JP4833521B2 - Range hood fan deodorizing material and range hood fan comprising the deodorizing material - Google Patents

Description

  The present invention relates to a deodorizing material that is most suitable for removing fats and oils and odorous components contained in combustion gas, and a range hood fan including the deodorizing material.

In recent years, electric cooking stoves and electromagnetic cookers that do not generate toxic gases such as combustion gas have been demanded instead of gas combustion appliances for cooking appliances provided in kitchens.
A range hood fan is installed above the heating appliance to suck in the generated smoke and odors and discharge them outdoors. However, if indoor air that has been air-conditioned is exhausted, air-conditioning energy loss occurs, saving energy. There was also a problem from the viewpoint.
Further, in recent years, with the progress of airtightness in houses, if a large amount of room air is discharged outdoors, a pressure difference is generated in the room, which makes it difficult to open and close the door.
So, by capturing oil smoke and odor generated from cooking utensils that do not generate combustion gas, grease filters (woven fabric such as glass wool and nonwoven fabric filters, synthetic resin filters made of polyester, lath net, slot filter, punching metal, etc. It is equipped with a continuous porous foam with an inorganic ion adsorption type deodorizing element attached to the downstream as a deodorizing material, and the air to be deodorized indoors. A circulating range hood fan has been proposed (see, for example, Patent Document 1).

By the way, the deodorizing material simply adsorbs and removes oils and fats and odor components in the continuous pores of the foam.
Therefore, the foam is clogged in a short period of time, so that the adsorption performance cannot be maintained, the deodorization performance cannot be continued for a long time, and cleaning must be repeated frequently.
JP 11-125444 A

  The present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide a deodorizing material for a range hood fan capable of maintaining the deodorizing performance over a long period of time and a range hood fan including the deodorizing material. It is in.

The inventors of the present invention have conducted extensive research on removing fats and oils and odorous components with a range hood fan, hydrolyzing the fats and oils and odorous components adsorbed on the surface of the hydrous magnesium silicate by their own catalytic action. As a result, the present inventors have found that deodorization is performed and have arrived at the present invention.
That is, the present invention comprises 20 to 90 parts by weight of attapulgite, 20 to 90 parts by weight of sepiolite, 20 to 90 parts by weight of silica as an aggregate, and 40 parts by weight or less of methylcellulose as a binder. A deodorizing material for a range hood fan, comprising a honeycomb structure having 200 to 300 air holes per 6.45 cm (1 inch ² ), the main component being hydrous magnesium silicate clay mineral produced by firing. (Claim 1). And this deodorizing material for range hood fans is arrange | positioned in the air flow path of the range hood fan which inhales and exhausts the ascending airflow which generate | occur | produces from the cooking appliance which does not generate | occur | produce combustion gas (Claim 2). By arranging in this way, the water-containing magnesium silicate clay mineral adsorbs the moisture, fats and oils and odor components contained in the rising air current in contact with the rising air current, and the hydrous magnesium silicate clay mineral itself catalyzes its fat and oil. The odor component can be oxidized and hydrolyzed. In other words, the ascending airflow generated by cooking contains a lot of moisture, fats and oils, odor components, etc., but when it comes into contact with a deodorizing material mainly composed of hydrous magnesium silicate clay mineral, The water, fats and oils, and odorous components are adsorbed in the formed micropores, and the adsorbed fats and oils and odorous components are hydrolyzed with the hydrous magnesium silicate to deodorize them.
The deodorizing material mainly composed of this hydrous magnesium silicate clay mineral is a deodorizing tool constructed by stacking the small pieces so that the updraft can be ventilated. It can be proposed as an example of the use of such arrangement.
In addition, if the honeycomb porous hole has a continuous porous structure, it is possible to ensure a large deodorizing surface area without increasing the aeration pressure loss, so that the adsorption performance of the oil and fat is improved and the contact area of the oil and fat is increased. Hydrolysis can be promoted.
However, in the case of the continuous porous structure of the honeycomb vent holes, if they are arranged close to each other in a multi-stage shape, the flow rate becomes regular and the contact rate with the deodorizing material surface decreases. Therefore, it is preferable to arrange in a multistage manner with a required interval.

And by arranging the grease filter on the upstream side of the deodorizing material for the range hood fan,
Higher deodorizing performance can be exhibited (Claim 3 ).
This grease filter has a woven fabric such as glass wool, a nonwoven fabric filter, a synthetic resin filter made of polyester, a lath net, a slot, etc., which is disposed on the most upstream side where the ascending air current strikes upon receiving the suction action of the exhaust device Examples of such a filter include a metal filter such as a filter and punching metal.
The amount of generated updraft varies depending on the amount of oil used by the user. Therefore, when Chinese dishes and fried foods that use a lot of oil are frequently used, it is expected that the amount of oil and fat adsorbed will exceed the hydrolysis performance of the deodorizing material mainly composed of hydrous magnesium silicate clay mineral. In addition, if dust from indoors or clothing adheres, the cleaning and replacement cycle may be shortened.
In consideration of this, the grease filter is arranged upstream of the deodorizing material so as to capture oil and fat and dust, and its deodorizing composition mainly composed of hydrous magnesium silicate clay mineral. It is also effective to use the material for a longer period of time.
In the case where it is arranged downstream of the grease filter, when the continuous pores are in the honeycomb vent holes, those having 200 to 300 pores per 6.45 cm ² ( 1 inch ² ) are appropriate. Those having finer honeycomb ventilation holes have a higher ventilation resistance and a higher possibility of clogging with oils and fats. Therefore, a fan with high output must be used as the capacity of the blower used.

Further, in order to improve the deodorizing performance, when an activated carbon filter is disposed downstream of the deodorizing material for the range hood fan mainly composed of the hydrous magnesium silicate clay mineral, the deodorizing material and the grease mainly composed of the hydrous magnesium silicate clay mineral. It is effective in adsorbing odorous components that cannot be completely adsorbed by a filter to make deodorization more complete (Claim 4 ).
And, by making the activated carbon filter into a continuous porous structure, the adsorption efficiency is improved by increasing the contact area in the same manner as the continuous deodorizing material for the range hood fan mainly composed of hydrous magnesium silicate clay mineral, The filter replacement frequency can be reduced (claim 5 ).
As for the arrangement of the deodorizing material for the range hood fan and the activated carbon filter having a honeycomb structure mainly composed of hydrous magnesium silicate clay mineral, when the activated carbon filter has a honeycomb structure, if the activated carbon filter is in proximity, a turbulent flow state is brought about. Therefore, it is difficult to obtain high adsorption efficiency. For this reason, it is desirable to arrange a required interval between each stage to generate air turbulence between them.

Further, instead of the above-mentioned grease filter, a continuous porous structure deodorizing material mainly composed of hydrous magnesium silicate clay mineral or a deodorizing material strip mainly composed of hydrous magnesium silicate clay mineral can be made to vent the updraft. Thus, deodorizing tools configured to be stacked may be used (claims 6 and 7 ).
In this case, it is appropriate that the deodorizing material having a continuous porous structure has continuous pores in random directions having about 20 to 80 holes per 6.45 cm ² ( 1 inch ² ) .
In addition, in the case of deodorizing tools in which strips of deodorizing material mainly composed of hydrous magnesium silicate clay mineral are stacked so that updraft can be ventilated, the continuous pores in random direction are naturally created by the weight of the strips. It is formed.

Furthermore, the range hood fan deodorizing material, the activated carbon filter are those preferably to be replaceably housed in a single or multiple support frame while being divided into a plurality (claim 8).
Although the said deodorizing material for range hood fans and the said activated carbon filter are good also as a single big filter, when storing a reserve, it is bulky. Therefore, what was divided | segmented into plurality is used. The continuous porous filter size is suitably about 100 to ²⁰⁰ cm ² .
Since the deodorizing material for the range hood fan has a honeycomb structure and the activated carbon filter has a continuous porous structure, the weight is relatively heavy. Therefore, it is preferable that the replacement work is simplified by being housed in a plurality of support frames.

And it will become suitable if a dust removal filter is arrange | positioned in the most downstream of an air flow path (Claim 9 ).
The deodorizing material mainly composed of hydrous magnesium silicate clay mineral and the activated carbon filter generate a small amount of dust. When an updraft is passed through the deodorizing material or activated carbon filter, the dust rises and is mixed with the purified air from the indoor exhaust port and discharged. In order to prevent this dust from flowing out into the room or the like, a dust removing filter is provided to allow a cleaner intake air to be exhausted into the room.

In addition, it is preferable that a photocatalyst powder is mixed in a deodorizing material for a range hood fan and the deodorizing material is irradiated with ultraviolet rays from a light source (claim 10 ).
The photocatalyst powder has a property of decomposing oil and fat adhering thereto by irradiation with ultraviolet rays.
Therefore, the photocatalyst powder accelerates the decomposition of fats and oils and can also decompose indoor formaldehydes.
For example, when a honeycomb-like deodorizing material is used, it is desirable to mix the photocatalyst powder in a material kneading step such as clay mineral. Then, ultraviolet rays are irradiated by a light source. As for the irradiation, it is better to avoid irradiation from one direction and to irradiate light to every corner of the vent hole using a reflecting plate or the like.

Then, a circulation path for air flow path performs circulation exhaust into the room, and an exhaust passage for exhausting outdoors, it is preferable to have a switchable flow path of each (claim 11) .
When cooking using a strong odorous material such as garlic in Chinese or Italian cuisine, there is a possibility that sufficient deodorization cannot be performed. In order to solve such problems, the air flow path can be switched between an indoor circulation path and an outdoor exhaust path so that it can be exhausted outdoors without deodorizing when cooking with a strong smell. ing.
The flow channel can be switched arbitrarily by the user, and an odor detection means is provided so that the flow channel is automatically switched when an odor of a predetermined level or higher is detected.

Further, it is preferable to include a fire detection means provided in the air flow path, and a flow path closing damper provided in the air flow path for closing the air flow path by detection of the fire detection means. (Claim 12 ). The fire detection means is means for detecting a fusing reaction such as a temperature sensor or a thermal fuse.

Then, by opening the front portion of the hood main body, it is convenient to allow exchanging at least the range hood fan deodorant (claim 13).

Since the present invention is configured as described above, it has the following advantages.
(Claim 1) The present invention has been found that the hydrous magnesium silicate clay mineral adsorbs moisture, fats and oils, and odorous components in contact with it, and hydrolyzes the oily and fats and odorous components by its own catalytic action. It is based on. As is apparent from the experiments in the examples, linoleic acid, which is one of the main components of salad oil, can be decomposed to 20% or less by weight of the hydrophobic zeolite in 7 days, whereas the hydrous magnesium silicate clay mineral of the present invention. As it is proved that about 95% or more of the deodorizing material with the main component is decomposed, the deodorizing material hydrolyzes the fat and odor components adsorbed by contact by its own catalytic action, so cleaning and replacement Thus, it is possible to provide a novel deodorizing material for a range hood that can be used for a long period of time without performing the above process. In addition, when the deodorizing material for the range hood fan has a honeycomb structure, a very large adsorption hydrolysis area of the filter can be secured without increasing the aeration pressure loss, and the decomposition performance of odors and fats and oils can be enhanced.
(Claim 3 ) Further, when a grease filter is disposed upstream of the deodorizing material for the range hood fan, the grease filter generates a large amount of oil and fat when dust, Chinese food or fried food adhered to a room or clothing. Since it is suitable for catching the minutes, it is easier to maintain and manage by removing and replacing the deodorizing material for the range hood fan and cleaning.
(Claims 4 and 5 ) Moreover, since the downstream activated carbon filter improves the deodorizing performance, the deodorizing rate of the hydrophobic zeolite known as a high-performance deodorizing material is high, as is apparent from the experiments in the examples. On the other hand, even if the deodorizing performance of the deodorizing material for the range hood fan is somewhat inferior, it is possible to obtain a higher deodorizing performance than that of the hydrophobic zeolite by disposing an activated carbon filter downstream. .
( 8 ) Since the deodorizing material for the range hood fan is a honeycomb structure and the activated carbon is a continuous porous structure, even if it is relatively heavy, the cleaning operation and the replacement operation are simple.
(Claim 9 ) In addition, the dust generated by the deodorizing material for the range hood fan and the activated carbon is removed by the dust removing filter and is not discharged into the room, so that the room is not polluted.
(Claim 10 ) When the photocatalyst powder is mixed in the deodorizing material for the range hood fan and the deodorizing material is irradiated with ultraviolet rays from a light source, the oil and fat content is promoted by the action of promoting the decomposition of the oil and fat in the photocatalyst powder. Removal efficiency can be improved.
(Claim 11 ) Further, when it is determined that cooking is performed with a strong odor and is not deodorized, the deodorizing material for the range hood fan is exhausted outside without passing through the activated carbon filter, and the range hood fan The deodorizing material can be protected from the situation.
(Claim 12 ) The oil and fat adsorbed on the deodorizing material for the range hood fan is prevented from being ignited to prevent a fire.
(Claim 13 ) Periodic cleaning and replacement of the deodorizing material for the range hood fan can be easily performed.

  Next, embodiments of the deodorizing material for the range hood fan of the present invention and the range hood fan having the deodorizing material will be described.

FIG.1 and FIG.2 has shown the deodorizing material of 1st Embodiment, and the range hood fan which has the deodorizing material.
In the range hood fan A, a grease filter 21 is disposed on the upstream side of the deodorizing material 11 mainly composed of hydrous magnesium silicate clay mineral, an activated carbon filter 31 is disposed on the downstream side, and a dust removing filter 41 is disposed on the downstream side of the activated carbon filter 31. The type which installed the deodorizing unit 1 connected to the exhaust apparatus B inside on the top plate 2 of the food | hood main body a is shown.

  As shown in FIG. 1, the range hood fan A has an oblique metal grease filter 21 on an upper portion of a hood body a having a triangular shape in a side view with an open slope, and an upper support 3 and a lower curl shape. A vortex generator 5 is disposed in front of the dew condensation water guide plate 4 so as to hide most of the metal grease filter 21 from the dew condensation water guide plate 4. 4. The condensed water receiver 6 provided at the lower end of the vortex generator 5 receives the condensed water adhering to the grease filter 21, the guide plate 4, and the vortex generator 5. The lower part is covered with the curved cover 6, the exhaust device B is accommodated in a space partitioned behind by the support 3, the metal grease filter 21, and the dew condensation water guide plate 4, and the deodorizing unit 1 is erected forward. Removable curtain 7 made of punched metal It has a configuration to hide.

  The eddy current generator 5 is a face plate referred to as a rectifying plate (which will be described below with reference numerals), and is disposed on the upper portion of the curved cover 6 in the hood body a as shown.

  Further, as shown in FIG. 1, the eddy current generator 5 is disposed in a housing shape within the hood body a, and includes a portion where the ascending airflow C containing moisture, oil and fat, and odor components just collides. A downward guide surface 15 formed over the entire width, and a curled surface 25 formed in a circular arc shape over the entire width continuously forward of the guide surface 15 below the guide surface 15. It has become.

  And it supports so that the clearance gap S for suction may be formed between the upper edge of the vortex | eddy_current generator 5, and the said support plate 3, and between the left-right edge and the right-and-left side board of the food | hood main body a, and with cooking The generated upward airflow C collides with the guide surface 15 and is guided downward, and when the guide is further guided by the curled surface 25 that is curved in a circular arc toward the front, a negative pressure is generated. It produces an action, thereby generating a vortex Q, which is sucked by the exhausting ability of the exhaust device B, deodorized by the deodorizing unit 1 and circulated in the room, and the trapping space for the rising airflow C in the hood body a An air flow path E is formed from c to an exhaust port 51 at the tip of the deodorizing unit 1, and a temperature sensor, for example, is disposed as the fire detection means D in the air flow path E.

  The deodorizing unit 1 is provided with a flow path closing damper 8 at the lower end of a unit case 1 ′ having an exhaust port 51 at the front end facing the curtain plate 7, and containing hydrous magnesium silicate clay mineral as a main component from the downstream side. The deodorizing material 11 having the continuous porous structure, the activated carbon filter 31 having the continuous porous structure, and the dust removing filter 41 are sequentially arranged.

The deodorizing material 11 mainly composed of hydrous magnesium silicate clay mineral is a continuous porous structure. In this embodiment, attapulgite 20 to 90 parts by weight, sepiolite 20 to 90 parts by weight, and silica 20 to 90 parts by weight as an aggregate. Part, and several parts by weight of methylcellulose as a binder are wet-kneaded, extruded, dried, and then fired at 500 ° C. or less and used in a honeycomb structure. As shown in FIG. 11a is exchangeably fitted. Reference numeral 11b is the lid.
The support frame 11a is supported by a rail L provided on the unit case 1 ′.

Further, the deodorizing material mainly composed of the hydrous magnesium silicate clay mineral is mixed with photocatalyst powder such as titanium oxide, manganese oxide, tungsten oxide, zinc oxide, copper oxide in the kneading step, and the deodorizing unit is mixed. It is free to irradiate ultraviolet rays from the light source such as the black light and the reflector to every corner of each vent hole, and to promote the decomposition of fats and oils by the decomposition action by the photocatalyst powder. Is.

In the present embodiment, the activated carbon filter 31 has a continuous porous structure (honeycomb structure) and is interchangeably fitted to a lattice-like support frame 31 a in the same manner as the deodorizing material 11.
The dust removal filter 41 can be exemplified by a heat-resistant polyamide filter or a high collection type. Examples of the high collection type include a HAPA filter and a ULPA filter.
The dust filter 41 is also provided in the unit case 1 ′ so as to be removable.

  The deodorizing unit 1 has a support frame 11a for the deodorizing material 11 and a front face facing the support frame 31a for the activated carbon filter 31 as an opening / closing part 1 ", which can be inserted and removed, and is mainly composed of hydrous magnesium silicate clay mineral. The deodorizing material 11 and the activated carbon filter 31 can be easily cleaned and replaced.

The air flow path E can be switched to the circulation path e1 and the exhaust path e2 to the room.
The exhaust passage e2 is formed by communicating with a communication passage e2 ′ that opens to the outside immediately downstream of the flow path opening / closing damper 8, and an exhaust damper 9 is provided at the inlet thereof, at a required location of the hood body a. When the installed odor sensor F detects an odor with a concentration higher than a predetermined level, the flow path opening / closing damper 8 closes the circulation path e1 and the exhaust damper 9 opens the connection path e2 ′ and directly raises the air. C is exhausted outdoors.

  Table 1 shows the composition of salad oil most frequently used in cooking.

  Table 2 shows an experiment in which a deodorizing material (honeycomb structure) composed mainly of hydrous magnesium silicate clay mineral decomposes the main components (paltimic acid, stearic acid, oleic acid, linoleic acid, linolenic acid) contained in salad oil. Table 3 shows experimental data in which hydrophobic zeolite used as a deodorizing adsorbent decomposes the main components (paltimic acid, stearic acid, oleic acid, linoleic acid, linolenic acid) contained in the salad oil. Each is shown.

  Salad oil is mainly composed of glycerin and fatty acid, and the decomposition rate of palmitic acid, stearic acid, oleic acid, linoleic acid, and linolenic acid, which are the main components of the fatty acid, was measured. Oleic acid and linoleic acid account for about 70% of the total fatty acids contained in salad oil.

According to this, deodorizing material (200-300 per inch ^2), which is mainly composed of hydrous magnesium silicate clay mineral, whereas hydrophobic zeolite only has a linoleic acid decomposition rate of 20% or less in 7 days. The honeycomb structure having the air vents) was decomposed by about 95% or more by weight.
Hydrolysis is proved by generating a decomposition product on the surface of the deodorizing material 11, and the high decomposition rate is that the hydrous magnesium silicate has a function of expanding the surface area due to its continuous pore structure, and is capable of adsorbing fats and oils and odor components. It is presumed to increase and promote hydrolysis.

As for odors, the deodorizing performance was measured by the “three-point comparative odor bag method” based on the malodor control method. This method consists of two odor bags filled with odorless air and odor generated when cooking the ingredients equivalent to five servings of pork vegetables using salad oil, and the main ingredients are hydrophobic zeolite and hydrous magnesium silicate. The 6 odorants (female) sniff a total of 3 bags of dilute odor bags that were obtained by aeration and deodorizing with deodorizing material and diluted so that the captured odor would be a predetermined concentration. The presence or absence of was determined.
Regarding the presence or absence of odor due to olfaction, the odor that passed through the hydrophobic zeolite was slightly weaker than that of the deodorizing material mainly composed of hydrous magnesium silicate clay mineral.
Further, deodorization efficiency was also calculated. This is calculated from the difference in odor concentration before and after aeration of the deodorizing material mainly composed of hydrous magnesium silicate clay mineral and the hydrophobic zeolite.

Table 4 shows deodorizing performance (deodorizing efficiency), and hydrophobic zeolite known as a high-performance deodorizing material has a deodorization rate of 96%, whereas continuous pores mainly composed of hydrous magnesium silicate clay mineral. The deodorizing rate of the deodorizing material ( 200 to 300 honeycomb vents per 6.45 cm ² ( 1 inch ² )) was somewhat low at 75%, but the activated carbon filter of the downstream continuous pores (honeycomb structure) With regard to deodorization performance, a performance exceeding the deodorization efficiency of hydrophobic zeolite with a deodorization efficiency of 98% was obtained.

  In addition, although each said experiment was performed about the hydrous magnesium silicate clay mineral which mixed attapulgite and sepiolite, it is not limited to this, If it is a hydrous magnesium silicate clay mineral, the fats and oils approximated to the said implementation result It had fractionation performance and odor deodorization performance.

The range hood fan A using the deodorizing material (honeycomb structure) 11 and the activated carbon filter (honeycomb structure) 31 mainly composed of the hydrous magnesium silicate clay mineral, which is proved by the above results, has the moisture generated by cooking. Then, the rising air C containing the oil and fat components and the odorous component is sucked in by the intake performance of the exhaust device B, and the fat and oil components are adsorbed and removed by the known metal grease filter 21 and sent to the deodorizing unit 1.
This kind of metal grease filter 21 captures about 60% of the oil and fat contained in the rising air flow C as is well known in the art, and the oil and fat and odor components that cannot be captured are contained in the hydrous magnesium silicate clay mineral. It adsorbs with the deodorizing material 11 which expanded the surface area of the said honeycomb structure as a main component. The adsorbed moisture, fat and oil, and odorous components are hydrolyzed by the catalytic action of the hydrous magnesium silicate clay mineral to remove about 30% of fat and oil.
The remaining 10% of the oil and fat is adsorbed and removed by the activated carbon filter 31 having a honeycomb structure, and the dust removing filter 41 removes dust generated from the deodorizing material 11 and the activated carbon filter 31 and circulates it in the room as clean air. .
If the temperature sensor D is detected in the event of a tempura fire or the like, the air flow path E is closed by the flow path opening / closing damper 8 to prevent the fire from spreading, and if a strong odor rising airflow C is generated, the circulation path The air is exhausted directly from the exhaust path e2 to the outside without being circulated from e1 to the room.

  In the range hood fan A of this embodiment, as shown in FIG. 3, a metal grease filter 21 that adsorbs and removes oils and fats is disposed in a flat hood main body a having an open lower surface, and the grease filter 21 faces. A deodorizing unit 1 having an exhaust device B at the top is erected on the top plate 2 of the hood main body a, and the deodorizing unit 1 is covered with the removable curtain plate 7 made of punching metal so that it cannot be seen from the room. Is.

The deodorizing unit 1 includes a deodorizing material 11 having a continuous pore structure (honeycomb structure) mainly composed of hydrous magnesium silicate clay mineral in an air flow path E provided with an exhaust damper 9 of the unit case 1, and a continuous pore structure (honeycomb). An activated carbon filter 31 and a dust removal filter 41 having a structure) are arranged in order from the upstream side, and an exhaust device B is communicated with the upper end, and the exhaust device B exhausts toward the curtain plate 7.
Since other configurations are the same as those of the first embodiment described above, the same reference numerals are given and description thereof is omitted.

In the range hood fan A of this embodiment, as shown in FIG. 4, the curtain plate 7 is not made of punching metal as described above but is a flat plate, and the discharge port 17 of the fan casing in the exhaust device B is connected from the curtain plate 7 to the room. The dust removing filter 41 is disposed at the discharge port 17 so that the dust removing filter 41 is blown into the clean air.
Since other configurations are the same as those of the second embodiment described above, the same reference numerals are given and detailed descriptions thereof are omitted.

In this embodiment, as shown in FIG. 5, ascending airflow can be passed through the inlet of the deodorizing unit 1 as an alternative to the grease filter 21 and the strip 11 ′ of the deodorizing material 11 mainly composed of hydrous magnesium silicate clay mineral. The deodorizing tool 11 "stacked so as to be used is used so that it can be removed.
As shown in FIGS. 6 and 7, the deodorizing tool 11 ″ is spread on a receiving frame 11 ″ -1 having a slightly rough bottom surface. Reference numeral 11 "-2 denotes the lid.
Since other configurations are the same as those of the second and third embodiments described above, the same reference numerals are given and detailed descriptions thereof are omitted.

  Although this embodiment is not shown in the drawings, the deodorizing material 11 ″ may be replaced with the deodorizing material 11 of the first to fourth embodiments described above.

  As shown in the above embodiments, the hydrous magnesium silicate clay mineral adsorbs fats and oils and odor components together with moisture by its contact, and hydrolyzes the fats and oils and odor components without clogging by their own catalytic action. Since this is what we know, we can reduce the frequency of regular cleaning and replacement. Therefore, the grease filter 21 is disposed in the middle of the grease filter 21 for removing oil and fat and the activated carbon filter 31 disposed on the most upstream side where the rising airflow strikes first after receiving the suction action of the exhaust device. Can be used as a deodorizing means for deodorizing the fats and oils and odor components that cannot be adsorbed, or arranged in multiple stages in the air flow path E of the updraft C and used as an alternative to the deodorizing means including the grease filter 21. It can be used in various forms such as being used as an alternative to the deodorizing means provided downstream of the grease filter 21 and has excellent deodorizing performance including the deodorizing material 11 (deodorizing tool 11 ″). A range hood fan can be provided.

1 is a partially cutaway side view of a range hood fan including a deodorizing material according to a first embodiment. The perspective view which shows the relationship between a deodorizing material and a support frame. It shows a partially cutaway side view of a range hood fan comprising the deodorizing material of the second embodiment. It is partially cut away and shown in a side view of a range hood fan comprising a deodorizing material of a third embodiment. It is partially cut away in the side view of the range hood fan comprising the deodorizing material of the fourth embodiment. The perspective view of the deodorizing tool used in FIG. FIG. 7 is an enlarged sectional view taken along line (7)-(7) in FIG. 6.

Explanation of symbols

A: Range hood fan a: Hood main body 11: Deodorizing material E: Air flow path 21: Grease filter 11 ": Deodorizing tool 31: Activated carbon filter 41: Dust filter e1: Circulation path e2: Exhaust path D: Fire detection means (temperature) Sensor) 8: Channel closing damper C: Upward airflow 11a, 31a: Support frame F: Odor sensor 11 ': Strip of deodorizing material

Claims (13)

It was prepared by wet kneading 20 to 90 parts by weight of attapulgite, 20 to 90 parts by weight of sepiolite, 20 to 90 parts by weight of silica as an aggregate, and 40 parts by weight or less of methylcellulose as a binder, followed by extrusion molding and firing at 500 ° C. or less. A deodorizing material for a range hood fan, comprising a honeycomb structure having 200 to 300 air holes per 6.45 cm ² mainly composed of hydrous magnesium silicate clay mineral.   2. The range hood fan according to claim 1, wherein the deodorizer for the range hood fan is disposed in an air flow path of the range hood fan that sucks and exhausts the rising airflow generated from the cooking utensil that does not generate combustion gas. .   The range hood fan according to claim 2, wherein a grease filter is disposed upstream of the deodorizing material for the range hood fan.   The range hood fan according to claim 3, wherein an activated carbon filter is disposed downstream of the deodorizing material for the range hood fan.   The range hood fan according to claim 4, wherein the activated carbon filter has a continuous porous structure. Instead of the grease filter, according to claim 3, characterized in that the use of deodorizing material having continuous pores of the hydrous magnesium silicate clay mineral to 6.4 5c m ² per 20 to 80 about a random direction mainly The range hood fan of any one of -5.   6. A deodorizing material comprising thin strips composed mainly of hydrous magnesium silicate clay mineral and stacked so as to allow updraft airflow is used instead of the grease filter. The range hood fan of any one of Claims.   The deodorizing material for a range hood fan and the activated carbon filter are divided into a plurality of parts and are accommodated in a single or a plurality of support frames in an exchangeable manner. Range hood fan.   The range hood fan according to any one of claims 2 to 8, wherein a dust removing filter is disposed on the most downstream side of the air flow path.   The range hood fan according to any one of claims 2 to 9, wherein the deodorizer for the range hood fan mixed with photocatalyst powder is irradiated with ultraviolet rays from a light source.   The air flow path includes a circulation path for circulating and exhausting indoors and an exhaust path for exhausting to the outside, and is switchable to each flow path. The range hood fan of any one of Claims.   A fire detection means provided in an air flow path, and a flow path closing damper provided in the air flow path for closing the air flow path by detection of the fire detection means. The range hood fan of any one of 2-11.   The range hood fan according to any one of claims 2 to 12, wherein the deodorizing material for the range hood fan is detachably provided in the air flow path.

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