JPH0975237A - Oil filter for fryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oil filter for fryer, where used oil discharged from a frying tank is filtered by the filter to efficiently recover it, the oil is prevented from overflowing even when frying residue accumulates in the filter, and the filter can easily be replaced. SOLUTION: When oil that is stored in a waste oil tank 10 after filtered is circulated to a frying tank by a motor-driven pump, a bottom plate 27 of a filter cover 16 in a filter section is located above the oil level to keep a filter from being immersed in oil. In addition, a specified gap is maintained throughout between the inner circumferential face of the waste oil tank 10 and the outer circumferential face of the filter cover 16 with the filler cover 16 set on the waste oil tank 10 by hooks 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device applied to a fryer for frying various foods in a frying tank to cook the fried food, and more particularly to a used oil discarded from the frying tank through a filtering section. After filtering, when collecting the filtered oil from the waste oil tank via the pump motor, it is possible to reduce the load on the pump motor and collect the oil efficiently. It is possible to reliably prevent the oil from flowing out of the waste oil tank even when accumulated, and at the same time, the filter (filter paper) can be fixed to the filter section with a simple structure to replace the filter. The present invention relates to a fryer oil filtration device that can easily perform the above.

[0002]

2. Description of the Related Art Conventionally, when cooking fried food in a restaurant or the like, a large fryer is used to quickly cook a large amount of fried food according to a customer's order. In cooking such fried foods, deterioration of cooking oil is directly linked to deterioration of quality of fried food, while it is extremely uneconomical to immediately dispose of cooking oil. It is common practice to attach an oil filter to the flyer to make it usable.

Various types of devices have been proposed for the oil filtration device attached to the flyer as described above. For example, Japanese Patent Laid-Open No. 5-317192 discloses a waste oil valve from a tank portion (fry tank) of a flyer. An oil tank for storing the oil wasted through is disposed below the tank section, and a paper filter is arranged on the bottom net provided on the bottom surface of the oil tank, and a filter composed of a punch metal plate. An oil filtration device is described in which a paper filter can be fixed from the upper surface via a holding frame, and the paper filter can be attached and detached by cooperation of a fixing portion and a handle (attached to the filter holding frame). There is.
In this oil filtration device, the oil before filtration is stored in an oil tank before filtration formed above the paper filter in the oil tank, and when the filtration is started by driving the oil pump, the oil is a punch panel plate, The oil is sequentially filtered through a paper filter, and the filtered oil is sent from the filtered oil tank and the filtered sub oil tank to the oil pump through the oil suction pipe and then returned to the tank section.

[0004]

However, in the oil filtration device described in the above-mentioned Japanese Patent Laid-Open No. 5-317192, the punch metal plate, the paper filter and the bottom net of the filter holding frame which constitutes the filtering material are made of oil. Since it is disposed on the bottom surface of the tank, it is immersed in oil in the oil tank, and the suction port of the oil suction pipe is located near the paper filter. In such a case, when the oil pump is operated to filter the oil, the suction force of the oil pump directly acts on the paper filter, and as a result, the fried residue existing in the oil adheres to the paper filter. There is a possibility that the filtration efficiency of oil will decrease.

Further, in the oil filter device, the paper filter is fixed by a fixing portion provided on the bottom surface of the oil tank corresponding to the side edge of the paper filter and the filter holding frame, and through the handle of the filter holding frame. Although it is detachable, in such a configuration, it is necessary to operate the handle to attach and detach the filter holding frame both when the paper filter is attached to and removed from the oil tank. The work of exchanging is still complicated.

The present invention has been made in order to solve the above-mentioned conventional problems. After the used oil wasted from the frying tank is filtered through the filter section, the filtered oil is pumped from the waste oil tank. When collecting oil through the motor, the load on the pump motor can be reduced and oil can be collected efficiently, and even if fried residue is accumulated in the filtration unit, the oil will flow out of the waste oil tank. It is an object of the present invention to provide an oil filter device for a fryer, which can reliably prevent the above-mentioned problem and can easily fix the filter to the filter portion with a simple structure to easily replace the filter. .

[0007]

In order to achieve the above object, an oil filtering device for a fryer according to claim 1 is a waste oil tank in which used oil is wasted from a frying tank of a fryer for frying various food materials, and the waste oil thereof. In a fryer oil filtration device having a filtration unit disposed in a tank, the filtration unit is
It is arranged above the oil level of the waste oil stored in the waste oil tank.

In the fryer oil filtering device according to the first aspect, since the filtering portion is arranged above the oil level of the waste oil stored in the waste oil tank, the used oil waste oil from the frying tank is filtered. After filtering through the filter motor, when collecting the filtered oil from the waste oil tank through the pump motor, there is no possibility that the suction force of the pump motor will directly act on the filter.
Therefore, it is possible to reduce the load on the pump motor and efficiently collect the oil. Further, the fryer oil filtering device according to claim 2 is the filtering device according to claim 1, wherein a predetermined gap is formed between the periphery of the filtering portion and the inner wall surface of the waste oil tank. Have a configuration.

In the oil filter device for a fryer according to the second aspect of the present invention, even when fried refuse is accumulated in the filter portion while the oil is being filtered through the filter portion by operating the pump motor, the oil is removed. It will be dropped and collected into the waste oil tank through the gap formed between the periphery of the filtration section and the inner wall surface of the waste oil tank, and therefore it is possible to reliably prevent the oil from flowing out of the waste oil tank. Becomes

Furthermore, an oil filter device for a fryer according to a third aspect is the filter device according to the first or second aspect, wherein the filter portion has a bottom wall having a large number of oil permeation holes formed therein. Together with the filter cover hooked on the upper edge of the waste oil tank, a filter mesh hooked on the filter cover, and a filter interposed between the filter cover and the filter mesh, the filter of the filter cover It has a structure fixed through the bottom wall and the bottom surface of the mesh.

In the oil filter device for a fryer according to claim 3, since the filter is fixed through the bottom wall of the filter cover and the bottom surface of the screen, the filter is set on the bottom wall of the filter cover and then on the top surface of the filter. It is possible to fix the filter to the filtration part simply by placing a mesh screen,
As described above, the filter can be fixed to the filter unit with a simple structure, and the filter can be easily replaced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An oil filter device for a fryer according to the present invention will be described in detail below with reference to the drawings based on an embodiment embodying the present invention. First, the schematic configuration of the flyer will be described with reference to FIG. FIG. 1 is an explanatory view schematically showing a state in which a filtering device is set on a flyer.

In FIG. 1, a fryer 3 for frying various foodstuffs with oil 2 to cook the fried food is provided above the fryer 1, and a heater for heating the oil 2 is provided in the fryer 3. 4 are provided. A waste oil pipe 5 hangs down from the bottom of the frying tank 3, and a waste oil valve 6 is arranged at a substantially central position of the waste oil pipe 5. The waste oil valve 6 is opened and closed via a valve lever 7.

Below the fryer 3, a front panel 1A (left panel in FIG. 1) and a rear panel 1B are provided below the flyer 1, and the front panel 1A is also provided.
An opening / closing door 1C is attached to. The opening / closing door 1C is opened when operating the valve lever 7 and when operating the control box 21 (described later). A space S is formed between the front panel 1A and the rear panel 1B for the oil filter device 8 to enter and leave.
In the space S, as shown in FIG. 1, the oil filtering device 8 is arranged. Here, the oil filter 8 is shown in FIGS.
This will be described with reference to FIG. 2 is an explanatory view schematically showing the oil filtration device 8 in an enlarged manner.

1 and 2, the oil filtering device 8 has a base plate 9, and a waste oil tank 10 is provided on the upper surface of the base plate 9.
Is fixed via a fixture 11, and the pump motor 12 is fixed via a fixture 13. On the lower surface of the base plate 9, four casters 14 (see FIGS. 1 and 2) are provided so that the oil filtering device 8 can be detachably moved in the space S.
Two casters 14 are shown therein).

The waste oil tank 10 has a capacity capable of storing at least the same amount of oil 2 as the amount of the oil 2 filled in the frying tank 3, and a filtering section 15 is provided above the oil level L of the oil 2. It is arranged. The filtering unit 15 includes the filter cover 16 and the filter cover 16 that are hooked on the upper edge of the waste oil tank 10.
A filter 17 (filter paper) arranged on the bottom wall of the filter cover 16 and a filter mesh 18 that is hooked on the upper edge of the filter cover 16 and fixes the filter 17 between its bottom surface and the bottom wall of the filter cover 16. ing. The detailed configuration of each filter cover 16, the filter 17, and the strainer net 18 of the filter unit 15 and the configuration of fixing the filter 17 by the bottom wall of the filter cover 16 and the bottom face of the strainer net 18 will be described later.

Further, one end of an oil suction pipe 19 is communicated with the bottom surface of the waste oil tank 10, and the other end of the suction pipe 19 is connected to the pump motor 12. Further, one end of an oil return hose 20 is connected to the pump motor 12, and the other end of the oil return hose 20 is guided to the frying tank 3. Therefore, when the pump motor 12 is operated, the oil 2 stored in the waste oil tank 10 after the frying dregs or the like is filtered by the filtering unit 15 is the oil suction pipe 1
9. The oil is circulated from the pump motor 12 to the frying tank 3 via the oil return hose 20.

Further, the front side of the waste oil tank 10 (in FIG. 1,
A control box 21 is arranged on the left side. The control box 21 is provided with an operation switch 22 for turning on / off the pump motor 12, and the operation switch 22 is operated with the opening / closing door 1C attached to the front panel 1A being opened. .

Next, the detailed structure of the filtering unit 15 will be described with reference to FIG. FIG. 3 is an exploded perspective view schematically showing the filter unit 15 in a disassembled state. In FIG. 3, the waste oil tank 10 has a rectangular parallelepiped shape in which a concave portion 23 is formed in the front portion (the left portion in FIG. 3), and the pair of side walls 24 on the long side thereof has cutouts. The part 25 is formed. Here, the length of each side wall 24 on the long side is set to A, and the length of each notch 25 is set to B shorter than the length A of the long side 24. The width of each side wall 26 on the short side of the waste oil tank 10 is set to C.

The filter cover 16 is formed by integrally forming a rectangular bottom wall 27, a pair of side walls 28 on the short side and a pair of side walls 29 on the long side which are erected from the four circumferences of the bottom wall 27. It has a rectangular parallelepiped shape. The bottom wall 27 is formed of a punching plate in which a large number of oil permeation holes 30 are formed. Further, a pair of hook-shaped hooking portions 31 are provided at both ends of each side wall 29 on the long side, and each side wall 2
The length of 9 is set to E. Further, the width of each side wall 28 on the short side is set to D, and the width between the hanging parts of each hook 31 is set to C wider than D in the short side direction.

Each of the hooking portions 31 has its both ends in the long side direction abutted on the vertical portion of each notch 25 of the waste oil tank 10, and the inner wall surface of the hanging portion of the hooking portion 31 of the waste oil tank 10. The filter cover 16 is attached to the waste oil tank 10 by being hooked in each notch 25 so as to come into contact with the outer wall surface of each side wall 24.

At this time, the length A of each side wall 24 of the waste oil tank 10 is determined by the length of each side wall 2 of the filter cover 16.
The length E of the waste oil tank 10 is larger than the length E of the filter cover 16.
A gap of (AE) / 2 is formed between and. Further, the width C of each side wall 26 in the waste oil tank 10 is the same as the width C between the hanging parts of each hanging portion 31, as described above, and the width D of each side wall 28 of the filter cover 16 is:
It is made smaller than the width C, and therefore the waste oil tank 10
A gap of (C−D) / 2 is formed between each side wall 24 and each side wall 29 of the filter cover 16. As a result, as shown in FIG. 4, between the inner peripheral surface of the waste oil tank 10 and the outer peripheral surface of the filter cover 16 in a state in which the filter cover 16 is locked to the waste oil tank 10 via the respective hooks 31. In addition, a predetermined gap is formed over the entire circumference.

The filter cover 1 constructed as described above
The filter 17 is arranged on the bottom wall 27 of 6. The filter 17 is a filter paper that is commercially available and has general versatility.
It acts to remove impurities such as minute frying dregs contained in the oil 2 wasted from the frying tank 3 via the wasted oil pipe 5.

Further, a strainer net 18 is hooked in the filter cover 16. The strainer net 18 is made of a metal material such as SUS in a mesh shape, and has a function of removing a relatively large fried refuse or the like contained in the oil 2.
A handle 32 is provided on each long side of the strainer net 18, and each handle 32 has a pair of hook portions 3 formed at both ends of each side wall 29 of the filter cover 16.
Between 1 and 1, it is hooked on the upper edge of each side wall 29. Each handle 3
In a state in which 2 is hooked on the upper edge of each side wall 29 and the strain net 18 is attached to the filter cover 16, the bottom face 18A of the strain net 18 presses the filter 17 from above, whereby the filter 17 is , Filter cover 16
The bottom wall 27 and the bottom surface 18A of the strainer 18 are fixed in an appropriate state.

Then, the filtering unit 1 is provided on the upper portion of the waste oil tank 10.
In order to provide No. 5, first, each hook 31 of the filter cover 16 is hooked in the notch 25, and then the filter cover 16
The filter 17 is set on the bottom wall 27 of the. Further, each handle 32 of the strainer net 18 is connected to each hook 3 of the filter cover 16.
Hang in between 1. As a result, the filter unit 15 including the filter cover 16, the filter 17, and the strainer net 18 is provided above the waste oil tank 10.

Next, the filtering device 8 constructed as described above.
The filtering operation will be described. The filtration of the oil 2 by the filtration tank 8 is performed when it is necessary to reuse the oil 2 when the fried food is cooked in the frying tank 3 of the fryer 1 and the oil 2 deteriorates. In such a case, first, the opening / closing door 1C of the front panel 1A of the flyer 1 is opened, and the waste oil valve 6 is opened via the valve lever 7. As a result, the oil 2 filled in the frying tank 3 flows down from the waste oil pipe 5 onto the filtering portion 15 of the filtering device 8.

The oil 2 thus flowed down on the filter section 15
First passes through the screen 18. At this time, a relatively large fried refuse contained in the oil 2 is removed through the strainer net 18. The fried dregs and the like removed from the oil 2 are accumulated on the strainer net 18. Next, the oil 2 that has passed through the strainer net 18 is filtered by the filter 17. When the oil 2 is filtered by the filter 17, impurities such as minute fried dregs contained in the oil 2 which are not removed by the filtering net 18 are filtered through the filter 17. in this way,
When the oil 2 has passed through the strainer 18 and the filter 17, most of the frying residue and the like in the oil 2 have been removed, and the oil 2 is in a reusable state.

The oil 2 that has passed through the filter 17 flows down from the oil permeation holes 30 of the bottom wall 27 of the filter cover 16, whereby the oil 2 is sequentially stored in the waste oil tank 10. The oil 2 in the frying tank 3 is the waste oil tank 10
When it is stored in the waste oil tank 1 as described above.
Since 0 can store the oil 2 of the same amount or more as the capacity of the frying tank 3, the lower surface of the filter tank 16 is located above the oil surface L of the oil 2 in the waste oil tank 10.

Thereafter, with the opening / closing door 1C open, the operation switch 22 of the control box 21 is operated to turn on the pump motor 12 to start its operation. When the operation of the pump motor 12 is started, the oil 2 in the waste oil tank 10 is circulated from the oil suction pipe 19, the pump motor 12 through the oil return hose 20 to the frying tank 3. At this time, the bottom wall 27 of the filter cover 16 in the filtering unit 15 is not exposed to the oil level L.
Since the filter 17 located above the filter 2 is not immersed in the oil 2, the suction force of the pump motor 12 is
There is no direct action on the oil pump 7, so that the load on the pump motor 12 can be reduced and the oil 2 can be efficiently circulated to the frying tank 3.

Further, when the above-mentioned filtering operation of the oil 2 is repeated a number of times, the frying dregs are gradually accumulated in the strainer net 18, and the oil 2 can pass to the bottom surface 18A of the strainer net 18. Oil 2 from the frying tank 3
Will flow along the surface of the accumulated fried debris. In such a case, in the filter part 15 of the present embodiment, the filter cover 16 is provided with the waste oil tank 10 via the hooking parts 31.
As shown in FIG. 4, a predetermined gap is formed between the inner peripheral surface of the waste oil tank 10 and the outer peripheral surface of the filter cover 16 in the state of being locked in the The oil 2 flowing along the surface of the accumulated fried residue is
After passing through the gap, the waste oil is reliably stored in the waste oil tank 10. This makes it possible to reliably prevent the oil 2 from flowing out of the waste oil tank 10. Therefore, it is possible to easily clean the space S of the flyer 1 in which the filtering device 8 is housed and prevent the floor on which the flyer 1 is installed from being soiled.

Further, when the filtering function of the filter 17 is deteriorated, when the filter 17 is replaced, the filter 17 is fixed via the bottom wall 27 of the filter cover 16 and the bottom surface 18A of the strainer net 18. After setting the filter 17 on the bottom wall 27 of the filter cover 16, it is possible to easily fix the filter 17 to the filter portion 15 only by mounting the strainer net 18 on the upper surface of the filter 17. As a result, the filter 17 can be fixed to the filter section 15 with a simple structure, and the filter 17 can be easily replaced.

As described above in detail, in the oil filtering device 8 of this embodiment, when the filtered oil 2 stored in the waste oil tank 10 is circulated to the frying tank 3 via the pump motor 12, the filtering section is used. Since the bottom wall 27 of the filter cover 16 at 15 is located above the oil level L so that the filter 17 is not immersed in the oil 2, the suction force of the pump motor 12 acts directly on the filter 17. Can be reliably prevented. Therefore, the load on the pump motor 12 can be reduced and the oil 2 can be efficiently circulated to the frying tank 3.

Further, based on the fact that the filtering operation of the oil 2 is repeated many times, the frying dregs are accumulated in the straining net 18 and the oil 2 cannot pass to the bottom surface 18A of the straining net 18. Due to the above, even when the oil 2 from the frying tank 3 comes to flow along the surface of the accumulated frying dregs, in the filtering unit 15 of the present embodiment,
In a state where the filter cover 16 is locked to the waste oil tank 10 via the hooks 31, a predetermined distance is provided between the inner surface of the waste oil tank 10 and the outer surface of the filter cover 16 over the entire circumference. Since the gap is formed, the oil 2 flowing along the surface of the accumulated frying dregs can be surely stored in the waste oil tank 10 while flowing down through the gap. As a result, it is possible to reliably prevent the oil 2 from flowing out of the waste oil tank 10, and thus it is possible to easily clean the space S of the flyer 1 in which the filtering device 8 is housed, and at the same time, to flyer 1 It is possible to prevent the floor on which is installed from being soiled.

Further, when the filtering function of the filter 17 is deteriorated, when the filter 17 is replaced, the filter 17 is fixed via the bottom wall 27 of the filter cover 16 and the bottom surface 18A of the screen 18. Since the filter 17 is configured, the filter 17 can be easily fixed to the filter portion 15 only by setting the filter 17 on the bottom wall 27 of the filter cover 16 and then placing the strainer net 18 on the upper surface of the filter 17. Thus, the filter 17 can be fixed to the filter portion 15 with a simple structure, and the filter 17 can be easily replaced.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various improvements and modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the bottom wall 27 of the filter cover 16 is formed of the punching plate provided with the oil passage hole 30 having a circular hole shape, but the oil passage hole 30 is not limited to the circular hole shape, and, for example, Any material having a long hole shape, a square hole shape, or various other lattice shapes can be used.

[0036]

As described above, according to the present invention, after the used oil which has been waste oil from the frying tank is filtered through the filtering section,
When collecting the filtered oil from the waste oil tank through the pump motor, the load on the pump motor can be reduced and the oil can be efficiently collected. Oil can be surely prevented from flowing out of the waste oil tank, and the filter can be fixed to the filter unit with a simple structure, and the filter can be easily replaced, etc. A device can be provided.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a state in which an oil filtering device is set on a flyer.

FIG. 2 is an explanatory diagram schematically showing an enlarged oil filtration device.

FIG. 3 is an exploded perspective view schematically showing the filter unit in a disassembled state.

FIG. 4 is a plan view of a filter unit schematically showing the screen except for a screen.

[Explanation of symbols]

1 ... Fryer, 2 ... Oil, 3 ... Frying tank, 5
... Waste oil pipe, 6 ... Waste oil valve, 8 ... Oil filtration device, 9 ... Base plate, 10 ... Waste oil tank, 1
2 ... Pump motor, 15 ... Filtering section, 16 ...
Filter cover, 17 ... Filter, 18 ... Filter mesh, 18A ... Bottom of filter mesh, 19 ... Oil suction pipe, 20 ... Oil return hose, 21 ... Control box, 24, 26 ... Side wall of waste oil tank, 25 ... Notch portion, 27 ... Bottom wall of filter cover, 28, 29 ...
..Side wall of filter cover, 30 ... Oil permeation hole, 31
... Latching part, 32 ... Handle

Claims (3)

[Claims] 1. A fryer oil filtering device comprising: a waste oil tank in which used oil is wasted from a frying tank of a fryer for frying various foodstuffs; and a filtering section disposed in the waste oil tank. An oil filtering device for a fryer, which is arranged above an oil level of waste oil stored in a waste oil tank. 2. The oil filter device for a fryer according to claim 1, wherein a predetermined gap is formed between the periphery of the filtering portion and the inner wall surface of the waste oil tank. 3. The filter section has a bottom wall having a large number of oil permeation holes formed therein, and a filter cover hooked on an upper edge of the waste oil tank, and a mesh screen hooked on the filter cover. The filter comprises a filter inserted between the filter cover and the mesh, and the filter is fixed via the bottom wall of the filter cover and the bottom of the mesh. The oil filter device for a flyer described.