JP5629838B1 - Cooker - Google Patents

Abstract

A cooking device capable of suppressing dirt from adhering to the inner surface of a door is provided. A door provided on one surface of a housing and having a window for viewing the inside, a heating chamber for storing a material to be cooked in the housing, and a motor disposed above the heating chamber in the housing. A chamber, a motor attached to the motor chamber, a fan attached to the rotating shaft of the motor in the heating chamber and sucking air from below in the heating chamber, an air passage extending in a centrifugal direction from the rotating shaft of the motor, A heating cooker comprising: a blowout port that discharges the air that has passed through the path downward with respect to the heating chamber; and a heater that is disposed below the fan and has a ventilation gap that allows air in the heating chamber to be sucked from below. It is. [Selection] Figure 3

Description

  The present invention relates to a cooking device.

  2. Description of the Related Art Conventionally, in a heating cooker, a microwave oven using microwaves (high frequency), an oven cooker using hot air circulation, and a grill by radiant heat using an electric heater as a heating source as a heating means of the cooking material housed in the heating chamber Cookers, oven toasters that can bake both sides are known. As one of the oven cookers, a non-oil fryer that does not use oil is known. Due to recent health consciousness, there is a growing interest in non-frier cooking by hot air circulation, which can be used for fried food such as fries, croquettes and fried shrimp without using oil. In this specification, a non-oil fryer is called a hot air circulation cooker.

  The above-described cooking device is provided with a door (also called a door) for taking in and out the material to be cooked. As a result of cooking in the heating chamber, dirt adheres to the inner surface of the door due to oil from the food. Regular cleaning was required to remove dirt. As one method for solving this problem, as described in Patent Document 1, a catalyst coating layer is formed on the glass on the inner surface of the door, a lamp for ultraviolet irradiation is provided in the heating chamber, and dirt stuck to the catalyst coating layer. It has been proposed to decompose and remove.

Japanese Patent Application Laid-Open No. 11-294776

  The heating cooker described in Patent Document 1 has a problem of increasing costs because a catalyst coating layer is formed and a lamp is provided. Furthermore, it is difficult to irradiate the entire door of a relatively large heating cooker with ultraviolet rays, and there is a problem that a sufficient cleaning effect cannot be obtained.

  Accordingly, an object of the present invention is to provide a heating cooker that can prevent dirt from adhering to the door.

The present invention is provided on one surface of a housing, and has a door having a window for viewing the inside,
A heating chamber for storing the material to be cooked in the housing;
A motor chamber disposed above the heating chamber;
A motor installed in the motor chamber;
An upper hood having a substantially circular dish shape, which is arranged between the heating chamber and the motor chamber, expands so as to bend toward the heating chamber, and is opened downward;
A fan that is attached to the rotating shaft of the motor below the upper hood in the heating chamber , operates in a hot air circulation cooking mode that sucks up air in the heating chamber from below and sends it in the centrifugal direction ,
A lower hood having a substantially circular dish shape that is disposed on the lower side of the fan, has a suction hole in the center, expands so as to bend toward the heating chamber, and is opened downward;
An annular hot air outlet that is formed annularly between the periphery of the upper hood and the periphery of the lower hood, and blows hot air sent from the fan downward in the hot air circulation cooking mode toward the heating chamber ;
Is arranged below the fan, a first heater have a ventilation gap for passing the hot air from the bottom upwards, is operated in a hot-air circulating cooking mode,
It consists of an upper heater and a lower heater that are arranged separately in the upper and lower sides, the upper heater is arranged below the first heater, the lower heater is arranged below the placement net below the heating chamber, and the oven cooking mode and a second heater that is operated in,
The cooking device has an air curtain function on the inner surface of the door where the opening size of the upper hood is smaller than the distance between the door and the back wall facing the door, and the hot air blown downward from the hot air blowing port is there.

Preferably, in the present invention, a hood cover that overlaps the upper hood with a space for heat insulation therebetween is provided.
Preferably, the present invention is a heater in which a heating element that generates heat when energized by a first heater is provided in a metal cylinder, and a heater in which a heating element that generates heat when energized by a second heater is provided in a quartz glass cylinder. is there.

  According to at least one embodiment, in the present invention, hot air flowing downward is formed in the heating chamber, and the material to be cooked is cooked by the hot air. Hot air after cooking is sucked up from below and passes through the heater. When passing through the heater, oil components and the like generated during cooking are incinerated, and the hot air flowing downward has relatively little dirt. Since this downward hot air functions as an air curtain between the heating chamber and the inner surface of the door, it is possible to prevent dirt from adhering to the inner surface of the door. In addition, the effect described here is not necessarily limited, and may be any effect described in the specification.

FIG. 1 is a front side perspective view showing an appearance of a heating cooker according to an embodiment of the present invention. FIG. 2 is a rear perspective view showing the appearance of the heating cooker. FIG. 3 is a side sectional view of the cooking device. FIG. 4 is a side perspective sectional lower perspective view of the cooking device. FIG. 5 is a cross-sectional top perspective view of the cooking device in side view. FIG. 6 is a top perspective view showing a state where the motor is removed from the motor chamber of the heating cooker. FIG. 7 is a perspective view showing components of a heating cooker provided in the heating chamber. FIG. 8 is a front view of another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited only to the following examples. The description will be given in the following order.
<1. Embodiment>
<2. Other embodiments>
<3. Modification>

<1. Embodiment>
Hereinafter, the cooking device 10 according to the present invention will be described with reference to the drawings. The cooking device 10 according to the present invention has a function of performing deep-fried food cooking (hereinafter referred to as hot air circulation cooking) without using oil by circulating hot air at a high speed and continuously applying the hot air to the material to be cooked for a predetermined time. Furthermore, the heating cooker 10 also has a function of performing cooking (hereinafter referred to as “oven cooking”) for heating the material to be cooked by raising the temperature in the heating chamber by the heat of the heater. Furthermore, the cooking device 10 can be used as an oven toaster that directly heats the material to be cooked by the heat of the heater.

  The heating cooker 10 includes a rectangular box-shaped casing 100. An operation unit 110 is provided on the front upper portion of the housing 100. The operation unit 110 includes a cooking mode switch 111, a temperature setting dial 112, and a heating time setting dial 113. However, the configuration of the operation unit 110 is not limited to this. More parameters may be set. In addition to knobs and dials, buttons may be used.

  In use of the heating cooker 10, the user can select a hot-air circulating cooking mode that is the first cooking mode or an oven cooking mode that is the second cooking mode. The heating cooker 10 includes a control circuit that switches a heater to be operated by selecting a cooking mode. This control circuit is configured as an electric circuit on the circuit board 120, and is a hot air circulating cooking heater in response to a user input to the cooking mode switch 111, the temperature setting dial 112, and the heating time setting dial 113. Control of heater on / off, heater temperature, and heating time for oven cooking. The heating cooker 10 is provided with a power supply circuit (not shown) for supplying electric power supplied via an outlet or the like to each part of the heating cooker 10. The oven cooking mode includes an oven toaster mode suitable for use as an oven toaster.

  In addition, a door 130 for opening and closing the heating chamber 300 provided in the housing 100 is provided in front of the housing 100 and below the operation unit 110. The door 130 is configured to be rotatable about the lower end side, and a handle portion 131 is provided at the upper end of the door 130 so that the user can easily open and close the door 130. The door 130 has a window made of heat-resistant glass, and the inside of the heating chamber 300 can be seen through the window.

  An air supply port 140 is provided on the back side of the housing 100. The air supply port 140 is for supplying outside air into the housing 100. An exhaust port 150 is provided on the back side of the housing 100. The exhaust port 150 is for exhausting the air in the housing 100 to the outside. Details of the air supply port 140 and the exhaust port 150 will be described later.

  As shown in FIGS. 3 to 5, a motor chamber 200 configured in a box shape is provided in the upper portion of the housing 100. A duct 210 is provided in the motor chamber 200. The duct 210 is made of, for example, a resin material having high heat resistance. A motor 220 for rotating the cooling fan 230 and the circulation fan 660 is provided on the duct 210. As the motor 220, a scraping motor is used. However, the motor 220 is not limited to a scraping motor, and a motor other than the scraping motor, for example, a DC (Direct Current) fan motor may be used.

  As shown in FIG. 6, a first opening 211 for connecting the inside and the outside of the duct 210 is provided at the approximate center of the duct 210. For convenience of explanation, the upper surface of the housing 100 is omitted in FIG.

  An air supply port 140 is provided above the back surface of the housing 100 so as to communicate with the motor chamber 200. The air supply port 140 is made up of a large number of small-diameter holes and supplies the outside air into the motor chamber 200.

  An exhaust port 150 is provided below the air supply port 140 on the back surface of the housing 100 so as to communicate with the motor chamber 200. The exhaust port 150 is composed of a large number of small-diameter holes, and is used to exhaust the air in the motor chamber 200 to the outside.

  The motor 220 is provided so that the motor coil 221 is positioned on the air inlet 140 side. As a result, the air supplied from the air supply port 140 into the motor chamber 200 is surely in contact with the motor coil 221, so that the cooling efficiency of the motor coil 221 can be increased.

  Below the duct 210, a cooling fan 230 that is rotated by the power of the motor 220 is provided. The cooling fan 230 is attached to the rotating shaft of the motor 220. The cooling fan 230 takes in the outside air from the air supply port 140 into the motor chamber 200 and causes the air in the motor chamber 200 to flow so that the air in the motor chamber 200 is discharged from the exhaust port 150. The motor 220 is cooled by the flow of air by the cooling fan 230, and overheating of the motor 220 can be prevented. The overheating of the motor 220 may be due to the heat generated in the motor 220 itself, or the heat in the heating chamber 300 may be transmitted to the motor 220 through the shaft of the motor 220.

  The duct 210 is connected to the exhaust port 150. Air that flows into the motor chamber 200 from the air supply port 140 is sucked by the cooling fan 230 and flows into the duct 210 through the first opening 211. The air is then discharged from the exhaust port 150 through the duct 210.

  A substantially rectangular second opening 213 is formed on the exhaust port 150 side of the duct 210. The second opening 213 communicates with the exhaust port 150, and the air in the motor chamber 200 is exhausted from the exhaust port 150 through the second opening 213 of the duct 210. The diameter of the cooling fan 230 and the width of the second opening 213 may be substantially equal, or the width of the second opening 213 may be greater than the diameter of the cooling fan 230. Thereby, the air blown out toward the exhaust port 150 by the cooling fan 230 can be smoothly discharged from the exhaust port 150 through the second opening 213.

  The cooling fan 230 is provided at a position substantially the same height as the exhaust port 150. Thereby, since the air discharged by the rotation of the cooling fan 230 is discharged from the exhaust port 150 at the shortest distance without being obstructed by anything, the flow efficiency of air in the motor chamber 200 can be improved.

  As shown in FIG. 6, a notch 212 is provided at a position of the duct 210 substantially immediately below the motor coil 221 included in the motor 220. By providing the notch 212, air can easily flow from the outside to the inside of the duct 210 around the motor 220, particularly the motor coil 221. As a result, the flow rate of air around the motor coil 221 increases and the air flow becomes smooth, so that the cooling efficiency of the motor coil 221 can be increased.

  A circuit board 120 corresponding to the operation unit 110 including the cooking mode switch 111, the temperature setting dial 112, and the heating time setting dial 113 is provided in the motor chamber 200. Thereby, the circuit board 120 can also be cooled by causing air to flow in the motor chamber 200 by the cooling fan.

  Furthermore, the housing 100 is also cooled by causing the air in the motor chamber 200 to flow. Thereby, it can prevent that a user touches the housing | casing 100 and is burned during cooking. In addition, it is possible to prevent a situation in which an article cannot be placed on the housing 100.

  Inside the rectangular box-shaped casing 100 of the heating cooker 10, a heating chamber 300 configured in a hollow box shape with the front surface being an opening 310 is provided. The opening 310 is opened and closed by the door 130. The heating chamber 300 is a space defined by a ceiling wall 301, a bottom wall 302, a left side wall 303, a right side wall 304 and a back wall 305. The bottom wall 302 is made of a metal having excellent light reflectivity, such as an aluminum-plated steel plate or stainless steel, and functions as a reflector that reflects the heat of the oven heater. However, the metal which comprises the bottom wall 302 is not restricted to them, What kind of thing may be used if it is a metal material with good light reflectivity.

  As shown in FIGS. 3, 4, 5, and 7, a placement net 320 is provided below the heating chamber 300. In FIG. 7, for convenience of explanation, the ceiling wall 301, the left side wall 303, the right side wall 304, the back wall 305, the upper hood 610, and the lower hood 620 of the heating chamber 300 are omitted. The placement net 320 is a net made of a metal wire. A square dish 400 can be placed on the placing net 320.

  In addition, it is not restricted to the mounting net | network 320, By providing the left-right paired rail extended from the front of the heating chamber 300 to the back, and supporting the both ends of the square plate 400 with a rail, the square plate 400 floated from the bottom wall 302. You may make it hold | maintain in a state. The placement net 320 may be configured to move back and forth in conjunction with opening and closing of the door 130.

  As shown in FIGS. 3 and 7, the square plate 400 is formed into a bottomed rectangular box shape having an open top from a flat bottom surface portion 401 and a side surface portion 402 that rises in a curved shape from the outer periphery of the bottom surface portion 401. It is configured. Although described in detail later, the shape of the side surface portion 402 is to make it easier for hot air descending in the heating chamber 300 to be directed toward the center of the square dish 400. In addition, a flange 403 extending in the horizontal direction is formed on the entire peripheral edge of the square plate 400, and has a size for blocking the flow path of hot air below the flange 403 in the heating chamber 300. Yes. A breathable top plate member 410 is detachably provided on the opening side of the square plate 400.

  The top plate member 410 is configured as a net-like member having a size that fits the inner peripheral edge of the flange 403. The material to be cooked may be placed directly on the top surface of the top plate member 410. Since the top plate member 410 is configured in a net shape having a ventilation gap, the hot air blown down can pass through the top plate member 410 and enter the square plate 400. Thereby, it becomes possible to heat the to-be-cooked material mounted on the top plate member 410 from below with hot air. It is also possible to place the material to be cooked directly on the square plate 400.

  The square plate 400 may be integrally formed of a high heat-resistant resin such as glass reinforced PPS resin, glass reinforced PBT resin, polyimide resin, or the like, or may be formed of sheet metal to have a fluorine coat finish or enamel finish. Furthermore, you may manufacture with heat-resistant tempered glass, ceramics, etc.

  When hot-air circulating cooking is performed by the heating cooker 10, the square dish 400 provided with the top plate member 410 is placed on the placement net 320, and the material to be cooked is placed on the top plate member 410. Moreover, when performing oven cooking, a to-be-cooked material is directly mounted on the square plate 400 except for the top plate member 410. Further, when the cooking device 10 is used as an oven toaster, the material to be cooked is placed directly on the placing net 320. When the cooking device 10 is used as an oven toaster, an oven toaster dish different from the square dish 400 may be placed on the placement net 320.

  The space below the square plate 400 of the heating chamber 300 is closed by placing the square plate 400 on the placement net 320 during the hot-air circulating cooking that is the first cooking mode. The inside can be narrowed. As a result, hot air does not circulate in the entire area of the heating chamber 300, but hot air circulates in a space above the square plate 400, so that heating efficiency is increased and the temperature in the heating chamber 300 is likely to rise. Become. Thereby, shortening of heating time, reduction of power consumption, etc. can be aimed at.

  Two upper oven heaters are provided above the heating chamber 300 so as to extend between the left side wall 303 and the right side wall 304. Further, two lower oven heaters are provided below the heating chamber 300 so as to extend between the left side wall 303 and the right side wall 304. The configurations of the upper oven heater and the lower oven heater will be described later.

  Above the upper oven heater in the heating chamber 300, a fly heater 500 is provided. The frying heater 500 is a heater that operates in hot air circulation cooking, which is the first cooking mode. In the first cooking mode, the heating cooker 10 circulates the air heated by the frying heater 500 in the heating chamber 300 at high speed, thereby cooking fried food such as French fries and fried chicken without using oil. Mode. For example, the fly heater 500 can circulate hot air of about 80 to about 200 degrees in the heating chamber 300.

  The fly heater 500 is connected to the circuit board 120 and the power supply circuit. When performing hot air circulation cooking that is the first cooking mode, the user sets the cooking mode changeover switch 111 of the operation unit 110 to hot air circulation cooking. Further, the user designates the temperature necessary for cooking with the temperature setting dial 112 and designates the time necessary for cooking with the heating time setting dial 113. A control circuit on the circuit board 120 energizes the fly heater 500 to turn it on, and controls the temperature and heating time of the fly heater 500 in accordance with the content input from the user to the operation unit 110.

  As shown in FIG. 7, the fly heater 500 is configured as a spiral sheathed heater distributed in a plane and having a ventilation gap. The spiral sheathed heater has an advantage that a high heat capacity can be obtained because it has a ventilation gap and does not block the flow of hot air and has a large surface area. In addition, the sheathed heater has an advantage that it emits much far infrared rays, although its rise as a heat source is inferior to that of a quartz tube heater.

  A circular dish-shaped upper hood 610 and a lower hood 620 are provided above the fly heater 500 and below the duct 210. The upper hood 610 and the lower hood 620 have curved side surfaces and are provided so as to open downward. The upper hood 610 and the lower hood 620 are made of metal such as an aluminized steel plate.

  A space between the upper hood 610 and the lower hood 620 functions as an air flow path 630 that is a flow path for hot air. A suction port 640 for sucking hot air in the heating chamber 300 into the air flow path 630 is provided in the approximate center of the lower hood 620. Further, the outer edge portion of the air flow path 630 functions as a blowout port 650 that blows hot air into the heating chamber 300. The outlet 650 is configured in an annular shape. Further, a circulation fan 660 is provided in the air flow path 630 substantially in parallel with the fly heater 500. Circulation fan 660 is attached to the rotating shaft of motor 220.

  Due to the rotation of the circulation fan 660 by the power of the motor 220, the air in the heating chamber 300 is sucked up to the circulation fan 660 side. At that time, the air is heated by the fly heater 500 by passing through the ventilation gap of the fly heater 500. In this case, oil components and the like generated during cooking contained in the hot air are incinerated by heating. The air heated by the fly heater 500 is sucked into the air flow path 630 from the suction port 640 of the lower hood 620 (arrow A in FIG. 3). The air sucked into the air flow path 630 is blown into the heating chamber 300 as hot air from the blowout port 650 at the outer edge of the air flow path 630 in the centrifugal direction by the rotation of the circulation fan 660 (FIG. 3). Arrow B).

  The hot air blown out from the outlet 650 by the circulation fan 660 descends in the heating chamber 300 (arrow C in FIG. 3), and along the side surface portion 402 of the curved square plate 400, the bottom surface of the square plate 400. In the space between the portion 401 and the top plate member 410, it flows toward the center of the square plate 400. When hot air enters the square plate 400, the cooking material placed on the top plate member 410 can be heated from below. Further, since the hot air indicated by the arrow C flows between the inner surface of the door 130 and the heating chamber 300 at a high speed, the flow of the hot air functions as an air curtain, and dirt components from the heating chamber 300 are blocked and the door 130 Does not reach the inner surface. As a result, it is possible to prevent the inner surface of the door 130 (the glass inner surface of the window) from becoming dirty.

  The hot air is sucked upward in the square plate 400 by the circulation fan 660 (arrow D in FIG. 3), heated again by the fly heater 500, and sucked into the air flow path 630 from the suction port 640 (arrow A). ). When the heating cooker 10 operates in the first cooking mode, this circulation of hot air (arrows A to D in FIG. 3) is continuously repeated.

  Since the circulation fan 660 rotates, the hot air can be circulated efficiently by configuring the fly heater 500 in a circular shape and the blowout port 650 in an annular shape.

  Further, since the hot air is blown out almost directly from the blowout port 650, the hot air can be circulated efficiently by positioning the side surface portion 402 of the square plate 400 at a position almost directly below the blowout port 650.

  A hood cover 670 is provided on the upper hood 610 with a slight gap. The hood cover 670 is formed in a shape substantially the same as the upper hood 610. The hood cover 670 is made of a heat insulating material such as a stainless steel plate. The hood cover 670 functions as a partition member for preventing heat from the heating chamber 300 from being transmitted to the motor chamber 200. By providing a hood cover 670 with a gap between it and the upper hood 610, the heat insulation effect is further enhanced.

  Two upper oven heaters are provided above the heating chamber 300 so as to extend between the left side wall 303 and the right side wall 304. The upper oven heater located on the opening 310 side of the heating chamber 300 is referred to as a first upper oven heater 711, and the upper oven heater located on the back wall 305 side is referred to as a second upper oven heater 712.

  Further, two lower oven heaters are provided between the left side wall 303 and the right side wall 304 so as to be positioned below the heating chamber 300 and below the square plate 400. The lower oven heater located on the opening 310 side of the heating chamber 300 is referred to as a first lower oven heater 721, and the lower oven heater located on the back wall 305 side of the housing 100 is referred to as a second lower oven heater 722. Called.

  The oven heater is a heater that operates in the second cooking mode and generates radiant heat when energized. In the second cooking mode, the cooking device 10 functions as a so-called oven that heats the material to be cooked by the heat of the heater.

  The oven heater is connected to the circuit board 120 and the power supply circuit. When performing the oven cooking that is the second cooking mode, the user sets the cooking mode switching switch 111 of the operation unit 110 to the oven cooking. Further, the user designates the temperature necessary for cooking with the temperature setting dial 112 and designates the time necessary for cooking with the heating time setting dial 113. The control circuit on the circuit board 120 energizes the oven heater to turn it on according to the input content from the user to the operation unit 110, and controls the temperature and heating time of the oven heater.

  The heater for the upper oven and the heater for the lower oven are composed of, for example, a quartz tube heater. The quartz tube heater emits far infrared rays, but the amount generated is inferior to that of the sheathed heater. However, since it quickly rises as a heat source, it is suitable as a heat source for an oven. In addition, the number of the heaters for upper ovens and the heaters for lower ovens is an illustration to the last, and the number is not limited to two each.

  A reflector 800 is provided on each of the first upper oven heater 711 and the second upper oven heater 712. The reflection plate 800 allows the cooking material placed on the square dish 400 to be efficiently heated by reflecting the heat of the upper oven heater downward.

  A temperature detection unit 900 is provided in the heating chamber 300. The temperature detection unit 900 is for detecting the temperature in the heating chamber 300. The temperature detection unit 900 is configured using, for example, a liquid expansion thermostat. However, the temperature detection unit 900 is not limited to the liquid expansion thermostat, and other methods, for example, a temperature sensor using a thermistor may be used.

  The temperature detection part 900 detects the temperature in the heating chamber 300 in the hot-air circulating cooking that is the first cooking mode and the oven cooking that is the second cooking mode. As shown in FIGS. 3 and 4, in the embodiment, temperature detection unit 900 is provided on left side wall 303 of heating chamber 300.

  The temperature detection unit 900 is connected to the circuit board 120. When the temperature detection unit 900 detects a temperature equal to or higher than a predetermined temperature, the power supply to the heater is temporarily stopped and the temperature in the heating chamber 300 is adjusted. It has come to be.

<2. Other embodiments>
A cooking device 20 according to another embodiment of the present invention will be described with reference to FIG. In another embodiment, the door 130 that is opened and closed for putting in and out the material to be cooked includes a door frame 130A and a door glass 130B made of heat-resistant glass. The inside of the heating chamber 300 can be seen through the door glass 130B. An open / close detection switch 1000 is provided in a part of the door frame 130A, for example, in the upper right corner portion. The open / close detection switch 1000 is constituted by a micro switch, for example.

  The opening / closing detection switch 1000 is turned on / off in conjunction with opening / closing the door 130. An on / off signal of the open / close detection switch 1000 is supplied to the control unit. If the door 130 is inadvertently opened during cooking in the hot air circulating cooking mode, it is detected by the open / close detection switch 1000 that the door 130 has been opened, and the control unit stops the circulation fan 660, and A control operation that cuts off the power is performed.

  This is to prevent hot air from blowing out from the heating chamber 300 toward the user when the door 130 is opened carelessly. For example, in the case of deep-fried food cooking using bread crumbs, hot air containing bread crumbs or oil may blow out from the opening 310.

  The open / close detection switch 1000 operates similarly in the oven cooking mode. When the door 130 is opened during cooking in the oven cooking mode, all the heaters 711, 712, 721, and 722 installed above and below are turned off by the control unit. In this way, safety measures are taken against the case where the door 130 is inadvertently opened.

  In other embodiments, configurations other than those described above are the same as those in the embodiment, and description thereof is omitted to avoid duplication.

<3. Modification>
Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments, and various modifications based on the technical idea of the present invention are possible. In the embodiment, the combination of the quartz tube heater and the sheathed heater has been described as the heat source for cooking, but all the heaters may be configured by the sheathed heater, or all the heaters may be configured by the quartz tube heater. Also good.

  The heater provided in the heating chamber 300 may be a fly heater 500 and a lower oven heater. In this case, the frying heater 500 plays a role of heating the material to be cooked from above during oven cooking, which is the second cooking mode.

DESCRIPTION OF SYMBOLS 10 ... Cooking device 100 ... Case 110 ... Operation part 120 ... Circuit board 130 ... Door 140 ... Air supply port 150 ... Exhaust Mouth 200 ··· Motor chamber 210 ··· Duct 212 ··· Notch portion 220 ··· Motor 221 · · · Motor coil 230 · · · Cooling fan 300 · · · Heating chamber 400 ... Square plate 500 ... Fly heater 610 ... Upper hood 620 ... Lower hood 630 ... Air flow path 660 ... Circulation fan 711 ... First upper oven heater 712 ... Second upper oven heater 721 ... First lower oven heater 722 ... Second lower oven heater 800 ... Reflector 900 ...・ Temperature detector

Claims (3)

A door provided on one side of the housing and having a window for viewing the inside;
A heating chamber for storing the material to be cooked in the housing;
A motor chamber disposed above the heating chamber;
A motor mounted in the motor chamber;
An upper hood having a substantially circular dish shape disposed between the heating chamber and the motor chamber, expanding so as to curve toward the heating chamber, and opening downward;
A fan that is attached to the rotating shaft of the motor below the upper hood in the heating chamber , operates in a hot-air circulating cooking mode that sucks air in the heating chamber from below and sends it in a centrifugal direction ,
A substantially circular dish-shaped lower hood that is disposed below the fan, has a suction hole in the center, is widened to curve toward the heating chamber, and is opened downward. When,
An annular hot air blowout formed between the periphery of the upper hood and the periphery of the lower hood, and for blowing hot air sent from the fan downward to the heating chamber in the hot air circulation cooking mode. Mouth,
Is arranged below the fan, a first heater have a ventilation gap for passing the hot air from the bottom upwards, is operated in a hot-air circulating cooking mode,
It consists of an upper heater and a lower heater that are arranged separately in the upper and lower sides, the upper heater is arranged below the first heater, and the lower heater is arranged below the loading net below the heating chamber. A second heater operated in the oven cooking mode ,
The opening size of the upper hood is smaller than the distance between the door and the back wall facing the door, and the hot air blown downward from the hot air outlet has an air curtain function on the inner surface of the door. Having a heating cooker. The cooking device according to claim 1, further comprising a hood cover that overlaps the upper hood with a space for heat insulation therebetween. The first heater is a heater in which a heating element that generates heat when energized is provided in a metal cylinder, and the second heater is a heater in which a heating element that generates heat when energized is provided in a quartz glass cylinder. 2. The heating cooker according to 2.