JP5614874B2 - Range hood fan - Google Patents

Description

  The present invention relates to a range hood fan which is installed above a cooking heater and collects combustion gas, oily smoke and the like generated by cooking.

  Conventionally, as a range hood fan that is installed above a cooking heater and collects combustion gas and oily smoke generated by cooking, the collected combustion gas and oily smoke as disclosed in Patent Document 1 are used. An outdoor exhaust type range hood fan that exhausts to the outside through a duct, and an indoor circulation type range hood fan that circulates the collected combustion gas, oily smoke, and the like indoors through a deodorizing unit as disclosed in Patent Document 2 are known. Yes.

Japanese Patent Laid-Open No. 5-340586 JP 2006-322648 A

The above-described range hood includes a hood, a blower, and a filter, and most of the oil and fat contained in the oil smoke generated by cooking is removed by the filter. Thereafter, the oil and fat not removed by the filter flows into the blower, and a part of the oil and fat is removed inside the blower.
Up to this point, most of the oil and fat contained in the oil smoke is removed, but it is extremely difficult to completely remove the oil and fat, and the oil and fat is slightly discharged from the discharge port of the blower.
For this reason, in the outdoor exhaust type range hood fan described above, a small amount of oil and fat flows from the blower outlet to the duct, and the oil and fat may adhere to the duct due to long-term use.
Therefore, when a flame occurs due to a fire or cooking (hereinafter referred to as a fire), the flame may blow out from the blower outlet, and the flame may enter the duct. There was a risk of duct fire due to ignited oil and fat adhering.

  In addition, in the case of the above-described indoor circulation type range hood fan, a flame blown out from the blower outlet at the time of a fire or the like may enter the deodorizing unit, and the flame may enter the room through the deodorizing unit. .

  The object of the present invention is to prevent the flame from blowing out from the outlet of the blower during a fire or the like. In the case of an outdoor exhaust type range hood fan, a duct fire does not occur due to the flame, and the indoor circulation type In the case of a range hood fan, the range hood fan is designed to prevent the flame from entering the room.

The present invention includes a hood 10, a filter 20, and a blower 30. By driving the blower 30, combustion gas, oil smoke, odor, and the like generated by cooking are discharged from the discharge port 30 a of the blower 30 through the filter 20. A range hood fan
The blower 30 is driven when energized and stopped when not energized,
Provided on the discharge side of the blower 30 is an electric shutter 40 that operates in a closed state that closes the discharge side and an open state that opens the discharge side,
An energization control means 60 for energizing the blower 30 and the electric shutter 40 is provided;
When the electric shutter 40 is energized, the shutter 41 is moved to the open position by energizing the shutter electric motor 42, and when the electric motor 42 is not energized, the shutter 41 is moved to the closed position by the biasing force. To keep it closed,
The energization control means 60 is provided in a control unit 61 that controls energization of the blower 30 and the shutter electric motor 42 based on an operation command from the operation unit 62, and a power supply circuit 14 that connects the control unit 61 and the power source 63. Switch means 65,
The switch means 65 is provided other than the air flow passage of the hood 10 and is a temperature sensitive switch that is turned off when the temperature around the hood 10 is equal to or higher than the set temperature and turned on when the temperature is lower than the set temperature.
The range hood fan is characterized in that the power supply circuit 64 is cut off when the temperature around the hood 10 is equal to or higher than a set temperature.

In the present invention, the blower 30 rotates the fan 32 by energizing the fan electric motor 33, and the fan 32 stops if the fan electric motor 33 is not energized,
The controller 61 of the energization controller 60 can control the energization of the fan electric motor 33 based on an operation command from the operation unit 62.

In this way, no matter what state the controller 61 is in, when the temperature around the hood 10 is equal to or higher than the set temperature, the controller 61 is not energized, and as a result, the fan electric motor 33 is not energized. The blower 30 can be stopped without malfunction.
Therefore, it is possible to reliably prevent a flame from blowing out from the discharge port 30a of the blower 30 during a fire or the like.

In the present invention, the outlet of the electric shutter 40 communicates with the inlet side of the deodorizing unit 50,
The outlet side of the deodorizing unit 50 can be communicated with the room.

If it does in this way, it can be set as an indoor circulation type range hood fan.
In addition, no flame is blown into the deodorizing unit 50 during a fire or the like.

According to the present invention, since the discharge port 30a of the blower 30 is closed by the electric shutter 40 and the blower 30 is stopped in the event of a fire or when a flame is generated by cooking, the blower 30 is stopped. Since 30 does not suck the flame and discharge it from the discharge port 30a, it is possible to reliably prevent the flame from blowing out from the discharge port 30a of the blower 30 during a fire or the like.
Therefore, in the case of an outdoor exhaust type range hood fan, a duct fire does not occur due to the flame, and in the case of an indoor circulation type range hood fan, the flame can be prevented from entering the room.
Also, if the electric motor for shutter 42 of the electric shutter 40 is not energized, the electric shutter 40 is closed and the fan 30 is not energized unless the fan 30 is energized. Since the electric shutter 40 is in a closed state and the blower 30 is stopped when the disconnection or the like occurs, it is ensured that a flame blows out from the discharge port 30a of the blower 30 in the event of a fire or the like even in the event of the foregoing. Can be prevented.
In addition, no matter what state the controller 61 is in, when the temperature around the hood 10 is equal to or higher than the set temperature, the controller 61 is not energized. As a result, the fan 30 and the shutter electric motor 42 are not energized. The blower 30 and the shutter electric motor 42 are always stopped and closed without malfunction.
Therefore, it is possible to reliably prevent a flame from blowing out from the discharge port 30a of the blower 30 during a fire or the like.
Further, a thermostat may be used as the switch means 65, and the power supply circuit 64 may be shut off with the thermostat, and the controller 61 can be reliably prevented from energizing without malfunction.

1 is an overall side view showing an embodiment of the present invention. It is a partially broken enlarged side view of a range hood fan. It is explanatory drawing of an electricity supply control means.

As shown in FIG. 1, the range hood fan 2 of the present invention is installed above the cooking heater 1.
The cooking heater 1 is an electromagnetic induction heating cooker (IH cooking heater) placed on the cabinet 3, but is not limited thereto, and may be an electric stove, a gas combustion heating cooker, or the like.
The range hood fan 2 includes a hood 10, a filter 20, and a blower 30, and the blower 30 sucks combustion gas, oily smoke, odor, and the like generated by cooking by driving the blower 30 through the filter 20, and its discharge port 30a. To discharge from.

An electric shutter 40 is provided on the discharge side of the blower 30.
The electric shutter 40 operates in a closed state and an open state.
When the electric shutter 40 is in the closed state, the discharge side portion of the blower 30 is closed so that the combustion gas, oil smoke, odor, etc. sucked by the blower 30 cannot be discharged from the discharge port 30a.
When the electric shutter 40 is in an open state, the discharge side portion of the blower 30 is opened so that combustion gas, oil smoke, odor, etc. sucked by the blower 30 can be discharged from the discharge port 30a.

In the range hood fan shown in FIG. 1, the outlet of the electric shutter 40 communicates with the intake side of the deodorizing unit 50.
This deodorizing unit 50 removes the soot of the combustion gas sucked by the blower 30, the oil and fat content of the oil smoke, the odor, and the like to obtain clean air.
The deodorizing unit 50 is installed on the upper surface of the hood 10 and is covered with a curtain plate 4.
The exhaust side of the deodorizing unit 50 communicates with the room through the opening of the curtain plate 4 and circulates the air cleaned as described above into the room.
Thus, it is an air circulation type range hood fan.

As an outdoor exhaust type range hood fan that exhausts combustion gas, oil smoke, odor, etc. sucked by the blower 30 by connecting a duct to the outlet of the electric shutter 40 and disposing the duct to the outdoor side. Also good.
In this case, the deodorizing unit 50 may not be provided, but the duct may be connected to the exhaust side of the deodorizing unit 50.

The electric shutter 40 operates in an open state when the range hood fan 2 is operating (when the blower 30 is driven), and the temperature around the hood 10 is set to a set temperature (for example, 80 ° C.). When it exceeds, that is, when the temperature is higher than the set temperature, it is operated in a closed state.
For example, when the electric shutter 40 is energized, it operates in the open state, and when the electric shutter 40 is not energized, it operates in the closed state and holds in the closed state.
The energization control means 60 controls the energization of the electric shutter 40, and the energization control means 60 is prevented from energizing the electric shutter 40 when the temperature around the hood 10 exceeds the set temperature as described above.

In this way, when a flame is generated by a fire or cooking (hereinafter referred to as a fire), the flame reaches the hood 10 and the energization occurs when the temperature around the hood 10 rises above the set temperature. Since the electric shutter 40 is closed by preventing the control means 60 from energizing the electric shutter 40, the above-described flame can be prevented from blowing out from the discharge port 30 a of the blower 30.
At this time, even when the blower 30 is in the driving state and sucks the flame and blows out strongly from the discharge port 30a, since the electric shutter 40 is in the closed state, it is possible to prevent the flame from blowing out from the discharge port 30a.

  Therefore, in the case of a fire or the like, a flame does not blow out from the discharge port 30a of the blower 30, and in the case of an indoor circulation type range hood fan, the flame does not enter the room, and in the case of an outdoor exhaust type range hood fan. There is no duct fire caused by the flame.

You may make it the said electricity supply control means 60 stop the air blower 30, when the temperature around the food | hood 10 is more than preset temperature.
For example, the blower 30 is driven when energized, stopped when not energized, and the energization control means 60 is configured not to energize the blower 30 when the temperature around the hood 10 is equal to or higher than the set temperature. To do.

  In this way, when the electric shutter 40 is closed in the event of a fire or the like, the blower 30 that has been driven stops, so the blower 30 does not suck in flames, so the flame is discharged from the discharge port 30a of the blower 30. Can be surely prevented from blowing out.

As shown in FIG. 2, the hood 10 of the range hood fan 2 has a box shape in which a lower surface is opened by a top plate 11 and a peripheral plate 12, and an upper support plate 13 and a lower support plate 14 are formed on the inner surface of the hood 10. It is provided.
A filter 20, such as a grease filter, is attached across the upper support plate 13 and the lower support plate 14 to form a suction space 15 in the hood 10.
A rectifying plate 21 is attached to face the filter 20.
The blower 30 is configured such that a fan 32 (sirocco fan) is provided in a housing 31 and the fan 32 is rotationally driven by a fan electric motor 33.
The housing 31 is connected to the top plate 11 of the hood 10 and the blower 30 is mounted in the hood 10. The suction port 30 b communicates with the suction space 15 of the hood 10, and the fan 32 is driven to rotate by the fan electric motor 33. Thus, combustion gas, oil smoke, odor, etc. generated by cooking are sucked from the suction port 30b through the filter 20 and discharged from the discharge port 30b.

The shape of the hood 10 is not limited to that shown in FIG. 2 and can be any shape.
The filter 20 is not limited to the grease filter, and the rectifying plate 21 may not be provided. The filter 20 may be provided in the housing 31 of the blower 30.
The blower 30 may be attached to the outside of the hood 10.
In short, the range hood fan of the present invention includes the hood 10, the filter 20, and the blower 30, and drives the blower 30 to discharge combustion gas, oily smoke, odor, and the like generated by cooking from the discharge port 30 a through the filter 20. Anything is fine.

The electric shutter 40 includes a shutter 41 and a shutter electric motor 42, and the shutter electric motor 42 moves the shutter 41 to an open position and a closed position.
For example, the shutter 41 is biased toward the closed position by a spring so that the shutter 41 is held at the closed position, and the shutter 41 is moved toward the open position when the shutter electric motor 42 is driven to rotate. It is.
When the shutter electric motor 42 is stopped without being energized, when the electric motor 42 is energized and rotationally driven, the shutter 41 moves to an open position indicated by a virtual line in FIG. The shutter 40 is in an open state.
In the above-described state, when the energization of the shutter electric motor 42 is stopped and stopped, the shutter 41 automatically moves to the closed position shown by the solid line in FIG. 2, and the electric shutter 40 automatically enters the closed state. .

An electric shutter 40 shown in FIG. 2 is provided with a shutter 41 in a cylindrical body 43 so as to be swingable between an open position and a closed position, and the shutter 41 is urged and held in a closed position by a spring. At 42, the shutter 41 is swung toward the open position.
The cylinder 43 is provided with a sensor 44 that detects that the shutter 41 is in the open position. As the sensor 44, a switch that is turned on when the shutter 41 is in contact is used, but other means may be used.
And the discharge port 30a is opened and closed by communicating the cylinder 43 with the discharge port 30a of the blower 30.

The electric shutter 40 is not limited to that described above, and any shutter can be used.
For example, the shutter 41 can be an electric shutter that directly opens and closes the discharge port 30a of the blower 30.
Specifically, the shutter 41 is provided so as to be slidable along the housing 31 or the hood 10 of the blower 30 between the open position and the closed position, and means for converting the rotation of the shutter electric motor 42 into a reciprocating motion (rack The shutter 41 is slid to an open position and a closed position by a pinion, a cam, a link mechanism, or the like.

The deodorizing unit 50 has an oil decomposition filter 52, a deodorizing filter 53, and a dust removing filter 54 attached in a case 51. The case 51 is attached to the upper surface of the top plate 11 of the hood 10, and the intake port 55 of the case 51 communicates with the outlet of the electric shutter 40. The case 51 is located in the curtain plate 4 and is covered with the curtain plate 4 so that the case 51 cannot be seen when viewed from the room.
An exhaust port 56 is formed in the upper portion of the case 51.

Thus, when the blower 30 is driven and the electric shutter 40 is in an open state, combustion gas, oil smoke, odor, and the like discharged from the blower 30 are transferred from the electric shutter 40 to the intake port 55 of the case 51. The oil is removed by the oil decomposition filter 52, the odor is removed by the deodorizing filter 53, and the dust is removed by the dust removing filter 54 to obtain clean air.
Then, clean air flows out from the exhaust port 56 and circulates through the opening of the curtain plate 4 into the room.

As shown in FIG. 2, the energization control means 60 is attached to the front portion of the hood 10.
As shown in FIG. 3, the energization control means 60 includes a control unit (control board) 61 that controls energization of the fan electric motor 33 of the blower 3 and the shutter electric motor 42 of the electric shutter 40, and the control unit 61. An operation unit 62 that sends a control command to the power supply circuit 64, and a power supply circuit 64 that connects the control unit 61 and the power source 63, and a switch means 65 that shuts off and connects the power supply circuit 64. A detection signal of the sensor 44 of the electric shutter 40 is sent to the control unit 61.

The operation unit 62 includes a turn switch 66 for sending a turn command, a drive switch 67 for sending a run command, for example, a weak run switch 67a for sending a weak run command, a medium run switch 67b for sending a mid run command, and a strong run for sending a strong run command. A switch 67c, a remote control light receiving unit 68 that receives a command from the remote control, and the like are included.
The switch means 65 is a temperature-sensitive switch that turns on and off at a sensed temperature, for example, a thermostat, and when it detects a temperature above the set temperature, it turns off and shuts off the power supply circuit 64 to reduce the temperature below the set temperature. When it is sensed, the power supply circuit 64 is connected by turning on.
The switch means 65 is provided at a lower portion near the front portion of the hood 10 and senses the temperature around the hood 10 to turn on and off.

The switch means 65 includes a switch that cuts off / connects the power supply circuit 64 and a temperature sensor that detects the temperature around the hood 10. The temperature detected by the temperature sensor is input to the controller 61, and the temperature sensor When a temperature equal to or higher than the set temperature is detected and input to the control unit 61, the control unit 61 turns off the switch. When the temperature sensor detects a temperature equal to or lower than the set temperature and inputs it to the control unit 61, the control unit 61 switches the switch. May be turned on.
That is, the switch means 64 is configured not to supply electricity to the control unit 61 when the temperature around the hood 10 is equal to or higher than the set temperature, and to supply electricity to the control unit 61 when the temperature is lower than the set temperature.

In this manner, when the temperature around the hood 10 is equal to or higher than the set temperature, the switch unit 65 is turned off and the control unit 61 and the power source 63 are shut off, so that electricity is not supplied to the control unit 61.
Therefore, no matter what the control unit 61 is in the control state, electricity is not supplied to the electric motor 33 for the fan and the electric motor 42 for the shutter, and each electric motor stops immediately. Blowing out from the 30 discharge ports 30a can be reliably prevented.
The control unit 61 deletes the control command sent from the operation unit 62 when the switch unit 65 is turned off and electricity is not supplied.

Next, the operation will be described.
When the range hood fan is stopped, the electric motor 33 for the fan is stopped without being energized, the blower 30 is stopped, the electric motor for the shutter 42 is stopped without being energized, and the shutter is stopped. Reference numeral 41 denotes a closed position, and the electric shutter 40 is in a closed state.
When the operation switch 67 of the operation unit 62 is operated from the above state, an operation command is sent to the control unit 61.
The controller 61 energizes the shutter electric motor 42 to place the shutter 41 in the open position and to open the electric shutter 40.
Thereafter, when a predetermined time, for example, t1 seconds elapses, the control unit 61 energizes the fan electric motor 33 to drive the blower 39.
Thereby, the blower 30 sucks combustion gas, oily smoke, odor, and the like generated by cooking, and discharges them from the discharge port 30a through the electric shutter 40 to the deodorizing unit 50, thereby starting the range hood fan.

As described above, since the blower 30 is driven after the electric shutter 40 is opened, no noise is generated from the electric shutter 40 when the range hood fan is started.
That is, if the blower 30 is driven before the electric shutter 40 is fully opened, abnormal noise is generated by the air flow passing through the electric shutter 40.

Since the electric shutter 40 shown in FIG. 2 includes a sensor 44 that detects that the shutter 41 is in the open position, when the detection signal of the sensor 44 is sent to the control unit 61, the control unit 61 The electric motor 33 may be energized.
In this way, the fan electric motor 33 is not energized with a time delay, but is confirmed after the shutter 41 is in the open position (that is, the electric shutter 40 is in the open state). Since power is supplied to 33, it is excellent in reliability, and it is possible to reliably prevent abnormal noise from being generated from the electric shutter 40 when the range hood fan is activated.

  Further, since the electric shutter 40 includes the sensor 44 described above, a detection signal is output from the sensor 44 even after a predetermined time, for example, t2 seconds (t1 <t2) has elapsed since the operation switch 67 was operated as described above. If not sent to the control unit 61, the control unit 61 determines that it is abnormal, shuts off the power supply of the blower 30 and the electric shutter 40, and the control unit 61 operates a lamp or an alarm to indicate an abnormal state. The user can be notified by a lamp or a warning sound.

For example, as shown in FIG. 3, a switch 70 is provided in a power supply circuit 64 that connects the controller 61 and the power supply 63, and a warning means 71 such as a lamp or an alarm device is provided.
When the detection signal of the sensor 44 is not input to the control unit 61 even after t2 seconds have elapsed since the operation command is sent from the operation switch 67 to the control unit 61, the control unit 61 turns off the switch 70 to turn off the power supply circuit 64. And the warning means 71 is activated.

When the range hood fan is in operation as described above, if a fire occurs or a flame is generated by cooking, and the temperature around the hood 10 becomes equal to or higher than the set temperature, the switch means 65 is activated. Turn off.
As a result, the controller 61 and the power source 63 are cut off, so that the fan electric motor 33 and the shutter electric motor 42 are not energized, the blower 30 is stopped, and the electric shutter 40 is closed.

  Therefore, when a fire occurs or a flame is generated by cooking, it is possible to prevent the flame from blowing out from the discharge port 30a of the blower 30.

  As described above, when the switch unit 65 is turned off in the event of a fire or the like, the blower 30 is stopped, and the electric shutter 40 is closed, when the temperature around the hood 10 falls below the set temperature, the switch unit 65 is turned off. Is turned on and the control unit 61 is energized, but since the operation command (operation command) sent to the control unit 61 has been deleted as described above, the fan electric motor 33 and the shutter electric motor 42 are energized. The blower 30 remains stopped and the electric shutter 40 remains closed.

  In each description above, the blower 30 is stopped and the electric shutter 40 is closed when the temperature around the hood 10 is equal to or higher than the set temperature, but the blower 30 may not be stopped.

  DESCRIPTION OF SYMBOLS 1 ... Cooking appliance, 2 ... Range hood fan, 10 ... Hood, 20 ... Filter, 30 ... Blower, 30a ... Discharge port, 31 ... Housing, 32 ... Fan, 33 ... Electric motor for fan, 40 ... Electric shutter , 41 ... shutter, 42 ... shutter motor, 50 ... deodorizing unit, 60 ... energization control means, 61 ... control part, 62 ... operation part, 63 ... power supply, 64 ... power supply unit, 65 ... switch means, 67 ... operation switch.

Claims (3)

A range hood fan that includes a hood 10, a filter 20, and a blower 30, and that drives the blower 30 to discharge combustion gas, oily smoke, odor, and the like generated by cooking from the discharge port 30 a of the blower 30 through the filter 20. There,
The blower 30 is driven when energized and stopped when not energized,
Provided on the discharge side of the blower 30 is an electric shutter 40 that operates in a closed state that closes the discharge side and an open state that opens the discharge side,
An energization control means 60 for energizing the blower 30 and the electric shutter 40 is provided;
When the electric shutter 40 is energized, the shutter 41 is moved to the open position by energizing the shutter electric motor 42, and when the electric motor 42 is not energized, the shutter 41 is moved to the closed position by the biasing force. To keep it closed,
The energization control means 60 is provided in a control unit 61 that controls energization of the blower 30 and the shutter electric motor 42 based on an operation command from the operation unit 62, and a power supply circuit 14 that connects the control unit 61 and the power source 63. Switch means 65,
The switch means 65 is provided other than the air flow passage of the hood 10 and is a temperature sensitive switch that is turned off when the temperature around the hood 10 is equal to or higher than the set temperature and turned on when the temperature is lower than the set temperature.
A range hood fan characterized in that the power supply circuit 64 is cut off when the temperature around the hood 10 is equal to or higher than a set temperature. The blower 30 rotates the fan 32 by energizing the electric motor 33 for the fan, and stops the fan 32 if the electric motor 33 for the fan is not energized,
The range hood fan according to claim 1, wherein the controller 61 of the energization controller 60 controls energization of the electric motor 33 for the fan based on an operation command from the operation unit 62. Communicating the outlet of the electric shutter 40 to the inlet side of the deodorizing unit 50;
The range hood fan according to claim 1 or 2, wherein an outlet side of the deodorizing unit 50 is communicated with the room.

Images