JPS6314976B2 - - Google Patents

Description

Detailed Description of the Invention [Technical Field] The present invention is a cleaning method that easily, safely and cleanly filters contaminated edible oil such as tempura oil that is used or is in the process of being used, and removes coloring, odor, etc. from the oil. Regarding oil appliances.

[Background technology]

An example of an oil purifier that uses activated carbon as a filter to remove coloring, odor, etc. is disclosed in Japanese Utility Model Application Publication No. 159280/1983. However, in this publication, there are two types of filters: a coarse mesh like wire mesh and a filter made of activated carbon.
Because only two filters were used, fine sludge-like oil scum flowed into the activated carbon layer without being removed, and this prevented oil from flowing into the activated carbon layer. The time required for filtration becomes long, and in some cases, oil may stay above the activated carbon layer, resulting in a deterioration in oil purification performance.

[Purpose of the invention]

The present invention has been developed in view of these points, and its purpose is to prevent the filter body made of activated carbon from becoming clogged with sludge-like fine oil scum, etc., and to improve oil purification performance. To provide an improved oil purifier.

[Disclosure of the invention]

Therefore, the present invention provides an oil purifier in which a filter is provided in the upper part of the container and an oil storage part is provided in the lower part, in which the filter has a coarse first filter installed in the uppermost layer, and a coarse first filter installed in the lowermost layer. A third filter body made of activated carbon, and a second filter body that has finer mesh than the first filter body and is installed between the first filter body and the third filter body. It is particularly characterized in that relatively coarse impurities such as fried crumbs are removed in the first filter body, and fine impurities such as sludge are removed in the second filter body, and then, The coloring and odor of the oil are removed by a third filter made of activated carbon.

The present invention will be described in detail below based on the illustrated embodiment. This oil purifier has three types of filter bodies 1, 2 and 3, and first we will explain about the container 5. This consists of press-fitting and welding a disk that will become the bottom plate to the bottom of a cylindrical body with the part that will become the spout bulging outside. It is formed into a cylindrical shape with a bottom, and is made of metal such as stainless steel or aluminum. A pedestal 6 is attached to the lower surface of the bottom plate, and the pedestal 6 is attached to the bottom of the bottom plate, opposite to the part of the circumferential surface where the bulge 54 that serves as the pouring spout is formed. A handle 7 is attached to the side.

A pedestal 6 made of synthetic resin is attached to the lower surface of the bottom plate of the container 5 via a bottom plate metal fitting 60. The bottom plate fitting 60 has a hole 66 that engages with a positioning projection 65 protruding from the bottom surface of the bottom plate of the container 5.
It also has several countersink parts 67 with female threads cut on the periphery and a fitting hole 68 in the center, and the protrusion 61 in the center of the base 6 is connected to the fitting hole 68. The pedestal 6 is positioned by fitting into the counter sink part 67.
It is fixed to the container 5 via the bottom plate fitting 60 by screws 69 screwed into the bottom plate.

Both handles 7 have a main body 70 made of synthetic resin.
and a cover 71, and is attached to the container 5 via a pair of upper and lower handle fittings 76, 76. Each handle fitting 76 has its base end connected to the container 5.
The main body part 70 is attached to the handle fitting 76 by screws 78, and the cover 71 is attached to screws 79. Therefore, it is attached to the main body part 70. Here, the main body part 70 forms a space 74 between the pair of upper and lower handle fittings 76, 76 into which fingers can be inserted, and between this space and the outer peripheral surface of the container 5, the main body part A partition piece 72 formed integrally with the handle 70 is positioned to prevent the fingers gripping the handle 7 from coming into contact with the outer circumferential surface of the container 5, and the partition piece 72 itself is also placed on the outer circumferential surface of the container 5. Since there is no contact between them and there is a heat insulating space 73 between them, even when hot oil is in the container 5, the fingers holding the handle 7 may get burnt or feel hot. It is made sure that there is no such thing. Furthermore, the upper end of the handle 7 forms a space 75 that is open upward and on both sides between the upper end of the upper handle fitting 76 and the outer peripheral surface of the container 5. filter body 1
The knob 14 can be accommodated in this space 75.

Next, the structure of the container 5 will be explained. This container 5, which has a cylindrical shape with a bottom and a spout portion formed as a bulging portion 54, has a circular ring body 50 made of metal such as stainless steel or aluminum along its upper inner circumferential surface. is firmly fixed, and an oil filler fitting 55 is removably inserted into the spout. The ring body 50
is a structure in which upper and lower annular projections 51 and 52 and a plurality of projections 53 located above these annular projections 51 and 52 protrude inward. The section 51 has a trapezoidal cross section, and the lower annular protrusion 52 has a semicircular cross section. It is divided into a spout portion formed as an outlet 54. still,
The upper end of the container 5 and the upper end of the ring body 50 are cut out at the portions facing the space 75 of the handle 7.

The bulging portion 54 serving as a spout is formed from a position slightly below the vertical center of the container 5 to the upper end of the container 5, and the upper end is cut off diagonally. The oil filler fitting 55 is inserted therein as described above. Swelling part 5
The oil filler fitting 55, which is inserted until its lower end abuts a protrusion 56 protruding from the inner surface of the oil filler 55, has a semicircular horizontal cross section, and the curvature of the horizontal cross section increases upward. When inserted into the spout, it protrudes above the upper end of the bulge 54 cut off as described above, and creates a gap 57 between it and the inner surface of the bulge 54.
It has become something that gives rise to

The lid 4 that closes the upper end opening of the container 5 formed as described above is composed of two parts: a main lid 40 and an oil filling lid 41. The main lid 40 has a seal ring 42 attached to its outer circumferential surface that contacts the inner circumferential surface of the ring body 50, and the above-mentioned protrusions in the ring body 50 are fitted into the ring body 50 and rotated. A plurality of engagement grooves 43 that engage with the portion 53
is formed on the outer circumferential surface, and the upper surface is provided with a pair of semicircular recesses that become deeper toward the center at an interval, thereby providing a knob portion 44 between the two recesses. Furthermore, a recess 45 is provided at one end side of the knob portion 44 on the upper surface.

The oil filling lid 41 has one end pivotally supported by the main lid 40, and when it is folded down, the spout is closed to prevent dirt, dust, insects, etc. from entering, and when it is raised, the spout is opened. And oil filler lid 4 here
The opening/closing of the pouring spout by the tilting operation of step 1 is biased in both directions by a spring 46 disposed in the recess 45 of the main lid 40, starting from the middle of the tilting angle range of the oil filler lid 41. It has become a common thing. In other words, the spring 46 holds both the spout closed state and the spout open state.

Now, three types of filter bodies 1, 2, and 3, ie, first, second, and third, are arranged in the container 5.
The first filter body 1 has a truncated conical shape made of metal such as stainless steel or aluminum, and has a lower diameter smaller than the upper diameter.
It is constructed by disposing a wire mesh 11 of 40 meshes, and a wire mesh handle 13 provided with the knob 14 is attached by welding. Note that the knob 14 is made of synthetic resin, heat-resistant rubber, or the like.

The second filter body 2 is formed by molding paper into a cylindrical shape with a bottom, and in particular has many vertical pleats formed on the circumferential surface, and the inside of the cylindrical case 8. are placed in the container 5. The remaining third filter body 3 is configured as a cartridge using activated carbon 33 as a main member for filtration, and is made of a metal such as aluminum and has a cylindrical shape with a bottom and has a number of holes drilled in the bottom surface. Oil purification case 3
0, activated carbon 33 is sandwiched between upper and lower nonwoven fabric filters 31 and 32 made of polyester, etc.
At the same time, a perforated upper plate 34 made of punched metal is installed in the upper opening of the oil purifying case 30.
The case 8 is formed by caulking and fixing the case 8.
The container 5 is housed in a state where it is installed at the lower end opening of the container 5. The activated carbon 33 is the nonwoven fabric filter 3
Due to the existence of 1 and 32, there will be no leakage.

The case 8 is housed in the container 5 by having its upper edge locked onto the annular protrusion 51 of the ring body 50. An arc-shaped hanger 81 is attached to the upper part, and a lower part is provided with an arcuate handle 81. A small diameter cylindrical portion 83 is formed through the tapered surface 82, and this small diameter cylindrical portion 8
3. An annular packing 84 having oil resistance is installed on the inner peripheral surface. The third filter body 3 formed as a cartridge is housed in the case 8 from above, and the flange portion at the upper end of the oil purifying case 30 is brought into contact with the gasket 84, so that the small diameter cylindrical portion 83
the second
The filter body 2 is arranged in the upper part having a large diameter, with the lower end peripheral edge placed on the tapered surface 82 of the case 8. Note that at this time, spaces are created between the outer circumferential surface of the second filter body 2 and the inner circumferential surface of the case 8, and between the lower surface of the second filter body 2 and the upper surface of the third filter body 3. has been done.

The second filter body 2 and the third filter body 3 are configured such that the case 8 attached thereto is placed in the container 5 and the case 8 is supported by the annular protrusion 51 of the ring body 50 as described above. Thus, it is installed inside the container 5. Further, the first filter body 1 is housed in the container 5 with the upper end flange of the case 10 locked to the upper edge of the case 8, and the wire mesh handle 13 is attached to the container 5 and the ring body 50. The knob 14 is positioned in the space 75 of the handle 7 by being passed through the notch in the handle 7. Furthermore, at this time, the case 10 of the first filter body 1 enters inside the second filter body 2 housed inside the case 8. This prevents the second filter body 2, which is a paper filter, from falling down.

Now, in the oil purifier configured in this way, the oil used for tempura etc. is poured with the lid 4 removed. At this time, the oil is first passed through the first filter body 1 which is a wire mesh. After removing relatively coarse impurities such as fried residue, it passes through the second filter body 2. and the second which is a paper filter
After fine sludge-like impurities are removed by the filter 2 , the presence of the packing 84 ensures that the particles pass through the third filter 3 . In addition, the inner diameter of the second filter body 2 is made larger than the diameters of the first filter body 1 and the third filter body 3, and the second filter body 2
As mentioned above, the filter has many folds to increase its surface area, so a large amount of oil can be poured in at once, and the filtration time is short. Even at this time, the case 10 of the first filter body 1 prevents the second filter body 2 from falling down.
The oil reliably passes through the second filter body 2. Furthermore, since the tapered surface 82 is provided on the case 8 and the gasket 84 is located below the tapered surface 82, oil will not remain in the case 8.

The oil that has reached the third filter body 3 is diffused when passing through the upper plate 34 and the nonwoven fabric filter 31, and coloring components, odors, etc. are adsorbed and removed while passing through the layer of activated carbon 33. Further, due to the presence of the nonwoven fabric filters 31 and 32, the activated carbon 33 will not be mixed into the purified oil. The oil that has passed through each filter body 1, 2, and 3 in this way is stored in a container 5.
It is stored in the oil storage tank at the bottom of the tank. The above-described series of oil purifications is possible even when the lid 4 is closed because air is circulated with the outside through the cutout for passing the wire mesh handle 13.

When reusing the oil stored in the oil storage tank, it is only necessary to open the oil filling lid 41 instead of opening the entire lid 4. When the oil filler lid 41 is opened, the oil filler lid 41 is held in that state by the spring 46, so that the oil filler lid 41 will not close even if the container 5 is tilted. Even if the container 5 is tilted greatly, the main lid 40
Since the seal ring 42 is in pressure contact with the inner surface of the ring body 50, there is no possibility that the entire lid 4 or the first filter body 1 will come off, and the oil will not leak into each filter body 1, 2, 3. Even if oil flows backwards, the presence of the seal ring 42 prevents oil from overflowing from areas other than the spout. On the other hand, the oil flowing out from the spout is guided by the oil filler fitting 55 and exits. This oil filler fitting 55 is provided to prevent oil from dripping from the filler spout, and even if oil drips down the outer surface of the oil filler fitting 55, this oil will bulge out from the oil filler fitting 55. It enters the gap 57 between the inner surface of the bulging portion 54 and returns to the oil storage tank through a small gap between the lower end of the oil filler fitting 55 and the protrusion 56 on the inner surface of the bulging portion 54. This prevents oil from dripping on the outer surface of the container 5.

When discarding impurities accumulated in the first filter body 1, it is sufficient to remove the lid 4, pinch the knob 14, and take out the first filter body 1. Even if you do this immediately after purifying the hot oil, the knob 1
You won't get burned from the presence of 4, and you won't get your hands dirty. Although such a knob 14 is provided, the knob 14 is normally located at the same position as the handle 7 in the circumferential direction of the container 5.
is located here, the knob 14 is located in the space 75 located between the handle 7 and the container 5, and the width of the knob 14 is made smaller than the width of the handle 7. Even if the knob 14 gets in the way, if you move the knob 14 carelessly, or if you topple the oil purifier, an external force will be applied to the knob 14 and the lid 4 will be removed. The knob 14 will not bend or become loose.

Not only is the used second filter body 2 discarded and replaced with a new one, but also the third filter body 3, which has lost its adsorption capacity or has decreased its adsorption capacity, is also discarded along with its cartridge. , but when replacing the second filter body 2 and the third filter body 3, it is sufficient to take out the case 8 as a whole. Since the handle 81 provided at the upper end of 8 can be used, it is possible to do this without getting your hands dirty. By using the case 8 to arrange the second filter body 2 and the third filter body 3 to be discarded, the replacement work is facilitated.

The embodiment shown in FIGS. 6 and 7 differs from the above embodiment only in the configuration of the second filter body 2, and the second filter body 2 here is as shown in FIG. A cylindrical tube 2 made of metal such as stainless steel or aluminum with an open top and bottom.
0, a paper filter 22, and a ring-shaped spring 21 for attaching the paper filter 22 to the lower end opening of the tube 20.
The spring 21 is placed on the lower surface of the cylinder 20 and aligned with the outer surface of the cylinder 20, and in this state, the spring 21 is fitted into the annular groove 23 on the outer circumferential surface of the cylinder 20, thereby attaching the spring 21 to the cylinder 20. The second filter body 2 configured as described above is installed in the case 8 by press-fitting the tube 20 with the paper filter 22 attached thereto. In this case, although the case 10 of the first filter body 1 is not inserted into the second filter body 2, the case 10 of the first filter body 1 and the second filter body
Because there is a space between the second filter body 2 and the outer circumferential surface of the second filter body 2 and the inner circumferential surface of the case 8, it is possible to pour a large amount of oil at once, and the oil is It passes through the paper filter 22 reliably.

To replace the paper filter 22 in the second filter body 2, it is sufficient to grasp the handle 24 attached to the cylinder 20 and pull it upward. The handle 24 has an arcuate shape and is attached to the tube 20 by passing both ends through a pair of cut and raised portions formed on the tube 20 and by caulking the cut and raised portions.

[Effect of the invention] As described above, in the present invention, the coarse first
a third filter made of activated carbon installed at the bottom layer, and a filter whose mesh is finer than that of the first filter and installed between the first and third filter. A second filter body is provided.
Between the removal of relatively coarse impurities such as fried crumbs done in the first filter body and the removal of coloring and odor done in the third filter body, the removal of fine impurities like sludge is carried out in the second filter body. Since the third filter body made of activated carbon is not clogged with sludge-like oil scum and the adsorption capacity is reduced, the third filter body made of activated carbon is The third filter can be effectively used until the end of its life.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention, FIG. 2 is a perspective view of the same, FIGS. 3 and 4 are exploded perspective views of the same, FIG. 5 is a partial cross-sectional view of the same, and FIG. The figure is a longitudinal sectional view of another embodiment, and FIG. 7 is an exploded perspective view of the same as above, in which 1 is a first filter, 2 is a second filter, 3 is a third filter, and 4 is an exploded perspective view of the same. The lid and 5 indicate the container.

Claims (1)

[Scope of Claims] 1. In an oil purifier having a filter in the upper part of the container and an oil storage part in the lower part, the filter has a coarse first filter installed in the uppermost layer and a first filter installed in the lowermost layer. a third filter body made of activated carbon, and a second filter body that has finer mesh than the first filter body and is installed between the first filter body and the third filter body. An oil purifier characterized by: 2. The oil purifier according to claim 1, wherein the first filter body is a wire mesh having 30 to 40 meshes. 3. The oil purifier according to claim 1, wherein the second filter body is a paper filter. 4. The oil purifier according to claim 1, wherein the second filter body is cylindrical with a bottom. 5. The oil purifier according to claim 4, wherein the first filter body is located within the upper part of the second filter body. 6. The oil purifier according to claim 1, wherein the second filter body and the third filter body are integrally constructed, and a hanger for removal is provided at the upper end thereof. 7. The oil purifier according to claim 1, wherein each of the filter bodies is approximately cylindrical and arranged on a concentric axis, and the second filter body has the largest inner diameter. vessel. 8. The oil purifier according to claim 1, wherein the first filter body and the second filter body are disposed with a space interposed between them.