JP2012177525A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker capable of discharging air outside a heating container and air including vapor inside the heating compartment and mixing them without using any sirocco fan.SOLUTION: The heating cooker includes a first compartment-outside ventilation port 3b for guiding compartment-outside air fed into a body case by a compartment-outside cooling fan motor to the outside, a compartment-inside ventilation port 3c disposed side by side with the first compartment-outside ventilation port 3b and configured to guide compartment-inside air fed into a heating compartment 7 by a compartment-inside cooling fan motor to the outside, and an exhaust cover 61a disposed on the backside of the body case to cover the first compartment-outside ventilation port 3b and the compartment-inside ventilation port 3b. The exhaust cover 61a includes a separator plate 63a for separating the compartment-outside air and the compartment-inside air passed through the first compartment-outside ventilation port 3b and the compartment-inside ventilation port 3c, respectively, and a compartment-inside air exhaust port 62d and a compartment-outside air exhaust port 62e for discharging and mixing the compartment-outside air and the compartment-inside air separated by the separator plate 63a.

Description

  The present invention relates to a cooking device having a magnetron, for example.

  The conventional heating cooker stirs and mixes the steam guided from the discharge port of the heating chamber through the discharge passage into the exhaust duct with the air blown from the blowout port of the sirocco fan, and obliquely upwards toward the front. It is discharged (see, for example, Patent Document 1).

Japanese Patent No. 4398814 (page 13, FIG. 7)

  However, in the above-described conventional cooking device, in order to sufficiently stir and mix steam and air, the size of the exhaust duct becomes large and a sirocco fan is necessary.

  The present invention has been made to solve the above-described problems, and without using a sirocco fan, a heating cooker that discharges and mixes air outside the heating chamber and air containing steam inside the heating chamber. The purpose is to provide.

  A cooking device according to the present invention includes a main body case, a heating chamber disposed in the main body case, and a first fan motor that sucks outside air and sends the outside air into the space between the main body case and the heating chamber as outside air. And a second fan motor that sucks outside air and sends it into the heating chamber as inside air, and is provided on the back surface of the main body case, and guides outside air sent to the space by the first fan motor to the outside. An outside air vent, and an inside air vent that is provided alongside the outside air vent on the back of the main body case, and that guides the air inside the chamber sent into the heating chamber by the second fan motor, A main body exhaust device provided on the back surface of the main body case so as to cover the outer vent and the inner vent, and the main body exhaust device includes the outdoor air passing through the outer vent and the inner vent, and The amount of air that forms the exhaust air passage And means, and a separate exhaust air path to the exhaust port to be mixed with discharged outside-compartment air and the internal air passing through each by a separation means.

  According to the present invention, the outside air and the inside air passing through the outside vent and the inside vent provided on the back surface of the main body case are separated by the separating means, and each separated air is discharged from the exhaust port. Therefore, the internal air having a temperature higher than that of the external air can be lowered by the external air without using a sirocco fan.

It is a perspective view which shows the external appearance of the heating cooker which concerns on embodiment. It is a perspective view which shows the inside of the heating cooker which concerns on embodiment. It is a perspective view which decomposes | disassembles and shows the back case of the heating cooker of FIG. It is a schematic diagram of the cross section which cut | disconnects and shows the front side of the heating cooker of FIG. It is the front view, sectional drawing, and bottom view which expand and show the main body exhaust apparatus of the heating cooker which concerns on embodiment. It is a perspective view which shows the flow of the cooling air from a side inlet port and a lower inlet port to a 1st exterior ventilation port in the heating cooker of embodiment. It is a perspective view which shows the flow of the air in a store | warehouse | chamber in a heating cooker of embodiment from a side inlet and a lower inlet to an interior vent. It is a perspective view which shows the flow of the cooling air discharged | emitted from an upper exhaust part and the air in a warehouse following FIG. 6 and FIG.

Hereinafter, embodiments of a heating cooker according to the present invention will be described with reference to the drawings. First, the structure of the heating cooker of this Embodiment is demonstrated using FIGS. 1-4.
1 is a perspective view showing the appearance of a heating cooker according to the embodiment, FIG. 2 is a perspective view showing the inside of the heating cooker according to the embodiment, and FIG. 3 is an exploded rear case of the heating cooker of FIG. FIG. 4 is a schematic cross-sectional view of the cooking device shown in FIG.

  In the figure, the cooking device according to the present embodiment is applied to, for example, a microwave oven, and includes a main body case 1 provided with a rear case 3 at the rear and a door 2 provided rotatably at the front of the main body case 1. It has. A handle 4 is attached to the upper center of the door 2, and an operation panel 5 having a display unit 5 a is provided on one side of the front surface of the door 2. The upper frame 3p of the back case 3 is provided with an exhaust port of a main body exhaust device 6 to be described later, and the side frame 3q on one side of the back case 3 has a side portion formed of a plurality of rectangular holes. An intake port 3a is provided.

  As shown in FIG. 3, the back case 3 described above includes a first back plate 3g that covers the back of the main body case 1 and a second back plate 3d that is joined to the first back plate 3g with a space. It consists of and. The first back plate 3g is provided with a rectangular recess 3h having substantially the same size as a back plate 7e of the heating chamber 7 described later. When the heating chamber 7 is attached to the first back plate 3g, it is fixed by screwing so as to cover the recess 3h. In that case, a gap exists between the back plate 7e of the heating chamber 7 and the recess 3h.

  The upper surface of the first back plate 3g is provided with a first rectangular outer vent 3b and an inner vent 3c extending in the lateral direction, and a rectangular shape extending in the vertical direction on the left side. The second outside vent 3i is provided. An upper suction port 3k and a lower suction port 3l made up of a plurality of punch holes are provided on the right side surface of the first back plate 3g, and the recess 3h of the first back plate 3g extends in the lateral direction. The outside vent hole 3j is provided.

  The second back plate 3d has an upper frame 3p and a side frame 3q that are bent at right angles to the first back plate 3g. The upper frame 3p of the second back plate 3d is provided with a notch 3e for projecting the exhaust port cover 62a of the main body exhaust device 6. The second back plate 3d is provided with a plate-like partition plate 3f on the side frame body 3q side where the side air inlet 3a is provided. When the back case 3 is configured by combining the first back plate 3g and the second back plate 3d, a lower intake port 3m and a lower exhaust port 3n are formed with the partition plate 3f as a boundary.

  In the main body case 1, as shown in FIGS. 2 and 4, a rectangular box heating chamber 7 having a front opening is provided. The front opening of the heating chamber 7 is opened and closed by the door 2 described above. A heat insulating material 8 that covers the mica heater 17 and the mica heater 17 is attached to the upper surface plate 7 c of the heating chamber 7. The mica heater 17 is a planar heating element for heating an object to be heated stored in the heating chamber 7 from above. The side plate 7d on one side of the heating chamber 7 is provided with an in-chamber supply port 7a made up of a plurality of punch holes, and an in-house exhaust port 7b made up of a plurality of punch holes is provided at the rear part of the upper surface plate 7c. ing. The internal exhaust port 7 b and the above-described internal air vent 3 c are communicated with each other through an exhaust duct 16.

  Moreover, as shown in FIG. 4, the back plate 7e of the heating chamber 7 is provided with a suction port 22 and a blow-out port 23 each made up of a plurality of punch holes. The suction inlet 22 and the blower outlet 23 are connected with the convection unit 7g provided in the outer side of the backplate 7e of the heating chamber 7 (refer FIG. 3). The convection unit 7g is composed of a convection fan disposed opposite to the suction port 22 and a convection heater disposed opposite to the air outlet 23. The convection fan is rotatably connected to a motor installed at the bottom of the main body case 1 through a belt. The air in the heating chamber 7 is sucked from the suction port 22 by the convection fan, the air is heated to a high temperature by the convection heater, the hot air is blown out from the outlet 23, and hot air is circulated to heat the object to be heated in the heating chamber 7. To do.

  The outside cooling fan motor 9 (first fan motor) provided adjacent to the heating chamber 7 is such that the suction side faces the upper suction port 3k provided on the first back plate 3g of the back case 3. is set up. On the air blowing side of the outside cooling fan motor 9, an outside air supply duct 10 in which a power supply board 11 is installed is provided. The outside cooling fan motor 9 cools the power supply board 11, the control board 12 installed on the bottom of the main body case 1, and the surroundings of the heating cabinet 7.

  The inside cooling fan motor 13 (second fan motor) installed below the outside cooling fan motor 9 is opposed to the lower suction port 3l provided on the first back plate 3g of the back case 3 on the suction side. It is installed as follows. On the air blowing side of the internal cooling fan motor 13, an internal air supply duct 15 connected to the internal air supply port 7 a of the heating chamber 7 via the magnetron 14 is provided. The internal cooling fan motor 13 cools the magnetron 14 and exhausts air in the heating chamber 7 (air containing steam) from the internal exhaust port 7b.

  A sheathed heater 18 that heats an object to be heated stored in the heating chamber 7 from below is provided below the bottom plate 7 f of the heating chamber 7. Further, a rotating antenna 19 and an antenna motor 20 that rotates the rotating antenna 19 are installed with the center of the sheathed heater 18 as a substantially axial center. A waveguide 21 for propagating the microwave oscillated from the magnetron 14 to the rotating antenna 19 is provided below the bottom plate 7 f of the heating chamber 7. The microwave is radiated into the heating chamber 7 by the rotating antenna 19 to heat the object to be heated.

Next, the configuration of the main body exhaust device 6 will be described with reference to FIG.
FIG. 5: is the front view, sectional drawing, and bottom view which expand and show the main body exhaust apparatus of the heating cooker which concerns on embodiment.
The main body exhaust device 6 includes an exhaust cover 61a, an exhaust port cover 62a provided on the upper portion of the exhaust cover 61a, and a separator plate 63a as a separating means.

  The exhaust cover 61a has substantially the same length as the width of the recess 3h provided in the first back plate 3g, has a cross section formed in an unequal mountain shape, and is provided with side plates 61b at both ends thereof. One rectangular opening 61d is provided in a portion of the short side plate 61c (horizontal side) of the exhaust cover 61a on the exhaust port cover 62a side. The exhaust port cover 62a protrudes upward from the short side plate 61c of the exhaust cover 61a so as to cover the opening 61d described above, and one rectangular opening 62b is provided on the first back plate 3g side. ing. The opening 62b is inclined backward as it goes upward from the short side plate 61c. The opening 62b is provided with a plurality of ribs 62c.

  The separator plate 63a is made of, for example, an aluminum material that extends rearward from the rib 62c and is bent downward at a right angle. The separator plate 63a faces the first outside vent 3b provided in the first back plate 3g, and is bent obliquely from the approximate center of the exhaust cover 61a toward the first back plate 3g. The opening 62b of the exhaust port cover 62a is vertically separated by the bent upper end of the separator plate 63a. The upper part is used as an internal air exhaust port 62d, and the lower part is used as an external air exhaust port 62e.

  When the exhaust cover 61a configured as described above is attached to the first back plate 3g from behind, the side plates 61b on both sides of the exhaust cover 61a are placed on top of the recesses 3h of the first back plate 3g, The first outside vent 3b and the inside vent 3c are covered. At that time, the tip of the inclined portion of the separator plate 63a comes into contact with the first back plate 3g on the right side of the first outside vent 3b, and the other side plate 61b of the exhaust cover 61a and the first back plate 3g. The upper portion of the recess 3h covers the first outside-ventilation vent 3b. The separator plate 63a forms an exhaust air passage that communicates the first outside air vent 3b and the outside air exhaust port 62e of the exhaust port cover 62a. Further, the above-described separator plate 63a forms another exhaust air passage that communicates the internal vent 3c and the internal air exhaust 62d of the exhaust cover 62a.

Here, the flow of outside air (cooling air) and inside air when the object to be heated in the heating chamber 7 is heated will be described with reference to FIGS.
FIG. 6 is a perspective view showing a flow of cooling air from the side intake port and the lower intake port to the first outside vent in the heating cooker according to the embodiment, and FIG. 7 is a heating cooker according to the embodiment. FIG. 8 is a perspective view showing the flow of the internal air from the side intake port and the lower intake port to the internal air vent in FIG. 8, and FIG. 8 shows the cooling air discharged from the upper exhaust unit and the storage following FIG. 6 and FIG. It is a perspective view which shows the flow of internal air.

First, the flow of cooling air will be described with reference to FIG.
When the outside air is sucked from the side air inlet 3a and the lower air inlet 3m by driving the outside cooling fan motor 9, the outside air is further sucked from the upper air inlet 3k by the outside air cooling fan motor 9, and the cooling air As a result, the air is introduced into the outside air supply duct 10 and discharged into the main body case 1. At that time, the power supply board 11 installed in the outside air supply duct 10 is cooled, and the control board 12 is cooled.

  One of the cooling air that has cooled the above-described electrical components flows above the heating chamber 7 and the other flows below the heating chamber 7 by the side plate 7 d of the heating chamber 7. The cooling air that has flowed upward reaches the first outdoor vent 3b while cooling the upper portion of the main body case 1 that is warmed by heat radiation from the upper surface plate 7c and the heat insulating material 8 of the heating chamber 7. The cooling air that has flowed downward is pushed up into the space between the main body case 1 and the heating chamber 7 while cooling the bottom of the main body case 1 that is warmed by heat radiation from the bottom plate 7f of the heating chamber 7 and the sheathed heater 18. To the first outdoor vent 3b.

Next, the flow of the internal air will be described with reference to FIG.
When the outside cooling air is sucked from the side air inlet 3a and the lower air inlet 3m by driving the inside cooling fan motor 13, the outside air is further sucked from the lower air inlet 3l by the inside cooling fan motor 13. While being guided into the air supply duct 15 and cooling the magnetron 14, the air flows into the heating chamber 7 from the internal air supply port 7 a. The internal air that has flowed into the heating chamber 7 is discharged from the internal exhaust port 7b together with the vapor released from the object to be heated by the microwave, and passes through the exhaust duct 16 to the internal vent 3c.

Next, the flow of cooling air and internal air discharged from the upper exhaust part 62 to the outside will be described with reference to FIG.
The cooling air reaching the first outside vent 3b flows upward through an exhaust air passage formed by the separator plate 63a of the exhaust cover 61a, the first back plate 3g, and the recess 3h thereof, and the exhaust cover 62a The outside air exhaust port 62e is discharged to the outside obliquely upward.

  On the other hand, the internal air containing the steam reaching the internal air vent 3c flows into the exhaust air passage formed by the exhaust cover 61a, the separator plate 63a, the first back plate 3g, and the recess 3h, and the separator plate 63a. Thus, the air is guided to the internal air exhaust port 62d side, and is discharged to the outside substantially horizontally from the internal air exhaust port 62d. At that time, the internal air containing the steam is mixed with the cooling air exhausted obliquely upward from the external air exhaust port 62e when being exhausted from the internal air exhaust port 62d. When the above-mentioned inside air is hotter than the outside air and is sent into the exhaust cover 61a, the inside air is heat-exchanged with the outside air via the separator plate 63a, and is further discharged from the inside air exhaust port 62d. Since it is mixed with the outside air discharged from the outside air exhaust port 62e at the time, the temperature becomes low.

  The cooling air that has flowed into the space between the main body case 1 and the heating chamber 7 passes through the second outside vent 3i and is discharged to the outside from the lower exhaust port 3n provided in the back case 3. . Furthermore, the cooling air that has flowed above the heating chamber 7 flows into the recess 3h through the gap between the heating chamber 7 and the recess 3h provided in the first back plate 3g of the back case 3, It flows from the third outside vent 3j to the aforementioned lower exhaust 3n.

  As described above, according to the present embodiment, the outside air and the inside air passing through the first outside vent 3b and the inside vent 3c provided on the back surface of the main body case 1 are made of aluminum. The separated outside air is discharged obliquely upward from the outside air exhaust port 62e, and the inside air is discharged almost horizontally from the inside air exhaust port 62d to be mixed. Yes. As a result, without using a sirocco fan as in the prior art described above, the inside air having a temperature higher than the outside air can be exchanged with the outside air through the separator plate 63a, and further, the heat exchanged inside air can be stored in the warehouse. Since it is mixed with the outside air, the inside air discharged from the inside vent 3c can be lowered in temperature.

  In the embodiment, it is described that an aluminum material is used for the separator plate 63a. However, the present invention is not limited to this, and heat exchange between high-temperature internal air and cooling air (outside air) is performed efficiently. Any material may be used as long as it is.

  DESCRIPTION OF SYMBOLS 1 Main body case, 2 Doors, 3 Back case, 3a Side inlet, 3b 1st exterior vent, 3c Interior vent, 3d 2nd back plate, 3e Notch, 3f Partition plate, 3g 1st Back plate, 3h recess, 3i second outside vent, 3j third outside vent, 3k upper inlet, 3l lower inlet, 3m lower inlet, 3n lower outlet, 3p upper frame, 3q side frame, 4 handle, 5 operation panel, 6 main body exhaust device, 61a exhaust cover, 61b side plate, 61c short side plate, 61d opening, 62a exhaust port cover, 62b opening, 62c rib, 62d Exhaust port, 62e External air exhaust port, 63a Separator plate, 7 Heating chamber, 7a Internal air supply port, 7b Internal exhaust port, 7c Top plate, 7d Side plate, 7e Back plate, 7f Bottom plate, 7g Convex Unit, 8 heat insulating material, 9 outside cooling fan motor, 10 outside air supply duct, 11 power supply board, 12 control board, 13 inside cooling fan motor, 14 magnetron, 15 inside air supply duct, 16 exhaust duct, 17 Mica heater, 18 sheathed heater, 19 rotating antenna, 20 antenna motor, 21 waveguide, 22 inlet, 23 outlet.

Claims (3)

A body case,
A heating chamber disposed in the main body case;
A first fan motor for sucking outside air and sending it as outside air into the space between the main body case and the heating chamber;
A second fan motor that sucks in outside air and sends it into the heating chamber as chamber air;
An outside ventilation port provided on the back surface of the main body case, for guiding outside air sent to the space by the first fan motor to the outside;
An internal ventilation port for guiding the internal air sent into the heating chamber by the second fan motor to the outside, provided alongside the external ventilation port on the back surface of the main body case,
A main body exhaust device provided on the back of the main body case so as to cover the outside vent and the inside vent;
The main body exhaust device is
Separation means for forming an exhaust air passage for outside air and inside air passing through the outside vent and the inside vent, and
A cooking device, comprising: an air outlet that discharges and mixes the outside air and the inside air that have passed through the exhaust air passages separated by the separating unit.   The separation means separates the exhaust port up and down, discharges the outside air passing through the outside ventilation port obliquely upward from the lower part of the exhaust port, and the inside air passing through the inside ventilation port The cooking device according to claim 1, wherein the cooking device comprises a separator plate that horizontally discharges the gas from the upper part of the exhaust port.   The cooking device according to claim 2, wherein the separator plate is made of a metal plate.

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