JP3789053B2 - Cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooking device for cooking an object to be cooked by microwave cooking and hot air circulation.
[0002]
[Prior art]
Conventionally, the configuration of this type of cooker capable of microwave cooking and oven cooking is as shown in the cross-sectional plan view of FIG. There is a machine room 3 that is partitioned adjacent to the side of the cabinet 2, a door 4 that opens and closes is provided at the front opening of the oven cabinet 2, and an operation panel 5 is provided at the front of the machine chamber 3. ing. The machine room 3 is equipped with electrical parts such as a magnetron 6 and a cooling fan 7, and a hot air generating unit 8 for supplying hot air into the interior is provided on the back wall 2 c side of the oven cabinet 2. Yes. The hot air generating unit 8 includes an annular heater 9, a blower fan 10, a fan casing 11, a fan motor 12, and a cooling fan 13 for the motor 12. Therefore, the rear plate 1a of the outer box 1 generates hot air. The unit 8 is configured to protrude rearward in accordance with the rearward protruding portion of the unit 8.
[0003]
Further, on both side walls 2 a and 2 b in the oven cabinet 2, a plurality of shelves 15 are provided so as to store and install a substantially square square plate 14 in a plurality of upper and lower stages. In the state in which 14 is installed, the side walls 2a and 2b of the oven cabinet 2 are in a state where the square plate 14 is placed on the shelf 15 and is almost closed in the vertical direction, and the hot air generating unit 8 is The rear wall 2c, which is disposed and is the hot air supply side, is closed in order to secure the hot air circulation path to be described later by abutting the peripheral edge of the square plate 14, and communicates vertically only on the inner surface of the front door 4. The gap 16 is configured.
[0004]
Thus, as shown in FIG. 12, the back wall of the oven chamber 2 is arranged so that the hot air supplied from the hot air generating unit 8 is distributed in the chamber partitioned by the square plates 14 housed and installed in the oven chamber 2. The upper air outlet 17a, the suction inlet 17b, and the lower air outlet 17c, each having a group of three through holes, are formed in 2c.
[0005]
Therefore, when cooking an object (not shown) accommodated in each square plate 14 in the oven, the hot air generated from the hot air generating unit 8 is formed in the direction of the arrow shown in FIG. The hot air is supplied into the oven chamber 2 from the forward direction 17c, and the hot air reaches the inner surface of the door 4 which is the front surface of the oven chamber 2 through the gap 16, and returns to the fan casing 11 from the suction port 17b at the intermediate position. A one-way hot air circulation is performed in which the heater 9 is reheated and turned into hot air, and the object to be cooked is heated and cooked in the hot air atmosphere of the hot air circulation path, so-called oven cooking is performed.
[0006]
[Problems to be solved by the invention]
According to the above configuration, the hot air generation unit 8 has a relatively large axial dimension between the blower fan 10 and the fan motor 12 that drives the hot fan generation unit 8 because the fan casing 11 and the cooling fan 13 are interposed. Therefore, in the configuration in which such a unit 8 is arranged on the back side, the rear plate 1a of the outer box 1 naturally needs a locally protruding shape that allows this, and as a result, the depth dimension Z of the product that is a heating cooker is The volume ratio of the oven cabinet 2 was worsened while increasing the installation area. Further, the protruding shape of the rear plate 1a of the outer box 1 is not good in appearance, the material cost increases as the outer dimension of the product increases, and further, the oven cabinet 2 is used for wiring such as lead wires. In this case, a long section of wiring from the hot air generating unit 8 located at the back of the machine to the electrical components in the machine room 3 and the operation panel 5 on the front side is required, which increases the material cost and the wiring work. It was.
[0007]
In addition, since the so-called hot air circulation path from the supply of hot air to the interior to the return is long in one direction, heat is easily transferred to the outside air in the middle of the door 4 side. The hot air in the vicinity of the return inlet 17b at the end of the circulation contains a lot of moisture, and a considerable temperature drop is inevitable. As a result, heating unevenness is likely to occur, and the hot air circulation efficiency is not necessarily good. It was.
[0008]
  The present invention has been made in view of the above circumstances. Therefore, the object of the present invention is to reduce the outside dimension, reduce the installation area, and increase the effective internal volume ratio.It is possible to circulate hot air effectivelyTo provide a cooking device that can.
[0009]
[Means for Solving the Problems]
  In order to achieve the above object, a heating cooker according to the present invention includes an oven formed in an outer box and having an opening / closing door at a front opening, and an electrical component adjacent to the side of the oven.Or cooling fanA machine room in whichPlaced in this machine roomA magnetron for microwave cooking of an object to be cooked in the oven cabinet and a hot air generating unit for cooking the oven by hot air circulation, the hot air generating unitAnd the magnetron are spaced apart on the side of the machine room on the side wall of the oven cabinet, of which the hot air generating unit is disposed near the front door in the machine room, the magnetron is disposed on the back side, and the hot air blowing unit Oriented to the back of the oven(Invention of claim 1).
[0010]
  According to such a configuration, the space of the machine room can be effectively used as the arrangement location of the hot air generating unit, and the cooling action for the unit as the heat source can also be used as a cooling fan for cooling other electrical components in the machine room. It is possible to further reduce the size of the machine room as much as possible, or at least to increase the size of the machine room to a minimum. The internal volume ratio can be increased, and the rear surface portion of the product has no protruding shape and the appearance design is improved. In addition, since most of the electrical components such as the hot air generating unit are concentrated on the machine room side, the wiring process between these electrical components and the operation panel can be performed efficiently, and the material cost can be reduced.
  In a more specific configuration, the hot air generating unit and the magnetron are both attached to the side wall of the oven cabinet, so that the assembling process can be simplified and the working efficiency can be improved, and the hot air generating unit disposed near the front door. Since the hot air is supplied toward the back side of the oven chamber, it is effective for circulating the hot air throughout the interior of the oven, and the supplied hot air is not directly blown to the front door. It is also effective in suppressing heat from escaping.
[0015]
  Moreover, the oven store | warehouse | chamber of the side facing a hot-air production | generation unit in the state which formed the shelf part of several steps in the both-side wall in an oven cabinet in the thing of Claim 1 and accommodated the square plate in each shelf part A hot air passage communicating in the vertical direction is formed between the side wall and the peripheral edge of the square dish (claims).2Invention).
[0016]
According to such a configuration, since the hot air passage is formed on the side wall opposite to the hot air supply side, the main hot air circulation path can be configured to effectively circulate the hot air in the warehouse.
[0017]
  And claims2In the description, the hot air passage is formed by forming a recessed portion extending in the vertical direction in the oven side wall.3Invention).
  According to such a configuration, when the oven chamber is made of metal, the recessed portion can be easily formed by drawing, and the shelf portion of the side wall has a form in which the midway portion is cut off. A hot air passage communicating in the vertical direction is formed between the square plate and the recessed portion of the side wall so that hot air circulation can be ensured.
[0018]
  And further claims2In the description, the hot air passage has a configuration in which a punching portion is formed on the side wall of the oven cabinet in the vertical direction and the punching portion is covered from the back side.4Invention).
[0019]
According to such a configuration, the punching portion constituting the hot air passage can be formed over a wide range, and its punching area can be easily changed, so that a desired hot air flow rate can be easily obtained and reliable hot air can be obtained. Circulation is obtained.
[0020]
  Claims2Thru4In any one of the above, a hot air passage made up of a gap communicating vertically is formed between the door side inner surface and the back wall side inner surface of the oven cabinet and the peripheral edge of the square plate. Term5Invention).
[0021]
According to such a configuration, hot air passages are formed in three directions excluding the hot air supply side having the hot air generating unit, and the upper and lower sides from both sides of the door side and the rear wall side with respect to the hot air circulation on the main opposing wall side, respectively. As the hot air in the direction circulates, the hot air returning from the hot air circulation path, which tends to decrease in temperature, is still sent with high-temperature hot air to suppress the temperature drop and wrap the food to be cooked in the square dish Since hot air can be supplied to the oven, there is no unevenness in heating, and the finish can be cooked in a good oven.
[0022]
  And claims5In the description, the hot air passage on the back side of the oven cabinet forms a protrusion projecting inwardly on the back wall of the oven cabinet, and a square plate housed in the cabinet comes into contact with the projection and its peripheral portion A gap is formed between the inner wall and the back wall (claim)6Invention).
[0023]
According to such a configuration, only by inserting the square dish into the oven cabinet, a predetermined storage positioning of the square dish and a gap as a hot air passage can be ensured by contact with the protrusion.
[0024]
  Furthermore, according to claim 1, a plurality of shelves for storing and installing the square dishes in a plurality of upper and lower stages in the oven cabinet are integrally drawn on both side walls of the oven cabinet, and of these, the machine room The entire shelf part of the side wall is covered with a heat insulating plate from the back side (characterized in claim).7Invention).
[0025]
According to such a configuration, it is possible to suppress heat conduction to the square dish through the shelf on the side wall using the hot air generating unit as a heat source, and accordingly the square dish becomes a high temperature state and inhibits the finish of the cooking object. And the troublesomeness of handling a square dish in a high temperature state can be eliminated.
[0026]
  And claims7In the description, the hot air generating unit is attached via a heat insulating plate (invention of claim 8).
[0027]
According to such a configuration, unnecessary heat conduction between the hot air generation unit and the side wall of the oven cabinet is suppressed, and the unit is attached and held in a so-called double wall structure of the side wall and the heat insulating plate, so that it is solid. It can be done with a simple configuration.
[0028]
  Furthermore, in the thing of Claim 1, it has a multi-stage shelf part for storing and installing a square plate in a plurality of upper and lower stages on both side walls of the oven cabinet, and at least the shelf part on the machine room side is garnished. It is formed of a heat insulating member such as ceramic (claim)9Invention).
[0029]
According to such a configuration, heat conduction to the square dish can be effectively suppressed with a simple configuration in which only the shelf is formed of a heat insulating member.
[0030]
  The hot air generating unit according to claim 1 further includes a heater, a blower fan, a fan casing containing the heater and the fan, and a fan motor. The hot air generating unit is provided between the fan casing and the fan motor. A thermal cover member is interposed (claim)10Invention).
[0031]
According to such a configuration, it is possible to effectively suppress an increase in the temperature of the machine room as well as a nearby fan motor due to heat from the fan casing with a built-in heater.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, a first embodiment showing a heating cooker according to the present invention will be described with reference to FIGS. 1 to 5.
First, FIG. 2 shows an external perspective view of the heating cooker 21 in the opened state. In the outer box 22, a metal oven 23 opened on the front surface and a machine adjacent to the right side of the oven 23 are shown. A chamber 24 (see FIG. 1) is partitioned and a door 25 having a transparent window 25a is provided at the front opening of the oven chamber 23 so as to be openable and closable. An operation panel 26 is provided on the front surface corresponding to the machine chamber 24. Is provided.
[0033]
FIG. 1 shows a schematic cross-sectional structure of the heating cooker 21. As will be described in conjunction with FIG. 2, the left and right side walls 23a and 23b of the oven cabinet 23 have, for example, two stages in the vertical direction. Of the left side wall 23a, in particular, as shown in an enlarged view in FIG. 4, a concave portion 28 extending in the vertical direction is drawn at a substantially central portion. Therefore, the shelf 27 formed on the side wall 23a has a shape in which the central portion is cut off.
[0034]
As shown in FIGS. 1 and 5, a substantially square metal square plate 29 is opened on the front surface of the oven cabinet 23 on the upper surface of the two-stage shelf 27 formed on the side walls 23 a and 23 b as described above. It is installed more slid. In this stored and installed state, positioning is performed by the square plate 29 coming into contact with the back wall 23c of the oven cabinet 23, but the peripheral edge of the square plate 29 and the inner surface of the back wall 23c communicate in the vertical direction. A gap 30 as a hot air passage is formed, and in the present embodiment, substantially the entire surface is drawn into a recessed portion shape leaving a part in contact with the square plate 29 at the left and right ends of the back wall 23c, There is also a gap 31 as a hot air passage between the inner surface of the door 25 facing the back wall 23c and the peripheral edge of the square plate 29, and the gap 31 acts to avoid collision with the door 25 that opens and closes. It also has. Therefore, the concave portion 28 formed in the left side wall 23a also functions as a hot air passage communicating in the vertical direction with the square plate 29 installed, and as can be understood from FIG. In the three inner surfaces excluding the right side wall 23b, a configuration in which hot air passages communicating with the square plate 29 in the vertical direction are formed is obtained.
[0035]
By the way, the right side wall 23b of the oven cabinet 23 adjacent to the machine room 24 is composed of a group of through holes that are divided into three in the vertical direction with a square plate 29 installed in two steps as shown in FIG. From the upper stage, an upper outlet 32a, an inlet 32b and a lower outlet 32c are formed in front of the door 25. And the hot air generation | occurrence | production unit 33 is equipped using the space by the side of the machine room 24 corresponding to these through-hole groups. That is, the unit 33 includes a heater 34 formed of an annular sheathed heater, a centrifugal blower fan 35 disposed inside the heater 34, and a fan motor 36 that rotationally drives the fan 35. The blower fan 35 is covered with a fan casing 37 surrounding the group of through holes, and the fan motor 36 is attached to a motor mounting plate 38 provided on the casing 37.
[0036]
Therefore, when the hot air generating unit 33 is energized and driven, the blower fan 35 is rotationally driven and is blown centrifugally outward in the radial direction while sucking air from the suction port 32b corresponding to the substantially central portion thereof. It is configured to be heated and supplied as hot air into the oven chamber 23 from the upper and lower outlets 32a and 32c. In this embodiment, the hot air supplied from the air outlets 32a and 32c is set to flow toward the back side of the oven chamber 23 as shown by an arrow in FIG. It is easy to impart directivity to the flow by the rotation direction of 41 or the shape of the air outlets 32a and 32c and the fan casing 37.
[0037]
Further, in the machine chamber 24, as shown in FIG. 3, a magnetron 39 is attached to the side wall 23b at the back side of the hot air generating unit 33, and communicates with the oven chamber 23 (not shown). The microwave is transmitted through the excitation port. A printed circuit board 40 for controlling the inverter is disposed below the magnetron 39, and cooling fans 41 and 42 are provided behind the printed circuit board 40 and the magnetron 39, respectively. A part of the air blown by 42 is sent into an intake duct 43 communicating with the inside of the oven cabinet 23. The air blown by the cooling fan 41 cools the printed circuit board 40 and then is branched by a guide member 44 erected on the fan casing 37, and one side is used for cooling the hot air generating unit 33, particularly the fan motor 36. The other is used for cooling the operation panel 26 and the like, and is discharged to the outside of the machine, and generally constitutes a function of cooling the inside of the machine room 24.
[0038]
In the heating cooker 21 of the present embodiment configured as described above, for example, when cooking in an oven such as a cookie or a roll, an object to be cooked (dough) is placed and placed on two square dishes 29, This is housed and installed in the oven chamber 23 until it comes into contact with both ends of the back wall 23c so as to slide on each shelf 27 provided in two upper and lower stages. After the door 25 is closed, a setting operation such as menu selection is performed by the operation panel 26, and a start operation is performed.
[0039]
As a result, the heater 34 and the fan motor 36 of the hot air generation unit 33 are energized, and the hot air generated by the rotational drive of the blower fan 35 flows in the direction indicated by the arrows in FIGS. That is, the air in the oven chamber 23 is taken into the fan casing 37 from the suction port 32b of the side wall 23b, is heated by the heater 34 in the casing 37, and becomes hot air, and from the lower outlets 32a and 32c on the side wall 23b. It is supplied into the oven chamber 23. Among these, the hot air from the upper outlet 32a flows in the upper space of the upper plate 29 toward the side wall 23a, which is the opposite wall, while being slightly directed to the interior of the cabinet, and reaches the side wall 23a as a hot air passage. , And flows into the fan casing 37 through the suction port 32b of the side wall 23b, is heated by the heater 34, and is heated into hot air. So-called hot air circulation is performed. On the other hand, the hot air from the lower outlet 32c flows through the lower space of the lower square plate 29, reaches the recessed portion 28, and circulates upward to perform hot air circulation in the same manner as described above.
[0040]
However, in this embodiment, a so-called hot air passage having a gap 30 on the back side of the inner surface of the oven cabinet 23 and a gap 31 on the inner surface of the front door 25 in a state where the square plate 29 is housed and installed is configured. Therefore, a part of the hot air flows also from the gaps 30 and 31, the hot air on the upper surface of the upper square plate 29 flows downward, and the hot air on the lower surface of the lower rectangular plate 29 flows upward. As a result, Hot air is supplied between the upper and lower square plates 29 from the side wall 23a side facing the side wall 23b having the hot air generating unit 33, the back wall 23c side and the front door 25 side. Correct the temperature drop phenomenon at the end of the return side and obtain hot air circulation without heating unevenness.
[0041]
In this way, the food to be cooked accommodated in the square dish 29 is uniformly heated by the hot air supplied into the oven chamber 23 and is oven-cooked. During the oven cooking, at least the cooling fan 41 is driven, and is divided by the printed circuit board 40 and the guide member 44 by the cooling air to cool the hot air generating unit 33 and the operation panel 26 side mainly. The cooling action in 24 is performed.
[0042]
As described above, according to the present embodiment, the hot air generating unit 33 for performing the oven cooking is installed in the machine room 24 that houses and arranges the electrical parts such as the magnetron 39, so that the space of the machine room 24 can be effectively used. Since the cooling fan 41 provided for cooling various electrical components in the machine room 24 can be used for cooling the fan motor 36 of the hot air generating unit 33, a cooling fan dedicated to the fan motor that has been conventionally required. Can be provided at low cost, and the dimension in the axial direction can be reduced accordingly, so that the size of the machine room 24 can be reduced to at least the same size as that of the prior art, or at least to increase in size. . In addition, the protruding shape of the rear surface of the product as the conventional cooking device 21 is eliminated, the appearance is improved, and the depth dimension Z1 is greatly reduced as compared with the conventional one. Since the size can be greatly reduced, it is possible to provide the cooking device 21 having a large volume ratio in the oven 23.
[0043]
The hot air generating unit 33 is disposed on the side of the oven chamber 23 and is provided near the front door 25 in the machine room 24, and the magnetron 39 is spaced apart on the back side behind the machine room 24. While utilizing the space skillfully, the hot air blowing direction from the hot air generating unit 33 is directed to the inner side of the interior, which is effective in preventing escape of heat from the door 25 side. In addition, as a hot air circulation path in the warehouse, a gap 30 as a hot air passage communicating in the vertical direction with the other three sides excluding the right side wall 23b on the hot air supply side into the oven warehouse 23 as compared to the conventional one-way property. 31 and the recessed portion 28 are provided, so that hot hot air can still be sent through the gaps 30 and 31 to the temperature lowering area on the hot air return side, so that the temperature unevenness in the entire hot air circulation path in the warehouse is eliminated. Hot air can be supplied so as to wrap the food, so that there is no uneven heating, and oven cooking with a good finish can be achieved.
[0044]
6 to 10 show the second to fifth embodiments of the present invention with respect to the above configuration, and the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted. Only the different parts will be described.
[0045]
(Second Embodiment)
FIG. 6 shows a second embodiment of the present invention. Instead of the recessed portion 28 formed in the side wall 23a facing the hot air generating unit 33 as the hot air passage in the first embodiment, in this embodiment, the side wall 23a A punching portion 45 is formed in the vertical direction. That is, the punching part 45 is a communication hole 45a composed of a plurality of through-hole groups formed corresponding to the interior compartment divided into three by the square plate 29 stored and installed in the upper and lower two stages in the oven warehouse 23. , 45b, 45c, and the side wall 23a is covered with an outer plate 46 from the back, and an internal space 47 is formed in the interior to communicate between the communication holes 45a, 45b, 45c. Accordingly, the upper and lower communication holes 45a and 45c are opposed to the hot air supply side wall 23b and the lower outlets 32a and 32c, respectively, and the intermediate communication hole 45b is opposed to the suction port 32b. It is in.
[0046]
In the second embodiment having the above-described configuration, when cooking in the oven, the hot air heated by the hot air generating unit 33 is supplied into the cabinet from the upper and lower outlets 32a and 32c on the side wall 23b and communicates with the opposing side wall 23a. After flowing into the space 47 from the holes 45a and 45c, hot air circulation is performed in which the air is returned from the communication hole 45b at the intermediate position to the inside of the cabinet and heated in the fan casing 37 through the suction port 32b. And substantially the same hot air circulation path is formed. Therefore, in this embodiment, hot air circulation is also added by the hot air passage on the side wall 23a side where the punching portion 45 is provided and the hot air passage made up of the gaps 30 and 31 on the other back wall 23c side and the door 25 side, The hot air spreads quickly throughout the entire chamber, and the hot air is supplied so as to wrap the food contained in the square plate 29 so that the cooking can be performed without uneven heating.
[0047]
As described above, in this embodiment, the same effect as the first embodiment can be obtained, and in this embodiment, the punching portion 45 can be formed in a wide range of the side wall 23a. It is advantageous in that a desired hot air flow rate can be easily set by changing the hole diameter.
[0048]
(Third embodiment)
In the third embodiment shown in FIG. 7, in contrast to the configuration in which the gap 30 is drawn on the back wall 23c side as the hot air passage in the first embodiment, the present embodiment projects inwardly into the back wall 23c. The difference is that an appropriate number of protrusions 48 are formed, that is, by forming the protrusions 48 locally corresponding to the installation height of the square plate 29 stored in the warehouse, When the plate 29 abuts, the storage position of the square plate 29 is determined, and at the same time, a predetermined gap 49 communicating vertically between the peripheral edge portion and the back wall 23c is secured, thereby functioning as a hot air passage. It is what I did.
In this embodiment as well, the same effects as those of the first embodiment are achieved.
[0049]
(Fourth embodiment)
FIGS. 8 and 9 show a fourth embodiment of the present invention. In particular, the present invention relates to a heat shield structure for the heater 34 of the hot air generating unit 33, and the drawing is performed on the side wall 23b to which the hot air generating unit 33 is attached. A rectangular heat insulating plate 50 including the entire area of the rear surface of the upper and lower two-tier shelf 27 is applied from the rear surface, and is fastened and fixed with screws 51 so as to be sandwiched by the fan casing 37. As shown in a part of the part, the protruding tip of the screw 51 is placed in the recess on the back surface of the shelf 27. Of course, the plate body 50 is formed with openings 50a, 50c, and 50b each including a size corresponding to each of the hot air outlets 32a and 32c and the suction port 32b. Is not disturbed.
Furthermore, a heat insulating cover member 52 is provided between the fan casing 37 and the fan motor 36 by an appropriate fixing means so as to cover the fan casing 37 with a gap. You may make it divert a means.
[0050]
In the fourth embodiment having the above-described configuration, the hot air generating unit 33 is provided in the machine room 24 on the side of the oven cabinet 23, which eliminates the concern, that is, the side wall 23b is positioned near the heater 34 during oven cooking. And heated to the square plate 29 made of a metal plate through the respective shelves 27 of the side wall 23b, and the object to be cooked contained therein is burned more than necessary, or the corner in a high temperature state after cooking. A concern arises that the handling of the dish 29 is troublesome. However, according to the present embodiment, since the heat insulating plate 50 having a size that covers the entire area of the shelf 27 from the back is provided, heat conduction to the shelf 27 as well as the side wall 23b is suppressed, and the square plate 29 is moved to. Can reduce the thermal effects.
[0051]
In addition, the fan casing 37 containing the heater 34 together with the blower fan 35 is also brought into a high temperature state by the heater 34, and in particular, the thermal adverse effect on the adjacent fan motor 36 and the temperature rise in the machine room 24 are promoted. In this embodiment, since the heat-insulating cover member 52 is attached so as to cover the fan casing 37, the above-described thermal influence can be eliminated, and the fan motor 36 is not affected. As described in the first embodiment, it can be dealt with by the cooling action by the other cooling fan 41 and can contribute to the reduction of the cooling fan dedicated to the motor 36 as in the prior art. Therefore, according to the present embodiment, not only can the thermal effect caused by the heater 34 associated with the configuration in which the hot air generating unit 33 is disposed on the side of the machine room 24 on the side of the oven chamber 23 be dealt with without any problem, Various features of installing the unit 33 on the machine room 24 side can be utilized. Furthermore, by providing the heat insulating plate 50, a so-called double wall structure is formed together with the side wall 23c, and a configuration in which the hot air generating unit 33 is attached and held thereon can be firmly provided.
[0052]
(Fifth embodiment)
FIG. 10 shows a fifth embodiment of the present invention, which is at least a hot air generating unit in this embodiment compared to the shelves 27 provided on both side walls 23a and 23b of the oven cabinet 23 in the fourth embodiment. The shelf portion 53 of the side wall 23b on the machine room 24 side provided with 33 is formed by a heat insulating member such as an insulator or ceramic, and is attached and fixed.
[0053]
According to such a configuration, the heat conduction from the heater 34 to the square plate 29 as described in the fourth embodiment is effectively cut off with a simple configuration of only the shelf portion 53 of the heat insulating member. Can be effectively avoided against the thermal effects as described above.
The present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope not departing from the gist of the present invention.
[0054]
【The invention's effect】
  As described above, the present invention provides a hot air generating unit that supplies hot air into the oven chamber.Along with magnetron and cooling fanBy placing it on the side of the machine room on the side of the oven cabinet, you can effectively use the space of the machine room,The cooling action of the unit can also be used as a cooling fan, which is effective for downsizing.In addition, since a part of the rear plate of the outer box does not protrude rearward as in the conventional case, the interior volume ratio can be increased with a small installation area, the appearance design is improved, and further, the wiring process is performed in the machine room. Simple.
  In a more specific configuration, the hot air generating unit and the magnetron are both attached to the side wall of the oven cabinet, so that the assembling process can be simplified and the working efficiency can be improved, and the hot air generating unit disposed near the front door. Since the hot air is supplied toward the back side of the oven chamber, it is effective for circulating the hot air throughout the interior of the oven, and the supplied hot air is not directly blown to the front door. It is possible to provide a heating cooker having a practical effect such as being effective in suppressing the escape of heat thermally.
[Brief description of the drawings]
FIG. 1 is a cross-sectional plan view showing a first embodiment of the present invention.
FIG. 2 is an external perspective view of the door open state.
FIG. 3 is a side view showing the configuration of the machine room by breaking the outer box.
FIG. 4 is an enlarged perspective view showing a part of the oven cabinet.
FIG. 5 is an explanatory diagram of a hot air circulation path
FIG. 6 is a cross-sectional view of the main part showing a second embodiment of the present invention.
FIG. 7 is a schematic longitudinal sectional view showing a third embodiment of the present invention.
FIG. 8 is a cross-sectional view of an essential part showing a fourth embodiment of the present invention.
FIG. 9 is a cross-sectional view at a different position partially enlarged.
FIG. 10 is a view corresponding to FIG. 8 showing a fifth embodiment of the present invention.
11 is a view corresponding to FIG. 1 showing a conventional example.
FIG. 12 is a diagram corresponding to FIG.
[Explanation of symbols]
21 is a heating cooker, 22 is an outer box, 22a is a rear plate, 23 is an oven cabinet, 23a and 23b are side walls, 23c is a back wall, 24 is a machine room, 25 is a door, 26 is an operation panel, and 27 and 53 are Shelf, 28 is a recessed portion (hot air passage), 29 is a square plate, 30, 31, 49 are gaps (hot air passage), 32a and 32c are upper and lower outlets, 32b is a suction port, 33 is a hot air generating unit, 34 is a heater, 35 is a blower fan, 36 is a fan motor, 37 is a fan casing, 39 is a magnetron, 41 and 42 are cooling fans, 45 is a punching portion, 45a, 45b and 45c are communication holes, 48 is a protrusion, 50 Indicates a heat insulating plate, and 52 indicates a cover member.

Claims (10)

And the oven chamber having a door in the front opening portion formed in the outer box, and a machine chamber of the electrical components and the cooling fan is adjacent to the side of the oven chamber is disposed, the machine room is disposed within said oven chamber A magnetron for microwave cooking of the object to be cooked and a hot air generation unit for oven cooking by hot air circulation, the hot air generation unit and the magnetron are provided separately on the machine room side of the oven cabinet side wall, Among them, the hot air generating unit is disposed near the front door in the machine room, the magnetron is disposed on the back side, and the hot air blowing direction from the hot air generating unit is directed to the back side in the oven chamber. Cooking device. A plurality of shelf sections are formed on both side walls in the oven cabinet, and a square dish is stored and installed in each shelf section, between the oven cabinet side wall on the side facing the hot air generating unit and the square dish periphery. The cooking device according to claim 1, wherein a hot air passage communicating in the vertical direction is formed . The cooking device according to claim 2 , wherein the hot air passage is formed with a recessed portion extending in the vertical direction in the oven side wall . The cooking device according to claim 2 , wherein the hot air passage has a configuration in which a punching portion is formed in a vertical direction on the side wall of the oven cabinet and the punching portion is covered from the back surface . The hot air passage which consists of the gap | interval which respectively communicates up and down was formed between the door side inner surface and back wall side inner surface of an oven cabinet, and a square-plate periphery part , Each of Claim 2 thru | or 4 characterized by the above-mentioned. Cooker. The hot-air passage on the back side of the oven cabinet forms a protrusion projecting inwardly on the back wall of the oven cabinet, and a square dish stored in the cabinet abuts on the projection so that the peripheral edge and the back wall The cooking device according to claim 5 , wherein a gap is formed between the cooking devices. Multi-stage shelves for storing and installing square dishes in upper and lower stages in the oven cabinet are integrally drawn on both side walls of the oven cabinet, of which the entire shelf on the side wall on the machine room side is insulated from the back. The cooking device according to claim 1 , wherein the cooking device is covered with an insulating plate . The cooking device according to claim 7 , wherein the hot air generating unit is attached via a heat insulating plate . Having a multi-stage shelf on both side walls of the oven cabinet to store and install square dishes in multiple upper and lower stages, and of these, at least the machine room side shelf was formed of a heat insulating material such as insulator or ceramic The cooking device according to claim 1. Hot air generation unit, the heater, blowing fan, the fan casing having a built-in these heaters and fans, and comprises a fan motor, and this interposed cover member for a thermal barrier between the fan casing and a fan motor The cooking device according to claim 1, wherein the cooking device is a cooking device.

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