JP2009216305A - Cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve smoke eliminating performance of a catalyst by determining a height of the catalyst from a ceiling surface of a cooking chamber to the neighborhood of a grill and widening a projection area of an oily smoke passing face of the catalyst without restricted by a depth of a product. <P>SOLUTION: A rear face of the catalyst 38 is disposed roughly in parallel with a rear face of the cooking chamber at a front part with respect to a front wall surface of an exhaust cylinder, a rear section of a heater 32 is bent roughly into the L-shape while facing the catalyst to form an inside heating face 43 and a catalyst heating face 44, and the catalyst heating face is positioned at a windward side of the catalyst. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heating cooker provided with a cooking chamber for cooking an object to be cooked such as fish, which is used in general households.

  Conventionally, this type of heating cooker blocks a second exhaust path that also guides oil smoke to the outside, next to the first exhaust path for discharging the oil smoke generated in the cooking chamber to the outside. The first exhaust path and the second exhaust path are joined on the upstream side, and a temperature detecting means for detecting the temperature of the exhaust is provided in the second exhaust path.

  Some of the cooking heaters in the cooking chamber are provided with the rear portion of the cooking heater extended to a position immediately below the catalyst provided in the exhaust path (see, for example, Patent Document 1).

  FIG. 6 shows a conventional cooking device described in Patent Document 1. As shown in FIG.

  As shown in FIG. 6, a second exhaust path 9 (not shown) for guiding the oil smoke to the outside is also provided next to the first exhaust path 6 for discharging the oil smoke during cooking generated in the cooking chamber 2 to the outside. The first exhaust path and the second exhaust path are merged on the upstream side, and the temperature detection means 11 for detecting the temperature of the exhaust is provided in the second exhaust path. Yes.

  A first exhaust path 6 for discharging the oily smoke generated in the cooking chamber 2 to the outside is provided at the upper rear side opposite to the entrance of the cooking chamber 2, and a catalyst 7 is placed in the middle of the exhaust path 6. Provided.

  The rear portion of the upper cooking heater 17 in the cooking chamber 2 is extended to the vicinity immediately below the catalyst 7.

When cooking is started, the cooking heater 17 is energized and the temperature of the catalyst 7 rises at the same time, so that the cooking heater 17 can function as a catalyst heating heater.
JP 2004-261486 A

  However, in the configuration of the conventional heating cooker, the second exhaust path 9 that similarly guides the oil smoke to the outside is provided next to the first exhaust path 6 with the heat shield plate 10 interposed therebetween, and the first exhaust path 6 6 and the second exhaust path 9 are merged on the upstream side, and the second exhaust path 9 is provided with a temperature detecting means 11 for detecting the temperature of the exhaust, so that the second exhaust path 9 is thermally connected to the catalyst heater. Without being affected, the exhaust gas temperature is accurately detected and precise energization control to the cooking heater 17 is performed.

  Further, by extending the rear portion of the cooking heater 17 to the vicinity immediately below the catalyst 7, the cooking heater 17 obtains the function of the catalyst heating heater, thereby simplifying the configuration.

  From the above, in the prior art, there is no description on improving the smoke removal performance of the catalyst, protecting the catalyst from damage, and heating distribution in the cooking chamber. Therefore, the smoke removal performance of the catalyst and the damage protection of the catalyst are not described. However, there is a problem that the performance of the heating distribution is not sufficient due to restrictions on the product dimensions.

The present invention solves the above-mentioned conventional problems, and improves the smoke removal performance, prevents damage to the catalyst and makes the heating distribution uniform in the cooking chamber while simplifying the heater configuration and mounting the smoke removal function. An object of the present invention is to provide a cooking device.

  In order to solve the above-mentioned conventional problems, a heating cooker according to the present invention includes a heating heater provided in a cooking cabinet, a catalyst for decomposing oil smoke generated in the cooking cabinet, and an exhaust pipe. The exhaust heat containing oil smoke inside the exhaust path is guided from the interior of the chamber through the catalyst and exhaust pipe to the outside of the cooker, and the rear surface of the catalyst is arranged in front of the front wall of the exhaust cylinder and substantially parallel to the rear surface of the cooking chamber. Then, the rear portion of the heater is bent in a substantially L shape so as to face the catalyst, and the inside heating surface and the catalyst heating surface are formed, and the catalyst heating surface is arranged on the windward side of the catalyst.

  As a result, by arranging the catalyst substantially parallel to the rear wall of the cooking chamber, the height of the catalyst can be extended from the ceiling surface of the cooking chamber to the vicinity of the grill, and is not limited by the depth of the product, so The projected area of the passage surface can be widened, and the smoke removal ability of the catalyst can be enhanced.

  The heating cooker of the present invention has a simplified heater configuration and a smoke removal function, while improving smoke removal performance, preventing damage to the catalyst from intrusion of liquid and foreign matter from the outside of the exhaust stack, and heating distribution in the cooking chamber. Uniformity can be achieved.

  1st invention is equipped with the heater in the store | warehouse | chamber provided in the cooking chamber, the catalyst which decomposes | disassembles the oil smoke which generate | occur | produces in a store | warehouse | chamber, and an exhaust pipe, The waste heat containing the oil smoke in a store | warehouse | chamber is a catalyst from the inside. And an exhaust path that leads to the outside of the cooker through the exhaust pipe, the rear surface of the catalyst is arranged in front of the front wall surface of the exhaust pipe and substantially parallel to the rear surface of the cooking chamber, and the rear part of the heater faces the catalyst The inside heating surface and the catalyst heating surface are formed, and the catalyst heating surface is arranged on the windward side of the catalyst.

  As a result, in the case where the catalyst is disposed on a cooking heater that extends backward in the exhaust path behind the cooking chamber as in the conventional case, the depth dimension of the catalyst is limited by the depth dimension of the cooker body. However, by arranging the catalyst approximately parallel to the rear wall of the cooking chamber, the height of the catalyst can be extended from the ceiling surface of the cooking chamber to the vicinity of the grille, and is not limited by the depth of the product. The projected area of the passage surface can be widened, and the smoke removal ability of the catalyst can be enhanced.

  Further, since the catalyst is arranged so that the rear surface of the catalyst is located in front of the front wall surface of the exhaust pipe, the catalyst is arranged at a position where it cannot be seen from above the exhaust pipe, and even if foreign matter falls from the exhaust pipe, it is difficult to hit the catalyst. Therefore, the catalyst is difficult to be damaged, and the catalyst is difficult to get wet when liquid such as water or oil enters from the exhaust pipe, and it is possible to prevent breakage of the catalyst or ignition of oil or the like due to reaction heat of the catalyst.

  In a second aspect of the invention, particularly in the first aspect of the invention, the cooking chamber is provided with an upper heater and a lower heater for heating the food from both the upper and lower sides, and the rear part of the upper heater faces the catalyst. It is set as the structure which formed the inside heating surface and the catalyst heating surface in the said upper heater.

  Thus, the upper heater and the lower heater are individually energized, and the upper heater is energized before the lower heater at the start of cooking, and the catalyst can be heated simultaneously with the upper heater before the temperature rise of the lower heater starts.

  Oil smoke generated during cooking of fish and the like, in addition to those directly emanating from the cooked food, is also generated in large quantities by dripping oil from the cooked food onto a lower heater or tray.

By forming the catalyst heating surface of the heater on the upper heater, the temperature of the catalyst can be raised faster than the lower heater, and the smoke removal effect of oil smoke generated from the lower heater and the tray can be enhanced.

  In addition, in waterless cooking where water is not poured into the saucer, in order to reduce smoke generation from the saucer, the temperature rise of the saucer is often achieved by lowering the energization rate of the lower heater, and integrated with the lower heater. When the catalyst heating surface is formed, it is difficult to raise the temperature of the catalyst sufficiently because the current ratio is low in the heater, but by forming the catalyst heating surface integrally with the upper heater, the temperature of the catalyst is sufficiently raised, No smoke removal performance in cooking.

  In a third aspect of the present invention, in particular, in the second aspect, the rear wall of the cooking chamber constituting the rear surface of the cooking chamber is located in front of the catalyst heating surface at the rear of the heater and is provided with a vent hole leading to the catalyst.

  As a result, the heater of the catalyst heating unit is not exposed to the cooking chamber, the rear wall of the cooking chamber becomes a heat shielding layer of the catalyst heating unit, and the heat generation of the catalyst heating unit can hardly reach the interior of the cooking chamber, and the temperature at the back of the cooking chamber is It is possible to reduce heating unevenness that makes it easy to go up and burn the cooked food.

  According to a fourth aspect of the invention, in particular, in the third aspect of the invention, the vent hole on the rear wall of the cooking chamber is arranged at a position where the cooking chamber is projected from the front and does not overlap with the heater constituting the catalyst heating surface.

  Thereby, the cooking chamber is covered with the rear wall of the heating chamber so that the heater constituting the catalyst heating surface is not seen when projected from the front, so that the radiant heat of the heater constituting the catalyst heating surface does not directly reach the cooking chamber.

  That is, the rear wall of the cooking chamber serves as a radiant heat blocking layer for the heater that constitutes the catalyst heating surface, making it difficult for the radiant heat of the catalyst heating surface to reach the inside of the cooking chamber. Can be improved.

  According to a fifth aspect of the present invention, in particular, in any one of the second to fourth aspects of the present invention, a lower portion of a drawer portion that connects the internal heating surface of the upper heater and the catalytic heating surface bent in a substantially L shape is provided in the first portion. The structure is covered with a heat shield.

  The heater length on the upper side of the cooking chamber becomes longer at the back of the cooking chamber because there is a drawer that connects the heating surface of the upper heater to the heating surface of the catalyst bent in a substantially L shape. The heat generation distribution density in the storage becomes higher, and the temperature distribution in the storage becomes higher at the rear of the storage.

  Thereby, the cooking performance in a cooking chamber is improved by covering the lower part of the drawer | drawing-out part which connects the heating surface in the chamber of an upper heater, and the catalyst heating surface bent in the substantially L shape with a 1st heat shield. It is possible to reduce the heat generated by the drawer portion which is unnecessary for the shape to be obtained and radiate it into the cooking cabinet, suppress the temperature rise at the rear of the cooking cabinet, and reduce the heating unevenness of the cooked food.

  6th invention arrange | positions the 2nd heat shield which restrict | limits the opening between the 1st heat shield and the ceiling surface in a cooking chamber especially in any one invention of 2-5, The upper heater is sandwiched between the first heat shield plate and the second heat shield plate.

  The flow of hot air such as oily smoke generated in the cooking chamber tends to accumulate in the upper portion of the cooking chamber due to an increase in airflow due to a rise in temperature due to the high temperature around the upper heater. On the other hand, the catalyst is arranged substantially parallel to the rear surface of the cooking chamber. That is, the vent surface of the catalyst is arranged vertically.

  When the flow of hot air such as oil smoke generated in the cooking chamber tends to accumulate in the upper portion of the cooking chamber, hot air such as oil smoke concentrates on the upper portion of the catalyst, the ventilation of the lower side of the catalyst is reduced, and the smoke removal effect of the entire catalyst is lowered.

  On the other hand, the flow rate of hot air near the ceiling in the cooking chamber is limited by arranging a second heat shielding plate that limits the opening between the first heat shielding plate and the ceiling surface in the cooking chamber. It is possible to prevent the exhaust from concentrating on the upper part of the catalyst, diffuse the flow of hot air such as oil smoke to the catalyst surface, and enhance the smoke removal effect of the entire catalyst.

  In addition, by providing a contact portion with the upper heater that occurs to hold the upper heater on the ceiling surface side of the cooking chamber, it is not necessary to hold on the rear wall side of the cooking chamber, and the rear wall of the cooking chamber is directly connected to the upper heater. There is no touch.

  Thereby, the temperature rise by the direct heat conduction from the upper heater to the rear wall of the cooking chamber can be prevented, the burning of the cooked food in the rear portion of the cooking chamber can be reduced, and uneven heating can be suppressed.

  According to a seventh aspect of the invention, in particular, the first heat shield plate and the second heat shield plate of the sixth invention are made from the surrounding metal of the first heat shield plate and the second heat shield plate constituting the inside of the cooking chamber. Are made of a material having low thermal conductivity and low emissivity.

  As a result, the heat conduction to the surrounding metal is reduced by setting the first heat shielding plate and the second heat shielding plate, which are close to or directly in contact with the heater, to have a higher thermal conductivity than the surrounding metal. Temperature rise of surrounding metals can be suppressed.

  Moreover, the amount of heat radiated from the first heat shield plate and the second heat shield plate into the cooking chamber by setting the first heat shield plate and the second heat shield plate to have a lower emissivity than the surrounding metal. Suppress. These effects can improve uneven heating in the cabinet.

  According to an eighth invention, in particular, in any one of the second to seventh inventions, the upper end position of the catalyst is disposed above the ceiling surface of the cooking chamber, so that the temperature around the upper heater is high and the air flow due to temperature rise. The flow of hot air near the ceiling in the cooking chamber that tends to accumulate in the upper portion of the cooking chamber flows through an unobstructed flow path until it passes near the upper end of the catalyst.

  Thereby, the increase in the ventilation resistance in front of the catalyst part can be suppressed, and the oil smoke in the upper part of the refrigerator can be discharged through the catalyst and the smoke removal can be prevented from staying in the cooking chamber.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a perspective view of a heating cooker according to the first embodiment of the present invention. FIG. 2 shows a cross-sectional view of the heating cooker along AA in FIG. FIG. 3 shows a partial cross-sectional view of the cooking device at BB in FIG. FIG. 4 shows a perspective view of the components of the cooking device. FIG. 5 shows a perspective view of the main part of the cooking device.

  1, 2, and 3, the cooker body 21 is installed on a kitchen table 22.

  The upper surface of the main body 21 is covered by surrounding the top plate 23 made of crystallized glass with a metal top frame 24.

  On the top plate 23, heating portions 25a and 25b are printed. A ventilation panel 26 that covers the external ventilation holes is disposed at the rear of the main body 21 behind the top plate 24. Heating coils 27a and 27b (not shown) constituting induction heating means are arranged inside the main body corresponding to the heating units 25a and 25b.

  The front surface of the main body 21 at the lower part of the top frame 24 is covered mostly by a grill door 28 and a front cover 29 that covers the front surface of the main body on the side of the grill door 28. A cooling fan 30 (not shown) for cooling the internal components of the main body 21 is provided inside the front cover 29.

  Below the internal heating coil 27 a of the main body 21 is a cooking chamber 31 whose front is covered with a grill door 28. The cooking chamber 31 includes an upper heater 32 and a lower heater 33 that heat the inside of the cooking chamber, a grill 34 on which food is placed, and a tray 35 below the lower heater 33 and the grill 34.

  The cooking chamber 31 includes a catalyst 38 for decomposing oil smoke generated in the cooking chamber 31 and an exhaust cylinder 39 behind the vent 37 disposed on the rear wall 36 of the cooking chamber constituting the rear surface. An exhaust path 40 through which exhaust heat including oil smoke passes from the inside of the cooking chamber 31 through the catalyst 38 and the exhaust cylinder 39 to the outside of the main body 21 is configured.

  The rear surface of the catalyst 38 is disposed in front of the front wall surface 42 of the exhaust pipe 39 provided with the ventilation holes 41 and substantially parallel to the rear wall 36 of the cooking chamber. That is, the catalyst 38 is arranged in the vertical direction.

  The catalyst 38 has a base material such as a ceramic honeycomb coated with a catalytic functional component such as platinum or palladium.

  The upper heater 32 is bent in a substantially L shape so that the rear part faces the catalyst 38, and forms an internal heating surface 43 and a catalyst heating surface 44. The catalyst heating surface 44 is disposed on the windward side of the catalyst 38. It consists of

  FIG. 4 shows the upper heater 32. The inside heating surface 43 that heats the inside of the cooking chamber 31 from the ceiling surface side of the cooking chamber 31, and the heater that is integrated with the inside heating surface 43 are L-shaped. It comprises a catalyst heating surface 44 that is bent in a shape and faces the catalyst 38 drawn in phantom in FIG.

  The rear wall 36 of the cooking chamber constituting the rear surface of the cooking chamber 31 is positioned in front of the catalyst heating surface 44 at the rear of the upper heater 32, and an exhaust path 40 through which exhaust heat is communicated to the catalyst 38 through the vent 37 is configured.

  The exhaust tube 39 is covered with an exhaust panel 26 at the upper discharge port. Further, a recess 45 is provided in the lower part of the exhaust tube 39, and a drain hole 46 is provided.

  As in the conventional example, the catalyst is placed horizontally in the exhaust path behind the cooking chamber, and the exhaust heat goes up and down, and the cooking heater for heating the cooking chamber is further extended in a straight line. In the case where the catalyst is disposed on the extended portion, the depth dimension of the cooker body is usually limited due to the kitchen dimension limitation, and the depth dimension of the catalyst is limited. In addition, if the depth is increased in order to widen the cooking chamber, the catalyst size is reduced accordingly.

  However, by adopting the configuration of the present embodiment, the catalyst 38 is arranged vertically in parallel with the rear wall 36 of the cooking chamber, and the height of the catalyst 38 is set from the ceiling surface of the cooking chamber 31 to the vicinity of the grill 34. It can be.

  Therefore, the projected dimension of the catalyst 38 can be increased without being limited by the depth dimension of the main body 21 and the cooking chamber 31, and the projected area of the oil smoke passage surface can be widened to increase the smoke removal capability of the catalyst 38.

  In addition, by forming the internal heating surface 43 and the catalyst heating surface 44 integrally with the upper heater 32, the two heaters of the upper heater and the catalyst heater, which have been conventionally required, can be configured by one, and the heater configuration It can be equipped with a smoke removal function.

  In addition, when a conventional catalyst heater is provided individually, it is difficult to increase the size of the catalyst and the catalyst heater in order to secure the space for the catalyst heater fixing part and drawer part. Since the catalyst heating surface 44 is formed integrally with the heater 32, the fixed portion of the catalyst heating surface 44 can be prevented from interfering with the catalyst, and the projected area of the catalyst can be increased. At the same time, the catalyst heating surface which is a part of the heater Can be widened.

  Further, by forming the heater shape of the catalyst heating surface 44 in a zigzag shape, etc., the overlapping area of the heat generating portion with respect to the catalyst surface of the heater is increased, and the temperature of the entire surface of the catalyst 38 is increased and activated in response to the increased catalyst 38. Ability can be increased.

  Further, since the catalyst 38 is disposed so that the rear surface of the catalyst 38 is located in front of the front wall surface 42 of the exhaust cylinder 39, the catalyst 38 is disposed at a position where the catalyst 38 cannot be seen from above the exhaust cylinder 39. As a result, the catalyst 38 is protected by the front wall surface 42 of the exhaust tube 39 so that the catalyst 38 is not easily damaged so that it does not hit the catalyst 38 even if foreign matter such as a piece of cooked food falls from the upper part of the exhaust tube 39.

  Further, when liquid such as water or oil from the exhaust tube 39 enters, the liquid such as water or oil is prevented from reaching the catalyst 38 on the front wall surface 42, and is temporarily received by the concave portion 45 from the drain hole 46 to the main body 21. The catalyst 38 is not easily wetted, and it is possible to prevent the catalyst 38 from being damaged and the ignition of oil or the like due to the reaction heat of the catalyst.

  Further, since the upper heater 32 and the lower heater 33 are provided in the cooking chamber 31, the upper heater 32 and the lower heater 33 can be individually energized, and the upper heater 32 is energized before the lower heater 33 at the start of cooking. Start.

  At the same time as the upper heater 32 is energized, the internal heating surface 43 and the catalyst heating surface 44 constituting the upper heater 32 generate heat, the catalyst 38 is heated before the temperature rise of the lower heater 33 starts, and the catalyst 38 quickly reaches the activation temperature. be able to.

  Oil smoke generated during cooking of fish and the like is not only directly emitted from the cooked food, but also a large amount of oil smoke generated by dropping the oil from the cooked food on the lower heater 33 and the saucer 35 that have become hot. .

  By forming the catalyst heating surface 44 on the upper heater 32, the temperature of the catalyst 38 can be quickly raised with respect to the temperature rise of the lower heater 33 and the tray 35, and oil smoke generated from the lower heater 38 and the tray 35 can be removed. The smoke effect can be enhanced.

  In addition, in waterless cooking in which water is not poured into the saucer 35, in order to reduce smoke generation from the saucer 35, temperature rise suppression of the saucer 35 is often achieved by lowering the energization rate of the lower heater 33. If the catalyst heating surface 44 is formed integrally with the heater 33, it is difficult to sufficiently raise the temperature of the catalyst 38 because the energization rate of the lower heater 33 is low, but the catalyst heating is integrated with the upper heater 32 with less energization rate restrictions. By forming the surface 44, the temperature of the catalyst 38 can be sufficiently increased, and smoke removal performance in waterless cooking can be obtained.

  In addition, since the cooking chamber rear surface wall 36 is located in front of the cooking chamber 31 with respect to the catalyst heating surface 44 configured in the upper heater 32, the heater heating portion of the catalyst heating surface 43 is not exposed to the cooking chamber 31. The rear wall 36 of the cooking chamber serves as a heat shielding layer for the catalyst heating surface 43, making it difficult for heat generated at the catalyst heating surface 43 to reach the interior of the cooking chamber 31 and reducing the local temperature rise at the back of the cooking chamber 31. It is possible to reduce the heating unevenness that burns a part of the food in the dish 31.

Further, as shown in FIG. 3, the air holes 37 arranged on the rear wall 36 of the cooking chamber that constitutes the rear portion of the cooking chamber 31 overlap with the heater that constitutes the catalyst heating surface 44 when the cooking chamber 31 is projected from the front. It is arranged in a position that should not be.

  In FIG. 3, the heater which comprises the catalyst heating surface 44 is shown with a broken line.

  As a result, the cooking chamber 31 is covered with the rear wall 36 of the heating chamber so that the heater constituting the catalyst heating surface 44 is not seen when projected from the front, so that the radiant heat of the heater constituting the catalyst heating surface 44 is directly reflected in the cooking chamber 31. Not reach.

  That is, the rear wall 36 of the cooking chamber becomes a shielding layer for the radiant heat of the heater that constitutes the catalyst heating surface 44, and the radiant heat of the catalyst heating surface 44 is difficult to reach directly into the cooking chamber 31, and the food placed in the back of the cooking chamber 31. It is possible to improve the reduction of heating unevenness.

  The internal heating surface 43 and the catalyst heating surface 44 constituting the upper heater 32 are bent in a substantially L shape at the lead-out portion 47 and are integrally connected. The lower part of the drawer 47 is covered with a first heat shield plate 48. The first heat shield plate 48 is fixed to the ceiling surface 49 in the cooking chamber 31.

  A second heat shield plate 50 that restricts the opening between the first heat shield plate 48 and the ceiling surface 49 in the cooking chamber 31 is disposed, and the first heat shield plate 48 and the second heat shield plate 50 are arranged. And the upper heater 32 is sandwiched. The second heat shield 50 is fixed to the ceiling surface 49 in the cooking chamber 31.

  The first heat shield plate 48 includes a first heater holding portion 51 that holds the drawer portion 47 of the upper heater 32. The second heat shield plate 50 is provided with a second heater holding portion 52 that holds the drawing portion 47 of the upper heater 32 at a position facing the first heater holding portion 51 with the drawing portion 47 interposed therebetween. Yes.

  The first heater holding part 51 and the second heater holding part 52 hold the drawer part 47 of the upper heater 32 with the lead part 47 interposed therebetween.

  The first heat shield plate 48 and the second heat shield plate 50 are combined to close the gap when the heating chamber 31 is viewed from the front, and the second heat shield plate 50 is used for extracting hot air containing oily smoke. A hole 53 for adjusting the opening area is provided.

  Between the internal heating surface 43 configured in the upper heater 32 and the catalyst heating surface 44 configured in a substantially L-shaped curved surface, the internal heating surface 43 and the catalyst heating surface 44 are electrically and structurally provided. Are required.

  However, most of the drawer portion 47 faces the ceiling surface 49 of the cooking chamber 31 and is disposed in front of the rear wall 36 of the cooking chamber 31, so that the heater heating portion on the ceiling surface 49 side of the cooking chamber 31 is the back of the cooking chamber 31. Therefore, the heat generation amount distribution density inside the cooking chamber 31 is increased and the temperature distribution inside the cooking chamber 31 is increased at the rear portion inside the cooking chamber 31.

  The first heat shield plate 48 is disposed below the drawer portion 47 and the first heat shield plate 48 is fixed to the ceiling surface 49 in the cooking chamber 31, so that it is substantially the same as the internal heating surface 43 of the upper heater 32. The first heat shield plate 48 can cover the lower portion of the drawer portion 47 that connects the catalyst heating surface 44 arranged at the L-shaped position.

With this configuration, the temperature distribution inside the cooking chamber 31 becomes higher at the rear part in the cooking chamber 31 with respect to the heater shape that obtains the cooking performance in the cooking chamber 31, and therefore, it is generated from the drawer 47 that is unnecessary for the cooking performance. In contrast to the heat radiating into the cooking chamber 31, the first heat shield plate 48 serves as a heat shielding wall to reduce the radiant heat and suppress the temperature rise in the rear portion of the cooking chamber 31. Can be reduced.

  The upper heater 32 is sandwiched between the first heater holding portion 51 provided on the first heat shield plate 48 and the second heater holding portion 52 provided on the second heat shield plate 50, so that the cooking chamber 31. This prevents the wall surface of the upper heater 32 from directly touching the heat generating portion of the upper heater 32, suppresses the temperature rise of the ceiling surface 49 and the rear wall 36 of the cooking chamber, and obtains heat resistance of the surface treatment of the wall surface such as plating or enamel.

  The flow of hot air such as oily smoke generated in the cooking chamber 31 tends to accumulate on the upper portion of the cooking chamber 31 due to an increase in airflow due to temperature rise because the periphery of the upper heater 32 is hot. On the other hand, the catalyst 38 is disposed substantially parallel to the rear surface of the cooking chamber 31. That is, the ventilation surface of the catalyst 38 is vertical and the ventilation direction is arranged horizontally.

  If the flow of hot air such as oil smoke generated in the cooking chamber 31 tends to accumulate in the upper portion of the cooking chamber 31, hot air such as oil smoke concentrates on the upper portion of the catalyst 38, and the passage of hot air such as aeration oil smoke on the lower side of the catalyst 31 is reduced. The overall smoke removal effect of 31 is reduced.

  On the other hand, the 2nd heat insulation board 50 which restrict | limits the opening between the 1st heat insulation board 48 and the ceiling surface 49 in the cooking chamber 31 is arranged, and opening area is set by the magnitude | size and number of the punch holes 53. By restricting, the flow amount of hot air near the ceiling surface 49 in the cooking chamber 31 is restricted, exhaust gas is prevented from concentrating on the upper part of the catalyst 38, and the flow of hot air such as oil smoke is dispersed on the ventilation surface of the catalyst 38. The overall smoke removal effect of 38 can be enhanced.

  Further, by providing the contact portion with the upper heater 32 necessary for holding the upper heater 32 on the ceiling surface side of the cooking chamber, it is not necessary to hold the cooking chamber rear wall side, and the rear wall of the cooking chamber is raised. There is no direct contact with the heater.

  Thereby, the temperature rise by the direct heat conduction from the upper heater to the rear wall of the cooking chamber can be prevented, the burning of the cooked food in the rear portion of the cooking chamber can be reduced, and uneven heating can be suppressed.

  The first heat shield plate 48 and the second heat shield plate 50 are made of a material having a lower thermal conductivity and a lower emissivity than the wall surface constituting the adjacent cooking chamber 31.

  Specifically, the ceiling surface 49 and the cooking cabinet rear wall 36 are steel plates, and are subjected to plating treatment and enamel treatment. On the other hand, the 1st heat shield 48 and the 2nd heat shield 50 are comprised with the stainless steel plate.

  Thus, the first heat shield plate 48 and the second heat shield plate 50 that are heated close to or directly in contact with the upper heater 32 have a lower thermal conductivity than the ceiling surface 49 and the rear wall 36 of the cooking chamber. By using the material, the amount of heat conduction to the ceiling surface 49 and the cooking chamber rear wall 36 is reduced, and the temperature rise of the ceiling surface 49 and the cooking cabinet rear wall 36 is suppressed.

  In addition, the first heat shield plate 48 and the second heat shield plate 50 are made to have a lower emissivity surface than the ceiling surface 49 and the kitchen rear surface wall 36 which are the surrounding wall surfaces, thereby the first heat shield plate 48. The amount of heat radiated from the second heat shield 50 into the cooking chamber 31 is suppressed. Due to these effects, heating unevenness in the cooking chamber 31 can be improved.

The first heat shield plate 48 and the second heat shield plate 50 are not limited to the above-described materials for the wall surfaces constituting the adjacent cooking chamber 31. The heat plate and the second heat shield plate may be made of a material having lower thermal conductivity and lower emissivity than stainless steel plates such as porcelain.

  The catalyst storage unit upper surface 55 of the catalyst storage unit 54 that stores the catalyst 38 placed between the exhaust tube 39 and the cooking chamber rear wall 36 is arranged such that the upper end position of the catalyst 38 is above the ceiling surface 49 of the cooking chamber 31. Therefore, it is configured to be higher than the ceiling surface 49 of the cooking chamber 31.

  Thereby, there is no obstacle until the flow of hot air in the vicinity of the ceiling surface 49 that tends to accumulate in the upper portion of the cooking chamber 31 passes near the upper end portion of the catalyst 38 due to the air flow rising phenomenon due to the temperature rise due to the high temperature around the upper heater 43. It becomes a structure that flows naturally.

  Eliminates obstacles that increase the airflow resistance in front of 38 parts of the catalyst, reduces the accumulation of oily smoke in the upper part of the cooking chamber 31 and discharges it through the catalyst 38, and improves the emission of oily smoke in the cooking chamber be able to.

  As described above, the heating cooker according to the present invention is arranged so that the rear surface of the catalyst is disposed in front of the front wall surface of the exhaust pipe and substantially parallel to the rear surface of the cooking chamber, and the rear portion of the heater faces the catalyst. Bending in a letter shape, forming a heating surface inside the chamber and a catalyst heating surface, placing the catalyst heating surface on the windward side of the catalyst, and making the height of the catalyst from the ceiling surface of the cooking chamber to the vicinity of the grill net , Not limited by the depth of the product, the projected area of the catalyst's oil smoke passage surface can be widened and the smoke removal ability of the catalyst can be increased, so it can be used in gas cookers, microwave ovens, etc. that have a heater and heating cooker. Is also applicable.

The perspective view of the heating cooker in Embodiment 1 of this invention Sectional drawing in AA of FIG. 1 of the heating cooker in Embodiment 1 of this invention. 1 is a partial cross-sectional view of the heating cooker according to Embodiment 1 of the present invention taken along line BB in FIG. The perspective view of the component of the heating cooker in Embodiment 1 of this invention The principal part perspective view of the heating cooker in Embodiment 1 of this invention Cross-sectional view of a conventional cooking device

Explanation of symbols

31 Cooking chamber 32 Upper heater (heating heater)
33 Lower heater 36 Rear wall of cooking chamber 38 Catalyst 39 Exhaust tube 40 Exhaust path 43 Heating surface inside chamber 44 Catalyst heating surface

Claims (8)

A heating heater in the cooking chamber provided in the cooking cabinet, a catalyst for decomposing oil smoke generated in the cooking cabinet, and an exhaust pipe, exhaust heat including the oil smoke in the cooking chamber from the cooking chamber and the catalyst An exhaust path that leads through the exhaust pipe to the outside of the cooker is configured, the rear surface of the catalyst is disposed in front of the front wall surface of the exhaust pipe and substantially parallel to the rear surface of the cooking chamber, and the rear portion of the heater is disposed in the catalyst A cooking device in which a heating surface and a catalyst heating surface are formed so as to be bent in a substantially L shape so as to face each other, and the catalyst heating surface is disposed on the windward side of the catalyst. The cooking chamber is provided with an upper heater and a lower heater for heating the food from both the upper and lower sides, and the rear portion of the upper heater is bent in a substantially L shape so as to face the catalyst. The cooking device according to claim 1, wherein a catalyst heating surface is formed. The heating cooker according to claim 2, wherein the rear wall of the cooking chamber constituting the rear surface of the cooking chamber is located in front of the catalyst heating surface at the rear of the heating heater, and has a vent hole leading to the catalyst. The heating cooker according to claim 3, wherein the vent hole on the rear wall of the cooking chamber is arranged at a position where the cooking chamber is projected from the front and does not overlap with a heater constituting the catalyst heating surface. The lower part of the drawer | drawing-out part which connects the heating surface in a store | warehouse | chamber of an upper heater and the catalyst heating surface bent in the substantially L shape was covered with the 1st heat shield. Cooking cooker. A second heat shield plate that restricts the opening between the first heat shield plate and the ceiling surface in the cooking chamber is disposed, and the first heater and the second heat shield plate serve as an upper heater. The heating cooker of any one of Claims 2-5 which clamped. The first heat shield plate and the second heat shield plate are made of a material having a lower thermal conductivity and a lower radiation rate than the surrounding metal of the first heat shield plate and the second heat shield plate constituting the inside of the cooking chamber. The cooker according to claim 6 configured. The cooking device according to any one of claims 2 to 7, wherein the upper end position of the catalyst is disposed above the ceiling surface of the cooking chamber.

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