JP5871391B2 - Range food - Google Patents

Description

  The present invention relates to a range hood that is installed around cooking utensils and collects cooking gas such as oily smoke generated by cooking and exhausts it to the outside.

In recent years, it has changed to a propeller type ventilation fan as a kitchen ventilation device, and cooking gas such as oily smoke generated by cooking placed around cooking utensils is collected inside the hood by a built-in blower and exhausted outdoors etc. A range hood has been proposed that blows air purified by various filters into the room.
For example, as disclosed in Patent Document 1, a rectifying plate is provided on a hood provided with a blower, and cooking gas such as oily smoke is sucked and collected through a gap between the inner surface of the hood and the rectifying plate, and is exhausted outdoors. A range hood has been proposed.

Japanese Patent No. 4409711

In the conventional range hood described above, oil stains such as oil and fat in cooking gas adhere to the inside of the hood and the fan of the blower, so that the inside of the hood may be manually cleaned by a person.
In the case of the range hood in which the fan of the blower described above can be taken out from the inside of the hood, not only the inside of the hood but also the fan of the blower may be removed and taken out from the inside of the hood for cleaning.
In addition, with the spread of face-to-face kitchens and island-type kitchens, the living room and kitchen are often laid out in series, so oil stains are attached to the inside of the hood of the range hood and the fan of the blower. Then, the opportunity to clean the inside of the hood of the range hood and take out the fan of the blower from the inside of the hood from the badness that the smell of oil is transmitted to the living side is increasing.
In the above-described conventional range hood, the rectifying plate is removed and the inside of the hood is cleaned by wiping with a hand, or the fan of the blower is removed from the inside of the hood and washed with a sink or the like. Since this range hood is equipped with a filter, remove the filter along with the current plate and clean it, or take out the fan.
However, as described above, when cleaning the inside of the hood or taking out the fan of the blower, if the blower is operating, human hands may touch the rotating fan, so clean the inside of the hood. When the fan is taken out, the blower is stopped by an operation such as unplugging the outlet. However, there is a possibility that danger may arise if the fan is forgotten.

  The object of the present invention is to clean the inside of the hood or take out the fan of the blower from the inside of the hood, without stopping the blower without stopping the blower, and the fan does not rotate, The range hood is designed so that no danger arises even if the blower stop operation is forgotten during the fan removal operation.

The present invention is a range hood provided with a hood 1 and a blower 4,
A protective member 5 that faces the suction port 41 of the blower 4 and prevents a human hand from entering the suction port 41 can be removed from the hood 1 at a position upstream of the suction port 41 of the blower 4. And is provided with a judging means 6 for judging the presence or absence of the protective member 5,
When the determination means 6 determines that there is no protective member, the motor 4c that rotates the fan 4b of the blower 4 cannot be energized,
A warning device 80 is provided that operates for a predetermined time when the determination means 6 determines that there is no protective member, and operates again when the operation switch 7 for controlling energization of the motor 4c from the power source is operated. It is a range hood.

  In the present invention, when the judging means 6 judges that the protective member is present, it is turned on and off by manual operation, and when the judging means 6 judges that the protective member is present from the presence of the protective member in the lit state. The hood 1 can be provided with a lighting device 76 that is turned off.

  In this way, since the illuminating device 76 is turned off when the protective member is removed, useless power consumption can be suppressed.

  In the present invention, when the judging means 6 judges that the protective member is present, it is turned on and off by manual operation, and when the judging means 6 judges that the protective member is present from the presence of the protective member in the lit state. It is possible to provide the hood 1 with a lighting device 76 that is turned off and then turned on manually.

  In this way, when the protective member is removed, the illuminating device 76 can be turned on again, so that it is easy to perform the operation of attaching the protective member again when the periphery of the hood 1 is dark.

  In the present invention, the protective member 5 may be any one of the rectifying plate 50, the filter 56, and the cover plate 57 having the ventilation openings 57a.

According to the present invention, in a state where the protective member 5 is attached to the hood 1, the energization control is performed on the motor 4c of the blower 4 to rotate and stop the fan 4b, so that the operation of the range hood can be controlled.
When cleaning the inside of the hood or taking out the fan 4c of the blower 4 from the inside of the hood, since the protective member 5 is removed, the motor 4c that rotates the fan 4c cannot be energized, so the fan 4c may rotate. There is no danger even if the blower stop operation is forgotten at the time of cleaning the inside of the hood or taking out the fan 4c.
In addition, it is not dangerous because the fan 4c does not rotate even if the blower is driven during the cleaning operation inside the hood or the operation of taking out the fan 4c.
Further, since the warning device 80 is provided that operates when the determination means 6 determines that there is no protective member, the warning device 80 is activated when the protective member 5 is removed, so that the user of the range hood does not have the protective member 5. Can be detected.
Further, when the operation switch 7 is operated with the protective member 5 removed, the warning device 80 is activated, so that the user of the range hood can sense that the range hood does not operate because the protective member 5 is not provided.

It is a longitudinal cross-sectional view of the range hood which shows the 1st Embodiment of this invention. It is AA sectional drawing of FIG. It is a longitudinal cross-sectional view of the state which made the baffle plate the downward attitude | position in FIG. It is sectional drawing of the state which removed the baffle plate in FIG. It is a motor drive circuit diagram. It is sectional drawing of the range hood which shows the 2nd Embodiment of this invention. It is sectional drawing of the range hood which shows the 3rd Embodiment of this invention. It is a motor drive circuit diagram which shows the 4th Embodiment of this invention. It is a motor drive circuit diagram which shows the 5th Embodiment of this invention.

A first embodiment of the present invention will be described with reference to FIGS.
The hood 1 includes a hood main body 1 a and a blower housing 1 b, and the hood main body 1 a has an outer shell 2 and an inner shell 3.
The outer shell 2 has a box shape in which the lower surface is opened by the upper surface plate 20 and the peripheral surface plate 21, and an opening 22 is formed in the upper surface plate 20. A flange 23 is provided.
The inner shell 3 is shaped like a downward plate with the upper surface plate 30 and the peripheral surface plate 31, and a cylindrical body 33 is provided at the periphery of the hole 32 of the upper surface plate 30, and outward at the lower end of the peripheral surface of the peripheral surface plate 31. A mounting flange 34 is provided.
The cylindrical body 33 of the inner shell 3 is fitted into the opening 22 of the outer shell 2, and the mounting flange 34 is detachably connected to the mounting flange 23 to connect the outer shell 2 and the inner shell 3 to form the hood main body 1a. is there.
The lower surface of the inner shell 3 is the inside of the hood 1.

The blower housing 1b has a box shape having an inlet side opening 24 and an outlet side opening 25, and the blower 4 is provided therein.
The blower housing 1b is attached to the upper surface plate 20 of the outer shell 2 so that the inlet side opening 24 is fitted into the cylinder 33.

The blower 4 is provided with a fan 4b in a casing 4a and rotationally drives the fan 4b by a motor 4c provided in the casing 4a.
A discharge portion 40 communicating with the casing 4a is fitted into the outlet side opening 25, and a suction port 41 formed in the casing 4a communicates with the cylindrical body 33 (hole 32), from the cylindrical body 33 to the suction port 41. The rotary shaft 43 of the motor 4c and the fan 4b can be separated by putting the hand in and loosening the lock member 42, and the rotary shaft 43 of the motor 4c and the fan 4b can be connected by tightening the lock member 42.
Thus, the fan 4b of the blower 4 can be easily taken out from the hood 1 from the hood 1.

The hood 1, for example, the inner shell 3 of the hood main body 1 a, faces the suction port 41 of the blower 4 at a distance from each other and prevents a human hand from entering the suction port 41, for example, rectification A plate 50 is removably attached.
A means 6 for determining whether or not the rectifying plate 50 is attached to the hood 1, for example, a limit switch 60, is attached to the inner shell 3.

When the limit switch 60 is ON, that is, when it is determined that the current plate is present, by operating the operation switch 7, the motor 4c of the blower 4 can be energized as usual.
When the limit switch 60 is OFF, that is, when it is determined that there is no rectifying plate, the motor 4c of the blower 4 cannot be energized regardless of the operation of the operation switch 7.
The operation switch 7 is attached to the front surface of the hood 1, for example, the peripheral plate 21 of the outer shell 2 of the hood main body 1a.

Since it is like this, in the state which attached the baffle plate 50, the fan 4 can be driven and stopped by operating the operation switch 7, and a range hood can be drive | operated normally.
Further, since the fan 4b of the blower 4 is stopped regardless of the operation switch 7 with the rectifying plate 50 removed, it is not dangerous to touch the fan 4b when cleaning the inside of the hood 1 with a human hand. There is no danger when taking out the hood 1 from the inside of the hood 1, and no danger arises if the operation of stopping the blower 4 is forgotten during these operations.
Moreover, even if the operation switch 7 is accidentally touched during the above-described operation, the fan 4b of the blower 4 does not rotate and no danger arises.

The attachment of the current plate 50 will be described.
The rectifying plate 50 has a shape in which a rising piece 52 is provided on the periphery of a flat plate 51, and a support shaft 53 is provided laterally on a rear side 52 a of the rising piece 52.
A support piece 54 is attached to the rear side 31 a of the peripheral surface plate 31 of the inner shell 3, and the support shaft 53 is supported at the front end portion of the support piece 54 so as to be rotatable in the vertical direction and detachable. is there.
Thereby, the baffle plate 50 can be rotated up and down between the mounting posture shown in FIG. 1 and the downward posture shown in FIG. 3, and the support shaft 53 is removed from the tip of the support piece 54 in the downward posture. Thus, the current plate 50 can be removed.

  Support members 35 are provided on both the left and right sides of the upper surface plate 30 of the inner shell 3 near the front, and supported members 55 are provided on the left and right sides of the rectifying plate 50 near the front of the flat plate 51. By supporting the member 55 with the support member 35, the rectifying plate 50 is supported in the mounting posture, and by releasing the support, the rectifying plate 50 can be rotated in the downward posture.

The support member 35 includes a bracket 35a, a support pin 35b provided on the bracket 35a, a spring case 35c, and a spring 35d provided between the spring case 35c and the support pin 35b. The support pin 35b is a spring. It is held at the support position by 35d.
The supported member 55 is formed by forming a support hole 55b in the bracket 55a, and the support pin 35b is pushed by the bracket 55a by rotating the current plate 50 from the downward posture toward the attachment posture. Is fitted into the support hole 55b, so that the supported member 55 is supported by the support member 35 and supported in the mounting posture. By pushing the support pin 35b against the spring 35d and withdrawing it from the support hole 55b, the support of the supported member 55 is released, and it can be rotated downward.

The limit switch 60 is attached to the left and right sides of the upper surface of the upper surface plate 30 of the inner shell 3, and the operating rod 61 projects downward from the hole 36 of the upper surface plate 30, and the supported member 55, for example, It faces the upper horizontal piece 55c of the bracket 55a.
When the straightening plate 50 is in the mounting posture, as shown in FIG. 2, the upper horizontal piece 55c of the bracket 55a pushes up the operating rod 61 and turns on the limit switch 60.
When the straightening plate 50 is in the downward posture or removed, the upper horizontal piece 55c of the bracket 55a is separated from the operating rod 61, the operating rod 61 moves downward, and the limit switch 60 is turned off.

  By attaching the limit switch 60 as described above, only the operating rod 61 protrudes to the lower surface of the upper surface plate 30 of the inner shell 3, that is, the inside of the hood 1. There is no hindrance.

As shown in FIG. 5, the operation switch 7 includes a strong operation switch 70, a medium operation switch 71, a weak operation switch 72, a turn-off switch 73, a lighting switch 74, and the like, and the strong / medium / weak switches 70, 71, 72 include The power switch 75 and the motor 4c of the blower 4 are intermittently connected. The limit switch 60 is provided between the power source 75 and the input side of the strong / medium / weak operation switches 70, 71, 72.
The illumination switch 74 is for energizing the illumination fixture 76 attached to the hood 1.
The off switch 73 is turned off when the operation switch is turned on.
The limit switch 60 may be provided in a connection circuit between the operation switch and the motor 4c.

Thus, when any of the operation switches is ON, that is, when the blower 4 is driven, the limit switch 60 is turned OFF and the motor 4c is not energized when the rectifying plate 50 is lowered or removed. The blower 4 stops.
In addition, since the limit switch 60 is OFF when the rectifying plate 50 is in the downward posture or in the removed state, none of the operation switches is turned on to energize the motor 4c, so the blower 4 is not driven.

In this embodiment, the hood body 1a and the blower housing 1b are used as the hood 1. However, only the hood body 1a is used as the hood 1, and the discharge portion 40 of the blower 4 is exhausted to the outside through a duct or the like. good.
Moreover, you may comprise the food | hood main body 1a only with the outer shell 2. FIG.

In the above-described embodiment, the smoke or the like that has flowed from the gap between the inner surface of the inner shell 3 (the inner surface of the hood 1) and the rectifying plate 50 is directly sucked into the suction port 41 of the blower 4. A filter may be provided.
In this case, the filter is removed and the fan 4b is taken out.

Next, a second embodiment of the present invention will be described with reference to FIG.
This embodiment differs from the above-described embodiment in that the protective member 5 is a filter 56, and the other configurations are the same.
The hood 1 has a box shape in which a lower surface is opened by an upper surface plate 1a and a peripheral surface plate 1b, and an upper partition plate 1c and a lower partition plate 1d are provided inside the hood 1.
A filter 56 is detachably attached over the upper partition plate 1c and the lower partition plate 1d to form a blower storage chamber 1e in the hood 1, and the blower 4 is mounted in the blower storage chamber 1e.
The suction port 41 of the blower 4 faces the filter 56, and the filter 56 is the protective member 5 described above. This filter 56 is called a grease filter.

A downward recess 10 is formed in the upper partition plate 1c, and an upward recess 11 is formed in the lower partition plate 1d so as to face each other.
The filter 56 is attached by fitting the upper part of the filter 56 into the downward concave part 10 and the lower part of the filter 56 into the upward concave part 11, and is pushed up by the elastic material 12 provided at the bottom of the upward concave part 11. When the filter 56 is pushed down against the elastic member 12 while being in contact with the bottom of the recess 10, the upper part is released from the downward recess 10, and the upper part of the filter 56 is moved to the near side and lifted diagonally upward so that the lower part is upward. It comes out of the recess 11.
Since it is like this, the filter 56 can be attached to and removed from the downward concave portion 10 and the upward concave portion 11 in an up-and-down manner.

A limit switch 60 is attached to the upper partition plate 1c, and its operating rod 61 projects downward into the recess 10.
When the filter 56 is attached, the operating rod 61 is pushed up by the filter 56 and the limit switch 60 is turned on. When the filter 56 is removed, the operating rod 61 protrudes into the downward recess 10 and the limit switch 60 is turned off.

  Therefore, by providing the limit switch 60 in the energization circuit of the motor 4c as shown in FIG. 5, when the filter 56 is attached, the operation of the range hood can be controlled by operating the operation switch 7. Since the motor 4c cannot be energized regardless of the operation of the operation switch 7 when it is removed, there is a danger even if you forget to stop the blower 4 when cleaning the inside of the hood 1 or removing the fan 4b from the hood 1. There is no.

  Further, in the state where the filter 56 is attached, the filter 56 is pushed up by the elastic material 12, whereby the operating rod 61 of the limit switch 60 is pushed up and can be turned on reliably.

Next, a third embodiment of the present invention will be described with reference to FIG.
The hood 1 is an upper surface plate 1a, a peripheral surface plate 1b, and an annular lower inward plate 1f provided along the lower peripheral edge of the peripheral surface plate 1b, and has a shape having a suction opening 1g in the lower portion.
A cover plate 57 is detachably attached to the lower inward plate 1f. For example, it is attached with a screw 58.
The cover plate 57 closes the suction opening 1g and faces the suction port 41 of the blower 4. The cover plate 57 protects the suction port 41 from entering a human hand. This is the member 5.

Slit-shaped ventilation openings 57a are formed near the front and rear and left and right edges of the cover plate 57. When the blower 4 is driven, cooking gas such as oily smoke is collected inside the hood 1 from the ventilation openings 57a and is used outdoors. Exhaust.
In the range hood shown in FIG. 7, a baffle plate (not shown) on which the cooking gas collides is provided on the lower surface of the upper plate 1a of the hood 1, that is, the inner surface of the hood 1, and oil stains adhere to the surface of the baffle plate. I have to do it. This baffle plate can also be provided on the upper surface of the cover plate 57.

A limit switch 60 is attached to the lower inward plate 1 f of the hood 1. When the operating rod 61 of the limit switch 60 comes into contact with the cover plate 57, the limit switch 60 is turned ON, and when the operating rod 61 is separated from the cover plate 57, the limit switch 60 is turned OFF.
This limit switch 60 is provided in a circuit for connecting the power source and the motor 4c as shown in FIG. 5, and communicates and blocks the circuit.

Thus, when the cover plate 57 is attached to the hood 1, the operation switch 7 is operated to rotate or stop the motor 4 c, so that the operation of the range hood can be controlled.
In a state where the cover plate 57 is removed, the motor 4c is not energized, and no danger arises even if the operation of stopping the blower 4 is forgotten during the internal cleaning operation of the hood 1 or the fan 4b removal operation.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
In this embodiment, a warning device 80 is provided, and this warning device 80 is activated when the operation switch 7 is operated with the rectifying plate 50 (protective member 5) removed.
That is, the circuit 81 connects between the input side of the operation switch 7 and the output side of the limit switch 60 and the return side of the power source 75, and the circuit 81 is provided with a relay 82. When the limit switch 60 is ON, the relay 82 has a current. The current flows through the relay 82 when it is OFF.

An interlocking switch 77 is provided on the operation switch 7. The interlock switch 77 is turned on when any one of the strong operation switch 70, the medium operation switch 71, and the weak operation switch 72 is turned on, and is turned off together with the operation switch by operating the off switch 73.
The input side of the interlock switch 77 is connected to the power source 75, the output side is connected to the return side of the power source 75 via the contact 82a of the relay 82 and the alarm device 80, and the alarm device is activated when the interlock switch 77 is ON and the contact 82a is ON. 80 is energized to operate.
The contact 82a of the relay 82 is OFF when the relay 82 is energized, and is ON when it is not energized.
As the warning device 80, a buzzer, a lamp, a sound generator or the like is used.

Next, the operation will be described.
When the rectifying plate 50 is attached, the limit switch 60 is ON, the relay 82 is energized and the contact 82a is turned OFF. Therefore, any one of the strong operation switch 70, the intermediate operation switch 71, and the weak operation switch 72 is operated. Even if the motor 4c is energized and the interlock switch 77 is turned on, the alarm device 80 is not energized and does not operate.

  When the rectifying plate 50 is removed, the limit switch 60 is OFF and the relay 82 is not energized and the contact 82a is ON. Therefore, when any of the strong operation switch 70, the intermediate operation switch 71, and the weak operation switch 72 is operated. The interlock switch 77 is turned on and the alarm device 80 is energized to operate.

  As described above, when the operation switch 7 is operated with the rectifying plate 50 removed, the warning device 80 is activated. Therefore, the user of the range hood can sense that the range hood does not operate because the rectifying plate 50 is not provided.

  Although the warning device 80 may be operated continuously, in this embodiment, the warning device 80 having a timer function is operated for a predetermined time. The alarm device 80 may be operated for a predetermined time by providing a timer in a circuit connecting the interlocking switch 77 and the alarm device 80.

In this embodiment, since the input side of the illumination switch 74 is connected to the downstream side of the limit switch 60, the limit is obtained by removing the rectifying plate 50 in a state in which the illumination switch 76 is turned on by operating the illumination switch 74. When the switch 60 is turned off, the lighting device 76 is turned off.
Since it is like this, when the baffle plate 50 is removed and the motor 4c stops, the illuminating device 76 is extinguished, so that consumption can be suppressed without wasting power.

  In each of the embodiments described above, the determination means 6 is the limit switch 60. However, the present invention is not limited to this, and various switches such as a micro switch, a proximity switch, a magnet switch, a photoelectric switch having a light emitter and a light receiver are used. Etc. can be used.

  A signal from the operation switch 7 is sent to a controller such as a microcomputer, and a control type range hood in which the controller controls the energization of the motor 4c based on the signal is used. An OFF signal of the limit switch 60 may be input to the controller, and the controller may stop energization of the motor 4c and stop the motor 4c.

The above-described operations of the warning device 80 and the lighting tool 76 can be controlled using a controller such as a microcomputer.
As shown in FIG. 9, the signal from the operation switch 7, the presence / absence signal of the determination means 6 (limit switch 60) is input to a controller 90 such as a microcomputer, and the motor is based on the input signal. A control signal is output to the energization circuit 91, and an ON / OFF signal is output to the lighting device 76 and the warning device 80.

For example, when no signal is input from the determination unit 6 to the controller 90, the controller 90 outputs a signal for operating the warning device 80 when an operation signal is input from the operation switch 7 to the controller 90.
Further, when a lighting signal is input from the operation switch 7 to the controller 90 when a presence signal is input from the determination unit 6 to the controller 90, the controller 90 outputs a lighting signal of the lighting fixture 76, and the lighting signal is When the input is stopped, the controller 90 outputs a turn-off signal for the lighting fixture 76.
Then, when a presence signal is input from the determination means 6 to the controller 90 and a lighting means of the illuminator 76 is output, if no signal is input from the determination signal 6 to the controller 90, the controller 90 outputs a turn-off signal. Then, the lighting fixture 76 is turned off.

When the illumination switch 76 is operated as described above and the illumination switch 74 is operated and an illumination signal is input again to the controller 90, the controller 90 outputs a lighting signal so that the illumination instrument 76 is turned on. May be.
Thereby, since the lighting fixture 76 can be turned on manually with the rectifying plate 50 removed, the operation of attaching the rectifying plate 50 is easy when the periphery of the hood 1 is dark.

  Further, the warning device 80 may be activated when no signal is input to the controller 90 from the determination means 6. In this case, the warning device 80 is operated for a predetermined time, and the warning device 80 can be operated again when the operation switch 7 is operated.

  In this way, the user of the range hood can sense that the current plate 50 is not present.

  DESCRIPTION OF SYMBOLS 1 ... Hood, 4 ... Blower, 4b ... Fan, 4c ... Motor, 5 ... Protective member, 6 ... Discriminating means, 50 ... Current plate, 56 ... Filter, 57 ... Cover plate, 57a ... Opening for ventilation, 76 ... Illuminating tool , 80 ... warning device, 90 ... controller.

Claims (4)

A range hood provided with a hood 1 and a blower 4,
A protective member 5 that faces the suction port 41 of the blower 4 and prevents a human hand from entering the suction port 41 can be removed from the hood 1 at a position upstream of the suction port 41 of the blower 4. And is provided with a judging means 6 for judging the presence or absence of the protective member 5,
When the determination means 6 determines that there is no protective member, the motor 4c that rotates the fan 4b of the blower 4 cannot be energized,
A warning device 80 is provided that operates for a predetermined time when the determination means 6 determines that there is no protective member, and operates again when the operation switch 7 for controlling energization of the motor 4c from the power source is operated. Range food. Illuminator that is turned on and off by manual operation when the judging means 6 judges that the protective member is present, and turns off when the judging means 6 judges that the protective member is present and no protective member in the lit state The range hood according to claim 1, wherein 76 is provided in the hood 1. When the judgment means 6 judges that the protection member is present, it is turned on and off by manual operation. When the judgment means 6 judges that the protection member is present from the presence of the protection member, the light is turned off. The range hood according to claim 1, wherein the hood is provided with a lighting device that is turned on manually. The range hood according to any one of claims 1 to 3 , wherein the protective member 5 is any one of a current plate 50, a filter 56, and a cover plate 57 having a ventilation opening 57a.

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