JPH02238238A - Ventilating device - Google Patents

Abstract

PURPOSE:To assure a purifying function with small power by providing a filter having a self-purifying function covered with a catalysis with which only dust and the like in air are captured into an intake vent and decomposed, and a movable reflecting plate incandescence ignition heater for heating and purifying said filter in succession from the end of the same. CONSTITUTION:Once a switch 18 is turned to an exhaust side of a fan motor 6 upon cooking, an exhaust fan 7 is rotated and hereby any soot 8 produced from a cooking pan 2 is absorbed into a filter 10 to permit oily dust 9 to be adhered to and captured by the filter 10. Air purified and cleaned is exhausted from an exhaust vent 12 to the outside of a room substantially without contaminating the exhaust fan 7 and the inside of the body. When the switch 18 is turned to a purification side periodically, the heater 14 supplied with power becomes red-hot, and heat rays radiated from the surface of the heater heats a filter 10 portion located in close vicinity thereto to 300 deg.C directly or via a reflecting plate 13. Further, the oily dust is oxidized and decomposed by an oxidizing catalysis. After the elapse of certain time a driving motor 17 is actuated to slightly shift the position of the heater 14 for heating and purifying a non-purified portion of the filter 10 in succession. Thus, there is not required high electric power.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ventilation system for use in kitchen rooms.

Conventional technology Conventionally, a type of ventilation device that sucks in the oil smoke generated during cooking, attaches the oil dust to a filter, purifies it, and then exhausts it, has a filter coated with a self-purification catalyst and a heater for heating the purification catalyst attached to it. Mount it in contact with the surface. things (
For example, Japanese Unexamined Patent Publication No. 56-62520) has been proposed.

Problems to be Solved by the Invention With such a conventional configuration, a large amount of electric power is required to raise the entire temperature to the temperature (approximately 300°C) at which the filter's purifying function works, and the filter part is always in contact with indoor air. The heat utilization efficiency was poor, and the high-temperature filter section was exposed, making it unsafe.

The present invention has been made with the above-mentioned problems in mind, and a first object thereof is to enable the purification function to work with small electric power. The second purpose is to improve heat utilization efficiency and safety. The third purpose is to improve the durability of the purification function.

Means for Solving the Problems In order to achieve the first object, a first means of the present invention includes a device main body having an intake port and an exhaust port, an exhaust fan attached to the exhaust port, and an exhaust fan attached to the intake port. A ventilation system comprising a filter having a self-purifying function coated with a catalyst that captures and decomposes oil dust, etc. in the air, and a moving reflector-type incandescent heater that sequentially heats and purifies the filter from the end. The structure is as follows.

A second means for achieving the second purpose includes a device body having an intake port and an exhaust port, an exhaust fan attached to the exhaust port, and a device that traps oil dust, etc. in the air at the intake port. A filter with a self-purifying function coated with a decomposing catalyst;
The ventilator is configured to include a flap that faces the filter when closed, and a moving reflector type incandescent heater that sequentially heats and purifies the filter from the end when the flap is closed.

A third means for achieving the third purpose is to include a device main body having an intake port and an exhaust port, an exhaust fan attached to the exhaust port, and a device that traps oil dust, etc. in the air at the intake port. A filter with a self-purifying function coated with a decomposing catalyst;
A movable reflective incandescent heater having a flap that faces the filter when closed and has a purification catalyst adhered to the opposite side, and a reflector that sequentially heats and purifies the filter and the flap from the end when the flap is closed. The ventilation device has a structure in which the reflection plate surface is coated with a purification catalyst.

Effect: Due to the configuration of the first means, when oil dust adheres to and accumulates on the filter, when the movable reflective incandescent heater is driven, the heat is transferred sequentially from the end of the filter, activating the self-cleaning function of the filter. This will break down the oil dust.

With the configuration of the second means, when oil dust adheres and accumulates on the filter, the main body is closed with a flap and the movable reflective incandescent heater is driven to sequentially heat the end of the 7-μ pattern. By preventing radiation of heat reflected from the flap surface and by closing the main body with the flap, the purifying function of the filter is activated quickly and oil dust is decomposed.

According to the configuration of the third means, when oil dust adheres to and accumulates on the filter, the main body is closed with a flap and the movable reflective incandescent heater is driven to sequentially heat the end of the filter. In addition, heat dissipation due to the closure of the main body is prevented, and oil dust adhering to the filter, the inner surface of the flag, and the three parts of the reflector is decomposed.

Embodiment First, an embodiment according to the first means of the present invention will be described based on FIG. In the figure, reference numeral 1 denotes a table stove that uses gas or electricity as a heat source.A cooking pot 2 is placed on top of the table stove 1, and a stove stand 3, which is a stand, is placed below the table stove 1 on a wall surface 6. is installed adjacent to. Reference numeral 4 denotes an oil removal device main body (hereinafter referred to as main body), which is tilted forward and installed on the wall surface 5 so as to cover the tape stove 1, and a blower motor 6 with an exhaust fan 7 attached to the back of the main body 4. is fixed, and the exhaust fan 7 faces the exhaust port 12 of the wall surface 5. A filter 10 for capturing oil smoke 9 in oil smoke 8 generated from the cooking pot 2 is installed at the front part of the main body 4 facing the exhaust fan 7. The surface is coated with a porous self-cleaning hollow containing metal oxides such as a low-temperature oxidation catalyst that oxidizes and decomposes oil at 200-300°C, such as silicon dioxide SIQ2, boron oxide B2o3, sodium oxide Na20, and alumina A1203. This is what happens.

On the other hand, a rod-shaped incandescent heater (hereinafter referred to as a heater) 14 having a reflecting plate 13 is provided on the inner surface of the main body 4 near the filter 10.
is fixed to the reflecting plate 13 by insulators 16 at both ends, and the reflecting plate 13 is fitted into grooves 16 provided at the top and bottom of the main body 4, and can be moved from one end of the filter 1o to the other by a driving motor 17. It becomes. In front of the main body 4 is a switch 18 that allows you to select whether to operate the blower motor 6 or to the purification side, which energizes the heater 14 and drive motor 17.
is installed.

In the above configuration, the cooking switch 18 is connected to the blower motor 6.
When set to the exhaust side, the exhaust fan 7 rotates, oil smoke 8 generated from the cooking pot 2 is sucked into the filter 1o, oil dust 9 is attached to the filter 1o, and the purified air is sent to the exhaust fan 7 and the main body. The air is discharged outside through the exhaust port 12 without contaminating the interior of the air outlet 4. The intake port 11 of the filter 1o becomes gradually clogged due to the accumulation of oil dust 9, so when the switch 18 is periodically set to the purification side, the energized heater 14 becomes red hot and radiates from its surface. The heat rays are applied directly to the part of the filter 1o that is close to the heater 14, or directly to the part of the filter 1o that is close to the heater 14.
Heat to approximately 300°C via 3. 7 μta 10 is about 3
When heated to 00° C., the oil dust adhering to the surface of 7-inoleta 1o is oxidized and decomposed by the action of the oxidation catalyst. After a certain period of time, the drive motor 17 is activated and the position of the heater 14 is slightly shifted to sequentially heat and purify the unpurified portions of the filter 10. Therefore, a large amount of electric power is not required at once, and the heater 14 moves from one end of the filter 1o to the other. When the filter 1o is completely moved, the purification of the filter 1o is completed.

Next, an embodiment according to the second means of the present invention will be described based on FIG. In the figure, 1 is a tape stove that uses gas or electricity as a heat source, a cooking pot 2 is placed on top of the table stove 1, and a stove stand 3, which is a stand, is placed on the wall below the table stove 1. It is located adjacent to 5. Reference numeral 4 denotes an oil removal device main body (hereinafter referred to as the main body), which is installed on the wall surface 6 tilted forward so as to cover the table stove 1, and a blower motor 6 equipped with an exhaust fan 7 is mounted on the back of the main body 4. The exhaust fan 7 faces the exhaust port 12 of the wall surface 6. A filter 1o that captures oil dust 9 in oil smoke 8 generated by the cooking pot 2 is installed at the front part of the main body 4 facing the exhaust fan 7. A porous self-cleaning hollow containing metal oxides such as silicon dioxide sio2, boron oxide B2o3, sodium oxide Na20, and anolemina Ae2Q3 is coated on its surface with a low-temperature oxidation catalyst that oxidizes and decomposes oil at 200 to 300°C. It is formed by forming a coating.

On the other hand, a rod-shaped incandescent heater (hereinafter referred to as a heater) 14 having a reflecting plate 13 is provided on the inner surface of the wooden body 4 near the filter 10.
is fixed to the reflecting plate 13 by insulators 15 at both ends, and the reflecting plate 13 is fitted into grooves 16 provided at the top and bottom of the main body 4 and can be moved from one end of the filter 1o to the other by a driving motor 17. It becomes. In front of the filter 10, a flap 19 that can be opened and closed is attached to the main body 4, and in front of the main body 4, it is possible to select whether to operate the blower motor e or to the purification side, which energizes the heater 14 and the drive motor 17. A switch 18 is attached to the purification side contact of the nwitch 18, and a limit switch 2o is attached to the main body 4, which enables energization on the purification side only when the flap 19 is closed facing the filter 10. electrically connected.

In the above configuration, the cooking switch 18 is connected to the blower motor 6.
When set to the exhaust side, the exhaust fan 7 rotates, oil smoke 8 generated from the cooking pot 2 is sucked into the filter 1o, oil dust 9 is collected on the filter 10, and the purified air is sent to the exhaust fan or the main unit. The air is discharged outside through the exhaust port 12 without contaminating the interior of the air outlet 4. Since the filter 1o gradually becomes clogged due to the adhesion of oil dust 9, the flap 19 is periodically closed facing the filter 1o, and when the switch 18 is set to the purification side, the heater 14 is energized, and the heater 14 becomes red hot. The heat rays radiated from the surface heat the portion of the filter 1o that is close to the heater 14 directly or via the reflection plate 13. Further, since the flap 19 is in a closed state at that time, the convection phenomenon of the filter 10 is suppressed, and the temperature of about 300° C. required for oxidative decomposition of oil dust adhering to the surface of the filter 10 is suppressed.
Heating is performed efficiently, and the high-temperature part is not exposed indoors, allowing partial purification of the filter 1o. Furthermore, after a certain period of time, the drive motor 17 is activated and the position of the heater 14 is slightly shifted to sequentially heat and purify the unpurified portions of the filter 1o. Once the filter 1o has moved from the end to the end, the cleaning of the filter 1o is completed.

Next, an embodiment according to the third means of the present invention will be described based on FIG. 3. In the figure, reference numeral 1 denotes a table stove that uses gas or electricity as a heat source.A cooking pot 2 is placed on the table stove 1, and a stove stand 3, which is a stand, is placed below the table stove 1 on a wall surface 5. is installed adjacent to. Reference numeral 4 denotes an oil removal device main body (hereinafter referred to as the main body), which is tilted forward and installed on the wall surface 6 so as to cover the table stove 1, and a blower motor e equipped with an exhaust fan 7 is mounted on the back of the main body 4. The exhaust fan 7 faces the exhaust port 12 of the wall surface 6. The cooking pot 2 is located at the front of the main body 4 facing the exhaust fan 1 and 7. A filter 10 is installed to capture oil dust 9 in smoke 8, and this filter 0 is made of punched metal having an intake port 11 on its entire surface.
A low-temperature oxidation catalyst that oxidizes and decomposes oil at 0 to 300°C.For example, it is formed by coating a porous 7-ruf cleaning hollow containing metal oxides such as silicon dioxide S10, boron oxide B203, sodium oxide Nap, and alumina Al203. It is something.

On the other hand, on the inner surface of the main body 4 close to the filter o, a rod-shaped incandescent heater (hereinafter referred to as heater) 14 having a purification reflection plate 21 coated with an oxidation purification catalyst is fixed to the purification reflection plate 21 with insulators 16 at both ends. The purifying reflection plate 21 is fitted into a groove 16 provided at the top and bottom of the main body 4, and can be moved from one end of the filter 0 to the other by a driving motor 7.

In addition, in front of the filter 0, a purification flap 23 that can be opened and closed and has an oxidation purification agent 22 coated on the inner surface is attached to the main body 4.
A switch 18 is attached to the front of the main body 4 to select whether to operate the blower motor 6 or to the purification side which supplies electricity to the heater 4 and drive motor 7. A limit switch 20 is attached to the main body 4 and electrically connected thereto.The limit switch 20 enables energization on the purifying side only when the purifying flap 23 is closed facing the filter 1o.

In the above configuration, the cooking switch 18 is connected to the blower motor 6.
When set to the exhaust side, the exhaust fan 7 rotates, oil smoke 8 generated from the cooking pot 2 is sucked into the filter 10, oil dust 9 is collected on the filter 1o, and the purified air is sent to the exhaust fan 7 and the main unit. The air is discharged outdoors from the exhaust port 12 without contaminating the interior of the air outlet 4. The filter 10 gradually becomes clogged due to the adhesion of oil dust 9, so the filter 10 is periodically cleaned using the cleaning filter 2.
3 is closed facing the filter 10, and the switch 18 is set to the purification side, the heater 14 is energized, the heater 14 becomes red hot, and the heat rays radiated from its surface directly hit the part of the filter 10 that is close to the heater 14. , or purification reflector 2
Heat through 1. Furthermore, since the purification flap is in the closed state at that time, the convection phenomenon in the filter 10 is suppressed, and the heating to about 300° C. or higher necessary for oxidative decomposition of the oil dust adhering to the surface of the filter 10 is quickly performed. On the other hand, the inner surface of the flap 23 and the surface of the purifying reflector 21 become dirty as oil dust 9 in the oil smoke 8 generated from the cooking pot 2 adheres little by little. During heating, the purifying reflector plate 21 is also heated by the radiant heat of the heater 14, and the attached oil dust is oxidized and decomposed, and partial purification is performed without exposing the high-temperature part indoors.

Also, after a certain period of time, the drive motor 17 operates and the heater 1
Filter 10 and flap 2 by slightly shifting the position of 4.
Since the unpurified parts of 3 are successively heated and purified, a large amount of electric power is not required at once, and the purification is completed when the heater 14 finishes moving from one end of the filter 10 and the flap 23 to the other.
Since the surface of the purifying reflector 21 is also purified, dirt due to pond dust 9 will not accumulate more and more, and there will be no fear of ignition when heated by the heater 14.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the entire area where oil dust is attached is not heated and purified at the same time, but is partially heated and purified starting from the end and transferred sequentially. Even if the overall power consumption does not change, the amount of power consumed per unit time is relatively small, and there is no need for a special dedicated electric circuit in a general household. In addition, by providing the flap, convective heat loss can be reduced and energy utilization efficiency can be increased, and high temperature parts are not exposed indoors during heating and purification, making it safer. Furthermore, by providing a purifying function to areas other than the filter where oil dust tends to adhere, there is no danger that oil dust will accumulate during long-term use and cause a fire during heat treatment, making it safer. This has the effect of providing a practical ventilation device.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a ventilation device showing an embodiment of the first means of the present invention, FIG. 2 is a cross-sectional view of a ventilation device showing an embodiment of the second means, and FIG. 1 is a sectional view of a ventilation device showing an embodiment of the means; FIG. 4...Device body, 7...Exhaust fan,
1o...Filter, 11...Intake port,
12... Exhaust port, 14... Heater, 1
9...Flap, 21...Reflector, 2
3...Flap. Name of agent: Patent attorney Shigetaka Awano and 1 other person 41 1 main body 41 table 1 salary 11-, D response. Mouth 12-JlY Miro + + --- Il and air mouth 12 Ittosha table 0 14-1? Ichita

Claims (3)

[Claims] (1) A device body with an intake port and an exhaust port, an exhaust fan attached to the exhaust port, and a self-purification function in which the intake port is coated with a catalyst that captures and decomposes oil and dust in the air. 1. A ventilation device comprising: a filter; and a moving reflector-type incandescent heater that sequentially heats and purifies the filter from an end. (2) It has a self-purification function that includes a device main body having an intake port and an exhaust port, an exhaust fan attached to the exhaust port, and a catalyst that captures and decomposes oil and dust in the air on the intake port. A ventilation device comprising a filter, a flap that faces the filter when closed, and a moving reflector-type incandescent heater that sequentially heats and purifies the filter from an end when the flap is closed. (3) It has a self-purification function that includes a device main body having an intake port and an exhaust port, an exhaust fan attached to the exhaust port, and a catalyst that captures and decomposes oil and dust in the air on the intake port. A movable reflective type comprising a filter, a flap that faces the filter when closed and has a purification catalyst adhered to the opposite side, and a reflector that sequentially heats and purifies the filter and the flap from the end when the flap is closed. A ventilation device equipped with a red-hot heater and coated with a purification catalyst on the surface of the reflection plate.