JP2019148402A - Heating cooker - Google Patents

Abstract

To provide a heating cooker which can efficiently recover water falling down from a rear cover.SOLUTION: A heating cooker includes: a heating chamber; an exhaust passage in which steam flows through a hole opened on a rear wall of the heating chamber and which is disposed behind the rear wall; a rear cover which has a vent hole through which the steam flows from the exhaust passage to the outside and is disposed while covering the rear side of the exhaust passage; and a lower frame disposed below the heating chamber. The rear cover has a flange part bent forward at a lower part. The lower frame has a recessed part formed at a rear part. The recessed part is located below a rear end of at least a part of the flange part.SELECTED DRAWING: Figure 12

Description

  The present disclosure relates to a heating cooker that heats food in a heating chamber.

  Conventionally, air heated in the heating chamber of the heating cooker is discharged to the outside through a rear cover attached to the rear portion of the heating cooker from a hole opened in the wall surface of the heating chamber. A heating cooker having such a structure is described in Patent Document 1, for example.

  In patent document 1, the heated air flows out of a heating chamber from the 1st exhaust port in the upper surface of a heating chamber. Thereafter, the air passes through the exhaust path and enters the exhaust duct from the second exhaust port of the exhaust path. The air that has entered the exhaust duct is discharged from the external exhaust port of the exhaust duct to the outside of the main body.

JP 2017-83100 A

  However, when the cooking device is provided with a steam generator or when a large amount of steam comes out of the food to be heated, a large amount of steam is contained in the air exhausted from the heating chamber. When air containing steam is exhausted from the heating chamber, the steam contacting the rear cover is condensed and flows down along the front surface of the rear cover. As a result, water flowing down the rear cover was collected, which caused rust on the metal portion of the cooking device.

  Accordingly, an object of the present disclosure is to solve the above-described problem, and to provide a heating cooker that can efficiently recover water flowing down from the rear cover.

In order to achieve the object, a heating cooker according to one aspect of the present disclosure includes
A heating chamber;
An exhaust passage disposed behind the rear wall through which steam flows through a hole formed in a rear wall of the heating chamber;
A rear cover which has a vent hole through which steam flows from the exhaust path to the outside, and is disposed behind the exhaust path;
A lower frame disposed below the heating chamber;
With
The rear cover has a flange portion bent forward at the lower portion,
The lower frame has a recess formed in the rear part,
The concave portion is located below a lower end of at least a part of the flange portion.

  It is possible to provide a heating cooker that can efficiently collect the water flowing down from the rear cover.

Front perspective view of a heating cooker according to an embodiment Front perspective view of heating cooker with door open Side view of heating cooker with door open Front view of heating cooker with door open Rear perspective view of cooking device Rear perspective view of the cooking device with the casing other than the front frame removed Front view of rear wall of heating chamber with fan case Front perspective view of fan case FIG. 6 is a rear exploded perspective view of the cooking device with the rear cover removed. Rear view of cooking device with rear cover removed Front view of rear cover Enlarged front view around the lower part on one side in the longitudinal direction of the rear cover Partial perspective view which shows the recessed part of one side in the longitudinal direction of a lower frame The figure which looked inward from the section of one side in the longitudinal direction of the lower frame Enlarged front view around the lower part on the other side in the longitudinal direction of the rear cover The partial perspective view which shows the recessed part of the other side in the longitudinal direction of a lower frame The figure which looked inward from the section of the other side in the longitudinal direction of a lower frame

  According to one aspect of the present disclosure, a steam flows through a heating chamber, a hole formed in a rear wall of the heating chamber, and an exhaust passage disposed behind the rear wall. A rear cover disposed to cover the rear of the exhaust path and a lower frame disposed below the heating chamber, the rear cover being folded forward at the lower portion It is a heating cooker which has a flange part, the said lower frame has a recessed part formed in the rear part, and the said recessed part is located under the lower end of at least one part of the said flange part.

  The flange portion may have a guide portion that guides water to the concave portion.

  In addition, the flange portion may be formed directly below a region of the rear cover that faces the exhaust path in a front view of the rear cover.

  The concave portion has a bottom wall and a side wall forming a concave shape, the side wall of the concave portion includes a part of an outer wall of the lower frame, and the side wall of the concave portion is the portion of the concave portion. It extends below the bottom wall.

(Embodiment)
Below, the heating cooker which concerns on embodiment of this indication is demonstrated with reference to FIGS. 1-4. Drawing 1 is a front perspective view of cooking-by-heating machine 1 concerning an embodiment. FIG. 2 is a front perspective view of the cooking device 1 with the door 7 opened. FIG. 3 is a side view of the cooking device 1 with the door 7 opened. FIG. 4 is a front view of the cooking device 1 with the door 7 opened. In the following description, the X direction is the longitudinal direction (width direction) of the heating cooker 1, the Y direction is the front-rear direction, and the Z direction is the height direction. Moreover, in the following description, the height refers to the distance from the ground contact surface of the heating cooker 1.

  The heating cooker 1 according to the embodiment of the present disclosure can open and close the housing 3, the heating chamber 5 disposed in the housing 3, and the opening 3 b opened in the front frame 3 a that is the front surface of the housing 3. And a covering door 7. The heating chamber 5 is formed by being surrounded by an upper wall 5a arranged at the upper part, side walls 5b and 5c arranged at both sides, a rear wall 5d arranged at the rear part, and a bottom wall 5e arranged at the lower part. Space. The heating chamber 5 is provided with a microwave radiation port for radiating microwaves. The object to be heated (food) placed in the heating chamber 5 is dielectrically heated by the microwave radiated from the microwave radiation port. Further, a steam outlet is provided in the upper part of the heating chamber 5, and steam can be supplied into the heating chamber 5.

  The door 7 is attached to the casing 3 so as to be openable and closable at the horizontal rotation center below the opening 3b. When the user pulls the handle 7a attached to the upper part of the door 7, the heating chamber 5 is opened by rotating the door 7 so as to be in a horizontal state. Moreover, the heating chamber 5 is closed by rotating the door 7 so as to be in a vertical state.

  The door 7 is provided with a display unit 9 and an operation unit 11 on one side in a front view. The display unit 9 is a liquid crystal screen, for example, and displays a menu screen or the like. The operation unit 11 is, for example, a push button or a dial. The user gives various cooking instructions to the heating cooker 1 using the operation unit 11.

  Below the housing 3, a first tray 13 and a second tray 15, which are coupled to the lower end of the housing 3 and are detachable in the front-rear direction, are disposed on a lower frame 49. The first tray 13 and the second tray 15 are arranged side by side in the longitudinal direction. For example, the first tray 13 is disposed on one side (left side) in the longitudinal direction, and the second tray 15 is disposed on the other side (right side) in the longitudinal direction. The first tray 13 is, for example, a tray for collecting water droplets condensed in the heating cooker 1. The second tray 15 accommodates a water supply tank (not shown) for supplying water to the steam generator 16.

  Reference is now made to FIG. FIG. 5 is a rear perspective view of the cooking device. A rear cover 6 is disposed on the rear side of the heating cooker 1. An exhaust duct 29 is attached to the upper portion of the rear cover 6.

  Reference is now made to FIG. FIG. 6 is a rear perspective view of the heating cooker 1 with the housing 3 other than the front frame 3a removed. A heat insulating metal plate is attached to the outside of the upper wall 5a and the side walls 5b and 5c of the heating chamber. FIG. 6 shows a metal plate 12a attached to the outside of the upper wall 5a and a metal plate 12c attached to the outside of the side wall 5c. The rear cover 6 has vent holes 6 a and 6 b that communicate the interior of the rear cover 6 and the exhaust duct 29, and a vent hole 6 c that communicates the metal plate 12 a of the heating chamber 5 and the exhaust duct 29.

  Further, the lower end of the front frame 3 a is connected to the bottom plate 37. A space between the bottom wall 5 e of the heating chamber 5 and the bottom plate 37 is used as the machine chamber 30. The machine room 30 includes a drive mechanism that drives each function of the cooking device 1, a magnetron (not shown) that generates microwaves, a magnetron drive power source (not shown) that supplies power to the magnetron, A control unit (not shown) for controlling the wave generation operation and the like is arranged. The machine room 30 is provided with a cooling fan (not shown) for cooling them.

  Cooling air from the cooling fan flows from below to above along the metal plate 12c and the metal plate attached to the side wall 5c. The cooling air flows rearward along the metal plate 12a and flows into the exhaust duct 29 through the vent hole 6c. In addition to this flow, the cooling air from the machine room 30 also flows inside the rear cover 6.

  Reference is now made to FIGS. FIG. 7 is a front view of the rear wall 5d of the heating chamber 5 to which the fan case 21 is attached. FIG. 8 is a front perspective view of the fan case 21. A fan 17 is disposed behind the rear wall 5d. Further, the rear wall 5 d has a plurality of intake holes 19 and exhaust holes 20 that are opened to circulate the air in the heating chamber 5 by the fan 17. Further, a vent hole 33 is provided on the other side in the longitudinal direction of the rear wall 5d to allow the air in the heating chamber 5 to pass through the exhaust passage 31 disposed behind the heating chamber 5.

  The fan case 21 includes a recess 21a that rotatably supports the fan 17, and a flat portion 21b that rises from the recess 21a and is formed around the recess 21a. The fan case 21 covers the back of the circulation fan 17. The fan case 21 is attached to the rear wall 5 d of the heating chamber 5.

  A sheathed heater 23 is disposed in the recess 21 a along the rotation direction of the fan 17. When the fan 17 is driven to rotate, the air in the heating chamber 5 is sucked from the intake hole 19. The sucked air is heated by the sheathed heater 23 and returns to the heating chamber 5 through the exhaust hole 20. The fan 17 and the sheathed heater 23 constitute a convection heater.

  Legs 24 are attached to the lower ends of both sides of the fan case 21. The height of the lower end of each leg 24 is the same as the height of the lower end of the front frame 3a. A water receiving portion 27 that guides water that is condensed and falls is attached to the lower portion of the fan case 21. The water receiver 27 extends in the longitudinal direction of the fan case 21.

  As shown in FIG. 8, an exhaust cylinder 35 is formed on the other side of the fan case 21. The exhaust cylinder 35 is located behind the vent hole 33. When the fan case 21 is attached to the rear wall 5d of the heating chamber 5, a part of the rear surface of the rear wall 5d is configured as the front surface of the exhaust pipe 35. An exhaust path 31 is formed by the exhaust cylinder 35.

  Reference is now made to FIGS. FIG. 9 is a rear exploded perspective view of the cooking device with the rear cover of FIG. 6 removed. FIG. 9 shows the rear surface of the fan case 21. FIG. 10 is a rear view of the cooking device with the rear cover removed. FIG. 11 is a front view of the rear cover 6. In FIG. 11, the arrows shown on the rear cover 6 indicate the flow of steam. The rear cover 6 includes a recess 6d that faces the fan 17 with the fan case 21 interposed therebetween, and a flat portion 6k that rises from the recess 6d and surrounds the recess 6d. Ventilation holes 6a and 6b are formed in the upper wall 6e serving as the upper side surface of the recess 6d. A vent 6c is formed in the upper part of the flat part 6k.

  Most of the steam rising from the upper opening 35 a opened at the upper end of the exhaust cylinder 35 flows to the exhaust duct 29 through the vent hole 6 a of the rear cover 6. However, a part of the steam is cooled by coming into contact with the rear cover 6 and becomes water droplets. Since the rear cover 6 is in contact with the outside air, the temperature is lower than in the heating chamber 5, and the steam is cooled, so that condensation is likely to occur. Therefore, water droplets are likely to be generated in the region 6 h of the rear cover 6 that faces the exhaust cylinder 35 that forms the exhaust path 31. A part of the steam flowing from the upper opening 35 a of the exhaust cylinder 35 flows from the other side to the one side along the upper wall 6 e of the recess 6 d of the rear cover 6 and flows from the vent hole 6 b to the exhaust duct 29. Also here, a part of the steam is condensed by flowing below the vent holes 6 b and coming into contact with the rear cover 6.

  Thus, condensation is likely to occur on both sides of the recess 6d of the rear cover 6. In particular, in the rear cover 6, the region 6 h facing the exhaust path 31 (exhaust cylinder 35) and the region around the inside thereof are likely to condense. Therefore, as shown in FIG. 11, a first flange portion 6f and a second flange portion 6g extend from the lower portions of both side portions of the recess 6d. The first flange portion 6 f extends from the lower portion on one side of the rear cover 6. The second flange portion 6 g extends from the lower portion on the other side of the rear cover 6. In particular, the second flange portion 6g extends from the region 6h of the rear cover 6 and a lower portion directly below the region inside the rear cover 6 when the rear cover 6 is viewed from the front.

  Reference is now made to FIG. FIG. 12 is an enlarged front view around the lower part on one side in the longitudinal direction of the rear cover 6. The first flange portion 6f is bent forward from the lower portion of the rear cover 6 along the lower edge portion. Further, the first flange portion 6f has a guide portion 6fa that guides water that has flowed down to one side inward. The guide portion 6fa is formed, for example, by folding a sharp tip portion extending toward one side of the first flange portion 6f inward along the front edge portion and overlapping the same.

  Water droplets condensed on the front surface on one side of the recess 6d flow down downward along the recess 6d by its own weight. Since the rising portion at the lower part of the recess 6d is gently inclined downward, water droplets smoothly flow from the recess 6d to the flat part 6k and reach the first flange part 6f.

  Reference is now made to FIGS. FIG. 13 is a partial perspective view showing a concave portion on one side in the longitudinal direction of the lower frame 49. FIG. 14 is a view of the lower frame 49 viewed inward from a cross section on one side in the longitudinal direction.

  The lower frame 49 has a first recess 49 a that stores water immediately below the first flange portion 6 f of the rear cover 6. The first recess 49a is formed by an outer wall 49b of the lower frame, a side wall 49c rising from the lower portion of the lower frame 49, and a bottom wall 49d that connects the outer wall 49b and the side wall 49c in the horizontal direction. The outer side wall 49b, the side wall 49c, and the bottom wall 49d are integrally formed as a part of the lower frame 49, respectively.

  Since the 1st recessed part 49a of the lower frame 49 is arrange | positioned directly under the 1st flange part 6f, the water which fell from the 1st flange part 6f can be received by the 1st recessed part 49a. The water accumulated in the first recess 49a is removed by evaporation by natural drying.

  The 1st recessed part 49a is not arrange | positioned directly under the outer front-end | tip part of the guide part 6fa of the 1st flange part 6f. However, since the water flowing through the guide portion 6fa is guided inward and reaches directly above the first recess 49a, it can be accommodated in the first recess 49a. Therefore, since the first flange portion 6f includes the guide portion 6fa, it is possible to improve the degree of freedom of arrangement of the first recess 49a.

  The lower end of the first flange portion 6f may be inserted into the first recess 49a. The height of the lower end of the first flange portion 6f may be lower than the upper end of the first recess 49a. With this configuration, water falling from the first flange portion 6f can be reliably accommodated in the first recess 49a.

  The bottom wall 49d of the first recess 49a is positioned higher than a part of the outer wall 49b and the lower end of the side wall 49c, which serve as the side wall of the first recess 49a. Thus, the bottom wall 49d of the second recess 49e is located at a position higher than a part of the outer wall 49b and the lower end of the side wall 49g, which becomes the side wall of the first recess 49a. It functions as a rib and can maintain the strength of the lower frame 49 in which the second recess 49e is formed.

  Reference is now made to FIG. FIG. 15 is an enlarged front view around the lower part on the other side in the longitudinal direction of the rear cover 6. The second flange portion 6g is bent forward from the lower portion of the rear cover 6 along the lower edge portion. Moreover, the 2nd flange part 6g has the guide part 6ga which guides the water which flowed down to the other end side inside. The guide portion 6ga is formed, for example, by folding a sharp tip portion extending to the other side of the first flange portion 6f inwardly along the front edge portion and overlapping it.

  The water droplets condensed on the front surface on the other side of the recess 6d flow down downward along the recess 6d by its own weight. Since the rising portion at the bottom of the recess 6d is gently inclined downward, the water droplets smoothly flow from the recess 6d to the flat portion 6k and reach the second flange portion 6g.

  Reference is now made to FIGS. FIG. 16 is a partial perspective view showing the concave portion on the other side in the longitudinal direction of the lower frame 49. FIG. 17 is a view of the lower frame 49 viewed from the other side in the longitudinal direction.

  The lower frame 49 has a second recess 49 e that stores water immediately below the second flange portion 6 g of the rear cover 6. The second recess 49e is formed by an outer wall 49b of the lower frame 49, a side wall 49g rising from the lower part of the lower frame 49, and a bottom wall 49h connecting the outer wall 49b and the side wall 49g in the horizontal direction. The outer side wall 49b, the side wall 49c, and the bottom wall 49h are integrally formed as a part of the lower frame 49, respectively.

  Since the 2nd recessed part 49e of the lower frame 49 is arrange | positioned directly under the 2nd flange part 6g, the water which fell from the 2nd flange part 6g can be received by the 2nd recessed part 49e. The water accumulated in the second recess 49e is removed by evaporation by natural drying.

  The 2nd recessed part 49e is not arrange | positioned directly under the outer front-end | tip part of the guide part 6ga of the 2nd flange part 6g. However, since the water flowing through the guide portion 6ga is guided inward and reaches directly above the second recess 49e, it can be accommodated in the second recess 49e. Therefore, since the second flange portion 6g has the guide portion 6ga, the degree of freedom of the arrangement of the second recesses 49e can be improved.

  The lower end of the second flange portion 6g may be inserted into the second recess 49e. The height of the lower end of the second flange portion 6g may be lower than the upper end of the second recess 49e. With this configuration, water falling from the second flange portion 6g can be reliably accommodated in the second recess 49e.

  The bottom wall 49d of the second recess 49e is positioned higher than a part of the outer wall 49b and the lower end of the side wall 49g, which are the side walls of the second recess 49e. Accordingly, the bottom wall 49d of the second recess 49e is located at a position higher than a part of the outer wall 49b and the lower end of the side wall 49g, which serves as a side wall of the second recess 49e. It functions as a rib and can maintain the strength of the lower frame 49 in which the second recess 49e is formed.

  The heating cooker 1 includes a heating chamber 5 and an exhaust path 31 disposed behind the rear wall 5d through which steam flows through a vent 33 formed in the rear wall 5d of the heating chamber 5. The heating cooker 1 has a vent 6a through which steam flows from the exhaust passage 31 to the outside, a rear cover 6 disposed so as to cover the rear of the exhaust passage 31, and a lower frame disposed below the heating chamber. 49. The rear cover 6 has a second flange portion 6g bent forward at the lower portion. The lower frame 49 has a second recess 49e formed in the rear part. A second recess 49e is positioned below the lower end of at least a part of the second flange portion 6g. From this configuration, the following effects can be obtained.

  The steam in the heating chamber 5 escapes from the exhaust path 31 to the vent hole 6a of the rear cover 6, but a part of the steam comes into contact with the rear cover 6 and is cooled to form water droplets. The water drops fall down along the rear cover 6. The second flange portion 6g formed at the lower portion of the rear cover 6 is bent forward. Further, since the second concave portion 49e is present on the lower extension of the lower end portion of the second flange portion 6g, water drops falling along the rear cover 6 fall from the lower end of the second flange portion 6g to the second concave portion 49e. To do. Thereby, water droplets condensed on the rear cover 6 can be collected in the second recess 49e formed in the lower frame 49.

  The second flange portion 6g has a guide portion 6ga that guides water to the second recess 49e. Since the second flange portion 6g has a guide portion 6ga for guiding water to the second recess portion 49e, water flowing through a portion where the second recess portion 49e is not positioned below the lower end of the second flange portion 6g is also directed to the second recess portion 49e. I can guide you. Therefore, a wide range of water droplets on the rear cover 6 can be guided to the second recess 49e.

  Further, the second flange portion 6g is formed directly below the region 6h of the rear cover 6 that faces the exhaust passage 31 in the front view of the rear cover 6. The area 6h of the rear cover 6 that faces the exhaust path 31 through which the steam flows is an area where the steam that has come out of the exhaust path 31 is cooled and water droplets are easily formed. In the front view of the rear cover 6, since the second flange portion 6g is disposed directly below the region 6h, water droplets can be efficiently collected into the second recess 49e.

  The second recess 49e has a bottom wall 49d that forms a concave shape, a part of the outer wall 49b, and a side wall 49g. The bottom wall 49d of the second recess 49e serves as a side wall of the second recess 49e. And it exists in a position higher than the lower end of the side wall 49g. As a result, the bottom wall 49d of the second recess 49e is positioned higher than a part of the outer wall 49b that forms the side wall of the second recess 49e and the lower end of the side wall 49g. It functions as a rib and can maintain the strength of the lower frame 49 in which the second recess 49e is formed.

  The present disclosure is not limited to the above embodiment, and can be modified as follows.

  In the said embodiment, although guide part 6fa, 6ga was formed by folding the sharp part, it is not restricted to this. For example, a groove may be provided instead of the folded structure, and the flowing water may be guided along the groove to the recess.

  In addition, it can be made to show the effect which each has by combining suitably any embodiment among the said various embodiment and modifications.

  Although the present disclosure has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as included within the scope of the present disclosure as set forth in the appended claims. In addition, combinations of elements and changes in the order in each embodiment can be realized without departing from the scope and spirit of the present disclosure.

  The heating cooker according to the present disclosure is useful as, for example, a high-frequency heating cooker, a high-frequency heating cooker with a steam generator, or a high-frequency heating cooker with a heater.

DESCRIPTION OF SYMBOLS 1 Heating cooker 3 Case 3a Front frame 3b Opening 5 Heating chamber 5a Upper wall 5b, 5c Side wall 5d Rear wall 5e Bottom wall 6 Rear cover 6a Vent hole 6b Vent hole 6c Vent hole 6d Recessed part 6e Upper wall 6f 1st flange part 6fa guide portion 6g second flange portion 6ga guide portion 6h region 6k flat portion 7 door 7a handle 9 display portion 11 operation portion 12a, 12c metal plate 13 first tray 14 water supply tank 15 second tray 15a water storage portion 16 steam generator 17 Fan 19 Intake hole 20 Exhaust hole 21 Fan case 21a Recessed part 21b Flat part 23 Seed heater 24 Leg part 25 Flange part 27 Water receiving part 29 Exhaust duct 30 Machine room 31 Exhaust path 33 Vent hole 35 Exhaust cylinder 35a Upper opening 35b Lower opening 37 Bottom plate 49 Lower frame 49a First recess 49b Outer side wall 49c Side wall 49d Bottom wall 9e second recess 49g sidewall 49h bottom wall

Claims (4)

A heating chamber;
An exhaust passage disposed behind the rear wall through which steam flows through a hole formed in the rear wall of the heating chamber;
A rear cover that has a vent hole through which steam flows from the exhaust passage and is disposed to cover the rear of the exhaust passage;
A lower frame disposed below the heating chamber;
With
The rear cover has a flange portion bent forward at the lower portion,
The lower frame has a recess formed in the rear part,
The concave portion is located below the lower end of at least a part of the flange portion,
Cooking cooker. The flange portion has a guide portion for guiding water to the concave portion,
The cooking device according to claim 1. The flange portion is formed directly below the rear cover region facing the exhaust passage in the front view of the rear cover.
The cooking device according to claim 1 or 2. The concave portion has a bottom wall and a side wall forming a concave shape,
The side wall of the recess includes a portion of the outer wall of the lower frame;
The side wall of the recess extends below the bottom wall of the recess,
The heating cooker according to any one of claims 1 to 3.

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