JP2006266608A - Range hood with voc eliminating function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a range hood with a VOC eliminating function of simple structure making effective use of hot air exhausted outdoors regardless of the degree of smoke and smell of hot air generated during cooking. <P>SOLUTION: A VOC adsorbing means is provided in the range hood, and during VOC eliminating operation, indoor intake air is exhausted indoors after eliminating VOC by the VOC adsorbing means. During VOC regenerating operation, intake hot air generated when cooking equipment is operated, is utilized for the heating regeneration of the VOC adsorbing means. Hot air exhausted outdoors can thereby be effectively utilized regardless of the degree of smoke and smell. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a range hood with a VOC removal function having a function of removing volatile organic compounds (VOC) such as formaldehyde, acetaldehyde, toluene, and xylene.

  Patent Document 1 does not impair the appearance or aesthetics of a building, does not spoil odors to people passing through nearby houses or neighborhoods, and does not impair the indoor aesthetics. A range hood is described that includes an ion generator, a filter for purifying air, an air curtain and the like, and a circulation type air purifier that does not require an exhaust duct.

  Patent Document 2 discloses a range hood characterized in that air that has low heat and smoke that flows into the range hood is returned to the room as warm air, and the hot air that has been exhausted in the past is effectively used for room heating. Is described.

Patent Document 3 describes an air circulation type air purifier that removes VOC in the intake air by performing an adsorption process, decomposes and removes it by heating, and exhausts it into the intake space in order to remove VOC in the air. Has been.
JP 2003-114041 A JP-A-5-231688 JP-A-10-314542

  The range hood of Patent Document 1 is configured by combining an ozone generator, an ion generator, and a device having an air cleaning function such as a filter for purifying air for air purification.

The range hood of Patent Document 1 is a range hood that completely cleans the air sucked from indoors and discharges the air into the indoors. Therefore, the size of each air purifier installed in this range hood is generally inevitable due to the capacity of about 400 cubic meters per hour, which is generally required for household range hoods. There was a problem.
And the biggest problem of this range hood is to combine a plurality of devices in order to completely clean the air sucked from the indoors and return it to the indoors. Manufacturing costs and power consumption also increase, and there is a problem that the structure becomes complicated when commercialized.

  The range hood disclosed in Patent Document 2 returns air having a small amount of smoke and smell flowing into the range hood as warm air, and the air having a lot of smoke and odor is exhausted from the exhaust passage to the outside. . For this reason, there is a problem that the hot air cannot be effectively used depending on the degree of smoke or odor flowing into the range hood.

  In the air cleaner of Patent Document 3, air passes or circulates in order through three means: a VOC adsorption means, a heating means for heating the adsorption means, and a decomposition means for decomposing the VOC desorbed from the adsorption means by heating. It is comprised by. Therefore, during desorption after adsorption, highly contaminated air containing a high concentration of VOC is generated. Although there is a means for decomposing and removing this highly polluted air, there is a case in which the amount of VOC that cannot be decomposed by the decomposing / removing means passes or cannot be caught up to an amount that can be decomposed. There was a problem of exhausting highly polluted air into the space. Moreover, since the air after removal of the high-temperature VOC is returned to the aspirated space even for a short time, the temperature of the aspirated space is increased, and there is a problem that the user is uncomfortable especially in summer. Furthermore, there are various sizes of such air purifiers depending on the size of the room to be installed, but when installed, the room becomes narrower by that amount, and furniture and interiors are installed. There was a problem that the degree of freedom was small.

  The present invention has been made in view of the above-mentioned problems, reduces the manufacturing cost with a simple structure, and effectively uses hot air generated during cooking regardless of the degree of smoke or odor to remove VOCs. The purpose is to reduce the required energy and to reduce the heat load (ventilation load) due to ventilation.

  In order to solve the above-mentioned problem, in the invention described in claim 1, an intake port into which air sucked from indoor flows in, and a flow path in which the air sucked from the intake port branches and flows indoors or outdoors A flow path switching means for switching the flow path so that the air taken in from the air intake port flows indoors or outdoors, and the upstream side of the flow path switching means with respect to the air flow in the flow path section A VOC adsorbing means arranged on the flow path, an air blowing means arranged on the upstream side of the flow path switching means with respect to the air flow in the flow path section, and a control device for controlling the operation of the flow path switching means. A range hood with a VOC removal function, characterized in that hot air generated when using a cooking device is used for heating regeneration of the VOC adsorption means.

  In a preferred aspect of the present invention, as described in claim 2, when the flow path switching means removes the VOC contained in the air (during the VOC removal operation), the air taken in from the air inlet is indoors. When returning to a state in which the flow path is switched to the exhaust port and the VOC adsorbed by the VOC adsorbing means can be desorbed and adsorbed (during VOC regeneration operation), the air sucked from the intake port is exhausted outdoors. Therefore, the range hood with a VOC removal function according to claim 1 is provided.

  In a preferred embodiment of the present invention, as described in claim 3, in order to collect as much hot air generated during cooking as possible, it is arranged above the cooking device. A range hood with the described VOC removal function is provided.

  In a preferred aspect of the present invention, as described in claim 4, the detection means for detecting use of the cooking device, and the VOC removal operation or the VOC regeneration operation is performed based on the detection means. A range hood with a VOC removal function according to any one of claims 1 to 3 is provided.

  In the invention according to claim 1, conventionally, the hot air generated during operation of the cooking device that has been exhausted to the outdoors with the operation of the air blowing means, regardless of the degree of smoke and odor flowing into the range hood, It can be effectively used for regeneration of the VOC adsorption means. Moreover, since there are few components and the structure is simple, manufacturing cost can be kept low.

  In the invention according to claim 2, during the VOC removal operation, the flow path is switched so that the air sucked from the indoors is returned to the indoor, and during the VOC regeneration operation, the air sucked from the indoors is discharged to the outdoors. Since the path is switched, it is possible to prevent the VOC that has been desorbed from the VOC adsorption means from being returned indoors.

  In the invention according to claim 3, it is possible to collect as much hot air as possible when using the cooking device and use it effectively for the regeneration of the VOC adsorption means, so that it is diffused indoors or exhausted outdoors. Energy that is wasted can be reduced.

  In the invention which concerns on Claim 4, in order to detect generation | occurrence | production of the hot air utilized for the heating reproduction | regeneration of a VOC adsorption | suction means, the detection means which detects the driving | operation of a heating cooking appliance is provided, and VOC is based on the detection information. By performing the removal operation and the VOC regeneration operation, the operation state of the range hood can be automatically switched without bothering the user of the cooking device.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1 to 5 are views showing the relationship between the configuration and the installation position of a range hood with a VOC removal function according to first to third embodiments of the present invention.

  As shown in FIGS. 1 to 3, the range hood 1 with a VOC removal function according to the present embodiment has an intake port 4 through which air sucked from indoors flows, and air sucked from the intake ports 4 is discharged indoors. The intake port 11, the flow path portion 6 through which the air sucked from the intake port 4 flows through the exhaust duct 11 connected to the exhaust port 11 or the outdoors, and the exhaust duct connected to the exhaust port 11 or the outdoors The flow path switching means 5 for switching the flow path so that the air flows, the VOC adsorbing means 2 disposed upstream of the flow path switching means 5 and the flow path section 6 with respect to the flow in the flow path section 6. , The air blowing means 3 disposed upstream of the flow path switching means 5 and a control device 12 for controlling the operation of the flow path switching means 5 are provided.

  The range hood 1 with a VOC removal function according to the present embodiment includes an operation panel 13 connected to a control device 12 as shown in FIG. As a preferred embodiment of the present invention, it is preferable that the user can operate the operation panel 13 by selecting whether to perform the VOC removal operation continuously or intermittently. In addition, even when the VOC removal operation is being performed, when it is desired to ventilate the indoor air as in the case of using the cooking device, the VOC removal operation is forcibly stopped and the VOC regeneration operation and / or It should be able to be operated to perform ventilation operation.

In the range hood 1 with a VOC removal function according to this embodiment, as shown in FIG. 2, during the VOC removal operation, the flow path switching means 5 takes in the indoor air 8 from the intake port 4 and passes the VOC adsorption means 2. After the VOC in the indoor air is removed, the flow path is switched so that the air is exhausted indoors (indoor exhaust 9) from the exhaust port 11.
Although not shown in the drawing, odorous components, oil, moisture, dust and the like are provided in the intake port 4 so that impurities such as oil and dust adhere to the VOC adsorption means 2 and the VOC adsorption amount does not decrease. It is better to place a filter that collects impurities. Similarly, if the filter is also disposed at the exhaust port 11, the indoor exhaust 9 collects more odors, so that it is not necessary to give an uncomfortable feeling to a person inside the room. Further, the number of filters is not limited to one, and a plurality of filters may be used to increase the above-described effect.

In the range hood 1 with a VOC removal function according to the present embodiment, as shown in FIG. 3, during the VOC regeneration operation, the flow path switching means 5 takes in the hot air 8 a when using the cooking device from the intake port 4 and absorbs the VOC. The VOC that is passed through the means 2 and adsorbed on the VOC adsorption means 2 is desorbed by using hot air 8a when using the cooking device, and then flows to the exhaust duct and is exhausted to the outside (outdoor exhaust 10). Switch.
Although not shown in the drawing, odorous components, oil, moisture, dust and the like are provided in the intake port 4 so that impurities such as oil and dust adhere to the VOC adsorption means 2 and the VOC adsorption amount does not decrease. It is better to place a filter that collects impurities. Similarly, if the filter is also arranged at the exhaust port 11, the indoor exhaust 9 collects more odor, so that it is not necessary to give unpleasant feeling to the person in the room during the VOC removal operation.
The number of filters is not limited to one, and a plurality of filters may be used to increase the above-described effect.

As shown in FIGS. 4 and 5, the range hood 1 with a VOC removal function according to this embodiment collects as much hot air as possible when using the cooking device and regenerates the VOC adsorption means 2. The installation position of the invention is preferably above the cooking device.
In this embodiment, the IH cooking heater 14 or the gas stove 14a is described as an example of the cooking device.
As the best mode, it is desirable to be directly above the IH cooking heater 14 or the gas stove 14a. Even if it is just above, if there is too much distance between the IH cooking heater 14 or the gas stove 14a and the intake port 4 of the range hood 1 with the VOC removal function, the hot air 8a generated from the cooking utensil 15 when using the cooking device 8a Therefore, when used in a general household, it is desirable that the distance between them be not more than 2 meters, where the collection efficiency of impurities such as oil and water vapor and hot air is extremely reduced.

As the base material used in the VOC adsorption means 2 and the adsorbent supported on the base material, it is desirable to use honeycomb ceramic paper for the base material and zeolite, silica gel, activated alumina or activated carbon as the adsorbent.
The base material and adsorbent of the VOC adsorption means 2 are not limited to those described above.

The range hood with a VOC removal function according to this embodiment includes a detection means 16 for detecting the operation of the cooking device in the kitchen 17 as shown in FIG.
As the best mode, the detection means 16 is provided in the IH cooking heater 14 or the gas stove 14a, and the information of the detection means is obtained by using a wireless information transmission means such as infrared rays and radio waves and the range hood 1 with a VOC removal function and the above-mentioned It is desirable to link the operation of the IH cooking heater 14 or the gas stove 14a.

Since the range hood 1 with a VOC removal function according to this embodiment is configured and operates as described above, the VOC contained in indoor air is adsorbed and removed to clean the air just by installing the present invention. Further, the adsorbed VOC is regenerated by exhaust heat that has been discarded so far, so that waste of heat energy can be eliminated and effectively used.
In addition, during VOC removal operation except during VOC regeneration operation, indoor air is circulated to perform VOC removal, so that indoor thermal energy is not released to the outside and it is economical. Since it is not performed, dust such as dust or VOC contained in outdoor air is not sucked indoors.
In addition, since it is not necessary to place an air purifier with a VOC removal function separately from the range hood with a VOC removal function, it is possible to increase indoor use space and increase the degree of freedom of furniture and interior installation. Become.
In addition, by operating the range hood with a VOC removal function based on the detection means for detecting the operation of the cooking device, the range hood is automatically cleaned without bothering the user of the cooking device. Operation can be switched.

  The range hood 1 with a VOC removal function according to the present embodiment is capable of desorbing and adsorbing the VOC adsorbed to the VOC adsorbing means 2 in the range hood described in the first embodiment as shown by broken lines in FIGS. A reproducing means 7 for reproducing the state is arranged.

The regenerating means 7 of the range hood with a VOC removal function according to this embodiment is preferably a heating device (heater) such as a nichrome wire heater or a PTC heater that further heats the hot air 8a when the cooking device is used.
In the case where a honeycomb-shaped electromagnetic wave absorbing material is used for the base material on which the adsorbent is supported, the regeneration means 7 may be an electromagnetic wave generating device instead of the heating device described above.

  Since the range hood 1 with a VOC removal function according to the present embodiment is configured and operates as described above, the VOC adsorption unit 2 can be stably detached regardless of the temperature of hot air generated during operation of the cooking device. I can do it.

  The range hood 1 with a VOC removal function according to the present embodiment has a VOC adsorption / desorption means 2a instead of the VOC adsorption means 2 in the range hood described in the first embodiment as shown in FIGS.

  The VOC adsorption / desorption means of the range hood 1 with a VOC removal function according to this embodiment incorporates, for example, an electric resistor that generates heat when energized to a substrate carrying a VOC adsorbent, and is adsorbed by the heat generation by the VOC adsorption / desorption means. And a regenerating means for desorbing the VOC.

  Since the range hood 1 with a VOC removal function according to this embodiment is configured and operates as described above, the number of parts is reduced, so that the range hood can be reduced in size, and the VOC adsorbed by the adsorbent is directly applied to the range hood. Since heat can be applied, power consumption required for the VOC regeneration operation can be reduced.

  The range hood with a VOC removal function according to the present invention is not limited to a kitchen in a house, but is applied to a place where hot air is generated and where local exhaust and indoor air ventilation and air purification are required. Can do.

It is a perspective view which shows the 1st, 2nd, or 3rd form example of implementation of this invention. It is sectional drawing at the time of the VOC removal operation which shows the 1st, 2nd, or 3rd example of implementation of this invention. It is sectional drawing at the time of VOC reproduction | regeneration operation | movement which shows the 1st, 2nd, or 3rd example of implementation of this invention. It is sectional drawing which shows the flow of the air which took on the heat at the time of heating cooking appliance use, the cooker hood with a VOC removal function, and the structure which concerns on the 1st, 2nd and 3rd example of implementation of this invention. It is a front view which shows the structure of the cooked air flow, the cooker hood with a VOC removal function, and the kitchen based on the 1st, 2nd and 3rd embodiment of implementation of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Range hood with a VOC removal function 2 ... VOC adsorption | suction means 2a ... VOC adsorption / desorption means 3 ... Air blower 4 ... Intake port 5 ... Flow path switching means 6 ... Flow path part 7 ... Regeneration means 8 ... Indoor air 8a ... Heat cooking Hot air when using equipment 9 ... Indoor exhaust 10 ... Outdoor exhaust 11 ... Exhaust port 12 ... Control device 13 ... Operation panel 14 ... IH cooking heater 14a ... Gas stove 15 ... Cooking utensil 16 ... Detection means 17 ... Kitchen

Claims (4)

An intake port through which air sucked from indoors flows,
A flow path section in which the air taken in from the intake port branches and flows indoors or outdoors;
A flow path switching means for switching the flow path so that the air sucked from the intake port flows either indoors or outdoors;
Regarding the air flow in the flow path section, a VOC adsorption means arranged upstream of the flow path switching means,
With respect to the air flow in the flow path section, the air blowing means arranged on the upstream side of the flow path switching means,
A control device for controlling the operation of the flow path switching means;
A range hood with a VOC removal function,
A range hood with a VOC removal function, wherein hot air generated when using a cooking device is used for heating regeneration of the VOC adsorption means. The flow path switching means is
When VOC contained in the air is removed (during VOC removal operation), the air taken in from the intake port is discharged indoors, and the VOC adsorbed by the VOC adsorbing means is desorbed and returned to a state where it can be adsorbed. 2. The range hood with a VOC removal function according to claim 1, wherein the air flow path is switched so that the air sucked from the intake port is discharged to the outside during the time (during VOC regeneration operation). The range hood with a VOC removal function according to claim 1 or 2, wherein the range hood with a VOC removal function is arranged above the cooking device. Detecting means for detecting use of the cooking device;
A VOC removal operation or a VOC regeneration operation is performed based on the detection means,
The range hood with a VOC removal function according to any one of claims 1 to 3.

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