JP2011099651A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein, in a conventional heating cooker, use of a dedicated heating means for heating a catalyst body increases its mounting cost, requires electric power to operate the heating means so as to increase electric power consumption and increases exhaust heat to an indoor side accompanying heating so as to increase cooling load in summer and other problems. <P>SOLUTION: This heating cooker includes a suction port body 28 having a suction port sucking exhaust air in a cooking chamber 17 and guiding the exhaust air to a cooking chamber exhaust air course 10. One portion of an upper heating heater 21 is arranged in the vicinity of the suction port of the suction port body 28. In the identical axially vertical cross section of the one portion of the upper heating heater 21, one end of an outer peripheral face of the upper heating heater 21 faces the inner side of the cooking chamber 17 and the other end faces the inner side of the suction port body 28. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is composed of a roaster itself that heats a cooking chamber with a heating element such as a heater, and cooks or heats an object to be heated, such as a fish, or cooking that incorporates such a roaster It is about a vessel.

  Conventionally, cooking has been performed in order to reduce indoor air pollution caused by odorous components and oily smoke generated from heated objects such as fish during cooking in the cooking chamber. An exhaust air passage that sucks indoor air and exhausts it outside the main body is provided with an air cleaning means such as a catalyst body including an oxidation catalyst. By such means, it is possible to reduce discomfort during cooking work by suppressing the discharge of white smoke etc. from the cooking room, or reduce the concentration of pollutants to reduce odors and indoor air pollution. Yes.

In order to decompose and remove pollutants from the exhaust gas by the catalyst body, it is desirable to increase the reaction rate by increasing the temperature of the catalyst adhering to the catalyst body so that sufficient catalyst activity is obtained.
Catalytic bodies used in household cookers are often used with Pd, Pt, etc. as catalyst, and are used by heating to about 300-500 ° C to obtain catalytic activity. During operation and before and after that, it is necessary to heat with a heater having an output of about 300 to 450 w. In order to increase the temperature of the catalyst in this way, various methods for heating the catalyst body using a heating means have been proposed.

For example, Patent Document 1 describes a device provided with a dedicated heating means for heating the catalyst body.
Patent Document 2 describes a cooking upper heating means that extends in the exhaust air passage to heat the catalyst body.
Further, Patent Document 3 describes a configuration in which an exhaust air passage and a catalyst body are provided above the upper heating means to heat the catalyst body.

JP 2006-329456 A (page 7, FIG. 2) Japanese Patent Application Laid-Open No. 2004-261486 (page 7, FIG. 3) Japanese Unexamined Patent Publication No. 2007-29141 (page 9, FIG. 1)

  However, in the heating cooker described in Patent Document 1 described above, since the dedicated heating means is used, the component cost and assembly cost for mounting the heating means are required, and the heating means is operated. There is a problem that electric power is required, power consumption increases, exhaust heat into the room accompanying heating increases, and the cooling load increases in summer.

  In the heating cooker described in Patent Document 2, since the catalyst is heated using the heating means for cooking, a dedicated heating means for heating the catalyst is not necessary, but the heating means is larger than the size required for cooking. The heating means for cooking, which is large and requires high cost, is provided in the exhaust air passage, so part of the heat generated by the heating means is exhausted without contributing to cooking, and is unnecessary to contribute to cooking There is a problem that the electric power is required and the power consumption increases, and the cooling load increases in summer and the like due to the increase in exhaust heat. In addition, in order to use the product for a long period of time, replacement is required due to a decrease in the performance of the catalyst body. However, there is a problem that the replacement cost is not considered and the maintenance cost increases.

  In the heating cooker described in Patent Document 3, since the catalyst is heated using the heating means for cooking, the heating means dedicated to the catalyst body is not necessary, and the heating means is provided in the cooking chamber. The heat generated by the heating means is generally used for cooking, and the catalyst body is heated by exhaust heat contained in the exhaust or by radiation that does not contribute to cooking, thereby suppressing unnecessary power consumption increase and exhaust heat to the room. However, since the exhaust duct is provided above, the height dimension in the cooking chamber becomes low when there is a restriction in the height direction, and cooking of food to be cooked with a large height dimension is not possible, and the height dimension of the product is There is a problem that it becomes expensive and cannot be stored on the shelf, and the cost of packaging and transportation increases. In addition, in order to use the product for a long period of time, replacement is required due to a decrease in the performance of the catalyst body. However, there is a problem that the replacement cost is not considered and the maintenance cost increases.

  Therefore, the present invention aims to solve the above-mentioned problems, and without using a heating means for heating the catalyst, heats the catalyst using the exhaust heat of cooking, reduces the component cost and assembly cost, and consumes Reduced electric power, unnecessary waste heat, improved maintainability, increased cooking cabinet height and increased cooking height, reduced heating and low environmental impact with a simple structure with low indoor air pollution. A cooker is provided.

    In order to solve the above-described problem, a heating cooker according to the present invention is a heating cooker including a cooking chamber that accommodates an object to be heated, and is a rod-shaped heating heater disposed at least above the cooking chamber, and cooking. An exhaust air passage for exhausting the exhaust of the chamber to the outside of the heating cooker through an exhaust port, a suction port for sucking the exhaust from the cooking chamber, and a suction port body for guiding the sucked exhaust to the exhaust air passage; A portion of the heater is disposed in the vicinity of the suction port of the suction port body, and in the same cross section perpendicular to the axial direction of the portion of the heater, one end of the outer peripheral surface of the heater faces the cooking chamber side, The other end faces the inside of the suction port body.

  According to the present invention, when passing through the suction port of the suction port body on the cooking chamber side of the exhaust air passage, water vapor and oily smoke contained in the exhaust gas are vaporized by the heater, thereby reducing white smoke from the cooking device. can do.

In addition, if a catalyst is provided in the exhaust air passage or in the suction port, the catalyst body is formed by using the radiation that has a low contribution rate to cooking that does not reach the object to be cooked from the heater and the exhaust heat contained in the exhaust. Heating the catalyst increases the catalytic activity, improves the cleanliness of the exhaust, and by using a normal cooking heater, the cost of the heating means does not increase, and unnecessary power consumption and exhaust heat can be reduced. it can.
Furthermore, since at least a part of the outer periphery of the heater arranged so as to partially block the suction port of the suction port body faces the inside of the cooking chamber, the radiation reaching the object to be heated from the heater is generally equivalent. Therefore, cooking can be performed without hindrance while the catalyst body is heated.
Furthermore, if the exhaust air passage is connected to the side wall surface of the cooking chamber, there is no effect on the height direction of the cooking chamber, and the height of the cooking chamber can be increased with the same housing height. Because it can store and cook large items to be cooked, it can reduce the concentration of exhaust smoke and pollutants, as well as provide a cooking device that has low environmental impact and high cooking ability with reduced product costs. it can.

It is a perspective view of the whole heating cooker which shows Embodiment 1-5 of this invention. 1 is a perspective view of a main body 1 in a state where a top plate 4 and an intake / exhaust port cover 5 of a heating cooker showing Embodiment 1 of the present invention are removed. FIG. The perspective view of the main body 1 of the heating cooker which shows Embodiment 1 of this invention in the state which removed the housing | casing upper surface 3, the top plate 4, the inlet / outlet cover 5, the radiant heater 13, and the induction heating coil unit 11 of the front right side It is. The perspective view of the board case unit 15 of the right side which shows Embodiment 1-5 of this invention is shown. It is a perspective view which shows the whole cooking chamber 17 which shows Embodiment 1, 2 of this invention. It is a perspective view of the state which removed the upper surface of the cooking chamber 17, and the cooking chamber door 7 which show Embodiment 1 of this invention. It is a bottom side perspective view of the assembly state of the cooking chamber exhaust duct 10 and the drive airflow duct 20 showing Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of a suction port lower part 27 and a catalyst body 31 showing Embodiment 1 of the present invention. It is side surface sectional drawing of the cooking chamber exhaust air path 10 part of the main body 1 which shows Embodiment 1 of this invention. It is side surface sectional drawing of the heating cooker of Embodiment 2 for implementing this invention. FIG. 11 showing the second embodiment of the present invention is an exploded perspective view of the suction port lower part 27 and the catalyst body 31. The perspective view of the main body 1 in the state which removed the housing | casing upper surface 3, the top plate 4, the inlet / outlet cover 5, the radiant heater 13, and the induction heating coil unit 11 of the front right side of the heating cooker which shows Embodiment 3 of this invention It is. It is a perspective view of the state which removed the upper surface of the cooking chamber 17, and the cooking chamber door 7 which show Embodiment 3 of this invention. It is a disassembled perspective view of the state which removed the upper surface of the cooking chamber 17, and the cooking chamber door 7 which show Embodiment 3 of this invention. FIG. 6 is an exploded perspective view of an exhaust port front part 37 and a second catalyst body 36 showing Embodiment 3 of the present invention. It is side surface sectional drawing of the cooking chamber exhaust air path 10 part of the main body 1 which shows Embodiment 3 of this invention. The perspective view of the main body 1 of the heating cooker which shows Embodiment 4 of this invention in the state which removed the housing | casing upper surface 3, the top plate 4, the inlet / outlet cover 5, the radiant heater 13, and the induction heating coil unit 11 of the front right side It is. It is a perspective view of the state which removed the upper surface of the cooking chamber 17, and the cooking chamber door 7 which show Embodiment 4 of this invention. It is a perspective view of the state which combined the driving gas air path 40 with the cooking chamber exhaust air path 7 which shows Embodiment 4 of this invention. It is front sectional drawing of the drive gas wind path 40 part of the main body 1 which shows Embodiment 4 of this invention. It is side surface sectional drawing of the cooking chamber exhaust air path 10 part of the main body 1 which shows Embodiment 4 of this invention. The perspective view of the main body 1 in the state which removed the housing | casing upper surface 3, the top plate 4, the inlet / outlet cover 5, the radiant heater 13, and the induction heating coil unit 11 of the front right side of the heating cooker which shows Embodiment 5 of this invention It is. It is a perspective view of the state which removed the upper surface of the cooking chamber 17, and the cooking chamber door 7 which shows Embodiment 5 of this invention. It is a disassembled perspective view of the state which removed the upper surface of the cooking chamber 17, and the cooking chamber door 7 which shows Embodiment 5 of this invention. FIG. 10 is an exploded perspective view of an exhaust air passage upper surface part 43 and a first catalyst body 35 showing Embodiment 5 of the present invention. It is side surface sectional drawing of the cooking chamber exhaust air path 10 part of the main body 1 which shows Embodiment 5 of this invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing the entire heating cooker according to Embodiment 1 for carrying out the present invention. In FIG. 1, a housing upper surface 3 is detachably disposed on the housing 2 of the main body 1 of the heating cooker. An intake / exhaust port cover 5 is arranged on the back side of the upper surface 3 of the housing, and a top plate (also called a top plate) 4 is arranged in the center. A cooking room door 7 is provided in the center on the front side of the housing 2 and is opened and closed so that heated objects to be cooked in the cooking room 17 continuing from the cooking room door 7 to the back side can be taken in and out of the cooking room 17. It is possible. The cooking chamber door 7 is detachable for maintenance such as cleaning the cooking chamber 17 and the cooking chamber 17 itself. An operation unit 6 is provided on both sides of the cooking chamber door 7. In the present embodiment, the cooking chamber 17 is arranged in the center of the housing 2, but even when arranged close to one of the side surfaces or when the operation parts on both sides are not arranged, The effect is obtained as well.

  An object to be heated (not shown) is placed on the top plate 4. In the present embodiment, the cooking is also possible on the top plate. However, the cooking function on the upper surface may be mounted as necessary, and the upper surface may be a simple exterior covering the cooking chamber 17. The intake / exhaust port cover 5 is air permeable, and the airflow of intake and exhaust passes smoothly.

FIG. 2 is a perspective view of the main body 1 with the top plate 4 and the intake / exhaust port cover 5 of the cooking device removed. A housing exhaust port 9 is provided at the center of the rear surface side of the housing upper surface 3, and a housing air intake port 8 is provided on the left and right sides. The housing exhaust port 9 is connected to the cooling air exhaust air passage 14 and exhausts the cooling air. Is done. A cooking chamber exhaust air passage 10 is disposed in the cooling air exhaust air passage 14, and exhaust from the cooking chamber 17 is also performed from the housing exhaust port 9. In a normal use state, the casing exhaust port 9 is covered with the intake / exhaust port cover 5.
Below the top plate 4, the induction heating coil unit 11 is arranged on the left and right sides of the front side, and the radiant heater 13 is arranged in the center of the back side, and the object to be heated placed on the top plate 4 Used for heating. It is installed according to the necessity of the cooking function on the top plate 4, and is not installed when the cooking function is unnecessary.
Below the induction heating coil unit 11 and the radiant heater 13, a cooking chamber storage unit 19 is provided, and a cooking chamber 17 is disposed therein. Cooking, steaming, etc., such as baking and steaming, are performed in the space inside the cooking chamber 17.

FIG. 3 is a perspective view of the main body 1 in a state where the casing upper surface 3, the top plate 4, the intake / exhaust port cover 5, the radiant heater 13, and the induction heating coil unit 11 on the right side of the front surface of the cooking device are removed.
Substrate case units 15 are arranged on both sides of the cooking chamber storage unit 19. The inlets of the substrate case unit 15 are connected to the left and right casing inlets 8, respectively. A chamber 16 is disposed below the induction heating coil unit 11 and connected to the exhaust port of the substrate case unit 15. An air outlet is provided on the upper surface of the chamber 16.
An opening of the cooling air exhaust air passage connection port 20 is provided behind the cooking chamber storage unit 19.
The cooling air sucked from the housing intake port 9 passes through the substrate case unit 15, then flows into the connected chamber 16 from the exhaust port of the substrate case unit 15, and is blown out from the outlet on the upper surface of the chamber 16. After the heating coil unit 11 is cooled, it flows into the cooling air exhaust air passage 14 from the cooling air exhaust air passage connection port 20 and is exhausted out of the housing 2 through the housing exhaust port 9.

FIG. 4 is a perspective view of the right substrate case unit 15. The configurations of the left and right substrate case units 15 are substantially symmetrical, and will be described using the right side. The board case unit 15 is provided with a cooling fan 18 and houses an electronic circuit board 12 on which electronic components are mounted. The electronic circuit board 12 includes a part that becomes an object to be cooled due to heat generation, and includes a heat sink (cooling fin) in order to improve cooling efficiency.
The board case unit 15 is formed as an integral air path from the rear side intake port to the front side exhaust port, and when the cooling fan 23 operates, the cooling air is sucked from the intake port and passes through the cooling fan 18. After the object to be cooled of the internal electronic circuit board 12 is cooled, it is exhausted from the exhaust port.

FIG. 5 is a perspective view showing the entire cooking chamber 17. A cooking room exhaust air passage 10 is provided on the back of the cooking room 17 and communicates with the cooking room 17 so that smoke generated during cooking in the cooking room 17 is exhausted. A cooking room door 7 is provided in front of the cooking room 17. The cooking chamber door 7 is opened and closed by sliding back and forth so that the heated object inside can be taken in and out.
An opening (not shown) capable of inhaling is provided in any of the contact portion / joint with the cooking chamber 17, the cooking chamber door 7, and the wall surface of the cooking chamber 17, so that the intake air accompanying the exhaust is smoothly performed. It does not interfere with exhaust.

FIG. 6 is a perspective view showing a state where the upper surface of the cooking chamber 17 and the cooking chamber door 7 are removed. An upper heater 21 is disposed above the cooking chamber 17, a cooking table 22 on which an object is placed is disposed below the cooking heater 17, a lower heater 23 is disposed below the cooking heater 22, and a saucer 24 is provided below the cooking heater 22. It is done.
A plurality of temperature sensors 25 are provided on the inner surface of the cooking chamber 17 so that the temperature in the cooking chamber 17 can be detected.

A suction port body 28 is provided on the back of the cooking chamber 17. The opening inside the cooking chamber 17 of the suction opening 28 surrounds a part of the outer periphery of the cross section perpendicular to the longitudinal direction of the upper heater 21 in a range where radiation from the upper heater 21 to the object to be heated is obtained, The suction port body 28 and the upper heater 21 form a suction port. From the suction port to the rear opening of the cooking chamber 17 and the cooking chamber exhaust air passage 10, the cooking chamber is communicated so as to be smoothly exhausted.
In other words, the heating cooker according to the present embodiment is a heating cooker including a cooking chamber 17 that accommodates an object to be heated such as a fish, and is a rod-shaped upper heating disposed at least above the cooking chamber 17. Heater 21, cooking chamber exhaust air passage 10 that exhausts the exhaust of cooking chamber 17 to the outside of the heating cooker through housing exhaust port 9, and a suction port that sucks the exhaust from cooking chamber 17 A suction port body 28 that leads the exhaust to the cooking chamber exhaust air passage 10, and a part of the upper heater 21 is disposed in the vicinity of the suction port of the suction port body 28, and the part of the upper heater 21 is In the same cross section perpendicular to the axial direction, one end of the outer peripheral surface of the upper heater 21 faces the inside of the cooking chamber 17 and the other end faces the inside of the suction port body 28.
In the present embodiment, the upper heater 21 is illustrated as a straight rod-shaped member in the vicinity of the suction port of the suction port body 28, but is not limited thereto, and draws a curve. Alternatively, it may be curved or formed into a wave shape. Further, the cross-sectional shape of the upper heater 21 is not limited to a circular shape, and may be any shape such as an ellipse, a flat shape, or a polygonal shape.

On the other hand, the portion of the upper heater 21 near the suction port of the suction port body 28 extends in the same direction as the extension direction of the suction port (horizontal direction in the present embodiment) when viewed from the front of the suction port. The exhaust port is arranged so as to partially close the exhaust port, and the exhaust gas passing through the intake port is heated in contact with this portion of the upper heater 21. Further, this portion of the upper heater 21 not only emits radiation that contributes to heating the heated member of the cooking chamber 17 on one side in the same vertical cross section in the axial direction, but at the same time on the opposite side, Radiation into the cooking chamber exhaust air passage 10 can be performed, and as a result, it can contribute to heating of the catalyst body described later.
In the present embodiment, the heated object placed on the cooking table 22 is heated at once from the vertical direction by the upper heater 21 and the lower heater 23, but a heater may be provided only above. The same heating cooking is possible by reversing the top and bottom of the object to be heated, and the effect of the present invention can be obtained in the same manner regardless of the number and arrangement of the heaters.

FIG. 7 is an exploded perspective view of the suction port body 28 with the upper surface of the cooking chamber 17 and the cooking chamber door 7 removed.
The suction port body 28 includes a suction port body upper part 26, a suction port body lower part 27, and a suction port body upper surface guide 29. The suction port body upper surface guide 29 is integrated with the rear wall surface of the cooking chamber 17, and in order to form the rear opening of the cooking chamber 17, the rear member is cut and formed into a guide shape.
The suction port body upper part 26 is fixed to the rear wall surface by the fastening member 30 so as to cover the suction port body upper surface guide 29 from above.
A catalyst body 31 is engaged with the lower suction port component 29, and can be attached and detached integrally by removing the fastening member 30. The catalyst body holding part of the suction port lower part 29 is inserted into the cooking chamber exhaust air passage 10, and after the insertion part is pulled forward, it can be detached without removing the upper heater 21 by moving downward, By opening or removing the cooking chamber door 7, the suction guide lower part 27 integrated with the catalyst body 35 can be attached and detached from the front opening of the cooking chamber 17.

FIG. 8 is an exploded perspective view of the suction port lower part 27 and the catalyst body 31.
The catalyst body 31 is inserted from above the suction port lower part 27 and is engaged with the wall surface and the claw portion of the suction port lower part 27 so that the catalyst body 31 does not come off during the detachment work from the main body 1. . Moreover, the nail | claw part which engages is made into the minimum magnitude | size which can engage, and does not prevent ventilation of the exhaust_gas | exhaustion from a cooking chamber.

FIG. 9 is a side sectional view of the cooking chamber exhaust air passage 10 portion of the main body 1.
The front end side of the suction port upper surface guide 29 forms a suction port with the outer peripheral surface of the upper heater 21, and a guide surface 33 having a substantially constant air passage width is formed, and a surface having a shape similar to the outer peripheral surface. Etc. The inlet port upper surface guide 29 is formed so that the surface from the guide surface 33 to the cooking chamber exhaust air passage 10 is smoothly connected to the upper surface of the cooking chamber exhaust air passage 10 so that at least the connection portions are the same surface.
After passing through the upper heater 21 of the suction opening 28 and the cooking chamber exhaust air passage, the air passage is not bent and the exhaust gas passes with little pressure loss.
In addition, a space is provided so that radiation from the upper heater 21 directly reaches the catalyst body 31 and there is almost no shielding, and the upper heater 21 overlaps the height range of the catalyst body 31. And the portion from which the radiation from the outer peripheral surface of the upper heater 21 reaches vertically is included in the inflow surface of the catalyst body 31, so that the radiation from the upper heater 21 can be received efficiently.

Further, the surface of the inner surface from the opening in the cooking chamber 17 of the suction port body 28 to the catalyst body 31 is subjected to a surface treatment with high reflectivity, and the radiation from the upper heater 21 is reflected with less absorption. Thus, the catalyst body 31 is reached.
The cooking chamber exhaust air passage 10 is formed in an approximately L shape, and is composed of a horizontal portion on the cooking chamber 17 side and a vertical portion on the housing exhaust port 9 side, and a catalyst body 31 is disposed on the horizontal cooking chamber 17 side. An exhaust port is provided on the upper surface of the vertical part, and a driving gas inlet 34 is provided on the opposite bottom surface. A part of the cooling air flowing in from the cooling air exhaust air passage connection port 20 flows into the cooking chamber exhaust air passage 10 from the driving gas inlet 34 and functions as a driving gas for the ejector. By attracting the air in the cooking chamber exhaust air passage 10 in the process of flowing to the mouth and exhausting, the odor components and oily smoke generated in the cooking chamber 17 are sucked and exhausted. In the present embodiment, suction / exhaust is performed using an ejector, but the ascending airflow generated by heating in the cooking chamber 17 is used to exhaust or exhaust the cooking chamber using an exhaust fan. The effects of the present invention can be obtained in the same manner regardless of the suction / exhaust means.

Next, the operation of the cooking device will be described.
In the heating cooker configured as described above, the heating of the induction heating coil unit 11, the radiant heater 13, and the cooking chamber 17 is controlled by the electronic circuit board 12 by the operation of the operation unit 6, and heating by each heating means is performed. Cooking is done.
By providing the induction heating coil unit 11 and the radiant heater 13 above the cooking chamber 17, the top plate 4 on the top surface of the main body 1 can be cooked in a pan, etc., and the cooking range can be expanded and highly functionalized. Become.
Here, cooking in the cooking chamber 17 mainly related to the present invention will be described.
In the cooking chamber 17, the object to be heated placed on the cooking table 22 is heated and cooked. The object to be heated may be a food material such as fish as it is, or may be a wrapped product or a cooking container.
By the operation of the operation unit 6, the cooking menu of the cooking chamber 17 is selected, and the cooking operation is started.

The output of the upper heater 21 and the start timing of the operation of the lower heater 23 are detected by the selected cooking menu, the load of purifying smoke and odor components, and the plurality of temperature sensors 25 in the cooking chamber 17 Control based on output.
At the start of the cooking operation, the upper heater 21 and the cooling fan 18 are in an operating state, heating is started from the upper surface of the article to be heated, and the catalyst body 31 is also heated.
By first operating the upper heater 21 to raise the temperature of the catalyst body 31, the activity of the catalyst can be enhanced and the purification performance can be enhanced. At the start of cooking, the temperature of the catalyst body 31 is room temperature, but at the start of cooking, the temperature in the cooking chamber 17 and the temperature of the object to be heated are low, and no smoke or odor substances are generated during cooking. If the temperature of the catalyst body rises and the purification performance is obtained before smoke or smoke is generated, the function of the catalyst body 31 is generally exhibited. Further, by attaching a catalyst having a relatively low active temperature such as Mn or Pt to the catalyst body 31, it is possible to shorten the time from the start of cooking until a predetermined purification performance is obtained. Since Mn can obtain catalytic activity even at room temperature, it is effective in such applications.

The upper heater 21 operates and the output of each temperature sensor 25 in the suction port body 28 and the cooking chamber 17 reaches a predetermined temperature or a predetermined time after reaching a predetermined temperature according to the selected cooking menu software. Thereafter, the heating operation of the lower heater 23 is started.
Control that the heating of the upper and lower surfaces of the object to be heated is adjusted by the control of the cooking software, so that the output of the upper heater 21 where the heating operation has been performed previously becomes low and the output of the lower heater 23 becomes high However, the heating operation of the upper heater 21 is not completely stopped and a certain amount of heating is maintained, and when the exhaust gas passes through the suction port composed of the suction port body 28 and the upper heater 21. Steam and oily smoke are vaporized to suppress white smoke. At the same time, the temperature of the catalyst body 31 is also heated by the radiation of the upper heater and made higher than the exhaust temperature of the cooking chamber 17, so that the purification performance is enhanced. The output by the heating operation of the upper heater 21 is set to a predetermined output depending on the type of catalyst attached to the catalyst body 31, and each catalyst has a temperature at which a predetermined purification performance can be obtained.

The output of the temperature sensor 25 adjusts the output of the upper heating heater 21 and the lower heating heater 23 to increase the purification performance and the cleanliness of the exhaust, and is adjusted by the cooking software including the control for heating cooking appropriately Is done.
Since the individual controls differ depending on the cooking menu, a typical example is described. However, these controls are not always performed by adjustment with the control in which cooking is properly performed, and appropriate as part of the overall control. The following control is performed at the timing.
For example, the temperature of the catalyst body 31 is estimated from the temperature in the cooking chamber 17 obtained from the output of the temperature sensor 25 in the cooking chamber 17 and the output of the upper heater 21 at that time, and the necessary purification performance is obtained. When the temperature is lower than the predetermined catalyst temperature, control to increase the output of the upper heater 21 is performed, and further, the load of the catalyst due to the generation of smoke and odor in the cooking process (elapsed time) according to the type of cooking menu The upper heater 21 is compared with the estimated value of the catalyst temperature from the output of the temperature sensor 25 and the output of the upper heater 21 so that the catalyst temperature at which the catalyst purification capability required at each timing is obtained. Output is controlled.
The average output of the heaters such as the upper heater 21 and the lower heater 23 may be controlled by ON / OFF control of short-time energization / non-energization, and current flows without being energized even in the operating state. There is no state.

Next, the operation of the cooling fan 18 in the cooking chamber 17 and the suction of the exhaust gas in the cooking chamber 17 will be described in detail. Heat is generated at 800 ° C., and the temperature in the cooking chamber 17 is 200 to 300 ° C. Even if the wall surface of the cooking chamber 17 is provided with a certain heat insulating heater, the temperature in the casing rises due to radiation and heat transfer.
In order to avoid the components from functioning and shortening the service life when the temperature in the housing rises, the cooling fan 18 cools each component in the housing to a temperature lower than the heat resistant temperature.

When the cooling fan 18 operates, external air passes through the intake / exhaust port cover 5, flows into the suction port of the substrate case unit 15 from the housing intake port 9, and is sucked and sent to the cooling fan 18 to be supplied to the substrate case unit 15 After cooling the self-heating due to the operation of the components mounted on the electronic circuit board 12 inside, it is sent out from the board case unit and flows into the chamber 16. The cooling air that has flowed in is blown out from the air outlet 17 on the upper surface of the chamber 16, cools the induction heating coil unit 11 arranged above, and then flows into the cooling air exhaust air passage connection port 20 on the rear side. The part passes through the cooling air exhaust air passage 14, and part passes through the cooking chamber exhaust air passage 10 from the driving fluid inlet 34 and is exhausted from the housing exhaust port 9 through the intake / exhaust cover 5 to the outside of the housing. The
Exhaust gas flowing into the cooking chamber exhaust air passage 10 from the driving fluid inlet 34 is ejected as a driving fluid inside the vertical portion of the cooking chamber exhaust air passage 10 toward the upper surface exhaust port, so that the driving fluid inlet 34 has a slit shape. By functioning as a nozzle and forming a jet in the cooking chamber exhaust air passage 10, the air in the cooking chamber 17 is sucked through the horizontal portion of the cooking chamber exhaust air passage 10 by functioning as an ejector.

Next, the operation of purifying oily smoke and odor components generated in the cooking process will be described.
When cooking in the cooking chamber 17, steam, oily smoke, odor components, etc. are generated from the ingredients that are to be heated, and the steam and fat from the ingredients volatilize in contact with the saucer 24 and the lower heater 23. As a result, steam, oily smoke, odor components, etc. are generated and diffused into the cooking chamber 17. The diffused steam, oily smoke, and odor components are sucked from the suction port formed by the suction port body 28 and the upper heater 21. The sucked steam and oily smoke are vaporized when passing near the upper heater 21 and become gas from a fine liquid, and white smoke in the exhaust can be suppressed. Steam is vaporized at 100 ° C or higher, and oily smoke is accelerated at 240 ° C or higher. Therefore, it is desirable to keep the temperature of the inlet at 240 ° C or higher. In addition, the narrower the width of the slit-shaped suction port formed in the suction port body 28 and the upper heater 21 (in the longitudinal section of the upper heater 21), the higher the contact with the upper heater 21 and the more the vaporization is promoted. However, about 1 to 10 mm is good for household cooking appliances, including the balance of exhaust air volume / flow velocity and pressure loss. Further, an air passage along the outer peripheral surface of the upper heater, such as a suction air passage on the upper side of the upper heater 21, which is formed by the inner surface on the front end side of the upper surface guide 29 of the suction port and the outer peripheral surface of the upper heater 21. As a result, contact with the upper heater 21 is further increased, vaporization is promoted, and white smoke can be reduced.

The exhaust gas that has passed through the suction port body 28 flows into the catalyst body 31, and oil and odor components contained in the exhaust gas are oxidized and decomposed by the catalyst attached to the catalyst body 31, and the concentration is reduced and purified. The decomposition of contaminants by the catalyst is more advantageous at higher temperatures where the catalytic activity is higher, and the purification performance is improved. The catalyst is heated by the exhaust heat contained in the exhaust and the radiation from the upper heater 21 that has little contribution to cooking in the direction toward the back of the cooking chamber, and the radiation to the object to be heated is almost equivalent to the state without the suction port 28. As a result, a finished state in which cooking is almost unchanged is obtained.
In order to increase the catalytic activity and improve the purification performance, the outer circumferential surface of the upper heater 21 is arranged so that the range in the height direction of the catalyst body 31 and the upper heater 21 overlap so that the catalyst is efficiently heated. By providing a portion where the perpendicular from the vertical crossing of the inflow surface of the catalyst body 31 allows the radiation from the upper heater 21 to enter the catalyst body at an angle close to the vertical, it is efficiently heated and the suction port By increasing the reflectivity of the inner surface of the body 28, the radiation into the suction port body 28 is reflected and incident on the catalyst body so that heating can be performed more efficiently. Exhaust gas purified by the catalyst body 31 and having improved cleanliness is exhausted from the cooking chamber exhaust air passage 10 into the room through the casing exhaust port 9 and the intake / exhaust port cover.

Next, the maintenance operation of the catalyst body 31 will be described.
First, the maintenance operation of the catalyst body 31 in the catalyst regeneration mode instructed from the operation panel 6 will be described.
When cooking in the cooking chamber 17 for a certain period of time, the catalyst body 31 could not be completely decomposed, and contaminants such as oil in the exhaust adhered to it, resulting in a reduction in purification capacity and exhaust smoke and odor remaining It may become.
In such a state, when the catalyst regeneration mode is instructed by operating the operation panel 6, the cooling fan 18 is operated to exhaust the cooking chamber 17, and the upper heater 21 is in an operating state, so that the catalyst body 31 is heated, and the oil and contaminants adhering to it by catalytic activity are oxidized and decomposed and removed, and the purification performance of the catalyst body 31 is recovered and regenerated.

The heating temperature of the catalyst body 31 is a temperature obtained by subtracting the temperature rise due to reaction heat generated during oxidative decomposition from the upper limit temperature of the catalyst used.
The smaller the output of the upper heater 21 is, the more energy is saved. Therefore, it is necessary to efficiently heat the catalyst body. In order to efficiently transfer heat to the catalyst body by the radiation from the upper heater 21, the suction port body 28 is used. As described above, the configuration including the above is effective.
The heating time for regeneration is calculated as a fixed time by the user executing multiple times until the purification capacity is restored, and the heating cooking operation time since the previous regeneration is accumulated and recorded on 12 electronic circuit boards. Alternatively, the regeneration time may be set according to the operation time, or the regeneration time may be constant, and the sound or the operation panel 6 may be displayed so as to alert the user to catalyst regeneration after a predetermined operation time.

Next, a maintenance operation when the catalyst body 31 is replaced will be described.
Even if the catalyst contamination is removed in the catalyst regeneration mode, the catalyst attached to the catalyst body 31 is used for a long period of time, so that the function as a catalyst gradually decreases and the purification performance also decreases. If the purification performance does not recover even when the catalyst body 31 is deteriorated and regenerated in the catalyst regeneration mode, the catalyst body 31 needs to be replaced.
In recent years, opportunities for replacement of the catalyst body 31 have been increasing in maintenance associated with product lifespan and reuse of electrical products such as heating cookers, and improvement in maintainability has been sought.

By opening / closing / removing the cooking chamber door 7 of the cooking chamber 17, the suction port lower part 27 and the fastening member 30 in the cooking chamber 17 can be accessed from the front of the main body 1, and the suction port lower part is removed by removing the fastening member 30. 27 can be removed and removed from the main unit 1 from the front. Since the suction port lower part 27 and the catalyst body 31 can be integrally removed from the main body 1, the catalyst body 31 can be replaced by replacing the catalyst body 31 outside the main body 1 and attaching the suction port lower part 27. . Without disassembling the main body 1 into the housing 2 and the upper surface 3 of the housing, the catalyst body 31 can be replaced and maintenance can be easily performed.
Further, even when the heating cooker is assembled in a kitchen or the like, access to parts replacement from the front side for taking in and out the object to be heated is maintained, and it is not necessary to remove it even in the assembled state.

In the heating cooker according to the present embodiment having the above-described configuration, when the exhaust in the cooking chamber 17 is sucked into the suction port body 28, steam or oil smoke contained in the exhaust is exhausted by the upper heater 21 in the vicinity thereof. Vaporization is promoted and white smoke seen in the exhaust gas can be reduced. On the other hand, a part of the outer periphery of the upper heater 21 in the vicinity of the suction port body 28 faces the inside of the cooking chamber 17, so that the upper heater The radiation from 21 reaches the object to be heated and can be properly cooked without waste. Therefore, it can be set as the heating cooker which has little discharge | emission of smoke and was excellent also in cooking property.
At the same time, an opening is provided on the back surface of the cooking chamber 17 and the cooking chamber exhaust air passage 10 is disposed, so that the cooking chamber exhaust air passage 10 is not disposed on the upper surface of the cooking chamber 17 and the cooking chamber 17 is disposed above the cooking chamber 17. The induction heating coil unit 11 and the radiant heater 13 can be built in without reducing the indoor height, and cooking of a large-shaped object to be heated and cooking on the upper surface of the main body 1 can be performed in the cooking chamber 17, A cooking device with high cooking performance and high functionality can be obtained.

  Further, by providing the catalyst body 31 in the cooking chamber exhaust air passage 17, the exhaust heat contained in the exhaust and the radiation that contributes less to the cooking of the upper heater 21, that is, inside the suction port body of the upper heater By radiating the outer peripheral portion of the upper heater 21 facing, heating means for heating the catalyst and energy contributing to heating are not required, and contaminants such as smoke and odor components contained in the exhaust gas are purified by oxidative decomposition. From a heel, it can be set as the low-cost and energy-saving heating cooker with the high purity of the exhaust.

  Further, a catalyst body 31 is provided in the cooking chamber exhaust air passage 17, the upper heater 21 is disposed in the range of the cooking chamber exhaust air passage 17 in the height direction, and a part of the radiation from the upper heater 21 is the catalyst body. By providing a space that reaches directly to 31, the catalyst body 31 can efficiently receive the radiation from the upper heater 21, the catalyst temperature can be increased, the catalytic activity can be increased and the purification performance can be improved, The air passage from the suction inlet of the suction inlet body 28 to the cooking chamber exhaust air passage 17 is not bent, and the exhaust can be performed smoothly without increasing the pressure loss. Is not increased, and the cooking device can be a clean and low operating noise.

Further, by providing a reflecting means for increasing the reflectivity from the catalyst body 31 to the inner surface of the suction port body 28 inside the cooking chamber 17, the radiation from the upper heater 21 is reflected and transferred to the catalyst body 31. As the heating efficiency is increased, the catalyst temperature is increased, the purification performance is improved, and the cooking device is excellent in the cleanliness of the exhaust gas with less energy consumption.
In addition, the suction port body upper surface guide 29, which is a part of the wall surface of the cooking chamber 17, constitutes the suction port body 28, so that the number of parts can be reduced, and the cost of parts and assembly can be reduced. In addition, the catalyst body 31 can be replaced from the inside of the cooking chamber 17 by attaching and detaching the suction port body lower part 27, which is a part of the suction port body 28, so that the catalyst body 31 can be replaced. Can be made easier, maintainability is improved, and a long-life cooking device with low maintenance cost can be obtained.

In addition, the suction port body lower part 27 and the catalyst body 31, which are the attachment / detachment part of the suction port body 28, can be integrally attached and detached, so that the replacement work of the catalyst body 31 is further facilitated and the maintenance performance is improved, and the maintenance cost is reduced. The cooking device can have a low long life. Moreover, the upper heating heater 21 and the lower heating heater 23 are provided, and when the cooking operation is started, the upper heating heater 21 is set in the heating operation state, so that the temperature of the catalyst body 31 is increased. The time from the start of cooking to the predetermined temperature can be shortened, and the catalyst activity is increased before the temperature of the object to be heated rises and smoke and odor components are generated. Emissions of smoke and odor can be suppressed, and the cooking device has a high cleanliness with little exhaust odor and excellent exhaust cleanliness.
Further, during the cooking operation, the upper heater 21 is always in the heating operation state, so that when the exhaust passes through the suction port formed by the suction port body 28 and the upper heater 21, Vaporization of oil smoke is promoted and white smoke contained in the exhaust gas can be suppressed, and the catalyst body 31 is constantly heated by radiation from the upper heater 21 to increase the catalyst temperature, and the catalytic activity is enhanced and the purification performance. It is possible to provide a high-cleanness heating cooker that emits less smoke and has excellent exhaust cleanliness.

Further, during the cooking operation, according to the type of catalyst attached to the catalyst body 31, the upper heater 21 can be set to a temperature at which each catalyst has a predetermined purification performance by being in a heating operation state of a predetermined output or more. Therefore, it is possible to provide a heating cooker with high cleanliness that maintains the purification performance of the exhaust, has low smoke emission, and has excellent cleanliness of the exhaust.
Further, the cooking chamber 17 is provided with a temperature sensor 25, and the temperature of the catalyst body 31 is estimated from the temperature of the cooking chamber 17 using the output of the temperature sensor 25, and either the upper heater 21 or the lower heater 23 is used. Or, by controlling both, it is possible to maintain an appropriate catalyst temperature and obtain the required purification performance. Can do.
In addition, since the operation panel 6 and a plurality of cooking menus are provided, the cooking operation is controlled by the cooking menu input or selected by the operation panel 6, and the output of the upper heater is controlled by the cooking menu. For each cooking menu, the catalyst temperature can be controlled according to the required purification capacity according to the timing and amount of smoke and odor components generated during the cooking process (elapsed time), and appropriate purification performance can be maintained. At the same time, it is possible to reduce the waste of electric power due to excessive purification ability, to reduce the smoke emission, to improve the cleanliness of the exhaust, and to provide a cooking device with less energy consumption.

In addition, an operation panel is provided and a catalyst regeneration mode is provided. When the catalyst regeneration mode is selected / instructed, the upper heater 21 is heated for a predetermined time, so that oil adhering to the catalyst body 31 or during decomposition The remaining pollutants are oxidatively decomposed, and the purification capacity reduced by deposits etc. on the catalyst body 31 can be recovered without replacing the catalyst body 31, so that the cleanliness of the exhaust gas can be maintained over a long period of time. It can be set as the heating cooker excellent in maintainability.
In addition, the heating means of the induction heating coil unit 11 and the radiant heater 13 is provided above the cooking chamber 17, and an object to be heated can be placed on the top plate 4 on the upper surface of the main body 1. The cooking range is widened, and a high-function heating cooker can be obtained.

Embodiment 2. FIG.
The second embodiment will be described with reference to FIGS. Since only the portions related to the suction port body 28, the catalyst body 31, and the temperature sensor 25 are different from the first embodiment, only the different portions will be mainly described.
FIG. 10 shows a side sectional view of a heating cooker according to the second embodiment for carrying out the present invention.
In the second embodiment, the internal configuration and shape of the suction port body 28 are different. The catalyst body 31 held by the lower suction port part 27 is composed of two types of catalyst bodies, a first catalyst body 35 and a second catalyst body 36.
Further, the catalyst body 31 is arranged on the inner side of the rear wall surface of the cooking chamber 17, and the shape of the suction port lower part 27 is different from that of the first embodiment.
Thereby, the distance between the inflow surface of the catalyst body 31 and the upper heater 21 is shorter than that of the first embodiment, and the catalyst body 31 is heated more efficiently. Further, by disposing the catalyst body 31 in the cooking chamber 17, at least the left and right sides and the lower periphery of the catalyst body 31 become the atmosphere in the cooking chamber 17, and the cooking chamber exhaust air outside the back of the cooking chamber 17 of the first embodiment. The temperature is higher than the ambient temperature of the passage 10, and the catalyst temperature can be increased. As a result, it is possible to obtain energy saving by a smaller output of the upper heater 21 and high purification performance by high catalyst activity.

Although the shape of the suction port lower part 27 is different from that of the first embodiment, it can be detached and integrated with the catalyst body 35 from the inside of the cooking chamber 17 by opening and removing the cooking chamber door 7 on the front surface of the main body 1. The same as in the first embodiment.
Further, the temperature sensor 25 and the gas sensor 32 are disposed inside the suction port body 28 and attached to the suction port body component 26.
By controlling the output of the upper heater 21 and the lower heater 23 by adjusting the output of the temperature sensor 25 and the gas sensor 32 to increase the purification performance and the cleanliness of the exhaust, including the control in which heating cooking is appropriately performed, It is adjusted by cooking software.
Since the individual controls differ depending on the cooking menu, a typical example is described. However, these controls are not always performed by adjustment with the control in which cooking is properly performed, and appropriate as part of the overall control. The following control is performed at the timing.

In the first embodiment, the temperature of the catalyst body 31 is calculated and estimated from the temperature in the cooking chamber 17 obtained from the output of the temperature sensor 25 in the cooking chamber 17 and the output of the upper heater 21 at that time. However, in the second embodiment, the temperature sensor 25 is arranged in the suction port body 28, and the temperature of the catalyst body 31 is calculated from the detection output of the exhaust gas temperature flowing into the catalyst body 31. The accuracy of the temperature estimation is increased, and the control accuracy of either or both of the upper heating heater 21 and the lower heating heater 23 is improved to obtain a predetermined purification performance from the estimated temperature of the catalyst body. Ability can be gained.
For example, when the temperature is equal to or lower than a predetermined catalyst body 31 temperature at which necessary purification performance is obtained, control for increasing the output of the upper heater 21 is performed, and further, the cooking process (elapsed time) according to the type of cooking menu The catalyst load due to the generation of smoke and odor in the engine is stored, and the upper heater 21 and the lower heater 23 are compared with the estimated value of the temperature of the catalyst body 31 at which the catalyst purification capacity required at each timing is obtained. Even if the output is controlled, stable control with high accuracy is performed, and more stable purification performance can be obtained.

In addition, by arranging the gas sensor 32 in the suction port body 28, the temperature of the catalyst body 31 can be controlled so as to have an appropriate purification performance according to the gas concentration such as oil smoke and odor components generated during the cooking operation, Stable purification can be performed as appropriate purification performance, the exhaust cleanliness can be maintained, and the output of the upper heating heater 21 and the lower heating heater 23 with excessive purification capacity can be suppressed, thereby reducing waste of power. It can be energy saving.

  In the present embodiment, the temperature sensor 25 and the gas sensor 32 are provided on the wall surface of the suction port body upper part 26, but this arrangement is an example and is not limited to this, and is disposed inside the suction port body 28. If it is done, the same effect can be obtained, and it may be arranged on the back or top surface of the cooking chamber 17. Further, if the gas sensor 32 is disposed on the upstream side of the catalyst body 31 other than the suction port body 28, the same effect can be obtained, and the gas sensor 32 may be disposed in the cooking chamber 17 or the cooking chamber exhaust air passage 10.

FIG. 11 is an exploded perspective view of the suction port lower part 27 and the catalyst body 31.
The catalyst body 31 is configured by arranging two separate catalyst bodies, a first catalyst body 35 and a second catalyst body 36, in close proximity.
The first catalyst body 35 and the second catalyst body 36 are inserted side by side from above the suction port lower part 27, and are engaged by the wall surface and the claw portion of the suction port lower part 27. The catalyst body 31 does not come off during the attaching / detaching operation. Further, the claw portion that engages is set to a minimum size that allows engagement, and it is the same as in the first embodiment that the ventilation of the exhaust from the cooking chamber is not hindered.

The main catalyst adhering to the first catalyst body 35 on the cooking chamber side and the second catalyst body 36 on the exhaust port side is different, and the first catalyst body 35 mainly uses a catalyst having a lower activation temperature. The catalyst attached to the second catalyst body 36 has a higher active temperature than the catalyst attached to the first catalyst body 35.
The temperature of exhaust gas after passing through the first catalyst body 35 rises due to reaction heat in which exhaust gas containing organic gas such as oily smoke and odor components is oxidized and decomposed by the first catalyst 35 during the cooking operation. The increased exhaust temperature heat can be used to promote the catalytic activity of the catalyst having a higher activation temperature attached to the second catalyst body 36, and higher purification performance can be obtained. Since the substances with high purification ability differ depending on the type of catalyst, it is possible to purify a wide range of odor components and indoor air pollutants.

As a combination of the catalysts mainly attached to the first catalyst body 35 and the second catalyst body 36, Mn is added to the first catalyst body 35, Pt is added to the second catalyst body 36, and the first catalyst body 35 is used. Mn, Pd in the second catalyst body 36, Pt in the first catalyst body 35, and Pd in the second catalyst body 36 are included. In the present embodiment where there is no heating means dedicated to catalyst heating and the catalyst temperature is low, Mn having the lowest activity temperature is applied to the first catalyst body 35, and then Pt having the lowest activation temperature is applied to the second catalyst body 36. By attaching, high purification ability is obtained in a wide temperature range, and stable exhaust purification is performed during cooking operation.
In the present embodiment, two types of catalyst bodies 31 are used. However, three types of structures may be used, and a third catalyst body may be provided on the exhaust port side. In this case, the first catalyst body 35 may be provided. In addition, a combination of Mn and Pt for the second catalyst body 36 and Pd for the third catalyst body provides a purification capacity for a wider range of substances.

  In the heating cooker according to the second embodiment configured as described above, the catalyst body 31 is arranged on the inner side of the back surface of the cooking chamber 17 so that the distance between the inflow surface of the catalyst body 31 and the upper heater 21 is the embodiment. Thus, the catalyst body 31 is heated more efficiently. Further, by disposing the catalyst body 31 in the cooking chamber 17, at least the left and right and lower surroundings of the catalyst body 31 become a high temperature atmosphere in the cooking chamber 17, the catalyst temperature can be increased, and less upward heating Energy saving by the output of the heater 21 and high catalytic activity can provide a heating cooker with excellent exhaust cleanliness and low energy consumption.

  The catalyst body 31 includes a first catalyst body 35 and a second catalyst body 36. The catalyst bodies 35 and 36 are arranged in close contact with each other and have a low activation temperature of the catalyst mainly attached to the catalyst body 31. Since it is arranged on the cooking chamber side, the exhaust temperature can be raised by the reaction heat of the catalyst of the first catalyst body 35 having a low activation temperature, and even if the output of the upper heater 21 is low, the high activation temperature can be increased. The catalytic activity of the second catalytic body 36 can be obtained, higher purification performance can be obtained, a wide range of odor components and indoor air pollutants can be purified, smoke emission is reduced, exhaust cleanliness is excellent, and energy consumption is low It can be a heating cooker.

  When the combination of the main catalysts contained in the first catalyst body 35 on the cooking chamber side and the second catalyst body 36 on the exhaust port side is Mn and Pt, catalyst activity can be obtained from a lower temperature. The time from the start of cooking to the predetermined purification performance can be shortened. Further, when Mn / Pd is used, the product cost can be reduced and a high catalytic activity can be obtained for the methane component. Further, when Pt · Pd is used, a high purification capacity can be obtained under the condition that the exhaust gas temperature is high in the heating cooker in which the output of the upper heater 21 is high. By selecting according to the kind of heating cooker, it can be set as the heating cooker which has few discharge | emissions of smoke and is excellent in the purity of exhaust gas.

The suction port body 28 is provided with a temperature sensor 25, and the output of the temperature sensor 25 is used to control the output of the upper heater 21, whereby the catalytic activity of the catalyst body 31 is detected from the detection output of the exhaust temperature flowing into the catalyst body 31. By calculating the purification performance according to, the estimation accuracy of the purification performance is increased, the control accuracy of the upper heating heater 21 or the lower heating heater 23 for obtaining the predetermined purification performance is improved, and appropriate purification performance can be maintained. It can be set as the heating cooker with the cleanliness | purity of the exhaust gas stabilized.
Further, a gas sensor 32 is provided in the suction port body 28, and the output of the gas sensor 32 is used to control one or both of the upper heater 21 and the lower heater 23 to be generated during the cooking operation. Since the temperature of the catalyst body 31 can be controlled to achieve an appropriate purification performance so as to obtain an appropriate purification performance according to the gas concentration of oily smoke or odor components, stable purification performance is obtained and excessive purification is achieved. The output of the upper heater 21 and the lower heater 23 can be suppressed so as not to become a capacity, waste of electric power is reduced, the exhaust gas is clean, and the cooking device can consume less energy. .

Embodiment 3 FIG.
The third embodiment will be described with reference to FIGS. Since only the portion related to the member around the cooling air exhaust air passage 14 and the cooling air exhaust air passage connection port 20 is different from the first embodiment, only the different portions will be mainly described.
FIG. 12 is a perspective view of the main body 1 in a state where the casing upper surface 3, the top plate 4, the intake / exhaust port cover 5, the radiant heater 13, and the induction heating coil unit 11 on the right side of the front surface of the cooking device are removed.
The opening of the cooling air exhaust air passage connection port 20 is provided behind the cooking chamber storage portion 19 as in the first embodiment, but the shape of the opening is different and the width direction is the same as the width of the cooking air exhaust air passage 10 It has a narrow dimension, and the opening is widened to the front side.
In addition, the shape of the vertical portion including the exhaust port portion of the cooking chamber exhaust air passage 10 is different, and the cooling air can be passed through the front side of the cooling air exhaust air passage 14 and the front side of the vertical portion of the cooking chamber exhaust air passage 10. A void is formed.

FIG. 13 is a perspective view of the cooking chamber 17 with the top surface and the cooking chamber door 7 removed.
Part of the horizontal portion from the vertical portion of the cooking chamber exhaust air passage 10 is configured as a separate part as the exhaust port front part 37 and is fixed to the cooking chamber exhaust air passage 10 by the second fastening member 38.

FIG. 14 is an exploded perspective view of the cooking chamber 17 with the top surface and the cooking chamber door 7 removed. The configuration, operation, and effects of the suction port body 28 in the cooking chamber 17 are the same as those in the first embodiment, and the first catalyst body 35 is held in the suction port body lower part 27.
The exhaust port front part 37 is detachable from the cooking chamber exhaust air passage 10 by removing the second fastening member 38, holds the second catalyst body, and is detachable integrally.
The fastening member 30 is detachable for operation from the fastening axial direction, but the second fastening member 36 is detachable by operation from the circumferential direction of the fastening shaft, and is operated from the gap with the cooling wind exhaust air passage 14. But it is removable.

The exhaust port front part 37 is attached from the inner surface side of the cooking chamber exhaust air passage 10, and the thickness of the second catalyst body is made thinner than the vertical dimension of the vertical portion of the cooking chamber exhaust air passage 10, thereby cooking. It can be detached from the exhaust port of the cooking chamber exhaust air passage 10 by moving it to the inner surface side of the vertical portion of the chamber exhaust air passage 10 and pulling it upward.
With these configurations, even when the heating cooker body 1 is assembled in a kitchen or the like, the exhaust port front part 37 can be removed from the casing exhaust port 9 by removing the exhaust port cover 5, so that the second fastening member 38 is removed. The second catalyst body that is detachable from the main body 1 and is integrally attached and detached can be replaced without disassembling the main body 1 into the housing 2 and the housing upper surface 3 or the like. Similar to the first embodiment, the first catalyst body can be replaced without being disassembled even when the main body 1 is attached to the kitchen.

FIG. 15 is an exploded perspective view of the exhaust port front part 37 and the second catalyst body 36.
The second catalyst body 36 is inserted from the front with the main body 1 of the exhaust port front part 37 attached, and is accommodated in the holding part without being caught by the claw part on the front side due to elastic deformation of the holding part of the exhaust port front part 37. . After the storage, they are engaged by the wall surface and the claw portion of the exhaust port front part 37, and the second catalyst body 36 does not come off during the detachment work from the main body 1. Further, the engaging claw portion has a minimum size capable of engaging, and does not hinder the ventilation of the exhaust from the cooking chamber 17.

FIG. 16 is a side sectional view of the cooking chamber exhaust air passage 10 portion of the main body 1.
A first catalyst body 35 is disposed on the cooking chamber exhaust air passage 10 on the cooking chamber 17 side, and a second catalyst body 36 is disposed on the exhaust port side close to the rear surface. A space is provided between the first catalyst body and the second catalyst body, and a temperature sensor 25 in front of the second catalyst body is disposed.
A cooling air exhaust air passage connection port 20 is provided above the cooking chamber exhaust air passage 10, and an end on the front side of the opening is substantially above the outflow surface (back side) of the first catalyst body 35. It has become.
The main catalyst attached to the first catalyst body 35 on the cooking chamber side and the second catalyst body 36 on the exhaust port side are different, and the first catalyst body 35 mainly has a catalyst having a higher activation temperature. The catalyst attached to the second catalyst body 36 has a lower activation temperature than the catalyst attached to the first catalyst body 35.
In a cooking device having a high cooking capacity and a high output of either or both of the upper heater 21 and the lower heater 23, the exhaust gas flowing into the suction port body 28 may be at a high temperature.
Depending on the type of the catalyst, there is an upper limit temperature for use, and if the temperature is higher than the upper limit temperature, the catalyst performance is deteriorated quickly and the life is shortened. A catalyst having a low catalyst activity temperature also tends to have a low use upper limit temperature, and must be in a use state that does not exceed the use upper limit temperature.

  In the present embodiment, the hot exhaust gas that has flowed into the suction port body 28 is purified by the first catalyst body 35, and then passes through the cooking chamber exhaust air passage 10 and flows into the second catalyst body 36. . Since the exhaust gas is hotter than the ambient temperature of the cooking chamber exhaust air passage 10, the heat is dissipated from the wall surface of the cooking chamber exhaust air passage 10 while passing between the first catalyst body 35 and the second catalyst body 36, and the The exhaust gas is cooled and flows into the second catalyst body 36 at a temperature lower than the temperature obtained by subtracting the increase due to the reaction heat from the upper limit use temperature of the catalyst attached to the second catalyst body. It can be used without changing the life of 36 without shortening the service life.

Further, in the first embodiment, the front-side end of the opening of the cooling air exhaust air passage connection port 20 is closer to the back side than the outflow surface (back side) of the first catalyst body 35, and the first catalyst body. 35, the cooling air is in contact with the periphery of the first catalyst body 35 to prevent the catalyst temperature from lowering and the purification performance from being lowered, but in the present embodiment, the front side of the opening The end portion of the first catalyst body 35 is almost the upper part of the outflow surface (back side) of the first catalyst body 35, and the contact area to the outer periphery of the cooking chamber exhaust air passage 10 between the first catalyst body 35 and the second catalyst body 36 is Increasing the cooling efficiency.
Further, in the first embodiment, the width of the opening is wider than the width of the cooking chamber exhaust air passage 10, and the cooling air smoothly flows into the cooling air exhaust air passage 14. In the form, the size of the cooling chamber exhaust air passage 10 is equal to or narrower than the width of the cooking chamber exhaust air passage 10. Yes.

In addition, a gap through which the cooling air can flow is formed on the front surface side of the cooling air exhaust air passage 14 and the front surface side of the vertical portion of the cooking chamber exhaust air passage 10, so that the front surface side of the upper surface of the cooking chamber exhaust air passage 10 is formed. The flow of the cooling air toward the vertical portion of the cooling exhaust air passage 14 is formed, and the cooling efficiency of the upper surface where the temperature becomes particularly high due to the up drift in the cooking chamber exhaust air passage 10 is enhanced. By cooling the cooking chamber exhaust air passage 10 with these cooling air, even if the interval between the first catalyst body 35 and the second catalyst body is shortened, the operating temperature of the catalyst attached to the second catalyst body is not more than the upper limit temperature of use. The exhaust can be cooled, the cooking chamber exhaust air passage can be shortened, the space efficiency can be increased, the parts can be miniaturized and the cost can be reduced.
If the distance between the catalyst bodies is the same, higher output upper heater 21 and lower heater 23 can be used, and higher cooking capacity can be achieved. The amount can be increased.

As a combination of catalysts mainly added to the first catalyst body 35 and the second catalyst body 36, Pt is added to the first catalyst body 35, Mn is added to the second catalyst body 36, and the first catalyst body 35 is used. In addition, Pd and the second catalyst body 36 include Mn.
The first catalyst body 35 on the cooking chamber side has a relatively high Pd output when the output is high and the temperature is high due to the inflow temperature to the first catalyst body 35 due to the outputs of the upper heater 21 and the lower heater 23. When the temperature is low and the temperature is low, Pt is added. The upper limit temperature for use of Pd and Pt is as high as about 550 ° C., and there is almost no problem in purifying exhaust from cooking.
By using low-cost Mn for the second catalyst body 36, the catalyst cost can be lowered, and high catalytic activity can be obtained even at the temperature after cooling, and sufficient purification performance can be obtained.
By combining the first catalyst body 35 and the second catalyst body 36, the purification performance is improved, but by combining a plurality of different catalysts, a wide range of odor components and indoor air pollutants can be purified. . In addition, the load on the second catalyst body 36 is reduced and reduced by flowing into the second catalyst body 36 in a state where some odor components and indoor air pollutants are purified by the first catalyst body 35. The temperature rise of the catalyst due to the reaction heat can be kept low, and the inflow temperature can be increased accordingly, and the amount of cooling of the exhaust can be reduced.

The arrangement and interval of the first catalyst body 35 and the second catalyst body 36 of the present embodiment are merely examples, and the present invention is not limited to this, and the exhaust gas is exhausted to a temperature at which the life of the catalyst of the second catalyst body 36 does not decrease. The same effect can be obtained if the arrangement and interval can be cooled.
Further, by providing a stirring plate between the first catalyst body 35 and the second catalyst body 36, the temperature unevenness of the exhaust gas flowing into the second catalyst body 36 is reduced, and the exhaust gas becomes a high temperature region (wind It is possible to further shorten the distance between the first catalyst body 35 and the second catalyst body 36 required for cooling to a temperature at which the catalyst life in the upper path) does not decrease.
Further, although the first catalyst body 35 is disposed outside the back surface of the cooking chamber 17, if it is disposed inside the cooking chamber 17 as in the second embodiment, the purification performance can be further improved.

A temperature sensor 25 and a smoke sensor 39 are disposed in the suction port body 28. Regarding the temperature sensor 25 in the suction port body 28, the configuration, operation, and effect of the second embodiment are the same. The smoke sensor 39 in the suction port body 28 can obtain almost the same operation and effect as the gas sensor 32 of the second embodiment, but the gas sensor 32 is effective for detecting odor components in the exhaust because it detects the gas components contained in the exhaust. On the other hand, the smoke sensor 39 detects the particulate component of the exhaust gas based on turbidity (transmittance) and the like, and is effective in detecting smoke that can be visually confirmed such as white smoke. Which sensor is provided may be selected depending on the characteristics of the cooking device and the state of use, and both may be provided.
The temperature sensor 25 in the cooking chamber exhaust air passage 10 detects the exhaust temperature flowing into the second catalyst body 36, calculates the catalyst temperature from the output, and maintains an appropriate purification capacity, while the catalyst temperature is One or both of the upper heater 21 and the lower heater 23 are controlled so as not to exceed the use upper limit temperature. These controls include the output of the other temperature sensor 25 and smoke sensor 39, the purification performance of the first catalyst body 35, and the control of heating cooking in the cooking chamber 17, while maintaining the cleanliness of the exhaust gas. It is a part of the total control that is performed. Similarly, in the catalyst regeneration mode instructed from the operation panel 6, the output of the temperature sensor 25 is similarly controlled so that the catalyst temperature does not exceed the use upper limit temperature.

  In the cooking device of the present embodiment configured as described above, the first catalyst body 35 and the second catalyst body 36 are provided, a space is provided between the catalyst bodies, and a catalyst having a low activation temperature is provided. By arranging the second catalyst body 36, which is mainly included, on the exhaust port side, heat is radiated before the exhaust flows into the second catalyst body, and it can be used below the upper limit temperature of the catalyst of the second catalyst body. In addition to extending the life of the catalyst and reducing the frequency of replacement of the second catalyst body, it is possible to use the upper heater 21 and the lower heater 23, which have a large output, and cooking with low maintenance costs and high cooking performance. Can be a container.

By adding Pt or Pd as a catalyst of the first catalyst body 35 on the cooking chamber 17 side and Mn as a catalyst on the second catalyst body 36 on the exhaust port side, high purification performance is achieved at a low catalyst cost. The cooking device can be a low-cost and high-purity exhaust gas.
In addition, the cooling fan 18 is provided so that the cooling air comes into contact with the outer periphery of the cooking chamber exhaust air passage 10 between the first catalyst body 35 and the second catalyst body 36, thereby increasing the cooling efficiency. High-performance cooking device with low product cost, which can shorten the distance between the catalyst body 35 and the second catalyst body, increase the efficiency of space, reduce the component cost, and increase the cooking capacity. It can be.
In addition, since the exhaust port front part 37 which is a part of the cooking chamber exhaust air passage 10 is attached and detached, the second catalyst body 36 can be attached and detached from the inside of the exhaust port, so that the catalyst body 36 can be easily replaced. And maintainability is improved, and it can be a long-life cooking device with low maintenance cost.

In addition, since the exhaust port front part 37, which is the attachment / detachment part of the cooking chamber exhaust air passage 10, and the second catalyst body 36 can be integrally attached and detached, the replacement work of the second catalyst body 36 is further facilitated and maintained. Therefore, it is possible to provide a long-life cooking device with low maintenance cost.
By making the thickness of the second catalyst body 36 smaller than the depth direction dimension of the vertical portion of the cooking chamber exhaust air passage 10, it is easy to attach and detach from the cooking chamber exhaust air passage 10, and maintenance is improved, and maintenance is performed. A low-cost long-life cooking device can be obtained.

A temperature sensor 25 is provided in front of the second catalyst body 36 in the cooking chamber exhaust air passage 10, and the output of the temperature sensor 25 is used to control the output of either or both of the upper heater and the lower heater. The catalyst temperature of the second catalyst body 36 can be calculated to maintain an appropriate purification capacity and prevent the catalyst temperature from exceeding the upper limit temperature for use. Can be a low heating cooker.
Since the smoke sensor 39 is provided in the suction port body 28 and the output of one or both of the upper heater 21 and the lower heater 23 is controlled, appropriate purification according to the concentration of smoke generated during cooking operation Since the temperature of the catalyst body 31 can be controlled so as to achieve an appropriate purification performance, a stable purification performance can be obtained, and the upper heater 21 and the lower heater 23 can be prevented from having an excessive purification capacity. It is possible to provide a heating cooker that can suppress the output, reduce the waste of electric power, have a stable exhaust cleanliness, and consume less energy.

Embodiment 4 FIG.
A fourth embodiment will be described with reference to FIGS. The portion related to the periphery of the cooking chamber exhaust air passage 10 is different from that of the third embodiment, and this different portion is mainly described.
FIG. 17 is a perspective view of the main body 1 in a state in which the housing upper surface 3, the top plate 4, the intake / exhaust port cover 5, the radiant heater 13, and the induction heating coil unit 11 on the right side of the front surface are removed.
An opening of the cooling air exhaust air passage connection port 20 is provided behind the cooking chamber storage portion 19 as in the third embodiment, and the shape of the opening is also the same. Suction ports for the drive gas air passage 40 are provided on both sides below the opening.

FIG. 18 is a perspective view of the cooking chamber 17 with the top surface and the cooking chamber door 7 removed.
The suction port of the driving gas air passage 40 is provided on both sides of the upper surface of the horizontal portion of the cooking chamber exhaust air passage 10, and the driving gas air passage 40 is disposed below the side surface of the cooking chamber exhaust air passage 10.
FIG. 19 is a perspective view of the cooking chamber exhaust air passage 7 combined with the driving gas air passage 40.
By combining the driving gas air passage 40 with the cooking chamber exhaust air passage 7, a substantially sealed air passage extending from the suction port of the driving gas air passage 40 to the driving gas inlet 34 of the cooking chamber exhaust air passage 7 is formed. .
A part of the cooling air is sucked into the both sides of the upper surface of the horizontal portion of the cooking chamber exhaust air passage 10 from the suction port of the driving gas air passage 40 while being in contact with the upper surface of the horizontal portion of the cooking chamber exhaust air passage 10 and cooled. After passing through the air passage formed by the both sides of the horizontal portion of the cooking chamber exhaust air passage 10 while contacting and cooling both sides, the air formed by the bottom surface of the horizontal portion of the cooking chamber exhaust air passage 10 The inside of the passage is sucked and sent to the driving gas blower 41 while contacting and cooling the bottom surface of the horizontal portion of the cooking chamber exhaust air passage 10 and cooked from the driving gas inlet 34 provided on the bottom surface of the cooking chamber exhaust air passage 10. It flows into the vertical part of the room exhaust air passage 10 and is exhausted from the upper exhaust port.

FIG. 20 is a front sectional view of the drive gas air passage 40 portion of the main body 1.
A driving gas blower 41 is disposed below the driving gas air passage 40. In the present embodiment, the driving gas blower 41 is arranged in such a manner that two axial flow blowers are arranged. However, this is only an example as long as a necessary blowing ability is obtained, and the centrifugal blower is not limited to this. The number and the number may be one or more.
FIG. 21 shows a side sectional view of the cooking chamber exhaust air passage 10 portion of the main body 1.
The air path formed on the side and lower side of the driving gas air passage 40 and the cooking chamber exhaust air passage 10 is disposed behind the first catalyst body 35, and the driving gas is disposed on the upper surface, side surface, and side of the cooking chamber exhaust air passage 10. The exhaust in the cooking chamber exhaust air passage 10 is cooled in contact with the bottom surface, but the first catalyst body 35 is not cooled.

The cooking device having the above configuration includes a driving gas blower 41, and is sucked into the driving air flow blower 41 on the outer periphery between the first catalyst body 35 and the second catalyst body 36 of the cooking chamber exhaust air passage 10. Compared with the case where cooling is performed by the flow / contact of the cooling air as in the third embodiment by contacting the driving gas to be sent and the driving gas flowing into the driving gas inlet 34 of the cooking chamber exhaust air passage 10, The outer peripheral surface of the upper surface, both side surfaces, and the bottom surface can be cooled at a faster flow rate by the air blowing capacity of the driving gas blower.
As a result, the cooling efficiency is increased, and even if the interval between the first catalyst body 35 and the second catalyst body is further shortened, the inflow temperature to the second catalyst body 36 is cooled to a temperature that does not shorten the life of the attached catalyst. It is possible to improve the space efficiency, reduce the cost of parts, and use a high-power heating means for the upper heater 21 and the lower heater 23, so that high cooking ability can be achieved. Furthermore, the flow rate of the drive gas from the drive gas inlet 34 can be increased by the blowing capacity of the drive gas blower 41, and the attraction by the higher ejector is performed, the suction capacity from the cooking chamber 17 is increased, and the cooling air is supplied. The contact area is large and the contact area is large and fine (the number of cells per unit inflow area is large and the mesh is fine) can be used for the first catalyst body 35 and the second catalyst body 36. Since the purification capacity of the catalyst body can be increased, it is possible to provide a heating cooker with high functionality and high exhaust cleanliness.

Embodiment 5 FIG.
The fifth embodiment will be described with reference to FIGS. Since only the portions related to the cooking chamber exhaust air passage 10 and the upper heater 21 are different from the third embodiment, these different portions are mainly described.
FIG. 22 is a perspective view of the main body 1 in a state in which the housing upper surface 3, the top plate 4, the intake / exhaust port cover 5, the radiant heater 13, and the induction heating coil unit 11 on the right side of the front surface are removed.
An opening of the cooling air exhaust air passage connection port 20 is provided behind the cooking chamber storage portion 19 as in the third embodiment, and the shape of the opening is also the same. A cooling air inlet 42 is provided on the upper surface of the horizontal portion of the cooking chamber exhaust air passage 7 below the opening.

FIG. 23 is a perspective view of the cooking chamber 17 with the top surface and the cooking chamber door 7 removed.
On the cooking chamber 17 side of the cooling air inlet 42 on the upper surface of the horizontal portion of the cooking chamber exhaust air passage 10, an exhaust air passage upper surface component 43 is provided and is detachably fixed to the cooking chamber exhaust air passage 10 by a fastening member 30. Yes. The exhaust port front part 37 is detachably fixed to the vertical portion of the cooking chamber exhaust air passage 10 by the second fastening member, as in the third embodiment.
The shapes of the suction port body 28 and the upper heater 21 are different from those of the third embodiment, but the operations and effects are the same.
The suction port body 28 is formed integrally with the back surface of the cooking chamber 7, and has a shape with few irregularities and excellent cleaning properties. Further, since it is integrated with the rear part, no separate part is required to form the suction port body 28, so that the part cost and assembly cost are not required, and the product cost can be reduced.

  Compared with Embodiment 3, the upper heater 21 has a suction port body 28 and a portion that forms the suction port are arranged on the back side, but cooking by the balance of the shape and arrangement of the entire upper heater 21 The finish is almost the same as in Embodiment 3, and there is no major obstacle to cooking. As in the third embodiment, the region of the radiation of the upper heater 21 that has a low contribution to cooking is heated by the catalyst, and the region that has a high contribution to cooking is the object to be heated in the same manner as in the case without the suction port 28. Because it arrives, almost the same cooking finish is obtained.

FIG. 24 is an exploded perspective view of the cooking chamber 17 with the top surface and the cooking chamber door 7 removed.
An opening portion of the suction port body 28 is formed on the back surface of the cooking chamber 17, and the position and shape dimensions are such that the upper heater 21 and the suction port can be formed. The configuration, operation, and effect of the suction port body 28 in the cooking chamber 17 are the same as those in the first embodiment, and the first catalyst body 35 is held in the suction port body lower part 27.
The upper part 43 of the exhaust air channel disposed between the rear surface of the cooking chamber 17 and the cooling air inlet 42 on the upper surface of the horizontal portion of the cooking chamber exhaust air channel 10 is held by removing the second fastening member 38. It is detachable upward from the cooking chamber exhaust air passage 10 integrally with the one catalyst body 35, and can be taken out and attached even in the work from the cooling air exhaust air passage connection port 20. The first catalyst body 35 can be easily replaced without disassembling the main body 1 so as to be removed.
The exhaust port front part 37 is removable from the housing exhaust port 9 even when the main body 1 is assembled in a kitchen or the like, and the second catalyst body 36 can be easily replaced as in the third embodiment.

FIG. 25 is an exploded perspective view of the exhaust air channel upper surface part 43 and the first catalyst body 35.
The first catalyst body 35 is inserted from the front with the exhaust air passage upper surface part 43 attached to the main body 1 and is stored in the holding portion without being caught by the front claw due to elastic deformation of the holding portion of the exhaust air passage upper surface part 43. Is done. After the storage, the exhaust air passage upper surface part 43 is engaged with the wall surface and the claw portion, and the first catalyst body 35 does not come off during the detachment work from the main body 1. Further, the engaging claw portion has a minimum size capable of engaging, and does not hinder the ventilation of the exhaust from the cooking chamber 17.

FIG. 26 is a side sectional view of the cooking chamber exhaust air passage 10 portion of the main body 1.
The cooling air inlet 42 is provided not only on the upper surface between the first catalyst body 35 and the second catalyst body 36 in the horizontal portion of the cooking chamber exhaust air passage 10, but also on the lower surface.
The function of the ejector by the cooling air flowing into the vertical part of the cooking chamber exhaust air passage 10 from the driving gas inflow port 34 is that the cooling air is pushed into the housing 2 from the cooling fan 18 and the internal pressure is high. By the suction by the cooling air, the cooling air does not flow into the cooking chamber exhaust air passage 10 from the cooling air inlet 42, and the exhaust does not leak into the housing 2. The cooling air flowing in from the cooling air inlet 42 has an opening directed toward the exhaust port and a substantially horizontal air guide section so that the cooling air flows in the same direction as the flow in the cooking chamber exhaust air passage 10. The flow in the air passage 10 is not obstructed.

When the cooling air flows into the cooking chamber exhaust air passage 10 from the cooling air inlet 42, it mixes with the exhaust gas and the exhaust gas temperature decreases, so that the exhaust gas temperature flowing into the second catalyst body 36 is equally lowered compared to the third embodiment. However, the distance from the first catalyst body 35 can be shortened, the cooking chamber exhaust air passage 10 can be made smaller, the parts cost can be reduced, and the upper heater 21 and the lower heater 23 have high output. A heating means can be used and it can be set as the high cooking performance.
The arrangement position, the number, and the size of the cooling air inlet 42 in the present embodiment are merely examples, and are not limited thereto. The cooling air inlet 42 is arranged between the first catalyst body 35 and the second catalyst body 36, and is not limited to this. The arrangement position, the number, and the size may be appropriately determined so that the exhaust gas temperature flowing into the catalyst body 36 can be adjusted to a predetermined temperature, and may be arranged on the side surface or only on the lower surface. In addition, a guide for stirring may be provided in the cooking chamber exhaust air passage 10 in order to promote mixing of cooling air and reduce temperature unevenness of the exhaust temperature flowing into the second catalyst body 36.

The operation and effect of the opening of the suction port body 28, the upper heater 21, and the first catalyst body 35 are substantially the same as those in the third embodiment. A slit-like suction port is formed at the outer periphery of the opening of the suction port body 28 and the vertical section of the upper heater 21 in the longitudinal direction, and operations and effects similar to those of the third embodiment are obtained. Further, the operation and effect obtained by arranging the upper heater 21 so as to overlap the range of the first catalyst body 35 in the height direction can also be obtained as in the third embodiment.
A temperature sensor 25 and a gas sensor 32 are arranged on the cooking chamber 17 side of the first catalyst body 35 in the cooking chamber exhaust air passage 10, and the windward side of the first catalyst body 35 is the same as in the second and third embodiments. The same operation and effect can be obtained. Further, the temperature sensor 25 is also arranged in front of the second catalyst body 36, and the same operation and effect as in the third embodiment can be obtained.

In the heating cooker of the present embodiment having the above-described configuration, the rear wall surface of the cooking chamber 17 is the suction port body 28, so that the number of components can be reduced, and the component cost and assembly cost can be reduced. The cleanability of the inner wall surface of 17 can be improved, and a heating cooker that is inexpensive and excellent in cleanability can be obtained.
In addition, since the exhaust air passage upper surface part 37 that is the attachment / detachment portion of the cooking chamber exhaust air passage 10 and the first catalyst body 35 can be integrally attached and detached, the replacement work of the first catalyst body 35 is further facilitated. High maintainability and long-life cooking device with low maintenance cost

  A cooling fan 18 is provided, and a cooling air inlet 42 through which the cooling air flows is provided on the outer periphery between the first catalyst body 35 and the second catalyst body 36 of the cooking chamber exhaust air passage 10, thereby exhausting the cooling air. And lowering the exhaust temperature to enable the use of a catalyst with a lower upper limit temperature of use, prolong the catalyst life and reduce the replacement frequency, and from the first catalyst body 35 to the second catalyst body 6 The interval can be shortened, the functionality can be reduced by reducing the cost of parts by improving the space efficiency, and high cooking power is obtained with a heating means with high output, and the product and maintenance costs are low, and the exhaust gas is clean and highly functional. It can be set as a high heating cooker.

  The present invention can be used for commercial and household cooking devices.

1 body, 2 housing, 3 housing top surface, 4 top plate, 5 intake / exhaust port cover,
6 operation section, 7 cooking chamber door, 8 housing intake, 9 housing exhaust,
10 cooking chamber exhaust air path, 11 induction heating coil unit, 12 electronic circuit board,
13 Radiant heater, 14 Cooling air exhaust air passage, 15 Substrate case unit,
16 chambers, 17 cooking rooms, 18 cooling fans, 19 cooking room storage,
20 Cooling air exhaust air passage connection port, 21 Upper heater, 22 Cooking table,
23 downward heater, 24 saucer, 25 temperature sensor, 26 parts on suction port body,
27 Lower suction port part, 28 Suction port body, 29 Suction port upper surface guide,
30 fastening member, 31 catalyst body, 32 gas sensor, 33 guide surface,
34 drive gas inlet, 35 first catalyst body, 36 second catalyst body,
37 exhaust port front part, 38 second fastening member, 39 smoke sensor,
40 driving gas air passage, 41 driving gas blower, 42 cooling air inlet,
43 Exhaust air channel top surface parts

Claims (27)

A cooking device having a cooking chamber for storing an object to be heated,
A rod-shaped heater disposed at least above the cooking chamber;
An exhaust air passage for exhausting the exhaust from the cooking chamber to the outside of the heating cooker via an exhaust port;
A suction port that sucks the exhaust from the cooking chamber, and a suction port that guides the sucked exhaust to the exhaust air path;
A portion of the heater is disposed in the vicinity of the suction port of the suction port body,
In the same cross section perpendicular to the axial direction of the portion of the heater, the cooking device is characterized in that one end of the outer peripheral surface of the heater faces the inside of the cooking chamber and the other end faces the inside of the suction port.   The cooking device according to claim 1, wherein a catalyst body is provided in the exhaust air passage or in the suction port.   3. The heater according to claim 2, wherein at least a part of the heater is disposed so as to overlap with a range in the height direction of the exhaust air passage, and at least a part of the radiation from the heater directly reaches the catalyst body. Cooker   The cooking device according to claim 2 or 3, wherein a reflecting means is provided on at least a part of the inner surface of the suction port body closer to the cooking chamber than the catalyst body or the inner surface of the exhaust air passage.   The cooking device according to any one of claims 2 to 4, wherein at least a part of the catalyst body is disposed closer to the cooking chamber than the cooking chamber wall surface.   The cooking device according to any one of claims 2 to 5, wherein at least a part of the cooking chamber wall surface or the top surface constitutes a part or the whole of the suction port body.   The cooking device according to any one of claims 2 to 6, wherein the catalyst body is detachable from the inside of the cooking chamber by detaching or moving at least a part of the suction port body.   The cooking device according to any one of claims 2 to 7, wherein the catalyst body can be attached and detached from an exhaust port of the exhaust air passage when a part of the exhaust air passage is attached or detached or movable.   The cooking device according to claim 7 or 8, wherein the part of the suction port body or the exhaust air passage that is attached or detached or movable and the catalyst body are integrally attached or detached or movable.   The cooking device according to claim 8 or 9, wherein the thickness of the catalyst body is thinner than the depth direction dimension of the exhaust port of the exhaust air passage.   A plurality of catalyst bodies having different activation temperatures were provided, the catalyst bodies were arranged in close proximity, and the catalyst bodies were arranged in order so that the activation temperature increased from low to high from the cooking chamber side toward the exhaust port. The cooking device according to any one of claims 2 to 10, characterized by the following.   When two catalyst bodies are provided, the catalyst body on the cooking chamber side mainly contains Mn and the catalyst body on the exhaust port side mainly contains Pt, or the catalyst body on the cooking chamber side contains Mn and the catalyst body on the exhaust port side The cooking device according to claim 11, wherein Pd is mainly contained, or the catalyst body on the cooking chamber side mainly contains Pt, and the catalyst body on the exhaust port side mainly contains Pd.   12. When three catalyst bodies are provided, the first catalyst body mainly contains Mn, the next catalyst body mainly contains Pd, and the last catalyst body mainly contains Pd from the cooking chamber side toward the exhaust port. Cooking device.   A plurality of catalyst bodies having different activation temperatures are provided, a space is provided between the plurality of catalyst bodies, and the catalyst bodies are arranged in order so that the activation temperature decreases from high to low from the cooking chamber side toward the exhaust port. The cooking device according to any one of claims 2 to 10, characterized in that.   When two catalyst bodies are provided, the catalyst body on the exhaust chamber side mainly contains Mn and the catalyst body on the cooking chamber side mainly contains Pt, or the catalyst body on the exhaust port side contains Mn and the catalyst body on the cooking chamber side. 15. The heating cooker according to claim 14, characterized in that mainly contains Pd, or the catalyst body on the exhaust side mainly contains Pt, and the catalyst body on the cooking chamber side mainly contains Pd.   The cooking device according to claim 14 or 15, further comprising a cooling fan that generates cooling air to be brought into contact with an outer periphery of a space between at least a plurality of catalyst bodies in the exhaust air passage.   The cooking device according to claim 14 or 15, further comprising a cooling fan that allows cooling air to flow into the outer periphery of a space between a plurality of catalyst bodies in the exhaust air passage through an opening.   A drive gas blower is provided, and at least one or both of the air sucked and sent to the drive gas blower is in contact with the outer periphery of the space between the plurality of catalyst bodies in the exhaust air passage, and the sent air is exhausted The cooking device according to any one of claims 14 to 17, wherein the cooking device flows into a path. The heater is provided in the lower part in addition to the upper part of the cooking chamber,
The cooking device according to any one of claims 1 to 18, wherein at the start of the cooking operation, at least the upper heater is in a heating operation state.   The cooking device according to any one of claims 1 to 19, wherein at least the upper heater is always in a heating operation state during a cooking operation.   The cooking device according to any one of claims 1 to 20, wherein during the cooking operation, the upper heater is in a heating operation state of a predetermined output or more according to the type of catalyst contained in the catalyst body. . The cooking room has a temperature sensor,
The cooking device according to any one of claims 1 to 21, wherein the output of the heater is controlled based on the output of the temperature sensor. A temperature sensor is provided in the exhaust air passage or suction port body.
The cooking device according to any one of claims 1 to 22, wherein the output of the heater is controlled based on the output of the temperature sensor. A gas sensor or smoke sensor is provided in at least one of the cooking chamber, the exhaust air passage, and the suction port,
The cooking device according to any one of claims 1 to 23, wherein the output of the heater is controlled based on the output of the gas sensor or the smoke sensor. It has an operation panel and a plurality of cooking menus.
The cooking operation is controlled by a cooking menu input or selected by an operation panel, and the output of the heater above the cooking chamber is controlled by the cooking menu. Cooker. Equipped with an operation panel and a catalyst regeneration mode,
The cooking device according to any one of claims 1 to 25, wherein when the catalyst regeneration mode is selected by the operation panel, a heater at least above the cooking chamber operates for a predetermined time. A heating means is provided above the cooking chamber, and a top plate is provided above the heating means.
27. The cooking device according to claim 1, wherein an object to be heated is placed on the top surface of the top plate directly above the heating means.

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