JP2000121061A - Heater/cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heater/cooker having a function for kneading a food in which a motor for turning dish, and the like, can be cooled sufficiently although a structure provided with a driving section fixing plate is employed. SOLUTION: The heater/cooker comprises a heating/cooking chamber 2 and a machine chamber 3 in the body 1, a high frequency heating means 4 and an electric heating means, a motor 10 for rotary driving a rotary dish, and a container 13 receiving a hood to be kneaded. A drive shaft section 15 for rotary driving a container shaft 14 penetrating the bottom of the container 13 is disposed coaxially with the rotary shaft 11 of the motor 10 for the rotary dish, and a motor 16 for rotary driving the drive shaft section 15 through a rotation transmitting mechanism 17 is disposed in a machine room 3. The drive shaft section 15, the rotation transmitting mechanism 17 and the motor 16 for the drive shaft section are fixed to a driving section fixing plate 21. A cooling fan is disposed at a rear part in the machine room 3, side wall parts 24 are provided at the front and rear end parts of the driving section fixing plate 21 and a vent 24a is made through the rear side wall parts 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker having a function of heating a food at a high frequency, a function of heating the food electrically, and a function of kneading the food.

[0002]

2. Description of the Related Art Conventionally, a microwave oven having a function of kneading food has been added. In this type of microwave oven, a kneading container can be set in the cooking chamber by replacing with a rotating plate. The kneading blades (empellers) provided at the bottom in the container are connected to a drive shaft provided concentrically with the rotation shaft of the rotating dish motor (RT motor) at the bottom of the cooking chamber. , And is configured to be driven to rotate. The drive shaft part is
It is configured to be rotationally driven via a rotation transmission mechanism by a drive shaft motor provided in the machine room.

The drive shaft, the drive shaft motor, and the belt transmission mechanism are mounted on a drive mounting plate.
Further, the drive unit mounting plate is disposed so as to extend from the outer bottom of the cooking chamber to the bottom of the machine room.

[0004]

The drive unit mounting plate of the above-mentioned conventional construction is a substantially duct-shaped member having a U-shaped cross section, and has a structure that substantially partitions the bottom in the machine room back and forth. The driving unit mounting plate is configured to cover the motor for the rotating dish, the weight sensor, and the like. For this reason, the cooling air sent from the cooling fan device provided in the machine room is blocked by the drive unit mounting plate having the above-described shape and does not reach the rotating dish motor or the like. Has not been able to be cooled sufficiently.

In the case of a considerably old type microwave oven, the drive unit mounting plate is present because the volume of the machine room is large and the gap between the bottom plate of the cooking chamber and the bottom plate of the main unit is large. However, the cooling performance of the motor for the rotating dish and the like was not significantly impaired. However, in a recent microwave oven, since the volume of the machine room is small and the gap between the bottom plate of the heating cooking chamber and the bottom plate of the main body is small, a problem of poor cooling caused by the driving unit mounting plate occurs. It became so.

Accordingly, an object of the present invention is to provide a function for kneading food, a structure including a drive shaft, a rotation transmitting mechanism, and a drive mounting plate for mounting a motor for the drive shaft. An object of the present invention is to provide a cooking device capable of sufficiently cooling a motor and the like.

[0007]

Means for Solving the Problems A cooking device according to the present invention comprises:
A main body, a cooking chamber provided in the main body, a machine room provided on the side of the cooking chamber in the main body, a high-frequency heating means for high-frequency heating food in the cooking chamber, Electric heating means for heating the food in the cooking chamber, a rotating dish removably provided in the cooking chamber for placing the food, a rotating dish motor for rotating the rotating dish, and A container which is detachably mounted in place of the rotating dish and holds a food for kneading, a container shaft provided through the bottom of the container for kneading the food, and a device for rotating and driving the container shaft. A drive shaft portion provided coaxially with a rotation shaft of the rotating dish motor, a drive shaft portion motor provided in the machine room and driving the drive shaft portion to rotate via a rotation transmission mechanism, The drive shaft, the rotation transmission A driving unit mounting plate for mounting a mechanism and the motor for the driving shaft unit, a cooling fan device provided in the machine room behind the driving unit mounting plate to generate cooling air, and the driving shaft unit in the driving unit mounting plate It is characterized in that it has side walls provided at the front and rear ends of the portion where the motor for mounting is provided, and ventilation holes provided on the rear side wall among the side walls.

According to the above configuration, the ventilation holes are provided in the side wall provided at the rear end of the drive shaft mounting portion of the drive unit mounting plate, so that the cooling fan device at the rear of the machine room can be used. The blown cooling air passes through the ventilation holes and enters the inside of the driving unit mounting plate, and is guided by the driving unit mounting plate to reach the rotating dish motor and the like. This makes it possible to sufficiently cool the rotating dish motor and the like.

Further, in the case of the above configuration, a mounting hole for positioning and mounting the end of the driving unit mounting plate on the side of the driving shaft to the bottom of the cooking chamber is provided at the end of the driving shaft.
Preferably, a mounting hole for adjusting the position of the drive unit mounting plate on the drive shaft portion motor side at the bottom of the main body so as to be position-adjustable is provided at the drive shaft portion motor side end or the bottom portion of the main body. .

It is preferable that the motor for the drive shaft is disposed at the front of the machine room, and the electric heating means is disposed at the back of the cooking chamber. Furthermore,
It is a good configuration to arrange the motor for the drive shaft at the front part in the machine room and to arrange the high-frequency heating means at the center in the front-rear direction in the machine room. On the other hand, it is also preferable to provide a weight sensor for detecting the weight of the food in the rotating dish motor. Further, it is more preferable to provide a side wall portion for wind guide at a front end portion of the driving portion mounting plate.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a microwave oven will be described below with reference to the drawings. First, FIG. 1 is a vertical front view of a microwave oven, and FIG. 2 is a cross-sectional view of the microwave oven. These FIGS. 1 and 2
As shown in FIG. 1, the microwave oven according to the present embodiment includes an outer box 1 as a main body, and a cooking chamber 2 provided inside the outer box 1. The front opening of the cooking chamber 2 is configured to be opened and closed by a door (not shown). A machine room 3 is provided on the right side of the cooking chamber 2 in the outer box 1.

A high frequency heating means, for example, a magnetron 4 is provided in a central portion of the machine room 3 in the front-rear direction. The microwave oscillated from the magnetron 4 is supplied into the cooking chamber 2 via the waveguide 5, so that the food contained in the cooking chamber 2 is heated at a high frequency. .

In addition, at the back of the cooking chamber 2 in the outer box 1, for example, a hot air supply device 6 which is an electric heating means is disposed. The hot air supply device 6 includes a heater 7 and a fan device 8, and air (hot air) heated by the heater 7 is heated by the fan device 8 into the cooking chamber 2.
It is constituted so that it may circulate into the inside. By such a circulating supply of the hot air, the food housed in the cooking chamber 2 is electrically heated.

Further, as shown in FIG. 6, a rotating plate 9 on which food is placed is detachably provided at the bottom of the cooking chamber 2. The rotating dish 9 is configured to be rotationally driven by a rotating dish motor 10 disposed on the outer bottom of the cooking chamber 2. In this case, the rotating shaft 11 of the rotating dish motor 10 protrudes into the cooking chamber 2 through a through hole 12 a formed in the bottom plate 12 of the cooking chamber 2, and rotates at the tip of the rotating shaft 11. A fitting recess formed in the center of the lower surface of the plate 9 is fitted and connected so as to rotate integrally.

The rotary dish motor 10 has a built-in weight sensor (not shown) for detecting the weight of food. The weight sensor is configured to detect the weight of the food placed on the rotating plate 9 based on the detection of the load applied to the rotating shaft 11.

As shown in FIG. 1, a container 13 for holding food for kneading is detachably mounted in the cooking chamber 2 in place of the rotating plate 9. A container shaft 14 for kneading food (bread dough, rice cake and the like) is penetrated and rotatably provided at the bottom 13 a of the container 13. At the upper end of the container shaft 14, a kneading blade 14a for kneading food is provided. An annular connecting portion 14b is provided at a lower end portion of the container shaft 14, and the connecting portion 14b is an upper end portion of a driving shaft portion 15 provided coaxially with the rotating shaft 11 of the rotating dish motor 10. Is connected so as to rotate integrally with the connecting portion 15a. In this case, for example, a plurality of protrusions are formed on the upper surface of the connecting portion 15a, and a plurality of recesses that fit with the plurality of protrusions are formed on the lower surface of the connecting portion 14b. Are fitted so that the drive shaft 15 and the container shaft 14 rotate integrally.

The drive shaft 15 has a large-diameter gear 15b.
And a hollow gear having an annular connecting portion 15a, through which the rotating shaft 11 of the rotating dish motor 10 is rotatably inserted. The drive shaft section 15 is configured to be rotationally driven via a rotation transmission mechanism 17 by a drive shaft section motor 16 disposed in the machine room 3.

The rotation transmission mechanism 17 is specifically constituted by a belt transmission mechanism, and the drive shaft motor 1
Pulley 18 attached to the tip of the rotary shaft 16a
And a gear portion 19 that meshes with the gear portion 15b of the drive shaft portion 15.
a pulley 19 having a, and a belt 20 wound around these pulleys 18 and 19.

An annular leg 13b is provided on the outer bottom of the container 13, and the leg 13b is placed and fixed on the bottom plate 12 of the cooking chamber 2. In this case, the leg 13b is made of iron, and a magnet (not shown) is arranged on the bottom plate 12 side of the cooking chamber 2. Thus, when the leg 13b is placed on the bottom plate 12 of the cooking chamber 2, the leg 13b is fixed to the bottom plate 12 by suction by the magnet.

The drive shaft 15, the rotation transmitting mechanism 17, and the drive shaft motor 16 are mounted on a drive mounting plate 21. As shown in FIGS. 3 to 5, the drive unit mounting plate 21 has a substantially U-shaped cross section, and includes a flat board portion 22 that is obliquely bent and an upper and lower portion of the board portion 22 in FIG. It has side walls 23 and 24 that are bent at right angles to the ends (that is, the front and rear ends). As shown in FIG. 5, for example, four ventilation holes 24a are formed in the rear side wall portion 24 of the two side wall portions 23 and 24. Further, the bottom plate 2 of the outer box 1 is provided on the side wall portions 23 and 24.
5 are formed with leg plate portions 23b and 24b for screwing, for example.

Then, the substrate portion 2 of the driving portion mounting plate 21
The drive shaft motor 16 is attached to the upper surface of the right end of the second unit 2 by, for example, screws. The rotation shaft 16a of the drive shaft motor 16 projects downward through a through hole 22a formed at the right end of the substrate 22, and a pulley 18 is attached to the projection. Further, a through hole 22b is formed at the left end of the substrate portion 22 of the drive portion mounting plate 21, and the connecting portion 15a of the drive shaft portion 15 is rotatably inserted into the through hole 22b. Further, a pulley 19 is rotatably disposed near the drive shaft 15 on the lower surface of the substrate 22. A gear portion 15b of the drive shaft portion 15 is provided between the pulley 19 and the substrate portion 22.
Are arranged so as to be sandwiched.

A mounting hole 22c for screwing the left end of the driving unit mounting plate 21 to the bottom plate 12 of the cooking chamber 2 is formed at the left end of the base end 22. In this case, the left end of the drive unit mounting plate 21 is connected to the bottom plate 1 of the cooking chamber 2.
2 and a connecting portion 1 of the drive shaft portion 15.
In a state in which the base plate 5 a is rotatably inserted into the through hole 22 b of the base plate 22, for example, four screws 26 (see FIG. 1) are inserted through the mounting holes 22 c of the base plate 22, and To secure. Thereby, the drive unit mounting plate 2
The left end portion 1 is accurately positioned and attached to the bottom plate 12 of the cooking chamber 2.

The rotary dish motor 10 is attached to the drive section mounting plate 21 via a mounting member (not shown) with the rotary shaft 11 inserted through the hollow portion of the drive shaft section 15. I have. In this case, since the left end of the drive unit mounting plate 21 is accurately positioned and mounted on the bottom plate 12 of the cooking chamber 2, the connecting portion 15 a of the drive shaft portion 15 passes through the through hole 22 b of the substrate portion 22. The rotating shaft 11 freely rotates inside the hollow portion of the driving shaft portion 15 while rotating freely.

On the other hand, the right end of the drive unit mounting plate 21 is disposed so as to extend rightward and reach the front of the bottom in the machine room 3 and is screwed onto the bottom plate 25 of the outer box 1. ing. In this case, the side wall portions 23, 24 of the drive unit mounting plate 21
Are placed on the bottom plate 25, and screws (not shown) are attached to the bottom plate 2 from outside the bottom plate 25.
5 through an attachment hole (not shown) formed in the leg plate 2.
It is screwed into screw holes 23c, 24c formed in 3b, 24b. The screw holes 23c and 24c are formed in the leg plate portions 23b and 24b by, for example, burring.

Here, the mounting holes formed in the bottom plate 25 are:
The hole is formed with a hole whose diameter is larger than the outer diameter of the shaft portion of the screw. Thus, the end (right end) of the drive unit attachment plate 21 on the side of the drive shaft motor 6 can be attached to the bottom plate 25 of the outer case 1 so that the position can be adjusted to some extent. It should be noted that the large-diameter mounting hole is inserted into the drive unit mounting plate 21.
And the screw holes may be formed in the bottom plate 25 of the outer box 1.

By attaching the drive unit mounting plate 21 as described above, the drive shaft motor 16 is arranged at the front in the machine room 3. As shown in FIG. 2, a cooling fan device 27 for generating cooling air is provided behind the drive unit mounting plate 21 in the machine room 3.
Are arranged. Although not shown, a drive circuit for driving the magnetron 4, the heater 7, the fan motor of each fan device, and the like, a power supply circuit, a control circuit, and the like are disposed in the machine room 3.

In the case of the above configuration, the cooling air sent from the cooling fan device 27 is blown to the magnetron 4 to cool it. The cooling air is blown to the drive shaft motor 16 to cool it. Further, the cooling air enters the driving unit mounting plate 21 through the ventilation holes 24a of the rear side wall 24 of the driving unit mounting plate 21, is guided by the driving unit mounting plate 21, and is rotated by the rotating dish motor 10 ( (E.g., a weight sensor), and is sufficiently cooled. The cooling air cools various components in the machine room 3.

In the above embodiment, the drive unit mounting plate 21
Is attached to the bottom plate 12 of the heating cooking chamber 2, and the end (right end) of the drive unit mounting plate 21 on the drive shaft motor 16 side is attached to the outer box 1. Bottom plate 25
At the time of mounting, the left end portion of the drive unit mounting plate 21 is accurately positioned and mounted on the bottom plate 12 of the cooking chamber 2. In addition, the components such as the cooking chamber 2, the outer box 1, and the drive unit mounting plate 21 have dimensional variations.
Therefore, the right end of the drive unit mounting plate 21 is attached to the bottom plate 2 of the outer box 1.
5, the mounting position may vary to some extent for each product.

On the other hand, in the above-described embodiment, the end (right end) of the drive unit mounting plate 21 on the side of the drive shaft motor 16 is attached to the bottom plate 25 of the outer case 1 so as to be position-adjustable. Was provided on the bottom plate 25 of the outer box 1. For this reason, even if the mounting position of the right end of the drive unit mounting plate 21 varies to some extent for each product, the variation can be absorbed.

In the above embodiment, the drive shaft motor 16 is provided at the front of the machine room 3 and the hot air supply device 6 is provided at the back of the cooking chamber 2. According to this configuration, since the drive shaft motor 16 and the hot air supply device 6, which are relatively heavy components, are arranged in a well-balanced manner in the front and rear, the weight balance of the entire microwave oven can be improved.

Further, in the above-described embodiment, the drive shaft motor 16 is disposed at the front of the machine room 3 and the magnetron 4 is disposed at the center of the machine room 3 in the front-rear direction. did. According to this configuration, the magnetron 4, which is a relatively heavy component, is disposed at the center in the front-rear direction, so that the weight balance is improved. Moreover,
According to the above configuration, the cooling air sent from the cooling fan device 27 is preferably blown to the magnetron 4, and the air blown to the magnetron 4 is well blown to the drive shaft motor 16. And the cooling air flow in the machine room 3 is improved.

Further, in the above embodiment, since the weight sensor for detecting the weight of the food is provided in the rotating dish motor 10, the weight sensor can be sufficiently cooled together with the rotating dish motor 10. Further, in the above-described embodiment, since the side wall portion 23 for wind guide is provided from the right end to the left end at the front end of the drive unit mounting plate 21, the drive unit mounting plate 21 passes through the ventilation hole 24a to the inside of the drive unit mounting plate 21. The cooling air that has entered is smoothly guided by the side wall portion 23, so that the cooling air is satisfactorily blown to the rotating dish motor 10 and the like.

In the above-described embodiment, the side wall 2 extends from the right end to the left end at the front and rear ends of the drive unit mounting plate 21.
3 and 24 are provided, but instead of this, the drive unit mounting plate 21 is provided.
, Only the arrangement portion of the drive shaft motor 16, that is,
The side wall may be provided at the front and rear ends of only the portion arranged in the machine room 3. In this configuration,
The drive unit mounting plate 21 has sufficient strength to support the weight of the drive shaft motor 16 by the side wall.

[0034]

As is apparent from the above description, the present invention comprises a drive shaft mounting plate for mounting a drive shaft, a rotation transmitting mechanism and a motor for the drive shaft, and the drive shaft mounting plate in the drive shaft mounting plate. A side wall portion is provided at the front and rear ends of a portion where the motor is provided, and a ventilation hole is provided at a rear side wall portion of the side wall portion. This provides an excellent effect that the motor and the like can be sufficiently cooled.

[Brief description of the drawings]

FIG. 1 is a vertical front view of a microwave oven showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view of a microwave oven.

FIG. 3 is a top view of a drive unit mounting plate.

FIG. 4 is a front view of a driving unit mounting plate.

FIG. 5 is a rear view of the drive unit mounting plate.

FIG. 6 is a view corresponding to FIG. 1 showing a state in which a rotating plate is mounted.

[Explanation of symbols]

1 is an outer box (body), 2 is a cooking chamber, 3 is a machine room, 4 is a magnetron (high frequency heating means), 6 is a hot air supply device (electric heating means), 7 is a heater, 8 is a fan device, and 9 is a fan device. Rotating dish, 10 is a rotating dish motor, 11 is a rotating shaft, 12 is a bottom plate, 12a is a through hole, 13 is a container, 14 is a container shaft, 1
4a is a kneading blade, 14b is a connecting portion, 15 is a drive shaft portion, 1
5a is a connecting portion, 15b is a gear portion, 16 is a drive shaft motor, 17 is a rotation transmitting mechanism, 18, 19 are pulleys, 19a
Is a gear portion, 21 is a driving portion mounting plate, 22 is a substrate portion, 22a
Is a through hole, 22b is a through hole, 22c is a mounting hole, 23, 2
4 is a side wall, 24a is a ventilation hole, 25 is a bottom plate, and 27 is a cooling fan device.

Claims (6)

[Claims] 1. A main body; a cooking chamber provided in the main body; a machine room provided in the main body at a side of the cooking chamber; and a high frequency radio frequency heating a food in the cooking chamber. Heating means, electric heating means for heating food in the cooking chamber, a rotatable plate which is detachably provided in the cooking chamber and on which food is placed, and a motor for a rotatable dish which rotates the rotatable dish. A container that is removably mounted in place of the rotary dish in the cooking chamber and that holds food for kneading; a container shaft that is provided through the bottom of the container and kneads the food; A drive shaft for rotating a shaft, the drive shaft being provided coaxially with the rotation shaft of the rotating dish motor, and the drive shaft being provided in the machine room, and the drive shaft being provided via a rotation transmission mechanism. Drive shaft drive mode When the drive shaft portion, wherein the rotation transmission mechanism and attaching the motor the drive shaft unit driver mounting plate, provided behind the drive unit mounting plate in the machine room,
A cooling fan device that generates cooling air; a side wall portion provided at the front and rear ends of a portion where the drive shaft portion motor is provided in the drive portion mounting plate; and a rear side wall portion of the side wall portions A cooking device comprising a vent hole provided. 2. An installation hole for positioning and attaching an end of the drive unit mounting plate on the drive shaft side to the bottom of the cooking chamber is provided at an end of the drive shaft unit side, wherein the drive unit mounting plate is provided. Wherein a mounting hole for adjusting the position of the drive shaft part motor side end to the bottom of the main body is provided at the drive shaft part motor side end or the bottom part of the main body. Item 2. A heating cooker according to Item 1. 3. The cooking device according to claim 1, wherein the drive shaft motor is provided at a front portion in the machine room, and the electric heating means is provided at a back portion of the cooking room. 4. The cooking device according to claim 1, wherein the drive shaft motor is disposed at a front portion in the machine room, and the high-frequency heating means is disposed at a central portion in the front-rear direction in the machine room. vessel. 5. The cooking device according to claim 1, wherein a weight sensor for detecting the weight of the food is provided on the rotating dish motor. 6. The heating cooker according to claim 1, wherein a wind guide side wall is provided at a front end of the drive unit mounting plate.