JP2002010924A - Fryer and filter device used for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fryer which can not only merely filter oil to get rid of frying scum but can maintain the freshness of the oil for a long period as well and allows the cleaning in an oil tank. SOLUTION: The fryer 1 for frying and cooking food materials by a batch process within the oil tank 6 is provided with a circulating path having a storage tank 10 for storing the oil in the oil tank 6 and filter devices 11, 12 and 30 for filtering the oil. An electric field is formed in at least part of the circulating path.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fryer for performing deep-fried cooking which can maintain the freshness of oil used for frying for a long period of time, and a filtration device used for the fryer.

[0002]

2. Description of the Related Art Conventionally, in a fryer that fries and cooks ingredients in a batch process, an electric field is formed in an oil tank that cooks fried food to maintain the freshness of oil for a long time. On the other hand, in a large fryer or the like, a filtering device is provided in the fryer, or a filtering device is separately provided to filter the fried scum contained in the oil and use the oil.

[0003]

However, the fry residue contained in the oil cannot be removed simply by forming an electric field in the oil tank of the fryer. On the other hand, simply filtering the fried slag contained in the oil with the filtration device cannot extend the life of the oil.

Accordingly, the present invention provides a fryer which can maintain the freshness of oil for a long period of time and can filter fried scum contained in oil.

[0005]

According to the first aspect of the present invention, in a fryer that fries and cooks ingredients in an oil tank by batch processing, the fryer includes a storage tank for storing oil discharged from the oil tank and an oil. The above problem is solved by a fryer having a circulation path having a filtration device for filtering, and an electric field formed in at least a part of the circulation path.

According to the present invention, for small and medium-sized fryers that fry and cook foodstuffs in a batch process, the oil is activated by the action of an electric field to maintain the freshness of the oil used for a long period of time, and the fried scum contained in the oil Can be filtered. Further, since the oil discharged from the oil tank circulates in the circulation path and returns to the oil tank again, there is no need to manually return the discharged oil to the oil tank.

According to a second aspect of the present invention, in the fryer according to the first aspect, the electrodes are respectively provided in the oil tank and the storage tank, and a voltage applied to the electrodes of the oil tank is applied to the electrodes of the storage tank. The voltage is set lower than the threshold voltage.

According to the present invention, the action of the electric field can be effectively provided by forming the electric field in both the oil tank and the storage tank in which the oil is stored most in the circulation path. By setting the voltage applied to the electrodes of the oil tank lower than the voltage applied to the electrodes of the storage tank, cooking can be performed while safely forming an electric field.

According to a third aspect of the present invention, in the fryer according to the first aspect, an electrode connected to a voltage generator is disposed in the oil tank, and the electrode is made of a plate having a plurality of holes formed therein. It is characterized by being supported in the oil tank via an insulating member.

[0010] According to the present invention, the electrode can be used as a wire mesh for preventing food from falling, and it is not necessary to provide a wire mesh separately from the electrode, and a wide space can be formed in the oil tank.

According to a fourth aspect of the present invention, in the fryer according to the third aspect, the wiring supported by the wall of the oil tank via an insulating piece and connecting the electrode and the voltage generating device is formed by the insulating piece and the oil tank. It is characterized by being provided through the wall surface.

According to the present invention, the electrodes can be arranged without protruding the wires connecting the electrodes and the voltage generating device to the outside of the fryer, so that a person can work safely without touching the wires. . It can also be a simple flyer.

According to a fifth aspect of the present invention, in the fryer according to the third aspect, a film of a far-infrared radiator is formed on a surface of the electrode.

In the present invention, the freshness of the oil used is maintained over a long period of time by the action of both the electric field and the far-infrared radiator.

According to a sixth aspect of the present invention, in the fryer according to the first aspect, the circulation path is provided with a far-infrared radiator at least in a part thereof.

According to the present invention, the far-infrared radiator activates the oil in the circulation path, and the oil can be kept fresh for a long period of time.

According to a seventh aspect of the present invention, in the fryer according to the first aspect, a detecting means for detecting an oil amount in the oil tank, and an oil for adjusting the oil amount in the oil tank according to an output signal of the detecting means. A quantity adjusting means is provided in the circulation path.

According to the present invention, when the amount of oil stored in the oil tank becomes smaller than a predetermined amount, the control unit judges that the output signal from the detecting means is insufficient, and for example, the oil discharged from the oil tank by squeezing a valve. The oil amount in the oil tank is adjusted by decreasing the amount and increasing the amount of oil discharged from the pump in the circulation path.
Conversely, if the oil in the oil tank exceeds a predetermined amount, the control unit determines that the output signal from the detecting means is excessive, and opens the valve to increase the amount of oil discharged from the oil tank and discharge the oil from the pump. Reduce the amount of oil in the tank and adjust the amount of oil in the oil tank. Therefore, the amount of oil stored in the oil tank can be kept constant.

In the fryer according to the eighth aspect, in the fryer according to the first aspect, the filtering device is provided in a storage tank for temporarily storing oil discharged from the oil tank, and the filtering device is discharged from the oil tank. It is characterized by comprising a first filtration unit for filtering large fried slag contained in oil, and a second filtration unit for filtering smaller fried scum contained in the oil filtered by the first filtration unit.

According to the present invention, since the residue contained in the oil is filtered step by step from the largest, the oil discharged from the oil tank is efficiently filtered without the filter of the filtering device being clogged.

According to a ninth aspect of the present invention, in the fryer according to the eighth aspect, the filtering device is further provided with a filtering unit for filtering fine fried scum downstream thereof.

According to the present invention, fine fried slag contained in oil can be removed.

According to a tenth aspect of the present invention, in the fryer according to the ninth aspect, the fryer has a preliminary circulation path through which the oil discharged from the oil tank passes directly through the filtration unit and returns the oil to the oil tank as it is. It is provided separately and is characterized in that the flow of oil can be switched between the circulation path and the preliminary circulation path by a direction switching valve of the circulation path.

According to the present invention, when the fryer is ignited during cooking, the oil in the oil tank is circulated through the preliminary circulation path so that the oil in the oil tank is always filled to a certain amount or more, thereby preventing the empty firing. While activating the filtration unit, the oil in the filtration unit can be activated. Further, at the time of cleaning, the oil can be circulated through the circulation path passing through the storage tank, the fried scum contained in the oil can be filtered by the filtration device, and the oil tank can be cleaned with the filtered clean oil.

According to an eleventh aspect of the present invention, in the fryer according to the ninth aspect, the filtering unit includes a filter portion for filtering fine fried scum and a far-infrared radiator through which the oil filtered by the filter portion passes. And a case portion accommodated therein.

According to the present invention, far-infrared radiators activate the oil every time the oil passes through the filtration unit, and not only remove the fine frying residue contained in the oil, but also increase the freshness of the oil for a long time. Can be kept for a long time.

According to a twelfth aspect of the present invention, in the fryer according to the eleventh aspect, the filter unit is detachable from the filtration unit.

According to the present invention, even if fried scum accumulates in the filter portion, the filter portion can be easily washed.

According to a thirteenth aspect of the present invention, in the fryer according to the first aspect, the circulation path includes an injection path for injecting the oil filtered by the filtration device into the oil tank, and a cleaning path for cleaning the inside of the oil tank. And a switching valve capable of guiding circulating oil to at least one of the injection path and the cleaning path.

According to the present invention, in normal use, the switching valve is switched to the injection path side, and when fryer is accumulated in the electrode or the heat pipe of the oil tank using the fryer for a certain period of time, the fryer is switched after using the fryer. By switching the valve to the cleaning path side, the inside of the oil tank can be cleaned.

According to a fourteenth aspect of the present invention, in the fryer according to the thirteenth aspect, the cleaning path includes a hose extending to the outside of the fryer, and an injection nozzle attached to the hose. .

According to the present invention, since the injection nozzle can be freely moved to a position to be cleaned while holding the injection nozzle by hand, cleaning of the oil tank can be extremely facilitated.

[0033] In the fifteenth aspect of the present invention, there is provided a filtration device which is installed in close proximity to a fryer which fries and cooks ingredients in an oil tank, and filters oil used in the fryer. A filtration unit for filtering, a tank unit for storing the oil filtered by the filtration unit, oil supply means for supplying the oil stored in the tank unit to the oil tank again, and a voltage generator for forming an electric field The above-mentioned problem is solved by a filtration device provided with.

According to the present invention, for a normal fryer that has already been delivered to the customer, the present filtration device can be set in this fryer instead of the existing storage tank, and the oil connecting the filtration device to the fryer can be set. An electric field can be created anywhere in the path to filter and reform the oil.

According to a sixteenth aspect of the present invention, in the filtering device according to the fifteenth aspect, an electrode arranged at least in either the tank portion or the oil tank is connected to the voltage generating device. And

According to the present invention, the action of the electric field can be effectively given by forming an electric field in one or both of the oil tank and the storage tank in which the oil is stored most in the circulation path. . If the voltage applied to the electrode of the oil tank is set lower than the voltage applied to the electrode of the storage tank, the cooking operation can be performed while safely forming an electric field.

According to a seventeenth aspect of the present invention, in the filtering device according to the fifteenth or sixteenth aspect, the filtering device has a further filtering portion for filtering fine fried scum downstream of the tank portion. It is characterized by. ADVANTAGE OF THE INVENTION According to this invention, the fine fried scum which cannot be removed by the filtration part which filters the oil discharged | emitted from an oil tank can also be filtered.

[0038]

Embodiments of the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 shows the appearance of a fryer 1 according to one embodiment of the present invention. The fryer 1 is a gas-heated fryer, and has a box-shaped fryer casing 1a which forms the outer shell of the fryer. The casing 1a is provided with side portions 2 provided on both sides of the fryer 1 so as to face each other. , 2, a front portion 4 having an operation panel 4 a for operating the fryer 1, and a rear portion protruding upward from the upper ends of the side portions 2, 2 and the front portion 4 at the rear of the fryer 1. And 5. The fryer 1 is supported by legs 3, 3 formed integrally with the side surfaces 2, 2, and has a spherical shape at the lower end of the legs 3, 3 for moving the fryer 1. Casters-3a ‥ 3a are attached to the front part and the rear part, respectively. An L-shaped lever protruding above the operation panel 4a in the front part 4 is an opening / closing lever 15a for opening / closing an on / off valve attached to a lower part in an oil tank described later. The provided protrusion is an exhaust pipe 5A for discharging exhaust gas generated when the inside of the oil tank is heated.

The upper part of the fryer 1 is surrounded by the front part 4, the side parts 2, 2 and the back part 5, and the rectangular concave part is an oil tank 6 for frying and cooking foods. Filled with oil, various ingredients such as potatoes and chicken are fried and cooked in a batch process. In the oil tank 6, a plate-like electrode 7 for forming an electric field in the oil tank, which will be described in detail later, is disposed in an insulated state in the oil tank.

An oil tank 6 is provided on the side surface 2 of the fryer 1.
Is provided with a nozzle gun 8 for jetting the ink. The nozzle gun 8 forms a part of a cleaning path, which is one path of a circulation path for circulating oil in an oil tank, and is formed like a pistol in appearance. It is provided at the tip of a hose 8b made of a heat-resistant material such as Teflon (registered trademark). An opening / closing valve is built in the nozzle gun 8, and oil is ejected from the nozzle gun 8 by lever opening / closing operation. The nozzle gun 8 is held on the side surface 2 of the fryer 1 so as to be hooked on a hook 2a provided on the side surface 2 when not in use.

A box-shaped storage tank 10 for temporarily storing the oil discharged from the oil tank 6 is provided between the legs 3. A rectangular cylindrical filtration unit 30 is provided on a side surface of the storage tank 10.
The pipe extending from the side of the tank 10 and the pipe extending to the lower part of the oil tank of the fryer are connected.

FIG. 2 shows the heating mechanism 9 of the fryer.

The oil tank bottom surface 6a is formed in a funnel shape having a tapered central portion, and a discharge pipe 13 is provided at the lower end thereof. An opening / closing valve 15 attached to the tip of the opening / closing lever 15a is provided in the discharge pipe 13 to store and discharge oil in the oil tank 6. The heating mechanism heats the oil in the oil tank, and includes a combustion chamber 9a equipped with a gas burner 9b as a heat source, and a heating pipe 9c communicating with the combustion chamber 9a and passing through the oil tank 6 horizontally. And the combustion chamber 9
By passing the air g heated by the gas burner 11a in the heating pipe 9a into the heating pipe 9c, the oil W in the oil tank is heated via the heating pipe 9c. The heated air g is discharged to the outside from an exhaust pipe 5A provided at the rear end of the upper end of the back surface part 5. At the time of cooking, after filling the oil tank with a predetermined amount of the pumped oil W, the gas burner is ignited in the combustion chamber 9a of the heating mechanism to start burning the fuel. As a result, the air g heated by the combustion passes through the heating pipe 9c, so that the oil W in the oil tank 6 is heated from the surface of the heating pipe 9c.

In the present invention, the inner peripheral surface of the heating pipe 9c
On the outer peripheral surface, a coating of far-infrared radiator is formed by thermal spraying.
The efficiency of the heat transfer coefficient to the oil tank has been improved.
This far-infrared radiator is SiO_TwoAnd AL_TwoO_ThreeAnd about 8: 2
Of quartz schist composed mainly of substances mixed in proportions of
(30 to 50 μm) is used. However, TiO _Two
Alternatively, a ceramic powder containing as a main component may be used.
According to this far-infrared radiator, sprayed on the inner peripheral surface
Efficiently absorbs the heat obtained from the gas and sprays it on the outer peripheral surface
What is done radiates heat efficiently, and oil in oil tank 6 is efficiently used
Heat to Note that the temperature of the pumped oil W is determined by a temperature sensor (not shown).
Precisely maintained at set temperature by sensor and bimetal
It has become.

FIGS. 3 to 7 show the internal structure of the oil tank 6 of the fryer 1, a circuit for circulating oil, and a control circuit for controlling oil circulation.

In the oil tank 6, the above-mentioned heating pipes 9c ‥ 9c
In addition, an electrode 7 for forming an electric field arranged on the mounting bracket 6b # 6b on the inner wall surface of the oil tank via the insulating pieces 23 # 23, and a float sensor 51 for detecting an oil amount of the oil tank 6
And a coating of a far-infrared radiator is formed on the inner surface of the oil tank 6 by thermal spraying.

The electrode 7 is connected to a voltage generator 20 built in the casing of the fryer 1 via a wiring 21, and a voltage is applied from the voltage generator 20 to form an electric field in the oil tank. The electrode 7 is formed in a rectangular shape, and its four corners are supported by the mounting brackets 6b # 6b on the inner wall of the oil tank in an insulated state via insulating pieces 23 # 23 made of Teflon. The electrode 7 has a plurality of holes 7a through 7a through which oil passes (see FIG. 4), and also plays a role as a wire net that prevents food from dropping to the bottom of the oil tank.

The wiring 21 extends from the voltage generator 20 and
One of the mounting brackets 6b # 6b, which is inserted into the oil tank through the insertion hole on the bottom of the oil tank, and the insulating piece 2 disposed thereon
3 and is connected to the bottom surface of the electrode 7. In addition, a packing 26 for preventing oil in the oil tank from leaking outside is provided in the wiring insertion hole in the oil tank bottom surface 6a. In addition, a cylindrical insulating member 25 is inserted into a hole through which the wiring of the mounting bracket 6b and the insulating piece 23 penetrates, so that the end of the wiring 21 is reliably insulated from the surroundings. On the other hand, the voltage generator 20 has a plug 24 connected to an external power supply (not shown).
Is provided at the end. Then, a voltage of 150 to 200 V is applied from the voltage generator 20 to the electrodes set in the oil tank.

In the fryer 1, an electrode 27 is also provided inside the storage tank 10 for temporarily storing the oil discharged from the oil tank 6, and is connected to the voltage generator 20 by a wiring 28. This electrode 27 is also used in the storage tank 10.
The voltage is applied from the voltage generator 20 to form an electric field in the storage tank 10. A voltage of about 800 V may be applied to the electrodes provided in the storage tank. In this way, by setting the voltage applied to the oil tank 6 lower than the voltage applied to the storage tank 10, even during a cooking operation, an electric field can be formed in the oil tank without electric shock, and the action of the electric field is applied to the oil. Can be given. However, this does not prevent application of any voltage to the electrode of the oil tank and the electrode of the tank, or application of high voltage to the electrode of the oil tank and low voltage to the electrode of the tank.

The electrode 7 is formed by forming an enamel coating layer 7B mixed with a far-infrared radiator on the surface of a stainless steel base 7A (see FIG. 5). Each hole 7a ‥ 7a
Is curved from the upper surface to the lower surface, so that the enamel is easily attached to the surface of the base 7A.

The far-infrared radiator sprayed on the inner surface of the oil tank and the far-infrared radiator mixed into the enamel include:
It is preferable to use quartz schist powder mainly containing SiO ₂ and AL ₂ O ₃ . However, a ceramic powder mainly composed of TiO ₂ may be used. The electrode may be formed by spraying a far-infrared radiator onto the electrode instead of mixing the far-infrared radiator into the enamel to form an enamel coating.

As described above, the electric field is formed in the oil tank and the storage tank, and the far-infrared radiator is provided on the inner surface of the oil and the electrode, whereby the intermolecular attractive force of the oil inside is strengthened and the activity of the oil is enhanced. Is achieved. Then, oxidation of the oil is prevented, and the freshness of the oil is maintained for a long time. In this embodiment, the electric field is formed in the oil tank and the storage tank in the circulation path. However, the electric field may be formed in a part of the circulation path. For example, the electric field may be formed only in the oil tank 6, It may be formed only in the storage tank 10. Oil tank 6
Alternatively, an electric field is formed in one of the storage tanks 10,
The other may be provided with a far-infrared radiator.

Next, the circulation path of the oil in the oil tank will be described.

The oil circulation path is switched by a switching valve 19 between an injection path 17 for injecting the filtered oil into the oil tank 6 and a cleaning path 18 having the nozzle gun 8 provided on the side surface of the fryer. The oil tank 6, a drain pipe 13 extending downward from a discharge portion provided at the center of the bottom of the oil tank 6, a storage tank 10 for temporarily storing the discharged oil, and a filtration device for filtering the oil 11, 12, 30;
A pump 16 for pumping oil from the storage tank 10. The discharge pipe 13 has a flow control valve 14 together with an on-off valve.
Is provided to regulate the amount of oil discharged from the oil tank.

The upper surface of the storage tank 10 for storing the oil discharged from the oil tank is open, and a first basket-like filter 11 having a large mesh and a basket-like first filter 11 having a smaller mesh than the first filter 11 are provided. A filtration unit having two filters 12 is attached to the upper end of the tank. The peripheral edge of the first filter 11 is formed slightly smaller than the second filter 12, and is provided inside the second filter 12. In the oil discharged from the oil tank 6, first, a large filter cake is filtered by the first filter 11, and a smaller filter cake is removed by the second filter 12. In addition, as each filter, the first
It is preferable to use the 30th mesh for the filter 11 and the 120th mesh for the second filter. However, the size is not limited to this, and a size suitable for the frequency of using the fryer, the type of food to be cooked, and the like may be used. Then, the oil stored in the storage tank 10 is circulated by the pump 16, and a filtration unit 30 which forms a part of a filtration device is provided between the pump 16 and the storage tank 10. The fried residue is filtered.

As shown in FIG. 6, the filtration unit 30 has a unit case 31 having a rectangular cylindrical shape, and an inflow pipe 3 through which oil flowing into the filtration unit 30 flows is provided at an upstream end surface.
7a, an outflow pipe 37b through which oil flowing out from the filtration unit 30 flows is provided on the downstream end face. The unit case 31 contains a plurality of quartz fragments 33 as a far-infrared radiator. This quartz shard 33 ‥
33 is a stone mainly composed of SiO ₂ and AL ₂ O ₃ ,
These are mixed in a ratio of about 8: 2.

On the upstream side of the quartz fragments 33, there is provided a thin insertion hole 34 formed in a direction perpendicular to the axial direction from one side surface thereof. In this insertion hole 34, a cartridge type card filter 32 is provided. Inserted. The card filter 32 inserted into the insertion hole 34 is formed in a rectangular shape, and a fine mesh mesh 35 is provided on almost the entire surface. Also, on one side edge of the card filter 32,
This card filter 32 is pinched and the unit case 31 is removed.
A knob 36 having a slightly thicker thickness is provided so that it can be easily attached to and detached from the device.

If a mesh No. 300 is used as the mesh 35 used for the card filter 32, fine fried scum can be appropriately filtered. However, the present invention is not limited to this, and several types of card filters may be prepared, and meshes of different sizes may be provided in each of them, so that a filter adapted to the use frequency or the like can be selected.

In the filtration unit 30 shown in FIG. 6, quartz quarry stone is used as the unit case 3 as the far-infrared radiator.
1, the mixture is not limited to this, and a mixture of SiO ₂ and AL ₂ O ₃ or TiO ₂ is formed on the surface of spherical ceramic balls 41 ‥ 41 as shown in a filtration unit 40 shown in FIG. _A plurality of sprayed powders of the far-infrared radiator ₂ may be accommodated. Although not shown in the drawings, the filtration unit may be configured by housing a powder of a far-infrared radiator sprayed on the surface of the nonwoven fabric by a low-temperature spraying method in a unit case.

The pump 16 for circulating the oil is provided in front of the filtration unit 30, and a switching valve 19 for switching the flow of the oil to the injection path 17 or the washing path 18 is provided downstream thereof.

The pipe of the injection path 17 is bifurcated in the middle, and supply ports 17a, 17a are provided at the end. Each of the supply ports 17a, 17a is attached to the bottom surface of the oil tank 6, and injects the oil filtered by the filtration devices 11, 12, 30 into the oil tank 6. During the cooking in the fryer, the injection path 17 is used to circulate the oil. If the nozzles are provided as the supply ports 17a, 17a, the inside of the oil tank can be conveniently washed with the hydraulic pressure injected from the nozzles.

On the other hand, the cleaning path 18 is configured such that the nozzle gun 8 is attached to the tip of a hose 8b formed of a heat-resistant material such as Teflon extending outside the casing of the fryer 1 (see FIG. 1). This path is used when the oil in the oil tank 6 is once extracted to the storage tank 10 and the inside of the oil tank 6 is washed. Since the cleaning path 18 can be freely moved by holding the nozzle gun 8 by hand, oil can be sprayed to a desired position from above the oil tank 6 and the inside of the oil tank can be cleaned with the filtered clean oil. .

Normally, the switching valve 19 is switched to the injection path 17 side, and the oil is automatically circulated while being filtered by the above-described filter device. At this time, the circulation of the oil is controlled by various control means provided in the circulation path as described below.

The oil tank 6 is provided with a float sensor 51 for detecting the amount of oil in the oil tank. The float sensor 51, the flow control valve 14 provided in the circulation path, and the pump 1
The drive motor 52 for operating the motor 6 is connected to the control unit 50. The control unit 50 receives a signal from the float sensor 51, and the control unit 50 determines the amount of oil in the oil tank based on the signal. Based on this determination, a signal is transmitted to the flow control valve 14 and the drive motor 52 to output the flow control valve 1
The amount of oil in the oil tank is adjusted by controlling the throttle amount of No. 4 and the rotation speed of the drive motor 52.

That is, when the oil in the oil tank 6 decreases while the fryer 1 is in use and the oil level falls to a predetermined height, the control unit 50 sends a signal sent from the float sensor 51 at this time to indicate that the oil level is insufficient. Judge that there is. The control unit 50, which has determined that the oil amount is insufficient, sends a signal so as to throttle the flow control valve 14, and also controls the drive motor 5
A signal is output to increase the number of rotations to reduce the amount of oil discharged from the oil tank 6 and increase the oil discharge of the pump 16. When the oil level in the oil tank 6 increases and the oil level rises and the oil level reaches a predetermined height, the control unit 50 recognizes a signal sent from the float sensor 51 and gradually reduces the throttle of the flow control valve 14. And a signal to drive motor 52 to reduce the number of revolutions. Then, the amount of oil discharged from the oil tank 6 and the pump 1
Oil tank 6 while balancing with the amount of oil discharged from 6
Is supplied with an appropriate amount of oil. When adjusting the amount of oil in the oil tank, the amount of oil may be adjusted only by adjusting the throttle amount of the flow control valve or adjusting the discharge amount of the pump.

Second Embodiment FIGS. 8 to 12 show a fryer according to another embodiment having an oil circulation path.

FIG. 8 shows an external view of a fryer 60 according to the second embodiment. Like the fryer according to the first embodiment, the fryer 60 includes a casing 61 forming an outer shell of the fryer 60, and side portions 62, 62. Casters 63a, 6 attached to the lower ends of the legs 63, 63 formed integrally therewith.
It is movably supported by 3a. Then, at the upper part of the casing, the front part 64, the side parts 62, 62 and the back part 65
And an oil tank 66 surrounded by a heat source NO.
An operation panel 64a including various switches such as an OFF knob HB, a temperature adjustment knob TB, a filtration mode operation switch PS, and various operation confirmation lamps LP is provided. A lever protruding from the front portion 64 below the operation panel 64a is an opening / closing lever 71 for discharging oil from the oil tank 66, and a window 64b provided at an upper portion of the operation panel 64a serves to control the heating of the heating device. It is for confirmation. The protrusion provided at the upper end of the back part 65 is an exhaust pipe 65A for discharging exhaust gas generated when heating the inside of the oil tank. A box-shaped storage tank 70 for temporarily storing the oil discharged from the oil tank 66 is provided between the legs 63, 63. Note that, also in the present embodiment, an electrode 67 is provided in the oil tank 66 in an insulated state, and an electric field is formed in the oil tank 66. Also in this case, the applied voltage may be set to about 150 to 200V.

Then, one side portion 6 of the fryer 60
2 is provided with a nozzle gun 75 which forms a part of the cleaning path and has an elongated nozzle 76 for injecting oil into the oil tank 66. The nozzle gun 75 according to the present embodiment is provided at the tip of a bellows-shaped hose 74, and the hose 74 is housed in a box-shaped hose housing portion 62a attached to the side surface portion 62 of the fryer 60. Nozzle 7
6 is detachably held with its tip facing upward. At this time, the tip of the nozzle is engaged with the holder 62b projecting upward from the side so that the nozzle gun 75 does not fall down.

As shown in FIG. 9, the nozzle gun 75 includes an on-off valve portion 77, a narrow nozzle 76 mounted on the outlet side of the on-off valve portion 77, and an L-shaped nozzle 76 for gripping the nozzle 76. And a trigger mechanism 80 for manually controlling the on-off valve 77. Hose 7
4 is connected to the inlet side of the on-off valve portion 77. The trigger mechanism 80 includes a drive lever 81 connected to a valve shaft 77 a of an on-off valve portion 77, and a trigger piece pivotally supported by a grip portion 78 via a pin 82 to rotate the drive lever 81 via a link 83. And a return lever 85 for the drive lever. In the trigger mechanism 80 having such a configuration, the grip portion 78 is gripped and the trigger piece portion 84 is held on the grip portion 78 side (FIG. 9).
To the position of the dashed line), the valve shaft 77a
Pivotally displaced clockwise in FIG. 9 to open the on-off valve portion 77, and the oil is ejected from the nozzle 76. When the trigger piece 84 is released from this state, the drive lever 81 returns and rotates by the return spring force of the return spring 85, and the opening / closing valve portion 77 is closed via the valve shaft 77a.

As shown in FIGS. 10 and 11, the fryer 60 is also provided with a cleaning path 90 for spraying oil with a nozzle gun 75 to wash the inside of the oil tank. Although there is a supply path to supply,
In the fryer 60, the supply path has two paths as follows. A pipe 101 for connecting an oil tank 66 and a storage tank (not shown) located below the oil tank 66.
A three-way switching valve 102 is provided in the middle of the path, and the oil circulates between the oil tank 66 and the storage tank as shown in FIG. 10 and the oil that flows out of the oil tank 66 to the storage tank as shown in FIG. It is possible to select a route that circulates the piping without discharging the oil and returns it to the oil tank as it is.

In the fryer 60, pipes 104, 104 to which swirl discharge nozzles 103, 103 are attached at the ends are provided at diagonal positions of the oil tank 66, respectively. These pipes 104, 104
3 and 103 are inserted into the oil tank 66 at the lower ends of the side walls 105 and 105, and the other ends are connected to the pipes 106 and 10.
7 and 108 to form an oil circulation path A (a portion surrounded by a two-dot line). The pipe 107 and the pipe 108 are connected via a filtration unit 109 for activating the oil to maintain the freshness and a pump 110 for circulating the oil.
Another pipe 101 for supplying oil from a storage tank (not shown) to the circulation path A is connected to a connection portion through a three-way switching valve 102. In addition, a pipe 1 connected to the discharge side of the pump 110
08 and a bypass pipe 111 communicating the junction of the pipe 104 and the pipe 106 on the right side of the oil tank. This bypass pipe 111 acts as an oil sump, and the pump 1
This is to secure 10 discharge amounts.

As shown in FIG. 10, when the oil is circulated between the tank (not shown) and the oil tank 66, the three-way switching valve 102 is rotated at a right angle to the pipe 101, and the oil in the storage tank is rotated. Is introduced into the circulation path A.

The oil introduced into the circulation path A from the storage tank is filtered by the filtration unit 1 located on the left side of the direction switching valve 102.
09, and is further discharged by a pump 110 located on the left side thereof, and then branched in two directions: a pipe 104 provided on a left side wall 66a of the oil tank 66 and a bypass pipe 111. The oil introduced into the bypass pipe 111 is supplied to the pipe 10 provided on the right side wall 66a of the oil tank 66.
4 is introduced. And both side walls 66a, 6 of the oil tank 66
The oil that has flowed through the pipes 104 provided in 6 a is supplied into the oil tank 66 from the swirl discharge nozzles 103. The oil in the oil tank passes through an on-off valve 72 provided at the bottom of the oil tank 66 and is returned to the storage tank again.

At this time, since the swirling nozzles 103, 103 are provided at diagonal positions in the oil tank 66, FIG.
As shown in the figure, the oil spouted from the nozzles 103, 103 is swirled in the oil tank 66 while swirling in the oil tank 66.
Is washed away. Therefore, the fried scum accumulated in the oil tank is efficiently washed.

On the other hand, when the oil is circulated in the circulation path A without returning the oil to the storage tank as shown in FIG. This is performed by closing the communication port between the pipe 106 and the circulation path A and connecting the port between the pipe 106 and the pipe 107.

In this case, the oil discharged from the pump 110 flows through the pipe 108 and the pipe 104 on the left side of the oil tank and is introduced into the oil tank 66 from the swirl discharge nozzle 103 provided at the tip of the pipe 104. Then, the oil inside the oil tank is sucked from the nozzle 103 on the right side of the oil tank and discharged to the pipe 104, flows through the pipe 106, the direction switching valve 102, and the pipe 107, and is guided to the filtration unit 109. The oil that has passed through the filtration unit 109 is discharged again by the pump 110 and circulates on the circulation path A through the same path. The bypass pipe 111 that communicates the pipe 108 and the pipe 106 plays a role of an oil reservoir, and prevents an idle operation that occurs due to lack of oil in the circuit immediately after the operation of the pump 110. This bypass pipe 11
A constant amount of oil always remains in the pump 1 and the oil stored in the bypass pipe 111 when the pump 110 operates
It is designed to be sucked into 10. After the pump 110 operates, the oil discharged from the pump 110 and flowing into the bypass pipe 111 side
And is introduced into the circulation path A at the junction of the pipes 104 and 106, passes through the filtration unit 109, and is sucked into the pump 110 again.

According to the oil circulation path shown in FIGS. 10 and 11, the oil passes through the filtration unit 109, and the oil is activated by the action of the far-infrared radiator accommodated in this unit 109, and the freshness is increased. Maintained for a long time. In the present embodiment, a voltage of 150 to 200 V is applied to the oil tank, and an electrode is provided in the storage tank.
If an electric field is formed in the storage tank by applying a voltage of about V, freshness can be more effectively maintained for a long period of time. further,
When an electrode is provided inside the filtration unit 109 in an insulated state, and a voltage is applied to this electrode to form an electric field inside the unit 109, it is further activated and the freshness can be maintained effectively.

FIGS. 13 to 16 show applied examples of the fryer according to this embodiment. In the fryer 120 shown in these figures, electrodes are provided in an oil tank 121 in an insulated state, and an electric field is formed in the oil tank, but the description is omitted.

The fryer 120 shown in these figures is provided with a control box 122 for controlling the circulation of oil, and the control box 122 causes a pump 123 for circulating oil to ignite the fryer 120.
It is controlled to operate in conjunction with the fire extinguishing state and the open / close state of an on-off valve 125 for discharging oil from the oil tank 121 to the storage tank 124. Control box 122
Is provided with a mode changeover switch 126. If the fire of the fryer 120 is not extinguished, the pump 123
And a second mode in which the pump 123 can be operated even when the fire is ignited.
The mode can be switched between two modes.

FIG. 13 shows the flyer 120 in the first mode.
And shows a case where the pump 123 does not operate when the ignition is performed during cooking. Normally, when cooking fried food, all oil is
Storage tank 1
Inside 24 is empty oil. Therefore, when the pump 123 is operated with the direction switching valve 128 set to introduce oil from the storage tank 124 to the circulation path A, no oil is sucked into the pump 123, the pump 123 runs idle, and the pump 123 burns. I will. In order to avoid such an inconvenience, in the fryer 120, in the state where the fire is ignited during cooking, the ON-OFF switch 127 for operating the pump 123 is cut off from the pump drive motor in the control box, and the ON-OFF switch 127 is turned ON. -OF
The pump 123 cannot be operated by the F switch 127.

When the ignition switch 129 of the fryer 120 is in the ignition position, the relay connected to the ignition switch 129 in the control box 122 is activated, and the ON-OFF switch 127 and the pump 123
Circuit is disconnected from the drive motor. Therefore, even if the operator presses the ON button of the ON-OFF switch 127, the pump 123 does not operate.

On the other hand, the oil in the oil tank 121 is stored in the storage tank 124.
Since the on-off valve 125 for discharging to the air can be freely opened and closed, if the on-off valve 125 is opened in the ignited state, the oil in the oil tank 121 runs out, resulting in a so-called empty-fired state. In order to prevent such an inconvenience, the fryer 120 is provided with an empty boil prevention buzzer 130 to alert the worker.

On the other hand, FIG.
4 shows a case where the oil tank 121 and the circulation path A are cleaned while filtering the fried scum through the filtration unit 131 provided in the tank 124. Oil tank 121 or circuit A
When cleaning is performed, it is necessary to operate the pump 123 to circulate the oil between the oil tank 121 and the storage tank 124. For this reason, when the fire is extinguished by turning the ignition switch 129, the relay connected to the ignition switch 129 is activated in the control box 122, and the ON-O is turned on.
An electric circuit between the FF switch 127 and the pump drive motor is connected. Then, the operation of the pump 123 is ON-
This is made possible by the OFF switch 127.

FIGS. 15 and 16 show the mode switch 12.
6 shows a state in which the fryer 120 is used in the second mode by switching, and the pump 123 can be operated regardless of the fire ignition state or the fire extinguishing state. In this mode, the ON-OFF switch 127 of the pump 123 is
Is linked with an on-off valve 125 for discharging oil from the oil tank 121 to the storage tank 124. When the ON-OFF switch 127 is turned on and the on-off valve 125 is opened, the pump 123 operates and the on-off valve 125 is closed. For example, the control box 122 controls the pump 123 to stop in conjunction with this. That is, in the second mode, filtration is possible in any of the ignition state and the fire extinguishing state.

FIG. 15 shows a case where the oil in the oil tank 121 is filtered during cooking in the second mode. In this case, when the on-off valve 125 is opened, the oil in the oil tank 121 is discharged to the storage tank 124, and the fried scum is filtered by the filtration unit 131 provided in the storage tank 124. The filtered oil is pumped by the pump 123 from the storage tank 124 and is returned to the oil tank 12 again.
Returned to 1. Then, when the on-off valve 125 is closed, the pump 123 is also stopped. FIG. 16 shows a state in which the oil tank 121 is intermediately filtered with the fryer set down. For example, there is a case where the fire of the fryer 120 is dropped during lunch break or the like, and the oil tank 121 and the circulation path A are desired to be cleaned to some extent during this time. The usage in such a case is shown.

Also in this case, the ON-OFF switch 127
When the on-off valve 125 is opened in a state where is turned ON, the oil
From 21 is discharged to the storage tank 124. The discharged oil is filtered by the filtration unit 131, pumped up by the pump 123, and returned to the oil tank 121 again. This flyer 12
At 0, as described above, the flow rate at which oil is discharged from the oil tank 121 to the storage tank 124 is greater than the flow rate at which the pump 123 discharges oil into the oil tank 121, so that the oil poured into the oil tank 121 stagnates in the oil tank. Without opening the on-off valve 125, the fried slag contained in the oil is always discharged from the oil tank, and the oil tank and the circulation path can be effectively cleaned. When the on-off valve 125 is closed, the pump 123 stops, and the circulation of the oil ends. Note that if electrodes are provided in the filtration unit 132 of the fryer 120 shown in FIGS. 13 to 16 in an insulated state and an electric field is formed inside, the freshness of the oil can be more effectively maintained.

Incidentally, the interlocking of the pump and the on-off valve may be performed by the device 140 shown in FIG.

The device 140 shown in FIG. 17 has a valve operating handle 141 protruding from the front of the fryer and a limit switch 142 operated by the valve operating handle 141.
And a drive control unit 122 for the pump 123. The valve operating handle 141 is selectively rotated between a solid line position and a chain line position in FIG. 17 and has a connecting piece 143 connected to the valve shaft 125a of the on-off valve 125 at the end thereof. In addition, a drive piece 144 for the detection lever 142a of the limit switch 142 is integrally formed. The limit switch 142 is in the OFF state when the operation handle 141 is at the solid line position, and when the operation handle 141 is rotated to the chain line position, the drive piece 144 pushes the detection lever 142a to drive the detection switch 142a. Becomes

Next, an embodiment of a filtering device in which the first to third filtering portions are integrally formed will be described with reference to FIG.

The filtering device 150 comprises a first filtering section 151 formed of a rectangular basket for filtering large fried slag, and a rectangular basket provided outside the first filtering section 151. (1) A second filtration unit 152 for filtering small fried slag that is not filtered by the filtration unit 151, and has a function of filtering fine fried scum attached to one side of the periphery of the second filtration unit 152 and activating oil. Box-shaped filtration unit 153
Are integrally provided.

The second filtering portion has a rectangular basket 152a, and a storage tank 1
Hook 152 for hooking on top edge of 56
b, 152b are formed so as to project outward.
The hooks 152b, 152b are formed by bending an elongated wire. The second filtration unit 152 is formed of a pair of side walls 15 having a shorter distance between opposing side walls of the storage tank side walls.
The hooks 152b, 152b are attached to the storage tank 156 by hanging the hooks 152b, 152b on the upper edges of the 6a, 156a. Similarly, the first filtering unit 151 also includes a rectangular cage 151a and hooks 151b, 151b that protrude outward from upper ends of a pair of opposed side walls of the cage 151a. This first filtration unit is inside the second filtration unit 152,
Hanging portions 152b, 152 of the side walls of second filtering portion 152
b on the upper edges of a pair of side walls having no b.
b and 151b are hooked and supported by the second filtration unit. In addition, the hooks 151b, 1 of the first filtration unit 151
51b is also formed by bending an elongated wire.

In this embodiment, the filtration unit 153 for filtering fine fried slag from oil is provided in the second filtration unit 152.
And the filter device 150 is integrally formed. In the filtering unit 153, a far-infrared radiator is accommodated in a unit case 154 in a rectangular place, and a cartridge type card filter 155 is provided below the unit case 154 that is upstream of the oil flow.

According to the filtration device 150, the oil in the oil tank of the fryer first passes through the first filtration unit 1514, then passes through the mesh of the second filtration unit 152, and then enters the storage tank 156.
Will be introduced. The oil introduced into the storage tank 156 is sucked up by a pump 157 provided in front of the filtration unit 153, and is returned to the oil tank again. Since the oil passes through the inside of the filtration unit 153 from the bottom to the top, in this embodiment, the fine oil which is not removed by the first and second filtration units 151 and 152 by the card filter 155 at the lower end of the filtration unit 153 is used. The fried cake is filtered and then passed through a unit case 154 containing a far-infrared radiator to activate the oil and maintain its freshness for a long time.

The far-infrared radiator accommodated in the unit case 154 is preferably made of quartz flakes containing SiO ₂ and AL ₂ O ₃ . The mesh of the card filter 155 may have a roughness suitable for the frequency of use.

FIGS. 19 to 22 show a versatile filtration device having a storage tank provided with a filtering function and an electric field function.

This filtering device 160 is designed to be set in place of a storage tank installed in a fryer already delivered to a restaurant or the like.
And this tank part 1 from the oil tank of the fryer to be set
A filter section for filtering the fried residue from the oil discharged to 61 and an electric field device for forming an electric field inside the tank section 161 are provided, and the entire apparatus is casters 164 to 164 in order to facilitate the movement of the apparatus. It is supported by a cart 163 attached.

In the filtering device 160 shown in FIG. 19, a driving unit 162 having a driving source in a box-shaped casing 162a and integrally formed with a truck is provided on the front side in FIG.
The back side is a tank section 161 for temporarily storing oil discharged from the fryer, and is provided detachably on the carriage 163. A pump 165 for circulating oil and a motor for driving the pump 165 are built in a casing 162a of the driving unit 162. A power cord 200 extends from the side surface of the casing 162a and is inserted into a power plug (not shown). A switch 211 for operating the filtration device is provided above the power cord 200.

On the other hand, the tank section 161 is a rectangular casing having an open upper part, and two large and small rectangular basket-shaped filter nets 166 and 167 are attached to the upper end edge of the side wall of the tank section 161. It is provided in the tank part 161 in such a way that These filtering nets 166 and 167 are for filtering the fried slag contained in the oil discharged from the fryer. The first filtering net 166 having a large mesh and a small outer shape has a smaller mesh. It is arranged and attached inside the periphery of the second filtration net 167 having a large outer shape. As these filtration nets 166 and 167, it is preferable to use a mesh of No. 30 in the first filtration net and a mesh of No. 120 in the second filtration net. What is necessary is just to use an appropriate thing corresponding to a kind.

Further, a box-shaped filtration unit 168 is disposed on the upper surface of the casing 162a. The filtration unit 168 is set in a circuit section in which oil pumped from the tank section 161 by the pump 165 is being supplied to the pump 165.
At 6,167, fine fried scum which cannot be removed and still remains in the oil is filtered. The filtration unit 168 includes a rectangular box-shaped casing 169 and a rectangular cartridge filter 170 that is removably inserted into the casing 169. Casing 1
The insertion hole 16 into which the cartridge filter 170 is inserted horizontally so as to cross the inside of the casing is provided on one side surface of the insertion filter 16.
9a are formed. On the other hand, cartridge filter 1
Reference numeral 70 denotes a rectangular frame 170a serving as an outer peripheral edge, and a filter 170b having a fine mesh provided integrally with the frame in the frame. As the mesh of the cartridge filter 170, a mesh of No. 300 may be used.

The tank section 161 of the filtration device 160, the filtration unit 168, and the oil tank of the fryer in which the filtration device 160 is set are connected by piping. The tank unit 161 and the filtration unit 168 are connected to a hook-shaped suction pipe 171 inserted into the tank and the filtration unit 16.
8 is connected via a T-shaped pipe joint 172 erected on the upper surface of the filter unit 168, and the lower surface of the filtration unit 168 is connected to a casing 162a.
And a pipe 173.
The filtering device 160 and the oil tank of the fryer are connected by an oil supply unit 176 attached to a driving unit 162 of the filtering device 160.

A T-shaped pipe joint 172 erected on the upper surface of the filtration unit 168 has a vertical pipe penetrating through the casing 169 and communicating with an insertion hole 169a into which the cartridge filter 170 is inserted. The rear end of the suction pipe 171 inserted into the portion 161 is connected.
The suction pipe 171 is inserted into the tank part 161 from the open surface of the tank upper part 161, and the upper part is bent so as to bypass the upper end of the side wall of the tank part 161. A notch 171a is formed at the tip, and even when the bottom surface of the tank 161 and the tip of the suction pipe 171 are in contact with each other, the tip of the suction pipe 171 is kept in contact with the tank 16a.
Oil can be sucked in without being closed at one bottom. The suction pipe 171 is provided rotatably about the shaft of the horizontal pipe of the T-shaped pipe joint 172,
1 is rotated between a state in which it is hung down along the side wall and a state in which the tank part 161 is flipped up. Therefore, when removing the tank portion 161 from the carriage 163, the tank portion 161 can be easily removed without being disturbed by the suction pipe 171.

The pump 165 in the casing 162a of the drive unit 162 has its suction side connected to the lower surface of the filtration unit via a pipe 173, and its oil discharge side connected to the drive unit 1
The L-shaped pipe joint 174 protruding from the upper surface of the casing 162a of the 62 is connected by a pipe 175. And
The L-shaped pipe joint 174 is connected to an oil supply unit 176 that communicates the filtration device 160 with the fryer oil tank. The oil supply unit 176 includes a hose 177 having a rear end connected to an L-shaped pipe joint 174, and a nozzle 1 having a hook shape attached to a front end of the hose.
78. The nozzle 178 is provided with a grip portion 179 projecting obliquely rearward and integrally with the nozzle 178. Normally, this nozzle 178 is used to circulate the oil, as shown in FIG.
When cleaning the inside of the oil tank 191 by spraying the clean oil that has passed through the filtering device 160 into the oil tank 191, the grip 179 is gripped and the nozzle 178 is freely moved in the oil tank 191. To be cleaned.

Further, the filtering device 160 is provided with an electric field device for forming an electric field in the tank section 161. The electric field device is a casing 162a of the driving unit 162.
It comprises a voltage generator 180 built therein and an electrode plate 181 connected to the voltage generator 180 by wiring and arranged in an insulated state in the tank 161 (see FIG. 20). The electrode plate 181 is connected to the tank 16
1 is formed to be smaller than the tank portion 161 so as not to come into contact with the inner wall surface of the tank portion 16.
1 mounting bracket 161a ‥ 161 formed on the inner wall surface
a is attached via insulating members 182 # 182 formed of Teflon or the like. Also, so as not to hinder the rotation of the suction pipe 171 inserted into the tank part 161,
On the side where the suction pipe 171 is inserted, a certain gap is provided between the side wall of the tank part 161 and the peripheral edge of the plate 181. On the surface of this electrode plate 181,
An enamel coating is formed on the surface of the fryer in the same manner as the electrode installed in the oil tank of the fryer described in the first embodiment,
The enamel contains a far-infrared radiator made of SiO ₂ and AL ₂ O ₃ .

The electrode plate 181 and the voltage generator 1
Since the wiring 183 connecting to the first through hole 80 penetrates the through hole formed in the side wall of the tank portion 161, the wiring 183 penetrates through the through hole so that the oil in the tank portion 161 does not leak from the through hole portion. A heat-resistant packing 184 is attached to the hole.

A voltage of about 800 V is applied to the plate in the tank 161 by the electric field device, and an electric field is formed inside the tank 161.

Further, this electric field device has a flyer 19
An electric field unit 194 for forming an electric field in the oil tank by immersing it in the oil tank 191 is separately provided. Figure 1
As shown in FIG. 9, the electric field unit 194 includes an electrode plate 195 having a plurality of through holes 196１９196 formed in a rectangular plate-shaped stainless steel plate, and an electrode plate 195 which is erected at a corner of the electrode plate 195. Electrode rod 1 for applying voltage to
97, and a wiring 198 for connecting the electrode bar 197 and the voltage generator. Also on this electrode plate 195, an enamel coating is formed on the surface, and a far-infrared radiator is mixed in the enamel.

On the other hand, the voltage generating device 180 in the drive casing 162a is provided with another wiring 203 in addition to the wiring 183 connected to the electrode plate 181, and its tip is attached to the side surface of the casing 162a. Connected to the connector 204. The connector 199 provided at the end of the wiring 198 of the electric field unit 194 is configured to be connected to the connector 204 mounted on the side surface of the casing. The electrode plate 195 has 150 to
A voltage of about 200 V and a voltage lower than the voltage of the tank 161 is applied. In addition, as shown in FIG.
Is immersed in the oil tank 191 of the fryer 190, an insulating piece (not shown) is attached to the lower part of the electrode plate 195, and the insulating state is maintained by placing the piece on the heating pipe 210 # 210 via the insulating piece. Good to do.

In this embodiment, the wiring 198 of the electric field unit 194 and the wiring 203 extending from the voltage generator 180 are connected via the connectors 199 and 204.
The electrode plate 195 and the voltage generator 180 may be directly connected by one wire. In addition, as shown in FIG. 22, the wiring extending from the voltage generator is bound to the hose 177 of the oil supply unit 176 with the clip 201, and the wiring and the oil supply unit are integrated, so that the wiring does not interfere. It is convenient. In FIG. 22, the wiring 198 extending from the voltage generator (see FIG. 20) is pulled out from the hole of the case 162a from which the L-shaped piping joint 174 projects, and the wiring 198 is moved along the hose 177 to move the electrode rod at the tip to the right of the oil tank. It extends to the back side. The middle part of the wiring is bound to the hose or nozzle at predetermined intervals by clips 202 ‥ 202, and the oil supply unit 176 and the wiring 198 are integrated. Instead of using a clip, the wiring may be simply wound around a hose and extended to the oil tank.

According to the filtering device 160 having the above-described structure, the oil discharged from the fryer first passes through the first filtration net to filter large fried scum contained in the oil, and then the first filtration unit The oil is stored in the tank unit 161 after the smaller fried scum is filtered in the second filter unit of the smaller mesh. The oil stored in the tank 161, the tank 16
Due to the action of the electric field formed within 1, the intermolecular attraction is strengthened and activated. Thereafter, the oil in the tank unit 161 is sucked up by the pump, passes through the filtration unit serving as the third filtration unit, and the fine fried scum is filtered. The filtered oil is supplied again to the oil tank of the fryer via the oil supply unit. By repeating such circulation, an activated oil without frying residue is formed, and the freshness of the oil is maintained for a long time.

In this embodiment, a voltage of 800 V is applied to the electrode plate 181 of the tank portion 161, whereas a lower voltage of 150 to 2 is applied to the electrode plate 195 of the oil tank 191.
Although an electric field is formed by applying a voltage of 00 V, the electric field is not limited to this.
A similar voltage may be applied to the electrode plate 195, or a high voltage may be applied to the electrode plate 195 of the oil tank 191 and a low voltage may be applied to the electrode plate 181 of the tank unit 161. Furthermore, even if an electrode is provided only in either the tank part 161 or the oil tank 191, the effect of the electric field can be sufficiently imparted to the oil.

Since the nozzle of the oil supply unit is provided with a gripper, the gripper can be gripped and the nozzle can be freely moved to a desired position in the oil tank, and the oil tank can be evenly filled with the filtered clean oil. Can be cleaned. In addition, if the entire filtering device 160 is supported by a cart with casters as in the present embodiment, the work of replacing the existing storage tank with the present filtering device 160 can be efficiently performed, but the filtering device 160 can be installed without the casters. You may comprise.

[0113]

As described above, according to the fryer of the present invention, not only does the filtering device remove the fried scum contained in the oil, but also the electric field formed by the electrodes of the circulation path and the far-infrared radiator provided in the circulation path. The freshness of the oil can be maintained for a long time by the respective actions of the far-infrared radiator accommodated in the filtration unit. In addition, the oil filtered by the filtration unit provided with the far-infrared radiator is sprayed into the oil tank by a nozzle and a nozzle gun, so that every corner of the oil tank can be washed. In addition, since the filter part of the filtration unit is detachably provided, fried scum accumulated in the filter part can be easily washed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fryer according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a heating mechanism of the fryer shown in FIG.

FIG. 3 is an explanatory view showing the structure of the inside of an oil tank and a circulation path of the fryer shown in FIG. 1;

FIG. 4 is a perspective view of a plate material formed by a far-infrared radiator used for the fryer of FIG. 1;

5 is an enlarged longitudinal sectional view of the electrode shown in FIG.

FIG. 6 is a perspective view of a filtration unit provided in a circulation path.

FIG. 7 is a perspective view of a filtration unit according to another embodiment different from the filtration unit of FIG. 6;

FIG. 8 is a perspective view of a fryer according to another embodiment different from the fryer of FIG. 1;

FIG. 9 is a side view of a nozzle gun provided in the fryer of FIG. 8;

FIG. 10 is an explanatory diagram showing a circulation path of oil in the fryer shown in FIG. 8;

FIG. 11 is an explanatory diagram showing a circulation path of oil in the fryer shown in FIG. 8;

FIG. 12 is a diagram showing a flow of oil in an oil tank of the fryer shown in FIG. 8;

FIG. 13 is an explanatory view showing an application example of a fryer provided with the circulation path shown in FIGS. 10 and 11;

FIG. 14 is an explanatory view showing a state in which the pump is operated in a fire extinguishing state of the fryer shown in FIG. 13;

FIG. 15 is an explanatory diagram showing a state in which the mode of the fryer having the circulation path shown in FIGS. 13 and 14 is switched and used.

FIG. 16 is an explanatory diagram showing a state in which the pump is operated in a fire extinguishing state of the fryer shown in FIG. 15;

FIG. 17 is a structural view of an apparatus provided with a mechanism different from the pump and switching valve connecting mechanism provided with the fryer shown in FIGS.

FIG. 18 is a perspective view schematically showing a filtering device in which first to third filtering portions are integrally formed.

FIG. 19 is a perspective view showing the structure of a filtration device including a filtration mechanism, an electric field mechanism, and a driving device.

20 is a longitudinal sectional side view showing the internal structure of the filtration device of FIG.

21 is a diagram showing a state where the oil supply unit of the filtration device shown in FIG. 19 is hung on an oil tank side wall.

FIG. 22 is a diagram showing a state where wires are bound to an oil supply unit and the wires are extended to an oil tank.

[Explanation of symbols]

 Reference Signs List 1 fryer 6 oil tank 7 electrode 8 nozzle gun 9 heating mechanism 9c heating pipe 10 storage tank 11 first filter 12 second filter 14 flow control valve 15 on-off valve 16 pump 17 injection path 18 washing path 20 voltage generator 27 electrode 30 filtration unit 32 Card filter 33 Quartz stone 40 Filtration unit 41 Ceramic ball 45 Voltage generator 50 Control unit 51 Float sensor 60 Fryer 66 Oil tank 67 Electrode 70 Storage tank 75 Nozzle gun 80 Trigger mechanism 90 Cleaning path 102 3-way switching valve 103 Swirling discharge nozzle 109 Filtration unit 110 pump 111 bypass pipe 120 fryer 121 oil tank 122 control box 123 pump 124 storage tank 125 on-off valve 126 mode switch 29 Ignition switch 131 Filtration unit 132 Filtration unit 141 Valve operation handle 150 Filtration device 151 First filtration unit 152 Second filtration unit 153 Filtration unit 156 Storage tank 160 Filtration device 161 Tank unit 162 Drive unit 163 Dolly 165 Pump 166 First filtration net 167 Second filtration network 168 Filtration unit 170 Cartridge filter 176 Oil supply unit 180 Voltage generator 181 Electrode plate 190 Fryer 191 Oil tank 194 Electric field unit 195 Electrode plate 197 Electrode rod 198 Wiring

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Akinori Ito 5-19, Sakaimachi, Chigasaki-shi, Kanagawa F-F Lab. Co., Ltd. F-term (reference) AB03 AB22 AB24 AD07 AD09 BB02 BB12 BB14 BB23 BC12 BC22 CA04 CB02 CC08 4D064 AA23 BM25 BM35 BM37 4D066 AA02 AA07 AB06 AC03 BB14 BB18

Claims (17)

[Claims] 1. A fryer that fries and cooks ingredients in an oil tank by batch processing, wherein the fryer includes a circulation path having a storage tank for storing oil discharged from the oil tank and a filtration device for filtering the oil. An electrode is provided on at least a part of the circulation path, and an electric field is formed on a part of the circulation path. 2. The method according to claim 1, wherein the electrodes are provided in the oil tank and the storage tank, respectively, and a voltage applied to the electrodes in the oil tank is set lower than a voltage applied to the electrodes in the storage tank. The flyer according to claim 1. 3. An electrode connected to a voltage generator is disposed in the oil tank, and the electrode is made of a plate having a plurality of holes formed therein, and is supported in the oil tank via an insulating member. The fryer according to claim 1, wherein: 4. The electrode is supported on the wall surface of the oil tank via an insulating piece, and a wiring connecting the electrode and the voltage generator is provided through the insulating piece and the wall surface of the oil tank. The fryer according to claim 3, wherein: 5. The fryer according to claim 3, wherein a film of a far-infrared radiator is formed on a surface of the electrode. 6. The fryer according to claim 1, wherein the circulation path includes a far-infrared radiator at least in a part thereof. 7. The fryer includes, in the circulation path, detecting means for detecting an oil amount in the oil tank, and oil amount adjusting means for adjusting an oil amount in the oil tank in accordance with an output signal of the detecting means. The fryer according to claim 1, wherein: 8. The filter device is provided in the storage tank for temporarily storing the oil discharged from the oil tank, and the filter device filters large fried scum contained in the oil discharged from the oil tank. 2. The fryer according to claim 1, further comprising: a first filtration unit; and a second filtration unit for filtering smaller fried slag contained in the oil filtered by the first filtration unit. 9. The fryer according to claim 8, wherein the filtration device further comprises a filtration unit for filtering fine fried scum downstream thereof. 10. The fryer is provided with a separate preliminary circulation path through which the oil discharged from the oil tank passes directly through the filtration unit and returns the oil to the oil tank as it is, and the direction switching of the circulation path is provided. 10. A fryer according to claim 9, wherein a flow of the oil can be switched between the circulation path and the preliminary circulation path by a valve. 11. The filter unit according to claim 1, further comprising: a filter section for filtering fine fried scum, and a case section containing a far-infrared radiator through which the oil filtered by the filter section passes. The fryer according to claim 9. 12. The fryer according to claim 11, wherein the filter unit is detachable from the filtration unit. 13. The circulation path includes: an injection path for injecting the oil filtered by the filtration device into the oil tank; a cleaning path for cleaning the inside of the oil tank; and an injection path or the cleaning path for circulating oil. The fryer according to claim 1, further comprising an inducible switching valve on at least one of the fryers. 14. The fryer according to claim 13, wherein the cleaning path includes a hose extending to the outside of the fryer, and a spray nozzle attached to the hose. 15. A filtering device installed in close proximity to a fryer for cooking and fried food in an oil tank, for filtering oil used in the fryer, and a filtering unit for filtering oil discharged from the oil tank. A tank for storing the oil filtered by the filtration unit, oil supply means for supplying the oil stored in the tank to the oil tank again, and a voltage generator for forming an electric field. Characteristic filtration device. 16. The filtering device according to claim 15, wherein an electrode disposed at least in one of the tank portion and the oil tank is connected to the voltage generating device. 17. The filtering device according to claim 15, wherein the filtering device further includes a further filtering portion downstream of the tank portion for filtering fine fried scum.