KR20080100320A - A box type oil filter sheet and a frame fixes the filter sheet - Google Patents

Abstract

A box-type oil filter sheet and a frame for fixing filter sheet are provided to easily remove residues remained on four circumference edge portions as maintaining airtightness. An oil filter paper is mounted between a mesh(30) and a button(20) in a square oil filter tub(50) and has an outlet formed at lower part thereof, wherein the mesh and button are sequentially mounted on the upper part of the outlet. The oil filter paper comprises a rectangular lower filtration surface and a side wall perpendicularly formed on four edges of the filtration surface. The width of the filtration surface is larger that the width formed by the external shape of the button, and the height of the side wall is higher than that of the cross section of a pressing part of the button.

Description

A box type oil filter sheet and a frame fixes the filter sheet}

The present invention relates to a filter paper fixing frame for fixing an oil filter paper in an oil filtration tank which is a core component of a commercial oil filter for commercial use, and a box-type oil filter paper specialized in the filter paper fixing frame.

The oil filtration system used in small and medium-sized restaurants is, unlike the oil filtration facilities of large plants, the majority of small and medium-sized cooking oil storage container and small portable equipment using a low-pressure pump.

These small oil filters are manufactured with a focus on volume and operation structure, ease of use and reliability, and it is difficult to adopt a high pressure multistage filtration step such as a large oil filtration system in consideration of product price and operating cost.

Therefore, it is mainly designed as a low pressure filtration stage of one or two stages, and is usually performed by a paper filtration filter.

The filtration filter is often a pulp filter paper or a repetitive reusable filter is a fine metal mesh plate.

Referring to the edible oil filtration device of Korean Patent Laid-Open Publication No. 2005-0081986, it can be seen that rarely a disk-type metal filter is used as the filtration filter, which is advantageous in that it is resistant to heat, but has a disadvantage in that the washing problem is serious when repeated use. have.

In other words, in restaurants dealing with frying oil that is mixed with huge amounts of frying residue (remnants) supplied from the outside, rather than oxidizing contaminants in the oil like general lubricating oil, a large amount of frying residue is deposited on the filter quickly. This cannot be handled by the filtration filter, and even if it is repeatedly washed and used, the fine particles that are not washed gradually reduce the filtration efficiency of the filtration filter, and thus, even the expensive filtration filter needs to be replaced.

In addition, the cooking oil used in chicken and various kinds of fried foods must be perfectly filtered even with very fine debris and the filter oil should not have an unpleasant smell. Disposable filter paper should be used.

Filter paper is a paper used for the selective filtering of deposits and impurities while passing through liquids or gases. The disposable replacement filter paper made of pulp is a paper in which fibers are entangled with a lot of small holes about 0.00X to 0.0X mm in diameter. Solvents, such as water (or oil), and small solutes dissolved or ionized in the solvent may pass through these pores, but large solutes do not pass between them.

Maximizing the thickness at the same basis weight and maintaining the shape of the tissue is the key to its performance. It is mainly made of natural pulp, which is manufactured through the pulp dissociation process, the cleaning process, the beating and the filter paper formation, the press drying process. Cut it to a suitable size and use it as it is or fold it.

Figure 1 shows each part configuration of a conventional small capacity oil filter.

The small-capacity oil filter disassembled and displayed in FIG. 1 places the filtration tank in the lower part of the cradle with wheels, installs a pump unit in the upper part, and soaks the contaminated oil by immersing the filter paper covered with a mesh (mesh = supporting mesh) in the filter tank. It is designed to suck.

In other words, the contaminated oil discharged to the filter tank through the discharge pipe is contained in the filter tank and sucked toward the oil filtration part composed of the mesh connected to the pipe joint on the suction hose side and the filter paper covered on the mesh, and the contaminants are attached to the filter paper surface and filtered. The oil is circulated through the pump.

In this process, the oil filter part (the part of the oil filter paper covered by the mesh) is removed from the filter tank at any time, and the contaminants (such as fried powder) on the surface of the filter paper are shaken off, or the filter paper bag is peeled off and discarded and replaced with a new one again. By repeating these operations, the oil contained in the filtration tank is gradually cleaned.

The above process has a very good advantage that the filter paper can be replaced while performing continuous filtration in the filter tank containing the hot oil in use.But basically, the filter bag of the filter bag is small and the temperature of the filter tank is so high that the user can change the filter paper. There is a risk of serious burns due to inadvertent or high temperature splashing oil during operation.

On the contrary, FIGS. 2 and 3 are formed by fixing the outlet to the bottom of the filtration tank, which is not the structure of dipping and removing the filtration unit in FIG. It is a structure of an oil filtration tank which is fixed by pressing with a push button and then filtering while removing contaminated frying oil from top to bottom.

This configuration is significantly cheaper in terms of maintenance costs (filter production cost) except that all the frying oil must be emptied from the filter tank when the filter paper is replaced, and the design of the main components such as the oil circulation line design and the mesh or the presser is simplified. The manufacturing cost is also reduced.

Therefore, many domestic catering establishments mainly use the filtration tank of the structure shown in Figs. 2 and 3 due to cost and operation management problems.

All oil refiners currently in circulation in Korea are composed of a motor, a pump and a sump of oil, and the type of natural pulp filter paper entering the oil refiner is a flat quadrangle, and the specific structure of the filter tank is shown in FIGS. 2 and 3.

However, in the filter tank formed at the bottom of the outlet as described above, there are various inconveniences in the process of installing and replacing the flat paper filter paper. As two representative inconveniences, it is difficult to accurately position the filter tank in the process of installing the oil filter paper. In the process of removing the filter paper (the right side of FIG. 8), it is very inconvenient to remove the oil residue trapped at the bottom edge of the filter tank, that is, the presser and the filter tank where the filter paper is located. (Figure 3)

Shown on the right side of Figure 4 is a general planar paper oil filter paper. This is easy to lay on the bottom of a dry oil filtration tank, but hard to lay on the bottom in a wet filtration tank with hot, oiled inner walls. This is because in the process of dropping the filter paper, it becomes easier to stick to the side before it is stuck in place.

At this time, if the frying oil has not cooled, the inside of the filter tank is hot, so it is difficult to handle the filter paper easily, and in this process, the new filter paper may not be used properly and may be damaged due to wet tearing.

Therefore, in the small and medium-sized catering establishments, which are under pressure of costs such as many small chicken establishments in Korea, the development of an improved filter paper that facilitates replacement and post-cleaning operations in the filtration tank as shown in FIG. 3 without greatly increasing the supply cost of the filter paper is urgently needed. Needed.

In order to achieve the object of the invention as described above, the present invention is first completed using the following main problem solving means.

First, the inventors focused on reinforcing the structural strength of the filter paper so that it does not stick to the oil remaining on the inner wall of the filter tank during the seating process. (Box type filter paper)

Secondly, the problem that the box-type filter paper may cause during the mounting of the pusher, which did not occur in the conventional flat filter paper, was found, and the new cross-sectional shape was overcome by designing the mesh with the size of each side in accordance with the other presses and the presser. It was.

Third, in the design process of the clasp, the strength reinforcement and workability of the clasp were further considered.

Finally, in the third process, the functional limits of the presses were found and reflected in the mesh design to overcome the side effects of the modified presses.

In addition, the introduction of boxed filter paper may seem natural in some respects, but in the specific application process there are a number of technical challenges (e.g. leaking unfiltered oil into gaps in the box-type folding process; Since the corners of the box were torn, etc., it was difficult to try easily.

In the following detailed description of the invention, technical considerations follow.

As described above, the filter paper fixing frame (mesh, pusher) of the present invention and the box-type oil filter paper applied thereto have almost no difference in manufacturing and supply cost compared to the conventional filter paper fixing frame and the flat oil filter paper. Esau produces an exceptionally effective oil filtration tank.

In order to more specifically represent the main technical features of the present invention will be described in more detail below with reference to an example of the present invention included in the drawings.

However, in the embodiment of the invention or the specific example described below, the components including specific terms and their specific coupling structures limit the idea that is inherent in the technical features of the present invention. It is not known in advance.

The filter paper shown on the left side of FIG. 4 is one embodiment of the box-shaped oil filter paper of the present invention, and the commercialized design further developed based on this design is the box-shaped oil filter paper 10 (folded immediately before use) of FIG. 5A.

The filter paper 10 has a filtration surface 11, side walls 12, fold lines 13, and fitting protrusions 14 in the plan view (dimension width * length * height = 449 * 320 * 50 (mm)) of FIG. 5B. ), Fitting groove (15), folding wings (16), etc. can be named for each part configuration, other components can be understood intuitively, but the folding groove (part that can be folded in the four corners by hatching ( 13) allows the side wall of the filter paper to lie down toward the bottom of the filter paper while the filter paper 10 is folded in a box shape. will be.

5c is a state in which the folded state of the box edge portion of the filter paper is easily released, and the unfiltered oil leakage problem occurs toward the fitting groove 15, which is the first technical difficulty. (This is simultaneously solved with the problem of preventing the tearing of the filter paper in FIGS. 7 and 8 described later.)

6 is an assembled perspective view showing clearly the assembling situation of the filter paper and the filter frame mounted on the filtration tank 50.

In the drawing, the filter frame is composed of a pusher 20 and a mesh (mesh = supporting mesh) 30. First, the mesh 30 is mounted on the bottom of the filter tank, and then the box-shaped filter paper 10 is seated on the mesh, and then pressed. It is the structure which presses with the iron 20, and fixes it firmly.

At this time, the role of the mesh 30 serves to support the filter paper with respect to the outlet so that the filter paper is not sucked into the filter when the filtered oil is discharged into the filter oil outlet which is drilled at the bottom of the filter tank 50, and the pusher 20 In addition, the four edges of the filter paper is stamped tightly to seal between the bottom of the filter tank and the filter paper.

Next, the role of the pusher 20 is to press the filter paper 10 firmly so that the filter paper is shaken by the oil flow in the filter tank and consequently does not lift the filter paper from the bottom of the filter tank. Pressing and squeezing the edges also seals the gap between the bottom of the filter tank and the filter paper.

Figure 7 shows the position where the pusher (20-red) and the mesh (30-blue) contact the filter paper so that the concepts described above can be easily understood. In the figure, the pusher 20 is located inside the fitting groove into which the fitting projection is inserted. Because of this, a small amount of unfiltered oil penetrating into the fitting groove is located outside the pressing surface (red) and as a result cannot be discharged without being filtered. (In fact, as shown in FIG. 8 to be described later, the width of the filter surface 11 is slightly reduced in accordance with the filter paper deformation section 40 between the mesh and the clamp, so that the box-shaped four corners are slightly separated from the clamp as in FIG. It is not positioned so that it is almost in contact with the outer rim of the press.)

In addition, the filter frame of the present invention increases the size of the mesh (30) close to the size of the clasp to close the filter tank to compensate for the reduction of the pressing surface while adding a space to lightly filter paper in the form of fitting the clasp and the mesh to each other Was achieved.

The gap 40 between the mesh and the pusher, which is shown in blue in the figure, is the area where the pusher and the mesh draw the filter paper from above and below. This is difficult to conceive of in conventional wide width presses (presses applied to conventional planar filter papers). (See the right figure in FIG. 8)

FIG. 8 is a cross-sectional view of the unique design of the press and mesh to overcome the structural advantages and technical limitations of the box-shaped filter paper as described above.

Conventional presses cannot be as narrow as the presser 20 of the filter frame of the present invention, so the presser must be wider. Under such a design, the mesh and the presser need to be narrowed to slightly filter the filter paper. Because there is no.

If the conventional presses are narrowed, the width of the presses becomes smaller, and if the weight of the presses is too heavy, the filter paper is torn due to the deformation amount of the filter paper deformed due to the mesh, and the weight of the presses is light. In this case, the filter paper is allowed to pass through the positional deformation, and the filter paper may be squeezed out of the presser.

However, if the presser is designed by reducing the presser surface width of the presser and increasing the height of the presser surface, the weight of the presser does not increase, thus allowing a certain amount of deformation of the filter paper between the mesh and the presser. Therefore, the tearing of the filter paper is also prevented, and the phenomenon of the filter paper being squeezed out inside the presser is prevented by designing the filter paper in a box shape.

In other words, the function of the side wall of the box-shaped filter paper has a function of compensating for the reduced resistance of the press in addition to the function of simply processing the filter residue at the edge.

As described above, it is advantageous in terms of mechanical design that the pressing surface has a pressing surface width higher than the pressing surface height when the cross section is viewed from the side. This is because the pusher will bend in the direction of lifting the pusher knob. To make the pusher as light as possible, you must thin the pusher. However, in the conventional flat filter paper, when the presser is made thinner, the pressing force of the presser is weakened, and thus, the filter paper may stick out into the presser during the filtration process. This results in leakage of unfiltered oil into the outlet.

As in the above description of the filter paper side wall, the narrow pressing surface width of the presser of the present invention is defective with the side wall 12 portion of the box-shaped filter paper so that the filter paper does not stick out into the pressing member despite the decrease in the pressing resistance caused by the pressing surface reduction. As a result, the pusher can be made relatively light and thin.

As shown in the right side of FIG. 8, the conventional pusher 20 ′ is weaker in the upward and downward force because the width of the pressing surface is larger than the height of the pressing surface. Therefore, in order to prevent the deflection of the pusher, the pusher knob is installed on the long side. This can be inconvenient because it is not possible to hold both hands apart when holding and holding the pusher knob, and both hands must be held back and forth. (You can think of a person standing on the right side of the drawing.) However, as shown in the left figure of FIG. Since the presser 20 of the present invention has a structure in which the presser surface width is higher than the presser surface height (resistive to the bending moment), even if the presser handle is installed on the short side, the presser does not bend. This is a very significant technological development given the workability of workers working near hot filtration tanks, often replacing filter paper.

The advantages of the boxed oil filter paper, as well as the relationship between the meshes and the presses and the geometrical position of the filter paper described above, are well illustrated in the top view of FIG. 8. The general planar filter paper is simple plate-shaped, so the manufacturing cost may be small, but the inconvenience of actual use is very frequent. As shown in the drawing, when the mesh is installed in the filter tank and the filter paper is next laid, the box-shaped filter paper 10 is easily and accurately seated while maintaining its shape due to the strength of the four side walls, but the general filter paper 10 'is often stuck to the side wall. Can be. This problem occurs more often, especially when you are in a hurry to replace the filter paper, and if you work prematurely, you can break the filter paper and if the inside of the filter tank has not cooled down completely, there is also a safety problem for the operator.

On the other hand, there is a slight gap between the box-type oil filter paper and the inner wall of the filtration tank as shown in the left figure of FIG. 8, even if the frying residue precipitates and the filter paper is removed, it may be thought that the unfiltered water may remain at the inner edge of the filtration tank. However, this gap is so small that once the box-type oil filter paper is installed, the side wall of the filter paper and the inner wall of the filter tank quickly adhere to each other due to the oil component remaining on the inner wall surface of the filter tank.

In other words, the box-type filter paper is box-shaped before it is mounted in the filter tank, but once it is installed, the side wall is slightly crushed (the amount of dragging inward by the press and mesh) makes contact with the inside of the filter tank in a curved shape rather than a right angle shape. In this case, the oil to be filtered is completely filled with the inside of the filter tank.

A total of eight steps of Figure 9a to Figure 9b is taken with a photograph of the replacement of a typical filter paper. In the figure, a pusher having a wide pressing surface has a substantial amount of fried residue on its upper surface, which must be cleaned separately.

After removing the presser, use a knife or the like to remove the fried residue that is firmly attached to the edge and remove the filter paper. Usually, two filter papers are laid down and the upper filter paper is discarded, and the existing filter paper is lifted up and a new filter paper is put down. In this process, the frying residue strongly adhered to the presser and the edge of the filter paper will inevitably remain in the filter tank and must be removed separately after the filter paper is removed.

Figure 10 is a photograph of the process of mounting and removing the filter paper fixing frame and the box-shaped oil filter paper of the present invention.

As shown in the picture, the widened mesh increases the drainage efficiency of the filtration tank, and the pusher knob formed on the short side improves workability. And the filter paper removal operation | movement can be performed simply by grasping and pulling in the side wall of box-shaped filter paper.

While the embodiments of the present invention have been described in detail with reference to the drawings, the technical spirit of the present invention is not limited to the above embodiments.

In other words, those of ordinary skill in the art to which the present invention pertains may utilize the technical spirit contained in the specification and drawings of the present invention, and as necessary, simple modifications and simple changes that are not included in the specification and drawings of the present invention. An extended example may be further implemented, but this is also obviously included in the scope of the technical idea uniquely possessed by the present invention.

1 is an exploded view of a conventional small capacity oil filter.

Figure 2,3 is the structure of the oil filtration tank is fixed to the bottom of the filter tank and the mesh is seated on the bottom of the filter tank was laid on the bottom of the flat paper-type filter paper and pressed with a push.

Figure 4 is a comparison picture of the box-type filter paper (initial type) and the flat filter paper.

5 is a structural name and structure of each part of the present invention box-shaped filter paper and the filter frame.

6 is an assembled perspective view showing the assembly state of the filter paper and the filter frame mounted on the filter tank.

FIG. 7 shows the position where the press and mesh contact the filter paper. FIG.

FIG. 8 is a cross-sectional view illustrating the unique design of the press and mesh to overcome the structural advantages and technical limitations of boxed filter paper; FIG.

Figure 9 is a photograph taken the replacement of a typical filter paper.

Figure 10 is a photograph of the process of mounting and removing the filter paper fixing frame and the box-type oil filter paper of the present invention.

* Explanation of the reference numerals for the main parts of the drawings

10: filter paper 11: filter surface

12: sidewall 13: fold line

14: fitting protrusion 15: fitting groove

16: folding wings

20: press 30: mesh (support mesh)

40: gap between mesh and pusher 50: filter tank

Claims (7)

A discharge port is formed on the bottom surface, and the mesh 30 and the pusher 20 are sequentially seated on the discharge port, and the mesh 30 and the pusher 20 are in an oil filtration tank 50 having a rectangular cylindrical shape. In the oil filter paper (10) mounted between the), Rectangular lower filtration surface 11; And a side wall 12 formed perpendicular to four circumferences of the filtration surface 11, The width of the filtration surface 11 is wider than the width of the outer shape of the pusher 20, Box side oil filter paper, characterized in that the height of the side wall (12) is equal to or higher than the height of the cross-sectional area of the pressing portion (20). The length of each side of the said filtering surface 11, The length of each side corresponding to the filtration surface 11 of the pusher 20 and the height of each side corresponding to the filtration surface 11 of the mesh 20 is greater than or equal to Boxed oil filter paper. The height of each side of the side wall 12, The sum of the cross-sectional height of each side and the cross-sectional width of each side corresponding to the side wall 12 of the presser 20 and the height of the vertical step formed by the mesh 20 and the filtration tank 50 are all equal to or greater than Box-type oil filter paper, characterized in that large. The side wall 12 of claim 3, A folding blade 16 for folding the filter paper 10 into a box shape; A fitting protrusion 14 and a fitting groove 15 for folding and fixing the portion into which the folding wing 16 is inserted; Box-type oil filter paper, characterized in that further comprises a fold line (13) of the diagonal direction for refolding the filter paper 10 in the form of flat paper. In the filter paper fixing frame for fixing the box-shaped oil filter paper 10 to the oil filter tank 50 having a discharge port is formed on the lower surface, the rectangular cylindrical shape, A clamp 20 having an outer length of each side that is less than or equal to the length of the inner side of the filter tank 50 minus twice the thickness of the side wall 12 of the filter paper 10; It has an outer length of each side that is smaller than the inner side of each side of the presser and is equal to or greater than the length of the inner side of each side of the presser minus twice the value of the thickness of the filtration surface 11 of the filter paper 10. Mesh 30; Filter paper fixing frame configured to include. The method of claim 5, wherein the pusher 20, A filter paper fixing frame, characterized in that it has a vertically long cross-sectional shape in which the cross-sectional height of the pressing portion is larger than the pressing portion cross-sectional width. The method of claim 5, wherein the pusher 20, Filter paper holding frame characterized in that the handle is installed on the short side.

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