JPH0348414B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a so-called hot air circulation type heating cooker in which heat generated in a heating device is guided into a heating chamber by a circulation fan to increase the temperature inside the heating chamber. be.

Conventional structure and its problems Conventionally, this type of hot air circulation type heating cooker,
As shown in FIGS. 1 and 2, a suction port 4 is provided in the center of a partition plate 3 that partitions the heating chamber 1 and the compartment 2.
The hot air inside the heating chamber 1 is sucked in from the heating chamber 1 through the air outlet 5 provided on the right and left peripheral parts of the partition plate 3.
Since high-temperature hot air is blown inside, the heated object 7 placed on the periphery of the saucer 6 is likely to be hit by the high-temperature hot air blown from the outlet 5. Therefore, the heated object 7 placed on the periphery of the saucer 6 is The object to be heated 7 dries and the water on its surface evaporates, becoming hard and losing its taste. In addition, it was overheated and the heating unevenness between the center and the periphery was large.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and uses a simple structure to eliminate local heating of the heated object placed around the saucer and to equalize heat distribution within the heating chamber. The main purpose is to

Structure of the Invention In order to achieve the above object, the heating cooker of the present invention has the following features:
A heating chamber that stores an object to be heated in the main body, a heating device that increases the temperature in the heating chamber, a fan that blows and sucks hot air that has risen in the heating chamber into the heating chamber, and a compartment that stores the fan. a partition plate that partitions the compartment and the heating chamber and has an air outlet and a suction port for blowing and suctioning hot air; and a partition plate that is a blowing part for blowing hot air from the compartment to the heating chamber. A blower outlet provided in With this configuration, the direction in which hot air is blown out can be controlled upward, downward, and horizontally. Therefore, the part to be heated of the object to be heated can be separated from the air outlet, and the balance of heating heat amount between the surface and bottom surface of the object to be heated and the upper and lower stages can be easily adjusted. Therefore, local heating of the object to be heated can be eliminated, and the heat distribution between the upper and lower parts of the object to be heated and between the upper and lower tiers is made uniform, and cooking can be carried out without uneven heating.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

3 to 7, there is a heating chamber 1 in the main body 8 in which the object to be heated 7 is heated and cooked. A door 9 is provided at the front opening of the heating chamber 1 so as to be openable and closable. A power supply port 10 is provided on the upper wall of the heating chamber 1, and a magnetron 1 which is a high frequency generator is provided.
1 and a waveguide 12, and radiates high frequency waves into the heating chamber 1. The above power feed port 10 has a waveguide 12
It is covered with a cover 13 made of a dielectric material to prevent food particles, water vapor, etc. from entering. Heating chamber 1
A magnetically driven rotary mounting table 14 is installed on the bottom wall of the apparatus, and a rotatable saucer 6 is placed on the rotating mounting table 14. The rotary mounting table 14 is driven by a cooling fan motor 15, and a belt A18 is connected to a pulley A17 mounted on the motor shaft 16.
Pulley B attached to the worm gear 19 via
20, and also the output shaft 2 of the worm gear 19.
A pulley D24 is driven by a pulley C22 attached to the pulley C22 via a belt B23, and a pulley E26 is connected to the pulley D24 via a pulley shaft 25, so the pulley E26 is interlocked with the pulley C22. A pulley F28 attached to the outer bottom wall of the heating chamber 1 is driven and rotated from the pulley E26 via the belt C27. Pulley F
28 rotates, the magnet A29 attached to the pulley F28 rotates, and the magnet A29 and the magnet B30 provided at the bottom of the rotating mounting table 14 attract each other by magnetic force, and the rotating mounting table 14 supported by the rollers 31 rotates. do. The bottom wall of the heating chamber 1 and the metal plate 32 to which the magnet is attached are made of a non-magnetic metal plate such as stainless steel or aluminum, and are formed to allow magnetism to pass therethrough.

Motor shaft 16 of the above cooling fan motor 15
The magnetron 11 is cooled by a cooling fan 33 attached to one end of the magnetron. After cooling, the air passes through the air guide 34, and most of the air passes through the air guide 3.
The gas is discharged to the outside from the exhaust cover 35 through an opening provided in the upper wall of the heating chamber 1 and the upper wall of the main body 8 . A portion enters the heating chamber 1 through the punched hole 36 on the side wall of the heating chamber 1, and then is discharged to the outside through the exhaust cover 35 from the exhaust guide 38 connected to the exhaust hole 37 on the upper wall of the heating chamber 1. be done. The heat insulating material 40 on the outer upper wall of the heating chamber 1 is a heat insulating plate 39 on the outer upper wall of the heating chamber 1.

A suction port 4 is provided approximately at the center of the back of the heating chamber 1, and a barrier 41 is provided at the right and left peripheral portions, and an air outlet 5 is provided alongside the barrier 41, and the air outlet 5 is formed with a large number of punched holes and divided into three. Partition plate 3 having 5 (upper outlet 5a, middle outlet 5b, lower outlet 5c)
A compartment 2 having a combustion chamber 42, a circulating air heating chamber 43, and a circulating fan storage chamber 44 is provided. The heating chamber 1 and the compartment 2 are separate bodies, and the compartment 2 is attached to the back of the heating chamber 1 via screws.
The combustion chamber 42 is located at the lower part of the compartment 2, and has a combustion air inlet 45 provided at the lower part of the peripheral wall and a combustion gas passage 46 opening to the circulating air heating chamber 43 at the top wall. , main burner 47
Two A and one pilot burner 47B are stored. Further, the circulating air heating chamber 43 is formed so as to surround the suction port 4 of the partition plate 3 by the partition wall 48, and the suction port is opposite to the suction side of the circulation fan 49 provided in the circulation fan storage chamber 44. 50 are perforated. Furthermore, the right and left side walls of the circulation fan storage chamber 44 and the partition wall 48 extend to the partition plate 3. Partition plate 3
A control wall 51 is provided in a portion of the partition wall 48 near the partition wall 48, and a bypass passage 52 is further provided between the control wall 51 and the partition plate 3, and a bypass passage 52 is provided between the control wall 51 and the partition plate 3.
a, middle air outlet 5b, lower air outlet 5c) and the inside of the heating chamber 1, and a hot air control wall 5 is connected to the hot air outlet.
3 constitutes a blowout system path 54.

The fan device 55 is composed of a circulation fan 49, a circulation fan motor 56 that drives the circulation fan 49, a self-cooling fan 57 that cools the circulation fan motor 56, a circulation fan storage chamber 44 serving as a casing, and the like. Circulation fan motor shaft 5
8 via a fan mounting screw 59 in a detachable manner.

With the above configuration, the hot air flowing out from the heating chamber 1 through the suction port 4 provided approximately at the center of the partition plate 3 and the high-temperature combustion gas from the burner 47 that has passed through the combustion gas passage 46 are separated into the circulating air heating chamber. 43, is sucked into the circulation fan 49 through the suction port 50, and flows into the blowout system path 54. The two heat streams are sufficiently mixed by the merging and mixing action during this suction-blowing process and the stirring action of the circulation fan 49, resulting in high-temperature hot air with uniform temperature. The above-mentioned high-temperature hot air flows along the side wall of the circulation fan storage chamber 44 as shown in FIGS.
1 is provided, the pressure is high in the barrier 41 section, and a bypass passage 5 communicating with the blower outlet 5 and the inside of the heating chamber 1 is provided in the part of the partition wall 48 corresponding to the barrier 41 section.
2 is provided. Therefore, the pressure in the bypass passage 52 becomes lower than the pressure in the barrier 41 portion. Therefore, the high-temperature hot air flows along the control wall 51 forming a part of the partition wall 48 and is blown out to approximately the center of the heating chamber 1 (relative to the horizontal plane). Furthermore, as shown in FIGS. 5 and 6, a hot air control plate 53 is provided at the hot air outlet from the compartment 2 to the heating chamber 1, and the mounting position of the control plate 53 is controlled relative to the center of the air outlet 5. By providing the plate 53 at a position where the centers thereof do not coincide with each other, an upper barrier 60 and a lower barrier 61 are formed between the outlet 5 and the control plate 53, and the pressure at the upper barrier 60 and lower barrier 61 is applied to the outlet. The pressure generated above the barrier 60 and below the barrier 61 increases in proportion to the distance from the end of the outlet 5 to the control plate 53, that is, the length of the above barrier 60 and below the barrier 61. Therefore, by changing the lengths of the upper barrier 60 and the lower barrier 61, it is possible to create a pressure difference between the upper barrier 60 part and the lower barrier 61 part. Therefore, the hot air is deflected from the higher pressure side, ie the longer barrier length, to the lower pressure side, ie the shorter barrier length. Fifth
As shown in FIGS. 3 and 7, the direction of the hot air blown out from the right upper air outlet 5a is longer than the length of the upper barrier 60 than the length of the lower barrier 61, so the direction of the hot air is deflected downward and at the same time as shown in The air is blown to the approximate center of the heating chamber 1 (with respect to the horizontal plane), heats the object 7 placed on the upper saucer 6a, hits the front door 9, and some of it circulates and some of it is heated. is sucked in from the air inlet 4. As shown in FIGS. 6 and 7, the direction of the hot air blown out from the left upper outlet 5a is the same as the length of the upper barrier 60 and the length of the lower barrier 61, so the direction of the hot air becomes horizontal and at the same time It is blown out almost to the center, heats the upper part of heating chamber 1, and heats the upper part of heating chamber 1.
The heat removed from the upper wall is replenished and the upper saucer 6a
The object to be heated 7 placed thereon is heated in a balanced manner so that the heat is not taken away, hits the front door 9, a part of which is circulated, and a part of which is sucked through the air inlet 4.
A part of the gas flows through the exhaust guide 38 from the exhaust hole 37 in the upper wall of the heating chamber 1, passes through the exhaust cover 35, and is discharged to the outside. The direction of the hot air blown out from the right middle air outlet 5b is deflected upward because the length of the upper barrier 60 is shorter than the length of the lower barrier 61. At the same time, the air is blown out to approximately the center of the heating chamber 1, heats the bottom surface of the upper saucer 6a, hits the front door 9, and is partially circulated, while a portion is sucked through the blowing port 4. The direction of the hot air blown out from the left central outlet 5b is on the barrier 60.
Since the length is longer than the length of the lower barrier 61, it is deflected downward. At the same time, the air is blown to the approximate center of the heating chamber 1 (relative to the horizontal plane), heats the heated object 7 placed on the lower saucer 6b, and hits the front door 9, part of which circulates and part of which is blown out. It is sucked from outlet 4. The direction of the hot air blown out from the right and right lower air outlets 5c is deflected downward because the length of the upper barrier 60 is longer than the length of the lower barrier 61. At the same time, it is blown out to the approximate center of the heating chamber 1, heating the bottom surface of the lower saucer 6b and at the same time replenishing the heat taken away from the bottom wall of the heating chamber 1, heating while maintaining balance and hitting the front door 9 once. part is circulated and a part is sucked from the blowing port 4.

As described above, according to this embodiment, the hot air control plate 53 is provided in the hot air blowing section 62 from the compartment 2 to the heating chamber 1, and the mounting position of the control plate 53 is controlled with respect to the center of the blowing outlet 5. By providing the plates 53 at positions that do not coincide with the center of the plate 53, an upper barrier 60 and a lower barrier 61 are formed between the air outlet 5 and the control plate 53. The pressure above the barrier 60 and below the barrier 61 is
The pressure generated above the barrier 60 and below the barrier 61 increases approximately in proportion to the length of the barrier. Therefore, by changing the lengths of the upper barrier 60 and the lower barrier 61, a pressure difference can be created between the upper and lower portions of the air outlet 5. Therefore, the hot air can be deflected from the side with higher pressure, that is, the side with the longer barrier length, to the side with lower pressure, that is, the side with the shorter barrier length. By changing the direction, the blowing direction of hot air can be freely deflected. Therefore, the hot air blown out from each outlet 5 is concentrated in one part, and the weak parts can be strengthened without heating the object 7 strongly in some parts, and the surfaces of the upper stage, the lower stage, and the object 7 to be heated can be strengthened. , it is possible to perform cooking with a well-balanced bottom surface, and the object to be heated 7 will not be partially dried and the moisture on the surface will evaporate and become hard and taste will not deteriorate.

In addition, the hot air deflected upward or downward from the air outlet 5 gradually spreads and mixes with the hot air in the heating chamber 1, and becomes softer hot air on the dish towel of the object to be heated 7, which evens out the temperature of the object to be heated 7. The heated air envelops and heats the air while flowing toward the suction port 4 provided approximately in the center of the partition plate 3. In addition, since the saucer 6 is made of metal, it has good heat conduction and promotes uniformity of the temperature of the saucer 6 and the ambient temperature, and since it rotates, it is possible to cook without uneven heating or localized dryness. It has this effect.

Although the above description has been made regarding a gas cooking device equipped with a high-frequency heating device, it goes without saying that the same applies to a cooking device without a high-frequency heating device or an electric cooking device.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

By changing the position of the control plate, the blowing direction of hot air can be freely deflected. Therefore, the hot air blown out from each outlet 5 can be dispersed, which was concentrated in one part, and the object to be heated will not be strongly heated in some parts, and the weak parts can be made stronger. Moreover, it is possible to heat and cook the object to be heated in a well-balanced manner between the surface and the bottom surface of the object to be heated, and the object to be heated does not become partially dry and the water on the surface evaporates, becoming hard and losing its taste.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of a conventional heating cooker;
The figure is a front cross-sectional view of the same, Figure 3 is a plan cross-sectional view of a heating cooker showing an embodiment of the present invention, Figure 4 is an enlarged cross-sectional view of section A in Figure 3, and Figure 5 is a right side view of the same cross section,
FIG. 6 is a left side sectional view of the same, and FIG. 7 is a front sectional view of the same. 1... Heating chamber, 2... Compartment, 3... Partition plate, 5
...Air outlet, 7...Heated object, 47...Burner,
48... Partition wall, 49... Circulation fan, 51... Control wall, 53... Control board, 55... Fan device.

Claims (1)

[Claims] 1 A heating chamber that stores an object to be heated in a main body, a heating device that increases the temperature inside the heating chamber, a fan that blows and sucks hot air that has risen in the heating chamber into the heating chamber, and a partition that stores the fan. a partition plate that partitions the compartment and the heating chamber and has an air outlet and a suction port for blowing and suctioning hot air; and a partition plate that is a blowing section for blowing hot air from the compartment to the heating chamber. and a pair of hot air control plates provided above and below the air outlet, and the centers of the pair of hot air control plates are arranged at positions that do not coincide with the center of the air outlet. A heating cooker with a configuration.