JP2587910B2 - Oil purifier filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil purifier filter for purifying dirty oil after fry cooking.

[0002]

2. Description of the Related Art As a filter F for an oil purifier, as shown in FIG. 20, a case 10 having a cylindrical shape with a bottom and an opening formed on the bottom surface, and a perforated lid disposed on the upper surface opening of the case 10. The filter material 3 and 3 'are respectively disposed on the upper and lower sides of the container 1 formed by the filter 11 and the activated carbon 2 is disposed between the filter materials 3 and 3'.

[0003]

However, the filter F could not be treated as a combustible after use since the case 10 and the lid 11 were made of metal. The present invention has been made in view of such a point,
An object of the present invention is to provide an oil purifier filter that can be treated as a combustible while maintaining required performance.

[0004]

According to the present invention, there is provided a filter comprising an activated carbon layer and a filter material surrounding the activated carbon layer, the filter being positioned above, below, and beside the activated carbon layer and surrounding the activated carbon layer. The material is formed of a fibrous material containing natural plant fibers, and at least the filter material located above the activated carbon layer is formed as a mixture of natural plant fibers and synthetic fibers. have.

[0005]

According to the present invention, since it is formed of activated carbon and a filter material comprising a mixture of natural vegetable fibers and synthetic fibers, it can be treated as a combustible material. Since the fibers are used, good filtration performance can be obtained, and they are resistant to the heat of the hot oil poured.The filter material above the activated carbon layer is made of natural vegetable fibers and synthetic fibers. And a mixture with the natural vegetable fiber alone, so that the grain can be coarser and the oil can be easily permeated.

At this time, if the weight ratio between the natural plant fiber and the synthetic fiber of the filter material located above the activated carbon layer is set to 7: 3, favorable results can be obtained in various points, and the lower part of the activated carbon layer can be obtained. Is formed as a cylindrical case with a bottom and integrated with the filter material located on the side of the activated carbon layer, and the filter material located above the activated carbon is formed as a lid that closes the opening of the case. If so, the activated carbon layer only needs to be filled in the case and covered, so that the production is easy and the oil can surely pass through the filter material. When the filter material is integrally provided with a flange protruding in the outer peripheral direction, it is possible to prevent the occurrence of a short path in which oil does not pass through the filter.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiments. FIGS. 1 to 4 show one embodiment, in which a filter F is a case 10 having a bottomed cylindrical shape.
Activated carbon 2 is formed in a container 1 comprising a case 11 and a lid 11 for closing an upper opening of the case 10. As shown in FIGS. 2 and 3, the lid 11 is formed as a stack of the filter material 3 and the filter material 4 having finer eyes.
Is formed by a filter material 5 whose eyes are finer than the filter material 4.

[0008] The two filter materials 3 forming the lid 11,
4, the filter material 3 located in the upper layer is the coarsest in terms of clogging durability and has a large volume.
In order to increase the (porosity), it is formed of a 5 to 9 mm thick nonwoven fabric made of polyester fiber. The filter material 4 located in the lower layer has the function of capturing fine impurity particles, the mechanical strength (strength of the waist) required for the lid 11, and the heat resistance of the lid 11 when hot oil is supplied. From the viewpoint of temperature, it is formed by blending polyester fibers and natural cotton fibers at a weight ratio of about 3: 7 into a disc having a thickness of 2 to 3 mm with pulp mold.

As the fiber to be blended with the natural cotton fiber in the filter material 4, a chemical fiber such as nylon may be used in place of the polyester fiber. The materials and the compounding ratio of the materials are determined so that characteristics such as heat resistance temperature and clogging durability are suitable for the performance required for the product. However, if the thickness is increased in order to increase the clogging durability, the oil permeation rate will decrease. Since there is a case 10 made of a finer filter material 5 on top of the layer of activated carbon 2, as shown in FIGS. 2 and 3, 10 to 20 holes 40 having a diameter of about 1 to 3 mm are provided. The oil transmission rate may be increased by causing the activated carbon 2 and the case 10 to bear the capture of the minute impurity particles.

Next, a cylindrical filter material 5 having a bottom and forming a case 10 is formed by a natural cotton fiber pulp mold to a thickness of 2 to 3 mm.
As shown in FIG. 4, a flange 50 is provided on the upper opening edge, and the center of the bottom surface is slightly (2 to 3 mm) swelled upward. As described above, the eyes are made finer than the two types of filter materials 3 and 4 forming the lid 11. The reason that the filter material 5 is formed only of the natural cotton fiber is that, even if the pulp-moulded fine fiber dust is slightly peeled off from the outer surface, unlike the case of the filter materials 3 and 4, it is mixed into the oil being filtered. It is natural pulp from the viewpoint of food hygiene and safety. In addition, pulp molded with natural cotton fiber has high mechanical strength and heat resistance, is easy to be fine, and has a feature that the characteristics required for the case 10 are easily obtained. Because there is.

The fact that the filter material 5 forming the case 10 has a very fine mesh means that the residual impurity particles and the fine particles of the activated carbon 2 that have passed without being captured by the filter materials 3 and 4 as the lid 11. In addition to reliably capturing the powder, there is little leakage of oil from the side surface, so that the filter material 5 forms the case 10, but there is no deterioration in purification performance due to leakage from the side surface. Also has. However, the oil permeation speed is slower on one side, and the time required to purify the oil is longer. Therefore, by increasing the thickness, the strength and clogging durability are improved, and leakage from the side is prevented. In view of the fact that the speed is not slowed down, here, after the pulp molding, the filter structure on the bottom part is partially made porous by vacuum freeze-drying, thereby increasing the oil permeation rate. . Such a modification may be performed using a foaming agent or the like.

The case 10 and the lid 1 formed as described above.
1 is bonded to the flange 50 of the case 10 with the adhesive 7. And as the adhesive 7,
Adhesive strength does not deteriorate even when exposed to high-temperature oil, and it is necessary to meet the standards specified by the Food Additives or Food Containers Control Law. It is bonded by hot pressing. After the bonding is completed, several turns of sewing are performed with the cotton thread 8 over the entire circumference of the bonded portion.

The case 10 made of the filter material 5 is provided with a bulge 51 at the center of the bottom surface as described above. This is due to the fineness of the activated carbon 2 contained in the container 1 consisting of the case 10 and the lid 11. While suppressing the generation of powder,
This is to prevent a gap from being formed between the inner peripheral surface of the case 10 and the activated carbon 2. That is, the activated carbon 2
After filling, the activated carbon 2 is sealed by attaching the lid 11 as described above. At this time, the activated carbon 2 is pressurized between the bottom surface of the case 10 and the lid 11 to thereby activate the activated carbon 2.
Movement of the activated carbon 2 to prevent collision or rubbing of the activated carbon 2 with each other.
A gap is not formed between the inner peripheral surface and the activated carbon 2.

FIG. 5 shows an oil purifier using the filter F formed as described above. Handle 16 and spout 1
7 and an inner cylinder 18 provided at an upper portion in the container 15, the oil purifier is provided with a filter F at the bottom of the inner cylinder 18 by using the flange 50. . The pre-filter 9 disposed above the filter F is made of filter paper or the like, and is for removing large foreign substances such as frying, and a new one is used for each use. On the other hand, the filter F in the form of a cartridge can be used for oil purification more than ten times in normal use, and the user determines the degree of oil purification and replaces it with a new one as necessary. The used filter F can be discarded as flammable household waste because the container 1 itself is made of fiber-based filter materials 3, 4, and 5 and the inside is made of activated carbon 2.

The oil purified by passing through the pre-filter 9 and the filter F is stored in an oil storage section at the lower part of the container 15 and discharged through the spout 17 to be reused. At this time, the flange 50 of the container 1 prevents a short path in which the oil does not pass through the filter F but passes through the gap between the container 15 and the container 1. In the above embodiment,
Although the case 10 of the filter F was formed of the filter material 5, as shown in FIG. 6, the same filter materials 3 and 4 constituting the lid 11 were overlapped inside the filter material 5 and durable. May be enhanced.

As shown in FIG. 7, the case 10 is made of filter materials 3 and 4 which are the same material as the lid 11, or as shown in FIG. 8, the upper surface of a cylindrical case 10 made of paper. Lid 11 made of filter materials 3 and 4 in opening
It is also possible to dispose a bottom lid 12 made of the same filter materials 3 and 4 at the lower surface opening, or to use the filter materials 3 and 4 located below the activated carbon 2 as the filter material 5 as shown in FIG. It is. In the case where the filter material 5 is not used, it is preferable that the roughness of the filter material 4 be close to that of the filter material 5.

In any case, the coarse filter material 3
Is in the upper layer, and the filter material 4, which is finer than this,
Since impurity particles 5 are in the lower layer, the impurity particles G having a large particle size are trapped in the filter material 3, and the impurity particles G that have passed through the filter material 3 are trapped in the filter materials 4 and 5. Needless to say, the impurity particles G can be trapped, and the positions where the impurity particles G are trapped differ depending on the particle diameter, and therefore, clogging hardly occurs.

FIG. 10 schematically shows a filtering state of the filter F according to the embodiment shown in FIGS. 1 to 4, and most of the impurity particles G are captured by the filter material 3. However, as described above, this filter material 3
Does not easily clog because of its largest thickness and high porosity, and fine impurity particles G that have passed through the filter material 3 are captured by the filter material 4 laminated on the lower surface of the filter material 3. You. Since the filter material 4 also has a required thickness, the filter material 4 does not clog quickly due to the capture of the fine impurity particles G.

Next, the minute impurity particles G that have also passed through the filter material 4 are captured by a large number of micropores on the surface of the activated carbon 2 for deodorizing and decolorizing oil. For this reason, the finest filter particles 5 reach the fine impurity particles G.
Is slightly residual oil, and the impurity particles G
Is also captured in the filter material 5. The amount of the impurity particles G captured by the filter material 5 is very small, so that the filter material 5 is unlikely to be clogged.

When the above-described hole 40 is provided in the filter material 4, a part of the fine impurity particles G together with the oil passing through the hole 40 pass through the filter material 4 and are captured by the activated carbon 2 and the filter material 5. . At this time, it has been confirmed by experiments that the oil permeation rate increases. By the way, in the present invention, the filter material 3, 4, 5, that is, the container 1 is formed of a fibrous system from the viewpoint of cost and handling as burnable garbage.
In this case, when disposing the oil purifier in the container 15, FIG.
The auxiliary container 6 may be used as shown in FIGS. That is, an auxiliary container 6 including a bottomed cylindrical case 60 having a hole in the bottom surface and a cover 61 having a hole is provided, and the cover 61 is detachably attached to the case 60. After the container 1 is loaded into the case 60 in the opened state, the lid 61 is closed, and the container 1 is placed in the auxiliary container 6.
In the oil purifier as shown in FIG.
5 is provided. In this case, since the auxiliary container 6 is provided, the mechanical strength of the container 1 can be reduced.
However, in order to prevent the oil from short-circuiting through the gap between the inner surface of the auxiliary container 6 and the container 1, the container 1 is attached to the auxiliary container 6 with a slight press-fitting.

The connection structure between the case 60 and the lid 61 in the auxiliary container 6 is not limited to the screw type, as shown in FIG.
A bayonet type using the projections 62 and the engaging grooves 63, and FIG.
As shown in FIG. 17, a hook type that locks a hook 64 protruding from the lid 61 to a concave portion 65 on the outer surface of the case 60 may be provided. Further, as shown in FIG. The cover 61 may be pressed by the fixing ring 66. When such a fixing ring 66 is used, there is no possibility that the container 1 may be damaged when the lid 61 is attached.

The case 60 of the auxiliary container 6 may be formed integrally with the inner cylinder 18 as shown in FIGS. In this case, although the container 1 is placed in the auxiliary container 6, it is not necessary to take out the auxiliary container 6 at the time of replacement, and the replacement is facilitated.

[0023]

As described above, according to the present invention, the above-mentioned filter material which comprises an activated carbon layer and a filter material surrounding the activated carbon layer and surrounds the activated carbon layer located above, below and beside the activated carbon layer Since it is formed as a fibrous material containing natural plant fibers, it can be treated as a combustible material, which is suitable for environmental problems and also in terms of cost. It can be provided at a low cost, and because it uses natural plant fiber, it can reliably capture fine impurity particles, provide good filtration performance, and reduce the heat of hot oil poured. The filter material located at least above the activated carbon layer should be made of natural plant fiber without causing And synthetic fibers are formed as a mixture, so that it is possible to coarsen the oil and make it easier to penetrate the oil than in the case of using only natural vegetable fibers, and to facilitate clogging upwards. Can be eliminated.

When the weight ratio between the natural plant fiber and the synthetic fiber of the filter material located above the activated carbon layer is 7: 3, the function of capturing fine impurity particles and the function of the cover 1
In each of the mechanical strength (strength of the waist) required as 1 and the heat resistant temperature of the lid 11 when the high-temperature oil is supplied, favorable results can be obtained in various points. Also, the filter material located below the activated carbon layer is formed as a bottomed cylindrical case and integrated with the filter material located on the side of the activated carbon layer, and the filter material located above the activated carbon is When the lid is formed as a lid that closes the opening, it is easy to manufacture because two members can surround the upper side, the side, and the lower side of the activated carbon layer, and the activated carbon layer only needs to be filled in the case and covered. In addition, it is possible to ensure that the oil passes through the filter material without fail.Furthermore, if the filter material is integrally provided with a flange that protrudes in the outer peripheral direction, a short path where oil does not pass through the filter Generation can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a cutaway perspective view of the lid.

FIG. 4 is a sectional view of the same case.

FIG. 5 is a cutaway perspective view showing a use state of the above.

FIG. 6 is a sectional view showing another embodiment.

FIG. 7 is a sectional view showing another embodiment.

FIG. 8 is a sectional view showing another embodiment.

FIG. 9 is a sectional view showing another embodiment.

FIG. 10 is an explanatory diagram schematically showing the same operation.

FIG. 11 is an exploded perspective view of an auxiliary container.

FIG. 12 is a sectional view of the above.

FIG. 13 is a perspective view of a lid according to the third embodiment.

FIG. 14 is a sectional view showing a use state of the above.

FIG. 15 is an exploded perspective view showing another example of the auxiliary container.

FIG. 16 is an exploded perspective view showing another example of the auxiliary container.

FIG. 17 is an exploded perspective view showing another example of the auxiliary container.

FIG. 18 is a sectional view showing still another example of the auxiliary container.

FIG. 19 is an exploded perspective view of the same.

FIG. 20 is a cutaway perspective view of a conventional example.

[Explanation of symbols]

 2 Activated carbon 3,4,5 Filter material

Claims (4)

(57) [Claims] 1. The filter material comprising an activated carbon layer and a filter material surrounding the activated carbon layer, and located above, below and beside the activated carbon layer and surrounding the activated carbon layer,
The filter material is formed of a fibrous material containing natural plant fibers, and at least the filter material located above the activated carbon layer is formed as a mixture of natural plant fibers and synthetic fibers. Oil filter. 2. The filter material located above the activated carbon layer is formed as a mixture of natural plant fibers and synthetic fibers in a weight ratio of 7: 3. 2. The oil purifier filter according to claim 1. 3. The filter material located below the activated carbon layer is formed as a bottomed cylindrical case and is integrated with the filter material located on the side of the activated carbon layer, and is located above the activated carbon. 2. The oil purifier filter according to claim 1, wherein said filter is formed as a lid for closing said opening of said case. 4. The oil purifier filter according to claim 1, wherein the filter material is integrally provided with a flange protruding in an outer peripheral direction.