JP7352252B2 - flyer - Google Patents

Description

The present invention relates to a commercial fryer that heats cooking oil in an oil tank and heats and cooks food by putting food into the oil tank.

A fryer heats cooking oil stored in an oil tank to a predetermined cooking temperature using a heating means such as a burner or a heating element, thereby cooking food placed in the oil tank.
When the time and number of times of heating and cooking increases, the amount of impurities accumulated in the cooking oil increases, causing the cooking oil to deteriorate and resulting in a decrease in cooking quality. Also, the amount of cooking oil is reduced due to the oil being absorbed into the food. Therefore, when using a fryer, it is necessary to periodically filter the cooking oil or replenish new cooking oil (additional oil) depending on the cooking time, number of times, etc. For example, in Patent Document 1, a small amount of cooking oil (approximately 30 to 40 pounds) is stored in an oil tank, and a basket containing a rated amount (680 g) of potatoes is put into the oil tank and cooked. A fryer is disclosed in which cooking oil is appropriately replenished. In this kind of fryer, fine dirt from the cooking oil in the oil tank is taken out with the potatoes, while new cooking oil is replenished into the oil tank as needed, resulting in less contamination of the cooking oil in the oil tank. , the span of cooking oil replacement can be lengthened.

Patent No. 5340962

However, in such fryers, the amount of heat held by the entire cooking oil in the oil tank is small, and if you continuously cook the rated amount of potatoes or add more potatoes than the rated amount, the temperature of the cooking oil may not reach the appropriate temperature. If the cooking range is exceeded, quality cannot be guaranteed. For this reason, even during busy times such as lunchtime when it is necessary to quickly cook a large amount of potatoes, cooking must be interrupted until the temperature of the cooking oil rises.

Therefore, an object of the present invention is to provide a fryer that can cook a large amount of food even during busy times such as lunchtime while maintaining the advantages of cooking with a small amount of cooking oil (retention of cooking oil). This is the purpose.

In order to achieve the above object, the invention according to claim 1 provides an oil tank in which cooking oil is stored, a heating means provided in the oil tank for heating the cooking oil, a control means for controlling the heating means, and an oil tank. An oil tank installed higher up and containing cooking oil, an outlet path that can supply the cooking oil in the oil tank to the oil tank, an opening/closing means that can open and close the outlet path, and an oil tank installed below the oil tank to supply cooking oil from the oil tank to the oil tank. A filtering tank capable of filtering discharged cooking oil, a filtering pump capable of sucking cooking oil filtered by the filtering tank, and a fuel supply pipe connected between the discharge side of the filtering pump and the oil tank and equipped with a fuel supply valve. and a second oil supply pipe that branches from the oil supply pipe between the filtering pump and the oil supply valve, is connected to the outlet passage on the upstream side of the opening/closing means, and is equipped with a second oil supply valve,
The control means controls the heating means at a predetermined first amount of heat when the cooking oil stored in the oil tank has a predetermined first amount of oil and the food to be cooked has a predetermined first rated amount. a first cooking mode for cooking, the cooking oil is at a predetermined second oil amount that is greater than the first oil amount, and the food to be cooked is at a predetermined second rated amount that is greater than the first rated amount; A second cooking mode in which the food is cooked by controlling the heating means with a predetermined second amount of heat that is larger than the first amount of heat can be executed separately;
The oil tank is capable of storing at least a difference in cooking oil between the first oil amount and the second oil amount, and the control means causes the opening and closing means to open the lead-out path when executing the second cooking mode after executing the first cooking mode. Open the oil tank and supply the cooking oil in the oil tank to the second oil level ,
When filtering the cooking oil in the oil tank, the control means opens both the oil supply valve and the second oil supply valve while operating the filtering pump, and allows the cooking oil filtered in the filtering tank to flow into the oil tank via the oil supply pipe. It is characterized in that it is returned to the oil tank via the second oil supply pipe .
In order to achieve the above object, the invention according to claim 2 provides an oil tank in which cooking oil is stored, a heating means provided in the oil tank for heating the cooking oil, a control means for controlling the heating means, and an oil tank. An oil tank installed higher up and containing cooking oil, an outlet path that can supply the cooking oil in the oil tank to the oil tank, an opening/closing means that can open and close the outlet path, and an oil tank installed below the oil tank to supply cooking oil from the oil tank to the oil tank. A filtering tank capable of filtering discharged cooking oil, a filtering pump capable of sucking cooking oil filtered by the filtering tank, and a fuel supply pipe connected between the discharge side of the filtering pump and the oil tank and equipped with a fuel supply valve. and a second oil supply pipe that branches from the oil supply pipe between the filtering pump and the oil supply valve, is connected to the outlet passage on the upstream side of the opening/closing means, and is equipped with a second oil supply valve,
A first cooking mode in which the cooking oil stored in the oil tank is set to a predetermined first amount of oil, the to-be-cooked item is set to a predetermined first rated amount, and the heating means is set to a predetermined first amount of heat to cook the to-be-cooked item. Then, the cooking oil is set to a predetermined second oil amount that is larger than the first oil amount, the food to be cooked is set to a predetermined second rated amount that is larger than the first rated amount, and the heating means is set to a predetermined heat amount that is larger than the first rated amount. While the second cooking mode in which the food is cooked by setting the second heat amount can be executed separately,
The oil tank is capable of storing at least a difference in cooking oil between the first oil amount and the second oil amount, and the control means causes the opening and closing means to open the lead-out path when executing the second cooking mode after executing the first cooking mode. Open the oil tank and supply the cooking oil in the oil tank to the second oil level ,
When filtering the cooking oil in the oil tank, the control means opens both the oil supply valve and the second oil supply valve while operating the filtering pump, and allows the cooking oil filtered in the filtering tank to flow into the oil tank via the oil supply pipe. It is characterized in that it is returned to the oil tank via the second oil supply pipe .
In the invention according to claim 3, in the configuration of claim 1 or 2, the heating means includes a gas burner and an electric heater, and the control means operates only the gas burner in the first cooking mode, and operates only the gas burner in the second cooking mode. and an electric heater are operated together.
Note that the term "gas burner" here refers not only to one that generates flame by combustion of fuel gas and combustion air to generate heat, but also one that generates heat from combustion exhaust gas by intermittently burning fuel gas and combustion air in a combustion chamber. This includes those that are heated by a pulse burner (pulse burner).

According to the present invention, by cooking the first rated portion to be cooked with a small amount of cooking oil, contamination of the cooking oil can be suppressed and the cooking time can be changed over a longer period of time. Since cooking is performed using a large amount of cooking oil with a relatively high calorie amount of heat, it is possible to suppress the temperature drop of the cooking oil that accompanies cooking. Therefore, even if the second rated amount of food is continuously cooked, the quality does not deteriorate, and the food can be provided smoothly. That is, while maintaining the advantage of cooking with a small amount of cooking oil (resistance of cooking oil), it is possible to cook a large amount of food even during busy times such as lunchtime.
Particularly, according to the third aspect of the invention, in addition to the above-mentioned effects, both the gas burner and the electric heater are operated in the second cooking mode, so that when a large amount of food is put into the oil tank, cooking is possible. Even if the oil temperature drops, the predetermined cooking temperature can be quickly reached.

It is a schematic diagram of a fryer. It is a flowchart of the cooking mode by a controller. It is a schematic diagram of a flyer of a modification. It is a flowchart of the cooking mode in the fryer of a modification.

Embodiments of the present invention will be described below based on the drawings.
FIG. 1 is a schematic diagram showing an example of a fryer. This fryer 1 includes an oil tank 2 at the upper part of the container body (not shown). A pulse combustor 3 as a heating means having a combustion chamber 4 and a tail pipe 5 is provided at the bottom of the oil tank 2 .
The oil tank 2 also has a first cooking section 6 formed in a deep bottom shape with a pulse combustor 3 at the bottom, and a second cooking section 7 located above the first cooking section 6. There is. The first cooking section 6 has a rectangular cylindrical shape with an opening area that does not change in the vertical direction, and the second cooking section 7 has a reverse taper that expands from front to back and left and right as it goes upward from the upper end of the first cooking section 6. It is formed in the shape of

Further, at the rear of the oil tank 2 and at the top of the vessel, an oil tank 8 for storing cooking oil is provided. This oil tank 8 is for replenishing the cooking oil stored in the oil tank 2. The oil tank 8 is provided with an outlet pipe 9 for supplying the cooking oil inside to the oil tank 2. The outlet pipe 9 can be opened and closed by the replenishment valve 10.
This oil tank 8 is connected via a supply pipe 12 to an oil container 11 such as a one-ton can provided at the bottom of the vessel. This oil container 11 stores solid oil, and the solid oil inside can be melted by an electric heater 13 provided on the outside including the bottom. Melted cooking oil can be supplied to the oil tank 8. Furthermore, an oil level sensor 15 is provided within the oil tank 8 to detect the position of the oil level. The oil tank 8 can store at least an amount of oil corresponding to the difference between the first cooking section 6 and the second cooking section 7 of the oil tank 2, and is provided with a viewing window 28 through which the remaining amount of cooking oil can be visually checked. It is being

On the other hand, an air chamber 16 is provided outside the front side of the oil tank 2, and a gas conduit 17 is connected to a mixing chamber provided inside the air chamber 16 and communicating with the combustion chamber 4, through which fuel gas is supplied. Ru. Further, an air supply pipe 19 connected to a fan 18 provided at the bottom of the vessel body is connected to the mixing chamber to supply combustion air.
The tail pipe 5 of the pulse combustor 3 is arranged in a meandering manner at the bottom of the oil tank 2 and then connected to an exhaust pipe 20 drawn out from the air chamber 16. The exhaust pipe 20 is disposed in a meandering or winding manner in contact with the oil tank 8 at the rear of the vessel, and then protrudes upward to discharge combustion exhaust gas.

Further, a filtering tank 21 equipped with a filter at the bottom is provided at the bottom of the vessel, and the cooking oil in the oil tank 2 can be discharged to the filtering tank 21 from an oil drain pipe 22 connected to the bottom of the oil tank 2. ing. The oil drain pipe 22 is provided with an oil drain valve 23 that is manually operated.
Furthermore, a filtering pump 24 is provided at the bottom of the vessel, the suction side of the filtering pump 24 is connected to the bottom of the filtering tank 21 via a suction pipe 25, and the discharge side of the filtering pump 24 is connected to the lower rear surface of the oil tank 2. The fuel supply pipe 26 is connected to the fuel supply pipe 26. The oil supply pipe 26 is provided with a oil supply valve 27 which is a solenoid valve.

A controller 30 as a control means is provided at the lower front of the vessel. This controller 30 monitors the cooking oil temperature detected from a temperature control thermistor 31 provided in the oil tank 2 according to a menu selected by an operation panel (not shown) provided in the front of the device, and controls the pulse combustor 3 ON/OFF control is performed to cook foods such as potatoes. This cooking will be explained based on the flowchart of FIG.
Here, the amount of food to be cooked at one time is divided into two types: a first rated amount (for example, 680 g) and a second rated amount (for example, 900 g) that is larger than the first rated amount. When cooking food, cooking oil (approximately 35 pounds) is stored in the oil tank 2 up to the upper end of the first cooking section 6 (L1 shown in FIG. 1). When the operation switch on the operation panel is turned on in S1 in this state, the controller 30 rotates the fan 18 for a predetermined time to supply air in S2, and then intermittently burns the mixed gas in the combustion chamber 4 for pulse combustion. Operate device 3. That is, a spark plug provided in the combustion chamber 4 ignites the mixed gas to cause explosive combustion within the combustion chamber 4, and the pressure rise within the combustion chamber 4 caused by the combustion forces the combustion exhaust into the tail pipe 5. At the same time, the cooking oil stored in the oil tank 2 is heated by repeating the operation (ON/OFF operation) of sucking fuel gas and combustion air into the combustion chamber 4, which has a negative pressure due to the exhaust of the combustion exhaust gas. .

Next, the controller 30 monitors the detected temperature obtained from the temperature control thermistor 31, and when it is determined in S3 that the temperature of the cooking oil has reached a predetermined cooking temperature (for example, 180 to 182 degrees Celsius), the controller 30 Notification is made by outputting a message indicating that cooking is OK.
When this notification is given, the cook puts the basket containing the food to be cooked into the oil tank 2. At this time, since a small amount of the first rated amount of the food to be cooked is put into the first cooking section 6, the food to be cooked is located below the oil level of the first cooking section 6 and the entire food is covered with cooking oil. You will get soaked.
Then, in S4, the cooking mode is determined by operating the operation panel. When the first cooking mode is selected here and the cooking start button provided on the operation panel is pressed in S5, the controller 30 selects the first cooking mode preset corresponding to the first rated amount in S6. The food to be cooked is heated and cooked using the time and the first heat amount of the pulse combustor 3. When the time is up in S7, an alarm is sounded in S8 to notify the end of cooking. The cook pulls up the basket from the oil tank 2. If cooking is to be continued using the first rated amount, the food to be cooked is put in and the cooking start button is pressed, and the processes from S5 onwards are repeated.

Note that when the second rated amount of food to be cooked is put in with the first cooking mode selected and the second rated amount is larger than the first rated amount, the oil level of the small amount of first oil stored in the first cooking section 6 The food to be cooked will be exposed. Therefore, the operator can immediately recognize that the amount of food is incorrect and can start cooking again.

On the other hand, when cooking the second rated amount of food, it is necessary to store cooking oil (approximately 45 pounds) in the oil tank 2 up to the upper end of the second cooking section 7. At this time, when the second cooking mode is selected in S4, the controller 30 opens the oil replenishment valve 10 in S9 to supply cooking oil in the oil tank 8 to the oil tank 2 via the outlet pipe 9, Cooking oil is supplied to the upper end of the second cooking section 7 (L2 shown in FIG. 1). Note that the amount of oil reaching the second cooking section 7 can be confirmed by an oil level thermistor 32 provided in the oil tank 2.
Next, the controller 30 monitors the detected temperature obtained from the temperature control thermistor 31, and when the temperature of the cooking oil reaches a predetermined cooking temperature (for example, 180 to 182 degrees Celsius) as determined in S10, the operation panel indicates that cooking is OK. Notification is made by outputting a display.

When this notification is given, the cook puts the basket containing the food to be cooked into the oil tank 2. At this time, since the second rated amount of food is put into the second cooking section 7 which has a large amount of oil, the entire food is submerged below the oil level of the second cooking section 7. Become. Further, even if the amount of oil is large, the second cooking section 7 expands in an inversely tapered shape, so that the oil surface is unlikely to feel bulky.
Then, when the cooking start button is pressed in S11, the controller 30, in S12, controls the amount of food to be cooked using the second cooking time and second heat amount of the pulse combustor 3, which are preset corresponding to the second rated amount. Cooking things. This second amount of heat is set to be larger than the first amount of heat in the first cooking mode. When the time is up in S13, an alarm is sounded in S14 to notify the end of cooking. The cook pulls up the basket from the oil tank 2. If cooking is to be continued using the second rated amount, the food to be cooked is put in and the cooking start button is pressed, and the processes from S11 onward are repeated.

On the other hand, the controller 30 monitors the position of the oil level in the oil tank 8 with the oil level sensor 15 during operation, and when the oil level in the oil tank 8 falls below a predetermined position due to replenishment of cooking oil to the oil tank 2, In this step, the electric heater 13 is operated to melt the solid oil in the oil container 11, and the oil supply pump 14 is operated to supply the cooking oil in the oil container 11 to the oil tank 8. At this time, if a detection signal of a predetermined position is not obtained from the oil level sensor 15 even after a predetermined period of time has elapsed after operating the oil supply pump 14, the controller 30 determines that the solid oil in the oil container 11 has run out. Then, the oil supply pump 14 is stopped and a notification is made to that effect.

In addition, when shifting from the second cooking mode to the first cooking mode with a small amount of cooking, connect the pipe to the reserve tank (not shown) to the oil drain valve 23, and operate the oil drain valve 23, which is a three-way valve. The cooking oil in the oil tank 2 may be discharged to the reserve tank until the oil level drops to the upper end of the first cooking section 6. Further, the water may be discharged to the filtering tank 21 instead of the reserve tank.
Furthermore, when filtering the cooking oil in the oil tank 2, after turning off the operation switch, the cooking oil in the oil tank 2 is discharged to the filtering tank 21 by operating the oil drain valve 23. When the filtering switch on the operation panel is operated, the filtering pump 24 starts operating, sucks the cooking oil drained into the filtering tank 21 from the suction pipe 25, and returns it to the oil tank 2 via the oil supply pipe 26. Thereby, the cooking oil can be filtered with the filter provided on the bottom surface of the filtering tank 21.

(Effects of invention related to two cooking modes)
In this way, according to the fryer 1 of the above embodiment, the controller 30 generates a pulse when the cooking oil stored in the oil tank 2 has a predetermined first oil amount and the food to be cooked has a predetermined first rated amount. A first cooking mode in which the combustor 3 is controlled with a predetermined first amount of heat to cook the food, and a second cooking mode in which the cooking oil is in a predetermined second oil amount that is greater than the first oil amount and the food is in the first cooking mode. When the predetermined second rated amount is higher than the rated amount, a second cooking mode is executed in which the pulse combustor 3 is controlled with a predetermined second amount of heat that is larger than the first amount of heat to cook the food. By being able to cook the parts with the first rated capacity, cooking with a small amount of cooking oil can prevent contamination of the cooking oil and allow a longer span of time to change the cooking. Since cooking is performed using a large amount of cooking oil with a relatively high calorie amount of heat, it is possible to suppress the temperature drop of the cooking oil that accompanies cooking. Therefore, even if the second rated amount of food is continuously cooked, the quality does not deteriorate, and the food can be provided smoothly. That is, while maintaining the advantage of cooking with a small amount of cooking oil (resistance of cooking oil), it is possible to cook a large amount of food even during busy times such as lunchtime.

In the above embodiment, when the cook selects the second cooking mode from the first cooking mode on the operation panel, the controller automatically replenishes the oil tank with cooking oil and cooks with the second cooking time and second heat amount. Although it is designed to be executed, replenishing cooking oil can also be done manually. That is, after replenishing cooking oil to the second cooking section by manually operating the oil replenishment valve, the second cooking mode may be selected to perform cooking at the set second cooking time and second heat amount. .
Conversely, when the oil replenishment valve and the oil drain valve are electrically operated, the controller automatically operates the oil replenishment valve to execute the second cooking mode, and then the controller automatically operates the oil replenishment valve to execute the second cooking mode, and then the controller automatically operates the oil replenishment valve to execute the second cooking mode, and the controller automatically operates the oil replenishment valve to execute the second cooking mode. When transitioning from the 2nd cooking mode to the 1st cooking mode, the controller automatically operates the oil drain valve to drain the cooking oil from the 2nd cooking section and execute the 1st cooking mode. good.

Alternatively, the first cooking mode and the second cooking mode may be executed completely manually. That is, when cooking with the first rated amount, the amount of cooking oil is set to the first amount by manual operation of the oil drain valve, etc., and the pulse combustor is set to the first amount of heat to cook the food. When cooking with a second rated amount, the cooking oil is set to the second amount of oil by manual operation of an oil replenishment valve, etc., and the pulse combustor is set to the second heat amount to cook the food.

Furthermore, in the invention related to two cooking modes, since an oil tank and a replenishing means using an oil tank are not essential, when executing the second cooking mode by manual operation, it is necessary to Cooking oil may be added. The amount of heat in the second cooking mode may be increased by increasing the amount of heat from the pulse combustor, or by using an auxiliary heat source such as an electric heater or a gas burner. When shifting from the second cooking mode to the first cooking mode, it is also possible to reduce the amount of heat in stages, such as by reducing the amount of heat in accordance with changes in the temperature of the cooking oil.
In addition, a gas burner or an electric heater other than the pulse combustor may be used as the heating means, and the shape of the oil tank is not limited to the inverted tapered shape of the second cooking section, and can be changed as appropriate.

(Effects of invention related to oil replenishment means)
On the other hand, according to the fryer 1 of the above configuration, the oil container 11 that stores solid oil, the solid oil heating means (electric heater 13) that heats the solid oil in the oil container 11, and the oil container 11 that is heated and liquefied. an oil replenishing means for supplying cooking oil in the oil tank 2 to the oil tank 2; the oil replenishing means is connected to an oil tank 8 installed above the oil tank 2; A supply path (supply pipe 12) that can supply the cooking oil in the oil container 11 to the oil tank 8 by the oil pump 14 connects the oil tank 8 and the oil tank 2 to supply the cooking oil in the oil tank 8 to the oil tank 2. By including a supplyable outlet passage (outlet pipe 9) and an opening/closing means (oil replenishment valve 10) for opening and closing the outlet passage, a considerable amount of solid oil can be stored in the oil tank 8 installed above the oil tank 2. can be stored in a liquefied state. Therefore, by refilling the oil tank 8 from the oil container 11 when there is a certain amount of cooking oil in the oil tank 8, it is possible to immediately respond to a reduction in the volume of cooking oil in the oil tank 2, thereby preventing problems. You can cook without any hassle. Therefore, there is no need to constantly operate the electric heater 13, and running costs can be reduced. Further, deterioration of the cooking oil due to heating by the electric heater 13 can also be suppressed.

In particular, here, the oil tank 8 is provided with a viewing section (viewing window 28) that allows the user to visually check the storage status of cooking oil, so that even if the cooking oil in the oil tank 8 is empty, it can be noticed immediately. can. Therefore, it becomes possible to replenish cooking oil into the oil tank 8 at an appropriate timing, and there is less possibility that cooking oil will be hindered due to a delay in replenishing the cooking oil.
Moreover, since the exhaust heat from the pulse combustor 3 is transmitted to the oil tank 8, the cooking oil in the oil tank 8 can be kept liquefied by effectively using the exhaust heat.
Furthermore, a detection means (oil level sensor 15) is provided in the oil tank 8 to detect the storage state of cooking oil, and the controller 30 detects whether the cooking oil in the oil tank 8 is below a predetermined amount by the oil level sensor 15. When it is confirmed that the cooking oil is in the oil tank 8, the electric heater 13 is activated and the oil supply pump 14 is operated, thereby appropriately replenishing the oil tank 8 with cooking oil.
In addition, if the cooking oil in the oil tank 8 does not exceed a predetermined amount even after a predetermined period of time has passed after the oil supply pump 14 is operated, the controller 30 notifies that the oil container 11 is empty. , it becomes possible for the cook to quickly replenish solid oil.

On the other hand, the controller 30 controls the pulse combustor 3 with a predetermined first heat amount when the cooking oil stored in the oil tank 2 is a predetermined first oil amount and the food to be cooked is a predetermined first rated amount. a first cooking mode in which the cooking oil is in a predetermined second oil amount that is larger than the first oil amount, and a predetermined second rated amount in which the cooking oil is in a predetermined second rated amount that is larger than the first rated amount; In this case, it is possible to execute a second cooking mode in which the pulse combustor 3 is controlled with a predetermined second amount of heat larger than the first amount of heat to cook the food, and the oil tank 8 has at least Since cooking oil corresponding to the difference between the first rated amount and the second rated amount can be stored, the cooking oil to be put into the oil tank 2 can be replenished from the oil tank 8 when transitioning from the first cooking mode to the second cooking mode. Therefore, it is possible to immediately shift to the second cooking mode.

In the invention related to the oil replenishment means, the pump that supplies cooking oil from the oil container to the oil tank may be operated manually at any timing, and the oil replenishment valve may be opened and closed automatically or manually. The oil tank may be removable.
In addition, the viewing part is not limited to a viewing window, but a water level gauge or the like can also be used.
Furthermore, when there are multiple oil tanks, each oil tank may be refilled with cooking oil from one oil tank, or an oil tank may be provided for each oil tank. The oil container is not limited to one oil tank, but may be provided for a plurality of oil tanks. The configuration related to filtering can also be omitted.

(Effects of the invention related to the shape of the oil tank)
According to the fryer 1 of the above embodiment, the oil tank 2 includes the first cooking section 6 which is formed in a deep bottom shape and stores the first amount of oil, and the second cooking section 6 which is formed above the first cooking section 6 and has a second oil tank. The second cooking part 7 is provided with a second cooking part 7 in which an amount of oil is stored, and the second cooking part 7 is formed in a reverse tapered shape that expands in the circumferential direction as it goes upward from the upper end of the first cooking part 6. This makes it possible to secure the volume required for transitioning to the second cooking mode without increasing the volume of the oil tank 2 so much. Therefore, even if cooking is possible in both the first cooking mode and the second cooking mode, it is possible to suppress the increase in the size of the oil tank 2, thereby suppressing cost increases, and also prevents deterioration in cooking performance and maintainability.

Particularly here, when a first rated amount of food to be cooked is put in a state where a first amount of cooking oil is stored in the first cooking section 6, the food to be cooked is entirely immersed in the cooking oil. When the second rated amount of food is added, the food is exposed above the oil level of the cooking oil, so the cook is notified that an incorrect amount of food has been added. This allows you to minimize work time loss.

In addition, in the invention related to the shape of the oil tank, the configurations related to the oil tank, oil container, and filtering are not essential, and the first cooking mode and the second cooking mode with different rated amounts of the food to be cooked can be executed in one oil tank. In this case, the configuration of the fryer is not limited to the above configuration.

(Example of changing flyer)
FIG. 3 shows a modification of the invention relating to two cooking modes, and this fryer 1A is equipped with an electric heater 35 as an auxiliary power source in addition to a pulse combustor (gas burner) 3 as a heating means. The electric heater 35 is installed, for example, outside the oil tank 2 from the bottom to the side surfaces of the oil tank 2, but it may also be installed over the entire surface of each surface, or a plurality of heaters may be installed at predetermined intervals. good.
Further, in this fryer 1A, the outlet pipe 9 is connected between the upper end of the first cooking part 6 and the upper end of the second cooking part 7, while the supply pipe 12 from the oil container 11 is connected to the oil tank 8. It is not connected, but is connected to a position above the second cooking part 7 in the oil tank 2. The supply pipe 12 is provided with an additional oil valve 36, and by opening the additional oil valve 36 and operating the oil supply pump 14, cooking oil melted in the oil container 11 can be directly supplied to the oil tank 2. It has become.
Furthermore, the oil supply pipe 26 from the filtering tank 21 to the oil tank 2 is branched from the downstream side of the filtering pump 24, and the branched second oil supply pipe 37 is connected to the upstream side of the oil replenishment valve 10 in the outlet pipe 9. ing. A second oil supply valve 38 is provided in the second oil supply pipe 37 .

Also in this fryer 1A, as shown in FIG. 4, the controller 30 executes each cooking mode based on the same flowchart as FIG. 2. However, in the control shown in FIG. 2, in the second cooking mode, only the pulse combustor 3 is operated to perform cooking with the second heat amount, whereas in the control shown in FIG. , by manually or automatically opening the oil replenishment valve 10, oil is supplied to the upper end of the second cooking section 7, and at the same time, the electric heater 35 is operated to perform heating cooking with the second heat amount combined with the pulse combustor 3. are different.
In addition, in this fryer 1A, in both the first and second cooking modes, the controller 30 monitors the oil level position (oil surface temperature) using the temperature control thermistor 31 or the oil level thermistor 32, and in each cooking mode, When the oil level falls below the set oil level, the additional oil valve 36 is opened, the oil supply pump 14 is operated, and automatic oil addition is performed to supply a certain amount of cooking oil melted in the oil container 11 to the oil tank 2. Note that the controller 30 monitors the remaining amount of oil by measuring the weight of the oil container 11, etc., and issues a notification from the operation panel when the remaining amount reaches a certain amount.

To filter the cooking oil, both the oil supply valve 27 and the second oil supply valve 38 are opened together with the operation of the filtering pump 24, and the filtered cooking oil is returned to the oil tank 2 via the oil supply pipe 26. It is also returned to the oil tank 8 via a pipe 37.

In this way, also in the fryer 1A according to the modification example, by cooking the portion to be cooked with the first rated amount with a small amount of cooking oil, contamination of the cooking oil can be suppressed and the span for changing the cooking can be extended. On the other hand, during busy hours, cooking is performed using a large amount of cooking oil with a relatively high calorific value, so it is possible to suppress the temperature drop of the cooking oil that accompanies cooking. Therefore, even if the second rated amount of food is continuously cooked, the quality does not deteriorate, and the food can be provided smoothly.
In particular, here, when executing the second cooking mode, the pulse combustor 3 and the electric heater 35 are operated together, so that when a large amount of food is put into the oil tank, the temperature of the cooking oil will change. Even if a drop occurs, the predetermined cooking temperature can be quickly reached.

In this modification as well, the gas burner is not limited to a pulse burner, but may also be a gas burner that is installed below the oil tank and heats the oil tank with the flame generated by combustion of the air-fuel mixture.
Alternatively, the oil tank may not be provided, and cooking oil may be replenished from the oil container during the second cooking mode, as in the previous embodiment. In this case, the second oil supply pipe and the second oil supply valve may be eliminated and the filtered cooking oil may be returned only to the oil tank.

1, 1A... fryer, 2... oil tank, 3... pulse combustor, 4... combustion chamber, 5... tail pipe, 6... first cooking section, 7... second cooking section, 8... Oil tank, 9... Outlet pipe, 10... Oil replenishment valve, 11... Oil container, 12... Supply pipe, 13... Electric heater, 14... Oil supply pump, 15... Oil level sensor, 17 ... Gas pipe, 19.. Air supply pipe, 20.. Exhaust pipe, 21.. Filtering tank, 30.. Controller, 31.. Temperature control thermistor, 32.. Oil level thermistor, 35.. Electric heater, 36.・Additional oil valve, 37...Second oil supply pipe, 38...Second oil supply valve.

Claims (3)

an oil tank in which cooking oil is stored;
heating means provided in the oil tank and heating cooking oil;
control means for controlling the heating means;
an oil tank installed above the oil tank and containing cooking oil;
an outlet path capable of supplying cooking oil in the oil tank to the oil tank;
An opening/closing means capable of opening and closing the lead-out path;
a filtering tank provided below the oil tank and capable of filtering cooking oil discharged from the oil tank;
a filtering pump capable of sucking cooking oil filtered by the filtering tank;
an oil supply pipe connected between the discharge side of the filtering pump and the oil tank and equipped with a fuel supply valve;
a second oil supply pipe that branches from the oil supply pipe between the filtering pump and the oil supply valve, is connected to the outlet path on the upstream side of the opening/closing means, and is equipped with a second oil supply valve;
The control means controls the heating means at a first predetermined amount of heat when the cooking oil stored in the oil tank has a predetermined first amount of oil and the food to be cooked has a predetermined first rated amount. a first cooking mode for cooking the food;
When the cooking oil has a predetermined second oil amount that is larger than the first oil amount, and the food to be cooked has a predetermined second rated amount that is larger than the first rated amount, the heating means A second cooking mode in which the food is cooked by controlling with a predetermined second amount of heat that is larger than the amount of heat can be executed separately;
The oil tank is capable of storing cooking oil at least equal to the difference between the first oil amount and the second oil amount, and the control means is configured to store cooking oil when executing the second cooking mode after executing the first cooking mode. , the opening/closing means opens the outlet passage to supply cooking oil in the oil tank to the oil tank until the second oil amount is reached ;
When filtering the cooking oil in the oil tank, the control means opens both the oil supply valve and the second oil supply valve together with the operation of the filtering pump to filter the cooking oil filtered in the filtering tank. A fryer characterized in that the oil is returned to the oil tank via the oil supply pipe and also returned to the oil tank via the second oil supply pipe . an oil tank in which cooking oil is stored;
heating means provided in the oil tank and heating cooking oil;
control means for controlling the heating means;
an oil tank installed above the oil tank and containing cooking oil;
an outlet path capable of supplying cooking oil in the oil tank to the oil tank;
An opening/closing means capable of opening and closing the lead-out path;
a filtering tank provided below the oil tank and capable of filtering cooking oil discharged from the oil tank;
a filtering pump capable of sucking cooking oil filtered by the filtering tank;
an oil supply pipe connected between the discharge side of the filtering pump and the oil tank and equipped with a fuel supply valve;
a second oil supply pipe that branches from the oil supply pipe between the filtering pump and the oil supply valve, is connected to the outlet path on the upstream side of the opening/closing means, and is equipped with a second oil supply valve;
A first method for cooking the food by setting the cooking oil stored in the oil tank at a predetermined first oil amount, the food to be cooked at a predetermined first rated amount, and setting the heating means to a predetermined first heat amount. cooking mode and
The cooking oil has a predetermined second oil amount that is larger than the first oil amount, the food to be cooked has a predetermined second rated amount that is larger than the first rated amount, and the heating means has a heat amount that is larger than the first rated amount. A second cooking mode in which the food is cooked by setting a predetermined second heat amount can be executed separately,
The oil tank is capable of storing cooking oil at least equal to the difference between the first oil amount and the second oil amount, and the control means is configured to store cooking oil when executing the second cooking mode after executing the first cooking mode. , the opening/closing means opens the outlet passage to supply cooking oil in the oil tank to the oil tank until the second oil amount is reached ;
When filtering the cooking oil in the oil tank, the control means opens both the oil supply valve and the second oil supply valve together with the operation of the filtering pump to filter the cooking oil filtered in the filtering tank. A fryer characterized in that the oil is returned to the oil tank via the oil supply pipe and also returned to the oil tank via the second oil supply pipe . The heating means includes a gas burner and an electric heater,
The fryer according to claim 1 or 2, wherein the control means operates only the gas burner in the first cooking mode, and operates both the gas burner and the electric heater in the second cooking mode.

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