JP2007275147A - Fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fryer with a defoaming function. <P>SOLUTION: The fryer comprises a reservoir for storing cooking oil and water for cleaning the oil in two upper and lower layers, a water layer stored at the lower part inside the reservoir, an oil layer stored above the boundary of the oil and the water where the lower surface of the oil is in direct contact with the upper surface of the water layer, a heater disposed in the oil layer, and a filtering water tank for making the water sucked from the water layer by a water pump flow in, filtering foreign matters such as fried dregs contained in the water and returning the water after filtration to the water layer. In the fryer, a defoaming water tank for storing the water from the filtering water tank, accumulating the water at the lower part, also storing air at the upper part and separating the water from the air is provided in a water route from the filtering water tank to the water layer, an inner pressure adjusting means is provided at the upper end part of the defoaming water tank, and the air stored at the upper part of the defoaming water tank is discharged to the outside by the inner pressure adjusting means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fryer that automatically collects foreign matters such as fried residue and automatically cleans cooking oil, maintains the transparency of cooking oil, prevents deterioration, and makes cooking oil last longer.

In a conventional fryer, water, a low temperature oil part, and a high temperature oil part are stored in the storage tank in order from the bottom, and the stored water and cooking oil are in contact with each other in the same storage tank. Some oil reservoirs are provided with heaters so that cooking oil can be heated to a predetermined temperature (Patent Documents 1 to 3).
In such a fryer, fine frying residue or colloidal fried product that is released from the food and diffused in the oil during frying, or water that has flowed out of the food (hereinafter referred to as foreign matter), It is allowed to fall freely to the bottom of the storage tank so that the deterioration of cooking oil due to turbidity of these foreign substances is reduced.

  Also, the cooking oil containing foreign matter in the oil layer is sucked with a pump and discharged to the bottom of the water tank by the oil feeding pipe, so that the foreign matter such as frying residue is separated and subsided while the cooking oil rises in the water layer. There is also one that extends the life of cooking oil (Patent Document 4).

  In addition, a frying removal device that separates and removes foreign matter such as frying waste in a storage tank that is formed separately from the fryer and separated into an oil layer and an aqueous layer is provided. In some cases, foreign matter such as fried residue is removed by circulating between the two (Patent Document 5).

Japanese Patent Publication No.58-22207 Japanese Patent Publication No.55-40249 Japanese Utility Model Publication No. 60-09426 Japanese Utility Model Publication No. 05-68440 Japanese Utility Model Publication No. 56-11860

〔problem〕
In such a conventional fryer, when bubbles are formed in the oil layer and the water layer, the air in the bubbles expands explosively by contacting the oil heated to a high temperature by the heater. There is a risk of hot oil splashing around.
For this reason, it is necessary to eliminate water or oil bubbles not only during standby but also during cooking. However, there is no device capable of appropriately defoaming, and a fryer having such a defoaming function has been desired.

  The present invention has been made in view of the above-mentioned problems in the prior art, and the technical problem specifically set in order to solve this problem is to eliminate water or oil bubbles not only during standby but also during cooking. An object of the present invention is to provide a fryer having a defoaming function.

In order to identify a flyer that can effectively solve the above-mentioned problems in the present invention, all the matters recognized as necessary are covered and specifically configured as the problem solving means.
The first problem-solving means relating to the fryer includes a storage tank that stores cooking oil and water for purifying the oil in two upper and lower layers, an aqueous layer that is stored below in the storage tank, and this An oil layer that is stored above the boundary of the oil and water that directly contacts the lower surface of the water layer with the upper surface of the water layer, a heater disposed in the oil layer, and water sucked from the water layer by a water pump flows into the water layer. In a fryer having a filtration water tank for filtering foreign matter such as fried debris contained in the water and returning the filtered water to the aqueous layer, the water from the filtered water tank to the water layer is removed from the filtered water tank. A defoaming water tank is provided for storing water, storing water in the lower part and storing air in the upper part to separate water and air, and providing an internal pressure adjusting means at the upper end of the defoaming water tank. It is characterized by exhausting the air stored in the upper part of the defoaming water tank to the outside. It is an.

    The second problem-solving means relating to the flyer is the first problem-solving means, wherein an oil pump that sucks oil from the vicinity of the upper surface of the oil layer and feeds it to the water layer is formed above the oil pump. A gas reservoir for storing the water vapor stored in the oil pump, and an internal pressure adjusting means for exhausting the water vapor in the gas reservoir to the outside, collecting the water vapor evaporated from the oil in the oil pump in the gas reservoir, It is characterized by exhausting to the outside by the internal pressure adjusting means.

  In the first problem-solving means relating to the flyer, in the circulation path of water that is returned from the storage tank to the storage tank via the filtered water tank and the defoaming water tank, gas and liquid are separated when flowing into the defoaming water tank, and the air stored above is stored. When the pressure exceeds the specified pressure, it can be exhausted through the internal pressure adjustment means with a built-in pressure adjustment valve, and the water in the storage tank can be kept free of bubbles at all times. It is possible to prevent the bubble from bobbing due to contact with oil, to ensure the safety of work, and to prevent the environment from being contaminated.

  In the second problem-solving means relating to the fryer, the water vapor collected in the upstream portion of the oil pump is exhausted through the gas reservoir in the oil circulation path that sucks the oil from the storage tank and lowers the temperature of the oil and then returns to the storage tank. When the pressure exceeds the specified pressure, it can be exhausted via a pressure-controlled exhaust means with a built-in pressure control valve, avoiding the occurrence of bumping due to contact between high-temperature oil and water vapor. Safety can be ensured and pollution of the environment can be prevented.

Hereinafter, the best embodiment according to the present invention will be described in detail.
However, this embodiment is specifically described for better understanding of the gist of the invention, and does not limit the content of the invention unless otherwise specified.

〔Constitution〕
As shown in FIGS. 1 to 5, the embodiment of the fryer 1 includes cooking oil and water for purifying the oil by collecting foreign matter such as fried residue in the oil, A water circulation path 2 comprising a storage tank 1a for storing the upper and lower two layers (oil layer 11 and water layer 12), and a filtered water tank 2a formed of a transparent material detachably installed at a position close to the storage tank 1a, It is attached to the outer wall of the storage tank 1a, sucks oil from the oil high temperature portion 11b through the oil suction port 3f at the upper end, and drops foreign matters such as fried residue from the lower end opening (fried residue discharge port) 3g to the water layer 12 side. The oil sucked by the oil pump 3b at a height corresponding to the vicinity of the boundary between the oil low temperature part 11a and the oil high temperature part 11b in the middle of the flow path is branched to the outside of the storage tank via the oil circulation system pipe 3c, and the outer surface The cooling fan 3d is overhanged and the wind from the cooling fan 4 is A box-type flow path 3a that can be more forcibly cooled, and an oil circulation path 3 that sucks oil from the box-type flow path 3a and flows out to the water layer 12 in the storage tank via an oil circulation system pipe 3c outside the storage tank; Are housed in a box-shaped housing 1b and are compactly collected.

As shown in FIGS. 2, 4, and 5, the oil layer 11 (11 a, 11 b) of the storage tank 1 a is provided with a heater 5 for heating oil, and the heater is positioned slightly above the center of the oil layer 11. After the heater 5 is heated, it becomes two layers of a high temperature part and a low temperature part slightly below the position where the heater 5 is arranged (hereinafter, the high temperature part of this oil is changed to the oil high temperature part 11b). The low temperature part of the oil is referred to as the oil low temperature part 11a).
As a result, in the storage tank 1a, three layers of water, the oil low temperature part 11a, and the oil high temperature part 11b are formed in order from the bottom.

Among these, the oil high-temperature part 11b is an oil frying part that sinks food with frying clothes and the like placed on a fried food basket formed of a thin metal rod or a wire mesh or the like and fries it at an appropriate temperature.
The low-temperature oil part 11a forms a temperature buffer part between the high-temperature oil part 11b and water, and also serves as a supply source of new oil that is not adjusted or deteriorated in the oil high-temperature part 11b.
The water layer 12 plays a role of a sediment layer for precipitating foreign matters such as frying waste produced during the frying operation of foods, and serves as a foreign matter reservoir, and also performs functions such as washing of oil and temperature adjustment by moving water.
A water level sensor 1c is provided at the boundary position between the water layer 12 of the storage tank 1a and the low temperature oil part 11a, and the boundary between the oil and water is constantly grasped. If the water level is too high or too low, an alarm lamp and buzzer are used. To be informed.

  As shown in FIG. 4, the water circulation path 2 is sucked from a suction port (water suction port) 2b provided at the center of the bottom formed in a downwardly convex cone or pyramid, and is connected to the pipe 2c and the shutoff valve 2d. The water purified into the filtered water tank 2a is sucked from the suction port 2f of the filtered water tank 2a by the water pump 2e and flows into the defoaming water tank 2g, and the bubbles are raised upward in the defoamed water tank 2g. Water that has been floated and from which bubbles have been removed flows out from the outlet 2h of the defoaming water tank 2g, and is returned to the water layer 12 from the water supply port 2i provided at the top of the water layer 12 that accumulates in the bottom layer of the storage tank 1a. Form a circulation path.

  The filtered water tank 2a is a non-purified water storage part of the filtered water tank 2a in which a filter 2j having a 0.7 mm mesh made of stainless steel that divides the inside into two is vertically installed, and water is sucked from the storage tank 1a by a water pump 2e. When flowing into 2k, water passes through the filter 2j and exits to the purified water storage part 2l side. In the non-purified water storage part 2k of the filter 2j, foreign matter such as frying waste is filtered and settled to the bottom. In addition, the purified water storage part 2l downstream of the filter 2j is provided with a suction port 2f for supplying water to the water layer 12 in the storage tank 1a, and the storage tank 1a and the filtered water tank 2a are connected to each other by piping of the water circulation path 2. It connects so that water can circulate between 2g of bubble water tanks.

  As shown in FIG. 5, the oil circulation path 3 includes a sheet metal box-shaped flow path 3a attached to the outer wall of the storage tank 1a, a pipe 3c made of a circular pipe, an oil discharge nozzle 3e, and an oil pump 3b. The mold channel 3a is attached to the storage tank 1a and sucks oil from the vicinity of the upper surface of the high temperature oil portion 11b through the oil suction port 3f drilled in the upper end portion, and removes foreign matter such as frying residue from the lowermost opening 3g. The pipe 3c is connected to the lower side of the height position corresponding to the boundary between the oil high temperature part 11b and the oil low temperature part 11a in the middle position of the box-type flow path 3a. The oil sucked by the pump 3b is discharged to the outside through the pipe 3c and is formed so as to be sent to the water layer 12 through the oil discharge nozzle 3e. Then, a large number of fins 3d are provided on the outer surface side of the box-type flow path 3a so as to be forcedly cooled by the wind from the cooling fan 4, so that the oil passing through the inside of the box-type flow path 3a rapidly Allow to cool.

  As shown in FIG. 6, the oil discharge nozzle 3e protruding into the water layer 12 is the terminal end of the oil circulation path 3, and is arranged with the longitudinal direction of the pipe horizontally at the lower end of the water layer 12, and the oil discharge nozzle 3e An oil discharge member 3i having a small number of small holes 3h,..., 3h drilled in the upper surface at the distal end, a semicircular cross section and an open lower surface, and a closed end. The oil that is fixed and passes through is divided into small holes (small oil passage holes) 3h,..., 3h, floats to the upper oil low temperature portion 11a in a small ball or continuous form, and is included in the oil It is formed so that foreign matter such as fine fried residue can be dropped into water.

Also, as shown in FIG. 4, an air vent pipe 7a is connected to the upper end of the defoaming water tank 2g via a water side exhaust pipe joint 7f, and the upper end of a gas reservoir 3j formed above the oil pump 3b. A pipe 7b is connected via an internal pressure adjusting joint 7g as a pressure regulating exhaust means for venting air, and both pipes 7a and 7b are joined by a joint joint 7c at a position close to the oil pump 3b, and downstream of the joint joint 7c. An internal pressure adjusting joint 7e, which is a pressure adjusting exhaust means, is provided at the tip of the merging side pipe 7d connected to the pipe and connected to the upper end of the box-type flow path 3a. An air vent path 7 is formed for exhausting both the water vapor accumulated in the upper portion of the gas tank and adjusting the pressure so that the pressure in the air reservoir in the defoaming water tank 2g and the gas reservoir 3j provided on the oil pump 3b side is substantially constant.
In the air vent path 7 formed in this way, when oil and water are circulated, the air stored in the water circulation path 2 when not circulating is accumulated at the upper end of the defoaming water tank 2g, and the water in the oil What has evaporated and accumulated at the upper end of the oil pump 3b is joined by the air vent pipe 7a and the air vent pipe 7b connected via the internal pressure adjusting joint 7g at the joint joint 7c, and then the joint side pipe 7d. When the internal pressure increases to a specified pressure or higher, the air is exhausted from the internal pressure adjusting joint 7e.
Since the exhaust is always performed when the pressure exceeds the specified pressure, the amount of air stored in the upper end of the defoaming water tank 2g and the amount of water vapor stored in the upper end of the oil pump 3b are both reduced to a small amount. It is possible to prevent air and water vapor from being mixed into the high temperature oil portion 11b during the circulation of the oil, and to avoid a sudden boiling accident due to sudden expansion of air or water vapor.

The water in the water layer 12 provided at the lower end of the storage tank 1a is absorbed by the storage tank 1a and the filtered water tank 2a by the water circulation path 2 including the filtered water tank 2a in response to the suction force / power output by the water pump 2e of the water circulation path 2. It circulates between 2g of bubble water tanks, purifies water itself, and purifies oil.
As shown in FIGS. 4 and 7, the water is circulated by sucking together water in the water layer 12 and foreign matter such as fried debris from a water inlet 2 b provided at the bottom of the storage tank 1 a, and piping 2 c of the water circulation path 2. Then, it flows into the filtered water tank 2a through the shutoff valve 2d, filters foreign matter such as fried residue by a filter 2j provided in the filtered water tank 2a, and purifies the purified water in the filtered water tank 2a by filtering the foreign material. Suction is performed from the storage side and returned to the storage tank 1a by the water pump 2e. When returning to the storage tank 1a, the suction tank 2a is arranged in a substantially horizontal direction along the side wall 1e on the side surface adjacent to the side surface 1d adjacent to the side surface 1d which is perpendicular to the side wall 1d on the back side of the storage tank 1a. By discharging the purified water, the water in the storage tank 1a is rotated in a spiral. With the rotation of water, the oil low temperature part 11a located immediately above in contact with water starts to turn around with a time delay, and the oil high temperature part 11b above the oil low temperature part 11a also turns around with a further delay.

  At this time, when the momentum of the water is increased, the oil low temperature part 11a is vigorously stirred, and the oil is washed by shaking it into the water to fine foreign matters such as fried residue contained in the oil. Even in this case, the upper part of the oil low temperature part 11a rotates in a relatively quiet state without the lower stirring state, and the oil high temperature part 11b rotates relatively gently according to the rotational force in the upper part of the oil low temperature part 11a. Heat is received from the heater 5.

  As shown in FIGS. 5 and 6, the oil is circulated from the cooling fan 4 by sucking the oil from the upper part of the oil high-temperature part 11 b at the upper end of the box-shaped flow path 3 a for the purpose of adjusting the temperature of the oil and cleaning. The air is forcedly cooled by the wind of the air to lower the temperature from 170 ° C. to 70-80 ° C., discharged from the height position corresponding to the upper end of the low temperature oil portion 11a of the box-type flow path 3a to the outside through the pipe 3c, The oil is sent to the water layer 12 by the pump 3b, and the oil sent to the water layer 12 is divided into small portions from the oil discharge member 3i fixed to the oil discharge nozzle 3e and discharged into the water, thereby making the oil small spherical or continuous. This makes it easy to separate the foreign matter such as fine fried debris contained in the oil into the water, cools it, and floats in the water while dropping the foreign matter into the oil low temperature part 11a. After reaching, they are combined as a constituent of the oil layer 11.

[Function and effect]
In the embodiment of the fryer configured as described above, the heating state is set to the standby temperature at the time of standby when the fry is not fried. For example, as shown in FIG. When fried at a set temperature of 170 ° C., the temperature is controlled so that the standby temperature is lowered to about 150 ° C. and maintained.
Immediately before frying, when the frying operation is performed by pressing the switch 1g provided on the front panel 1f of the apparatus to raise the fly, the temperature of the heater 5 rises and the oil temperature for the frying (the oil temperature is set from the standby temperature ( For example, the temperature is raised to 170 ° C. Since the heater 5 is arranged in the oil high temperature portion 11b, only the oil high temperature portion 11b rises to the set temperature, but in the oil low temperature portion 11a, the high temperature oil rises and coalesces with the oil in the oil high temperature portion 11b. When the oil is relatively low, the oil goes down to the oil low temperature part 11a and merges with the oil in the oil low temperature part 11a, so there are always two layers of the oil high temperature part 11b and the oil low temperature part 11a. The water layer 12 in contact with the portion 11a is not overheated, and the oil high temperature portion 11b can maintain the set temperature for frying.

Also at this time, by rotating the water of the water layer 12, the heating mode can be changed from natural convection heat transfer to forced convection heat transfer, and the heat exchange performance by the heater 5 can be enhanced. The temperature rises well following the rise of the temperature, and can quickly return from the standby state to the state of the frying operation.
For this reason, the time required for starting up and returning the oil temperature is shortened, and the temperature followability of the oil heated by the heater 5 is improved. Therefore, the rising temperature of the heater can be suppressed, and the oil temperature can be reduced even when used repeatedly. Deterioration can be prevented.

  When the material to be fried is put into the high temperature oil portion 11b, a normal frying operation is performed, and a large amount of fried residue is generated when fried. When the large amount of the generated fried residue is generated, it quickly falls downward, descends to the water layer 12 through the low temperature oil part 11a, and the filtered water tank according to the water circulation path 2 by the action of the operating water pump 2e. It is sent to 2a, the fried residue is filtered, and the filtered water is returned to the water layer 12 again. On the other hand, the small fried residue is sucked together with the oil in the oil high temperature portion 11b together with the oil in the upper portion of the oil high temperature portion 11b at the upper end of the box flow passage 3a, and is forcibly cooled in the box flow passage 3a. The oil that has been reduced in temperature is lowered from the opening 3g provided at the lower end of the box-shaped flow path 3a to the water layer 12, and the temperature of the oil is lowered from a height corresponding to the oil low temperature portion 11a. It is discharged to the outside through the pipe 3c, sent to the water layer 12 by the operating oil pump 3b, and is divided into small portions from the oil discharge member 3i of the oil discharge nozzle 3e disposed in the water layer 12. The oil is released into the water 12 and comes into contact with the water in a small spherical or continuous form, allowing it to cool and easily separate foreign matter such as fine frying debris contained in the oil into the water. The oil low temperature part 1 Coalescing the oil in the oil temperature portion 11a as a constituent of the oil low temperature section 11a after reaching to a.

  In this way, the frying residue is effectively filtered by the water circulation and the oil circulation, and the oil in contact with the water is rotated by generating a large vortex in the water layer 12, so that the water contacts with the water. The oil is washed out by increasing the amount of oil and prevents deterioration of the oil. Furthermore, when the water layer 12 rotates in a spiral shape, the oil in the upper layer of the water slowly rotates, so that the oil whose temperature has risen at the heater surface portion efficiently transfers heat to the oil in the entire oil layer 11, The time required for the oil temperature to rise and to return from the standby state is shortened.

  In addition, the oil cleaning effect can be improved without emulsifying the oil by circulating the oil, the frying residue can be prevented from being accumulated, and the cooled oil can be introduced into the water by effectively lowering the temperature of the oil. The oil circulation can be functioned while improving the safety, and the oil can be divided and released as small spheres or continuous in the water, so that the oil washing effect can be enhanced. .

  As a result, the oil in the vicinity of the wall surface of the storage tank 1a whose temperature is lower than that of the central portion of the high-temperature oil portion 11b is sucked, and the wind from the cooling fan 4 is received by the cooling fins 3d when passing through the box-type flow path 3a. If it cools by this and it is made to return to the water layer 12 used as the lowest layer of the storage tank 1a, for example, 170 degreeC oil can be reduced to 70-80 degreeC and it can draw in into the water layer 12 safely, and a box-type flow By separating the foreign matter such as frying residue from the two places of the lower end of the passage 3a and the oil discharge member 3i fixed to the oil discharge nozzle 3e, more foreign matters can be removed and the oil washing effect is enhanced. be able to.

  When the water is circulated, the water in the water layer 12 rotates in a spiral shape, and the oil is rotated by the rotational force. As a result, the amount of heat transfer from the heater 5 increases and the temperature of the heater 5 is increased effectively. The difference from the oil temperature is reduced, the temperature followability during heating is improved, and the heating temperature of the heater can be reduced to a temperature at which the oil is difficult to deteriorate. It is possible to effectively prevent the deterioration of the oil by the synergistic effect that the mixing is reduced.

  Therefore, until now, when the oil temperature is set to 170 ° C. with the single-phase 200V heater power 3 kW shown in FIG. 8, for example, the temperature of the heater 5 needs to be increased to about 215 ° C., and the oil deterioration is accelerated. However, by turning the water, the oil also turns, the heat exchange efficiency is increased, the temperature difference is reduced, and the oil temperature becomes 170 ° C. Even when the heater temperature does not exceed 185 ° C., it can be used while suppressing oil deterioration as much as possible.

[Another aspect]
Such an embodiment is specifically described in order to facilitate understanding of the gist of the invention, but does not limit the content of the invention, and is not particularly described (including design content). The embodiment is not limited, and may be changed as appropriate. In this sense, some other embodiments that meet the spirit of the invention are shown below.

For example, the shape of the storage tank 1a is not particularly limited to a bottomed rectangular tube, and can be applied to a bottomed cylinder or another rotating body as long as there is no problem in manufacturing or use.
Further, the fin 3d of the box-type flow path 3a may be provided with a fin that protrudes inside the flow path and also serves as a current plate.
The box-shaped flow path 3a need not be limited to a rectangular cross section, and may have any shape that can easily separate foreign matter after suction, and can be changed to an appropriate shape if the cross-sectional area is larger than that of general piping. Can do.
As the heating source, the case of heating by electric power is exemplified, but gas heating may be used.

The rotation of the oil layer is based on a method of rotating the oil layer 11 indirectly by rotating the water sent out by the water pump 2e in the water layer 12 of the storage tank 1a. However, as shown in FIG. The water layer 12 may be directly rotated by providing the submersible pump 2m in the water 12 along the wall surface, and the oil layer 11 may be rotated by the rotational force of the water.
In addition, the oil layer 11 may be rotated directly by providing an in-oil pump (not shown) in the oil layer 11 of the storage tank 1a.

It is a front view which shows the fryer which concerns on embodiment of this invention. It is a top view which shows a flyer same as the above. It is a right view which shows a fryer same as the above. It is 3 surface explanatory drawing shown in the state which removed the housing | casing about the water circulation path | route of a flyer same as the above, (A) is a right view, (B) is a top view, (C) is a rear view. It is a three-plane explanatory view showing the oil circulation path of the fryer with the housing removed, (A) is a front view, (B) is a plan view, and (C) is a right side view. It is attachment explanatory drawing which expands and shows the oil discharge member 3i fixed to the oil discharge nozzle 3e arrange | positioned at the storage tank of a fryer same as the above, (A) is a front view, (B) is a top view. It is plane explanatory drawing which shows the eddy generation | occurrence | production state of the water layer in the storage tank of a fryer same as the above. It is a graph which shows the measured temperature when the temperature of oil is set for frying using a fryer same as the above and it heated up. It is plane explanatory drawing which shows the rotation condition produced with the submersible pump of the water layer in the storage tank of a fryer same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flyer 1a Storage tank 1b Housing 1d (Back side) Side wall 1e (Side side) Side wall 1f Front panel 1g Switch 2 Water circulation path 2a Filtration water tank 2b (Storage tank) Suction port [Water absorption port]
2c Piping 2d Shut-off valve 2e Water pump 2f Suction port 2g (for filtered water tank) 2g Defoamed water tank 2h Outlet 2i (for defoamed water tank) 2i Water supply port 2j Filter 2k Non-purified water reservoir 2l Purified water reservoir 2m Submersible pump 3 Oil circulation path 3a Box-type flow path 3b Oil pump 3c Oil circulation system piping 3d Cooling fin 3e Oil discharge nozzle 3f Oil suction port 3g Opening [Drying waste discharge port]
3h Small hole 3i Oil discharge member 3j Gas storage 4 Cooling fan 5 Heater 7 Air venting path 7a, 7b Piping 7c Junction joint 7d Junction side pipe 7e (Water side) internal pressure adjustment joint [pressure adjusting exhaust means]
7f Pipe joint for water side exhaust 7g (Oil side) Internal pressure adjustment joint [Pressure regulating exhaust means]
11 Oil layer 11a Oil low temperature part 11b Oil high temperature part 12 Water layer

Claims (2)

A storage tank for storing cooking oil and water for purifying the oil in two upper and lower layers;
A water layer stored below in this storage tank,
An oil layer stored above the boundary of the oily water that directly contacts the lower surface of the oil with the upper surface of the water layer;
A heater disposed in the oil layer;
A filtered water tank that flows in water sucked from the water layer by a water pump and filters foreign matter such as fried residue contained in the water, and returns the filtered water to the water layer;
In a flyer with
In the water path from the filtered water tank to the water layer, an antifoaming water tank for storing water from the filtered water tank, storing water in the lower part and storing air in the upper part to separate water and air is provided.
A fryer characterized in that an internal pressure adjusting means is provided at the upper end of the defoaming water tank, and the air stored in the upper part of the defoaming water tank is exhausted to the outside by the internal pressure adjusting means. An oil pump for sucking oil from the vicinity of the upper surface of the oil layer and feeding it to the water layer;
A gas reservoir for storing water vapor formed in the oil pump and formed above the oil pump;
An internal pressure adjusting means for exhausting the water vapor in the gas reservoir to the outside,
The fryer according to claim 1, wherein water vapor evaporated from oil in an oil pump is collected in the gas reservoir and exhausted to the outside by the internal pressure adjusting means.

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