JP2016217584A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker which performs hot air cooking and enables a ventilation fan motor to be cooled at high efficiency while inhibiting enlargement of a product dimension.SOLUTION: In a heating cooker 10, a ventilation fan 70 and a ventilation fan motor 71 are arranged in a first arrangement space 41 along a first wall surface 31E of a cooking chamber 37 of a space 40 formed between an exterior case 11 and a wall of the cooking chamber 37. A control part 95, a cooling fan 75, and a cooling fan motor 76 are arranged in a second arrangement space 42 along a second wall surface 31C different from the first wall surface 31E.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a heating cooker that performs hot-air cooking.

  Hot-air cooking is a cooking method for cooking an object to be cooked arranged in a cooking chamber by supplying air (hot air) heated to a high temperature into the cooking chamber. The cooking device that performs hot-air cooking can draw fried food such as fried potatoes and fried shrimp without using oil.

  As an example of the heating cooker, there is an apparatus including a blower fan that circulates and supplies air in the cooking chamber and a heating unit that heats the air supplied into the cooking chamber. Patent Documents 1 and 2 disclose a cooking device in which a cooling fan for cooling the fan motor is further arranged in order to prevent the fan motor that drives the blower fan from being heated by circulating hot air.

JP 2002-147663 A JP 2014-59128 A

  However, the heating cooker of Patent Document 1 has a single fan motor arranged at the rear side of the cooking chamber, and a blower fan and a cooling fan are arranged at intervals in the axial direction on the rotation shaft of the fan motor. Therefore, the product size of the rear side part becomes large. Moreover, since the heating cooker of patent document 2 arrange | positions the ventilation fan and the ventilation fan motor in the rear side part of a cooking chamber, and has further arrange | positioned the cooling fan provided with a cooling fan motor beside the ventilation fan motor. After all, the product size of the rear side is increased.

  An object of the present invention is to cool a blower fan motor with high efficiency while suppressing an increase in product size.

  The present invention provides an exterior case having an opening / closing door, a cooking chamber in which two or more portions excluding the portion where the opening / closing door is disposed are defined by a wall disposed at an interval inside the exterior case, and the cooking A heating unit that heats an object to be cooked disposed indoors, a blower fan that causes the air in the cooking chamber to flow out of the cooking chamber, a blower fan motor that drives the blower fan, and cooling air to the blower fan motor A cooling fan that drives the cooling fan, a heating unit, a blower fan motor, and a control unit that controls the cooling fan motor, the exterior case and the cooking chamber Among the spaces formed between the walls, the blower fan and the blower fan motor are arranged in a first arrangement space along the first wall surface of the cooking chamber. The second arrangement space along the second wall different from the first wall, and arranged with the control unit and the cooling fan and the cooling fan motor, to provide a heating cooker.

  According to this aspect, the blower fan and the blower fan motor are arranged in the first arrangement space along the first wall surface in the space between the exterior case and the wall of the cooking chamber, and along the different second wall surface. Since the cooling fan and the cooling fan motor are arranged in the second arrangement space, an increase in the product size of the first arrangement space can be suppressed. Moreover, the second arrangement space is a part where the control unit is arranged, and is a part that becomes a dead space where nothing else is arranged in the conventional art. By arranging the cooling fan and the cooling fan motor in the dead space of the second arrangement space, it is possible to suppress the maximum product size of the entire cooking device from being maximized.

  In addition, a ventilation fan flows the hot air (hot air) in the cooking chamber heated by the heating part out of the cooking chamber. Therefore, on the first arrangement space side where the blower fan and the blower fan motor are arranged, high-temperature hot air always flows, so that the temperature is higher than that of other arrangement spaces. On the other hand, the second arrangement space in which the cooling fan and the cooling fan motor are arranged is a lower temperature area than the first arrangement space. Since air in this low temperature region is supplied as cooling air to the blower fan motor, the blower fan motor can be cooled with high efficiency.

  A first member arranged in the first arrangement space; a second part arranged in the second arrangement space; and a communication member for guiding cooling air from the cooling fan to the blower fan motor, The second portion is disposed at a distance from the second wall. According to this aspect, it is possible to suppress the heat in the cooking chamber from being transmitted into the communicating member. Therefore, since it can suppress that the cooling air sent out from the cooling fan heats up in 2nd arrangement | positioning space, a ventilation fan motor can be cooled reliably.

  A communication member that has a first portion disposed in the first placement space and a second portion disposed in the second placement space, and that guides cooling air from the cooling fan to the blower fan motor; And the first portion is spaced from the first wall. According to this aspect, since it can suppress that the cooling air sent out from the cooling fan heats up in 1st arrangement | positioning space, a ventilation fan motor can be cooled reliably.

  A heating chamber communicating with the cooking chamber is provided on the first arrangement space side of the cooking chamber, the heating unit and the blower fan are disposed in the heating chamber, and the air sucked into the heating chamber from the cooking chamber Is heated by the heating unit, and the heated hot air is circulated and supplied to the cooking chamber. According to this aspect, it can heat repeatedly, circulating the air in a cooking chamber. Therefore, since the hot air supplied to a to-be-cooked object can be heated with high efficiency, efficient hot-air cooking can be realized.

  The second arrangement space is an area extending in a direction orthogonal to a circulation center line of hot air in the cooking chamber circulated by the blower fan. Here, the circulation center line is a line passing through the center of hot air circulating in the cooking chamber. According to this aspect, the 2nd wall between 2nd arrangement | positioning space and a cooking chamber makes the state extended in parallel with the circulation direction of a hot air. Therefore, hot air circulating in the cooking chamber does not collide with the second wall. Therefore, the second arrangement space is the lowest temperature area among all the arrangement spaces. Since the control unit and the cooling fan are arranged in the second arrangement space, the temperature rise of the control unit can be prevented and the blower fan motor can be reliably cooled.

  An accommodation case in which the cooling fan motor is arranged is arranged in the second arrangement space, an opening is provided on the exterior case side of the accommodation case, and the cooling fan is provided in a closing portion opposite to the opening. A vent hole communicating with the side is provided. According to this aspect, it becomes easy to take in air outside the exterior case as cooling air. Moreover, since the heat | fever in a cooking chamber is interrupted | blocked by the storage case, it can suppress that the air in a storage case heats up. Thus, the blower fan motor can be reliably cooled.

  The opening of the housing case extends over the entire area other than the area occupied by the necessary components in the second arrangement space including the board box that houses the control unit. According to this aspect, the opening part of a storage case can be enlarged as much as possible. Therefore, since it becomes easy to take in a lot of outside air that has not been heated as cooling air, the blower fan can be cooled with high efficiency.

  In the cooking device of the present invention, the blower fan and the blower fan motor are arranged in the first arrangement space along the first wall surface of the cooking chamber, and the second arrangement space along the second wall surface different from the first wall surface. Since the cooling fan and the cooling fan motor are arranged in this, it is possible to suppress an increase in the product size of the cooking device. And since 2nd arrangement | positioning space is a part which a dead space produces by arrange | positioning a control part, it can suppress to the maximum that the product dimension of the whole heating cooking appliance becomes large. Moreover, the 1st arrangement | positioning space which arrange | positions a ventilation fan and a ventilation fan motor is the hottest area | region where the air in the cooking chamber heated at high temperature flows, and the 2nd arrangement space which arrange | positions a cooling fan and a cooling fan motor is Since it is a low temperature area | region than 1st arrangement | positioning space, a ventilation fan motor can be cooled with high efficiency.

The perspective view which shows the heating cooker of this embodiment. The cross-sectional perspective view of a heating cooker. The longitudinal cross-sectional view of a heating cooker. The cross-sectional view of a heating cooker. The perspective view which shows the rear side of a heating cooker. The disassembled perspective view which shows the structure of a ventilation fan, a cooling fan, and a communicating member. The side view which shows the 2nd arrangement space of a heating cooker.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a heating cooker 10 according to an embodiment of the present invention. In the following description, the direction is specified with the front side provided with the opening / closing door 20 as the front side in each figure. Moreover, F described in each figure means the front side, B means the rear side, L means the left side, and R means the right side.

(overall structure)
As shown in FIGS. 2 and 3, the heating cooker 10 includes a heating chamber 30 inside the exterior case 11. The inside of the heating chamber 30 is divided into a cooking chamber 37 and a heating chamber 38 by a partition wall 32. Grill heating units 65 </ b> A to 65 </ b> E are arranged inside the cooking chamber 37, and air blowing heating units 67 </ b> A and 67 </ b> B are arranged inside the heating chamber 38.

  As shown in FIG. 4, a component arrangement space (space) 40 in which components are arranged is formed between the outer case 11 and the cooking chamber 37. A heating chamber 38 is formed in the rear arrangement space 41 of the component arrangement space 40, a blower fan 70 is arranged inside the heating chamber 38, and a blower fan motor 71 is arranged outside the heating chamber 38. A board box 93 that houses a control board (control unit) 95 is arranged in a right arrangement space (second arrangement space) 42 different from the rear arrangement space (first arrangement space) 41. A cooling fan 75 and a cooling fan motor 76 for cooling the blower fan motor 71 are further arranged in the right arrangement space 42.

  Specifically, as shown in FIGS. 1 to 3, the outer case 11 of the cooking device 10 includes a base plate 12 located at the bottom, an outer cover 13 that covers the left side, the right side, and the upper side of the base plate 12. The rear cover 14 covering the rear side portion of the base plate 12 and the front plate 15 disposed on the front side portion of the base plate 12 are provided. The rear cover 14 and the front plate 15 are erected upward from the front and rear ends of the base plate 12, and the space between them is covered with the outer cover 13, thereby forming a rectangular parallelepiped outer case 11. As shown most clearly in FIG. 1, an opening 16 is provided in the front plate 15, and an opening / closing door 20 is attached to the opening 16. The open / close door 20 includes a window portion 21 through which the inside of the cooking chamber 37 can be seen.

  As shown in FIG. 2 to FIG. 4, the heating chamber 30 is closed at portions other than the front end (opening / closing door 20) by heat shield walls 31 </ b> A to 31 </ b> E arranged with a space from the exterior case 11. The front end of the heating chamber 30 is an opening 16 of the outer case 11, and the opening 16 is closed by the open / close door 20. A rectangular parallelepiped heating chamber 30 is formed by the heat shield walls 31 </ b> A to 31 </ b> E and the opening / closing door 20. The cooking chamber 37 of the heating chamber 30 includes an upper heat shield wall 31A, a left heat shield wall 31B, a right heat shield wall (second wall) 31C, a lower heat shield wall 31D, and a partition wall (first wall). 32 and the opening / closing door 20. The heating chamber 38 of the heating chamber 30 is defined by an upper heat shield wall 31A, a left heat shield wall 31B, a right heat shield wall 31C, a lower heat shield wall 31D, a rear heat shield wall 31E, and a partition wall 32. ing.

  As shown in FIG.2 and FIG.3, the cooking chamber 37 and the heating chamber 38 are connected by the suction inlet 34 and the pair of upper and lower outlets 36A, 36B. The suction port 34 includes a large number of holes provided at the center of the partition wall 32. At the upper end of the partition wall 32, an upper air guide portion 33A that is inclined forward toward the upper heat shield wall 31A is provided. An upper outlet 36A is formed by a gap between the tip of the upper air guide portion 33A and the upper heat shield wall 31A. Further, a lower air guide portion 33B that is inclined forward toward the lower heat shield wall 31D is provided at the lower end of the partition wall 32. A lower outlet 36B is formed by a gap between the tip of the lower air guide portion 33B and the lower heat shield wall 31D.

  As shown in FIGS. 1 to 3, a net-like placement member 50 is arranged inside the cooking chamber 37. The mounting member 50 is located approximately at the center of the cooking chamber 37 in the vertical direction and is arranged to extend in the front-rear direction. There are a case where the object to be cooked is arranged directly on the mounting member 50 and a case where the object to be cooked is arranged in a state where the object to be cooked is housed in the illustrated packaged case 60. The package case 60 includes a separable lower plate 61 and an upper lid 62, and hot air passes through a pair of openings 63A and 63B formed in the upper lid 62.

  Between the exterior case 11 and the wall that defines the cooking chamber 37, a component placement space 40 in which components including a control board 95 as a control unit are placed is formed. The component placement space 40 includes a rear placement space 41 that is a first placement space, a right placement space 42 that is a second placement space, a left placement space 43, an upper placement space 44, and a lower placement space 45. . The rear placement space 41 is composed of a region between the rear cover 14 of the outer case 11 and the partition wall 32 that is the first wall surface. The right arrangement space 42 includes a region between the right surface portion 13a of the outer cover 13 and the right heat shield wall 31C of the heating chamber 30 that is the second wall surface. The left arrangement space 43 includes a region between the left surface portion 13 b of the outer cover 13 and the left heat shield wall 31 </ b> B of the heating chamber 30. The upper arrangement space 44 includes a region between the upper surface portion 13 c of the outer cover 13 and the upper heat shield wall 31 </ b> A of the heating chamber 30. The lower arrangement space 45 includes an area between the base plate 12 of the outer case 11 and the lower heat shield wall D of the heating chamber 30.

  As shown in FIG.2 and FIG.3, the five grill heating parts 65A-65E which are 1st heating parts are arrange | positioned in the cooking chamber 37 located in the opening part 16 side, and heat a to-be-cooked object by radiant heat. To do. The two blower heating units 67A and 67B as the second heating unit are arranged in the heating chamber 38 located in the rear arrangement space 41, and heat the circulating air so that the food to be cooked is heated by the heated hot air. Heat. These heating units 65A to 65E, 67A, and 67B are, for example, quartz tube heaters, and may be sheath heaters. The heating units 65A to 65E, 67A, and 67B are installed from the left heat shield wall 31B to the right heat shield wall 31C. The two grill heating parts 65A and 65B are arranged in the vicinity of the upper heat shield wall 31A in the cooking chamber 37 with a space in the front-rear direction. The three grill heating parts 65C to 65E are arranged in the vicinity of the lower heat shield wall 31D in the cooking chamber 37 with a space in the front-rear direction. The blower heating unit 67A is disposed in the vicinity of the upper heat shield wall 31A in the heating chamber 38. The blower heating unit 67B is disposed in the vicinity of the lower heat shield wall 31D in the heating chamber 38.

(Arrangement of fan, fan motor and control unit)
The blower fan 70 is arranged inside a heating chamber 38 formed in a rear arrangement space (first arrangement space) 41 along the partition wall (first wall surface) 32. The blower fan 70 causes the air in the cooking chamber 37 to flow out of the cooking chamber 37 through the suction port 34. Further, the air that has flowed into the heating chamber 38 is circulated and supplied from the heating chamber 38 into the cooking chamber 37. Referring to FIG. 6, the blower fan 70 is a centrifugal fan such as a turbo type or a sirocco type that sends out air sucked from the axial direction in the radial direction. Referring also to FIG. 4, the blower fan motor 71 that drives the blower fan 70 is arranged on the rear cover 14 side of the rear heat shield wall 31 </ b> E in the rear arrangement space 41. The output shaft 72 of the blower fan motor 71 protrudes into the heating chamber 38 through the rear heat shield wall 31E. The output shaft 72 is arranged such that the axis extends in a direction perpendicular to the partition wall 32 and coincides with the center of the suction port 34.

  The air circulation by the blower fan 70 will be described with reference to FIG. The air in the heating chamber 30 is supplied into the cooking chamber 37 from the upper and lower outlets 36 </ b> A and 36 </ b> B of the heating chamber 38 by driving the blower fan 70. As indicated by an arrow W <b> 1 in FIG. 3, the air discharged from the upper outlet 36 </ b> A flows along the upper heat shield wall 31 </ b> A and the inner surfaces of the open / close door 20. As indicated by an arrow W2 in FIG. 3, the air discharged from the lower outlet 36B flows along the lower heat shield wall 31D and the inner surfaces of the open / close door 20. The two airflows W1 and W2 collide near the center of the opening / closing door 20 in the height direction, and merge into a horizontal airflow W3 that flows to the rear side. The air flow W3 passes through the package case 60 through the openings 63A and 63B, and returns to the heating chamber 38 through the suction port 34. Therefore, the rear arrangement space 41 side where the blower fan 70 and the blower fan motor 71 are arranged has the highest temperature compared to the other arrangement spaces 42 to 45 because hot hot air always flows.

  As shown in FIG. 1, an operation panel 90 is disposed on the right side of the opening / closing door 20. The operation panel 90 includes a plurality of input units 91 for a user to select a cooking menu, and a display unit 92 for displaying a selection state and an operation state. As shown in FIGS. 4 and 5, a substrate box 93 is disposed on the back of the operation panel 90. Inside the board box 93, a control board 95 as a control unit is arranged. The board box 93 is arranged in a right arrangement space (second arrangement space) 42 along a right heat shield wall (second wall surface) 31C different from the rear arrangement space 41 where the blower fan 70 and the blower fan motor 71 are arranged. Has been.

  The control board 95 is electrically connected to the operation panel 90, grill heating units 65 </ b> A to 65 </ b> E, blower heating units 67 </ b> A and 67 </ b> B, blower fan motor 71, and cooling fan motor 76. When grill cooking is selected by operating the operation panel 90, the microcomputer mounted on the control board 95 operates the grill heating units 65A to 65E and heats the food to be cooked disposed inside the cooking chamber 37 only by radiant heat. Cook. When hot air circulation cooking is selected, the grill heating units 65A to 65E, the blower heating units 67A and 67B, the blower fan motor 71, and the cooling fan motor 76 are controlled, and are arranged inside the cooking chamber 37 with only hot air. Cook the food to be cooked.

  The cooling fan 75 is arranged in the right arrangement space 42 that is the same as the board box 93 (control board 95) in the component arrangement space 40. The cooling fan 75 supplies cooling air to the blower fan motor 71 to prevent overheating of the blower fan motor 71. Referring to FIG. 6, similarly to the blower fan 70, the cooling fan 75 is a centrifugal fan such as a turbo type or a sirocco type that sends out air sucked from the axial direction in the radial direction. The cooling fan motor 76 that drives the cooling fan 75 is arranged on the right surface portion 13 a side of the outer cover 13 with respect to the cooling fan 75 in the right arrangement space 42.

  Thus, in the component arrangement space 40 between the exterior case 11 and the heating chamber 30, the blower fan 70 and the blower fan motor 71 are arranged in the rear placement space 41 along the partition wall 32, and the cooling fan 75 and the cooling fan motor are arranged. By arranging 76 in the right arrangement space 42 along the right heat shield wall 31C different from the partition wall 32, it is possible to suppress an increase in the product size of the rear arrangement space 41 of the heating cooker 10. The right arrangement space 42 of the component arrangement space 40 is a portion where a wide dead space is generated by arranging the board box 93 (control board 95), and the cooling fan 75 and the cooling fan motor 76 are arranged in the dead space. Thereby, it can suppress to the maximum that the product dimension of the heating cooker 10 whole becomes large.

  3 and 4, the right arrangement space 42 in which the control board 95, the cooling fan 75, and the cooling fan motor 76 are arranged is hot air W <b> 1, W <b> 3 that circulates in the cooking chamber 37 in a generally long cylindrical shape by the blower fan 70. And a region extending in a direction orthogonal to the circulation center lines P1 and P2 passing through the centers of W2 and W3. The right heat shield wall 31C that divides the right arrangement space 42 and the cooking chamber 37 extends in parallel with the circulation direction of the circulating hot air W1 to W3. Therefore, like the open / close door 20 and the rear heat shield wall 31E, the cooking chamber The hot air circulating in 37 does not collide. Further, unlike the upper heat shield wall 31A and the lower heat shield wall 31D, the hot hot air W1 and W2 supplied from the heating chamber 38 are not always parts that pass through the vicinity. Therefore, the right arrangement space 42 partitioned by the right heat shield wall 31 </ b> C is the lowest temperature (temperature is unlikely to rise) among the arrangement spaces 41 to 45 of the component arrangement space 40. By disposing the control board 95, the cooling fan 75, and the cooling fan motor 76 in the right arrangement space 42, it is possible to prevent the temperature of the control board 95 from rising and to reliably supply the cooling fan with low temperature to the blower fan motor 71.

(Details of arrangement of cooling fan and cooling fan motor)
As shown in FIGS. 4 and 5, a communication member 80 that guides the cooling air from the cooling fan 75 to the blower fan motor 71 is arranged in the component arrangement space 40. In the right arrangement space 42, a cooling fan motor 76 is arranged inside, and an accommodation case 85 for allowing mainly air outside the outer case 11 to be taken into the cooling fan 75 is arranged.

  The communication member 80 has an L shape in a plan view including a first portion arranged in the rear arrangement space 41 and a second portion arranged in the right arrangement space 42, and is connected to the blower fan motor 71 in the rear arrangement space 41. It extends over the cooling fan 75 in the right arrangement space 42. The communication member 80 prevents the cooling air supplied to the blower fan motor 71 from being heated by the heat in the heating chamber 30, and the heating chamber through the heat shield walls 31A to 31E by the cooling air from the cooling fan 75. The temperature inside 30 is prevented from falling.

  Referring also to FIG. 6, the communication member 80 includes a motor arrangement member 81 arranged in the rear arrangement space 41, a fan arrangement member 82 arranged in the right arrangement space 42, and a duct 83 connecting them. . Among them, a part of the motor arrangement member 81 and a part of the duct 83 are the first part arranged in the rear arrangement space 41. Further, a part of the fan arrangement member 82 and a part of the duct 83 are the second part arranged in the right arrangement space 42. In the present embodiment, the motor arrangement member 81, the fan arrangement member 82, and the duct 83 are formed separately and connected to each other, but may be provided integrally.

  The motor arrangement member 81 has a rectangular cylindrical shape, and the blower fan motor 71 is arranged therein. The motor arrangement member 81 is fixed to the rear heat shield wall 31E by screws so that the motor arrangement member 81 is positioned at a distance from the partition wall 32, which is the first wall. The motor arrangement member 81 includes a connection duct portion 81 a that protrudes toward the right arrangement space 42. The connecting duct portion 81a is positioned at a predetermined interval with respect to the rear heat shield wall 31E so that a heat insulating space 84A set between the heat shield 30 and the rear heat shield wall 31E is formed. The end of the motor arrangement member 81 is covered with an end wall 81b. An exhaust hole 81c for discharging the supplied cooling air to the outside is provided on the upper surface of the motor arrangement member 81. Further, an insertion hole 81 d through which the output shaft 72 of the blower fan motor 71 projects is provided on the surface facing the rear heat shield wall 31 </ b> E of the motor arrangement member 81.

  The fan arrangement member 82 has a substantially cylindrical shape that closes the right heat shield wall 31C side and opens the housing case 85 side, and the cooling fan 75 is arranged inside. The fan arrangement member 82 includes a connecting duct portion 82 a that protrudes toward the rear arrangement space 41. The opening 82b on the housing case 85 side of the fan arranging member 82 is covered with the housing case 85 by fixing the fan arranging member 82 to the housing case 85 with screws. And the fan arrangement | positioning member 82 is arrange | positioned at predetermined intervals so that the heat insulation space 84B set with respect to the right heat shield wall 31C of the heating chamber 30 may be formed.

  The duct 83 has a cylindrical shape bent in an L shape in plan view. The duct 83 is provided with a first connection portion 83a connected to the connection duct portion 81a of the motor arrangement member 81 on one end side, and a second connection portion 83b connected to the connection duct portion 82a of the fan arrangement member 82 on the other end side. Is provided. The duct 83 is fixed by screwing the motor arrangement member 81 to the rear heat shield wall 31 </ b> E, and is fixed by screwing the fan arrangement member 82 to the housing case 85. Of course, with respect to the heat shield wall 31E located in parallel to the partition wall 32 and the heat shield wall 31C as the second wall, a predetermined space is formed so that the set heat insulation space 84C is formed. Has been placed.

  The communication member 80 configured as described above is disposed at an interval from the partition wall 32 that is the first wall and the right heat shield wall 31C that is the second wall. And the connection duct part 81a of the motor arrangement | positioning member 81 is arrange | positioned at intervals also with respect to the rear heat shield wall 31E of the heating chamber 30. FIG. Specifically, the connecting duct portion 81a of the motor arrangement member 81 and the first connecting portion 83a of the duct 83, which are the first portions, are arranged with a space from the rear heat shield wall 31E as well as the partition wall 32. Further, the connecting duct portion 82a of the fan arrangement member 82, which is the second portion, and the second connecting portion 83b of the duct 83 are arranged with a space from the right heat shield wall 31C. Therefore, in any of the right arrangement space 42 and the rear arrangement space 41, the heat in the cooking chamber 37 can be prevented from being transmitted into the communication member 80. Therefore, since it can suppress that the cooling air sent out from the cooling fan 75 heats up, the ventilation fan motor 71 can be cooled reliably.

  As shown in FIG. 4 to FIG. 6, the housing case 85 is a rectangular tube-shaped container having a heat shielding property that opens on the right surface 13 a side of the outer cover 13 and closes the communication member 80 side. As shown most clearly in FIG. 6, the housing case 85 is provided with a vent hole 88 communicating with the inside of the fan arrangement member 82 of the communication member 80 in the closing portion 87 opposite to the opening 86. The output shaft 77 of the cooling fan motor 76 protrudes into the fan arrangement member 82 through the vent hole 88.

  As shown in FIG. 4, the opening 86 of the housing case 85 is covered by the right surface 13 a of the outer cover 13. Therefore, by operating the cooling fan 75 by driving the cooling fan motor 76, it becomes easy to take outside air as cooling air through the ventilation holes of the outer cover 13 into the housing case 85. Moreover, since the heat in the cooking chamber 37 is interrupted by the storage case 85, the temperature inside the storage case 85 is suppressed. Therefore, the blower fan motor 71 to which the heat in the heating chamber 30 is transmitted through the rear heat shield wall 31E can be reliably cooled.

  As shown in FIG. 7, the opening 86 of the housing case 85 extends to the whole area other than the area occupied by the components necessary for the right arrangement space 42. Specifically, the components necessary for the right arrangement space 42 include a substrate box 93 that accommodates the control substrate 95. In addition, a detection unit 97 including a micro switch 96 that detects the open / close state of the open / close door 20 is disposed between the substrate box 93 and the heating chamber 30. The components necessary for the right arrangement space 42 include a wiring space 98 necessary for electrically connecting the control board 95 in the board box 93 to the detection unit 97 and each drive component. The opening 86 extends over the whole area other than the area occupied by these elements 93 and 98. When the right arrangement space 42 is viewed from the front, the opening area of the opening 86 of the housing case 85 occupies a region that is more than half of the right arrangement space 42. Therefore, a large amount of outside air that has not been heated can be taken in as cooling air. Therefore, the blower fan motor 71 can be reliably cooled.

  Since the heating cooker 10 thus configured circulates and supplies the air in the cooking chamber 37 while heating, the hot air supplied to the object to be cooked can be heated with high efficiency, so that efficient hot air cooking can be realized. Further, in the component arrangement space 40 between the outer case 11 and the heating chamber 30, the blower fan 70 and the blower fan motor 71 are arranged in the rear placement space 41, and the control board 95, the cooling fan 75, and the cooling fan motor, which are control units, are arranged. 76 is arranged in a different right arrangement space 42, it is possible to prevent the product size of the heating cooker 10 from increasing. Further, since the right arrangement space 42 is a lower temperature area than the rear arrangement space 41, the blower fan motor 71 can be reliably cooled.

  In addition, the heating cooker of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, the communication member 80 includes a connection duct portion 81a of the motor arrangement member 81 that is the first portion and a first connection portion 83a of the duct 83, and a connection duct portion 82a and the duct 83 of the fan arrangement member 82 that is the second portion. Although the 2nd connection part 83b was arrange | positioned at intervals with respect to the heat insulation wall 31C, 31E of the heating chamber 30 (cooking room 37), only the 2nd part is spaced apart with respect to the right heat insulation wall 31C. Alternatively, only the first portion may be disposed with a space from the rear heat shield wall 31E. Further, the cooling air may be supplied to the blower fan motor 71 through the component arrangement space 40 without providing the communication member 80.

  The control board 95, the cooling fan 75, and the cooling fan motor 76, which are control units, are arranged in the right arrangement space 42 of the component arrangement space 40, but may be arranged in the left arrangement space 43 or the upper arrangement space 44. May be arranged in the lower arrangement space 45. In other words, any arrangement space 42 to 45 different from the rear arrangement space 41 where the blower fan 70 and the blower fan motor 71 are arranged may be arranged. Of course, the blower fan 70 and the blower fan motor 71 may also be arranged in the arrangement spaces 42 to 45 other than the rear arrangement space 41.

  Further, although the cooling fan motor 76 is disposed inside the housing case 85, the cooling fan motor 76 may be disposed in the component placement space 40 without placing the housing case 85. In addition, as the heating unit for heating the cooking object in the cooking chamber 37, the grill heating units 65 </ b> A to 65 </ b> E are disposed in the cooking chamber 37, and the blower heating units 67 </ b> A and 67 </ b> B are disposed in the heating chamber 38. Only one may be arranged.

  The cooking chamber 37 is defined by the heat shield walls 31A to 31D and the partition wall 32 except for the portion where the open / close door 20 is arranged. (1 wall and 2nd wall) may be provided at intervals, and the other part may also be used as the wall of the outer case 11. Or you may provide the wall of another part, without leaving the space | interval (space) which can arrange | position a component with respect to the exterior case 11. FIG. Further, although the heating chamber 38 partitioned by the partition wall 32 is provided on the rear arrangement space 41 side of the cooking chamber 37, a configuration in which the heating chamber 38 is not provided may be employed. In this case, the first wall of the cooking chamber 37 is a rear heat shield wall 31 </ b> E that defines the heating chamber 30.

  In addition, the present invention provides an arrangement space for the blower fan 70 and the blower fan motor 71, and an arrangement space for the controller 95, the cooling fan 75, and the cooling fan motor 72, along the different walls that define the cooking chamber 37. It has the characteristics in the structure to do. Therefore, in the said embodiment, although the heating cooker 10 which can perform both grill cooking and hot air circulation cooking was mentioned as an example, the heating cooker to which this invention is applied is only hot air circulation cooking. A dedicated device (convection oven) may be used. The hot air circulates in a pair of long cylindrical shapes. However, the hot air may circulate in one long cylindrical shape, or may circulate in a cylindrical shape. It can be changed according to Moreover, the air in the cooking chamber 37 is sucked by the blower fan 70 that is a blower fan, and the hot air heated in the heating chamber 38 is circulated to perform cooking without being circulated by the fan 70. A cooking device that allows the air in the cooking chamber 37 to flow out of the outer case 11 may be used.

DESCRIPTION OF SYMBOLS 10 Heating cooker 11 Exterior case 12 Base plate 13 Outer cover 13a Right side part 13b Left side part 13c Upper side part 14 Rear cover 15 Front plate 16 Opening part 20 Opening / closing door 21 Window part 30 Heating chamber 31A Upper heat shield wall 31B Left heat shield wall 31C Right heat shield wall (second wall)
31D Lower heat shield wall 31E Rear heat shield wall 32 Bulkhead (first wall)
33A, 33B Air guide part 34 Suction port 36A, 36B Air outlet 37 Cooking room 38 Heating room 40 Parts placement space (space)
41 Rear placement space (first placement space)
42 Right arrangement space (second arrangement space)
43 Left arrangement space 44 Upper arrangement space 45 Lower arrangement space 50 Placement member 60 Baked case 61 Lower dish 62 Upper lid 63A, 63B Opening 65A to 65E Grill heating part (heating part)
67A, 67B Blower heating unit (heating unit)
70 Blower Fan 71 Blower Fan Motor 72 Output Shaft 75 Cooling Fan 76 Cooling Fan Motor 77 Output Shaft 80 Communication Member 81 Motor Arrangement Member 81a Connection Duct (First Part)
81b End wall 81c Exhaust hole 81d Insertion hole 82 Fan arrangement member 82a Connection duct part (2nd part)
82b Opening 83 Duct 83a 1st connection part (1st part)
83b 2nd connection part (2nd part)
84A to 84C Thermal insulation space 85 Housing case 86 Opening portion 87 Closure portion 88 Ventilation hole 90 Operation panel 91 Input portion 92 Display portion 93 Substrate box 95 Control substrate (control portion)
96 Microswitch 97 Detection unit 98 Wiring space

Claims (7)

An exterior case having an opening and closing door;
Two or more parts excluding the part where the opening and closing doors are arranged, a cooking chamber defined by walls arranged at intervals inside the exterior case;
A heating unit for heating an object to be cooked disposed in the cooking chamber;
A blower fan that causes the air in the cooking chamber to flow out of the cooking chamber;
A blower fan motor for driving the blower fan;
A cooling fan for supplying cooling air to the blower fan motor;
A cooling fan motor for driving the cooling fan;
A controller that controls the heating unit, the blower fan motor, and the cooling fan motor;
Of the space formed between the outer case and the wall of the cooking chamber, the blower fan and the blower fan motor are arranged in a first arrangement space along the first wall surface of the cooking chamber. And the cooking device which has arrange | positioned the said control part, the said cooling fan, and the said cooling fan motor in the 2nd arrangement | positioning space along the 2nd wall surface different from the said 1st wall surface. A first member arranged in the first arrangement space; a second part arranged in the second arrangement space; and a communication member for guiding cooling air from the cooling fan to the blower fan motor,
The cooking device according to claim 1, wherein the second portion is spaced from the second wall. A first member arranged in the first arrangement space; a second part arranged in the second arrangement space; and a communication member for guiding cooling air from the cooling fan to the blower fan motor,
The cooking device according to claim 1, wherein the first portion is spaced from the first wall. While providing a heating chamber communicating with the cooking chamber on the first arrangement space side of the cooking chamber,
The heating unit and the blower fan are arranged in the heating chamber, the air sucked into the heating chamber from the cooking chamber is heated by the heating unit, and the heated hot air is circulated and supplied to the cooking chamber. The heating cooker of any one of -3.   The cooking device according to claim 4, wherein the second arrangement space is a region extending in a direction orthogonal to a circulation center line of hot air in the cooking chamber circulated by the blower fan. An accommodation case in which the cooling fan motor is arranged inside is arranged in the second arrangement space,
The opening part is provided in the said exterior case side of the said storage case, The ventilation hole connected to the said cooling fan side was provided in the obstruction | occlusion part on the opposite side to the said opening part, The any one of Claims 1-5. Cooking device.   The cooking device according to claim 6, wherein the opening of the housing case extends over the whole area other than a region occupied by a component necessary for the second arrangement space including a substrate box that houses the control unit.

Images