JP2001205020A - Oil cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil cleaning apparatus capable of effectively removing frying settlings or other impurities in oil used in a fryer or the like to simply clean the oil. SOLUTION: This oil cleaning apparatus is constituted by providing an oil tank 2 receiving oil to be cleaned, a primary filter 4 for primarily filtering the oil in the tank 2, a secondary filtering treatment column 6, the replaceable roll-shaped secondary filter 8 inserted and arranged in the secondary filtering treatment column 6, an oil guide pipe 10 for guiding the primarily filtered oil to the secondary filtering treatment column 6, an oil feed pipe 13 feeding out the oil secondarily filtered in the secondary filtering treatment column 6 to be cleaned, and the pump 12 provided on the way of the oil guide pipe 10 so as to feed the oil in the oil tank 2 to the secondary filtering treatment column 6 in a movable apparatus body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil purifying apparatus used for a fryer or the like to purify dirty oil.

[0002]

2. Description of the Related Art When frying with a fryer, impurities such as frying, odor and moisture are gradually generated in the oil in the oil tank with the progress of the frying operation, so that the oil becomes dirty and the quality of the frying is reduced. Because of the deterioration, it is necessary to remove such impurities to purify the oil. Conventionally, workers
Since the frying floating in the oil in the oil tank is scooped with a net between frying operations, relatively large frying can be removed, but fine frying, smell, moisture, etc. passing through the mesh can be removed. The impurities composed of the fine particles cannot be removed, and the work is extremely troublesome.

[0003] The present invention provides an oil purifying apparatus that can automatically remove not only fries in oil used for fryers and the like but also impurities formed of fine particles such as odor and moisture contained in oil. The purpose is to: Another object of the present invention is to provide an oil purifying apparatus capable of purifying oil in an oil tank such as a fryer and cleaning the oil tank such as removing dirt from the inner surface of the oil tank.

[0004]

According to the first aspect of the present invention, there is provided an oil purifying apparatus, comprising: a movable apparatus main body; an oil tank for receiving oil to be purified; A primary filter 4, a secondary filtration tube 6,
An exchangeable secondary filter 8 in the form of a roll, which is inserted into the secondary filtration tube 6, an oil guide tube 10 that guides the primary filtered oil to the secondary filtration tube 6, and a secondary filtration tube 6.
Oil supply pipe 13 for sending out oil purified by secondary filtration in the pipe
And a pump 12 provided in the middle of the oil guide pipe 10 so as to pressurize the oil in the oil tank 2 to the secondary filtration processing cylinder 6.

[0005] A second aspect of the present invention is the oil purifier according to the first aspect, wherein the bypass pipe 1 branches from the pump discharge side of the oil guide pipe 10 and connects the oil guide pipe 10 and the oil feed pipe 13.
5, a switching valve 16 is provided at a branch of the bypass pipe 15 from the oil guide pipe 10, a tip end of the oil supply pipe 13 is connected to the purified oil supply pipe 18, and the oil tank 22 is switched by the switching operation of the switching valve 16. A cleaning circuit including an oil guide pipe 10, a bypass pipe 15, an oil feed pipe 13, and a supply pipe 18, and a filtration processing circuit including an oil tank 22, an oil guide pipe 10, a secondary filtration processing cylinder 6, an oil feed pipe 13, and a supply pipe 18. It is characterized in that either one is selectively formed.

According to a third aspect of the present invention, in the oil purifying apparatus according to the first or second aspect, the purified oil supply pipe is provided with a hose connected to the oil supply pipe and a nozzle connected to a tip of the hose. 20 and a heat-insulating gripping portion 34 provided at the base end of the nozzle 20.

According to a fourth aspect of the present invention, in the oil purifying apparatus according to any one of the first to third aspects, a primary filter 4 for a primary filtration process is provided in the oil tank 2 and has substantially the same shape as the tank 2 and is provided at the bottom. The filter processing case 5 is detachably provided.

According to a fifth aspect, in the oil purifying apparatus according to any one of the first to fourth aspects, a caster 29 is attached to a lower portion of the apparatus main body 1.

[0009]

FIG. 1 is an external perspective view of an oil purifying apparatus according to the present invention, and FIG. 2 is a longitudinal sectional view showing a state of use of the oil purifying apparatus. In these figures, reference numeral 1 denotes a device main body having a substantially horizontally long rectangular shape. On one side of the device main body 1, a box-shaped oil tank 2 having an open upper surface and receiving oil to be purified is formed. A device storage space 3 which is almost completely closed is formed on the side. The apparatus body 1 can be freely moved by casters 29 attached to the lower, front, rear, left and right. In the oil tank 2,
A filtration processing case 5 having a box shape having substantially the same shape as that of the tank 2 and having a primary filter 4 for a primary filtration processing attached to a bottom portion is removably inserted and provided.

Reference numeral 6 denotes a secondary filtration tube provided through the top plate 7 of the equipment storage space 3 (FIG. 2) on the opposite side of the oil tank 2, and includes a cylindrical main body 6a and the top plate. A lid 6b attached to the upper end of a cylindrical main body 6a protruding from
b comprises a projection 6c protruding from the lower surface of the cylindrical body 6b and a net 6d laid on the bottom of the cylindrical main body 6a. A replaceable roll-shaped secondary filter 8 is detachably inserted into the cylindrical main body 6a. The lid 6b is provided, and the lid 6b is tightly fixed to the upper end of the cylindrical main body 6a by a clamp 9. A roll-shaped secondary filter 8 has a paper tube 8 penetrating vertically through its center.
The projection 6c is provided on the lower surface of the lid 6b to prevent oil from entering the paper tube 8a. When the lid 6b is fixed to the cylindrical main body 6a, the projection 6c is provided. Protrusion 6
The tip of c closes the upper end surface of the paper tube 8a to prevent oil from entering the paper tube 8a.

Reference numeral 10 denotes an oil guide pipe for guiding the oil, which has been subjected to the primary filtration by the primary filter 4 in the oil tank 2, to a secondary filtration cylinder 6. One end of the oil guide pipe 10 is provided on the bottom wall 2 a of the oil tank 2. The other end of the oil guide pipe 10 is connected to the device storage space 3 from the lower side of the oil tank 2.
It enters inside and is connected to the upper part of the secondary filtration tube 6. The oil guide pipe 10 is provided with a pump 12 for pressure-feeding the oil in the oil tank 2 to the secondary filtration processing cylinder 6 and passing the oil through the secondary filter 8 in the secondary filtration processing cylinder 6.
Reference numeral 13 denotes an oil feed pipe for sending out oil purified by being subjected to the secondary filtration processing in the secondary filtration processing cylinder 6, connected to a discharge port 14 at the bottom of the secondary filtration processing cylinder 6, and having a tip 13 a outside the apparatus main body 1. And project upward.

Reference numeral 15 denotes a bypass pipe branched from a required portion of the oil guide pipe 10 on the pump 12 discharge side and connected to the oil feed pipe 13.
The handle 17 of the switching valve 16 protrudes above the top plate 7 of the space 3 for accommodating equipment. Reference numeral 18 denotes a purifying oil discharged from the oil feed pipe 13 and an oil tank 22 of a fryer 21.
Of the purified oil supply pipe to be supplied to the
A flexible hose 19 detachably connected to the hose 19, a metal nozzle 20 connected to the hose 19 and bent into a mountain shape, and a base end portion of the nozzle 19 formed of a heat insulating material. And a cylindrical holding portion 34. A drain pipe 23 is provided at the tip of the oil feed pipe 13 in a branched manner.
If necessary, the cock 23a provided on the drain pipe 23 can be operated to drain the oil in the secondary filtration tube 6 to the outside.

In addition, in the apparatus main body 1, a concave portion is formed in a portion adjacent to the oil tank 2 so as to be concave in a side surface, and the height of the other top plate 7 is lower by one step for a reason to be described later.
4.

As shown in FIG. 2, a drain port 25 is provided at the bottom of the oil tank 22 of the fryer 21, and an opening / closing valve 26 is provided below the drain port 25.
The handle 6 is opened and closed by a handle 27 which rotates downward from the horizontal direction as shown. An oil heating burner 28 is provided below the oil tank 22. An electric heater is installed in the oil tank 22 in place of the burner 28, and the oil in the oil tank 22 is heated by a heat source of the electric heater. Some have done it.

By switching the switching valve 16 of the bypass pipe 15 with the handle 17, a cleaning circuit comprising the oil tank 22 of the fryer 21, the oil guide pipe 10, the bypass pipe 15, the oil feed pipe 13, and the purified oil supply pipe 18 is provided. Oil tank 22
Any one of a filtration processing circuit including an oil guide pipe 10, a secondary filtration processing cylinder 6, an oil feeding pipe 13, and a purified oil supply pipe 18 is selectively formed.

A handle 30 is attached to the opening of the filtration case 5 at the opposite corner, and when the primary filter 4 is to be cleaned alone, the handle 30 is pulled up from the oil tank 2 and the oil is removed. It is designed to be inserted into the tank 2. The primary filter 4 attached to the bottom in the filtering case 5 is made of a fine mesh of stainless steel wire, and can be used many times by cleaning.

As shown in FIG. 3, the secondary filter 8 inserted and disposed in the secondary filtration processing tube 6 is formed by winding a special filter paper in a roll shape around a cylindrical paper tube 8a whose upper and lower ends are closed. The secondary filter 8 is of a well-known structure that is formed. When the secondary filter 8 is used, the secondary filter 8 is inserted into the secondary filtration processing cylinder 6,
It is supported by the lower net 6d, and the lid 6b is put on the cylindrical main body 6a.
a, and then attached to a receiving seat 6e at the upper end of the cylindrical main body 6a via an O-ring 31, and the clamp arms 9a, 9a of the openable / closable clamp 9 are attached to the outer periphery of the receiving seat 6e and the lid 6b. And the closed ends of both clamp arms 9a, 9a are tightened with tightening bolts 9b to tightly fix the lid 6b to the cylindrical main body 6a, and the inside of the secondary filtration tube 6 is sealed. I do.

The oil from the oil guiding pipe 10 which has been subjected to the primary filtration is pressure-fed to the upper part of the secondary filtration tube 6 in which the roll-shaped secondary filter 8 is inserted in a sealed state. By passing the oil, impurities and water up to 1 micron contained in the oil can be removed. The roll-shaped filter 8 needs to be replaced as appropriate, but can be processed up to about 90 liters with one roll. The roll-shaped filter 8 has an oil temperature of about 18
High temperature processing up to 0 ° C. is possible.

Next, a method of using the oil purifying apparatus configured as described above will be described. In the oil purifying apparatus including the cleaning circuit and the filtering circuit as described above, first, the cleaning circuit is operated. When the fryer 21 is used to carry out the frying operation, the inside of the oil tank 22 of the fryer 21 is stuck with deposits such as oily residue, scorched residue or fried residue. In order to operate the cleaning circuit, first, the switching valve 16 is set so that the oil passes through the bypass pipe 15 from the pump discharge side of the oil guide pipe 10, that is, the handle 1 of the switching valve 16 is formed.
7 is switched to the position indicated by the virtual line in FIG.

First, as shown in FIG. 2, the present apparatus is moved and sunk below the oil tank 22 of the fryer 21 so that the oil tank 2 comes directly below the drain port 25 of the oil tank 22. At this time, the apparatus can be easily moved by the casters 29 provided on the apparatus main body 1. Then, the handle 27 of the on-off valve 26 is opened downward as shown in the figure, and the oil in the oil tank 22 is injected into the oil tank 2 from the drain port 25.

The space below the fryer 21 where the apparatus main body 1 can be sunk is small as shown in the figure, and the gap between the fryer 21 and the apparatus main body 1 is small. Therefore, when the handle 27 is turned downward as shown in the figure, In this case, the handle 27 collides with the top plate 7 of the apparatus main body 1 and the handle 27 cannot be rotated. Therefore, in this embodiment, the top plate 7a of the portion where the handle 27 rotates is provided.
Is formed in the recess 24 by making it concave, so that the rotation of the handle 27 is not hindered. This works extremely practically in field work.

When the power switch 32 is turned on after the handle 27 is turned downward in this manner, the pump 12 is operated, and the oil in the oil tank 2 is sucked by the pump 12 and And the oil guide pipe 1
From 0, the pressure is directly sent from the switching valve 17 through the bypass pipe 15 to the oil feed pipe 13 so that the oil in the oil tank 2 is
, The deposits such as fries are removed. .

The power switch 32 also serves as a timer, and the operation time is from turning the switch to the ON state until the rotary switch returns to the original OFF position, for example, 30 minutes. Is set to the maximum operating time. This means that while the operator is operating the device,
Often performing other work, forgetting that the device is running while doing other work, which prevents over-operating conditions from continuing, for example up to 30 minutes If it does, it will automatically shut down. As a result, a useless operation state can be prevented or an unexpected situation can be prevented from occurring, which is very useful in extremely busy on-site work.

The oil that has been subjected to the primary filtration by the primary filter 4 is sent from the oil guide pipe 10 through the oil feed pipe 13 to the purified oil supply pipe 18 connected to the oil feed pipe 13 under pressure. Then, the operator grips the gripping part 34 and removes the purified oil supply pipe 18.
The oil is ejected from the nozzle 20 toward the inner surface of the oil tank 22 to which the deposit adheres. The deposits adhering to the inner surface of the oil tank 22 are washed out and removed by the output power of the oil, and the oil in the oil tank 22 and the drain port 2 are removed.
5 is supplied to the oil tank 2 of the present apparatus. The oil charged into the oil tank 2 is subjected to a purifying process by the above-described filtering process by the primary filter 4 and purified, and then the high-pressure oil is again supplied from the nozzle 20 at the tip of the purified oil supply pipe 18. The cleaning liquid is jetted toward the inner surface of the oil tank 22 of the fryer 21. The purified oil supply pipe 18
Is handled, the hose 18 and the nozzle 20 are heated to a high temperature, so that the hose 18 and the nozzle 20 are gripped by the gripping portion 34 formed of a heat insulating material. As described above, the oil in the oil tank 22 is repeatedly circulated through the cleaning circuit formed between the oil tank 22 and the present apparatus, so that the deposits stuck to the inner surface of the oil tank 22 are removed by the primary filter 4. Will be.

In this case, the oil injected from the nozzle 20 has a high temperature of 100 ° C. or more, for example, about 150 ° C.
The cleaning effect is good and the inner surface of the oil tank 22 can be cleanly cleaned in a short time in combination with the pressure injection action. In addition, in this cleaning circuit, since oil does not pass through the secondary filtration processing cylinder 6,
Since the secondary filter 8 is not used, the life of the secondary filter 8 can be prolonged accordingly.

Further, in the cleaning circuit, the oil does not pass through the secondary filter 8 having a high pressure density as described above, so that the pressure loss due to the secondary filter 8 is reduced accordingly.
It is possible to eject oil toward the inner surface of the oil tank 22 with a high-pressure ejection power from the tip nozzle 20 of the purified oil supply pipe 18.

Further, in the present apparatus, a filtration processing case 5 having substantially the same shape as the tank 2 and provided with a primary filter 4 for primary filtration is provided in the oil tank 2 in a detachable manner. When the primary filter 4 is cleaned or replaced, the entire filter processing case 5 can be taken out of the oil tank 2, thereby facilitating cleaning and replacement work. In addition, since the primary filter 4 is made of a wire mesh, it can be easily cleaned, and is durable and can be used for a long time.

After confirming that the inner surface of the oil tank 22 has been cleaned as described above, the operation is switched to the filtration processing circuit.
In this case, all the oil in the oil tank 22 is charged into the oil tank 5, and after the entire amount of oil is charged into the tank 5, the handle 27 is operated to switch the on-off valve 26 to the closed state. Then, the switching valve 16 allows the oil to flow directly from the pump discharge side of the oil guide pipe 10 without passing through the bypass pipe 15.
To flow to, that is, to form a filtration circuit,
For example, the handle 17 is rotated to the position shown by the solid line in FIG.

By the operation of the pump 12, the oil in the oil tank 5 is subjected to the primary filtration by the primary filter 4.
Impurities that were pumped upward in the secondary filtration tube 6 by the oil guide tube 10 and that could not be removed by the primary filter 4 while passing through the secondary filter 8 from there, as well as fine impurities contained in the oil And the purified water is removed, and the oil is purified into clean oil. The purified oil is sent from the outlet 14 at the bottom of the secondary filtration treatment tube 6 to the oil feed pipe 13, and the tip side nozzle 20 of the purified oil supply pipe 18 connected to the oil feed pipe 13 is turned on. As shown in FIG. 2, by purging the oil into the oil tank 22 of the fryer 21, the purified oil is supplied into the oil tank 22. That is, the oil in the oil tank 22 passes through the filtration processing circuit formed between the oil tank 22 and the present apparatus, whereby all of the oil in the oil tank 22 is purified into pure oil without impurities. If the tip side nozzle 20 of the purified oil supply pipe 18 connected to the oil feed pipe 13 is made to protrude into the oil tank 22 as described above, dirty oil in the oil tank 22 is formed between the oil tank 22 and the present apparatus. Since the purification is automatically performed by circulating through the filtration circuit, the filtration process can be easily and easily performed without any trouble. Further, in this filtration processing circuit, circulation of the oil is performed only once, thereby sufficiently performing the filtering action.

As described above, in the present invention, the cleaning of the oil tank and the operation of purifying the oil in the oil tank can be performed at once by skillfully combining the above-described cleaning circuit and the filtration processing circuit. Useful. In FIG. 1,
35 is a pressure gauge, 36 is a safety fuse for shutting off power when an overload pressure is generated, 37 is a connection fitting for detachably connecting a power cord 38, and 39 is a power display for displaying a state where the power switch 32 is on. Reference numeral 40 denotes a power cord connection display lamp for displaying a state in which the power cord 38 is connected to the connection terminal 37.

[0031]

According to the first aspect of the present invention, there is provided an oil purifying apparatus having a movable apparatus main body, an oil tank, a primary filter for performing primary filtration of oil in the tank, a secondary filtration processing cylinder, and A roll-shaped secondary filter inserted into the cylinder,
An oil guide pipe that guides the oil subjected to the primary filtration to the secondary filtration cylinder,
It is equipped with an oil feed pipe that sends out the oil that has been subjected to the secondary filtration, and a pump that pumps the oil in the oil tank to the secondary filtration processing cylinder.If the oil to be purified is directly charged into the oil tank, After that, since it is automatically purified, it does not take much time, and by the two-stage filtration process of the primary filter and the secondary filter, in addition to frying, other fine particles such as odor and moisture contained in oil Some impurities can also be removed to make clean oil. In particular, since the secondary filter is a replaceable roll-shaped filter, the filter performance is not reduced by appropriately replacing this filter. Further, the present apparatus can be easily moved to the vicinity of an oil tank or the like in which oil to be treated is stored.

According to the oil purifying apparatus of the present invention, a bypass pipe is provided for connecting a pump discharge side of the oil guide pipe to the oil feed pipe, and a switching valve is provided at a branch of the bypass pipe from the oil guide pipe. Since the tip of the oil feed pipe is connected to the purified oil supply pipe, and either the cleaning circuit or the filtration circuit is selectively formed by switching the switching valve, the oil is repeatedly circulated by the cleaning circuit. As a result, the adhered matter stuck to the inner surface of the oil tank can be strongly washed off and removed, and at the same time, if a filtration processing circuit is selected, the dirty oil in the oil tank is automatically purified. That is, according to the present invention, the cleaning of the oil tank and the purification of the oil in the oil tank can be performed all at once by one device, and the work can be performed efficiently and inexpensively.

When the oil tank is cleaned by forming a cleaning circuit, the oil in the oil tank is directly sent from the oil guide pipe to the oil feed pipe via the bypass pipe only by the primary filtration.
The inner surface of the oil tank can be cleaned by the oil injected and supplied from the purified oil supply pipe connected to the oil supply pipe. In this cleaning circuit, the oil does not pass through the secondary filter, so that the life of the secondary filter can be prolonged accordingly.

Further, in the cleaning circuit, since the oil does not pass through the secondary filter having a high pressure density as described above, the pressure loss due to the secondary filter is small, and the pressure of the oil discharged from the tip nozzle of the purified oil supply pipe is increased. It is possible to spout oil toward the inside of the oil tank with force.

According to the third aspect of the present invention, the purified oil supply pipe is provided at the hose connected to the oil feed pipe, the nozzle connected to the hose tip, and the base end of the nozzle. And a heat-insulated gripping part, which makes it possible to easily supply the oil purified by the present device to a required supply point, and because of the heat-insulating gripping part, a purified oil supply pipe through which high-temperature oil passes. When the operation is performed by gripping the gripping portion during the operation of, there is no possibility of burning.

As described in claim 4, in the oil tank,
If the filter case with the same shape as this tank and the primary filter for the primary filter at the bottom is detachably installed, the primary filter can be cleaned or replaced when the oil tank is used together with the filter case. Can be easily removed from the printer, making cleaning and replacement easier.

As described in claim 5, by attaching the casters to the lower part of the apparatus main body, the present apparatus can be easily and easily moved to a required place, and the purification treatment can be performed at that place.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an oil purification device according to the present invention.

FIG. 2 is a longitudinal sectional view showing a use state of the oil purification device.

FIG. 3 is an exploded longitudinal sectional view showing a secondary filtration processing cylinder of the oil purification device and a secondary filter inserted and arranged in the cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Oil tank 4 Primary filter 5 Filtration processing case 6 Secondary filtration processing cylinder 8 Secondary filter 10 Oil guide pipe 12 Pump 13 Oil feed pipe 15 Bypass pipe 16 Switching valve 18 Purified oil supply pipe 19 Hose 20 Nozzle 21 Flyer 22 Oil tank

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 29/10 501C 510E 530B

Claims (5)

[Claims] An oil tank for receiving oil to be purified is provided in a movable apparatus main body, a primary filter for performing primary filtration of oil in the tank, a secondary filtration processing cylinder, and a secondary filtration processing cylinder. A secondary filter in the form of a replaceable roll inserted and installed in the filter, an oil guide pipe that guides the oil subjected to the primary filtration to the secondary filtration cylinder, and an oil purified by the secondary filtration in the secondary filtration cylinder. An oil purifying device comprising an oil feed pipe for sending out oil, and a pump provided in the middle of the oil guide pipe so as to pressurize oil in an oil tank to a secondary filtration processing cylinder. A bypass pipe branching from a pump discharge side of the oil guide pipe and connecting the oil guide pipe and the oil feed pipe, and a switching valve provided at a branch portion of the bypass pipe from the oil guide pipe; The end of the oil feed pipe is connected to the purified oil supply pipe, and the switching operation of the switching valve causes the oil tank-oil guide pipe-bypass pipe-
2. The cleaning circuit according to claim 1, wherein one of a cleaning circuit including an oil supply pipe and a supply pipe and a filtration processing circuit including an oil tank, an oil guide pipe, a secondary filtration processing cylinder, an oil supply pipe, and a supply pipe is selectively formed. Oil purification equipment. 3. The purified oil supply pipe includes a hose connected to the oil feed pipe, a nozzle connected to a distal end of the hose, and a heat-insulating grip provided at a base end of the nozzle. The oil purification device according to claim 1. 4. A filter processing case having a filter having a primary filter for primary filtration and having a substantially same shape as that of the tank and having a primary filter for primary filtration disposed in an oil tank.
The oil purification device according to any one of the above. 5. The oil purification device according to claim 1, wherein a caster is attached to a lower portion of the device main body.