JP2023043368A - Cooker - Google Patents

Abstract

To provide a cooker that improves a cooling effect in a door part.SOLUTION: A cooker comprises: a pot placement part 21 in which a cooking pot is placed on an upper part of a main body 1; and a grill chamber 5 arranged below the pot placement part 21. The grill chamber 5 comprises: a heating chamber 50; a door 6 for covering an opening part of the heating chamber 50, and inserting/removing food into/from the heating chamber 50; a cooking pan 58 for housing the food in the heating chamber 50 by opening the door 6; and an upper heater 51 and a lower heater 52 for heating the food. The door 6 is formed of a box body having a plurality of spaces (a first gap 64a and a second gap 64b) into which the inside is partitioned by a partition member 64. The partition member 64 comprises a fan 69 provided in an opening part penetrating in a front-rear direction of the main body 1. A flow passing through the second gap 64b from the first gap 64a via the fan 69 is formed.SELECTED DRAWING: Figure 5

Description

The present invention relates to a built-in type heating cooker having a grill chamber.

In general, the mainstream of the grill chamber is to heat both sides of the food (to-be-cooked) such as fish by heat sources such as sheathed heaters and gas burners placed above and below the food (to-be-cooked).

In the heating chamber of this grill chamber, in addition to grill cooking in which food is heated by the radiant heat of the heat source, oven cooking is performed according to various cooking menus such as pizza, sweets, and cakes by controlling the temperature in the heating chamber. For this reason, the frequency of use of the grill chamber and the high temperature holding time are increasing. A temperature sensor such as a thermistor is provided in the heating chamber of the grill chamber, and temperature control is performed based on the detected value of the temperature sensor.

The grill chamber has an opening on the front side of the heating cooker, and a door is provided to cover the opening. When a user places food in the heating chamber, it is common to open the door by pulling the handle of the door. When cooking is performed in the grill chamber, the temperature inside the chamber rises due to the amount of heat supplied to the heat source, and the temperature of the door section also rises accordingly. Although the temperature of the outer surface of the door reaches a high temperature of 100° C. or higher, the structure is such that the heat is not easily transferred to the handle that the user touches when opening and closing the door. In order to further improve safety, it is desired to reduce the outer surface temperature of the door portion.

For example, Patent Document 1 and Patent Document 2 propose techniques for providing a fan inside a door for cooling.

Patent Document 1 discloses a technique in which an operation part is provided on the front right side of a door that opens and closes a heating chamber when viewed from the front, an air flow path is provided on the back right side of the operation part, and a blower fan is provided in the middle part of the air flow path. is disclosed. In Patent Document 1, an air flow path is divided by a partition plate, a first flow path is formed on the front side of the door from the partition plate, and a second flow path is formed on the rear side of the door from the partition plate. When the blower fan is driven, air flows through the first flow path and the second flow path. The first channel cools the substrate of the operation unit, and the second channel discharges heat from the heating chamber to the outside of the door.

Further, in Patent Document 2, an internal information detection unit for detecting information in the heating chamber is provided inside an opening/closing door that opens and closes the heating chamber, and a cooling fan is provided inside the opening/closing door for air-cooling the internal information detection unit. Techniques for providing are disclosed. In Patent Document 2, a cooling fan is arranged below an opening/closing door, and an internal information detection section is arranged above the opening/closing door. In addition, a display board and punching metal are arranged in the open/close door between the cooling fan and the internal information detector to divide the space inside the open/close door. When the cooling switch is driven, the air is diverted and flows through the space inside the divided open/close door, cooling the internal information detection section.

JP 2017-26233 A JP 2018-109453 A

In the techniques described in Patent Document 1 and Patent Document 2, in order to perform cooking operations at the door, the circuit board of the operation unit and the inside information detection unit provided on a part of the door are cooled. It is not configured to lower the door surface temperature by flowing the

In the technique described in Patent Document 1, the operation part provided on the right side of the door is cooled, and a blower fan is fitted in a partition plate that divides the air flow path into front and rear, and the air is divided into each flow path to blow air. It is designed to air-cool the circuit board of the operation part by flowing air, and does not contribute to the cooling of parts other than the operation part.

Further, in Patent Document 2, the configuration is such that the internal information detection section above the operation panel provided on the right side of the open/close door is cooled, and the air is diverted from the cooling fan provided below. For this reason, the amount of air flowing on the window glass side is reduced by the branched air passage, and the front side of the opening/closing door is not positively cooled. In addition, the air intake and exhaust volume around the fan is limited, and the axial fan, for example, tends to have a small outer shape, making it difficult to secure air volume to improve component cooling performance due to the trade-off between air volume and operating noise. .

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a heating cooker with an improved cooling effect in the door portion.

In order to achieve the above object, the present invention is characterized by: a main body; a grilling chamber, the grilling chamber comprising: a heating chamber; an openable and closable door that covers an opening of the heating chamber and inserts and removes a cooking pan into and from the heating chamber; and heating means that heats food. The door is a box having a plurality of spaces divided by partition members in the front-rear direction of the main body, wherein the partition member includes an opening penetrating in the front-rear direction of the main body and the opening. and a fan provided in the space to form a flow through the at least two spaces via said fan.

ADVANTAGE OF THE INVENTION According to this invention, the heating cooker which improved the cooling effect in a door part can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the heating cooker which concerns on Example 1 of this invention. 1 is an exploded perspective view of a heating cooker according to Embodiment 1 of the present invention; FIG. 2 is a front cross-sectional view taken along line III-III shown in FIG. 1; FIG. FIG. 2 is a side sectional view taken along line IV-IV shown in FIG. 1; BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic diagram of the side cross section which looked at the grill warehouse which concerns on Example 1 of this invention from the side. It is the upper surface schematic diagram which looked at the grill warehouse which concerns on Example 1 of this invention from upper direction. 1 is a perspective exploded view of a door according to Embodiment 1 of the present invention; FIG. It is a modification of Example 1, and is the upper surface schematic diagram which looked at the grill chamber from upper direction. It is the schematic diagram of the side cross section which looked at the grill warehouse which concerns on Example 2 of this invention from the side. It is a perspective view of the heating cooker which concerns on Example 3 of this invention. It is the schematic diagram of the side cross section which looked at the grill warehouse which concerns on Example 3 of this invention from the side. It is the upper surface schematic diagram which looked at the grill warehouse which concerns on Example 3 of this invention from upper direction. It is a modification of Example 3, and is the upper surface schematic diagram which looked at the grill chamber from upper direction. It is the schematic diagram of the side cross section which looked at the grill warehouse which concerns on Example 4 of this invention from the side.

An embodiment of the heating cooker of the present invention will be described in detail with appropriate reference to the drawings. In the following, a built-in type IH cooking heater equipped with a grill chamber will be exemplified as an example of a heating cooker, but the present invention can also be applied to a built-in type gas stove as long as the cooker includes a grill chamber. be able to.

First, the general structure of the heating cooker Z according to Embodiment 1 of the present invention will be outlined, and then the detailed structure of the grill chamber 5 will be described.

<Overall configuration of heating cooker Z>
The heating cooker Z of this embodiment has an IH (Induction Heating) function that generates eddy currents in the bottom of a metal pan placed on the upper surface, and heats the metal pan itself by Joule heat generated by the eddy currents. It is a cooker equipped with a grill function that heats the cooked food with the radiant heat of the heater. As shown in FIG. 1 and the like, hereinafter, front and rear, up and down, and left and right directions are defined with reference to the line of sight of the user facing the heating cooker Z. As shown in FIG.

FIG. 1 is a perspective view of a heating cooker according to Example 1 of the present invention. FIG. 2 is an exploded perspective view of the heating cooker according to Example 1 of the present invention. As shown in both figures, the heating cooker Z comprises a main body 1, a top plate 2, a heating coil 3, a substrate case 8, and a grill chamber 5 to which the present invention is applied.

The main body 1 is a housing having an outer shell corresponding to the space (predetermined lateral width, front-rear width, and height) in which the heating cooker Z is installed, and has a box shape (concave shape) with an open top. Inside the main body 1, a grill chamber 5 is arranged on the left side, and a substrate case 8 is arranged on the right side. A heating coil 3, a display P1, and the like are installed above the grill chamber 5 and the substrate case 8, and a top plate 2 is installed so as to cover the top opening of the main body 1. As shown in FIG.

The top plate 2 includes three pot mounting portions 21 corresponding to the installation positions of the three heating coils 3, an operation portion P0 for setting the heating condition of the metal pot mounted on the pot mounting portion 21, and an exhaust opening H2. The exhaust opening H2 is an exhaust duct 59 of the grill chamber 5, which will be described later, and an outlet of an air passage originating from the intake opening H1, and is arranged behind the top plate 2 (on the right and left sides).

A door 6 for opening and closing the grill chamber 5 by sliding back and forth is arranged on the front left side of the main body 1.例文帳に追加Details of the door 6 will be described later. Also, on the front right side of the main body 1, an operation panel P2 for mainly setting the heating condition of the grill chamber 5 and a power switch P3 for turning on/off the main power are arranged.

The substrate case 8 is a case in which electrical components such as the substrate 7 are accommodated. A fan device 9 for cooling is provided on the back side of the substrate case 8, and sucks outside air from the intake opening H1 on the back of the main body 1, and the substrates 7 stacked in the substrate case 8 and arranged downstream thereof. It is configured to supply cooling air to the heating coil 3 that is heated.

<Composition of the grill chamber 5>
FIG. 3 is a front cross-sectional view taken along line III--III shown in FIG. FIG. 4 is a side sectional view taken along line IV-IV shown in FIG. As shown in FIGS. 3 and 4, the grill chamber 5 of this embodiment includes a box-shaped heating chamber 50 provided at a front opening for loading and unloading food 57 . The heating chamber 50 is constructed by, for example, assembling a plurality of members formed by pressing an aluminum alloy plate into a predetermined shape and assembling them with screws or the like.

In this heating chamber 50 , food 57 is placed in a cooking pan 58 placed on a screen 54 and cooked. The cooking pan 58 is, for example, a deep plate made of a material such as aluminum and formed into a rectangular shape when viewed from the top, and the surface thereof is coated with a fluorine coating agent or the like.

In the heating chamber 50, an upper heater 51 and a lower heater 52 are installed so as to sandwich the cooking pan 58. By controlling the on/off of both heaters, the upper and lower surfaces of the food 57 in the cooking pan 58 can be heated at the same time. , or can be alternately heated. The upper heater 51 and the lower heater 52 are heat sources using radiant heat, such as sheathed heaters and electric heaters.

In the grill chamber 5 of this embodiment, the door 6 for closing the front opening of the heating chamber 50 is slid forward and backward by means of a pair of door rails 56 provided on the left and right lower sides of the heating chamber 50 . The width and height of the door 6 are greater than the front opening of the heating chamber 50, and the front side of the heating chamber 50 is provided with a vertically extending flange portion 50a (see FIG. 2). 6 and the flange portion 50a are substantially in surface contact with each other, the structure is such that the front opening of the heating chamber 50 can be airtight. A rubber-like packing 65 is provided on the contact surface between the door 6 and the flange portion 50a to improve the airtightness of the front opening of the heating chamber 50. As shown in FIG. In conjunction with the sliding of the door 6 using the door rail 56, the mesh base 54 on which the cooking pan 58 is placed also slides in the front-rear direction. Further, in the present invention, the fan 69 is provided inside the door 6, and power is supplied to the fan 69 by wiring along the door rail 56. FIG.

An exhaust duct 59 is provided above the back side of the heating chamber 50 to exhaust oily smoke, steam, etc., from the heating chamber 50, and the exhaust is exhausted from an exhaust opening H2 provided behind the top plate 2 (see FIG. 2). It has become. A catalyst 55 for removing smoke and deodorizing is provided in an exhaust duct 59 communicating with the exhaust opening H2.

<Configuration of door 6>
Next, the detailed structure of the door 6 of this embodiment will be described. FIG. 5 is a schematic side cross-sectional view of the grill chamber according to the first embodiment of the present invention, viewed from the side. FIG. 6 is a schematic top view of the grill chamber according to the first embodiment of the present invention, viewed from above. FIG. 7 is a perspective exploded view of the door according to Embodiment 1 of the present invention. In the schematic diagram of FIG. 5, the distance between the rear surface of the door 6 and the front surface of the heating chamber 50 is expanded from the actual distance in order to illustrate the rising air current 98 generated at the boundary between the door 6 and the heating chamber 50. However, the actual distance between them is a gap of about 1 to 2 mm which remains due to the effect of the airtight packing 65 and the like.

As shown in each figure, the door 6 is a box whose outline is formed by a glass plate 60 forming the front surface of the door 6, upper and lower door bases 61 and 66, and a frame 62 forming the rear surface, upper, lower, left and right surfaces of the door 6. is the body. The door 6 is provided with a partition member 64 that partitions the space of the box in the front-rear direction. In this embodiment, two substantially flat internal spaces (a first gap 64a and a second gap 64b) partitioned by a partition member 64 are formed in the box. The partition member 64 is formed with an opening (not shown) penetrating in the longitudinal direction of the main body, and a fan 69 is provided so as to cover the opening. The fan 69 of this embodiment is an axial fan, and is arranged to flow air from the front side of the main body to the rear side. Further, the fan 69 is connected to the control board of the main body 1, and the presence/absence of driving, the number of revolutions of the fan, and the like are controlled.

Details of each will be described below.

The glass plate 60 is a planar member, and is fixed to the frame 62 by sandwiching it between upper and lower door bases 61 and 66 .

The door base 61 is a member made of heat-resistant resin that supports the lower end of the glass plate 60, and has a handle 6a and an air inlet 61a on the front surface. In FIG. 7, the central portion of the handle 6a is cut away in order to display the intake port 61a.

The door base 66 is a member made of heat-resistant resin that supports the upper end of the glass plate 60 . By using a resin material for the door base 61, the handle 6a and the air inlet 61a can be formed in any desired shape, and the assembly and design of the door 6 can be easily improved. Inside the handle 6a that the user grips when opening and closing the door 6, an intake port 61a serving as an inlet of an air passage communicating with the first gap 64a is formed. Therefore, the handle 6a that the user touches is effectively cooled by the flow of outside air toward the intake port 61a.

The frame 62 is formed into a box shape having a predetermined thickness in the front-rear direction, with the front side open and the rear side and the top, bottom, left, and right sides closed by bending the top, bottom, left, and right ends of a thin metal plate. At the upper ends of the left and right sides of the frame 62, there are provided exhaust ports 62a serving as the outlets of air passages communicating with the second gaps 64b. The air intake port 61 a is provided on the outer shell of the space in front of the partition member 64 , and the exhaust port 62 a is provided on the outer shell of the space behind the partition member 64 .

That is, the intake port 61a is provided in the first gap 64a, and the exhaust port 62a is provided in the second gap 64b. 62a is arranged, and with the fan 69 interposed therebetween, an intake port 61a is arranged in front and an exhaust port 62a is arranged in rear. The intake port 61a is desirably arranged in such a way that it is difficult for the air having an increased temperature to be discharged from the exhaust port 62a to enter. can.

Due to the partition member 64 arranged inside the frame 62, the first gap 64a formed by the glass plate 60 and the partition member 64 becomes an air passage on the upstream side (suction side) of the fan 69 provided in the partition member 64. ing. Therefore, the fan 69 sucks outside air from the intake port 61a through the first gap 64a when driven.

A second gap 64 b formed by the frame 62 and the partition member 64 serves as an air passage on the downstream side (blowing side) of the fan 69 provided in the partition member 64 . Therefore, the fan 69 is driven to exhaust outside air sucked through the first gap 64a through the exhaust port 62b through the second gap 64b.

In order to improve the flow of air in the air passage 60a, it is desirable to increase the opening areas of the intake port 61a and the exhaust port 62a as much as possible. In addition, if the air intake port 61a is provided near the base of the handle 6a, the air intake port 61a is not visible when the main body is viewed from above or from the front when the cooking device Z is normally used. The placement is unaffected.

By utilizing the glass plate 60, the door bases 61 and 66, the frame 62, the partition member 64, and the door 6 composed of the fan 69, the outside air is efficiently supplied to the glass plate, and the glass plate 60 is cooled. A highly safe door 6 with a lowered front surface temperature can be provided.

(Modification)
FIG. 8 is a modification of the first embodiment, and is a schematic top view of the grill chamber viewed from above.

In the modification shown in FIG. 8, a partition member 64 is provided with a plurality of (two) fans 69 . The air flow is the same as in FIG. 6, and the fan 69 communicates the first gap 64a and the second gap 64b. By providing a plurality of fans 69, it is possible to easily flow outside air to every corner of the glass plate 60 having a wide area. It should be noted that the positions of the fans 69 provided on the partition member 64 are not always symmetrical regardless of the number of fans. 6, the temperature of the glass plate 60 can be kept low and uniform by appropriately adjusting the temperature distribution of the frame 62, for example, moving it toward the center of the main body.

<Air flow of door 6>
Next, the reduction of the surface temperature of the glass plate 60 in the configuration in which the fan 69 is provided inside the door 6 by the airflow of the door 6 will be described.

In this embodiment, as shown in FIGS. 5 and 6, a first gap 64a and a second gap 64b are arranged with a fan 69 installed in the partition member 64 therebetween. Therefore, the fan 69 is configured to allow air to flow from the first gap 64a toward the second gap 64b. In addition, since the intake port 61a of the first gap 64a is located below the door 6, the hot air in the heating chamber 50 is less affected by the temperature rise around the main body, and low-temperature air is supplied through the first gap 64a. Then the fan 69 sucks.

When the grill chamber 5 is used, heat is transferred to the glass plate 60 through the frame 62 and the partition member 64 by radiant heat transfer, so cooling of the glass plate 60 is required. The glass plate 60 covering most of the front surface of the door 6 serves as the wall surface of the air passage in the first gap 64a. , the glass plate 60 can be efficiently cooled. In addition, since the air that has exchanged heat with the glass plate 60 in the first gap 64a is blown to the second gap via the fan 69, the first gap 64a is always supplied with outside air having a low temperature, which improves efficiency. The glass plate 60 can be cooled well. Since the air that has flowed into the second gap 64b flows toward the exhaust port 62a along the frame 62, which is arranged near the heating chamber 50, the air whose temperature has increased by exchanging heat with the frame 62 is immediately exhausted, It can contribute to the temperature reduction of the frame 62 . By lowering the surface temperature of the frame 62, the amount of radiant heat transferred to the partition member 64, which is proportional to the fourth power of the absolute temperature, is drastically reduced, so that the temperature of the glass plate 60 can be lowered more easily.

Since the fan 69 built in the door 6 has a small wall thickness, for example, about 10 mm to 20 mm, the fan itself generally has low ventilation performance. High-speed rotation of the fan motor enables high pressure and large air volume, but the number of fans to be installed is limited due to increased noise.

In the heating cooker Z of this embodiment, as shown in FIG. 1, when the door 6 of the grill chamber 5 is closed, the front position of the glass plate 60 and the operation panel P2 becomes substantially planar. A gap of at least about 1 to 3 mm is provided at the top, bottom, left, and right of the door 6 to facilitate the opening and closing operation of the door 6.

When cooking in the grill chamber 5 is started, the temperature of the air in the heating chamber 50 rises to 200° C. or higher by the upper heater 51 and the lower heater 52 heated to 500° C. or higher. The temperature of the molded flange portion 50a and the frame 62 of the door 6 covering the front opening of the heating chamber 50 also rises. Since the frame 62 is made of metal with high thermal conductivity, it receives heat from the high-temperature air in the heating chamber 50 and heat via the flange portion 50a, and not only the plane on the heating chamber 50 side but also the left and right sides. The temperature of the whole including the side becomes high.

When both the flange portion 50a and the frame 62 become hot, the air in the gap between them and the air in the lateral gap of the frame 62 are warmed, and natural convection occurs due to the large temperature difference from the low-temperature outside air around the door 6. Due to the so-called chimney effect, an updraft 98 as shown in FIGS. 5 and 7 is generated.

As shown in FIG. 7, since the exhaust port 62a communicating with the second gap 64b is arranged in the upper part of the side surface of the frame 62, when an upward airflow 98 is generated on the side of the frame 62, the second gap A fluid force is generated that draws the air in 64b to the outside from the exhaust port 62a. Therefore, the load on the fan 69 upstream of the second gap 64b is reduced by the fluid force on the side of the exhaust port 62a, and the driving condition of the fan 69 is improved. Specifically, since the apparent pressure loss from the intake port 61a to the exhaust port 62a is reduced, the operating point air volume is increased by lowering the operating point pressure in the air blowing characteristics of the fan 69, and the air blowing volume of the fan 69 is increased. will be increased.

By reducing the load on the fan 69, even if the fan has a small pressure or a small wall thickness, it can be housed inside the door 6 and the flow that flows through the first gap 64a to the second gap 64b can be prevented. The configuration is easy, and the outside air can be efficiently supplied to the glass plate 60, so that the temperature can be lowered.

As described above, in this embodiment, the fan 69 built in the door 6 is used, and the first gap 64a on the upstream side of the fan into which the outside air having a low temperature flows is formed of an air passage having the glass plate 60 as a wall surface. , the glass plate 60 can be cooled efficiently by adopting an air passage configuration in which the air is blown out to the second gap 64b away from the glass plate 60 via the fan 69. FIG.

<Grilling operation>
Next, cooling of the door 6 during actual grill cooking will be specifically described with reference to FIGS. 1 to 6. FIG. Here, a case where the food 57 placed on the cooking pan 58 of the heating chamber 50 is heated and cooked will be described as an example.

First, the user pulls the door 6 forward to open the front opening of the heating chamber 50, puts the cooking pan 58 with the food 57 placed thereon into the heating chamber 50, and then changes the cooking temperature and time using the operation panel P2. After setting or setting a preset automatic cooking menu, the cooking button on the operation panel P2 is pressed to start grill cooking. Then, when cooking starts, the upper heater 51 or the lower heater 52 is energized, and the food 57 is heated.

At the same time, the fan 69 of the door 6 is driven, and outside air flows into the first gap 64a from the intake port 61a. The air flowing along the glass plate 60 in the first gap 64a flows through the second gap 64b via the fan 69, exchanges heat with the high-temperature frame 62, and constitutes a flow discharged from the exhaust port 62a. do.

During heating, the wall surface temperature of the heating chamber 50 rises, and the temperature of the flange portion 50a of the heating chamber and the frame 62 of the door 6 also rises due to the hot air. This hot air creates a strong updraft 98 around the door 6 . The updraft 98 flows through the outer gap of the frame 62 . The frame 62 is provided with an exhaust port 62a in a gap through which the ascending airflow 98 flows, and a fast flow is generated in the vicinity of the exhaust port 62a. Therefore, the upstream side of the exhaust port 62a becomes negative pressure, and the rising air current 98 generates a fluid force that attracts the air in the second gap 64b to the outside. Therefore, the flow load of the fan 69 is reduced by the induction action of the exhaust port 62a, and the amount of air flowing through the first gap 64a to the second gap 64b is efficiently ensured.

These phenomena continue even after the end of cooking in the heating chamber 50, so that the cooling of the door 6 with good efficiency by the fan 69 is continued.

As described above, according to the heating cooker of the present embodiment, the upward air current 98 generated in the gap around the door 6 is utilized while configuring the air passage of the fan 69 for efficiently air-cooling the glass plate 60. As a result, the flow rate of the fan 69 can be increased, and the surface temperature of the glass plate 60 can be suppressed.

Next, the heating cooker of Example 2 is demonstrated. In addition, the same code|symbol is attached|subjected to the point which is common in Example 1, and the detailed description is abbreviate|omitted.

FIG. 9 is a schematic side cross-sectional view of a grill chamber according to Embodiment 2 of the present invention, showing the structure of the handle 6a and the intake port 66a, and the through hole 64c provided in the partition member 64 of the embodiment. different from 1.

In this embodiment, a handle 6a is provided on an upper door base 66, and an intake port 66a is provided below the handle 6a. That is, the intake port 66a and the exhaust port 62a are arranged in the longitudinal direction with the fan 69 interposed therebetween. By lowering the surface temperature of the glass plate 60, even if the air intake port 66a is above the door 6, the temperature of the intake air can be suppressed from rising. That is, even if the handle 6a and the intake port 61a are moved in conjunction with each other, the effect of the present invention is less affected, and the handle 6a can be easily moved to any position in consideration of design. As a result, the arrangement of the handle 6a and the intake port 66a can be freely selected, and the door 6 can be configured with both good design and safety.

Further, the through hole 64c of the partition member 64 is a minute air passage that communicates the first gap 64a and the second gap 64b. As a result, the temperature distribution of the glass plate 60 and the partition member 64 can be reduced by causing part of the air in the stagnant portion, which is difficult to flow in the air passage, to flow back from the second gap 64b to the first gap 64a.

Next, the heating cooker of Example 3 is demonstrated. In addition, the same code|symbol is attached|subjected to the point which is common in Example 1, and the detailed description is abbreviate|omitted.

FIG. 10 is a perspective view of a heating cooker according to Example 3 of the present invention. FIG. 11 is a schematic side cross-sectional view of the grill chamber according to the third embodiment of the present invention, viewed from the side. FIG. 12 is a schematic top view of the grill chamber according to the third embodiment of the present invention, viewed from above.

The third embodiment differs from the first embodiment in the opening method of the door 6, the heat source of the heating chamber 50, and the shape of the partition member 64. FIG. Further, the fan 69 is configured by a centrifugal fan. Centrifugal fans have higher pressure than axial fans, so they are suitable for use in narrow air passages with large pressure loss.

In this embodiment, the door 6 is of a vertical opening type that is often used in, for example, microwave ovens, and the door is opened by pulling downward a handle 6a above the glass plate 60. As shown in FIG. Therefore, the door 6 has a fulcrum (not shown) below, and the door 6 is supported by, for example, a rotating mechanism 6b.

As a result, the fan 69 and the main body 1 are always connected at the lower end of the door, so that the wiring of the fan 69 is facilitated, and problems such as disconnection due to the rotation of the door 6 are less likely to occur.

Further, the upper heater 51 and the lower heater 52 of the heating chamber 50 are flat, and the height from the bottom of the chamber to the ceiling is increased, thereby increasing the effective use volume. If the interior volume is large, various cooking containers can be used, which makes it easier to use by increasing the types of menus and the amount of cooking. It goes without saying that the present invention can suppress the temperature rise of the glass plate 60 without depending on the specifications of the heating chamber 50 .

As shown in FIG. 11, in the third embodiment, the air passage width of the first gap 64a on the air inlet 61a side and the air passage width of the second gap 64b on the air outlet 62a side are widened. . It should be noted that these shapes can be more easily realized if the partition member 64 is made of a material such as resin that can be molded. Further, in this embodiment, the intake port 61a is provided on the lower surface of the door 6, and the exhaust port 62a is provided on the upper surface of the door 6. As shown in FIG. By widening the width of the air passage, the opening area of the intake port 61a and the exhaust port 62a can be easily increased, and the pressure loss in the ventilation passage can be reduced. Thereby, the ventilation resistance of each air passage (the first gap 64a and the second gap 64b) communicating with the fan 69 can be reduced. In addition, the flow load of the fan 69 is reduced, and large air volume and low noise operation can be realized, so that the glass plate 60 can be efficiently cooled.

(Modification)
FIG. 13 is a modification of Example 3, and is a schematic top view of the grill chamber as seen from above.

In the modification shown in FIG. 13, an intake port 61a communicating with a first gap 64a and an exhaust port 62a communicating with a second gap 64b are arranged on the bottom surface of the door 6. FIG. In FIG. 13, since the grill chamber 5 is viewed from above, the intake port 61a and the exhaust port 62a are not normally visible, but for convenience of explanation, the intake port 61a and the exhaust port 62a are shown. are doing.

The intake port 61a and the exhaust port 62a are separated from each other on both sides of the fan 69 so that the warm air exhausted from the exhaust port 62a is not sucked from the intake port 61a. As a result, the opening of the door 6 can be provided in a portion that is difficult for the user to see, thereby improving the design.

Next, the heating cooker of Example 4 is demonstrated. In addition, the same code|symbol is attached|subjected to the point which is common in Example 1, and the detailed description is abbreviate|omitted.

FIG. 14 is a schematic side cross-sectional view of the grill chamber according to the fourth embodiment of the present invention, viewed from the side. In the fourth embodiment, the partition member 64 is made of, for example, a resin member that can be easily molded, and the partition member 64 is provided with information detection means 67 for detecting information in the heating chamber 50, and the intake port 61a and the exhaust port 62a are provided. They are arranged on the side of the door 6 and above and below with the fan 69 interposed therebetween. Moreover, the structure in which the third gap 63 (heat shield layer) is arranged behind the second gap 64b is different from that of the first embodiment. Further, the fan 69 is configured by a centrifugal fan. As the information detecting means 67, for example, a camera for photographing the food in the heating chamber 50 or an infrared sensor for detecting the temperature of the food is used.

In this embodiment, a partition member 64 made of resin supports a fan 69 and information detection means 67 . Moreover, the partition member 64 forms an air passage (first gap 64a, second gap 64b) inside the door 6 . If the partition member 64 is made of a material that can be easily molded, the airtightness of the air passage (the first gap 64a and the second gap 64b) can be improved.

Moreover, since the thermal conductivity of the partition member 64 itself is smaller than that of a metal member, heat transfer from the second gap 64b side to the first gap 64a side can be suppressed.

Furthermore, by forming irregularities formed by molding ribs, for example, on the front and back of the partition member 64, it is possible to efficiently guide the flow to the fan 69 so as not to cause temperature unevenness. The unevenness is arranged along the air flow and serves as a guide for guiding the air to the fan 69. - 特許庁

Furthermore, fixing of the fan 69 and the information detection means 67 is facilitated, and assembly workability is improved.

Further, since the fan 69 is a centrifugal fan, it is possible to positively blow air toward a portion to be cooled, for example, the information detection means 67 .

In addition, the third gap 63 is a heat-shielding layer composed of a substantially closed space, and since the flow of air is small, heat transfer due to convective heat transfer is small, and the frame 62 is made of metal and has a low surface emissivity. Therefore, the heat transfer due to radiation inside the door can be suppressed. This makes it possible to easily mount parts other than the fan 69 inside the door 6 while suppressing the temperature rise of the glass plate 60, and it is possible to observe the food 57 in the heating chamber 50 from the door 6 and apply it to heating control. .

The present invention is not limited to the embodiments described above, but includes various modifications. The above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the described configurations. In addition, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Also, other configurations can be added, deleted, or replaced with respect to the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 1... Main body 2... Top plate 3... Heating coil 5... Grill chamber 6... Door 6a... Handle 6b... Rotating mechanism 7... Substrate 8... Substrate case 50... Heating chamber 50a... Flange Parts 51 Upper heater 52 Lower heater 54 Mesh base 55 Catalyst 56 Door rail 57 Food 58 Cooking pan 59 Exhaust duct 60 Glass plate 60a Air passage 61 Door base 61a Intake port 61b Intake cover 62 Frame 62a Exhaust port 63 Third gap (heat shield layer) 64 Partition member 64a First gap 64b Third 2 gap 64c...through hole 65...packing 66...door base 67...information detecting means 68...gap (air passage) 69...fan 98...updraft 99...airflow

Claims (9)

A main body, a pot rest on which a pot to be cooked is placed on the upper surface of the main body, and a grill chamber arranged below the pot rest,
The grilling chamber includes a heating chamber, an openable door that covers an opening of the heating chamber and inserts and removes the cooking bread into and out of the heating chamber, and heating means that heats the food,
The door is a box having a plurality of spaces divided by partition members in the front-rear direction of the main body,
The partition member includes an opening penetrating the main body in the front-rear direction, and a fan provided in the opening,
A heating cooker characterized in that a flow is configured to flow through at least two spaces via the fan. In claim 1,
A heating cooker, wherein, of the two spaces communicating with the fan, an intake port is provided in the outer shell of the space in front of the partition member, and an exhaust port is provided in the outer shell of the space behind the partition member. In claim 2,
A heating cooker, wherein the intake port and the exhaust port are arranged above and below the door with the fan interposed therebetween when the main body is viewed from the front. In claim 2 or 3,
A heating cooker, wherein the intake port and the exhaust port are arranged in front of and behind the door with the fan interposed therebetween when the main body is viewed from the front. In any one of claims 2 to 4,
The heating cooker, wherein the intake port and the exhaust port are arranged on the left and right sides of the door with the fan interposed therebetween when the main body is viewed from the front. In any one of claims 1 to 5,
A heating cooker, wherein the partition member is made of resin. In claim 6,
The heating cooker, wherein the partition member includes a guide for guiding air to the fan. In any one of claims 1 to 7,
The heating cooker, wherein the partition member is provided with information detection means for detecting information inside the heating chamber. In any one of claims 1 to 8,
A heating cooker comprising a plurality of spaces formed by the partition member, wherein a heat shielding layer is provided on the heating chamber side of the space in which the air flows by the fan.

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