JP2010183971A - Fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water circulation fryer provided with a filter water tank in which dirt is hardly deposited on an inner wall, which reduces time and labor of cleaning, and is free of maintenance. <P>SOLUTION: The fryer has: a vat for storing a cooking oil layer and a water layer which are in contact with each other on a boundary surface, into two vertical layers; a heater placed in the oil layer; a circulation pipe which has a pump in a passage, sucks water in the vat, and returns the water to the water layer through a supply port in a vat side wall; and a cylindrical can-like filtering water tank provided in the passage of the circulation pipe. The filtering water tank includes a horizontal filter which is provided with an inlet for feeding the water in the horizontal eccentric direction from the side wall, and an exit for sending the water out of the side wall above the entrance to spirally rotate the water in the horizontal direction and vertically divides the inside into two at the middle of the inlet and the exit. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a flyer for storing an oil layer and an aqueous layer in two upper and lower layers in a storage tank, and includes a filtered water tank that sucks water in the aqueous layer from the storage tank to remove foreign substances and returns the water layer to the aqueous layer again. Regarding the flyer.

  In the conventional fryer, the oil layer and the water layer are divided into two layers in the storage tank, the oil layer and the water layer are in contact with each other at the boundary surface, and the oil layer is heated by a heater provided in the middle part of the oil layer to cook fried food (Patent Document 1). In such a fryer, the frying residue etc. which generate | occur | produce in deep-fried food cooking are submerged and isolate | separated into an aqueous layer, and it can maintain the cleanliness of oil.

Further, in Patent Document 2, in a fryer having an oil layer 2 and an aqueous layer 3, water is sucked out of the storage tank 1 from the aqueous layer 3 and returned to the aqueous layer 3 again from the supply port 1c provided on the side wall of the storage tank 1. A circulation pipe 6 is provided which can horizontally rotate the water layer 3 and the oil layer 2 (FIGS. 5 and 6).
In such a fryer, the amount of oil in contact with the surface of the heater 4 is increased by the horizontal rotation of the oil layer 2, and the heat exchange efficiency can be increased. In addition, by actively bringing oil and water into contact with each other at the boundary between oil and water, not only deep-fried but also liquid components from food materials, water-soluble oxides generated by oil hydrolysis and thermal oxidation, etc. The deterioration of cooking oil can be greatly suppressed.

In addition, as shown in FIG. 5, the flyer disclosed in Patent Document 2 includes a filtration water tank 7 provided with a filter 7 a therein in the path of the circulation pipe 6. In this filtered water tank 7, a filter 7a that bisects the inside is installed vertically, and water that has passed through the circulation pipe 6 and has flowed into the upstream side of the filter 7a passes through the filter 7a and is stored in the storage tank 1 by the circulation pipe 6. However, the fried residue contained in the water is separated and sinks to the bottom on the upstream side of the filter 7a.
Thereby, since fried residue etc. can be isolate | separated from the water in the water layer 3 and water can be returned to the water layer 3 again, the water layer 3 of the storage tank 1 can always be maintained clean. Therefore, it is possible to use the fryer continuously and effectively for a long time.

Furthermore, the filtered water tank 7 is provided with a foreign substance removing device that can remove foreign substances and replace water without removing them from the fryer and cleaning them (FIG. 6). This foreign matter removing device is configured by a foreign matter removing pipe 9 connected to the filter 7 a upstream side of the filtered water tank 7 and a water supply pipe 10 connected to the filter 7 a downstream side of the filtered water tank 7.
Water circulation between the water layer 3 of the storage tank 1 and the filtered water tank 7 is stopped, and the foreign matter removing pipe 9 on the upstream side of the filter 7a is opened to discharge the foreign matter together with water, and water is supplied from the water supply pipe 10. Thus, it is possible to remove foreign substances and replace water without removing the filtered water tank 7. Further, since the supplied water permeates the filter 7a in the reverse direction from the downstream side, it is possible to prevent foreign matter adhering to the filter 7a from flowing and prevent the filter 7a from being clogged.

  Further, as shown in FIG. 6, the outlet of the filtered water tank 7 is provided at a high position, and when the water level in the filtered water tank 7 is lowered, air may be mixed into the circulation pipe 6. In the path from the tank 1 to the storage tank 1, a defoaming water tank 13 for storing water and storing water in the lower part and storing air in the upper part and separating water and air is installed (FIGS. 5 and 6). . Since the upper end of the defoaming water tank 13 is connected to an air vent pipe provided with an internal pressure adjusting means 13a, even if air is mixed into the circulation pipe 6 from the outlet of the filtered water tank 7, the accumulated air is discharged timely. It is possible to prevent the air from being mixed into the water in the storage tank 1 and rapidly expanding.

Japanese Patent Publication No.55-40249 International Publication No. 2007/116882 Pamphlet

In the conventional fryer as described above, the rotation of the oil layer and water layer and the circulation of water are used to prevent deterioration of the cooking oil and maintain the cleanliness of the oil so that it can withstand long-term use. However, foreign substances such as fine fried residue, fats and oils, dust, and oxides contained in the water flowing inside may adhere to the inner wall of the filtered water tank during long-term use.
For this reason, in the said fryer, it was necessary to clean the inside of a filtration water tank after completion | finish of cooking once every several days.

  In addition, it is necessary to remove the filtered water tank and wash it once every few days as described above. Therefore, when reassembling after cleaning, air does not enter and does not leak. It was necessary to pay attention to the holding, and it was difficult to install. Furthermore, the sealability of the assembly portion may be impaired due to wear or the like due to long-term use.

  The present invention has been made to solve the above-mentioned problems, and provides a fryer equipped with a filtration water tank that is free of dirt on the inner wall, can save the trouble of cleaning, and can be maintenance-free. Is an issue. Another object is to provide a flyer that can reduce the manufacturing cost and at the same time is hard to break and has few failures.

In the present invention, means for solving the above problems are as follows.
1st invention has the storage tank which stores in two upper and lower layers the water layer which touches the oil layer for cooking, and a boundary surface, the heater arrange | positioned in this oil layer, and the pump in a path | route, The said storage tank A circular pipe that draws water from the bottom of the water layer and returns it to the aqueous layer from the supply port on the side wall of the storage tank, and a circular can that is provided in the path of the circulation pipe and has a top plate and a bottom plate The filtered water tank is provided with an inlet for feeding water in the horizontal eccentric direction from the side wall thereof, and an outlet for sending water from the side wall above the inlet. A horizontal filter is provided that rotates the water in a spiral shape and bisects the inside vertically between the inlet and the outlet.

  In the fryer according to the second invention, the filtration water tank is provided with a waste water pipe capable of discharging water containing foreign substances at the lower portion thereof, and connected to the top plate to supply new water into the filtration water tank. It is characterized by having a water supply pipe that can be used.

  A fryer according to a third aspect of the present invention has an extension part that extends the lower part of the filtered water tank to one side or below, and provides the inlet on the side wall at a position higher than the extension part, and the extension part has the above-mentioned It is characterized by connecting a wastewater pipe.

  In the fryer according to a fourth aspect of the present invention, the filtered water tank has a water supply pipe and a water supply pipe connected to the top plate, and air and water are supplied to and discharged from the filtered water tank so that the water level is higher than the outlet. It is characterized by being held upward.

  The fryer according to the fifth invention sets the height of the upper end of the air supply / exhaust pipe to be substantially equal to the height of the oil level of the storage tank, and the water in the filtered water tank overflowed from the upper end of the air supply / exhaust pipe, It is characterized by being discarded by a drain pipe having an air vent.

  The flyer according to a sixth aspect of the invention is characterized in that the pump of the circulation pipe is installed in a path from the outlet of the filtered water tank to the supply port of the storage tank.

According to the first invention, the filtered water tank is provided with an inlet for feeding water in the direction of horizontal eccentricity from the side wall thereof and an outlet for sending water from the side wall above the inlet, so that the water inside is horizontally disposed. By rotating in a vortex direction, a vortex water flow is always generated, and it is difficult for foreign matter to adhere to the inner wall of the filtered water tank.
In addition, by providing a horizontal filter that bisects the interior in the middle between the inlet and the outlet, the fried residue is separated and exposed to a swirling water stream, thereby clogging the filter. It is difficult to raise and efficiently removes fried residue and returns filtered clean water to the storage tank.

According to the second invention, the filtered water tank is provided with a waste water pipe capable of discharging water containing foreign substances at the lower part thereof, and is connected to the top plate to supply new water into the filtered water tank. By providing a water supply pipe that can be removed, it is possible to easily remove foreign substances and replace water in the filtered water tank without removing the filtered water tank. In addition, it is possible to perform washing by flushing fried debris or the like causing clogging of the filter with the momentum of water poured when water is supplied from the water supply pipe.
The cleaning effect at the time of water replacement and the effect of the swirling rotation of water eliminates the need for cleaning after removing the filtration water tank, making it maintenance-free, and eliminating the need for attachment / detachment, making it difficult to break. Less flyers.

  According to the third invention, the lower part of the filtered water tank is extended to one side or downward, the inlet is provided above the extended part, and the waste water pipe is connected to the extended part. Thus, the frying waste contained in the water flowing into the filtered water tank can be automatically settled and stored in the expanded portion. As a result, the water from the middle to the upper part of the filtration water tank is almost free from fried residue and the like, further preventing clogging of the filter and maintaining the filtration performance for a long time. Further, when the water is replaced by the waste water pipe, since the fried residue and the like are collected in the expanded portion, the foreign matter can be easily removed without leaving the fried residue and the like in the filtered water tank.

According to a fourth aspect of the present invention, the filtered water tank is connected to the top plate with an air supply / exhaust pipe and a water supply pipe, and air and water are supplied to and discharged from the filtered water tank so that the water level is higher than the outlet. By holding in, the air can be prevented from being mixed into the circulation pipe from the outlet of the filtered water tank, and the oil can be prevented from entering the storage tank and causing oil splashing during cooking. Further, even when air bubbles are mixed into the water in the filtered water tank, it can be discharged to the outside from the supply / exhaust pipe. Thereby, it is not necessary to provide a conventional defoaming water tank independently, and manufacturing costs such as material costs can be reduced.
In addition, even when water is replaced, smooth replacement can be performed by supplying and discharging air into the filtered water tank through the supply / exhaust pipe.

According to the fifth aspect of the present invention, the height of the upper end of the air supply / exhaust pipe is set to be substantially equal to the height of the oil level of the storage tank, so that even if excessive water is supplied to the filtered water tank, It is possible to realize a fryer that is drained and can be safely cooked by appropriately maintaining the water level and oil level of the storage tank. At that time, since the water in the filtered water tank overflowed from the upper end of the air supply / exhaust pipe is discarded by the drain pipe having the air vent, it is excessively drained by the siphon phenomenon between the air supply / exhaust pipe and the drain pipe. The excess water discharged from the air supply / exhaust pipe can be discarded by the air vent.
In particular, if the drain pipe is set thicker than the air supply / exhaust pipe, excess water can be discarded more smoothly while preventing siphoning.

  According to 6th invention, the pump of the said circulation pipe is installed in the path | route from the exit of the said filtered water tank to the supply port of the said storage tank, The clean water filtered with the filtered water tank passes a pump. As a result, it is possible to prevent the fried residue and foods from adhering to or clogging the pump.

It is explanatory drawing which shows the fryer concerning embodiment of this invention. It is perspective explanatory drawing which shows the attachment state of a filtration water tank. It is a figure which shows a filtration water tank, (a) is a top view, (b) is a front view. It is a notch perspective explanatory drawing which shows the attachment state of the filtration water tank concerning another aspect of this invention. It is explanatory drawing which shows the conventional flyer. It is a side view which shows the conventional foreign material removal apparatus of a fryer.

Hereinafter, a fryer according to an embodiment of the present invention will be described.
In the following, a circular can or cylinder means a can or cylinder having a columnar space inside, and the outer shape is not limited.
As shown in FIG. 1, the fryer has a storage tank 1 which is formed in a square cylinder shape with an upper part being convex and a lower part having a downwardly convex quadrangular pyramid shape, and having a water inlet 1a at the bottom part.
In this storage tank 1, an oil layer 2 for frying food and a water layer 3 for purifying oil by taking in the fried residue in the oil below the oil layer can be stored in two upper and lower layers.

A heater 4 for heating oil is provided in the oil layer of the storage tank 1.
The heater 4 is disposed at a substantially central portion of the height of the oil layer 2, and when the oil layer 2 is heated, two layers of the oil high temperature portion 2 a and the oil low temperature portion 2 b are bordered slightly below the position of the heater 4. It is formed.
As a result, in the storage tank 1, three layers of a water layer 3, an oil low temperature portion 2b, and an oil high temperature portion 2a are formed in order from the bottom.

In the oil high temperature part 2a, the foodstuff is put in a basket formed directly or by a wire mesh or the like and is poured from above and fried at a predetermined temperature.
The low temperature oil part 2b serves as a temperature buffer part between the high temperature oil part 2a and the water layer 3, and also serves as a supply source of new undegraded oil.
The water layer 3 plays the role of a sedimentation layer that deposits and accumulates foreign matter such as fried debris that is produced during cooking of deep-fried food ingredients, and also rotates the water horizontally to wash the oil at the boundary and circulates the water. Thus, it plays a role such as temperature adjustment of the oil layer 2.

The water in the water layer 3 flows into the filtered water tank 7 through the circulation pipe 6 from the water inlet 1a at the bottom of the storage tank 1 through the circulation pipe 6 by the suction force of the pump 5, and is filtered by the filter 7a provided in the filtered water tank 7. It is filtered and returned from the filtered water tank 7 through the circulation pipe 6 to the storage tank 1 through the supply port 1c (FIG. 1). The location where the pump 5 is disposed in the circulation pipe 6 is preferably in the path from the outlet 7 c of the filtered water tank 7 to the supply port 1 c of the storage tank 1. If it arrange | positions in this way, in the filtered water tank 7, since the water which removed the fried dregs containing oil, fine garbage, etc. passes the pump 5, fried dregs and garbage will adhere to the pump 5, or it will be clogged. Can be prevented from occurring.
A discharge pipe for discharging water from the storage tank 1 branches from the circulation pipe 6, and an electromagnetic valve 1 b that can be opened and closed is provided in the discharge pipe. The discharge pipe reaches a waste receiving tray 8 provided with a net or a filter paper, and the waste receiving tray 8 can separate and discard waste water and fried waste.

When the filtered water is returned to the storage tank 1, the water layer 3 is discharged from the supply port 1 c provided on the side wall of the water layer 3 in the storage tank 1 toward the substantially horizontal direction along the adjacent side wall. Rotate horizontally in a spiral.
As the water layer 3 rotates, the oil low temperature part 2b located immediately above and in contact with the water layer 3 starts to rotate together, and the oil high temperature part 2a above the oil low temperature part 2b starts to turn slightly.

The amount of oil that contacts the surface of the heater 4 is increased by the horizontal rotation of the oil layer 2, and the heat exchange efficiency can be increased. For this reason, the oil temperature at the time of cooking interruption can be set low, the oil temperature can be rapidly raised at the time of cooking, temperature unevenness can be eliminated, and deterioration of the oil accompanying heating can be suppressed.
Further, since the heat exchange efficiency is high, the surface temperature of the heater 4 necessary for cooking while maintaining a predetermined oil temperature (for example, 170 ° C.) can be kept lower than before, and the oil around the heater 4 can be reduced. Can be reduced.
In addition, by actively bringing oil and water into contact with each other at the boundary between oil and water, not only deep-fried but also liquid components from food materials, water-soluble oxides generated by oil hydrolysis and thermal oxidation, etc. The deterioration of cooking oil can be greatly suppressed.

As shown in FIGS. 2 and 3, the filtration water tank 7 is formed in a circular can shape having a top plate and a bottom plate on an upright cylindrical side wall, and an inlet 7b is provided at the lower part of the side wall, and the upper part of the side wall is provided with the inlet 7b. An outlet 7c is provided. The circulation pipe 6 extending from the water suction port 1a is connected to the inlet 7b so that water flows in the (horizontal) eccentric direction of the filtered water tank 7 (FIG. 3B). Similarly, the outlet 7 c of the filtered water tank 7 and the supply port 1 c of the storage tank 1 are connected by a circulation pipe 6.
Further, between the inlet 7b and the outlet 7c of the filtered water tank 7, a filter 7a having a shape equal to the horizontal section of the filtered water tank 7 is horizontally arranged with a 0.7 mm mesh made of stainless steel to separate the frying residue and the like. The bottom of the filtered water tank 7 can be submerged.

As shown in FIGS. 2 and 3, the filtered water tank 7 is composed of a transparent acrylic cylinder 7e, and a resin top plate member 7f and a bottom plate member 7g that are fitted into both ends of the cylinder 7e.
Since the cylindrical body 7e is formed in a cylindrical shape using transparent acrylic, the amount of fried debris accumulated in the filtered water tank 7 is visually recognized from the outside even while water is circulated during cooking. be able to.

  The top plate member 7f is composed of an upper covered cylindrical portion, a lower thick cylindrical portion, and an intermediate step portion, and the lower end portion of the thick cylindrical portion is formed in a thin cylindrical shape so that it can be fitted into the cylindrical body 7e. Yes. A horizontal disk-shaped filter 7a is attached to the tip of the lower end portion so as to close the opening. A hole for connecting the water supply pipe 10 is drilled in the center of the lid portion of the covered cylindrical portion of the top plate member 7f, and a hole for connecting the air supply / exhaust pipe 12 is also drilled outside thereof. . In addition, an outlet 7c for connecting the circulation pipe 6 and a sensor hole 7j for attaching the water level sensor 11 are formed in the side wall portion.

The bottom plate member 7g is formed in a bottomed cylinder, and the upper end portion is formed in a thin cylindrical shape so as to be fitted in the cylindrical body 7e. Further, an inlet 7b for connecting the circulation pipe 6 is drilled in the side wall portion in the horizontal eccentric direction, and a drain hole 7d for connecting the foreign matter removing pipe 9 is drilled below the inlet 7b. .
In addition, O-rings 7h are attached to the outer peripheries of the inner fitting portions of the top plate member 7f and the bottom plate member 7g fitted in the cylindrical body 7e, respectively, so that water leakage does not occur from the inner fitting portion on the inner wall of the cylindrical body 7e. It abuts (FIG. 3B).

As a result, the water flowing from the storage tank 1 into the lower part of the filtered water tank 7 generates a water flow that rotates in a spiral in the filtered water tank 7, and when the permeated filter 7 a passes through the frying residue, the filtered water is removed. The water is returned to the water layer 3 in the storage tank 1 from the upper outlet 7c. In this way, the shape of the filtered water tank is made into a circular can shape, and water is not trapped by constantly generating a swirling water flow. Therefore, it is possible to make it difficult for foreign matter to adhere to the inner wall of the filtered water tank 7 and to prevent the dirt from adhering. A water tank 7 can be realized.
Further, since the water is exposed to a swirling water stream when the water passes through the filter 7a from the bottom to the top, the filter 7a is not easily clogged and is efficiently and continuously fried. Can be removed.
As a result, it is possible to efficiently remove fried residue etc. in the filtered water tank 7 outside the storage tank 1 and keep the water layer 3 in the storage tank 1 clean, so that the fryer can be used continuously for a long time. it can.

  Further, a drain hole 7d is provided in the lower portion of the side wall of the filtered water tank 7, and a foreign matter removing pipe 9 as a waste water pipe is communicated with the drain hole 7d. By opening the electromagnetic valve 9a, the upstream of the filter 7a of the filtered water tank 7 is provided. The fried debris and the like accumulated on the side can be discarded together with water (FIGS. 1 and 3). In addition, the water supply pipe 10 connected to the water supply is connected to the top plate of the filtered water tank 7 so that new tap water can be supplied in the form of a shower after disposal of fried waste and the like.

In order to remove foreign substances and replace water, the pump 5 is first stopped after cooking, the valve (not shown) in the circulation pipe 6 is closed, and the like between the storage tank 1 and the filtered water tank 7. Prevent water from coming and going.
Next, the electromagnetic valve 9a provided in the foreign matter removing pipe 9 is opened, and the fried residue and the like accumulated in the filtered water tank 7 are discharged together with water. At the outlet of the foreign substance removal pipe 9, a waste receiving tray 8 having a mesh basket 8a having a mesh of the same level as the filter 7a or a filter paper is arranged so that the fried residue etc. can be separated and drained by draining water. It has become.

Then, after closing the electromagnetic valve 9a of the foreign matter removing pipe 9, new tap water is supplied from the water supply pipe 10 to the filtered water tank 7, and the circulation of water is resumed when a sufficient amount of water is supplied.
As needed, you may provide the control apparatus which performs replacement | exchange of water and adjustment of water amount automatically based on the signal from the water level sensor 11 attached in the filtration water tank 7. FIG. Moreover, you may comprise so that a foreign material removal pipe 9 and the water supply pipe 10 may be provided with a flow sensor, and water may be replaced | exchanged automatically.

Thereby, removal of the foreign material in the filtration water tank 7 and replacement of water can be performed without removing the filtration water tank 7.
In addition, by connecting the water supply pipe 10 to the top plate of the filtered water tank 7, the dirt adhering to the filter 7a and the inner wall of the filtered water tank 7 can be washed away with the momentum of the poured water. Can also be done. It is desirable to allow new water to be poured into the shower as this effect can be exerted over a wide range.

  The cleaning effect at the time of water replacement and the effect of water swirling eliminates the need for periodic cleaning of the filtered water tank 7 and makes it maintenance-free. Less flyers.

  Moreover, as shown in FIG. 1, the water level sensor 11 is provided in the side wall higher than the outlet 7c of the filtered water tank 7, the water level is monitored, and the water level is managed to be higher than the outlet 7c. Further, at the upper end of the filtered water tank 7, the air supply / exhaust pipe 12 is connected to the top plate so as to communicate with the inside of the filtered water tank 7. The upper end of the air supply / exhaust pipe 12 is open to the outside, and even if air is mixed into the filtered water tank 7, the air is exhausted to the outside and the air is mixed into the storage tank 1 via the circulation pipe 6. To prevent.

By such an apparatus, it can prevent that air mixes into the circulation pipe 6 from the exit 7c of the filtered water tank 7, and it can prevent that air enters the storage tank 1 and produces oil splash during cooking. Further, even when bubbles are mixed in the water in the filtered water tank 7, it can be discharged to the outside from the air supply / exhaust pipe 12.
Thereby, it becomes unnecessary to provide an antifoaming water tank independently, and manufacturing costs, such as material cost, can be reduced.
In addition, when water is replaced, the air can be smoothly replaced by supplying and discharging air to / from the filtered water tank 7 through the air supply / exhaust pipe 12.

Moreover, in the conventional fryer, when the water is excessively supplied to the filtration water tank 7 when the water is replaced, the water level of the storage tank 1 may rise when the circulation pipe 6 is opened and the water circulation is resumed. As a result, there is a risk that the oil in the high temperature oil portion 2 a overflows from the storage tank 1 or the water layer 3 touches the heater 4 to cause bumping.
As shown in FIG. 1, if the height of the upper end of the air supply / exhaust pipe 12 is set to be equal to the oil level of the storage tank 1 (actually, since the specific gravity of the oil is light, the air supply / exhaust pipe 12 is installed slightly lower) Even if excessive water is supplied to the water tank 7 or the storage tank 1, the excess water is discharged from the supply / exhaust pipe 12. Thereby, the fryer which can hold | maintain the water level of the storage tank 1 and the height of an oil level appropriately, and can cook safely can be provided.

At that time, when the upper end portion of the air supply / exhaust pipe 12 is communicated with the cistern 14 opened upward, and further the drain pipe 15 for draining the waste receiving tray 8 is communicated with the cistern 14, the water in the filtered water tank 7 is discharged. Even if discharged from the upper end of the air supply / exhaust pipe 12, water can be discarded without fouling the fryer.
For example, as shown in FIG. 2, a cistern 14 having a shape in which the upper part of the box is opened is arranged so that the upper end of the supply / exhaust pipe 12 communicates with the bottom of the cistern 14, and is fixed to the supply / exhaust pipe 12. A drainage pipe 15 communicates with the bottom of the cistern 14, and excess water discharged from the air supply / exhaust pipe 12 is carried to the waste receiving tray 8 by the drainage pipe 15 and discarded.
If the air supply / exhaust pipe 12 and the drain pipe 15 are connected and connected in a sealed state, a siphon phenomenon occurs and the water in the filtered water tank 7 is excessively discharged, but the cistern 14 serves as an air vent. Therefore, only excess water can be discarded.
Since the siphon phenomenon can also be prevented by forming the drain pipe 15 thicker than the air supply / exhaust pipe 12 as shown in FIG. 2, in that case, even if the upper part of the cistern 14 is sealed with a lid or the like, Only excess water can be discarded from the drain pipe 15.

  Moreover, in embodiment of this invention, although the inlet 7b was provided in the side wall lower part of the filtration water tank 7, if it is lower than the filter 7a, you may provide an inlet in the position of the upper part from the center part of the side wall. In this case, since the water flow at the bottom of the filtered water tank 7 becomes gentle and fried debris and the like are likely to settle, removal of the fried debris and the like by the foreign substance removal pipe 9 can be easily performed.

<Another aspect>
As another aspect, it is good also as a structure which protrudes the lower part of the circular can-shaped filtration water tank 7 to one side, and sediments fried residue etc. and is easy to isolate | separate.
In this another aspect, as shown in FIG. 4, the expansion part 7i which expands the bottom-plate member 7g which comprises the filtration water tank 7 to one side, and stores a fried residue etc. is provided.

In such a bottom plate member 7g of the filtered water tank 7, the bottomed cylindrical side wall and the bottom plate protrude to one side, a top plate is provided on this, and an extended portion 7i, which is a space expanded by these, is provided. ing. The extended portion 7i is formed in a horizontally placed rectangular tube shape, and the filtered water tank 7 as a whole is L-shaped (substantially boots shaped) when viewed from the side.
Similar to the above-described embodiment, the upper end portion of the bottom plate member 7g is formed so as to be fitted in the cylindrical body 7e. Further, a drain hole 7d for connecting the foreign substance removal pipe 9 is formed in the side wall on the distal end side of the expanded portion 7i.
Moreover, instead of projecting the lower part of the filtered water tank 7 to one side, the extended part may be formed by projecting a part of the bottom plate of the filtered water tank 7 downward.

In this other aspect, the inlet 7b is drilled in the horizontal eccentric direction in the cylindrical body 7e arranged at a position higher than the expansion portion 7i, and the water flowing in from the circulation pipe 6 is rotated in a spiral shape. ing.
Other configurations of the filtered water tank 7 and the fryer are the same as those in the above embodiment.

  In this other aspect, an expanded portion 7i is provided that expands the lower portion of the filtered water tank 7 to one side and accumulates frying waste and the like, and the inlet 7b is provided above the expanded portion 7i and a foreign substance is provided in the expanded portion 7i. By connecting the removal pipe 9, the water flow becomes gentle in the vicinity of the bottom of the filtered water tank 7, so that the fried debris contained in the water that has flowed into the filtered water tank 7 is gradually submerged after being squeezed out by the filter 7 a, In particular, it is possible to automatically accumulate fried waste etc. in the expanded portion 7i where the water flow is gentle. As a result, the water from the middle to the upper part of the filtered water tank 7 hardly contains fried residue and the like, further preventing clogging of the filter 7a and maintaining the filtration performance for a long time. Further, when the electromagnetic valve 9a of the foreign matter removing pipe 9 is opened and water is replaced, since the fried residue etc. is collected in the expanded portion 7i, the foreign matter can be easily removed without leaving the fried residue etc. in the filtered water tank 7. It can be performed.

DESCRIPTION OF SYMBOLS 1 Storage tank 1a Water inlet 1b Solenoid valve 1c Supply port 2 Oil layer 2a Oil high temperature part 2b Oil low temperature part 3 Water layer 4 Heater 5 Pump 6 Circulation pipe 7 Filtration water tank 7a Filter 7b Inlet 7c Outlet 7d Drain hole 7e Cylindrical member 7f Top plate member 7 g Bottom plate member 7 h O-ring 7 i Expanded portion 7 j Sensor hole 8 Waste receiving tray 8 a Netting 9 Foreign matter removal pipe 9 a Solenoid valve 10 Water supply pipe 11 Water level sensor 12 Air supply / exhaust pipe 13 Defoaming water tank 13 a Internal pressure adjusting means 14 Sistern 15 Drain pipe

Claims (6)

A storage tank for storing a cooking oil layer and a water layer in contact with the boundary surface in two upper and lower layers;
A heater disposed in the oil layer;
A circulation pipe having a pump in the path, sucking the water of the water layer from the bottom portion of the storage tank and returning it to the water layer from the supply port of the storage tank side wall;
A fryer provided in the path of the circulation pipe and having a circular can-shaped filtration water tank having a top plate and a bottom plate and standing upright,
The filtered water tank is provided with an inlet for sending water in the direction of horizontal eccentricity from the side wall thereof, and an outlet for sending water from the side wall above the inlet to rotate the internal water in a spiral manner in the horizontal direction. A fryer characterized by providing a horizontal filter that bisects the interior in the middle between the inlet and the outlet.   The filtered water tank is provided with a waste water pipe capable of discharging water containing foreign substances at the lower part thereof, and a water supply pipe connected to the top plate and capable of supplying new water into the filtered water tank. The flyer according to claim 1.   It has an extension part which extended the lower end part of the filtered water tank to one side or below, and provided the inlet to the side wall at a position higher than the extension part, and connected the waste water pipe to the extension part. The flyer according to claim 2.   The filtered water tank is characterized in that a water supply / exhaust pipe and a water supply pipe are connected to the top plate, and air and water are supplied / discharged in the filtered water tank and the water level is maintained above the outlet. The flyer according to claim 1.   The height of the upper end of the air supply / exhaust pipe is set substantially equal to the height of the oil level of the storage tank, and the water in the filtered water tank overflowing from the upper end of the air supply / exhaust pipe is discarded by a drain pipe having an air vent. The flyer according to claim 4, wherein:   2. The fryer according to claim 1, wherein the pump of the circulation pipe is installed in a path from the outlet of the filtered water tank to the supply port of the storage tank.

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