JPS63178740A - Cooking apparatus - Google Patents

Abstract

PURPOSE:To improve cooling efficiency of a motor and perform assembling of an apparatus easily by forming a wall opposed to said motor having a vent hole in the upper part of the motor and by coupling a fan having an external form a little larger than said vent hole to the upper end of the motor. CONSTITUTION:A motor-opposed wall 2a opposed to the upper part of a motor 12 is covered with a top cover 4 to form a body case 1. Further, an exhaust chamber 7 having an exhauster part 8 communicating with the outside of the body case 1 is formed between the top cover 4 and the motor-opposed wall 2a. An axial fan 14 is coupled to the upper end of a rotating shaft 13 of the motor 12 and a vent hole 9 a little larger than the external form of said fan 14 is formed in the motor-opposed wall 2a. Therefore, a cooling air taken in from an inlet port 3 provided at the lower part of the body 1 circulates in the body case 1 and is discharged from an outlet port 8 and a heated air is never taken in again so that cooling efficiency is improved. Also, external dimensions of the fan 14 make it easy to assemble an apparatus.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to cooking devices such as food processors.

[Conventional technology]

BACKGROUND ART A cooking device such as a food processor is configured to rotate a cutter in a cooking container using a motor built in a main body case to process vegetables and other food materials placed in the cooking container. In this type of device, the motor generates heat, so it is necessary to cool it.

Therefore, in the conventional motor cooling structure, an intake port is provided at the bottom of the main body case, an exhaust port is provided at the upper side of the main body case, and an axial fan is installed at the bottom of the motor's rotating shaft. .

In this motor cooling structure, which simply has a fan attached to the rotating shaft, when the motor is operated, the cooling air generated by the rotation of the fan acts on the motor, cooling the motor and warming it up. The air is discharged out of the main body case from the above-mentioned exhaust port.

[Problem that the invention seeks to solve]

However, according to the conventional cooling structure, since the fan is simply attached to the rotating shaft, the warm air that cools the motor is sucked into the fan again within the main body case, and circulates extensively within the main body case. Cheap. Therefore, there was a problem that the cooling effect of the motor was not good.

Therefore, an object of the present invention is to provide a cooking device that can improve the cooling efficiency of the motor and is easy to assemble.

[Means for solving problems]

The cooking device of the present invention includes a main body case containing a built-in motor that rotationally drives a cutter in a cooking container, a wall portion facing the motor facing the upper portion of the motor, and a top cover attached to this wall portion. an exhaust chamber having an exhaust section communicating with the outside of the main body case is formed between the top cover and the wall facing the motor, and an axial flow fan is provided at the upper end of the rotating shaft of the motor A ventilation hole slightly larger than the outer diameter of the fan is formed in the wall facing the motor, and the fan is disposed in the ventilation hole portion.

[Effect]

In the present invention, when the motor is operated, the cutter is rotated by the rotating shaft to process the food material, and at the same time, the fan connected to the upper end of the rotating shaft is rotated. The fan forces cold air sucked in from the bottom of the main body case to act on the motor, thereby forcibly cooling the motor. The air warmed by this air cooling passes through the fan, passes through the exhaust chamber while being guided by the inner surface of the top cover and the outer surface of the wall facing the motor, and is discharged from the exhaust section of the exhaust chamber to the outside of the main body case. The space where the motor is built in and the exhaust chamber of the main body case are communicated through a ventilation hole formed in the wall facing the motor, and a fan is installed in this ventilation hole. and a fan separate the intake flow and exhaust flow. Therefore, it is possible to prevent the warm exhaust flow that has passed through the motor and the fan from circulating in the space in which the motor is built in the main body case. Furthermore, since the ventilation opening is slightly larger than the fan, when the motor is assembled into the main body case, the fan attached to the rotating shaft can be disposed at the ventilation opening in the wall facing the motor at the same time. Thereby, after the motor is assembled, there is no need to take the trouble of retrofitting the fan to the rotating shaft, and the assembly can be easily performed.

〔Example〕

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

In the figure, 1 is a main case made of synthetic resin, which consists of a main case part 2 having a substantially rectangular shape, a bottom plate 3 that closes the lower end opening of the main part 2, and a wall facing the motor that forms the top of the main case part 2. Part 2a
It is formed from a top cover 4 attached to the top cover 4. The motor facing wall portion 2a is a wall portion facing the upper portion of the motor 12, which will be described later.

The bottom plate 3 has an intake port 3 facing below a motor 13, which will be described later.
It has a. Then, the bottom plate 3 is assembled by screwing screws 6 from the bottom side of the bottom plate 3 into a plurality of screw receivers 5 (representatively shown in FIG. It is attached to the main part 2 of the case. top cover 4
is attached to the case main portion 2 by screwing screws (not shown) into a plurality of screw receivers (not shown) integrally protruding from the inner surface of the motor-facing wall portion 2a from the lower surface side of the motor-facing wall portion 2a.

An exhaust chamber 7 is formed between the motor-facing wall 2a and the top cover 2a, and the exhaust chamber 7 is communicated with the outside of the main body case 1 through an exhaust section 8 provided at its lower end. As shown in detail in FIG. 2, the exhaust section 8 of this embodiment is provided in the form of a slit in the upper side surface of the main body case 1, and this exhaust section 8 is located below the ventilation opening 9, which will be described next. This prevents water that has passed through the exhaust section 8 from entering the ventilation opening 9 when the main body case 1 is exposed to water.

In addition, 4a in FIG. 1 is an exhaust guide integrally provided on the inner surface of the top cover 4, which passes through the ventilation hole 9 and connects to the exhaust chamber 7.
The air flowing into the exhaust section 8 is smoothly guided toward the exhaust section 8. Roughly speaking, a ventilation hole 9 is formed on the upper surface of the motor facing portion 2a. This ventilation hole 9 is formed, for example, with an upward flange portion 9a.

A motor mounting plate 10 is attached inside the case main part 2 of the main body case 1. For this installation, the plate 10 has a plurality of screw holders (not shown) protruding from the inner surface of the case main part 2, and the motor is attached to the protrusions using screws (not shown) inserted from the bottom side of the plate 10. It is attached to the case main part 2 by the screw 6 screwed into the part 5. The tightening of these screws is done using a pair of protective rubber gaskets 1 that sandwich the plate 10, as shown in FIG.
1 is provided. In this motor mounting, a commutator type motor 12 is mounted on the upper surface of the plate 10.

An axial fan 14 is connected to the upper end of a rotating shaft 13 of the motor 12 . The outer diameter A of this fan 14 is formed to be slightly smaller than the diameter B of the ventilation port 9, and is arranged at the ventilation port 9 portion. Note that this embodiment shows a case where the fan 14 is disposed in the ventilation opening 9 so that the ventilation opening 9 is partitioned and its upper portion projects into the exhaust chamber 7 .

Moreover, as shown in detail in FIGS. 3 and 4, the fan 14 has a ring portion 15 with a slightly smaller diameter than the ventilation opening 9, a shaft connecting portion 16 connected to the rotating shaft 13, and a plurality of diagonal blades 17. A plurality of air blowing protrusions 18 are integrally formed on the outer surface of the upper part of the ring part 15 located in the exhaust chamber 7 . The oblique blade core has an inclined configuration such that its lower end is located at the front side in the rotational direction and its upper end is located at the rear side in the rotational direction. Note that the solid line arrows in FIGS. 3 and 4 indicate the rotation direction of the fan 14. The blowing protrusion 18 functions to send air in a centrifugal direction, and is formed of a rib-shaped protrusion extending along the axial direction of the ring portion 15, for example.

Further, a cooking container 19 made of transparent glass is detachably attached to the upper surface of the base portion 1a of the main body case 1. The top opening of this container 19 is closed with a lid 20 that is detachably attached, and a cutter 21 is attached to the bottom of the cooking container 19. The cutter 21 is rotationally driven by the motor 12.

In FIG. 1, 22 is a drive pulley fixed to the lower end of the rotating shaft 13, and 23 is fixed to a driven rotating shaft (not shown) to which a container rotating shaft (not shown) to which the cutter 21 is attached is detachably connected. Driven pulley, 24 is both pulleys 22
．． The cutter 21 is a belt wound around the cutter 23, and the rotation of the motor 13 is transmitted to the cutter 21 through the belt. In addition, the above-mentioned driven rotating shaft is the main body case 1.
To assemble the cooking device having the above-mentioned structure, which is rotatably installed in the base portion 1a of The top cover 4 is connected to the case main part 2 by inserting screws (not shown) from the side. Next, the motor 12 with the fan 14 connected to the rotating shaft 13 is fixed in advance, and the plate 10 is housed and fixed in the case main part 2 to which the driven rotating shaft has already been mounted. This fixing work is
The motor is mounted on the plate 10 from the lower end opening inside the main part 2 of the case.
A downward screw receiver (not shown) protruding from the inner surface of the case main part 2 is placed over the protrusion and the screw receiver part 5, and a screw (not shown) is screwed into the screw receiver (protrusion). By assembling the motor mounting plate 10 into the case main part 2, the fan 14 is arranged at the ventilation opening 9 of the motor-facing wall 2a of the case main part 2.

Such an arrangement is possible by making the diameter of the ventilation port 9 slightly larger than the outer diameter Δ of the fan 14. Therefore, the motor installation with the motor 12 fixed does not require the effort of retrofitting the fan 14 to the upper end of the rotating shaft 13 after the plate 10 is assembled. While connecting the drive pulley 22 to
A driven pulley 23 is connected to the lower end of a driven rotating shaft (not shown), and a belt 24 is connected across both pulleys 22 and 23.
Install. Finally, attach the bottom plate 3 to the bottom opening of the main part 2 of the case.
After that, screw the screw 6 into the screw receiver part 5 through the bottom plate 3 to connect the bottom plate 3 to the case main part 2 to complete the assembly of the main body case 1. 10 is finally fixed. In the above manner, the top cover 4 is attached to the motor facing wall 2 before being fixed.
Complete the assembly by performing all operations from the same direction, except for covering part a.

The cooking device having the above configuration has a base portion 1 of the main body case 1.
It is used by setting one cooking container on top a and operating the motor 12. Then, the cutter 21 is rotationally driven to process the food material put into the cooking container 19, and the fan 14 is simultaneously rotated and the motor 12
is forced to air cool. This cooling is accomplished as follows.

In other words, the fan 14 sends a stream upward along the axial direction of the fan 14 as shown by the dotted line arrow in FIG.
Cold air from outside is drawn in and this air circulates inside and outside the motor 12. Thereby, the motor 12 is air-cooled.

The air heated by the motor 12 passes through the fan 14 and enters the exhaust chamber 7, and then passes through the inner exhaust guide 4 of the top cover 4.
a and the outer surface of the motor-facing wall 2a, the gas flows through the exhaust chamber 7 and is discharged from the exhaust section 8 of the exhaust chamber 7 to the outside of the main body case 1.

Incidentally, the space in which the motor is built in the main body case 1, that is, the inside of the case main part 2, and the exhaust chamber 7 are communicated with each other through a ventilation hole 9 formed in the motor-facing wall 2a. 14 is disposed, so that the motor-facing wall 2a and the fan 14 partition the flow of intake air and the flow of exhaust air. Therefore, the warm exhaust flow that has passed through the motor 13 and the fan 14 is prevented from circulating within the case main part 2, which is the space in which the motor is built in the main body case 1, so that the cooling efficiency of the motor 12 can be improved.

Moreover, in this embodiment, the ring portion 1 of the fan 14
Since a plurality of air blowing protrusions 18 are protruded from the outer surface of the fan 5, air around the fan 14 can be sent along the centrifugal direction of the fan 14 by these protrusions 18. This prevents the warm air that has passed through the fan 14 from flowing back to the bottom of the fan 14 through the gap between the edge of the ventilation hole 9 and the ring part 15, and also allows the warm air to pass through the gap, albeit a little. Warm air within the case main portion 2 can also be drawn out to the exhaust chamber 7. Therefore, this backflow prevention effect also prevents a decrease in the air blowing efficiency of the fan 14, so that the cooling efficiency of the motor 12 can be further improved.

It may be provided. Furthermore, as long as the fan 14 is close to the vent 9, it may be provided so that the entire fan 14 is located within the exhaust chamber 7 or within the case main portion 2. Unless otherwise contradictory, the specific structure of the main body case, motor, cooking container, cutter, wall facing the motor, top cover, fan, ventilation opening, etc.
The shape, position, etc. are not limited to the above example.
With various aspects and a fan arranged in the above-mentioned side opening part,
This prevents warm air from circulating inside the main body case, improving the cooling efficiency of the motor. After the assembly of the fan, there is no need for the effort of retrofitting the fan to the rotating shaft, and the assembly can be easily performed.

FIG. 1 is a sectional view of a main part, FIG. 2 is a perspective view of the entire fan, FIG. 3 is a perspective view of the fan, and FIG. 4 is a sectional view of a part of the fan.

1...Main body case, 2a...Motor opposing wall, 4.
...Top cover, 7...Exhaust chamber, 8...Exhaust section,
9... Ventilation port, 12... Motor, 13... Rotating shaft, 14... Fan, 15... Ring part, 16...
Shaft connection part, 17... Oblique blade, 18... Air blowing protrusion,
19...Cooking container, 21...Cutter.

Applicant's agent: Patent attorney Takehiko Suzue Figure 3 Figure 4

Claims (2)

[Claims] (1) In a cooking device that processes food materials put into the cooking container by rotationally driving a cutter in the cooking container by a motor built in the main case, the main case is placed opposite to the upper part of the motor. a wall facing the motor, and a top cover attached to the wall, and an exhaust section communicating with the outside of the main body case between the top cover and the wall facing the motor. A fan is connected to the upper end of the rotating shaft of the motor, a ventilation port slightly larger than the outer diameter of the fan is formed in a wall facing the motor, and the fan is connected to the ventilation port portion. A cooking device characterized by: (2) In the statement of claim (1), the fan connects a ring portion having a slightly smaller diameter than the ventilation hole and a shaft connecting portion connected to the rotating shaft with a plurality of oblique blades. The cooking device is further characterized in that a plurality of ventilation protrusions are provided protrudingly on the outer peripheral surface of the ring portion located within the exhaust chamber.