JP5433456B2 - Flyer - Google Patents

Description

  The present invention relates to a fryer that stores cooking oil in a storage tank and heats the oil layer for cooking, and more particularly to a fryer that can also be applied to a large fryer apparatus used in factory facilities and the like.

Some conventional fryer stores cooking oil in a storage tank, and heats the oil layer with a heater provided in an intermediate portion of the oil layer to perform fried cooking.
In addition, there is a type in which a water layer is provided in contact with a lower boundary of the oil layer in the storage tank, and the oil layer is heated by a heater provided in an intermediate portion of the oil layer to perform fried cooking (Patent Document 1). In such a fryer, the frying residue and the like (of which the specific gravity is greater than that of water) generated in deep-fried cooking is submerged and separated in the water layer to maintain the cleanliness of the oil.

Further, Patent Document 2 includes a water circulation pipe that sucks water from the water layer to the outside of the storage tank and returns the water layer to the water layer again from a supply port provided in the storage tank side wall in a fryer having an oil layer and a water layer. And an oil layer that can be rotated horizontally in a spiral.
In such a fryer, the amount of oil in contact with the heater surface can be increased by the horizontal rotation of the oil layer and the heat exchange efficiency can be increased. Therefore, cooking can be performed with the heater set temperature lower than that of the conventional fryer. 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.

Moreover, the fryer of patent document 2 has arrange | positioned the filtration water tank provided with the filter in the path | route of a water circulation pipe. This filtered water tank is equipped with a filter that bisects the inside, and the water that flows through the water circulation pipe and flows into the upstream side of the filter passes through the filter and is returned to the storage tank through the water circulation pipe. Impurities such as debris are separated and sink to the bottom on the upstream side of the filter.
Thereby, since impurities can be separated from the water in the water layer and returned to the water layer again, the water layer of the storage tank can be kept clean. Therefore, the flyer can be used effectively for a long time continuously.

Further, the filtered water tank is provided with a foreign substance removing device capable of removing impurities and replacing water without removing the filtered water tank itself from the fryer and cleaning it. This foreign matter removing apparatus is composed of a foreign matter removing pipe connected to the filter upstream side of the filtered water tank and a water supply pipe connected to the filter downstream side of the filtered water tank.
After stopping the circulation of water between the water layer of the storage tank and the filtration water tank so that the water does not come and go, open the foreign substance removal pipe on the upstream side of the filter to discharge impurities together with the water, and supply water from the water supply pipe By doing so, it is possible to remove impurities and replace water without removing the filtered water tank. Further, since the supplied water permeates the filter in the reverse direction from the downstream side, it is possible to prevent the filter from being clogged by pushing away impurities adhering to the filter.

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

In the conventional fryer described in Patent Document 2, the rotation of the oil layer and the water layer and the circulation of water are utilized to prevent the cooking oil from deteriorating and to maintain its cleanness so that it can withstand long-term use. Can be.
On the other hand, since impurities such as fried residue collected in the filtered water tank are discarded together with water by the foreign matter removing device, there is a drawback that a large amount of water is consumed.
Further, when the impurities are automatically discharged from the filtered water tank by the foreign substance removing device, there is a problem that even the undegraded oil adhering to the fried residue is discharged together. Furthermore, the impurities recovered by the foreign substance removal device are solids such as deep-fried debris, a mixture of oil and water that adheres, and are difficult to reuse. It was the cause.

  The present invention has been made to solve the above problems, and provides a fryer capable of separating impurities that have been discarded by a conventional fryer into water, oil, fried residue, etc., and reusing them. This is the issue.

In the present invention, means for solving the above problems are as follows.
1st invention is a fryer which has the storage tank which stores cooking oil, and the heater arrange | positioned in this storage tank, Comprising: By rotation of the rotary body which accommodated oil, water and sludge are made into three layers from oil. The centrifuge separates the oil and water by the increased pressure and discharges the sludge accumulated on the inner wall of the rotating body and discharges the oil separated by the centrifuge. An oil tank for storing the oil and a pump in the path, sucking oil from the storage tank and flowing it into the centrifuge, and passing the separated oil to the storage tank via the oil tank An oil circulation pipe to be returned, a water tank for temporarily storing the water separated by the centrifuge, and a waste receiving container for receiving sludge separated by the centrifuge are provided.

  A second invention is a fryer having a storage tank that stores an oil layer of cooking oil and a water layer in contact with the oil layer in two upper and lower layers, and a heater disposed in the storage tank. The oil and sludge are centrifuged in three layers from the water by the rotation of the contained rotating body, and the water and oil are discharged by the increased pressure, and the sludge accumulated on the inner wall of the rotating body is separated and discharged. A centrifuge, a water tank for temporarily storing water separated by the centrifuge, a pump in the path, and sucking the water in the aqueous layer from the storage tank to the centrifuge A water circulation pipe that returns the separated water to the water layer through the water tank, an oil tank that temporarily stores the oil separated by the centrifuge, and a pump in the path The centrifuge Via Luo the oil tank, characterized in that the separated oil is provided with an oil return pipe for returning to said oil layer, and a scrap receptacle receiving the sludge separated by the centrifugal separator.

  In a third aspect of the invention, the water is filtered by a storage tank that stores an oil layer of cooking oil and a water layer in contact with the oil layer in two upper and lower layers, a heater disposed in the storage tank, and an internal filter. A filtered water tank having a pump in the path, and sucking water from the water tank into the filtered water tank and flowing the filtered water in the filtered water tank from the supply port on the side wall of the water tank. A fryer having a water circulation pipe to return to the waste water and a waste system for discarding the impurities removed in the filtered water tank, and disposed in the waste system, and the impurities are sludge and water by rotation of the rotating body containing the impurities. The centrifuge is separated into three layers with oil, and the water and oil are discharged by the increased pressure, and the sludge accumulated on the inner wall of the rotating body is separated and discharged, and the centrifugal separator A water tank that temporarily stores the water separated in step, and a pump in the path, and the separated water is passed from the centrifuge through the water tank to the filtered water tank or the water layer. A water return pipe to be returned, an oil tank for temporarily storing the oil separated by the centrifuge, and a pump in the path, and separated from the centrifuge through the oil tank. An oil return pipe for returning oil to the oil layer and a waste receiving container for receiving sludge separated by the centrifugal separator are provided.

  A fryer according to a fourth aspect of the present invention sucks the oil in the oil layer from the storage tank, and in a centrifuge provided separately or separately from the centrifuge, removes water and sludge from the oil by rotation of the rotating body. It is characterized by centrifuging into three layers and returning the separated oil to the oil layer.

  A flyer according to a fifth aspect of the present invention includes a reverse osmosis membrane that removes salt from permeated water in the path of the water return pipe, and a pressure unit that pressurizes the water to permeate the reverse osmosis membrane, A concentrated water disposal system for discharging concentrated water with a high salinity accumulated on the upstream side of the reverse osmosis membrane is disposed.

  A fryer according to a sixth invention is characterized in that the reverse osmosis membrane removes one or more of dioxins, nitrite nitrogen, nitrate nitrogen, trihalomethane, and acrylamide from water that passes through the reverse osmosis membrane. .

  According to the first aspect of the present invention, water and sludge are centrifuged in three layers from the oil by rotation of the rotating body containing oil, and the oil and water are discharged by the increased pressure, respectively, and the inner wall of the rotating body A centrifuge that separates and discharges the sludge deposited on the oil, an oil tank that temporarily stores the oil separated by the centrifuge, and a pump in the path that sucks the oil from the storage tank. And an oil circulation pipe for allowing the separated oil to return to the storage tank via the oil tank, and a water tank for temporarily storing the water separated by the centrifuge And a waste container for receiving the sludge separated by the centrifuge, the oil in the storage tank is sucked into the centrifuge to separate the contained water and sludge, and the separated oil is removed from the oil layer. Back to reuse Rutotomoni, water and sludge can be recycled and stored, respectively. For this reason, while maintaining an oil layer clean, the usage-amount of oil can be saved and the quantity of the waste discharged from a fryer can be reduced.

  According to the second invention, the oil and sludge are centrifuged from the water in three layers by the rotation of the rotating body containing water, and the water and the oil are respectively discharged by the increased pressure, and the inner wall of the rotating body A centrifuge that separates and discharges the sludge deposited on the water, a water tank that temporarily stores the water separated by the centrifuge, and a pump in the path, from the storage tank to the water layer. The water is sucked into the centrifuge and the water circulation pipe for returning the separated water to the water layer via the water tank and the oil separated by the centrifuge are temporarily used. The oil tank to be stored, the pump in the path, the oil return pipe for returning the separated oil to the oil layer from the centrifuge through the oil tank, and the centrifuge Receiving sludge receiving sludge The water in the water layer is sucked into the centrifuge to separate the contained oil and sludge, the separated oil is returned to the oil layer and reused, and the separated water is reused as water. It can be recycled back to the bed, saving oil and water usage. Moreover, the separated sludge can be stored and reused, and the amount of waste discharged from the fryer can be reduced.

According to the third invention, in the fryer having a disposal system for discarding impurities removed in the filtered water tank, the impurities are disposed in the disposal system, and the impurities are sludge, water, oil and oil by rotation of the rotating body containing the impurities. The centrifuge is separated into three layers, and the water and oil are discharged by the increased pressure, and the sludge accumulated on the inner wall of the rotating body is separated and discharged. A water tank for temporarily storing water and a pump in the path, and returning the separated water from the centrifuge to the filtered water tank or the water layer via the water tank A pipe, an oil tank that temporarily stores the oil separated by the centrifuge, and a pump in the path, and the separated oil is removed from the centrifuge through the oil tank. Oil reservoir By providing an oil return pipe to be returned and a waste receiving container that receives the sludge separated by the centrifuge, the centrifuge is used to suck impurities stored in the filtration water tank and separate the oil and water contained therein. In addition, the separated oil can be returned to the oil layer and reused, and the separated water can be returned to the filtration water tank or the water layer for reuse, thereby reducing the amount of oil and water used. Moreover, the separated sludge can be stored and reused, and the amount of waste discharged from the fryer can be reduced.
Furthermore, since impurities generated in the oil layer are collected in the filtered water tank at any time, fried cooking can be performed while the oil layer in the storage tank is always kept clean even while impurities are accumulated.

  According to the fourth aspect of the present invention, the oil in the oil layer is sucked from the storage tank, and water and sludge are separated from the oil by rotation of the rotating body in a centrifuge that is the same as or separate from the centrifuge. The oil is separated not only into the water layer by the centrifuge, but also the oil in the oil layer and the cleanliness of the oil layer and the water layer. It can be maintained more.

  According to the fifth invention, in the path of the water return pipe, a reverse osmosis membrane for removing salt from permeated water, a pressure means for pressurizing the water to permeate the reverse osmosis membrane, and the above By locating a concentrated water disposal system that discharges high-concentrated concentrated water collected upstream of the reverse osmosis membrane, even if the water in the water layer contains salt depending on the type of food, it can permeate the reverse osmosis membrane. Thus, the salt content can be removed, and much of the water purified by the centrifuge can be returned to the filtered water tank or water layer for reuse.

  According to the sixth invention, the reverse osmosis membrane removes one or more of dioxins, nitrite nitrogen, nitrate nitrogen, trihalomethane, and acrylamide from the water that permeates the reverse osmosis membrane, whereby the reverse osmosis membrane Even if the water that has passed through is used around a kitchen such as a water layer of a fryer, adverse effects on the human body can be suppressed.

1 is a flyer according to a first embodiment of the present invention. It is a fryer which concerns on 2nd Embodiment of this invention. It is a fryer which concerns on 3rd Embodiment of this invention. It is a fryer apparatus which concerns on 4th Embodiment of this invention.

Hereinafter, a fryer according to an embodiment of the present invention will be described.
As shown in FIG. 1, the flyer according to the first embodiment includes a storage tank 1 that stores oil and fries food, and a heater 4 that heats oil is disposed at an intermediate position of the storage tank 1. The storage tank 1 is formed in a quadrangular pyramid shape with an upper portion being a square cylinder and a lower portion projecting downward, and a discharge port 1a for discharging oil, fried residue, etc. is opened at the bottom. A discharge pipe 5 for discharging oil communicates with the discharge port 1a. The discharge pipe 5 is provided with a cock 5a so that it can be manually opened and closed.

Oil is stored in the storage tank 1 to form an oil layer 2, and when the heater 4 is energized and heated, an oil high temperature portion 2 a is formed at the upper part of the oil layer, and the oil layer is formed at the lower part of the oil layer. The low temperature part 2b is formed.
In the oil high-temperature part 2a, the foodstuff stored in the basket etc. which were shape | molded with the wire mesh is thrown in, and it is fried at predetermined temperature.
The oil low temperature part 2b receives the fried residue etc. which generate | occur | produced in the oil high temperature part 2a, and supplies the oil which has not deteriorated to the oil high temperature part 2a suitably.

An oil circulation pipe 6 branches and extends from the discharge pipe 5 and is connected to the centrifugal separator 7 and is opened to the storage tank side wall through the oil tank 8 from the oil separation port 7d of the centrifugal separator 7. It is connected to the return port 1b. In the path of the oil circulation pipe 6, an electromagnetic valve 12a, a centrifuge 7, an oil tank 8, and a pump 13a are sequentially arranged.
When the solenoid valve 12a is opened after the fried cooking is temporarily stopped or finished, oil containing solid impurities such as fried residue and moisture flowing out from the food material flows into the centrifuge 7 through the oil circulation pipe 6 and is centrifuged. The oil separated by the machine 7 is stored in the oil tank 8 and returned to the storage tank 1 by the suction force of the pump 13a.

The centrifuge 7 includes a case 7a, a rotating body 7b that is a container that holds oil and rotates inside the case 7a, and a rotating plate that is provided inside the rotating body 7b and promotes centrifugal separation of the oil. 7c, and separates water and sludge from the oil flowing in from the storage tank 1.
In this centrifuge 7, oil mixed with solid impurities and moisture in the storage tank 1 is introduced by an oil circulation pipe 6 communicating with the inside of the rotating body 7b, and the rotating body 7b and the rotating plate 7c are driven by the power of the motor. , Due to the difference in specific gravity, solid impurities are accumulated on the inner wall of the rotating body 7b as sludge on the outermost side, and moisture flowing out from the food material is separated on the inner side to form a layer, with the specific gravity on the innermost side. A light clean oil layer is formed.

The top plate or the bottom plate of the rotating body 7b is provided with an oil separation port 7d at a position where the oil is collected during the centrifugation, and a water separation port 7e is provided at a position where the water is collected during the centrifugal separation. Separates the separated oil and the separated water.
The oil separated by the centrifuge 7 flows from the oil separation port 7d through the oil circulation pipe 6 to the oil tank 8, and is temporarily stored. This oil is a clean oil that does not contain moisture or impurities, and is returned to the oil layer 2 from the oil return port 1b opened in the side wall of the storage tank above the oil level by the pump 13a and reused for deep-fried cooking.

The water separated by the centrifuge flows from the water separation port 7e to the water tank 9 via the pipe and is temporarily stored. Although this water does not contain oil, fried residue, etc., depending on the food fried in the storage tank 1, it may contain salt, and as such may not be suitable for reuse.
For this reason, a reverse osmosis module 11 for removing salt from water is provided downstream of the water tank 9.

The sludge remaining in the centrifuge 7 is separated from the inner wall of the rotating body 7b by means of scraping it off with a scraper built in the centrifuge 7, and is discharged into the dregs receptacle 10 below.
Since this sludge is a solid that contains almost no water, it is relatively easy to store and can be reused as livestock feed or fertilizer.

The reverse osmosis module 11 has a double cylindrical structure, and a pipe from the water tank 9 communicates with the inner cylinder and penetrates the reverse osmosis module 11. The inner cylinder is a reverse osmosis membrane cylinder 11a formed of a reverse osmosis membrane and connected to a pipe from a water tank, and the outer cylinder 11b has a top plate and a bottom plate and surrounds the reverse osmosis membrane cylinder 11a. And an outlet for water that has permeated through the reverse osmosis membrane cylinder 11a.
Further, upstream of the reverse osmosis membrane cylinder 11a, a pump 13b is provided as a pressure means for pressurizing water to permeate the reverse osmosis membrane, and a solenoid valve 12b is provided on a pipe extending from the reverse osmosis membrane cylinder 11a. Is provided.

The electromagnetic valve 12b is normally closed, and the water that flows into the reverse osmosis module 11 from the water tank 9 is pressurized to a pressure equal to or higher than the osmotic pressure by the pump 13b, so that the water permeates the reverse osmosis membrane cylinder 11a. On the other hand, the reverse osmosis membrane has very small eyes, and salt (sodium ions, chloride ions) and the like cannot permeate the reverse osmosis membrane cylinder 11a. Therefore, it becomes suitable for reuse. This salt-free water is supplied to a device (not shown) that requires water through a pipe and reused. The salt-free water that has passed through the reverse osmosis membrane cylinder 11a removes not only the salt content but also water-soluble carcinogens such as dioxins, nitrite nitrogen, nitrate nitrogen, trihalomethane, and acrylamide. When used around the kitchen, the human body will not be adversely affected.
If the water purification process is continued in the reverse osmosis module 11, the salinity of water increases on the upstream side of the reverse osmosis membrane cylinder 11a, and the osmotic pressure rises. Therefore, the osmotic pressure of the reverse osmosis membrane is prevented from exceeding the performance of the pump 13b by periodically opening the solenoid valve 12b to discharge and discard the concentrated water having a high salt content. In this reverse osmosis module 11, 50 to 70% of the water supplied from the water tank 9 is reused as non-salt water, and 50 to 30% of the water is discarded as concentrated water.

In such a fryer according to the first embodiment, the oil layer 2 is obtained by applying the oil containing fried residue and moisture generated by fried cooking to the centrifugal separator 7, separating the clean oil and returning it to the oil layer 2 for reuse. The cleanliness of the oil can be maintained, the life of the oil can be extended, and its consumption can be reduced.
Furthermore, water and solid impurities (sludge) separated by the centrifuge 7 can be reused, and the amount of waste discharged from the fryer can be reduced.

Second Embodiment
As shown in FIG. 2, in the fryer according to the second embodiment, an aqueous layer 3 is provided under the oil layer 2.
In the fryer storage tank 1, an oil layer 2 for frying food and a water layer 3 for keeping the oil clean by taking in the fried residue in the oil below the oil layer 2 are stored in two layers.
The heater 4 is disposed approximately at the center of the height in the oil layer 2. When the oil layer 2 is heated by energizing the heater 4, three layers of the oil high temperature portion 2 a, the oil low temperature portion 2 b, and the water layer 3 are formed in the storage tank 1 from the top.

The oil low temperature portion 2 b is in direct contact with the water layer 3 on the lower surface, and serves as a temperature buffering portion between the oil high temperature portion 2 a and the water layer 3.
In addition, the water layer 3 sinks impurities such as fried dregs produced in the oil high-temperature part 2a during frying and moisture that has flowed out of the food.

  In the flyer according to the second embodiment, the water circulation pipe 14 branches and extends from the discharge pipe 5 and is connected to the centrifuge 7 and is also connected to the centrifuge 7 and opened to the storage tank side wall from the water separation port 7e. 1c. In the path of the water circulation pipe 14, an electromagnetic valve 12a, a centrifugal separator 7, a water tank 9, a reverse osmosis module 11, and an electromagnetic valve 12c are arranged in this order. The centrifuge 7 and the reverse osmosis module 11 may be the same as those used in the first embodiment.

When the electromagnetic valve 12a is opened after fried cooking is temporarily stopped or finished, water containing impurities such as fried residue and oil adhering thereto flows into the centrifuge 7 through the water circulation pipe 14.
When the centrifuge 7 is operated, a layer of accumulated sludge, a separated water layer, and a separated oil layer are formed in the rotating body 7b in order from the outside due to the difference in specific gravity.
An oil return pipe 15 is connected to the oil separation port 7 d of the centrifuge 7 and communicates with the oil return port 1 b on the side wall of the storage tank via the oil tank 8. The oil separated by the centrifugal separator 7 is temporarily stored in the oil tank 8 and returned to the oil layer 2 through the oil return pipe 15 through the oil return pipe 15 and the oil return port 1b opened in the storage tank side wall by the suction force of the pump 13a. It is.
Further, the water separated by the centrifuge 7 is temporarily stored in the water tank 9, pressurized by the pump 13 b, salt is removed by the reverse osmosis module 11, and then passed through the water circulation pipe 14 to the water layer 3 of the storage tank 1. Returned. The reverse osmosis module 11 also removes carcinogenic substances from the water. Most of these carcinogens are water-soluble, and when they flow out of the ingredients into the oil layer 2, they move to the water layer 3. Conventionally, when fried cooking continues, the concentration of the carcinogen in the water layer 3 increases, and the oil layer 2 It was difficult to move from. By returning the water from which the carcinogen has been removed by the reverse osmosis module 11 to the water layer 3, the water layer 3 can easily take the carcinogen from the oil layer 2, and the oil layer 2 does not contain the carcinogen as much as possible. The deep-fried food to be made can be good for the human body.
When the salt-free water is returned to the storage tank 1, the electromagnetic valve 12c of the water circulation pipe 14 is opened, and the water flows into the water layer 3 from the water return port 1c provided on the storage tank side wall. In the second embodiment, after the concentrated water is discarded by the reverse osmosis module 11, the same amount of new water is supplied from a water tank 9 or a water pipe (not shown) connected to the water layer 3 of the storage tank 1. The amount of water and the water level in the storage tank 1 can be maintained constant.
The sludge remaining in the centrifuge 7 is discharged into the dregs container 10 and reused as in the first embodiment.

Moreover, the fryer of the second embodiment has an oil circulation pipe 16 that allows oil to flow from the low temperature oil portion 2b of the oil layer 2 to the centrifuge 7, and separates impurities and moisture from the oil by centrifugation, and stores them in a storage tank. I try to return it. The oil circulation pipe 16 sucks oil from the opening of the side wall of the storage tank provided at the height of the oil low-temperature part 2 b, joins the water circulation pipe 14, and is connected to the centrifuge 7.
When the solenoid valve 12d provided in the oil circulation pipe 16 is opened to flow the oil into the centrifuge 7 and the centrifuge 7 is operated, three layers of sludge, separated water, and separated oil are obtained. Separated. The separated oil is returned to the oil layer 2 through the oil return pipe 15, the separated water is returned to the water layer 3 through the water circulation pipe 14, and the sludge is discharged to the waste receiving container 10 and reused. .
Thereby, like the fryer of 1st Embodiment, the oil of the storage tank 1 can be attracted | sucked, it can isolate | separate from impurities etc. with the centrifuge 7, and can be reused, and water and solid impurities (sludge) are also isolate | separated, respectively. And can be reused.

Furthermore, in the fryer of the second embodiment, the water in the water layer 3 is also allowed to flow into the centrifuge 7 and separated into oil, separated water, and sludge, and reused. The cleanliness of the oil layer 2 and the water layer 3 can be further maintained, the life of the oil and water can be extended, and the consumption can be reduced.
Also, solid impurities (sludge) can be reused, reducing the amount of waste from the fryer.

  In the flyer of the second embodiment, an oil circulation pipe 16 from the oil layer 2 is also connected to the centrifuge 7 to which the water circulation pipe 14 is connected, and water centrifuge and oil centrifuge are performed in the same centrifuge 7. However, a separate centrifuge may be provided and the oil circulation pipe 16 may be connected thereto.

<Third Embodiment>
As shown in FIG. 3, the flyer according to the third embodiment is provided with a filtered water tank 18 in the path of the water circulation pipe 17, and the centrifuge 7 is arranged in a waste system 19 of the filtered water tank 18.
Similar to the second embodiment, the fryer stores the oil layer 2 and the water layer 3 in the upper and lower layers in the storage tank 1, and the heater 4 is disposed in the middle of the oil layer 2.

  In the flyer of the third embodiment, the water circulation pipe 17 branches and extends from the discharge pipe 5 and is connected to the lower part of the filtered water tank 18 and connected to the water return port 1c opened from the upper part of the filtered water tank 18 to the storage tank side wall. Has been. In the path of the water circulation pipe 17, an electromagnetic valve 12a, a filtered water tank 18, a pump 13c, and an electromagnetic valve 12c are arranged in this order.

A filter 18a made of 0.7 mm mesh stainless steel is horizontally provided in the center of the height of the filtered water tank 18, and the fried residue is separated from the water flowing into the filtered water tank 18 and passing through the filter 18a. It can be made to sink to the lower part of 18. The water that has passed through the filter 18 a is returned to the water layer 3 of the storage tank 1 through the water circulation pipe 17 from the upper part of the filtered water tank 18.
A breathe pipe 18 b is connected to the upper end of the filtered water tank 18. The height of the upper end of the breathe pipe 18b is slightly higher than the oil level of the storage tank 1, and is bent downward and opened from there. Thereby, even if excessive water is supplied to the storage tank 1 and the filtered water tank 18, the excess water is discharged from the breathe pipe 18b. For this reason, the water level of the storage tank 1 and the height of the oil level can be appropriately maintained, and the oil is not overflowed from the storage tank 1 and water does not touch the heater 4 and suddenly boil. It can be performed.

When the water filtered in the filtered water tank 18 is returned to the storage tank 1, the water flows in from the water return port 1c provided on the side wall of the storage tank in the horizontal eccentric direction to rotate the water layer 3 in a spiral shape. As the water layer 3 rotates, the oil low temperature part 2b located immediately above the water layer 3 also starts to rotate.
By the horizontal rotation of the oil layer 2, the amount of oil in contact with the surface of the heater 4 is increased, and the heat exchange efficiency between the heater 4 and the oil 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 increased, the surface temperature of the heater 4 necessary for cooking while maintaining a predetermined oil temperature (for example, 170 ° C.) can be made lower than before, Oil deterioration can be reduced.
Furthermore, by making oil and water contact positively at the boundary of the oil water, impurities in the oil layer 2 can be transferred to the water layer 3 and degradation of cooking oil can be significantly suppressed.

  In the conventional fryer, the disposal system 19 is provided in the lower part of the filtered water tank 18, and the impurities accumulated in the filtered water tank 18 are discarded together with the adhering oil and a large amount of water. The centrifuge 7 is provided in the system 19.

In this fryer, when fried cooking is continued in the lower part of the filtered water tank 18 while fried cooking is continued, the electromagnetic valves 12 a and 12 c are closed to stop the circulation of water between the storage tank 1 and the filtered water tank 18.
Next, the electromagnetic valve 12e of the disposal system 19 is opened, and impurities accumulated in the lower part of the filtered water tank 18 and oil adhering thereto are caused to flow into the centrifuge 7 together with water.
When the centrifuge 7 is operated, as in the first embodiment and the second embodiment, due to the difference in specific gravity, a layer of accumulated sludge, a layer of separated water, And a separate oil layer is formed.

An oil return pipe 15 is connected to the oil separation port 7 d of the centrifuge 7 and communicates with the oil return port 1 b of the storage tank 1 via the oil tank 8. The oil separated by the centrifugal separator 7 is temporarily stored in the oil tank 8 and returned to the oil layer 2 through the oil return pipe 15 through the oil return pipe 15 and the oil return port 1b opened in the storage tank side wall by the suction force of the pump 13a. It is.
A water return pipe 20 communicating with the upper part of the filtered water tank 18 through the water tank 9 and the reverse osmosis module 11 is connected to the water separation port 7e of the centrifuge 7. The water separated by the centrifuge 7 is temporarily stored in the water tank 9, pressurized by the pump 13 b, salt is removed by the reverse osmosis module 11, and returned to the filtered water tank 18 through the water return pipe 20. Note that the water return pipe 20 may be connected to the storage tank 1 to return water to the water layer 3 instead of being connected to the filtered water tank 18. Also in the third embodiment, the same amount of new water as the concentrated water discarded in the reverse osmosis module 11 is supplied so that the water amount and water level of the storage tank 1 can be maintained constant.
The sludge remaining in the centrifuge 7 is discharged into the dregs container 10 and reused as in the first embodiment.

Similarly to the second embodiment, the fryer of the third embodiment also has an oil circulation pipe 16 through which oil flows from the low temperature oil portion 2b of the oil layer 2 to the centrifuge 7. The oil circulation pipe 16 sucks oil from the opening of the side wall of the storage tank provided at the height of the low temperature oil part 2 b, joins the waste system 19 of the filtered water tank 18, and is connected to the centrifuge 7.
When the solenoid valve 12d provided in the oil circulation pipe 16 is opened to flow the oil into the centrifuge 7 and the centrifuge 7 is operated, three layers of sludge, separated water, and separated oil are obtained. Separated. The separated oil is returned to the oil layer 2 through the oil return pipe 15, the separated water is sent to the filtered water tank 18 through the water return pipe 20, and the sludge is stored in the waste receiving container 10 and reused. The
In the third embodiment, a centrifuge separate from the centrifuge 7 may be provided, and an oil circulation pipe may be connected to the centrifuge.

Thereby, in the fryer of 3rd Embodiment, the impurity and water of the filtration water tank 18, and the oil of the oil layer 2 are flowed into the centrifuge 7, and isolate | separated the separated oil, the separated water, and sludge, respectively. By reusing them, the cleanliness of the oil layer 2 and the water layer 3 of the storage tank 1 can be further maintained, the life of the oil and water can be extended, and the consumption can be reduced.
Also, solid impurities (sludge) can be reused, reducing the amount of waste from the fryer.

Furthermore, in the flyer of the third embodiment, impurities such as frying waste generated in the oil high temperature part 2a of the storage tank 1 are provided by providing the filtered water tank 18 and providing the centrifuge 7 in the waste system 19 of the filtered water tank 18. Can be taken into the water layer 3 at any time by horizontal rotation of the water layer 3 and collected in the filtered water tank 18, so that the oil layer 2 in the storage tank 1 can always be maintained in a clean state while the impurities are accumulated, and fried cooking can be performed. .
Moreover, since the centrifuge 7 can be operated without changing the water level of the storage tank 1 and the height of the oil level by interrupting the circulation of water between the storage tank 1 and the filtered water tank 18, impurities can be removed. It is not necessary to interrupt fried cooking when applying to the centrifuge 7, and cooking can be performed continuously.

<Fourth embodiment>
As shown in FIG. 4, 4th Embodiment applies the fryer of 3rd Embodiment to the large sized fryer apparatus which is used in a factory etc. and performs continuous frying cooking of foodstuffs.
This fryer device has a horizontally long large storage tank 1 in which oil and water are stored in two upper and lower layers.
A plurality of heaters 4 are arranged side by side in the middle of the oil layer 2. When the heater 4 is energized to heat the oil layer 2, the storage tank 1 is formed with three layers of an oil high temperature portion, an oil low temperature portion, and an aqueous layer 3 in order from the top. In FIG. 4, the boundary between the oil high temperature portion and the oil low temperature portion is omitted.

In this fryer apparatus, a conveyor 21 that can continuously and continuously fry foods is disposed in the oil layer 2.
The conveyor 21 is formed of a metal mesh, extends in the longitudinal direction of the storage tank 1, and inclines at the left end of FIG. At the time of deep-fried cooking, the conveyor 21 rotates at a constant speed, and the food charged in the oil layer 2 is conveyed from the right to the left in FIG. A tray or the like (not shown) is provided below the front end of the conveyor 21, and the fried food material falls from the front end of the conveyor 21 and is received by the tray.

  In this fryer apparatus, the lower part of the storage tank 1 is divided into a plurality of (four in FIG. 4) areas by a partition, and each area is formed in a quadrangular pyramid shape and has a discharge pipe 5 at the bottom. A water circulation pipe 17 branches from each discharge pipe 5 and is connected to the lower part of the filtered water tank 18 and connected to the water return port 1c opened from the upper part of the filtered water tank 18 to the side wall of each area.

The structure of the filtered water tank 18 is the same as that of the third embodiment, a horizontal filter 18a is provided at the center of the inner height, a breathe pipe 18b is connected to the upper end, and a waste system 19 is connected to the lower part. ing.
Although omitted in FIG. 4, similarly to the third embodiment, the water circulation pipe 17 is provided with an electromagnetic valve and a pump at appropriate positions.

The water in the water layer 3 is sucked into the water circulation pipe 17 from the discharge port 1a, flows into the filtered water tank 18, is filtered by the filter 18a, and is returned to the storage tank 1. At this time, water flows in the horizontal eccentric direction from each water return port 1c provided on the side wall of the storage tank, and rotates the water layer 3 in each area in a spiral shape. Since the lower part of the storage tank is partitioned into a plurality of areas by the partition, the rotation of the water layer 3 in each area interferes with each other and is not hindered. As the water layer 3 rotates, a flow also occurs in the low temperature oil portion located immediately above the water layer 3 and a slight flow also occurs in the high temperature oil portion above the low temperature oil portion.
Thereby, like 3rd Embodiment, while the heat exchange efficiency of the heater 4 and oil high temperature part becomes favorable, an impurity can be taken in into the water layer 3 and the deterioration of cooking oil can be suppressed.

A centrifuge 7 is provided in the waste system 19 of the filtered water tank 18. Further, an oil return pipe 15 communicating with the storage tank side wall via the oil tank 8 is connected to the oil separation port 7 d of the centrifugal separator 7. Furthermore, a water return pipe 20 communicating with the upper part of the filtered water tank 18 via the water tank 9 and the reverse osmosis module 11 is connected to the water separation port 7e of the centrifuge 7.
Further, the flyer device of the fourth embodiment has an oil circulation pipe 16 through which oil flows from the oil low temperature part of the oil layer 2 to the centrifuge 7. The oil circulation pipe 16 sucks oil from the opening of the storage tank side wall provided at the height of the low temperature oil part, joins the waste system 19 of the filtered water tank 18 and is connected to the centrifuge 7.
Although omitted in FIG. 4, similarly to the third embodiment, the disposal system 19, the oil return pipe 15, the water return pipe 20, the reverse osmosis module 11, and the oil circulation pipe 16 are also equipped with electromagnetic valves and pumps at appropriate positions. Is provided.

As a result, in the fryer device of the fourth embodiment, the impurities in the filtered water tank 18 and the oil in the oil layer 2 are caused to flow into the centrifuge 7 and separated into separated oil, separated water, and sludge, respectively. By using it, oil and water consumption can be reduced and the amount of waste from the fryer can be reduced.
Further, by providing the filtered water tank 18, the oil layer 2 can always be maintained in a clean state while impurities are accumulated, and frying cooking can be performed while the centrifuge 7 is in operation. There is no.

  In the conventional large-sized fryer device, a large amount of frying waste is generated and the consumption of oil and water is enormous. In the flyer device according to the fourth embodiment, these can be significantly reduced, and the additional cost of providing the centrifuge 7 and the like is relatively small compared to the price of the entire device. It can be said that it is preferable.

DESCRIPTION OF SYMBOLS 1 Storage tank 1a Discharge port 1b Oil return port 1c Water return port 2 Oil layer 2a Oil high temperature part 2b Oil low temperature part 3 Water layer 4 Heater 5 Discharge pipe 5a Cock 6 Oil circulation pipe 7 Centrifuge 7a Case 7b Rotating body 7c Rotating plate 7d Oil separation port 7e Water separation port 8 Oil tank 9 Water tank 10 Waste receptacle 11 Reverse osmosis module 11a Reverse osmosis membrane cylinder 11b Outer cylinder 12a-12 Solenoid valve 13a-13c Pump 14 Water circulation pipe 15 Oil return pipe 16 Oil circulation pipe 17 Water circulation pipe 18 Filtration water tank 18a Filter 18b Breeze pipe 19 Waste system 20 Water return pipe 21 Conveyor

Claims (6)

A storage tank for storing cooking oil;
A fryer having a heater disposed in the storage tank,
Water and sludge are separated from the oil in three layers by the rotation of the rotating body containing oil, and the oil and water are discharged by the increased pressure, respectively, and the sludge accumulated on the inner wall of the rotating body is released. A centrifuge for discharging
An oil tank for temporarily storing the oil separated by the centrifuge;
An oil circulation pipe having a pump in the path, sucking oil from the storage tank and flowing it into the centrifuge, and returning the separated oil to the storage tank via the oil tank;
A water tank for temporarily storing water separated by the centrifuge;
A fryer characterized by comprising a waste receiving container for receiving sludge separated by the centrifuge. A storage tank for storing an oil layer of cooking oil and a water layer in contact with the oil layer in an upper and lower layer;
A fryer having a heater disposed in the storage tank,
The oil and sludge are centrifuged in three layers from the water by the rotation of the rotating body containing water, and the water and oil are respectively discharged by the increased pressure, and the sludge accumulated on the inner wall of the rotating body is released. A centrifuge for discharging
A water tank for temporarily storing water separated by the centrifuge;
A water circulation pipe having a pump in the path, sucking water in the water layer from the storage tank to flow into the centrifuge, and returning the separated water to the water layer through the water tank When,
An oil tank for temporarily storing the oil separated by the centrifuge;
An oil return pipe that has a pump in the path and returns the separated oil to the oil layer from the centrifuge via the oil tank;
A fryer characterized by comprising a waste receiving container for receiving sludge separated by the centrifuge. A storage tank for storing an oil layer of cooking oil and a water layer in contact with the oil layer in an upper and lower layer;
A heater disposed in the storage tank;
A filtered water tank for filtering water with a filter inside,
A water circulation pipe having a pump in the path, for sucking the water in the water layer from the storage tank and flowing it into the filtered water tank, and returning the water filtered in the filtered water tank from the supply port on the side wall of the storage tank to the water layer; ,
A fryer having a waste system for discarding impurities removed in the filtered water tank,
The rotor is disposed in the waste system, and the impurities are centrifuged into three layers of sludge, water, and oil by the rotation of the rotor, and the water and oil are discharged by the increased pressure, respectively, and the rotor A centrifuge for separating and discharging the sludge accumulated on the inner wall of
A water tank for temporarily storing water separated by the centrifuge;
A water return pipe that has a pump in the path and returns the separated water from the centrifuge through the water tank to the filtered water tank or the water layer;
An oil tank for temporarily storing the oil separated by the centrifuge;
An oil return pipe that has a pump in the path and returns the separated oil to the oil layer from the centrifuge via the oil tank;
A fryer characterized by comprising a waste receiving container for receiving sludge separated by the centrifuge.   The oil in the oil layer is sucked from the storage tank, and water and sludge are separated from the oil in three layers by the rotation of the rotating body in a centrifuge provided separately or separately from the centrifuge. 4. The fryer according to claim 2, wherein the oil is returned to the oil layer.   In the path of the water return pipe, a reverse osmosis membrane for removing salt from the permeated water, a pressure means for pressurizing the water to permeate the reverse osmosis membrane, and an upstream side of the reverse osmosis membrane The fryer according to any one of claims 1 to 3, wherein a concentrated water disposal system for discharging concentrated water having a high salt content is disposed.   6. The fryer according to claim 5, wherein the reverse osmosis membrane removes one or more of dioxins, nitrite nitrogen, nitrate nitrogen, trihalomethane, and acrylamide from water that passes through the reverse osmosis membrane.

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