and the exhaust 18 exhausted to the outside through the exhaust duct 28 can be effectively deodorized by the same heater 18. Furthermore, since the deodorization mode can be executed, the residual odor in the oven chamber 12 can be effectively removed, and the odor can be prevented from being transferred to other cooked foods. It is possible.

In the above embodiment, the exhaust duct 28 is provided and the surface of the heater 18 is provided with the deodorizing coating 21.
In addition, the deodorization mode can be executed.
These configurations do not necessarily have to be provided, and at least an auxiliary hot air passage is provided and the heater 1 is used during oven cooking.
If it is configured to energize 8 as well, it is possible to achieve the intended purpose of uniformly heating the food to be cooked.

In addition, for example, a lower heater may be provided on the bottom plate of the oven, and the upper and lower heaters may be used to perform toast cooking or the like. Further, the present invention is applicable to a microwave oven with an oven and grill function. However, the present invention is not limited to the above-described embodiments, and can be implemented with appropriate modifications without departing from the scope of the invention.

[0031]

As is apparent from the above description, according to the heating cooker of the present invention, a part of the hot air generated by the hot air circulating and supplying device is passed through the auxiliary hot air passage during the oven cooking to pass through the ceiling portion. Since it is configured to supply electricity to the inside of the oven and to energize the heater for grill cooking, it is possible to prevent uneven heating in the oven cooking.

In this case, if an exhaust duct is provided which connects the housing recess and the outside of the main body, odors and the like in the oven can be exhausted through the exhaust duct. Further, if the surface of the heater is provided with a deodorant coating, it is possible to effectively deodorize the odor contained in the circulating hot air or the like. Furthermore, if the deodorization mode can be executed, the odor remaining in the oven can be decomposed by the heater and then discharged to the outside, and the odor in the oven will be transferred to the food. Can be effectively prevented.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a vertical sectional side view of a main body of a heating cooker.

FIG. 2 is an enlarged vertical side view of the heater.

FIG. 3 is a front view of the hot-air circulation supply device part shown with the back plate of the oven chamber removed.

FIG. 4 is a diagram showing an energization pattern in each mode.

FIG. 5 is a view corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

In the drawings, 11 is a main body, 12 is an oven, 17 is a housing recess, 18 is a heater, 19a is a punching hole, 20 is a reflecting plate, 20a is a communication hole, 21 is a deodorizing coating, 22 is a hot air circulation supply device, and 23a is Hot air supply port, 23b suction port, 24 casing, 25 hot air heater, 26 hot air fan, 27 fan motor, 28 exhaust duct, 29
Indicates a wind vane.

Claims (4)

[Claims] 1. An oven cabinet provided inside the main body for accommodating food to be cooked therein, a heater for grill cooking arranged in an accommodation recess formed in a ceiling of the oven cabinet, and the oven cabinet. A hot-air circulation supply device for oven cooking that generates hot air by a hot-air heater and a hot-air fan provided in the back part of the oven and circulates the hot air from the hot-air supply port on the back of the oven to the inside of the oven; An auxiliary hot air passage for guiding a part of the hot air to the accommodation recess through the outside of the oven chamber, and an energization control means for driving the hot air circulation supply device and energizing the heater when the oven cooking mode is executed. A cooking device provided. 2. The cooking device according to claim 1, wherein an exhaust duct is provided inside the main body so as to connect the accommodation recess to the outside of the main body. 3. The heating cooker according to claim 1, wherein the heater has a deodorizing coating on its surface, which decomposes odorous components by heat. 4. The heating cooker according to claim 3, wherein a deodorizing mode for driving the heater and the hot air fan of the hot air circulating and supplying device can be executed.