WO2011086948A1

WO2011086948A1 - Heating device

Info

Publication number: WO2011086948A1
Application number: PCT/JP2011/000190
Authority: WO
Inventors: 龍太近藤; 良治島田; 正満近藤; 圭二原田
Original assignee: パナソニック株式会社
Priority date: 2010-01-18
Filing date: 2011-01-17
Publication date: 2011-07-21
Also published as: JP5830685B2; EP2527745A1; CN102713443B; CN102713443A; TW201144722A; JPWO2011086948A1; EP2527745A4

Abstract

Disclosed is a heating device which uses convection heating. Said heating device has a heat-source chamber (8) that connects to a heating chamber (2), which contains an object to be heated, via an inlet (16) and a plurality of outflow ports (23A, 23B) formed in a dividing wall (15). The heat-source chamber is provided with: a fan unit (9) which creates an airflow inside the heat-source chamber; a heating unit (11) which heats said airflow; and channel formation parts (30A, 30B) which form channels whereby the airflow heated by the heating unit (11) moves towards the surface of the heat-source chamber opposite the dividing wall (15), makes a circuit around at least part of the space in the heat-source chamber, and then is expelled from at least one of the plurality of outflow ports (23A, 23B) towards the middle of the heating chamber (2).

Description

Heating device

The present invention relates to a heating apparatus that heats an object to be heated in a heating chamber using a convection heating method in which hot air is formed by a blower fan and a heater, and the formed hot air is convected in the heating chamber.

2. Description of the Related Art Conventionally, in a cooking device as a heating device of this type, a hot air circulation mechanism including a blower fan and a heater is generally provided behind a rear wall serving as a back surface of a heating chamber in which an object to be heated is arranged. Yes. The hot air circulation mechanism sucks air in the heating chamber from a suction port provided on the rear wall of the heating chamber by a blower fan, blows it to the heater, and hot air heated by the heater from a blower outlet provided on the rear wall of the heating chamber. It is configured to blow out into the heating chamber. In a heating cooker equipped with a hot air circulation mechanism, cooking is performed on an object to be heated in the heating chamber by a convection heating method that utilizes hot air circulating in the heating chamber.

In such a conventional cooking device, there is one in which hot air is supplied from a blower outlet to a heating chamber using a wind direction plate provided in a hot air circulation mechanism, and the temperature distribution in the heating chamber is made uniform (for example, (See Japanese Patent Publication No. 7-11256 (Patent Document 1)). Furthermore, for the purpose of cooking without uneven heating of the object to be heated, a wind direction changing member is provided in the vicinity of the blowout port of the hot air circulation mechanism, and a part of the hot air from the blower fan is collected, and hot air from the blowout port is collected. Some are configured to spread in the heating chamber (see, for example, Japanese Patent Application Laid-Open No. 2006-71124 (Patent Document 2)).

FIG. 19 is a side sectional view showing an internal configuration of a conventional cooking device disclosed in Patent Document 1. In the heating cooker shown in FIG. 19, an inner casing 103 is provided on the outer surface of the rear wall 102 that is the back surface of the heating chamber 101, and the rear wall 102 and the inner casing 103 constitute a casing of the hot air circulation mechanism. ing. Inside the hot air circulation mechanism, a blower fan 104 constituted by a centrifugal fan and a substantially annular heater 105 are provided. A suction port 106 made up of a number of punching holes is formed in the center of the rear wall 102 of the heating chamber 101. In the rear wall 102, a plurality of air outlets 107 made up of a number of punching holes are formed at positions above and below the suction port 106.

A blower fan 104 that is a centrifugal fan is provided inside the inner casing 103 so as to face the suction port 106 formed in the center of the rear wall 102 of the heating chamber 101. The blower fan 104 is rotationally driven by a motor 108 provided outside the inner casing 103. The heater 105 is a substantially annular sheathed heater provided so as to surround the blower fan 104.

In the conventional cooking device shown in FIG. 19, a part of hot air sent out in the centrifugal direction from the blower fan 104 and heated by the heater 105 is configured to be dammed by the wind direction plate 109. The wind direction plate 109 is provided behind the air outlet 107 and in the vicinity of the air outlet 107 in the direction of the flow of the hot air sent out from the blower fan 104. The wind direction plate 109 aims to increase the amount of hot air supplied from the blower outlet 107 to the heating chamber 101 by blocking and collecting part of the hot air from the blower fan 104. In order to achieve this object, in the conventional cooking device shown in FIG. 19, the plate surface of the wind direction plate 109 with which the hot air from the blower fan 104 abuts is perpendicular to the rear wall 102, and from the rotation center of the blower fan 104. Are arranged so as to be parallel to the centrifugal direction or the vertical direction of the blower fan 104.

In addition, in the conventional cooking device disclosed in Patent Document 2, as in the cooking device disclosed in Patent Document 1, a part of the hot air that is sent from the blower fan in the centrifugal direction and heated by the heater is It is comprised so that it may be blocked by the wind direction change member, and the wind direction of the hot air supplied to a heating chamber from the blower outlet is changed. This air direction changing member is disposed in the vicinity of the air outlet and behind the air outlet in the direction in which the hot air flows by the blower fan. The conventional cooking device disclosed in Patent Document 2 aims to reduce the bias of the hot air inside the heating chamber by blocking a part of the hot air from the blower fan by the air direction changing member to change the air direction. Yes.

In the conventional cooking device configured as described above, when an object to be heated is stored in the heating chamber and cooking is started, the blower fan is rotationally driven by the motor, and the air in the heating chamber is sucked in. It is sucked into the hot air circulation mechanism from the mouth. Further, the air inside the hot air circulation mechanism is sent out in the centrifugal direction by the rotation of the blower fan. The air sent from the blower fan in the centrifugal direction is heated by the heater and supplied to the heating chamber from a plurality of outlets (for example, the upper position, the lower position, and the side position of the rear wall). In this manner, hot air circulates inside the heating chamber and the hot air circulation mechanism, and convection heating is performed on the object to be heated in the heating chamber.

In the conventional cooking device, when the convection heating is started, a part of the hot air comes into contact with the wind direction plate (wind direction changing member) inside the hot air circulation mechanism, and the hot air flows in the direction opposite to the rotation direction of the blower fan. The hot air is supplied to the inside of the heating chamber from the air outlet near the wind direction plate. Thus, by providing a plurality of wind direction plates (wind direction changing members) inside the hot air circulation device, hot air from the plurality of outlets is supplied into the heating chamber, and heating unevenness, so-called uneven baking, is suppressed.

Further, there has been proposed a cooking device that adjusts the direction of hot air circulating in the heating chamber in accordance with the accommodation position, shape, size, etc. of the object to be heated in the heating chamber (for example, Japanese Patent Laid-Open No. 6-347041). No. (Patent Document 3) and JP-A No. 2004-353922 (Patent Document 4)). In the conventional cooking device disclosed in Patent Document 3 and Patent Document 4, a means for changing the direction of the wind is provided in the heating chamber, and the circulation direction of the hot air in the heating chamber is forcibly changed. .

Japanese Patent Publication No.7-111256 JP 2006-71124 A JP-A-6-347041 JP 2004-353922 A

In the configuration of the conventional heating cooker disclosed in Patent Document 1 and Patent Document 2, the air flow from the blower fan, which is a centrifugal fan, is sent out in the centrifugal direction of the blower fan, and after the heating chamber in the hot air circulation mechanism It flows along the wall.

In addition to that, the airflow direction of the airflow from the blower fan is inclined in the rotational direction from the radial direction of the blower fan according to the rotation of the blower fan, and is in a so-called outward spiral shape. Further, depending on the relationship between the amount of air sent out by the blower fan and the rotational speed of the blower fan, the air flow may be blown out in a direction close to the tangential direction in the rotation of the blower fan. For this reason, most of the hot air blown from the hot air circulation device is blown outwardly from a plurality of outlets on the rear wall of the heating chamber, or blown to the side surface, ceiling surface and bottom surface of the heating chamber.

In the conventional cooking device disclosed in Patent Literature 1 and Patent Literature 2, a wind direction plate (wind direction changing member) is provided inside the hot air circulation mechanism so that the amount of hot air from the air outlet increases. Yes. The direction of the hot air blown out from the blower outlet is a direction close to a substantially tangential direction in the rotation of the blower fan. For this reason, the hot air from the blower outlet formed at the lower position of the rear wall of the heating chamber flows along the bottom surface of the heating chamber, and the hot air from the blower outlet formed at the upper position of the rear wall of the heating chamber is heated by the heating chamber. The hot air from the air outlet formed at the side position of the rear wall of the heating chamber flows along the side surface. As a result, the hot air blown from the hot air circulation mechanism mainly heats the wall surface of the heating chamber.

Therefore, in the conventional cooking device, the wall surface of the heating chamber becomes hotter than the object to be heated in the heating chamber, the heat dissipation loss is increased, and the object to be heated is heated with high efficiency. Had no problem.

Further, in the conventional cooking device, the hot air blown from the hot air circulation mechanism into the heating chamber is blown in a direction substantially tangential to the rotation circle of the blower fan from the blower outlet in a direction perpendicular to the rotation axis of the blower fan. And may flow along the rear wall of the heating chamber.

The hot air thus blown out from the outlet along the rear wall of the heating chamber collides with the upper, lower, left and right wall surfaces of the heating chamber and directly heats these wall surfaces. As a result, the conventional cooking device has a problem that the heating efficiency for the object to be heated further deteriorates.

Moreover, in the structure of the conventional heating cooker disclosed by the above-mentioned patent document 3 and patent document 4, according to the accommodation position of the to-be-heated material in a heating chamber, a shape, or a magnitude | size, the predetermined position in a heating chamber The control mechanism was fixed to the heater, and the heating operation was performed by adjusting the direction of the hot air in the heating chamber.

Therefore, in the conventional cooking device disclosed in Patent Document 3 and Patent Document 4, since the direction of the hot air cannot be changed during the heating operation, the heated object is efficiently applied by directly applying the hot air to the heated object. And heating the object to be heated, which is likely to cause uneven baking, to be compatible with each other.

The present invention solves the problem in the heating device which is the above-described conventional heating cooker, and applies the hot air from the outlet uniformly to the object to be heated in the heating chamber and directly against the wall surface of the heating chamber. A heating device that can efficiently heat the object to be heated by reducing the heat dissipation from the wall surface of the heating chamber by performing intensive heating operation on the object to be heated while reducing the heating The purpose is to do.

A heating device according to a first aspect of the present invention includes a heating chamber that houses an object to be heated, and a heat source that communicates with the heating chamber by a suction port and a plurality of outlets formed in a partition wall between the heating chamber and the heating chamber. Room,
In the inside of the heat source chamber, an air flow that forms an air flow, a heating unit that heats the air flow, and an air flow heated by the heating unit are moved in a direction of a surface facing the partition, A flow path forming unit that forms a flow path that blows out from at least one of the plurality of air outlets toward the center of the heating chamber after circulating around at least a part of the space in the heat source chamber; Heating device. In the heating device of the first aspect according to the present invention configured as described above, by flowing hot air generated by the blower unit and the heating unit in the heat source chamber through the flow channel formed by the flow channel forming unit, Hot air blown from the outlet into the heating chamber can flow toward the center of the heating chamber.

The heating device according to the second aspect of the present invention is configured such that the flow path forming portion in the first aspect is disposed between the air flow paths from the heating portion to the outlet. Yes. In the heating apparatus according to the second aspect of the present invention configured as described above, the hot air generated by the blower unit and the heating unit in the heat source chamber is blown out from the outlet toward the center of the heating chamber. A flow path is reliably formed.

The heating device according to a third aspect of the present invention is the guide surface in which the flow path forming portion in the first aspect moves the air flow heated by the heating portion in the direction of the surface facing the partition. The air flow moved in the direction of the surface facing the partition wall by the guide surface is circulated through at least a part of the space in the heat source chamber and then blown out from the air outlet in contact with the back surface of the guide surface. It is comprised so that. According to the heating device of the third aspect of the present invention configured as described above, the hot air from the air outlet can be uniformly applied to the object to be heated in the heating chamber, and the wall surface of the heating chamber It is possible to reduce the direct heating of the object and to perform a concentrated heating operation on the object to be heated.

The heating device according to a fourth aspect of the present invention is a centrifugal fan in which the air blowing unit in the third aspect sucks air inside the heating chamber from the suction port of the partition wall and discharges air in a centrifugal direction. The heating unit is provided so as to surround the outer periphery of the air blowing unit. According to the heating device of the fourth aspect of the present invention configured as described above, the air sucked from the partition wall is reliably heated by the heating unit provided around the centrifugal fan in the heat source chamber, Hot air can be blown out in a desired direction into the heating chamber by the hot air flow path formed by the path forming unit. As a result, heat dissipation loss can be suppressed and the object to be heated can be efficiently heated, and the heating chamber can be preheated and the cooking speed can be improved.

The heating device of the fifth aspect according to the present invention has an inclined surface in which at least a part of the guide surface in the third aspect is inclined at a predetermined angle with respect to the axial direction of the rotating shaft of the blower unit. According to the heating device of the fifth aspect of the present invention configured as described above, pressure loss in the heat source chamber can be suppressed.

In the heating device of the sixth aspect according to the present invention, at least a part of the guide surface in the third aspect is configured by a curved surface. According to the heating device of the sixth aspect of the present invention configured as described above, pressure loss in the heat source chamber can be suppressed, and the direction of the hot air from the blowout port is more directed toward the front of the heating chamber. be able to.

The heating device according to a seventh aspect of the present invention is configured such that the guide surface in the third aspect has a predetermined distance from the air outlet and covers at least the entire air outlet. . According to the heating device of the seventh aspect of the present invention configured as described above, the flow path of hot air in the heat source chamber can be adjusted, and the blowing direction of hot air into the heating chamber can be adjusted. it can.

The heating device of the eighth aspect according to the present invention has an inclined surface in which at least a part of the guide surface in the third aspect is inclined by a predetermined angle with respect to the axial direction of the rotation shaft of the blower section, By changing the angle of the inclined surface, the direction of the air flow blown out from the air outlet is changed. According to the heating device of the eighth aspect of the present invention configured as described above, the flow path of the hot air in the heat source chamber can be adjusted, and the blowing direction of the hot air into the heating chamber can be adjusted. it can.

The heating device according to the ninth aspect of the present invention is configured to change the direction of the air flow blown out from the outlet by changing the number of revolutions of the air blowing section in the third aspect. . According to the heating device of the ninth aspect of the present invention configured as described above, the direction of the hot air from the outlet can be easily changed by changing the rotational speed of the blower.

The heating device according to a tenth aspect of the present invention is the guide surface in which the flow path forming portion in the first aspect moves the air flow heated by the heating portion in the direction of the surface facing the partition. And the air flow moved in the direction of the surface facing the partition wall by the guide surface so as to circulate through at least a part of the space in the heat source chamber and come into contact with the back surface of the guide surface and blow out from the outlet. A configured longitudinal flow path forming section;
In the flow direction of the air flow formed by the blower, a blocking surface is provided on the downstream side of the blower outlet, and is arranged to block a part of the airflow from the blower and blow out from the blower outlet. And a transverse flow path forming part. According to the heating device of the tenth aspect of the present invention configured as described above, the air sucked from the partition wall is heated in the heat source chamber, and the flow channel formed by the flow channel forming unit causes the heat chamber to enter the heating chamber. On the other hand, hot air can be blown out in a desired direction. As a result, heat dissipation loss can be suppressed and the object to be heated can be efficiently heated, and the heating chamber can be preheated and the cooking speed can be improved.

The eleventh aspect of the heating device according to the present invention is the guide surface in which the flow path forming portion in the first aspect moves the air flow heated by the heating portion in the direction of the surface facing the partition. And the air flow moved in the direction of the surface facing the partition wall by the guide surface so as to circulate through at least a part of the space in the heat source chamber and come into contact with the back surface of the guide surface and blow out from the outlet. A configured longitudinal flow path forming section;
A dam provided at the downstream side of the air outlet in the flow direction of the air flow formed by the air blower, and arranged to dam a part of the air flow from the air blower and blow out from the air outlet. A transverse flow path forming portion having a surface;
A ceiling flow path forming section that has a ceiling surface that covers the air discharge opening at a predetermined interval from the blow outlet, and that connects the vertical flow path forming section and the horizontal flow path forming section; In the heating device according to the eleventh aspect of the present invention configured as described above, the hot air generated by the blower unit and the heating unit in the heat source chamber is blown out from the outlet toward the center of the heating chamber. A flow path is reliably formed.

In the heating device of the twelfth aspect according to the present invention, the guide surface of the vertical flow path forming portion and the blocking surface of the horizontal flow path forming portion in the tenth or eleventh aspect are arranged around the outlet. The guide surface and the damming surface are orthogonal to each other. In the heating apparatus according to the twelfth aspect of the present invention configured as described above, the hot air generated by the blower unit and the heating unit in the heat source chamber is blown out from the outlet toward the center of the heating chamber, and is heated. Uniform heating is possible in the room.

In the heating device of the thirteenth aspect according to the present invention, the air blowing part in the tenth or eleventh aspect sucks air inside the heating chamber from the suction port of the partition wall and releases the air in the centrifugal direction. It is a centrifugal fan, and the heating unit is provided so as to surround the outer periphery of the blower unit. According to the heating apparatus of the thirteenth aspect of the present invention configured as described above, the air sucked from the partition wall is reliably heated by the heating unit provided around the centrifugal fan in the heat source chamber, Hot air can be blown out in a desired direction into the heating chamber by the hot air flow path formed by the path forming unit.

According to a fourteenth aspect of the present invention, there is provided a heating device comprising: Have. According to the heating device of the fourteenth aspect of the present invention configured as described above, pressure loss in the heat source chamber can be suppressed.

In the heating device of the fifteenth aspect according to the present invention, at least a part of the guide surface in the tenth or eleventh aspect is configured by a curved surface. According to the heating device of the fifteenth aspect of the present invention configured as described above, pressure loss in the heat source chamber can be suppressed.

The heating device of the present invention can uniformly apply hot air from the outlet to the object to be heated in the heating chamber, reduce direct heating to the wall surface of the heating chamber, and concentrate on the object to be heated. By performing an appropriate heating operation, it is possible to reduce the heat dissipation loss from the wall surface of the heating chamber and to efficiently heat the object to be heated.

Side surface sectional drawing which shows the internal schematic structure of the heating cooker of Embodiment 1 which concerns on this invention. Plan sectional drawing by the II-II line of a part in the heating cooker shown in FIG. The perspective view which shows the partition used as the back wall of the heating chamber in the heating cooker of Embodiment 1. FIG. Plan sectional drawing which shows the heat source room and drive room in the heating cooker of Embodiment 2 which concerns on this invention. Plan sectional drawing which shows the heat source chamber and drive chamber in the heating cooker of Embodiment 3 which concerns on this invention. The perspective view which shows the inside of the heat source chamber shown in FIG. In the heating cooker of Embodiment 4 which concerns on this invention, plane sectional drawing which shows the heat-source room and drive room of a state below predetermined temperature In the heating cooker of Embodiment 4 which concerns on this invention, plane sectional drawing which shows the heat-source room and drive room of the state exceeding predetermined temperature The perspective view which looked at the partition in the heating cooker of Embodiment 4, etc. from the back side Plan sectional drawing which shows the heat source chamber and drive chamber in the heating cooker of Embodiment 5 which concerns on this invention The block diagram which shows the structure of the control part in the heating cooker of Embodiment 5. FIG. The pattern figure which shows the operation | movement process of the heating cooking in the heating cooker of Embodiment 5. The pattern figure which shows the operation | movement process of the heating cooking in the heating cooker of Embodiment 6 which concerns on this invention. Plan sectional drawing which shows the heat source chamber and drive chamber in the heating cooker of Embodiment 7 which concerns on this invention The perspective view which looked at the partition used as the back wall of the heating chamber in the heating cooker of Embodiment 7 from back. Plan sectional drawing which shows the heat source chamber and drive chamber in the heating cooker of Embodiment 8 which concerns on this invention. Plan sectional drawing which shows the heat source chamber and drive chamber in the heating cooker of Embodiment 9 which concerns on this invention The perspective view which looked at the partition which is a back wall of the heating chamber in the heating cooker of Embodiment 9 from back. Plan sectional drawing which shows the heat source room and drive room in the heating cooker of Embodiment 10 which concerns on this invention. Side sectional view showing the internal configuration of a conventional cooking device

Hereinafter, a cooking device according to an embodiment of the heating apparatus of the present invention will be described with reference to the accompanying drawings. Note that the heating device of the present invention is not limited to the configuration of the heating cooker described in the following embodiment, but the technical idea equivalent to the technical idea described in the following embodiment and the present technology. It includes a heating device configured based on common technical knowledge in the field.

(Embodiment 1)
A first embodiment according to the present invention will be described with reference to FIGS. FIG. 1 is a side sectional view showing a schematic internal configuration of the heating cooker according to the first embodiment of the present invention. FIG. 2 is a cross-sectional plan view taken along line II-II in the cooking device shown in FIG. FIG. 3 is a perspective view showing a back wall which is a rear wall of the heating chamber in the heating cooker according to the first embodiment.

In addition, in description of the heating cooker of Embodiment 1, the surface where the door which puts in / out a to-be-heated object is arrange | positioned is made into the front of a heating cooker, and the left-right direction is demonstrated as the direction seen from the front. Similarly, in the respective embodiments described later, the above definitions are used for the front and left-right directions.

As shown in FIG. 1, in the heating cooker according to the first embodiment, a heating chamber 2 having a substantially rectangular parallelepiped structure for housing a food material to be heated 10 is formed inside a main body 1. . The heating chamber 2 mounts a wall plate that forms a ceiling surface, a bottom surface, a left side surface, a right side surface, and a back surface with a metal material, a door 3 that opens and closes in order to put the heated object 10 in and out, and the heated object 10. And a plurality of support portions 4 that support the cooking pan 5 for the purpose. In the heating cooker of Embodiment 1, the support part 4 is formed so that the three-step cooking pan 5 may be arrange | positioned.

A magnetron 6 and an antenna 7 are installed below the heating chamber 2, and electromagnetic waves generated in the magnetron 6 can be radiated into the heating chamber 2 via the antenna 7. The heating chamber 2 configured as described above is configured such that the electromagnetic wave supplied into the heating chamber 2 is confined in the heating chamber 2 by closing the door 3.

In the first embodiment, the electromagnetic wave from the magnetron 6 is fed to the heating chamber via the antenna. However, the present invention forms an electromagnetic wave by a circuit configuration using a semiconductor element and feeds the heating chamber. The present invention can also be applied to a configuration in which a convection heating type oven cooker is used.

Furthermore, in the cooking device of the first embodiment, a heat source chamber 8 is provided adjacent to the heating chamber 2 on the back side, which is the rear side of the heating chamber 2. Inside the heat source chamber 8, a blower fan 9 that is a centrifugal fan and a heater 11 composed of a sheathed heater that heats the air sent out by the rotation of the blower fan 9 are installed. The heater 11 in the heating cooker according to the first embodiment is disposed outside the blade portion of the blower fan 9 and is provided at a position offset to the rear side, and has a substantially square frame shape.

In the first embodiment, an example in which the heater 11 has a substantially square frame shape will be described. However, the present invention is not limited to such a configuration, and other shapes such as an annular frame. Shape may be sufficient.

A motor 13 as a drive source is installed in a drive chamber 12 which is a space further behind the heat source chamber 8. The shaft of the motor 13 passes through the heat source chamber back wall 14 which is the back surface of the heat source chamber 8, and a blower fan 9, which is a blower, is attached to the tip of the shaft. As described above, the heat source chamber 8 in which the heater 11 as a heating unit as a heat source is installed and the drive chamber 12 in which the motor 13 as a drive source is installed are partitioned by the inner case 22 having the heat source chamber rear wall 14. It is insulated.

Further, a partition wall 15 serving as a back wall of the heating chamber is provided between the heating chamber 2 in which the article to be heated 10 is accommodated and the heat source chamber 8 in which the blower fan 9 and the heater 11 are installed. The partition wall 15 partitions the heating chamber 2 and the heat source chamber 8 spatially.

In the partition wall 15 which is the back wall of the heating chamber, a suction port 16 is formed at a position (central region) facing the vicinity of the center of the blower fan 9. Moreover, in the partition 15, it is an area | region close | similar to the wall surface of the heating chamber 2, and

several air outlet

17A, 17B, 23A, 23B comprised by many punching holes in the area | region outside the ventilation fan 9 (refer FIG. 3). Is formed.

In the heating cooker according to the first embodiment, as shown in FIG. 1, the heat source chamber rear wall 14 is not flat, and the central portion protrudes toward the heat source chamber in order to provide the motor 13 in the rear drive chamber 12. It is formed into a shape. In other words, the heat source chamber back wall 14 is formed in a concave shape so that the outer peripheral portion thereof protrudes toward the drive chamber. The motor 13 is arranged in a recessed space on the drive chamber side formed in the central portion of the heat source chamber rear wall 14.

In the heating cooker according to the first embodiment, as described above, the heating chamber 2 includes the left side surface 18, the right side surface 19, the bottom surface 20, the ceiling surface 21, and the back surface in addition to the door 3 that is the front surface. It is comprised by the partition 15 which is a back wall. The left side surface 18 and the right side surface 19 are provided with three upper and lower support portions 4 protruding into the heating chamber 2 substantially parallel to the bottom surface 20. The cooking tray 5 can be held in the heating chamber 2 by these support portions 4.

As described above, the heat source chamber 8 formed by being surrounded by the inner case 22 including the partition wall 15 and the heat source chamber rear wall 14 is disposed behind the partition wall 15 which is the back surface of the heating chamber 2. That is, the partition wall 15 serving as the back surface of the heating chamber 2 serves to separate the heating chamber 2 from the heat source chamber 8. Inside the heat source chamber 8, a blower fan 9 that is a centrifugal fan and a heater 11 are provided. The blower fan 9 and the heater 11 are controlled by a control unit 24 provided inside the main body 1.

As shown in FIGS. 2 and 3, a suction port 16 composed of a number of punching holes is formed in the central portion of the partition wall 15 which is the back surface of the heating chamber 2. The partition 15 has a suction port 16 at the center, and a plurality of

air outlets

17A, 17B, 23A, and 23B are formed in a region around the suction port 16. In the region near the upper end portion of the partition wall 15, an upper air outlet 17 A composed of a number of punching holes is formed in a band shape in the region from the vicinity of the end portion near the left side surface 18 of the heating chamber 2 to the substantially central portion. It is elongated in the direction. Similarly, in the region near the lower end portion of the partition wall 15, the lower blowout port 17 B formed of a number of punching holes is formed in a band shape in the region from the vicinity of the end portion near the right side surface 19 of the heating chamber 2 to the substantially central portion. It is formed to be elongated in the horizontal direction. That is, the two upper outlets 17 A and the lower outlet 17 B formed in the partition wall 15 are formed point-symmetrically with respect to the center of the inlet 16. In FIG. 3, the arrow indicates the rotation direction of the blower fan 9.

Further, in the partition wall 15, the air outlets 23 A and 23 B configured by a large number of punching holes are formed in the horizontal direction in the left and right regions of the suction port 16 (see FIG. 3).

As described above, the partition wall 15 is provided with the left outlet 23A and the right outlet 23B, which are similarly formed of a number of punching holes, at the left and right positions sandwiching the suction port 16. The shapes of the upper air outlet 17A and the lower air outlet 17B are longer in the horizontal direction and shorter in the vertical direction than the shapes of the left air outlet 23A and the right air outlet 23B (see FIG. 3). The heating chamber 2 and the heat source chamber 8 communicate with each other through the punching holes of the suction port 16, the upper and

lower outlets

17A and 17B, and the left and

right outlets

23A and 23B in the partition wall 15.

The punching holes constituting the suction port 16, the upper and

lower outlets

17A and 17B, and the left and

right outlets

23A and 23B have a plurality of diameters of about 2 to 5 mm so that electromagnetic waves do not leak out of the heating chamber 2 during electromagnetic wave heating. It is formed as a collection of holes.

The intake portion of the blower fan 9 in the heat source chamber 8 is disposed so as to face the suction port 16 of the partition wall 15. A substantially ring-shaped heater 11 having a substantially square frame shape is provided on the outer peripheral portion serving as an exhaust portion of the blower fan 9. The blower fan 9 is rotationally driven by a motor 13 provided outside the heat source chamber 8 to generate an air flow that sends out air in the centrifugal direction. The generated air flow is heated by the heater 11 at the outer peripheral position of the blower fan 9 to become hot air and is supplied into the heating chamber 2 from the upper and

lower outlets

17A and 17B and the left and

right outlets

23A and 23B in the partition wall 15 to be heated. The object 10 is heated by convection.

In the partition wall 15 serving as the rear wall of the heating chamber 2, a first flow path forming portion 30A is provided between the central suction port 16 and the left outlet 23A on the back surface on the heat source chamber 8 side. Further, on the back surface of the partition wall 15, a second flow path forming portion 30B is provided between the central suction port 16 and the right outlet 23B. The first flow path forming portion 30 A and the second flow path forming portion 30 B are formed such that one end is fixed to the back surface of the partition wall 15 and the other end protrudes obliquely into the internal space of the heat source chamber 8. The protruding end portions of the first flow path forming portion 30A and the second flow path forming portion 30B are arranged with a predetermined gap from the heat source chamber back wall 14. In addition, the first flow path forming portion 30A and the second flow path forming portion 30B are provided between the heater 11 disposed so as to surround the blower fan 9 and the

respective outlets

23A, 23B. . As described above, the blower fan 9, the heater 11, the first flow path forming portion 30 A, and the second flow path forming portion 30 B are configured by the partition wall 15 and the inner case 22 having the heat source chamber back wall 14. It is provided inside the heat source chamber 8 to form a special air flow in the heat source chamber 8.

As shown in FIGS. 2 and 3, the first flow path forming portion 30 A and the second flow path forming portion 30 B at the left and right positions of the central suction port 16 are formed on the back surface of the partition wall 15. Inclined portions 30Aa, 30Ba having guide surfaces that are inclined to open outward at an angle of approximately 45 degrees with respect to a plane (vertical surface), and fixed portions 30Ab, 30Bb fixed to the partition wall 15, It is comprised. The fixing portions 30Ab and 30Bb are disposed in the vicinity of the center side on the back surfaces of the left and

right outlets

23A and 23B, and the inclined portions 30Aa and 30Ba are obliquely extended so as to cover the center side of the left and

right outlets

23A and 23B. Yes. The fixing portions 30Ab and 30Bb are attachment portions for fixing to the partition wall 15. The fixing portions 30Ab and 30Bb are fixed to the partition wall 15 by caulking or welding. In the first embodiment, each of the first flow path forming portion 30A and the second flow path forming portion 30B is formed by bending a metal plate along a straight line. The material of the first flow path forming portion 30A and the second flow path forming portion 30B is not limited to metal, and any material having heat resistance that can maintain the shape can be used.

In the first embodiment, the first flow path forming portion 30A and the second flow path forming portion 30B have inclined portions 30Aa and 30Ba having an angle of approximately 45 degrees with respect to the plane (vertical surface) of the partition wall 15. Then, although it demonstrates by the structure opened outward, this angle is determined in the specification in a heating cooker. In accordance with the operating characteristics of the cooking device, for example, it is set to open outward in an angle range between 30 degrees and 70 degrees with respect to the plane (vertical surface) of the partition wall 15.

In addition, as shown in FIG. 3, the first flow path forming portion 30A and the second flow path forming portion 30B in the first embodiment are formed by bending a rectangular plate material, and are bent lines that are straight lines. Are arranged in the vertical direction. The first flow path forming portion 30A and the second flow path forming portion 30B are formed to be shorter than the vertical length of the partition wall 15 and longer than the vertical length of the left and

right outlets

23A and 23B. It is provided on the center side (suction port side) of the

air outlets

23A and 23B.

In addition, although the 1st flow path formation part 30A and the 2nd flow path formation part 30B demonstrated in the example formed longer than the length of the up-down direction of left-

right outlet

23A, 23B, this invention has such a structure. It is not limited, You may form shorter than the length of the up-down direction of a left-right blower outlet according to the specification etc. of the said heating apparatus.

In the heating cooker according to the first embodiment, the main body 1 including the heat source chamber 8 having the blower fan 9 and the heater 11 and the drive chamber 12 having the motor 13 is secured while ensuring the internal volume of the heating chamber 2. In order to reduce the depth dimension, the depth dimension of the heat source chamber 8 and the drive chamber 12 is formed small.

In the cooking device of the first embodiment, the blower fan 9 which is a centrifugal fan that does not deteriorate the blowing performance even if the depth dimension is small is used, and the depth dimension of the central portion that is the suction portion can be reduced. A blower fan 9 is used. For this reason, the heat source chamber rear wall 14 through which the shaft of the motor 13 passes has a shape in which a portion close to the motor 13 is recessed on the heating chamber side (front surface side), and the motor 13 is disposed inside the recess. It is configured as follows. As a result, the dimension in the depth direction of the heat source chamber 8 and the drive chamber 12 is reduced.

As shown in FIG. 1, in the heating cooker according to the first embodiment, the heat source chamber back wall 14 is formed as described above, and the motor 13 is arranged inside the recess of the heat source chamber back wall 14. The depth dimension of the part (center part) close to the motor 13 of the heat source chamber 8 is made small. In the heat source chamber 8, the depth dimension of the portion other than the portion close to the motor 13 (outer peripheral portion) is larger than that of the central portion, and an arrangement space for the heater 11 as a heating portion as a heat source is secured. Moreover, in the heating cooker of Embodiment 1, the space for arrange | positioning the 1st flow path formation part 30A and the 2nd flow path formation part 30B in the predetermined position on the outer side of the heater 11 is ensured. . In particular, an air flow path in the heat source chamber 8 formed by the first flow path forming part 30A and the second flow path forming part 30B is secured. In addition, the heater 11 is arrange | positioned so that the center position of the thickness (length in the depth direction) of the heater 11 may be located behind the center position of the length in the depth direction of the blades of the blower fan 9 inside the heat source chamber 8. ing.

Hereinafter, the heating operation in the heating cooker according to the first embodiment of the present invention will be described.
In the heating cooker according to the first embodiment, for example, when performing oven cooking, the cooking pan 5 on which the article to be heated 10 such as a cookie is placed is related to the support portion 4 provided on the left and right wall surfaces of the heating chamber 2. Stop and insert into the heating chamber 2. The cooking pan 5 is pushed in until it comes into contact with the partition wall 15 which is the back wall of the heating chamber 2, the door 14 is closed, and the heating chamber 2 becomes a heatable space. Oven cooking in the cooking device is started by operating a predetermined button on an operation unit (not shown) provided on the front surface of the main body 1.

In the operation section, cooking conditions such as the heating time and heating temperature of the article to be heated 10 are set. A signal indicating the cooking conditions set in the operation unit is input to the control unit 24 constituted by a microcomputer. The control unit 24 drives and controls the heater 11 and the motor 13 based on a signal indicating cooking conditions.

Rotation of the motor 13 causes the blower fan 9, which is a centrifugal fan, to start rotating. By the rotation operation of the blower fan 9, a spiral outward air flow is blown out from the outer peripheral portion of the blower fan 9. The air flow blown out from the blower fan 9 is heated by the heater 11 disposed so as to surround the outer peripheral portion of the blower fan 9 to become a high-temperature air flow (hot air). A part of the air flow from the blower fan 9 contacts the inclined portions 30Aa and 30Ba of the first flow path forming portion 30A and the second flow path forming portion 30B provided at the left and right positions of the blower fan 9. Then, the heat source chamber is guided toward the heat source chamber rear wall 14 which is behind the heat source chamber 8. Thus, the air flow guided to the rear side of the heat source chamber 8 flows more toward the heater 11 disposed slightly rearward than the blower fan 9 and is heated to become a high-temperature air flow (hot air).

In the hot air sent to the outer peripheral side by the blower fan 9 and heated by the heater 11 as described above, the hot air sent to the upper side of the blower fan 9 is blown out from the upper outlet 17A in the partition wall 15 to the heating chamber 2, The hot air sent out below the blower fan 9 is blown out into the heating chamber 2 from the lower blowout port 17B. Since these hot airs are spiral in the direction of rotation of the blower fan 9 and have an outward wind direction, the hot air from the upper outlet 17A is directed toward the ceiling surface 21 and the right side surface 19 of the heating chamber 2. The hot air from the lower outlet 17B flows in the direction of the bottom surface 20 and the left side surface 18 of the heating chamber 2. As described above, the shapes of the upper air outlet 17A and the lower air outlet 17B that are configured by a plurality of punching holes are strips that are elongated in the horizontal direction, and the left air outlet 23A and the right that are configured by a plurality of punching holes. Compared with the shape of the blower outlet 23B, it is elongate (refer FIG. 3).

In the heat source chamber 8, the hot air sent to the outer peripheral side by the blower fan 9 and heated by the heater 11 is sent to the left and right directions of the blower fan 9, and the first flow path forming unit 30A and the second Is brought into contact with the flow path forming portion 30 B and guided toward the heat source chamber back wall 14 which is the back surface of the heat source chamber 8. The hot air guided to the heat source chamber back wall 14 flows along the heat source chamber back wall 14, changes the wind direction at the left and right ends of the heat source chamber 8, and again the first flow path forming unit 30 A and the second flow path. It goes in the direction of the forming part 30B. Therefore, the hot air is guided by the back surfaces of the first flow path forming portion 30A and the second flow path forming portion 30B and blown out from the

respective outlets

23A and 23B to the heating chamber 2.

At this time, the hot air blown out from the left and

right outlets

23A and 23B into the heating chamber 2 flows in the direction from the left and right end portions toward the center in the heat source chamber 8, so It blows out to head. That is, the hot air blown out from the left and

right outlets

23A and 23B to the heating chamber 2 flows toward the heated object 10 in the heating chamber 2 and flows so that the heated object 10 can be heated intensively. Therefore, the hot air blown from the left and

right outlets

23A and 23B to the heating chamber 2 does not directly heat the wall surface of the heating chamber 2.

As described above, according to the heating cooker of the first embodiment, the hot air blown from the heat source chamber 8 to the inside of the heating chamber 2 through the left and

right outlets

23A and 23B is transferred to the object to be heated 10. It becomes possible to concentrate. As a result, in the heating cooker according to the first embodiment, the heating loss due to the hot air heating only the wall surface of the heating chamber 2 can be greatly suppressed, the heating chamber is heated efficiently, and the heated object is heated. Efficient cooking for food becomes possible. Therefore, according to the heating cooker of Embodiment 1, the preheating time and cooking time of a heating chamber can be shortened, and the cooking speed can be improved.

Moreover, in the heating cooker of Embodiment 1, the heat source room 8 arrange | positioned in the back of the heating chamber 2 by forming a dent in the heat source room back wall, and arrange | positioning the motor 13 in the dent. It is possible to achieve a reduction in the thickness of the combined portion of the drive chamber 12 and the drive chamber 12. The configuration of the heating cooker according to the first embodiment can reduce the depth of the entire apparatus while ensuring the capacity of the heating chamber, and can provide a heating cooker having high energy saving performance.

In addition, in the heating cooker of Embodiment 1, although demonstrated in the example which used the substantially annular shaped sheathed heater as the heater 11, by using the heater which provided the several radiation fin on the surface of the sheathed heater, Heating of the air from the blower fan 9 can be performed with high efficiency.

In the heating cooker of the first embodiment, the first flow path forming portion 30A and the second flow path forming portion 30B are fixed to the partition wall 15 which is the back wall of the heating chamber 2 (fixed by caulking or welding). ), The first flow path forming portion 30A and the second flow path forming portion 30B are configured to be fixed to other members forming the heat source chamber 8, and the left and right outlets 23A, You may arrange | position so that it may become a predetermined position with respect to 23B.

(Embodiment 2)
Hereinafter, the heating cooker according to the second embodiment of the present invention will be described with reference to FIG. In the heating cooker according to the second embodiment of the present invention, the difference from the heating cooker according to the first embodiment is the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker of the second embodiment, the flow path forming unit will be described in particular, and the elements having the same functions and configurations as those of the heating cooker of the first embodiment are denoted by the same reference numerals, The description of the first embodiment is used.

FIG. 4 is a plan cross-sectional view showing a heat source chamber and a driving chamber behind the heating chamber in the cooking device of the second embodiment. As shown in FIG. 4, the difference between the heating cooker according to the second embodiment and the heating cooker according to the first embodiment is that the first flow path is provided in the partition wall 15 that is the back wall of the heating chamber 2. This is the shape of the portion 40A and the second flow path forming portion 40B. In the heating cooker according to the second embodiment, the inclined portions 40Aa and 40Ba in the first flow path forming portion 40A and the second flow path forming portion 40B are formed of curved surfaces. 40 A of 1st flow-path formation parts are comprised by inclination part 40Aa from which the surface facing left blower outlet 23A becomes a concave surface, and fixing part 40Ab for fixing to the partition 15 which is the back wall of the heating chamber 2. As shown in FIG. Yes. The second flow path forming portion 40B includes an inclined portion 40Ba having a concave surface facing the right outlet 23B and a fixing portion for fixing to the partition wall 15 in the same manner as the first flow path forming portion 40A. 40Bb.

In the heating cooker according to the second embodiment, the first flow path forming portion 40A and the second flow path forming portion 40B are described as being fixed to the partition wall 15 (fixed by caulking or welding). 40 A of 1st flow path formation parts and the 2nd flow path formation part 40B are fixed to the other member which forms the heat-source chamber 8, and it is arrange | positioned with respect to the left-

right outlet

23A, 23B in a predetermined position. You may comprise.

In the heat source chamber 8 of the heating cooker according to the second embodiment configured as described above, the hot air sent in the left-right direction of the blower fan 9 is a smooth curved surface in the inclined portion 40Aa of the first flow path forming portion 40A. The heat source chamber rear wall 14 which is the back wall of the heat source chamber is in contact with the guide surface which is a (convex surface) and the guide surface which is a smooth curved surface (convex surface) in the inclined portion 40Ba of the second flow path forming unit 40B. Led to. The hot air guided to the heat source chamber back wall 14 flows along the heat source chamber back wall 14, changes the wind direction at the left and right ends of the heat source chamber 8, and again in the direction of the inclined portion 40 Aa of the first flow path forming portion 40 A. Head. Then, the hot air is guided by the smooth curved surface (concave surface) on the back surface of the guiding surface of the inclined portion 40Aa and the smooth curved surface (concave surface) on the back surface of the inclined portion 40Ba, and is heated from the

respective outlets

23A and 23B. Blown out.

At this time, the hot air blown out from the left and

right outlets

23A and 23B to the heating chamber 2 flows in the heat source chamber 8 in the direction from the left and right end portions toward the center, and therefore from the left and

right outlets

23A and 23B. The air is blown out toward the approximate center of the heating chamber 2. That is, the hot air blown out from the left and

right outlets

23A and 23B to the heating chamber 2 flows toward the heated object 10 in the heating chamber 2 and flows so that the heated object 10 can be heated intensively.

Then, the angle formed between the curved end portion and the partition wall 15 is adjusted on the curved fixed portion side of each inclined portion (guide surface) in the first flow path forming portion 40A and the second flow path forming portion 40B. Thus, the direction of hot air blown out from the left and

right outlets

23A and 23B to the heating chamber 2 can be adjusted.

In the heating cooker of the second embodiment, the inclined portions 40Ab and 40Ba in the first flow path forming portion 40A and the second flow path forming portion 40B are formed with smooth curved surfaces (guide surfaces). The direction of the hot air blown out from the left and

right outlets

23A, 23B to the heating chamber 2 can be smoothly directed in the forward direction of the heating chamber 2 as compared with the heating cooker of the first embodiment. .

As described above, according to the cooking device of the second embodiment, the hot air blown from the heat source chamber 8 through the left and

right outlets

23A and 23B to the heating chamber 2 is smoothly redirected and applied from the front to the center. Can flow in the direction. As a result, the heating loss due to the hot air heating only the wall surface of the heating chamber 2 can be significantly suppressed, the inside of the heating chamber 2 is heated efficiently, and the object to be heated 10 is efficiently heated. Cooking is possible. Therefore, according to the heating cooker of Embodiment 2, the preheating time and cooking time of the heating chamber 2 can be shortened, and the cooking speed can be improved.

(Embodiment 3)
Hereinafter, the heating cooker according to the third embodiment of the present invention will be described with reference to FIGS. 5 and 6. In the heating cooker according to the third embodiment of the present invention, the difference from the heating cooker according to the first embodiment described above is the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker according to the third embodiment, the flow path forming unit will be described in particular, and elements having the same functions and configurations as those of the heating cooker according to the first embodiment are denoted by the same reference numerals, The description of the first embodiment is used.

FIG. 5 is a plan cross-sectional view showing a heat source chamber and a driving chamber behind the heating chamber in the heating cooker according to the third embodiment. 6 is a perspective view showing the inside of the heat source chamber shown in FIG. 5, in which the partition wall 15 which is the back wall of the heating chamber is removed.

As shown in FIGS. 5 and 6, in the heating cooker according to the third embodiment, each of the first flow path forming unit 50 A and the second flow path forming unit 50 B provided in the heat source chamber 8 is provided. It has inclination part 50Aa, 50Ba and wing | blade part 50Ac, 50Bc.

The first flow path forming portion 50A is formed so as to cover with a predetermined interval from the back surface of the left outlet 23A. The first flow path forming portion 50A is continuous with the inclined portion 50Aa inclined (about 45 degrees) with respect to the back surface of the partition wall 15 and the lead-out end portion of the inclined portion 50Aa and is parallel to the back surface of the partition wall 15. And a wing portion 50Ac. Here, the surface facing the heat source chamber back wall 14 in the inclined portion 50Aa and the blade portion 50Ac is a guide surface. A part of the hot air sent out in the centrifugal direction by the blower fan 9 is guided toward the heat source chamber rear wall 14 by the guide surface.

Similarly, the second flow path forming portion 50B is formed so as to cover with a predetermined interval from the back surface of the right outlet 23B. The second flow path forming portion 50B is continuous with the inclined portion 50Ba inclined with respect to the back surface of the partition wall 15 (about 45 degrees) and the lead-out end portion of the inclined portion 50Ba, and is parallel to the back surface of the partition wall 15. And a wing part 50Bc having the structure. Here, a surface facing the heat source chamber back wall 14 in the inclined portion 50Ba and the blade portion 50Bc is a guide surface.

The wing parts 50Ac and 50Bc in the first flow path forming part 50A and the second flow path forming part 50B are arranged with a predetermined distance from the rear wall 14 of the heat source chamber, and the wing parts 50Ac and 50Bc and the heat source. An air flow path through which hot air passes is formed between the rear wall 14 and the room.

As shown in the perspective view of FIG. 6, the first flow path forming portion 50 A and the second flow path forming portion 50 B are extended to the upper and lower ends of the heat source chamber 8, The length is the same as the length of the direction (vertical direction). Accordingly, the first flow path forming portion 50A and the second flow path forming portion 50B are fixed at the upper and lower end portions of the inner case 22 forming the heat source chamber 8, and are disposed at predetermined positions.

In the heating cooker of the third embodiment configured as described above, the hot air sent in the left-right direction of the blower fan 9 in the heat source chamber 8 is the same as the heating cooker of the first and second embodiments described above. The first flow path forming portion 50A comes into contact with the slope of the inclined portion 50Aa and the slope of the inclined portion 50Ba of the second flow path forming portion 50B, and is guided toward the heat source chamber rear wall 14. The hot air guided to the heat source chamber back wall 14 flows along the heat source chamber back wall 14, changes the air direction at the left and right ends of the heat source chamber 8, and again the first flow path forming unit 50 A and the second flow path. It flows toward the forming part 50B. The hot air is guided to the inclined surface (back surface) of the inclined portion 50Aa of the first flow path forming portion 50A and the inclined surface (back surface) of the inclined portion 50Ba of the second flow path forming portion 50B, and each outlet 23A. , 23B to the heating chamber 2.

At this time, the hot air blown out from the left and

right outlets

As described above, according to the heating cooker of the third embodiment, hot air blown from the heat source chamber 8 through the left and

right outlets

23A and 23B to the heating chamber 2 is intensively flowed to the object to be heated 10. Can do. As a result, the heating loss caused by hot air heating only the wall surface of the heating chamber 2 can be greatly suppressed, the heating chamber can be heated efficiently, and efficient cooking can be performed on the object to be heated. It becomes. Therefore, according to the heating cooker of Embodiment 3, the preheating time and cooking time of a heating chamber can be shortened, and the cooking speed can be improved.

(Embodiment 4)
Hereinafter, the heating cooker according to the fourth embodiment of the present invention will be described with reference to FIGS. 7A and 7B and FIG. In the heating cooker according to the fourth embodiment of the present invention, the difference from the heating cooker according to the first embodiment described above is the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker according to the fourth embodiment, the flow path forming unit will be particularly described, and the elements having the same functions and configurations as those of the heating cooker according to the first embodiment are denoted by the same reference numerals, The description of the first embodiment is used.

7A and 7B are plan sectional views showing a heat source chamber and a driving chamber behind the heating chamber in the heating cooker according to the fourth embodiment. FIG. 7A shows a state where the temperature of the flow path forming portion is equal to or lower than a predetermined temperature, and FIG. 7B shows a state where the temperature of the flow path forming portion exceeds the predetermined temperature. FIG. 8 is a perspective view of the partition 15 and the like in the heating cooker according to the fourth embodiment as viewed from the back side.

In the heat source chamber 8 at the rear of the heating chamber 2 in the heating cooker according to the fourth embodiment, the suction port 16 formed in the central portion of the partition wall 15 and the left outlet 23A formed on the left side of the suction port 16 A first flow path forming part 51A is formed between the two. Similarly, a second flow path forming part 51 B is formed between the suction port 16 and the right outlet 23 B formed on the right side of the suction port 16. The first flow path forming portion 51 A and the second flow path forming portion 51 B are formed so that one end is fixed to the back surface of the partition wall 15 and the other end protrudes obliquely into the internal space of the heat source chamber 8. Yes. The protruding end portions of the first flow path forming portion 51A and the second flow path forming portion 51B are arranged at a predetermined distance from the heat source chamber back wall 14. Further, the first flow path forming portion 51A and the second flow path forming portion 51B are provided between the heater 11 disposed so as to surround the blower fan 9 and the

respective outlets

23A, 23B. .

As shown in FIGS. 7A and 7B, the first flow path forming portion 51A and the second flow path forming portion 51B at the left and right positions of the suction port 16 on the back surface of the partition wall 15 are planes formed by the partition wall 15. Inclining portions 51Aa and 51Ba that incline outward and fixing portions 51Ab and 51Bb fixed to the partition wall 15 are provided. The fixing portions 51Ab and 51Bb are disposed in the vicinity of the center of the back surfaces of the left and

right outlets

23A and 23B, and the inclined portions 51Aa and 51Ba are obliquely extended so as to cover the back surfaces of the left and

right outlets

23A and 23B. Yes. There is a predetermined distance between the projecting end portions of the inclined portions 51Aa and 51Ba and the heat source chamber rear wall 14, and an air flow path is secured. The fixing portions 51Ab and 51Bb are attachment portions for fixing to the partition wall 15. The fixing portions 51Ab and 51Bb are fixed to the partition wall 15 by caulking or welding.

In the fourth embodiment, each of the first flow path forming portion 51A and the second flow path forming portion 51B is a bimetal formed by bonding two metal plates having different coefficients of thermal expansion, or a shape memory. Made of alloy. The first flow path forming part 51A and the second flow path forming part 51B configured as described above have a function of changing the wind direction according to the temperature of hot air.

As shown in FIG. 7A, when the temperature of the first flow path forming part 51A and the second flow path forming part 51B is equal to or lower than a predetermined temperature, the first flow path forming part 51A and the second flow path forming part 51B. The inclined portions 51Aa and 51Ba are attached to the partition wall 15 so as to open outward at an angle of 45 degrees. Since the first flow path forming part 51A and the second flow path forming part 51B are formed of a bimetal obtained by bonding two metal plates having different thermal expansion coefficients or a shape memory alloy, It has an internal wind direction change function.

As shown in FIG. 7B, in the state where the temperature of the first flow path forming part 51A and the second flow path forming part 51B exceeds a predetermined temperature, the first flow path forming part 51A and the second flow path The inclined portions 51Aa and 51Ba in the forming portion 51B are inclined outward with respect to the partition wall 15 at an angle of about 60 degrees. This inclination angle is preferably set so as to change within a range of 30 to 70 degrees.

In the heating cooker according to the fourth embodiment, as shown in FIG. 8, the first flow path forming part 51A and the second flow path forming part 51B provided at the left and right positions of the suction port 16 are It is shorter than the length of the partition wall 15 and longer than the lengths of the left outlet 23A and the right outlet 23B, and is provided so as to cover at least the central region of the left outlet 23A and the right outlet 23B.

In addition, although the 1st flow path formation part 51A and the 2nd flow path formation part 51B were demonstrated in the example formed longer than the length of the up-down direction of left-

right outlet

In the heating cooker according to the fourth embodiment, the main body 1 including the heat source chamber 8 having the blower fan 9 and the heater 11 and the drive chamber 12 having the motor 13 is secured while securing the internal volume of the heating chamber 2. In order to reduce the depth dimension, the depth dimension of the combined portion of the heat source chamber 23 and the drive chamber 12 is reduced.

In the cooking device of the fourth embodiment, the blower fan 9 which is a centrifugal fan that does not deteriorate the blowing performance even if the depth dimension is small is used, and the depth dimension of the central portion that is the suction portion can be reduced. A blower fan 9 is used. Therefore, the heat source chamber rear wall 14 through which the shaft of the motor 13 passes has a shape in which a portion close to the motor 13 is recessed on the heating chamber side (front surface side), and the motor 13 is disposed inside the recess. It is configured. As a result, the dimension in the depth direction of the heat source chamber 8 and the drive chamber 12 is reduced.

As shown in FIGS. 7A and 7B, in the heating cooker according to the fourth embodiment, the heat source chamber rear wall 14 is configured as described above, and the motor 13 is disposed in the recess. The depth dimension of the portion (center portion) close to the motor 13 is reduced. In the heat source chamber 8, the depth dimension of the portion other than the portion close to the motor 13 (outer peripheral portion) is larger than that of the central portion, and the arrangement space for the heater 11 is secured. In the heating cooker according to the fourth embodiment, a space is provided for disposing the first flow path forming portion 51A and the second flow path forming portion 51B at a predetermined position outside the heater 11. . In particular, an air flow path in the heat source chamber 8 formed by the first flow path forming part 51A and the second flow path forming part 51B is secured. In the heat source chamber 8, the heater 11 is disposed slightly behind the center position of the length of the blades of the blower fan 9 in the depth direction.

Hereinafter, the heating operation in the heating cooker according to the fourth embodiment of the present invention will be described.
In the heating cooker according to the fourth embodiment, for example, in the case of oven cooking, the cooking dish 5 on which the heated object 10 such as roast chicken is placed in the center is attached to the support portion 4 provided on the left and right wall surfaces of the heating chamber 2. It is locked and inserted into the heating chamber 2. The cooking pan 5 is pushed in until it comes into contact with the partition wall 15, the door 14 is closed, and the heating chamber 2 becomes a heatable space. Oven cooking in the cooking device is started by operating a predetermined button on an operation unit (not shown) electrically connected to the control unit 24.

In the operation section, cooking conditions such as the heating time and heating temperature of the article to be heated 10 are set. A signal indicating the cooking conditions set in the operation unit is input to the control unit 24 constituted by a microcomputer. The control unit 24 controls the heater 11 and the motor 13 based on a signal indicating cooking conditions.

The blower fan 9 starts rotating by the rotation of the motor 13. By the rotation operation of the blower fan 9, an air flow that is blown outward from the outer peripheral portion of the blower fan 9 that is a centrifugal fan is generated. The air flow from the blower fan 9 is heated by the heater 11 disposed so as to surround the outer peripheral portion of the blower fan 9 to become a high-temperature air flow (hot air). Part of the air flow from the blower fan 9 contacts the inclined portions 51Aa and 51Ba of the first flow path forming portion 51A and the second flow path forming portion 51B provided at the left and right positions of the blower fan 9. Then, it is guided toward the heat source chamber rear wall 14 that is behind the heat source chamber 8. Thus, the air flow guided to the rear side of the heat source chamber 8 flows more toward the heater 11 disposed slightly rearward than the blower fan 9 and is heated to become a high-temperature air flow (hot air).

In the hot air sent to the outer peripheral side by the blower fan 9 and heated by the heater 11 as described above, the hot air sent to the upper side of the blower fan 9 is blown out from the upper outlet 17A in the partition wall 15 to the heating chamber 2, The hot air sent out below the blower fan 9 is blown out from the lower outlet 17B to the heating chamber 2 (see FIG. 8). Since these hot airs are spiral in the direction of rotation of the blower fan 9 and have an outward wind direction, the hot air from the upper outlet 17A is directed toward the ceiling surface 21 and the right side surface 19 of the heating chamber 2. The hot air from the lower outlet 17B flows in the direction of the bottom surface 20 and the left side surface 18 of the heating chamber 2.

In the heat source chamber 8, the hot air sent to the outer peripheral side by the blower fan 9 and heated by the heater 11 is sent to the left and right directions of the blower fan 9. The air flow direction is changed in the heat source chamber 8 and the air is blown out from the

respective outlets

23A and 23B to the heating chamber 2.

In the initial stage of the heating operation shown in FIG. 7A, for example, when the temperature of the first flow path forming portion 51A and the second flow path forming portion 51B is equal to or lower than a predetermined temperature (for example, 150 ° C. or lower) The hot air from the fan 9 comes into contact with the inclined portions 51Aa and 51B, which are the guide surfaces of the first flow path forming portion 51A and the second flow path forming portion 51B, and is directed toward the heat source chamber rear wall 14. It flows along the heat source chamber back wall 14. Then, the air flow direction is changed at the left and right end portions in the heat source chamber 8, and the air flow is again directed toward the first flow path forming portion 51A and the second flow path forming portion 51B. Therefore, the hot air is guided by the back surfaces of the first flow path forming part 51A and the second flow path forming part 51B, and blown out from the

respective outlets

23A, 23B to the heating chamber 2. For this reason, hot air from the outlets 23 A and 23 B is blown out toward the approximate center of the heating chamber 2.

In the heating operation shown in FIG. 7B, for example, when the temperature of the first flow path forming portion 51A and the second flow path forming portion 51B exceeds a predetermined temperature (for example, exceeds 150 ° C.), the blower fan The hot air from 9 comes into contact with the inclined portions 51Aa and 51B of the first flow path forming portion 51A and the second flow path forming portion 51B, and is directed toward the heat source chamber rear wall 14 to be heated. 14, the air direction is changed, and the air is guided again to the first flow path forming portion 51A and the second flow path forming portion 51B, and blown out from the

respective outlets

23A and 23B to the heating chamber 2. For this reason, hot air from the outlets 23 A and 23 B is blown out substantially in parallel to the heating chamber 2 in the forward direction.

As described above, in the heating operation of the heating cooker according to the fourth embodiment, the direction of hot air blown from the left and

right outlets

23A and 23B to the heating chamber 2 is the initial stage of heating, and the subsequent heating operation. It is configured to be different in stages. As a result, the heating chamber can be efficiently heated in the heating operation, and cooking can be performed according to the condition of the object to be heated in the heating chamber. The heating cooker according to the fourth embodiment is configured such that hot air blown from the left and

right outlets

23A and 23B toward the heating chamber 2 is directed toward the object to be heated 10 in the heating chamber 2 until a predetermined condition is satisfied. Therefore, the heated object 10 can be heated intensively.

As described above, according to the heating cooker of the fourth embodiment, the hot air blown from the heat source chamber 8 through the left and

right outlets

23A and 23B into the heating chamber 2 is concentrated on the object to be heated 10. Can do. As a result, in the heating cooker according to the fourth embodiment, the heating loss due to the hot air heating only the wall surface of the heating chamber 2 can be significantly suppressed, and efficient heating cooking for the object to be heated can be achieved. It becomes possible. Therefore, according to the heating cooker of Embodiment 4, the preheating time and cooking time of a heating chamber can be shortened, and the cooking speed can be improved.

In the heating cooker according to the fourth embodiment, the temperature of the heater 11 rises as the heating time elapses, and the hot air temperature rises, whereby the first flow path forming unit 51A made of bimetal and the second The flow path forming part 51B is deformed due to the difference in the coefficient of thermal expansion between the bonded metal plates. That is, as shown in FIG. 7B, the inclined portions 51Aa and 51Ba (guide surfaces) of the first flow path forming portion 51A and the second flow path forming portion 51B have a larger inclination angle with respect to the partition wall 15, It rises in a direction perpendicular to the partition wall 15.

As described above, in the heating operation of the heating cooker according to the fourth embodiment, the left and

right outlets

23A and 23B are changed by the change in the inclination angle of the first flow path forming portion 51A and the second flow path forming portion 51B. The direction of the hot air blown into the heating chamber 2 is changed from the direction toward the center of the heating chamber 2 to the direction of wrapping the food that is the object to be heated 10 so that the hot air does not directly hit the object 10 to be heated. The wind direction is changed. Therefore, in the case where the object to be heated 10 is a food that easily causes unevenness in the baked color, the direction of the wind can be changed so that the hot air does not directly hit the food when the hot air reaches a high temperature. For this reason, the heating cooker of Embodiment 4 can prevent unevenness of the baking color in the article 10 to be heated.

As mentioned above, in the heating cooker of Embodiment 4, since the 1st flow path formation part 51A and the 2nd flow path formation part 51B are provided, by the ventilation fan 9 and the heater 11 in the heat source chamber 8 The generated hot air is blown out from the left and right outlets 23 A and 23 B toward the center in the heating chamber 2, and the wall surfaces constituting the heating chamber 2 are not directly heated. As a result, the cooking device of the fourth embodiment is a cooking utensil that saves energy and can efficiently heat the object to be heated.

Further, by changing the angle of the inclined portion of each inclined portion 51Aa, 51Ba (guide surface) of the first flow path forming portion 51A and the second flow path forming portion 51B, the left and

right outlets

23A, 23B The direction of hot air can be changed during the heating operation. As a result, the heating cooker according to the fourth embodiment wraps the object to be heated in a wind direction along the side wall surface without directly applying hot air in the case of the object to be heated whose baking color tends to be uneven. It is also possible to heat.

Further, in the configuration of the heating cooker according to the fourth embodiment, hot air is blown out toward the center of the heating chamber during preheating of the heating chamber 2, and the object to be heated is wrapped during the cooking operation in which the hot air exceeds a predetermined temperature. Alternatively, hot air may be blown out. The cooking device configured in this way can also change the direction of hot air blown into the heating chamber to heat the object to be heated in the heating chamber, thereby improving the cooking performance.

Further, when the hot air from the

outlets

23A and 23B directly hits the object to be heated 10 in the heating chamber 2, the hot air emitted from the

outlets

23A and 23B immediately depends on the conditions such as the temperature of the hot air and the wind speed. May flow in a short circuit and return, and the hot air may not be sufficiently distributed in the heating chamber 2. In addition, when hot air from the

air outlets

23A and 23B directly hits the object to be heated 10 in the heating chamber 2, the object to be heated may not be efficiently heated depending on conditions. In such a case, in the cooking device of the fourth embodiment, the direction of the hot air can be changed during the heating operation, so that the heating chamber 2 can be efficiently heated and It becomes possible to cook the heated object 10 efficiently.

(Embodiment 5)
Hereinafter, a heating cooker according to a fifth embodiment of the present invention will be described with reference to FIGS. In the heating cooker according to the fifth embodiment of the present invention, the difference from the heating cooker according to the first embodiment is the shape of the flow path forming unit provided in the heat source chamber, the configuration of the control unit, and the control method. is there. Therefore, in the heating cooker of the fifth embodiment, the flow path forming unit and the control unit will be described in particular, and elements having the same functions and configurations as those of the heating cooker of the first embodiment are denoted by the same reference numerals, For the description, the description of the first embodiment is used.

FIG. 9 is a plan cross-sectional view showing a heat source chamber and a drive chamber behind the heating chamber in the heating cooker according to the fifth embodiment. FIG. 10 is a block diagram illustrating a configuration of the control unit 24 in the heating cooker according to the fifth embodiment. FIG. 11 is a pattern diagram showing an operation process of cooking by the heating cooker according to the fifth embodiment.

In the heating cooker according to the fifth embodiment, as shown in FIG. 9, each of the first flow path forming part 52 A and the second flow path forming part 52 B provided at the left and right positions of the partition wall 15 Are formed so as to cover the

outlets

23A and 23B. The first flow path forming part 52A and the second flow path forming part 52B are fixed to the partition wall 15 and curved surface parts 52Aa, 52Ba each having a concave surface that faces the

air outlets

23A, 23B. Fixed portions 52Ab and 52Bb. The curved surface portions 52Aa and 52Ba are formed so as to cover the back surfaces of the left and

right outlets

23A and 23B, and a predetermined distance is provided between the protruding end portions of the curved surface portions 52Aa and 52Ba and the heat source chamber rear wall 14. . The fixing portions 52Ab and 52Bb are attachment portions for fixing to the partition wall 15. The fixing portions 52Ab and 52Bb are fixed to the partition wall 15 by caulking or welding.

The first flow path forming section 52A and the second flow path forming section 52B configured as described above send part of the hot air heated by the heater 11 toward the heat source chamber back wall 14 to thereby generate the heat source chamber 8. It is flowing so as to largely detour inside. In addition, the first flow path forming part 52A and the second flow path forming part 52B guide again the hot air that has largely bypassed the inside of the heat source chamber 8 to the heating chamber 2 from the left and

right outlets

23A, 23B. And it is comprised so that it may blow out in the direction of the door 3 toward the front. Therefore, in the heating cooker of the fifth embodiment, the direction of hot air blown from the left and

right outlets

23A, 23B to the heating chamber 2 is different from the configuration of the heating cooker of the first embodiment described above. It becomes the structure which can be smoothly changed to the direction applied from the front of the heating chamber 2 to the center.

As shown in FIG. 10, in the cooking device of the fifth embodiment, the control unit 24 is provided with a timer unit 25, an air direction determination unit 26, an operation condition storage unit 27, and a rotation speed control unit 28. The timer unit 25 measures an operation time such as cooking. The wind direction determination unit 26 is a part that determines and determines the direction of hot air supplied into the heating chamber 2.

The operation condition storage unit 27 stores predetermined operation conditions during the cooking operation of each driving component such as the motor 13 electrically connected to the control unit 24. The rotational speed control unit 28 is a part capable of controlling the air direction and the air speed of the hot air generated by changing the rotational speed of the motor 13 of the blower fan 9 to control the air direction in the heating chamber 2. This part constitutes the wind direction changing means.

In the heating cooker according to the fifth embodiment configured as described above, the user does not first put in the cooking pan 5, but preheats to a predetermined temperature (for example, 250 ° C.) by operating a button in an operation unit (not shown). Select the mode to start the preheat operation. When the preheating operation starts, as shown in FIG. 11, the timer unit 25 starts measuring the elapsed time in the preheating mode. In FIG. 11, the horizontal axis indicates time, and the start time of the preheating mode is Ts.

Also, simultaneously with the start of the preheating operation, the control unit 24 starts energizing the heater 11 and the motor 13. At this time, the wind direction determination unit 26 determines based on the operation condition of the motor 13 in the preheating mode stored in the operation condition storage unit 27 of the control unit 24, and the rotation number control unit 28 sets the rotation number of the motor 13 to “medium”. Set to "Speed".

In the preheating mode, when the motor 13 set to “medium speed” is driven, the blower fan 9 rotates and is energized by the blower fan 9 to send hot air in the centrifugal direction. A part of the hot air from the blower fan 9 is guided to the first flow path forming part 52A and the second flow path forming part 52B and blown out from the left and

right air outlets

23A, 23B in the direction in front of the heating chamber 2. The Since the hot air blown out at this time is not fast, the hot air blown from the air outlets 23 A and 23 B is directed toward the center of the heating chamber 2.

Therefore, the wall surface of the heating chamber 2 is not directly blown by the hot air from the left and

right outlets

23A and 23B, and the temperature of the wall surface of the heating chamber 2 does not become higher than the air temperature in the heating chamber 2. . For this reason, in the heating cooker of the fifth embodiment, the wall surface temperature of the heating chamber 2 does not become higher than the air temperature in the heating chamber 2, and the heat radiation from the wall surface of the heating chamber 2 to the outside decreases. The heating efficiency becomes high, and the preheating operation can be completed in a relatively short time with high efficiency.

In the heating cooker of the fifth embodiment, when the temperature in the heating chamber 2 reaches a predetermined temperature (for example, 250 ° C.), the user is notified of the completion of the preheating operation by a notification sound (indicator light) or the like. It is configured to inform you. When the user recognizes the completion of the preheating operation by a notification sound or the like, the cooking pan 5 on which the object to be heated 10 such as roast chicken is placed is put into the heating chamber 2 and the door 3 of the heating chamber 2 is closed. Thereafter, the user operates a predetermined button on the operation unit (not shown) to start the cooking operation (oven mode) of the oven cooking in the heating cooker (oven mode start time T1).

At this time, the timer unit 25 starts measuring the elapsed time in the oven mode. At the same time, the wind direction determination unit 26 determines the operation condition of the motor 13 based on the operation condition of the motor 13 in the oven mode stored in the operation condition storage unit 27. The rotation speed control unit 28 to which the signal from the wind direction determination unit 26 is input sets the rotation speed of the motor 13 to “medium speed” in the first stage of the oven mode.

When the wind direction determination unit 26 detects that a predetermined time (for example, 2 minutes) has elapsed from the start of the oven mode based on the signal input from the timer unit 25, the rotation speed control unit 28 receives the signal from the wind direction determination unit 26. Based on the signal, the rotational speed of the motor 13 is changed to “high speed” (high speed operation start time T2 in the oven mode).

In the oven mode, when the motor 13 is changed to high-speed rotation, the hot air from the blower fan 9 is increased, and is guided to the first flow path forming part 52A and the second flow path forming part 52B to blow the left and right blowers. It blows off in the direction ahead of the heating chamber 2 from

outlet

23A, 23B. At this time, the hot air blown out from the

air outlets

23A and 23B has a sufficient wind speed, so that it is not pulled by the suction flow of the suction port 16 and flows in a substantially parallel wind direction to the left and right side walls. That is, hot air from the air outlets 23 A and 23 B is heated so as to wrap the object to be heated 10 without being directly blown against the object 10 to be heated.

According to the cooking device of the fifth embodiment configured as described above, the hot air generated by the blower fan 9 and the heater 11 in the heat source chamber 8 is directly from the two left and

right outlets

23A and 23B. Without being blown into the heating chamber 2, the air flow direction is largely changed in the left and right heat source chambers 8 by being guided by the first flow path forming portion 52 A and the second flow path forming portion 52 B. , 23B to the center of the heating chamber 2 or in a direction parallel to the left and right side walls. For this reason, in the configuration of the heating cooker according to the fifth embodiment, the hot air blown from the left and right outlets 23 A and 23 B is prevented from going directly to the wall surface of the heating chamber 2.

Therefore, in the configuration of the heating cooker according to the fifth embodiment, the hot air blown from the left and

right outlets

23A and 23B directly heats the wall surface of the heating chamber 2 so that the wall surface of the heating chamber 2 is closer to the object 10 to be heated. Is prevented from becoming hot. In the heating cooker according to the fifth embodiment, heat loss from the wall surface of the heating chamber is suppressed, and the object to be heated can be efficiently heated. As a result, the cooking device of Embodiment 5 can improve the speed of the preheating time and the cooking time in the heating chamber 2.

In the heating cooker of the fifth embodiment, the direction of hot air blown from the left and

right outlets

23A, 23B can be changed by the arrangement of the flow path forming portion and the adjustment of the rotational speed of the motor 13, so It is possible to heat the object 10 so as to wrap the object 10 in a wind direction parallel to the side wall of the heating chamber without directly applying hot air to the object 10.

Further, in the heating cooker according to the fifth embodiment, hot air is blown out toward the center of the heating chamber 2 during the preheating operation of the heating chamber 2, and heating is performed while changing the air direction so as to wrap the article to be heated 10 during cooking. It is possible. For this reason, the cooking device of Embodiment 5 can further improve cooking performance.

In a general cooking device, when hot air is directly applied to an object to be heated, depending on conditions such as the temperature of the hot air and the wind speed, the hot air blown out from the air outlet may return to the suction port in a short circuit. As a result, the hot air may not reach the inside of the heating chamber sufficiently. In such a case, a phenomenon may occur in which the heating efficiency for the object to be heated in the heating chamber is significantly reduced. In the heating cooker according to the fifth embodiment of the present invention, since the air direction is changed so as to wrap the object to be heated 10 during cooking, the heating efficiency for the object to be heated is high, and high cooking performance is achieved. Have.

Moreover, in the heating cooker of Embodiment 5, since the wind direction changing means which can change an air direction is provided by changing the rotation speed of the ventilation fan 9, it heats from right and left

blower outlets

23A and 23B. The direction of hot air blown into the chamber 2 can be easily changed during cooking.

The cooking device of the fifth embodiment has a control unit 24 that controls the wind direction by driving the wind direction changing means. The control unit 24 includes a timer unit 25 that measures the elapsed time of cooking, a wind direction determination unit 26 that determines and determines the direction of hot air based on an input from the timer unit 25, a motor 13 in each setting condition, and the like. An operating condition storage unit 27 that stores operating conditions is provided. The controller 24 controls the direction of hot air blown into the heating chamber 2 from the left and

right outlets

23A and 23B in the partition wall 15 in accordance with the heating process during the heating operation of the cooking device. Thus, since the heating cooker of Embodiment 5 can control the direction of the hot air blown from the left and

right outlets

23A and 23B, it is supplied into the heating chamber 2 according to the heating process. The hot air can be changed to a suitable wind direction.

In addition, in the heating cooker of Embodiment 5, although the structure which changes a wind direction in the wind direction determination part 26 based only on the input from the timer part 25 was demonstrated, this invention is limited to such a structure. Instead, for example, a sensor that detects the temperature and the color of the object to be heated 10 is provided, and the wind direction of the hot air from the

outlets

23A and 23B is changed in the wind direction determination unit 26 based on the outputs of these sensors. You may do it.

(Embodiment 6)
Hereinafter, the heating cooker according to the sixth embodiment of the present invention will be described with reference to FIG. The heating cooker according to the sixth embodiment of the present invention is different from the heating cooker according to the fifth embodiment described above in the control method of the control unit. Therefore, in the heating cooker of Embodiment 6, the control method of a control part is demonstrated especially. In the description of the sixth embodiment, elements having the same functions and configurations as those of the heating cookers of the first to fifth embodiments described above are denoted by the same reference numerals, and the description thereof is the same as that of the previous embodiments. Use the explanation.

FIG. 12 is a pattern diagram showing an operation process of heating cooking in the heating cooker according to the sixth embodiment.
As shown in FIG. 12, the user first selects the preheating mode by operating the buttons on the operation unit without starting the cooking pan 5, and starts the preheating operation. When the preheating operation starts, as shown in FIG. 12, the timer unit 25 starts measuring the elapsed time in the preheating mode. In FIG. 12, the horizontal axis indicates time, and the start time of the preheating mode is Ts.

In the preheating mode, when the motor 13 set to “medium speed” is driven, the blower fan 9 rotates and is energized by the blower fan 9 and sent out in the centrifugal direction. A part of the hot air from the blower fan 9 is guided to the first flow path forming part 52A and the second flow path forming part 52B and blown out from the left and

right air outlets

23A, 23B in the direction in front of the heating chamber 2. The Since the hot air blown out at this time is not fast, the hot air is pulled by the suction flow of the suction port 16 at the center, and the wind direction is directed toward the center in the heating chamber 2 from the

blowout ports

23A and 23B. Thus, since the hot air from

outlet

23A, 23B goes to the center direction in the heating chamber 2, it is highly efficient and preheating operation is completed in a comparatively short time.

In the heating cooker according to the sixth embodiment, when the temperature in the heating chamber 2 reaches a predetermined temperature (for example, 180 ° C.), the user is notified of the completion of the preheating operation by a notification sound (indicator light) or the like. It is configured as follows. When the user recognizes the completion of the preheating operation by a notification sound or the like, the cooking pan 5 on which the object to be heated 10 such as a cookie is placed is put into the heating chamber 2 and the door 3 of the heating chamber 2 is closed. Thereafter, the user operates a predetermined button on the operation unit (not shown) to start the cooking operation (oven mode) of the oven cooking in the heating cooker (oven mode start time T1).

At this time, the timer unit 25 starts measuring the elapsed time in the oven mode. At the same time, the wind direction determination unit 26 determines the operation condition of the motor 13 based on the operation condition of the motor 13 in the oven mode stored in the operation condition storage unit 27. The rotation speed control unit 28 to which the signal from the wind direction determination unit 26 is input sets the rotation speed of the motor 13 to “high speed” in the first stage of the oven mode. (Oven mode start time T1).

In the oven mode, when the motor 13 is set to high speed rotation, the amount of hot air from the blower fan 9 is increased and guided to the first flow path forming part 52A and the second flow path forming part 52B, and left and right Hot air increased in the forward direction of the heating chamber 2 is blown out from the

outlets

23A and 23B.

At this time, the hot air blown out from the

air outlets

23A and 23B has a sufficient wind speed, and therefore is not pulled by the suction flow of the suction port 16 and flows in a substantially parallel wind direction to the left and right side walls. That is, hot air from the air outlets 23 A and 23 B is heated so as to wrap the object to be heated 10 without being directly blown against the object 10 to be heated.

According to the heating cooker of the sixth embodiment configured as described above, the direction of hot air blown from the

outlets

23A and 23B can be changed, so that the baked color tends to be uneven. In the case of the object to be heated 10, it is possible to heat the object to be heated 10 so as to wrap the object to be heated by blowing it so as to flow parallel to the side wall of the heating chamber without directly applying hot air.

Moreover, in the heating cooker of Embodiment 6, it is comprised so that a hot air may be blown in the center direction in the heating chamber 2 during the preheating operation | movement of the heating chamber 2, and it wraps the to-be-heated material 10 during a cooking operation. It is configured to heat the hot air by changing the direction of the hot air so as to blow out the hot air. As a result, the heating cooker according to the sixth embodiment can simultaneously increase the speed of the preheating time and improve the cooking performance.

Furthermore, in the heating cooker according to the sixth embodiment, the direction of hot air blown out from the left and

right outlets

23A, 23B in the partition wall 15 into the heating chamber 2 can be changed according to each heating step during the heating operation. Therefore, the hot air blown into the heating chamber according to the heating process can be changed to a suitable wind direction and supplied.

(Embodiment 7)
Hereinafter, a heating cooker according to a seventh embodiment of the present invention will be described with reference to FIGS. 13 and 14 attached. In the heating cooker according to the seventh embodiment of the present invention, the difference from the heating cooker according to the first embodiment is the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker according to the seventh embodiment, the flow path forming unit will be described in particular, and the elements having the same functions and configurations as those of the heating cooker according to the first embodiment will be denoted by the same reference numerals, The description of the first embodiment is used.

FIG. 13 is a plan cross-sectional view showing a heat source chamber and a drive chamber behind the heating chamber in the cooking device of the seventh embodiment. As shown in FIG. 13, the difference between the heating cooker of the seventh embodiment and the heating cooker of the first embodiment is that the first flow path forming unit 61 and the second flow path provided in the partition wall 15. This is the configuration of the forming unit 62. FIG. 14 is a perspective view of the partition wall 15 serving as the back wall of the heating chamber 2 in the heating cooker according to the seventh embodiment when viewed from the rear.

In the partition wall 15 serving as the back wall of the heating chamber 2, a first flow path forming portion 61 is provided between the central suction port 16 and the left outlet 23A on the back surface on the heat source chamber 8 side. Further, on the back surface of the partition wall 15, a second flow path forming portion 62 is provided between the central suction port 16 and the right outlet 23B. The first flow path forming portion 61 and the second flow path forming portion 62 are formed such that one end is fixed to the back surface of the partition wall 15 and the other end protrudes into the internal space of the heat source chamber 8. The protruding end portions of the first flow path forming portion 61 and the second flow path forming portion 62 are arranged with a predetermined gap from the heat source chamber back wall 14. Further, each of the first flow path forming portion 61 and the second flow path forming portion 62 is disposed between the heater 11 provided so as to surround the blower fan 9 and the

respective outlets

23A and 23B. ing. The blower fan 9, the heater 11, the first flow path forming part 61, and the second flow path forming part 62 are inside the heat source chamber 8 constituted by the partition wall 15 and the inner case 22 having the heat source chamber back wall 14. It is provided in the space.

As shown in FIG. 13 and FIG. 14, the first flow path forming part 61 is configured by a vertical flow path forming part 61A and a horizontal flow path forming part 61B, and the second flow path forming part 62 is It is composed of a flow path forming part 62A and a horizontal flow path forming part 62B. Each of the longitudinal flow

path forming portions

61A and 62A in the first flow path forming portion 61 and the second flow path forming portion 62 has an angle of about 45 degrees with respect to the plane formed by the partition wall 15 and faces outward. Inclined portions 61Aa and 62Aa that open and incline, and fixing portions 61Ab and 62Ab that are fixed to the partition wall 15, respectively. Each fixing part 61Ab, 62Ab is arranged on the center side from each of the left and

right outlets

23A, 23B. Inclined portions 61Aa and 62Aa of the respective longitudinal flow

path forming portions

61A and 62A are extended so as to cover the center sides of the left and

right outlets

23A and 23B. The fixing portions 61Ab and 62Ab of the longitudinal flow

path forming portions

61A and 62A are attachment portions for fixing to the partition wall 15. The fixing portions 61Ab and 62Ab are securely fixed to the partition wall 15 by caulking or welding.

Further, each of the lateral flow

path forming portions

61B and 62B in the first flow path forming portion 61 and the second flow path forming portion 62 includes blocking portions 61Ba and 62Ba that are perpendicular to the plane formed by the partition wall 15, and the partition walls. 15 has fixing portions 61Bb and 62Bb fixed to the motor 15, respectively.

In Embodiment 7, each of the first flow path forming portion 61 and the second flow path forming portion 62 is integrally formed by bending a metal plate. The material of the first flow path forming portion 61 and the second flow path forming portion 62 is not limited to metal, and any material having heat resistance that can maintain the shape can be used.

In the first flow path forming part 61, the vertical flow path forming part 61A and the horizontal flow path forming part 61B are arranged in an L shape and are integrally formed. The first flow path forming part 61 formed in this way is arranged on the center side (suction port side) and part of the upper side around the left outlet 23A. The longitudinal flow path forming part 61A has a surface parallel to the vertical direction (vertical direction), and the lateral flow path forming part 61B has a surface parallel to the horizontal direction.

In addition, although the longitudinal flow path forming part 61A and the lateral flow path forming part 61B in Embodiment 7 are configured to have a surface parallel to the vertical direction or the horizontal direction, the present invention is not limited to such a configuration. Instead, the vertical flow path forming section and the horizontal flow path forming section may be arranged at positions having appropriate angles according to the specifications of the heating device.

The longitudinal flow path forming portion 61A is disposed between the blower fan 9 and the left outlet 23A, and is disposed at a position where the hot air heated by the heater 11 is sent leftward from the blower fan 9 and heated. Yes. On the other hand, the horizontal flow path forming part 61B is arranged downstream of the vertical flow path forming part 61A in the rotation direction of the blower fan 9 and close to the downstream side of the left outlet. A part of the hot air from the blower fan 9 is blocked by the lateral flow path forming portion 61B and is blown out from the left outlet 23A.

The second flow path forming part 62 is configured in the same manner as the first flow path forming part 61, and the vertical flow path forming part 62A and the horizontal flow path forming part 62B are arranged in an L shape so as to be integrated. Is formed. In the second flow path forming part 62, the right outlet 23B is arranged in an L shape in part on the center side and the lower side. The longitudinal flow path forming part 62A has a surface parallel to the vertical direction (vertical direction), and the lateral flow path forming part 62B has a surface parallel to the horizontal direction. The longitudinal flow path forming portion 62A is disposed between the blower fan 9 and the right blower outlet 23B, and is disposed at a position where hot air heated by the heater 11 is sent rightward from the blower fan 9 and heated. Yes. On the other hand, the transverse flow path forming part 62B is arranged downstream of the vertical flow path forming part 62A in the rotation direction of the blower fan 9, and blocks a part of the hot air from the blower fan 9 so as to prevent the right outlet 23B. It is provided to blow out from.

As shown in FIG. 14, the inclined portions 61 Aa and 62 Aa (guide surfaces) in the first flow path forming portion 61 and the second flow path forming portion 62 are shorter than the vertical length of the partition wall 15, The

outlets

23A and 23B are formed longer than the length in the vertical direction, and are provided so as to cover a part of the left and

right outlets

23A and 23B.

In the heating cooker according to the seventh embodiment, the main body 1 including the heat source chamber 8 having the blower fan 9 and the heater 11 and the drive chamber 12 having the motor 13 is secured while securing the internal volume of the heating chamber 2. In order to reduce the depth dimension, the depth dimension of the combined portion of the heat source chamber 8 and the drive chamber 12 is reduced.

In the cooking device of the seventh embodiment, the blower fan 9 which is a centrifugal fan that does not deteriorate the blowing performance even if the depth dimension is small is used, and the depth dimension of the central portion that is the suction portion can be reduced. A blower fan 9 is used. For this reason, the heat source chamber rear wall 14 through which the shaft of the motor 13 penetrates has a shape in which a portion close to the motor 13 is recessed on the heating chamber side (front surface side), and the motor 13 is disposed inside the recess. Has been. As a result, the size in the depth direction of the combined portion of the heat source chamber 8 and the drive chamber 12 is reduced.

As shown in FIG. 13, in the heating cooker according to the seventh embodiment, the heat source chamber back wall 14 is configured as described above, and the motor 13 is disposed in the recess. The depth dimension of the adjacent part (center part) is reduced. In the heat source chamber 8, the depth dimension other than the portion close to the motor 13 (outer peripheral portion) is larger than that of the central portion, and the heater 11, the first flow path forming portion 61, and the second flow path forming portion. An arrangement space is secured so that 62 is disposed at a predetermined position, and a passage for airflow in the heat source chamber 8 is secured. In particular, the air flow path formed by the first flow path forming part 61 and the second flow path forming part 62 is reliably ensured. In the heat source chamber 8, the heater 11 is disposed slightly behind the center position of the length of the blade of the blower fan 9 in the depth direction.

Hereinafter, the heating operation in the heating cooker according to the seventh embodiment of the present invention will be described.
In the heating cooker according to the seventh embodiment, for example, when performing oven cooking, the cooking dish 5 on which the object to be heated 10 such as a cookie is placed is related to the support 4 provided on the left and right wall surfaces of the heating chamber 2. Stop and insert into the heating chamber 2. The cooking pan 5 is pushed in until it comes into contact with the partition wall 15 which is the back wall of the heating chamber 2, the door 14 is closed, and the heating chamber 2 becomes a heatable space. Oven cooking in the cooking device is started by operating a predetermined button on an operation unit (not shown) provided on the front surface of the main body 1.

The blower fan 9 starts rotating as the motor 13 rotates. By the rotation operation of the blower fan 9, a spiral outward air flow is blown out from the outer peripheral portion of the blower fan 9, which is a centrifugal fan. The air flow blown out from the blower fan 9 is heated by the heater 11 disposed so as to surround the outer peripheral portion of the blower fan 9 to become a high-temperature air flow. Further, part of the air flow from the blower fan 9 contacts the inclined portions 61Aa and 62Aa of the first flow path forming portion 61 and the second flow path forming portion 62 provided at the left and right positions of the blower fan 9. Then, it is guided toward the heat source chamber rear wall 14 that is behind the heat source chamber 8. Thus, the air flow guided to the rear side of the heat source chamber 8 flows more toward the heater 11 disposed slightly rearward than the blower fan 9 and is heated to become a high-temperature air flow (hot air).

Further, in the heating cooker according to the seventh embodiment, the blocking portions 61Ba and 62Ba of the first flow path forming portion 61 and the second flow path forming portion 62 are spirally outward from the outer peripheral portion of the blower fan 9. A part of the air flow is blocked and collected and guided to flow to the left and

right outlets

23A and 23B. For this reason, in the heating cooker of Embodiment 7, it is comprised so that many airflows may be blown off from right and left

blower outlets

23A and 23B.

In the hot air sent to the outer peripheral side by the blower fan 9 and heated by the heater 11 as described above, the hot air sent to the upper side of the blower fan 9 is blown out from the upper outlet 17A in the partition wall 15 to the heating chamber 2, The hot air sent out below the blower fan 9 is blown out into the heating chamber 2 from the lower blowout port 17B. Since these hot airs are spiral in the rotational direction of the blower fan 9 and have an outward wind direction, the hot air from the upper outlet 17A flows in the direction of the ceiling surface 21 and the right side surface 19 of the heating chamber. The hot air from the lower outlet 17B flows in the direction of the bottom surface 20 and the left side surface 18 of the heating chamber 2.

Further, in the heat source chamber 8, in the hot air sent out to the outer peripheral side by the blower fan 9 and heated by the heater 11, the hot air sent out in the left-right direction of the blower fan 9 is the first flow path forming portion 61 and the second flow passage. In contact with the inclined portions 61Aa and 62Aa (guide surfaces) of the flow path forming portion 62, the heat source chamber back wall 14 is guided. The hot air guided to the heat source chamber back wall 14 flows along the heat source chamber back wall 14, changes the wind direction at the left and right ends of the heat source chamber 8, and again forms the first flow path forming portion 61 and the second flow path. It goes in the direction of the part 62. Next, the hot air is guided by the back surfaces (back surfaces of the guide surfaces) of the inclined portions 61Aa and 62Aa of the first flow path forming portion 61 and the second flow path forming portion 62 and heated from the

respective outlets

23A and 23B. Blow out into chamber 2.

At this time, hot air blown from the left and

right outlets

23A and 23B to the heating chamber 2 flows in the direction from the left and right end portions toward the center inside the heat source chamber 8. For this reason, it blows off toward the approximate center of the heating chamber 2. That is, the hot air blown out from the left and

right outlets

As mentioned above, according to the heating cooker of Embodiment 7, the to-be-heated material 10 concentrates the hot air blown in the heating chamber 2 from the heat source chamber 8 through the left and

right outlets

23A and 23B. It can flow to be heated. As a result, in the heating cooker according to the seventh embodiment, the heating loss due to the hot air heating only the wall surface of the heating chamber 2 can be significantly suppressed, the heating chamber 2 can be efficiently heated, Efficient cooking with respect to the heated object 10 becomes possible. Therefore, according to the heating cooker of Embodiment 7, the preheating time and cooking time of a heating chamber can be shortened, and the cooking speed can be improved.

(Embodiment 8)
Hereinafter, the heating cooker of Embodiment 8 which concerns on this invention is demonstrated with reference to attached FIG. In the heating cooker according to the eighth embodiment of the present invention, the difference from the heating cookers according to the first and seventh embodiments described above is the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker of the eighth embodiment, the flow path forming unit will be described in particular, and elements having the same functions and configurations as those of the heating cookers of the first and seventh embodiments are denoted by the same reference numerals. The description is based on the description of Embodiment 1 and Embodiment 7 described above.

FIG. 15 is a plan cross-sectional view showing a heat source chamber and a driving chamber behind the heating chamber in the heating cooker according to the eighth embodiment. As shown in FIG. 15, the difference between the heating cooker according to the eighth embodiment and the heating cooker according to the seventh embodiment is that the first flow path is provided in the partition wall 15 that is the back wall of the heating chamber 2. This is the shape of the part 63 and the second flow path forming part 64. In the heating cooker according to the eighth embodiment, each inclined portion (guide surface) in the first flow path forming portion 63 and the second flow path forming portion 64 is formed of a curved surface.

The first flow path forming portion 63 includes a vertical flow path forming portion 63A and a horizontal flow path forming portion 63B, similarly to the first flow path forming portion 61 of the seventh embodiment shown in FIG. It is constructed integrally. The longitudinal flow path forming portion 63A has an inclined portion having a concave surface facing the left outlet 23A and a fixing portion for fixing to the partition wall 15 which is the back wall of the heating chamber 2. Further, the transverse flow path forming portion 63B has a blocking portion having a horizontal surface and a fixing portion for fixing to the partition wall 15 which is the back wall of the heating chamber 2.

Also, the second flow path forming portion 64 is configured integrally with a vertical flow path forming portion 64A and a horizontal flow path forming portion 64B, as with the first flow path forming portion 63. The longitudinal flow path forming portion 64 A has an inclined portion having a concave surface facing the right outlet 23 B, and a fixing portion for fixing to the partition wall 15. Further, the transverse flow path forming portion 64B has a blocking portion having a horizontal surface and a fixing portion for fixing to the partition wall 15.

In the heating cooker according to the eighth embodiment, the first flow path forming portion 63 and the second flow path forming portion 64 are described as being fixed to the partition wall 15 (fixed by caulking or welding). 1st flow path formation part 63 and 2nd flow path formation part 64 are fixed to the other member which forms the heat source chamber 8, and it is arrange | positioned in the predetermined position with respect to the left-

right outlet

23A, 23B May be.

In the heat source chamber 8 in the cooking device of the eighth embodiment configured as described above, the hot air sent in the left-right direction of the blower fan 9 is a smooth curved surface (in the inclined portion of the first flow path forming portion 63 ( (Convex surface) and the guide surface which is a smooth curved surface (convex surface) in the inclined portion of the second flow path forming portion 64, and is guided toward the heat source chamber rear wall 14. The hot air guided to the heat source chamber back wall 14 flows along the heat source chamber back wall 14, greatly detours by changing the wind direction at the left and right ends of the heat source chamber 8, and again the first flow path forming unit 63 and the second flow channel. It flows in the direction of the flow path forming part 64. Therefore, the hot air is guided by the back surface of the guide surface which is the smooth curved surface (concave surface) of the inclined portion of the first flow path forming portion 63 and the smooth curved surface (concave surface) of the inclined portion of the second flow path forming portion 64. Then, it is blown out to the heating chamber 2 from the

respective outlets

23A, 23B.

At this time, hot air blown from the left and

right outlets

23A and 23B to the heating chamber 2 flows in the direction from the left and right end portions toward the center inside the heat source chamber 8. For this reason, the hot air is blown out from the left and right air outlets 23 A and 23 B so as to go to the approximate center of the heating chamber 2. That is, hot air blown out from the left and right outlets 23 A and 23 B to the heating chamber 2 flows toward the heated object 10 in the heating chamber 2 and flows so as to intensively heat the heated object 10.

Then, by adjusting the angle formed between the curved end and the partition wall 15 on the fixed portion side of each inclined portion (guide surface) curved surface in the first flow path forming portion 63 and the second flow path forming portion 64. The direction of the hot air blown out from the left and

right outlets

23A and 23B to the heating chamber 2 can be adjusted.

In the heating cooker according to the eighth embodiment, the inclined portions (guide surfaces) in the first flow path forming portion 63 and the second flow path forming portion 64 are formed with smooth curved surfaces. The direction of the hot air blown from the

air outlets

23A, 23B to the heating chamber 2 can be smoothly directed in the forward direction of the heating chamber 2 as compared with the heating cooker of the seventh embodiment.

As described above, according to the heating cooker of the eighth embodiment, the hot air blown from the heat source chamber 8 to the heating chamber 2 through the left and

right outlets

23A and 23B is applied to the object to be heated 10 from the front to the center. The direction can be smoothly changed to flow. As a result, the heating loss caused by the hot air heating only the wall surface of the heating chamber 2 can be greatly suppressed, the heating chamber 2 can be heated efficiently, and the cooking object 10 can be efficiently cooked. Is possible. Therefore, according to the cooking device of Embodiment 8, the preheating time and cooking time of the heating chamber 2 can be shortened, and the cooking speed can be improved.

(Embodiment 9)
Hereinafter, the heating cooker of Embodiment 9 which concerns on this invention is demonstrated with reference to attached FIG. 16 and FIG. In the heating cooker according to the ninth embodiment of the present invention, the difference from the heating cooker according to the first embodiment is the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker according to the ninth embodiment, the flow path forming unit will be particularly described, and the elements having the same functions and configurations as those of the heating cooker according to the first embodiment are denoted by the same reference numerals, The description of the first embodiment is used.

FIG. 16 is a plan cross-sectional view showing a heat source chamber and a driving chamber behind the heating chamber in the cooking device of the ninth embodiment. As shown in FIG. 16, the difference between the heating cooker according to the ninth embodiment and the heating cooker according to the first embodiment is that the first flow path is provided in the partition wall 15 that is the back wall of the heating chamber 2. This is the configuration of the part 65 and the second flow path forming part 66. FIG. 17: is the perspective view which looked at the partition 15 which is the back wall of the heating chamber 2 in the heating cooker of Embodiment 9 from back.

In the partition wall 15 which is the back wall of the heating chamber 2, a first flow path forming portion 65 is provided on the back surface on the heat source chamber 8 side between the central suction port 16 and the left outlet 23 A. Further, on the back surface of the partition wall 15, a second flow path forming portion 66 is provided between the central suction port 16 and the right outlet 23 B. The first flow path forming portion 65 and the second flow path forming portion 66 are formed such that one end is fixed to the back surface of the partition wall 15 and the other end protrudes into the internal space of the heat source chamber 8. The protruding end portions of the first flow path forming portion 65 and the second flow path forming portion 66 are arranged with a predetermined gap from the heat source chamber back wall 14. Moreover, the 1st flow path formation part 65 and the 2nd flow path formation part 66 are provided between the heater 11 arrange | positioned so that the ventilation fan 9 may be surrounded, and each

blower outlet

23A, 23B. . The blower fan 9, the heater 11, the first flow path forming portion 65, and the second flow path forming portion 66 are inside the heat source chamber 8 constituted by the partition wall 15 and the inner case 22 having the heat source chamber back wall 14. Is provided.

As shown in FIGS. 16 and 17, the first flow path forming part 65 is constituted by a vertical flow path forming part 65A, a horizontal flow path forming part 65B, and a ceiling flow path forming part 65C. Further, the second flow path forming part 66 is constituted by a vertical flow path forming part 66A, a horizontal flow path forming part 66B, and a ceiling flow path forming part 66C. Each of the longitudinal flow

path forming portions

65A and 66A in the first flow path forming portion 65 and the second flow path forming portion 66 has an angle of about 45 degrees with respect to the plane formed by the partition wall 15 and faces outward. Inclined portions 65Aa and 66Aa that are opened and inclined, and fixing portions 65Ab and 66Ab that are fixed to the partition wall 15, respectively.

The inclined portions 65Aa and 66Aa of the longitudinal flow

path forming portions

65A and 66A are extended so as to cover a part of the rear surfaces of the left and

right outlets

23A and 23B, and the protruding end portions of the inclined portions 65Aa and 66Aa and the heat source There is a predetermined gap between the rear wall 14 and the room. The fixing portions 65Ab and 66Ab of the vertical flow

path forming portions

65A and 66A are attachment portions for fixing to the partition wall 15, and the fixing portions 65Ab and 66Ab are securely fixed to the partition wall 15 by caulking or welding.

Further, each of the lateral flow

path forming portions

65B and 66B in the first flow path forming portion 65 and the second flow path forming portion 66 includes blocking portions 65Ba and 66Ba that are perpendicular to the plane formed by the partition wall 15, and the partition walls. 15 has fixing portions 65Bb and 66Bb fixed to the motor 15, respectively.

In Embodiment 9, each of the first flow path forming portion 65 and the second flow path forming portion 66 is integrally formed by bending a metal plate. The material of the first flow path forming portion 65 and the second flow path forming portion 66 is not limited to metal, and any material having heat resistance that can maintain the shape can be used.

In the first flow path forming section 65, the vertical flow path forming section 65A and the horizontal flow path forming section 65B are arranged in an L shape, and are located on the center side (suction port side) and the upper side around the left outlet 23A. It is arranged in the part. Moreover, the end part which protrudes in the heat source room back wall 14 in 65 A of vertical flow path formation parts and the horizontal flow path formation part 65B is covered with the ceiling flow path formation part 65C used as a ceiling surface, and is formed integrally. The first flow path forming portion 61 configured in this way surrounds the left outlet 23A in an L shape. The vertical flow path forming part 65A has a surface parallel to the vertical direction (vertical direction), and the horizontal flow path forming part 65B has a surface parallel to the horizontal direction. The ceiling flow path forming portion 65 C is configured by a surface substantially parallel to the partition wall 15.

The vertical flow path forming portion 65A and the horizontal flow path forming portion 65B in the ninth embodiment are configured to have surfaces that are parallel to the vertical direction or the horizontal direction, but the present invention is not limited to such a configuration. Instead, the vertical flow path forming section and the horizontal flow path forming section may be arranged at positions having appropriate angles according to the specifications of the heating device.

The longitudinal flow path forming portion 65A is disposed between the blower fan 9 and the left outlet 23A, and is disposed at a position where the hot air heated by the heater 11 is sent out from the blower fan 9 in the left direction. Yes. On the other hand, the horizontal flow path forming portion 65B is arranged close to the downstream side of the vertical flow path forming portion 65A in the rotation direction of the blower fan 9, and dams and collects part of the hot air from the blower fan 9, It is provided to blow out from the left outlet 23A.

The second flow path forming section 66 is configured in the same manner as the first flow path forming section 65, and the vertical flow path forming section 66A and the horizontal flow path forming section 66B are arranged in an L shape. Moreover, the end part which protrudes in the heat-source-chamber back wall 14 in 66 A of vertical flow path formation parts and the horizontal flow path formation part 66B is covered with the ceiling flow path formation part 66C used as a ceiling surface, and is formed integrally. The second flow path forming portion 66 configured in this way is arranged outside the right outlet 23 B in an L shape in a part on the center side and the lower side. The vertical flow path forming part 66A has a surface parallel to the vertical direction (vertical direction), and the horizontal flow path forming part 66B has a surface parallel to the horizontal direction. The ceiling flow path forming portion 66 C is configured by a surface substantially parallel to the partition wall 15.

The longitudinal flow path forming portion 66A is disposed between the blower fan 9 and the right outlet 23B, and is disposed at a position where the hot air heated by the heater 11 is sent out from the blower fan 9 in the right direction. Yes. On the other hand, the transverse flow path forming part 66B is arranged close to the downstream side of the vertical flow path forming part 66A in the rotation direction of the blower fan 9, and dams and collects part of the hot air from the blower fan 9, It is provided to blow out from the right outlet 23B.

As shown in FIG. 17, the inclined portions 65Aa and 66Aa (guide surfaces) in the first flow path forming portion 65 and the second flow path forming portion 66 are shorter than the vertical length of the partition wall 15, and The

outlets

right outlets

23A and 23B.

In the heating cooker according to the ninth embodiment, the main body 1 including the heat source chamber 8 having the blower fan 9 and the heater 11 and the drive chamber 12 having the motor 13 is secured while securing the internal volume of the heating chamber 2. In order to reduce the depth dimension, the depth dimension of the combined portion of the heat source chamber 8 and the drive chamber 12 is reduced.

In the cooking device of the ninth embodiment, the blower fan 9 which is a centrifugal fan that does not deteriorate the blowing performance even if the depth dimension is small is used, and the depth dimension of the central portion that is the suction portion can be reduced. A blower fan 9 is used. For this reason, the heat source chamber rear wall 14 through which the shaft of the motor 13 penetrates has a shape in which a portion close to the motor 13 is recessed on the heating chamber side (front surface side), and the motor 13 is disposed inside the recess. Has been. As a result, the dimension in the depth direction of the heat source chamber 8 and the drive chamber 12 is reduced.

As shown in FIG. 16, in the heating cooker according to the ninth embodiment, the heat source chamber back wall 14 is configured as described above, and the motor 13 is disposed in the recess. The depth dimension of the adjacent part (center part) is reduced. In the heat source chamber 8, the depth dimension of the portion (outer peripheral portion) other than the portion close to the motor 13 is larger than that of the central portion, and the heater 11, the first flow path forming portion 65, and the second flow path. An arrangement space is secured so that the formation portion 66 is disposed at a predetermined position, and a passage for airflow in the heat source chamber 8 is secured. In particular, the air flow path formed by the first flow path forming part 65 and the second flow path forming part 66 is ensured. In the heat source chamber 8, the heater 11 is disposed slightly behind the center position of the length of the blade of the blower fan 9 in the depth direction.

Hereinafter, the heating operation in the heating cooker according to the ninth embodiment of the present invention will be described.
In the heating cooker according to the ninth embodiment, for example, when performing oven cooking, the cooking pan 5 on which the article to be heated 10 such as a cookie is placed is related to the support portion 4 provided on the left and right wall surfaces of the heating chamber 2. Stop and insert into the heating chamber 2. The cooking pan 5 is pushed in until it comes into contact with the partition wall 15, the door 14 is closed, and the heating chamber 2 becomes a heatable space. Oven cooking in the cooking device is started by operating a predetermined button on an operation unit (not shown) provided on the front surface of the main body 1.

The blower fan 9 starts rotating as the motor 13 rotates. By the rotation operation of the blower fan 9, a spiral outward air flow is blown out from the outer peripheral portion of the blower fan 9 which is a centrifugal fan. The air flow blown out from the blower fan 9 is heated by the heater 11 disposed so as to surround the outer peripheral portion of the blower fan 9 to become a high-temperature air flow. Further, a part of the air flow from the blower fan 9 contacts the inclined portions 65Aa and 66Aa of the first flow path forming portion 65 and the second flow path forming portion 66 provided at the left and right positions of the blower fan 9. Then, it is guided toward the heat source chamber rear wall 14 that is behind the heat source chamber 8. Thus, the air flow guided to the rear of the heat source chamber 8 flows more toward the heater 11 disposed slightly rearward than the blower fan 9 and is heated to become a high-temperature air flow.

In the heating cooker of the ninth embodiment, the blocking portions 65Ba and 66Ba of the first flow path forming portion 65 and the second flow path forming portion 66 are spirally outward from the outer peripheral portion of the blower fan 9. A part of the air flow is collected by damming and guided to flow to the left and

right outlets

23A and 23B. For this reason, the cooking device of the ninth embodiment is configured such that a large airflow is blown out from the left and

right outlets

23A and 23B. Furthermore, in the heating cooker of the ninth embodiment, since the first flow path forming portion 65 and the second flow path forming portion 66 are formed with ceiling flow

path forming portions

65C and 66C, the blower fan 9 A part of the airflow that is spiral and outward is guided from the outer peripheral portion of the left and

right outlets

23A and 23B without fail.

In the hot air sent to the outer peripheral side by the blower fan 9 and heated by the heater 11 as described above, the hot air sent to the upper side of the blower fan 9 is blown out from the upper outlet 17A in the partition wall 15 to the heating chamber 2. . Moreover, the hot air sent out below the blower fan 9 is blown out into the heating chamber 2 from the lower blowout port 17B. Since these hot airs are spiral in the rotational direction of the blower fan 9 and have an outward wind direction, the hot air from the upper outlet 17A flows in the direction of the ceiling surface 21 and the right side surface 19 of the heating chamber. The hot air from the lower outlet 17B flows in the direction of the bottom surface 20 and the left side surface 18 of the heating chamber 2.

Further, in the heat source chamber 8, in the hot air sent out to the outer peripheral side by the blower fan 9 and heated by the heater 11, the hot air sent out in the left-right direction of the blower fan 9 is the first flow path forming unit 65 and the second flow passage. In contact with the inclined portions 65Aa and 66Aa (guide surfaces) of the flow path forming portion 66, the heat source chamber back wall 14 is guided. The hot air guided to the heat source chamber rear wall 14 flows along the heat source chamber rear wall 14, changes the air direction at the left and right ends of the heat source chamber 8, greatly detours, and again the first flow path forming unit 65 and the first flow channel. Flows in the direction of the second flow path forming portion 66. Next, the hot air is guided to the back surfaces (back surfaces of the guide surfaces) of the inclined portions 65Aa and 66Aa of the first flow path forming portion 65 and the second flow path forming portion 66 and heated from the

respective outlets

23A and 23B. Blow out into chamber 2.

At this time, hot air blown from the left and

right outlets

23A and 23B to the heating chamber 2 flows in the direction from the left and right end portions toward the center inside the heat source chamber 8. For this reason, it blows off toward the approximate center of the heating chamber 2. That is, hot air blown out from the left and right outlets 23 A and 23 B to the heating chamber 2 flows toward the heated object 10 in the heating chamber 2 and flows so as to intensively heat the heated object 10.

As described above, according to the heating cooker of the ninth embodiment, the heated object 10 concentrates hot air blown from the heat source chamber 8 through the left and

right outlets

23A and 23B into the heating chamber 2. It can flow to be heated. As a result, in the heating cooker according to the ninth embodiment, the heating loss due to the hot air heating only the wall surface of the heating chamber 2 can be greatly suppressed, the heating chamber 2 is heated efficiently, Efficient cooking with respect to the heated object 10 becomes possible. Therefore, according to the heating cooker of Embodiment 9, the preheating time and cooking time of a heating chamber can be shortened, and the cooking speed can be improved.

(Embodiment 10)
Hereinafter, the cooking device according to the tenth embodiment of the present invention will be described with reference to FIG. The heating cooker according to the tenth embodiment of the present invention is different from the above-described cooking cookers according to the first and ninth embodiments in the configuration of the flow path forming unit provided in the heat source chamber. Therefore, in the heating cooker of the tenth embodiment, the flow path forming unit will be particularly described, and elements having the same functions and configurations as the heating cookers of the first and ninth embodiments are denoted by the same reference numerals. The description is based on the description of Embodiment 1 and Embodiment 9 described above.

FIG. 18 is a plan cross-sectional view showing a heat source chamber and a driving chamber behind the heating chamber in the heating cooker according to the tenth embodiment. As shown in FIG. 18, the difference between the heating cooker according to the tenth embodiment and the heating cooker according to the ninth embodiment is that the first flow path is provided in the partition wall 15 that is the back wall of the heating chamber 2. This is the shape of the portion 67 and the second flow path forming portion 68. In the heating cooker according to the tenth embodiment, each inclined portion (guide surface) in the first flow path forming portion 67 and the second flow path forming portion 68 is formed of a curved surface.

The first flow path forming portion 67 is similar to the first flow path forming portion 65 of the ninth embodiment shown in FIG. 16 described above, and the vertical flow path forming portion 67A, the horizontal flow path forming portion 67B, and the ceiling flow It is comprised by the path | route formation part 67C. The longitudinal flow path forming portion 67A has an inclined portion having a concave surface facing the left outlet 23A, and a fixing portion for fixing to the partition wall 15 which is the back wall of the heating chamber 2. The transverse flow path forming portion 67B has a blocking portion having a horizontal surface and a fixing portion for fixing to the partition wall 15.

Further, the second flow path forming portion 68 is configured by a vertical flow path forming portion 68A, a horizontal flow path forming portion 68B, and a ceiling flow path forming portion 68C, similarly to the first flow path forming portion 67. The vertical flow path forming portion 68 A includes an inclined portion having a concave surface facing the right outlet 23 B and a fixing portion for fixing to the partition wall 15. Further, the transverse flow path forming portion 68B has a blocking portion having a horizontal surface and a fixing portion for fixing to the partition wall 15.

In the heating cooker according to the tenth embodiment, the first flow path forming portion 67 and the second flow path forming portion 68 are described as being fixed to the partition wall 15 (fixed by caulking or welding). The first flow path forming portion 67 and the second flow path forming portion 68 may be fixed to other members forming the heat source chamber 8 and provided at predetermined positions with respect to the left and

right outlets

23A and 23B.

In the heat source chamber 8 in the heating cooker of the tenth embodiment configured as described above, the hot air sent in the left-right direction of the blower fan 9 is a smooth curved surface (in the inclined portion of the first flow path forming portion 67 ( (Convex surface) and a guide surface which is a smooth curved surface (convex surface) in the inclined portion of the second flow path forming portion 68, and is guided toward the heat source chamber rear wall 14. The hot air guided to the heat source chamber rear wall 14 flows along the heat source chamber rear wall 14, and greatly detours by changing the wind direction at the left and right ends of the heat source chamber 8. It flows in the direction of the flow path forming part 68. Therefore, the hot air is guided by the back surface of the guide surface which is the smooth curved surface (concave surface) of the inclined portion of the first flow path forming portion 67 and the smooth curved surface (concave surface) of the inclined portion of the second flow path forming portion 68. Then, it is blown out to the heating chamber 2 from the

respective outlets

23A, 23B.

At this time, hot air blown from the left and

right outlets

Then, by adjusting the angle formed between the curved end portion and the partition wall 15 on the fixed portion side of each inclined portion (guide surface) curved surface in the first flow path forming portion 67 and the second flow path forming portion 68. The direction of the hot air blown out from the left and

right outlets

23A and 23B to the heating chamber 2 can be adjusted.

In the heating cooker according to the tenth embodiment, the inclined portions (guide surfaces) in the first flow path forming portion 67 and the second flow path forming portion 68 are formed with smooth curved surfaces. The direction of hot air blown out from the

air outlets

23A and 23B to the heating chamber 2 can be smoothly directed in the forward direction of the heating chamber 2 as compared with the heating cooker of the ninth embodiment.

As described above, according to the heating cooker of the tenth embodiment, the hot air blown from the heat source chamber 8 to the heating chamber 2 through the left and

right outlets

23A and 23B is smoothly redirected and applied from the front to the center. Can flow in the direction. As a result, the heating loss due to the hot air heating only the wall surface of the heating chamber 2 can be significantly suppressed, the inside of the heating chamber 2 is heated efficiently, and the object to be heated 10 is efficiently heated. Cooking is possible. Therefore, according to the cooking device of Embodiment 10, the preheating time and cooking time of the heating chamber 2 can be shortened, and the cooking speed can be improved.

In addition, in the heating cooker of each above-mentioned embodiment, the heat source arrange | positioned in the back of the heating chamber 2 by forming a dent in the heat source room back wall, and arrange | positioning the motor 13 in the dent. It is possible to reduce the thickness of the chamber 8 and the drive chamber 12, and to reduce the overall depth of the apparatus while ensuring the capacity of the heating chamber, and to provide a cooking device having high energy saving performance. be able to.

Moreover, in the heating cooker of each above-mentioned embodiment, although demonstrated in the example which used the annular sheathed heater as the heater 11, by using the heater which provided the several radiation fin on the surface of the sheathed heater, Heating of the air from the blower fan 9 can be performed with high efficiency.

In addition, in the heating apparatus of the present invention described as an example of the heating cooker in each of the above-described embodiments, since it is configured to blow out a large amount of hot air from the air outlet toward the center of the heating chamber, The object to be heated can be efficiently heated, and the time for the preheating operation or the heating operation of the heating chamber can be shortened.

In the heating device of the present invention, since the direction of hot air from the outlet can be changed, for example, in the case of an object to be heated that tends to be uneven in a heating cooker, the object is directly applied to the object to be heated. It is possible to heat the object to be heated without applying the hot air, and it is possible to change the direction of the hot air during the heating operation.

The present invention relates to a heating device in industrial fields such as a microwave oven or an electric oven having an oven function by convection heating for home use, various commercial oven heating devices, a drying device, a ceramic heating device, a sintering device, or a living body. The present invention can be applied to various heating devices such as a heating device used for chemical reactions.

DESCRIPTION OF SYMBOLS 1 Main body 2 Heating chamber 3 Door 4 Support part 5 Cooking dish 8 Heat source chamber 9 Blower fan 10 Heated object 11 Heater 12 Drive chamber 13 Motor 14 Heat source chamber back wall 15 Bulkhead 16 Suction port

17A Upper outlet

17B Lower outlet 23A Left Air outlet 23B Right air outlet 30A 1st flow path formation part 30B 2nd flow path formation part

Claims

A heating chamber that accommodates an object to be heated, and a heat source chamber that communicates with the heating chamber by a suction port and a plurality of outlets formed in a partition wall between the heating chamber,
In the inside of the heat source chamber, an air flow that forms an air flow, a heating unit that heats the air flow, and an air flow heated by the heating unit are moved in a direction of a surface facing the partition, A flow path forming unit that forms a flow path that blows out from at least one of the plurality of air outlets toward the center of the heating chamber after circulating around at least a part of the space in the heat source chamber; Heating device.
The heating apparatus according to claim 1, wherein the flow path forming unit is disposed between air flow paths from the heating unit to the blower outlet.
The flow path forming unit has a guide surface that moves the air flow heated by the heating unit in the direction of the surface facing the partition wall, and the air moved in the direction of the surface facing the partition wall by the guide surface The heating apparatus according to claim 1, wherein the flow is configured so as to flow through at least a partial space in the heat source chamber and then blow out from the air outlet in contact with the back surface of the guide surface.
The blower unit is a centrifugal fan that sucks air inside the heating chamber from a suction port of the partition wall and discharges air in a centrifugal direction, and the heating unit is provided so as to surround an outer periphery of the blower unit. Item 4. The heating device according to Item 3.
The heating apparatus according to claim 3, wherein at least a part of the guide surface has an inclined surface inclined at a predetermined angle with respect to an axial direction of a rotation shaft of the blower unit.
The heating device according to claim 3, wherein at least a part of the guide surface is a curved surface.
The heating apparatus according to claim 3, wherein the guide surface has a predetermined distance from the air outlet and is configured to cover at least the entire air outlet.
At least a part of the guide surface has an inclined surface that is inclined at a predetermined angle with respect to the axial direction of the rotation axis of the blower section, and by changing an angle of the inclined surface, The heating device according to claim 3, wherein the heating device is configured to change a direction.
The heating device according to claim 3, configured to change a direction of an air flow blown from the air outlet by changing a rotation speed of the air blowing unit.
The flow path forming unit has a guide surface that moves the air flow heated by the heating unit in the direction of the surface facing the partition wall, and the air moved in the direction of the surface facing the partition wall by the guide surface A longitudinal flow path forming section configured to flow out of the air outlet after coming into contact with the back surface of the guide surface after flowing through at least a part of the space in the heat source chamber;
In the flow direction of the air flow formed by the blower, a blocking surface is provided on the downstream side of the blower outlet, and is arranged to block a part of the airflow from the blower and blow out from the blower outlet. The heating apparatus according to claim 1, further comprising:
The flow path forming unit has a guide surface that moves the air flow heated by the heating unit in the direction of the surface facing the partition wall, and the air moved in the direction of the surface facing the partition wall by the guide surface A longitudinal flow path forming section configured to flow out of the air outlet after coming into contact with the back surface of the guide surface after flowing through at least a part of the space in the heat source chamber;
A dam provided at the downstream side of the air outlet in the flow direction of the air flow formed by the air blower, and arranged to dam a part of the air flow from the air blower and blow out from the air outlet. A transverse flow path forming portion having a surface;
The ceiling flow path forming part which has a ceiling surface which covers the said blower outlet from the said blower outlet at predetermined intervals, and makes the said vertical flow path formation part and the said horizontal flow path formation part continuous. The heating device according to 1.
The guide surface of the vertical flow path forming portion and the damming surface of the horizontal flow path forming portion are arranged around the outlet, and the guide surface and the damming surface are configured to be orthogonal to each other. The heating device described.
The blower unit is a centrifugal fan that sucks air inside the heating chamber from a suction port of the partition wall and discharges air in a centrifugal direction, and the heating unit is provided so as to surround an outer periphery of the blower unit. Item 12. The heating device according to Item 10 or 11.
The heating device according to claim 10 or 11, wherein at least a part of the guide surface has an inclined surface inclined at a predetermined angle with respect to an axial direction of a rotation shaft of the blower section.
The heating device according to claim 10 or 11, wherein at least a part of the guide surface is a curved surface.