JP5651637B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device, and more particularly to a cooking device provided with a hot-air circulating oven.

  2. Description of the Related Art Conventionally, in order to bake fish or the like, a cooking device has been known that has a grill box in which a direct heating means such as a burner or an electric heater is disposed in a heating chamber that accommodates an object to be cooked. According to the cooking device having the direct heating means, the food to be cooked can be cooked at a high temperature, so that the food to be cooked can be burnt firmly, and the aesthetics at the finish is excellent. Depending on the type and size, uneven baking is likely to occur, and protrusions such as a burner are disposed in the heating chamber, so that cleaning during cleaning is difficult.

  On the other hand, convection-type ovens using hot air circulation are widespread, and heating cookers with oven cabinets have also been proposed (for example, Patent Document 1).

  This type of heating cooker has, for example, an oven cabinet provided with a combustion chamber that generates combustion exhaust gas by burning gas with an oven burner, and a heating chamber that communicates with the combustion chamber and accommodates an object to be cooked. In addition, the combustion exhaust gas generated in the combustion chamber is fed as hot air into the heating chamber, and the food to be cooked is indirectly cooked by circulating the hot air into the heating chamber. For this reason, compared with the case where a direct heating means such as a burner is used, baking unevenness is less likely to occur in the cooking object, and it is possible to bake evenly into the cooking object. In addition, by circulating hot air, heat can be quickly distributed throughout the heating chamber, so that cooking in a short time is possible. Furthermore, since no protrusion such as a burner is provided in the heating chamber, even if fat or oily smoke is generated from the food to be cooked and adheres to the constituent walls in the heating chamber, dirt can be easily removed. .

JP 2000-249343 A

  However, in oven cooking using hot air as described above, the food to be cooked is less likely to be scorched compared to grill cooking using direct heating means. Therefore, in oven cooking, it is necessary to circulate hot hot air of about 280 ° C. to 300 ° C. to burn the food to be cooked. Although the object to be cooked can be scorched by heating with such high-temperature hot air, there is a problem that a large amount of oily smoke and odor components are discharged from the heating chamber through the exhaust passage.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to discharge oil smoke and odor components generated from a cooking object to the outside from the exhaust port when the cooking object is cooked in an oven. An object of the present invention is to provide a cooking device that can suppress the occurrence of the heat.

The present invention taken to achieve the above object
Heating means for generating hot air;
A heating chamber in which hot air generated by the heating means is circulated as hot air to heat an object to be cooked;
A circulation fan provided in a circulation passage communicating with the heating chamber and sending the hot air into the heating chamber and circulating the hot air into the heating chamber;
A motor that rotationally drives the circulation fan;
An exhaust port communicating with the heating chamber;
An exhaust passage for exhausting exhaust gas containing oily smoke and odor components generated from the cooking object in the heating chamber from an exhaust port;
In the exhaust passage, an afterburner as a deodorizing and deodorizing means for reducing oil smoke and odor components in the exhaust passing through the exhaust passage ,
A combustion chamber provided with an oven burner that generates gas by burning gas as the heating means;
In the heating cooker, the heating chamber communicates with the combustion chamber, and hot air generated by the oven burner is circulated as hot air.
It is a heating cooker which has a control circuit which controls so that the oven burner and the afterburner can be separately ignited and extinguished by different paths .

  By providing the circulation fan, the hot air generated by the heating means can be forcibly circulated as hot air in the heating chamber, so that oven cooking can be performed more efficiently, while the rotation of the circulation fan causes the heating chamber to Exhaust gas discharged to the exhaust passage increases. However, according to the heating cooker, since the exhaust passage has the deodorizing means in the exhaust passage, even when a large amount of exhaust is discharged from the heating chamber to the exhaust passage, the exhaust flowing from the heating chamber passes through the exhaust passage. When deodorizing, it is deodorized. Thereby, oil smoke and odor components in the exhaust discharged to the outside from the exhaust port can be reduced.

If an oven burner is used as the heating means and the oven burner is disposed in the combustion chamber outside the heating chamber, the hot air generated in the combustion chamber can be circulated into the heating chamber by the circulation fan, so that it is more efficient. Oven cooking can be performed. Also, if an afterburner is used as a deodorizing and deodorizing means, oil smoke and odor components in the exhaust gas generated in the heating chamber can be heated and burned by the afterburner, so that the oil smoke and odor components can be reduced more efficiently. it can.
In addition, the oven burner and the after burner are set so that they can be ignited and extinguished separately.For example, even after the oven cooking of the object to be cooked is finished and the oven burner is extinguished, The ignition state can be continued. On the contrary, it is also possible to perform oven cooking by burning only the oven burner without igniting the afterburner.

The heating cooker is preferably
A cooling fan that is provided coaxially with the circulation fan and cools the motor with air taken from the outside,
The cooling fan is installed in a cooling passage that communicates with a motor chamber in which the motor is accommodated and the exhaust port, and discharges cooling air after cooling the motor from the exhaust port to the outside.
The cooling passage is disposed in a state of being separated from the circulation passage and the exhaust passage.

  The heating cooker has a cooling fan for cooling the motor that rotates the circulation fan, and the cooling air positively taken into the motor chamber by the rotation of the cooling fan cools the motor in the motor chamber. After that, the air is forcedly discharged from the exhaust port through the cooling passage communicating with the motor chamber. Therefore, if the cooling passage communicates with the exhaust passage and the upstream side of the exhaust passage, the combustion flame of the afterburner is burned by the cooling air, and the smoke removal and deodorization performance is deteriorated. However, according to the heating cooker, since the cooling passage and the exhaust passage are separated and constitute separate flow paths, a relatively large amount of cooling air is vigorously moved by the cooling fan. Even if it flows and is discharged from the exhaust port, it is possible to prevent the afterburner provided in the exhaust passage from being affected by combustion. Further, since the cooling passage is separated from the circulation passage, the hot air flowing through the circulation passage is not cooled by the cooling air flowing through the cooling passage.

In the heating cooker, preferably,
The downstream end of the cooling passage is located behind the downstream end of the exhaust passage,
The exhaust passage is disposed at a position downstream of at least the location where the after burner is disposed and separated from the cooling passage by a partition plate.

  If the downstream end of the cooling passage is located behind the downstream end of the exhaust passage, two layers are formed: a layer in which high-temperature exhaust flows on the front side of the exhaust port and a layer in which low-temperature cooling air flows on the rear side. The In particular, since the cooling air is forcibly discharged from the exhaust port by the cooling fan, the discharge speed is faster than the exhaust discharged through the exhaust passage, and is difficult to be mixed with the high-temperature exhaust. For this reason, even if a wall surface is located behind the cooking device, the wall surface is protected from high-temperature exhaust by the cooling air. Moreover, since the exhaust passage is partitioned and separated by the partition plate adjacent to the cooling passage at least downstream from the location of the after burner, it is only possible to prevent the influence of the cooling air on the after burner. Instead, the exhaust passing through the exhaust passage between the afterburner and the exhaust port can be cooled by the cooling air passing through the adjacent cooling passage. Thereby, it can prevent that hot exhaust gas is discharged | emitted from an exhaust port more.

  As described above, according to the present invention, by providing a circulation fan, hot air can be actively circulated in the heating chamber, so that oven cooking can be performed more efficiently. In addition, even if a large amount of oily smoke or odor components are generated from the cooking object such as fish or meat by oven cooking, when the exhaust gas passes through the exhaust passage, it is lost by the deodorizing and deodorizing means, and is discharged from the exhaust port to the outside. Since the exhaust gas exhausted can be smoked and deodorized, there is no inconvenience that oily smoke or odor leaks into the kitchen during oven cooking.

By using an oven burner as the heating means, hot air having a higher temperature can be generated, so that the heating chamber can be rapidly heated. Further, by using an afterburner as a deodorizing and deodorizing means, even if a large amount of oily smoke or odor components are generated in the exhaust gas, these can be burned off by heating.
Furthermore, by providing a time difference between the ignition and extinguishing of the oven burner and the afterburner, it is possible to continue the combustion of the afterburner even after the oven cooking of the object to be cooked is finished and the oven burner is extinguished. The oily smoke and odor components remaining in the heating chamber even after extinguishing the oven burner can be burned out and removed. Thereby, the oil smoke and odor components in the exhaust discharged from the exhaust port can be further reduced.
On the other hand, in the case of cooked food that does not generate oily smoke or odor components even when heated, or in oven cooking where a sweet smell such as cakes or cookies is to be leaked to the outside, the oven cooking is performed without igniting the afterburner. It is also possible to do. Thus, according to the menu cooked by oven cooking, it becomes possible to provide a user-friendly cooking device.

  Furthermore, since the motor in the motor chamber can be actively cooled with the cooling air by the rotation of the cooling fan, the temperature rise of the motor itself can be suppressed, and the hot air can be circulated stably by the circulation fan.

  Since the exhaust passage through which the exhaust exhausted from the heating chamber flows and the cooling passage through which the cooling air that has cooled the motor flow are separated, the exhaust is exhausted even if a large amount of cooling air flows through the cooling passage vigorously. It is possible to prevent inconvenience that the combustion flame of the after burner provided in the passage is blown by the cooling air and causes defective combustion. Thereby, the exhaust gas discharged from the heating chamber can be smoked and deodorized more efficiently.

  In addition, since the downstream end of the cooling passage is arranged behind the downstream end of the exhaust passage, the cooling air that has cooled the motor is used to flow the high-temperature exhaust on the front side and the low-temperature on the rear side. Two layers of cooling air flow can be formed at the exhaust port, the high temperature exhaust discharged from the exhaust passage is blocked from flowing to the wall surface of the kitchen, and the wall surface is overheated by the high temperature exhaust. Can be prevented. Further, since the exhaust passage is partitioned and separated by the partition plate adjacent to the cooling passage at least downstream of the place where the after burner is disposed, the after burner is prevented while preventing the cooling air from affecting the after burner. Exhaust gas that passes through the exhaust passage between the exhaust port and the exhaust port is cooled by cooling air that passes through the adjacent cooling passage, thereby further preventing the wall surface from being heated.

It is a schematic cross-sectional perspective view which shows the heating cooker in embodiment of this invention. It is a cross-sectional principal part perspective view which shows the back part of the heating cooker in embodiment of this invention. It is a flowchart which shows an example of the oven cooking operation by the heating cooker in embodiment of this invention. It is a cross-sectional principal part perspective view which shows the back part of the heating cooker in the modification of embodiment of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional perspective view of a built-in gas stove in which a stove body 11 is incorporated in a state of being dropped into an opening of a countertop 10 of a system kitchen as a cooking device according to an embodiment of the present invention. The oven cabinet 3 incorporated in the gas stove is located below the counter top 10 and has a heating chamber 3a for accommodating the food to be cooked and a combustion chamber 3b provided below the heating chamber 3a. In this specification, the direction in which the door 32 side and the back side of the heating chamber 3a face each other is referred to as the front-rear direction, the width direction of the heating chamber 3a is referred to as the left-right direction, and the height direction of the heating chamber 3a is referred to as the up-down direction.

  The heating chamber 3a is provided horizontally on the left side of the stove main body 11, and by opening and closing the door 32 of the front panel, an object to be cooked can be taken in and out of the heating chamber 3a.

  The heating chamber 3a has an upper wall 33 that constitutes a ceiling portion, a lower wall 34 that partitions the lower combustion chamber 3b, left and right side walls 35, and a rear (back side) rear wall 36. The door 32 is closed so as to be openable forward. The heating chamber 3a can be opened by moving the door 32 forward.

  When the door 32 is pulled forward (front side), the plate 13 can be pulled out together with the door 32, and a grill net (not shown) set on the pulled-out plate 13 is placed on a cover such as a fish. After placing the food item, the food item is accommodated in the heating chamber 3a by moving the door 32 backward.

  A large number of exhaust holes 33 a communicating with the exhaust port 50 are formed behind the upper wall 33 of the heating chamber 3 a through the exhaust passage 5 formed above the upper wall 33. In addition, a large number of blow holes 36a for sending hot air into the heating chamber 3a are formed on the left and right sides of the rear wall 36 of the heating chamber 3a, and hot air in the heating chamber 3a is taken into the center thereof. A large number of suction holes 36b are formed. Further, a hot air passage 44 for circulating hot air of the combustion exhaust gas generated in the combustion chamber 3b as hot air to the heating chamber 3a is formed behind the rear wall 36 of the heating chamber 3a.

  The combustion chamber 3 b is a hot air having a lower wall 34 that constitutes a ceiling wall of the combustion chamber 3 b, a bottom surface that is disposed below the lower wall 34, left and right side surfaces, and a rear wall facing surface that is disposed facing the rear wall 36. An oven burner 43 to which gas is supplied via a gas supply pipe (not shown) is disposed behind the combustion chamber 3b. The combustion chamber 3b is configured such that combustion air is taken into the combustion chamber 3b by communicating the front with the outside. Accordingly, external combustion air and gas sucked from the front of the combustion chamber 3b are mixed and burned by the oven burner 43, whereby hot air of combustion exhaust gas is generated in the combustion chamber 3b.

  The rear of the combustion chamber 3b communicates with the hot air passage 44 formed behind the suction hole 36b by the rear wall 36 of the heating chamber 3a and the rear wall facing surface of the hot air passage forming member 45, and is generated in the combustion chamber 3b. The hot air of the combustion exhaust gas thus made becomes hot air and is sent into the hot air passage 44. The hot air passage forming member 45 has a rear wall facing surface on which the hot air of the combustion exhaust gas generated in the lower combustion chamber 3b is fed into the hot air passage 44 as hot air, and is formed on the left and right sides of the rear wall 36. In close contact with the rear wall 36 of the heating chamber 3a in such a manner that the upper and left and right peripheries of the suction hole 36b are surrounded and opened downward from the rear side of the rear wall 36 so that hot air is blown into the heating chamber 3a from the hole 36a. I'm allowed. Further, the rear wall facing surface of the hot air passage forming member 45 is formed with an opening 45a at a position facing the suction hole 36b in order to suck hot air through the hot air passage 44 by the circulation fan 6 described later.

  As shown in FIGS. 1 and 2, a circulation fan case 60 is provided behind the hot wall passage forming member 45 on the rear wall facing surface so as to surround the hot air passage 44 formed behind the rear wall 36 of the heating chamber 3a. It is arranged. The circulation fan case 60 is closed at the rear surface except for the insertion portion through which the rotation shaft of the motor 4 is inserted, and the upper end, the bottom surface, and the front end portions of both side surfaces are joined to the peripheral edge of the rear wall 36. Has been. Accordingly, a circulation passage 61 is formed which communicates with the hot air passage 44 through the opening 45a and communicates with the right and left blowing holes 36a formed in the rear wall 36 of the heating chamber 3a. The circulation passage 61 is provided with a circulation fan 6 for forcibly circulating hot air into the heating chamber 3a.

  The circulation fan 6 is fixed to the tip of the rotating shaft of the motor 4 located at the rear, and is installed at a position corresponding to the formation area of the central suction hole 36b of the rear wall 36 and the opening 45a of the rear wall facing surface. Has been. Therefore, when the circulation fan 6 is driven to rotate, the hot air in the heating chamber 3a sucked through the suction hole 36b formed in the rear wall 36 and the hot air generated by the hot air generated in the lower combustion chamber 3b are transferred to the hot air passage. 44 is sucked into the circulation passage 61 from the opening 45a and is fed into the heating chamber 3a through the blow holes 36a formed on the left and right sides of the rear wall 36. As a result, hot air circulates in the heating chamber 3a, the temperature in the heating chamber 3a is rapidly increased, and the temperature can be made uniform efficiently, such as fish and meat accommodated in the heating chamber 3a. Can be cooked in the oven.

  A motor chamber 40 in which the motor 4 is accommodated is provided at the rear of the circulation fan case 60 constituting the circulation passage 61. As shown in FIG. A supply cylinder 42 that is open to the outside is connected, and external air can be taken in via the supply cylinder 42. In the present embodiment, the motor chamber 40 is configured from a case that covers the periphery of the motor 4, but the motor chamber may be configured by a component wall of the stove body 11.

  A cooling fan 7 is disposed between the circulation fan case 60 and the motor 4. The cooling fan 7 is fixed to an intermediate portion in the axial direction of the rotating shaft of the motor 4. Between the cooling fan 7 and the motor 4, A cooling fan case 41 having a rear surface having an opening 41a in the center for cooling the motor 4 by the rotation of the cooling fan 7 is disposed. Further, the bottom surface and both side surfaces of the cooling fan case 41 are joined and closed with the circulation fan case 60, but an upper opening portion 41b is provided at the top of the cooling fan case 41 to discharge cooling air to the outside. Is formed. The rear of the upper opening portion 41 b is connected to a passage member 81 that extends rearward over the motor chamber 40 and opens toward the exhaust port 50. As a result, a motor chamber 40 in which the motor 4 is accommodated at the upstream end and a cooling passage 8 that communicates with the exhaust port 50 at the downstream end and discharges the cooling air after cooling the motor 4 from the exhaust port 50 to the outside are formed. Is done.

  The cooling passage 8 communicates with the motor chamber 40 via the opening 41 a of the cooling fan case 41, but is separated from the circulation passage 61 by the circulation fan case 60 so as to be disconnected. The cooling air is configured not to be sent into the hot air passage 44. Thereby, the temperature fall of the hot air by cooling air can be prevented.

  As described above, the exhaust passage 5 communicating with the exhaust hole 33a is formed behind the upper wall 33 constituting the ceiling portion of the heating chamber 3a. The exhaust passage 5 is opposed to the upper wall 33 at a predetermined interval and spaced apart from the exhaust cover 51. The exhaust cover 51 extends horizontally rearward, and the upper surface of the circulation fan case 60 is connected to the upper peripheral edge of the rear wall 36 of the heating chamber 3a. A partition in which a horizontal portion 53 extending horizontally from the rear of the cooling passage 8 to the rear and a standing portion 54 extending obliquely upward from the rear end of the horizontal portion 53 toward the upper exhaust port 50 is connected. And a plate 52. The upper end of the standing portion 54 forms a downstream end of the exhaust passage 5 and a downstream end of the cooling passage 8. The downstream end of the exhaust cover 51 that forms the upper portion of the exhaust passage 5 and the downstream end of the passage member 81 that forms the lower portion of the cooling passage 8 are connected to a cylindrical exhaust duct 9 that forms the exhaust port 50. . Thus, the cooling passage 8 is disposed in a state of being separated and separated from the exhaust passage 5 by the partition plate 52, and the exhaust from the exhaust passage 5 and the cooling air from the cooling passage 8 are They merge on the downstream side of the downstream ends of the passages 5 and 8 and are discharged to the outside through a single exhaust port 50. Note that the upper end of the standing portion 54 may extend to the exhaust port 50.

  At the rear of the horizontal portion 53 of the partition plate 52 constituting the exhaust passage 5, an afterburner 1 serving as a smoke removal and deodorizing means is arranged in a posture with the combustion surface facing upward. Accordingly, when the object to be cooked is accommodated in the heating chamber 3a and the circulating fan 6 is rotated to forcibly circulate the hot air in the heating chamber 3a, a part of the hot air is covered by the increase in the pressure in the heating chamber 3a. A large amount of exhaust gas containing oily smoke and odor components generated from the cooked product is exhausted from the exhaust hole 33a of the upper wall 33 to the exhaust passage 5. However, the after burner 1 is disposed in the exhaust passage 5. While the exhaust gas passes through the exhaust passage 5, the oil smoke and odor components in the exhaust gas can be burned out by the afterburner 1, and the exhaust gas sufficiently deodorized and deodorized can be discharged from the exhaust port 50.

  Further, since the exhaust passage 5 is disposed in a state of being separated from the cooling passage 8, a relatively large amount of cooling air is vigorously flowed through the cooling passage 8 by the cooling fan 7 and is discharged from the exhaust port 50. Even if it is discharged, it is possible to prevent the afterburner 1 provided in the exhaust passage 5 from being affected by combustion. In addition, since the afterburner 1 is provided so as to be positioned below the exhaust port 50, the exhaust gas is continuously heated by the afterburner 1 while rising up the exhaust passage 5 toward the exhaust port 50. The As described above, since the heating time of the exhaust gas by the afterburner 1 becomes long, oil smoke and odor components can be sufficiently burned out by the afterburner 1. Note that the afterburner 1 may be disposed on the exhaust cover 51 such that the combustion surface faces downward.

  The combustion surface of the afterburner 1 is formed in a horizontally long shape over substantially the entire width in the width direction of the exhaust passage 5, and a peripheral wall 1a is erected on the outer periphery of the combustion surface. The peripheral wall 1a makes it difficult for the exhaust gas flowing through the exhaust passage 5 to flow to the combustion surface, and the combustion flame of the afterburner 1 can be prevented from becoming unstable.

  Further, the exhaust gas deodorized and deodorized by the afterburner 1 of the exhaust passage 5 flows toward the exhaust port 50. In this embodiment, the exhaust passage 5 downstream from the afterburner 1 is partitioned to the downstream end. Since the plate 52 is arranged in a state of being separated and separated from the cooling passage 8, it is possible not only to prevent the influence of the cooling air on the afterburner 1, but also between the afterburner 1 and the exhaust port 50. The exhaust passing through the exhaust passage 5 therebetween can be cooled by the cooling air passing through the adjacent cooling passage 8. Thereby, it is possible to prevent the exhaust gas heated to a high temperature from being discharged to the outside through the exhaust port 50.

  Further, the exhaust gas cooled by the cooling air is discharged to the outside from an exhaust port 50 provided at the rear of the stove main body 11. In this embodiment, the downstream end of the cooling passage 8 is downstream of the exhaust passage 5. Since it is located behind the end, two layers are formed: a layer in which high-temperature exhaust flows on the front side of the exhaust port 50 and a layer in which low-temperature cooling air flows on the rear side. In particular, since the cooling air is forcibly discharged from the exhaust port 50 by the cooling fan 7, the discharge speed is faster than the exhaust discharged through the exhaust passage 5 due to the increase in the pressure in the heating chamber 3a, and the temperature is high. Difficult to mix with exhaust. For this reason, even if a wall surface is located behind the exhaust port 50, the wall surface can be protected from high-temperature exhaust by the cooling air.

  Although not shown, the gas stove of the present embodiment has a control circuit that controls the oven burner 43 and the afterburner 1 so that they can be ignited and extinguished through different paths. Thereby, for example, even if the oven burner 43 is extinguished, if the heating chamber 3a is still filled with oil smoke or the like, the circulation fan 6 and the cooling fan 7 are driven to rotate and the combustion of the afterburner 1 is continued. Thus, exhaust can be guided from the heating chamber 3a to the exhaust passage 5, and the exhaust can be smoked and deodorized.

  On the other hand, in the case of ingredients that are not concerned with oily smoke and odor during cooking of the cooking object, it is not necessary to ignite the afterburner 1 at the same time as the ignition of the oven burner 43, and the exhaust is directly discharged from the exhaust port 50. You may let them.

  Next, an example of operation control when oven cooking is performed using the gas stove of the present embodiment will be described based on the flowchart shown in FIG.

  The door 32 is pulled forward, and after cooking objects such as fish and meat are placed on the grill 13 (not shown) on the plate 13 from the heating chamber 3a, the door 32 is pushed backward, and the front of the heating chamber 3a. Close the opening. In step 1 (ST1), the power switch is turned on. In step 2 (ST2), when the start switch is turned on, oven cooking is started, and although not shown, the solenoid valve is opened. In Step 3 (ST3), the rotational drive of the circulation fan 6 and the cooling fan 7 is started, and subsequently, the oven burner 43 is ignited to generate combustion exhaust gas in the combustion chamber 3b.

  In addition, the afterburner 1 is ignited (step 4 (ST4)) and a timer is set (step 5 (ST5)) in accordance with the various mode switches of the oven that are input simultaneously with the start switch. Time until setup) is measured.

Although not shown, a door switch for detecting opening and closing of the door 32 is provided at a predetermined position of the door 32 and the oven cabinet 3, and before the time-up is recognized in Step 6 (ST6), If it is detected in step 10 (ST10) that the door 32 is opened by the door switch, for the sake of safety, the oven burner 43, the circulation fan 6, and further the cooling fan 7 are detected in step 11 (ST11). And all functions such as afterburner 1 are set to stop.
When the timer is up in step 6 (ST6) without opening the door 32, the solenoid valve is closed in step 7 (ST7), the oven burner 43 is extinguished, and the oven cooking is finished. To do.

  Even after the oven burner 43 is extinguished in the above step 7 (ST7), the combustion of the afterburner 1 and the rotational drive of the circulation fan 6 and the cooling fan 7 are continued. If the temperature sensor provided in the heating chamber 3a determines that the measured temperature in the heating chamber 3a is lower than the reference temperature, it is determined that smoke is no longer generated in the heating chamber 3a. At (ST9), the afterburner 1 is extinguished and the rotational drive of the circulation fan 6 and the cooling fan 7 is completed.

  Thus, since the afterburner 1 is ignited according to various mode switches selected simultaneously with the ON operation of the start switch in step 2 (ST2), the oil smoke and odor components contained in the exhaust in the heating chamber 3a are removed. The exhaust gas that can be surely burned out and has been smoked and deodorized can be discharged from the exhaust port 50 to the outside.

  In step 7 (ST7), even if the oven burner 43 is extinguished, the inside of the heating chamber 3a is still at a high temperature, so that the oil dripping on the plate 13 is heated from the cooking object to generate oil smoke. Sometimes.

  However, unless it is confirmed in step 8 (ST8) that the temperature in the heating chamber 3a has become lower than the reference temperature, the combustion of the afterburner 1 and the rotational drive of the circulation fan 6 and the cooling fan 7 are continued. Therefore, the motor 4 is actively cooled by the cooling fan 7, and at the same time, the outside air is also circulated in the heating chamber 3a and actively cooled. Further, the remaining hot air in the heating chamber 3 a is actively sent into the exhaust passage 5, and the afterburner 1 can burn out the oil smoke and odor components.

  In the flowchart shown in FIG. 3, the afterburner 1 is ignited almost simultaneously with the ignition of the oven burner 43. However, depending on the mode switch selected, the afterburner 1 is ignited simultaneously with the ignition of the oven burner 43. You don't have to. For example, after the burner 43 burns the afterburner 1 when the temperature in the heating chamber 3a reaches a predetermined temperature (for example, 230 ° C.) or after the oven burner 43 is ignited, It is also possible to automatically ignite the afterburner 1.

  In addition, when it is desired to discharge the sweet smell generated when baking confectionery such as cakes and cookies into the room, it is possible to perform oven cooking only by igniting the oven burner 43 without igniting the afterburner 1. .

  FIG. 4 is a cross-sectional main part perspective view showing a rear portion of the heating cooker in a modification of the present embodiment. In the heating cooker described above, the gas burner 43 is used as the heating means, and the afterburner 1 is used as the smoke removal deodorizing means. In this heating cooker, the oven burner 43 is disposed below the heating chamber 3a. As shown in the figure, an electric heater 48 is disposed in the circulation passage 61 behind the blow hole 36a, and a catalyst and a catalyst heater (not shown) are disposed in place of the afterburner 1. ing. As such an electric heater 48 and a catalyst heater, a sheathed heater capable of generating high-temperature hot air can be used. The lower part of the heating chamber 3a has the same configuration as that of the combustion chamber 3b of the heating cooker except that the oven burner 43 is not provided. It functions as a ventilation chamber for taking in external air. Therefore, in this heating cooker, when the oven fan is cooked, the rotation of the circulation fan 6 and the cooling fan 7 is started, and when the electric heater 48 is energized, hot air is generated in the circulation passage 61. Occur. And by the air introduced from the ventilation chamber below the heating chamber 3a, the hot air generated in the circulation passage 61 is sent out as hot air into the heating chamber 3a from the blowing hole 36a, and the hot air in the heating chamber 3a is Then, the air is sucked into the circulation passage 61 through a suction hole 36 b formed in the rear wall 36. Thereby, a hot air can be circulated in the heating chamber 3a, and oven cooking can be performed.

1 Afterburner (deodorizing and deodorizing means)
3 Oven box 3a Heating chamber 3b Combustion chamber 43 Oven burner (heating means)
44 Hot Air Passage 4 Motor 5 Exhaust Passage 6 Circulating Fan 61 Circulating Passage 7 Cooling Fan 50 Exhaust Port 52 Partition Plate 8 Cooling Passage

Claims (3)

Heating means for generating hot air;
A heating chamber in which hot air generated by the heating means is circulated as hot air to heat an object to be cooked;
A circulation fan provided in a circulation passage communicating with the heating chamber and sending the hot air into the heating chamber and circulating the hot air into the heating chamber;
A motor that rotationally drives the circulation fan;
An exhaust port communicating with the heating chamber;
An exhaust passage for exhausting exhaust gas containing oily smoke and odor components generated from the cooking object in the heating chamber from an exhaust port;
In the exhaust passage, an afterburner as a deodorizing and deodorizing means for reducing oil smoke and odor components in the exhaust passing through the exhaust passage ,
A combustion chamber provided with an oven burner that generates gas by burning gas as the heating means;
In the heating cooker, the heating chamber communicates with the combustion chamber, and hot air generated by the oven burner is circulated as hot air.
A heating cooker having a control circuit for controlling the oven burner and the after burner so that they can be ignited and extinguished separately by different paths . The heating cooker according to claim 1 , wherein
A cooling fan that is provided coaxially with the circulation fan and cools the motor with air taken from the outside,
The cooling fan is installed in a cooling passage that communicates with a motor chamber in which the motor is accommodated and the exhaust port, and discharges cooling air after cooling the motor from the exhaust port to the outside.
The heating cooker, wherein the cooling passage is disposed in a state of being separated from the circulation passage and the exhaust passage. The cooking device according to claim 2 ,
The downstream end of the cooling passage is located behind the downstream end of the exhaust passage,
The heating cooker is disposed in a state where the exhaust passage is separated from the cooling passage by a partition plate at least downstream of the place where the after burner is disposed.

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