CN112998040A

CN112998040A - Frying machine

Info

Publication number: CN112998040A
Application number: CN201911324410.0A
Authority: CN
Inventors: 雉本秀树
Original assignee: Paloma Co Ltd
Current assignee: Paloma Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-06-22
Anticipated expiration: 2039-12-20
Also published as: CN112998040B

Abstract

The invention provides a deep fryer. The advantages of cooking by using a small amount of cooking oil (keeping the cooking oil) are maintained, and a large amount of cooking can be realized even in busy hours such as at noon. A controller (30) of a deep fryer (1) is capable of executing a 1 st cooking mode in which a pulse combustor (3) is controlled to cook an object to be cooked at a predetermined 1 st heat amount when cooking oil stored in an oil sump (2) is a predetermined 1 st oil amount and the object to be cooked is a predetermined 1 st rated amount, and a 2 nd cooking mode in which the pulse combustor (3) is controlled to cook the object to be cooked at a predetermined 2 nd heat amount larger than the 1 st heat amount when the cooking oil is a predetermined 2 nd oil amount larger than the 1 st oil amount and the object to be cooked is a predetermined 2 nd rated amount larger than the 1 st rated amount, respectively.

Description

Frying machine

Technical Field

The present invention relates to a deep fryer for heating cooking oil in an oil tank and putting food materials into the oil tank to perform heating cooking.

Background

The deep fryer heats cooking oil contained in the oil tank to a predetermined cooking temperature by heating means such as a burner and a heating element, thereby heating and cooking the food material contained in the oil tank.

When the time and the number of times of the heating cooking increase, the amount of impurities accumulated in the cooking oil increases, the cooking oil deteriorates, and the cooking quality deteriorates. Furthermore, the amount of cooking oil is reduced due to absorption by the food material. Therefore, when using the deep fryer, it is necessary to periodically filter the cooking oil or supplement (add) new cooking oil according to the cooking time, the number of times, and the like. For example, patent document 1 discloses the following fryer: a small amount of cooking oil of about 30 to 40 pounds is stored in the oil tank, and a basket containing a nominal amount (680g) of potatoes is placed in the cooking oil for cooking, thereby appropriately supplementing the cooking oil reduced by cooking. In such a deep fryer, while the potatoes are taken out together with minute foreign matter from the cooking oil in the oil tank, new cooking oil is appropriately replenished into the oil tank, and as a result, foreign matter in the cooking oil in the oil tank can be suppressed, and the time interval between changes of the cooking oil can be extended.

Patent document 1: japanese patent No. 5340962

However, in such a deep fryer, the amount of heat retained by the cooking oil in the oil tank as a whole is small, and when a rated amount of potatoes is continuously cooked or an amount of potatoes exceeding the rated amount is introduced, the temperature of the cooking oil falls below the range of an appropriate cooking temperature, and thus quality cannot be guaranteed. Therefore, even in a busy time period such as noon where a large number of potatoes need to be cooked as soon as possible, cooking has to be interrupted until the temperature of the cooking oil rises.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a deep fryer capable of achieving a large amount of cooking even at busy hours such as at noon while maintaining the advantages (cooking oil retention) of cooking by using a small amount of cooking oil.

In order to achieve the above object, the invention according to claim 1 is characterized by comprising: an oil tank which stores cooking oil; a heating unit disposed in the oil tank for heating the cooking oil; and a control unit for controlling the heating unit, wherein the control unit can respectively execute a 1 st cooking mode and a 2 nd cooking mode, in the 1 st cooking mode, when the cooking oil stored in the oil groove is a predetermined 1 st oil amount and the cooked object is a predetermined 1 st rated amount, the heating unit is controlled according to a predetermined 1 st heat to cook the cooked object, in the 2 nd cooking mode, when the cooking oil is a predetermined 2 nd oil amount larger than the 1 st oil amount and the cooked object is a predetermined 2 nd rated amount larger than the 1 st rated amount, the heating unit is controlled according to a predetermined 2 nd heat larger than the 1 st heat to cook the cooked object.

In order to achieve the above object, the invention according to claim 2 is characterized by comprising: an oil tank which stores cooking oil; a heating unit disposed in the oil tank for heating the cooking oil; and a control unit for controlling the heating unit, and respectively executing a 1 st cooking mode and a 2 nd cooking mode, wherein in the 1 st cooking mode, the cooking oil stored in the oil tank is set to a predetermined 1 st oil amount, the cooked object is set to a predetermined 1 st rated amount, the heating unit is set to a predetermined 1 st heat amount to cook the cooked object, in the 2 nd cooking mode, the cooking oil is set to a predetermined 2 nd oil amount which is more than the 1 st oil amount, the cooked object is set to a predetermined 2 nd rated amount which is more than the 1 st rated amount, and the heating unit is set to a predetermined 2 nd heat amount which is more than the 1 st heat amount to cook the cooked object.

The invention according to claim 3 is the cooking device according to claim 1 or 2, wherein the gas burner and the electric heater are provided as heating means, and the control means operates only the gas burner in the 1 st cooking mode and operates the gas burner together with the electric heater in the 2 nd cooking mode.

The "gas burner" herein includes not only a device that generates a flame by combustion of the fuel gas and the combustion air to heat the gas, but also a device that intermittently combusts the fuel gas and the combustion air in the combustion chamber to heat the gas by heat of the combustion exhaust gas (pulse burner).

According to the present invention, by cooking a 1 st rated amount of an object to be cooked using a small amount of cooking oil, it is possible to suppress impurities in the cooking oil and to achieve a long time interval for replacing the cooking oil, and on the other hand, in a busy time period, a large amount of cooking oil is used to cook with a relatively high calorie of heat, and therefore, it is possible to suppress a temperature drop accompanying cooking of the cooking oil. Therefore, even if the 2 nd rated amount of the object to be cooked is continuously cooked, the object to be cooked can be smoothly provided without reducing the quality. That is, the advantage (cooking oil retention) of cooking using a small amount of cooking oil is maintained, and a large amount of cooking can be achieved even in a busy hour such as at noon.

In particular, according to the invention described in claim 3, in addition to the above-described effects, since the gas burner and the electric heater are operated together in the cooking mode 2, even when a large amount of the object to be cooked is placed in the oil bath, the temperature of the cooking oil drops, and the predetermined cooking temperature can be quickly reached.

Drawings

Fig. 1 is a schematic view of a deep fryer.

Fig. 2 is a flow chart of a cooking mode of the controller.

Fig. 3 is a schematic view of a modified fryer.

Fig. 4 is a flowchart of a cooking mode in the fryer according to the modification.

Description of the reference symbols

1. 1A: a fryer; 2: an oil sump; 3: a pulse combustor; 4: a combustion chamber; 5: a tail pipe; 6: the 1 st cooking part; 7: a 2 nd cooking part; 8: an oil tank; 9: a delivery pipe; 10: an oil replenishment valve; 11: an oil container; 12: a supply pipe; 13: an electric heater; 14: an oil supply pump; 15: an oil level sensor; 17: a gas conduit; 19: a gas supply pipe; 20: an exhaust pipe; 21: a filter tank; 30: a controller; 31: a temperature-regulating thermistor; 32: an oil-surface thermistor; 35: an electric heater; 36: a make-up oil valve; 37: a 2 nd oil supply pipe; 38: and 2 nd oil supply valve.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a schematic diagram showing an example of a deep fryer. The deep fryer 1 includes an oil tank 2 in an upper portion of a not-shown body. A pulse combustor 3 as a heating unit is provided at the bottom in the oil tank 2, and the pulse combustor 3 has a combustion chamber 4 and a tail pipe 5.

Further, the oil groove 2 has: a 1 st cooking unit 6 having a pulse combustor 3 at the bottom and formed in a deep bottom shape; and a 2 nd cooking part 7 located above the 1 st cooking part 6. The 1 st cooking part 6 has a square tube shape in which an opening area does not change in the vertical direction, and the 2 nd cooking part 7 has a reverse tapered shape which expands in the front-rear and left-right directions as it goes upward from the upper end of the 1 st cooking part 6.

An oil tank 8 is provided at the rear of the oil tank 2 and above the body, and the oil tank 8 stores cooking oil. The oil tank 8 is for replenishing the cooking oil stored in the oil tank 2, and the oil tank 8 is provided with a lead-out pipe 9, the lead-out pipe 9 is for supplying the cooking oil in the oil tank 8 to the oil tank 2, and the lead-out pipe 9 can be opened and closed by an oil replenishment valve 10 which is an electromagnetic valve.

The oil tank 8 is connected to an oil container 11 such as an 18-liter tank provided at a lower portion of the body via a supply pipe 12. The oil container 11 contains solid oil, the solid oil inside can be melted by an electric heater 13 provided outside the oil container including the bottom, and the melted cooking oil can be supplied to the oil tank 8 by an oil supply pump 14 provided in the supply pipe 12. Further, an oil level sensor 15 is provided in the oil tank 8, and the oil level sensor 15 detects the position of the oil level. Oil tank 8 is provided with a sight glass 28 for allowing the remaining amount of cooking oil to be seen, while storing at least the amount of oil corresponding to the difference between cooking parts 1 and 7 in oil bath 2.

On the other hand, an air chamber 16 is provided outside the front side of the oil bath 2, and a gas duct 17 is connected to a mixing chamber provided in the air chamber 16 and communicating with the combustion chamber 4, to supply fuel gas. An air supply pipe 19 connected to a fan 18 provided on the bottom surface of the 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 lower part of the oil tank 2, and then connected to an exhaust pipe 20 led out from the air chamber 16. The exhaust pipe 20 is arranged in a meandering or winding shape in contact with the fuel tank 8 at the rear of the body, and then protrudes upward to be able to discharge combustion exhaust gas.

Further, a filtering tank 21 is provided at the bottom of the body, and cooking oil in the oil bath 2 can be discharged to the filtering tank 21 from an oil discharge pipe 22 connected to the bottom of the oil bath 2, the filtering tank 21 having a filter at the bottom. An oil drain valve 23 which is manually operated is provided in the oil drain pipe 22.

A filter pump 24 is provided at the lower part of the body, the suction side of the filter pump 24 is connected to the bottom of the filter tank 21 via a suction pipe 25, and the discharge side of the filter pump 24 is connected to the lower rear surface of the oil sump 2 via an oil supply pipe 26. The oil supply pipe 26 is provided with an oil supply valve 27 as a solenoid valve.

Further, a controller 30 as a control unit is provided at a lower portion of the front surface of the body. The controller 30 monitors the temperature of the cooking oil detected by the temperature control thermistor 31 provided in the oil bath 2 based on a menu selected through an operation panel, not shown, provided on the front surface of the main body, and controls the pulse combustor 3 to turn on and off, thereby cooking an object to be cooked such as potatoes. The cooking will be described with reference to the flowchart of fig. 2.

Here, the amount of the material to be cooked at one time is two of the 1 st rated amount (for example, 680g) and the 2 nd rated amount (for example, 900g) which is larger than the 1 st rated amount, and first, in the case of cooking the 1 st rated amount of the material to be cooked, the cooking oil (about 35 pounds) is stored in the oil sump 2 up to the upper end of the 1 st cooking unit 6 (L1 shown in fig. 1). In this state, when the operation switch of the operation panel is turned on in step S1, the controller 30 rotates the fan 18 for a predetermined time to supply air in step S2, and then intermittently burns the gas mixture in the combustion chamber 4 to operate the pulse combustor 3. That is, the mixed gas is ignited by the spark plug provided in the combustion chamber 4 and detonated in the combustion chamber 4, and then the following operation (opening/closing operation) is repeated to heat the cooking oil stored in the oil tank 2: the pressure rise in the combustion chamber 4 caused by this combustion forcibly discharges the combustion exhaust gas to the tail pipe 5, and the fuel gas and the combustion air are sucked into the combustion chamber 4 which is negative in pressure due to the discharge of the combustion exhaust gas.

Next, the controller 30 monitors the temperature detected by the temperature-adjusting thermistor 31, confirms that the temperature of the cooking oil has reached a predetermined cooking temperature (for example, 180 to 182 ℃) in the determination at step S3, and then outputs a display or the like for enabling cooking on the operation panel to notify.

After being notified, the cook puts the basket containing the cooked object into the oil sump 2. At this time, since a small amount of the 1 st rated amount of the object to be cooked is put into the 1 st cooking unit 6, the object to be cooked is located below the oil level of the 1 st cooking unit 6, and all of the object to be cooked is immersed in the cooking oil.

Then, in step S4, a cooking mode based on the operation of the operation panel is determined. Here, when the 1 st cooking mode is selected and the cooking start button provided on the operation panel is pressed at step S5, the controller 30 performs heating cooking of the cooking object at the 1 st cooking time preset corresponding to the 1 st rated amount and the 1 st heat quantity of the pulse combustor 3 at step S6. Then, when the time is up in step S7, an alarm sound is sounded in step S8 to notify the end of cooking. The cook lifts the basket from the oil sump 2. When the cooking of the 1 st rated amount is performed next, the process of S5 and thereafter is repeated as long as the cooking object is put in and the cooking start button is pressed.

When the 1 st cooking mode is selected and the 2 nd rated cooking object larger than the 1 st rated cooking object is put in, the cooking object is exposed from the oil level of the 1 st oil amount stored in the 1 st cooking unit 6. Therefore, the operator can immediately recognize that the cooking is the wrong amount, and can perform the cooking again.

On the other hand, in the case of cooking the 2 nd rated amount of the object to be cooked, it is necessary to store cooking oil (about 45 pounds) in the oil sump 2 up to the upper end of the 2 nd cooking part 7. At this time, when the 2 nd cooking mode is selected in step S4, controller 30 opens oil replenishment valve 10 in step S9, supplies the cooking oil in oil tank 8 to oil bath 2 through delivery pipe 9, and supplies the cooking oil until the cooking oil reaches the upper end of cooking unit 2 (L2 shown in fig. 1). Further, it is possible to confirm that the amount of oil reaches the 2 nd cooking unit 7 by the oil level thermistor 32 provided in the oil sump 2.

Next, the controller 30 monitors the temperature detected by the temperature-adjusting thermistor 31, and if the temperature of the cooking oil reaches a predetermined cooking temperature (for example, 180 to 182 ℃) in the determination of step S10, a display indicating that cooking is possible is output on the operation panel, for example, to notify.

After being notified, the cook puts the basket containing the cooked object into the oil sump 2. At this time, since the 2 nd rated amount of the object to be cooked is put into the 2 nd cooking unit 7 having a large amount of oil, the object to be cooked is entirely immersed below the oil level of the 2 nd cooking unit 7. Further, since the 2 nd cooking unit 7 is also expanded in a reverse tapered shape, a feeling of high oil level is not likely to occur even if the amount of oil is large.

When the cooking start button is pressed in step S11, the controller 30 performs heating cooking of the cooking object at step S12 for the 2 nd cooking time preset in accordance with the 2 nd rated amount and the 2 nd heat quantity of the pulse combustor 3. The 2 nd heat quantity is set to be larger than the 1 st heat quantity in the 1 st cooking mode. After the time is up in step S13, an alarm sound is sounded in step S14 to notify the end of cooking. The cook lifts the frame from the oil sump 2. When the cooking of the 2 nd rated amount is performed next, the cooking start button is pressed after the object to be cooked is put in, and the processing from S11 onward is repeatedly executed.

On the other hand, the controller 30 monitors the position of the oil level in the oil tank 8 by the oil level sensor 15 during operation, and when the oil level in the oil tank 8 is lower than a predetermined position due to the supply of cooking oil to the oil bath 2, 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, when the detection signal of the predetermined position is not obtained from the oil level sensor 15 even after the predetermined time has elapsed after the oil supply pump 14 is operated, the controller 30 determines that the solid oil is not present in the oil container 11, and stops the oil supply pump 14 to notify it.

When the cooking mode is shifted from the 2 nd cooking mode to the 1 st cooking mode in which the cooking amount is small, a pipe connected to a preliminary tank, not shown, is connected to the drain valve 23, and the cooking oil in the oil sump 2 is drained to the preliminary tank by operating the drain valve 23 as a three-way valve until the oil level falls to the upper end of the 1 st cooking unit 6. Further, the waste water may be discharged to the canister 21 without being discharged to the preliminary tank.

When the cooking oil in the oil tank 2 is filtered, the operation switch is turned off, and then the cooking oil in the oil tank 2 is drained to the filtration tank 21 by the operation of the drain valve 23. When the filter switch of the operation panel is operated, the filter pump 24 starts to operate, and the cooking oil discharged to the filter tank 21 is sucked from the suction pipe 25 and returned to the oil tank 2 through the oil supply pipe 26. Thereby, the cooking oil can be filtered by the filter provided on the bottom surface of the filter tank 21.

(2 effects of the invention in cooking mode)

In this way, according to fryer 1 of the above-described aspect, controller 30 can execute the 1 st cooking mode in which when the cooking oil stored in oil bath 2 is the predetermined 1 st oil amount and the object to be cooked is the predetermined 1 st rated amount, pulse combustor 3 is controlled to cook the object to be cooked with the predetermined 1 st heat, and the 2 nd cooking mode in which when the cooking oil is the predetermined 2 nd oil amount larger than the 1 st oil amount and the object to be cooked is the predetermined 2 nd rated amount larger than the 1 st rated amount, pulse combustor 3 is controlled to cook the object to be cooked with the predetermined 2 nd heat larger than the 1 st heat, respectively, whereby the object to be cooked with the 1 st rated amount is cooked with a small amount of cooking oil, impurities in the cooking oil can be suppressed, and a long cooking time interval can be obtained, on the other hand, the 2 nd rated amount of the cooked object is cooked with a relatively high calorie of heat using a large amount of cooking oil in a busy time period, and therefore, the temperature drop accompanying cooking of the cooking oil can be suppressed. Therefore, even if the 2 nd rated amount of the object to be cooked is continuously cooked, the object to be cooked can be smoothly provided without reducing the quality. That is, the advantage (cooking oil retention) of cooking using a small amount of cooking oil is maintained, and a large amount of cooking can be achieved even in a busy hour such as at noon.

In addition, although the controller automatically replenishes the oil bath with cooking oil and performs cooking according to the 2 nd cooking time and the 2 nd heat when the cook selects the 2 nd cooking mode from the 1 st cooking mode on the operation panel in the above-described manner, the replenishment of the cooking oil may be performed by a manual operation. That is, after the cooking oil is supplied to the 2 nd cooking unit by manually operating the oil supply valve, the 2 nd cooking mode may be selected and cooking may be performed according to the set 2 nd cooking time and 2 nd heat amount.

Conversely, the following fully automatic modes may also be employed: the controller automatically operates the oil replenishment valve to perform the 2 nd cooking mode when the cooking mode is shifted from the 1 st cooking mode to the 2 nd cooking mode, and automatically operates the oil drain valve to drain the cooking oil in the 2 nd cooking unit to perform the 1 st cooking mode when the cooking mode is shifted from the 2 nd cooking mode to the 1 st cooking mode.

In addition, the 1 st cooking mode and the 2 nd cooking mode may be completely manually performed. That is, in the 1 st rated cooking, the cooking oil is changed to the 1 st oil amount by a manual operation of the drain valve or the like, and the pulse combustor is set to the 1 st heat amount to cook the object to be cooked, while in the 2 nd rated cooking, the cooking oil is changed to the 2 nd oil amount by a manual operation of the oil supplement valve or the like, and the pulse combustor is set to the 2 nd heat amount to cook the object to be cooked.

In the invention of 2 cooking modes, since the oil tank and the replenishment means by the oil tank are not necessary, the cooking oil may be replenished to the 2 nd cooking unit from an external 18 liter tank or the like when the 2 nd cooking mode is executed by manual operation. In the 2 nd cooking mode, the heat quantity may be increased by an auxiliary heat source such as an electric heater or a gas burner, in addition to the pulse burner. It is also possible to reduce the amount of heat in stages, for example, in response to a change in temperature of cooking oil, when shifting from the 2 nd cooking mode to the 1 st cooking mode.

Alternatively, a gas burner or an electric heater other than the pulse burner may be used as the heating means, and the shape of the oil bath is not limited to the reverse-tapered shape of the 2 nd cooking part, and may be changed as appropriate.

(effect of the invention of oil replenishing Unit)

On the other hand, the fryer 1 according to the above-described embodiment includes: an oil container 11 that contains solid oil; a solid oil heating unit (electric heater 13) that heats the solid oil in the oil container 11; and an oil replenishing unit that supplies the cooking oil in the heated and liquefied oil container 11 to the oil tank 2, and the oil replenishing unit includes: an oil tank 8 provided above the oil tank 2; a supply path (supply pipe 12) that connects the oil tank 8 to the oil container 11 and that can supply the cooking oil in the oil container 11 to the oil tank 8 by an oil supply pump 14; a lead-out passage (lead-out pipe 9) that connects the oil tank 8 and the oil tank 2 and that can supply the cooking oil in the oil tank 8 to the oil tank 2; and an opening/closing means (oil replenishment valve 10) for opening/closing the discharge passage, whereby a considerable amount of liquefied solid oil can be stored in the oil tank 8 provided above the oil tank 2. Therefore, by replenishing the cooking oil from the oil tank 11 into the oil tank 8 at the time of a state in which the cooking oil in the oil tank 8 is somewhat rich, it is possible to immediately cope with a decrease in the volume of the cooking oil in the oil tank 2, and to perform cooking without trouble. Therefore, the electric heater 13 does not need to be operated all the time, and the running cost can be reduced. Further, deterioration of the cooking oil due to heating of the electric heater 13 can also be suppressed.

In particular, since the observation portion (sight window 28) through which the stored state of the cooking oil can be visually observed is provided in the oil tank 8, the cooking oil can be immediately found even if the cooking oil in the oil tank 8 is empty. Therefore, the cooking oil can be replenished into the oil tank 8 at an appropriate timing, and the cooking is less likely to be hindered by a delay in the replenishment of the cooking oil.

Further, since the heat discharged from the pulse combustor 3 is transferred to the oil tank 8, the exhaust heat can be effectively used to maintain liquefaction of the cooking oil in the oil tank 8.

Further, a detection means (oil level sensor 15) for detecting the storage state of the cooking oil is provided in the oil tank 8, and the controller 30 operates the electric heater 13 and operates the oil supply pump 14 after it is confirmed by the oil level sensor 15 that the cooking oil in the oil tank 8 is equal to or less than a predetermined rated amount, thereby appropriately supplementing the cooking oil to the oil tank 8.

In addition, when the cooking oil in the oil tank 8 does not exceed the predetermined rated amount even after the predetermined time has elapsed after the oil supply pump 14 is operated, the controller 30 notifies that the oil container 11 is empty, and therefore, the cook can quickly replenish the solid oil.

On the other hand, the controller 30 can execute a 1 st cooking mode in which the pulse combustor 3 is controlled to cook the object to be cooked at a predetermined 1 st heat amount when the cooking oil stored in the oil bath 2 is a predetermined 1 st oil amount and the object to be cooked is a predetermined 1 st rated amount, and a 2 nd cooking mode in which the pulse combustor 3 is controlled to cook the object to be cooked at a predetermined 2 nd heat amount larger than the 1 st heat amount when the cooking oil is a predetermined 2 nd oil amount larger than the 1 st oil amount and the object to be cooked is a predetermined 2 nd rated amount larger than the 1 st rated amount, respectively, and the oil tank 8 can store at least the cooking oil corresponding to the difference between the 1 st rated amount and the 2 nd rated amount, so that when the cooking mode is shifted from the 1 st cooking mode to the 2 nd cooking mode, cooking oil to be supplied to oil bath 2 is replenished from oil tank 8, and therefore, the cooking mode can be immediately shifted to cooking mode 2.

In the oil replenishing means of the present invention, the pump for supplying cooking oil from the oil tank to the oil tank may be manually operated at an arbitrary timing, and the oil replenishing valve may be automatically opened and closed or may be manually opened and closed. The fuel tank may be a removable fuel tank.

The visual part is not limited to the sight glass, and a water level gauge or the like may be used.

When there are a plurality of oil tanks, cooking oil may be replenished from 1 oil tank to each oil tank, or an oil tank may be provided for each oil tank. The oil container is not limited to being provided for each oil tank, and may be provided for a plurality of oil tanks. The structure in terms of filtration can also be omitted.

(effect of invention of oil groove shape)

Further, according to the fryer 1 of the above-described embodiment, the oil tank 2 includes: a 1 st cooking part 6 formed in a deep bottom shape and storing a 1 st oil amount; and a 2 nd cooking part 7 formed on the upper side of the 1 st cooking part 6 and storing the 2 nd oil amount, wherein the 2 nd cooking part 7 is formed in a reverse cone shape expanding along the circumferential direction with the trend of the upper end of the 1 st cooking part 6 to the upper side, thereby ensuring the volume when shifting to the 2 nd cooking mode without greatly increasing the height of the oil adding groove 2. Therefore, even when cooking in the 1 st cooking mode and the 2 nd cooking mode is simultaneously performed, the increase in the size of the oil sump 2 can be suppressed to suppress the increase in the cost, and the cooking performance and the maintenance performance are not impaired.

In particular, when the 1 st rated amount of cooking object is placed in the state where the 1 st cooking unit 6 stores the 1 st amount of cooking oil, the cooking object is entirely immersed in the cooking oil, and when the 2 nd rated amount of cooking object is placed, the cooking object is exposed above the oil level of the cooking oil, so that the user can know that the cooking object is placed in an incorrect amount, and the loss of working time can be minimized.

In the invention of the shape of the oil sump, the structure of the oil sump, the oil container, and the filtering is not essential, and the structure of the deep fryer is not limited to the above-described embodiment as long as the 1 st cooking mode and the 2 nd cooking mode, in which the rated amounts of the object to be cooked are different, can be executed by 1 oil sump.

(modification of fryer)

Fig. 3 is a diagram showing a modification of the 2 cooking modes of the present invention, and the deep fryer 1A includes an electric heater 35 as an auxiliary power supply in addition to the pulse combustor (gas combustor) 3 as a heating means. The electric heater 35 is provided, for example, outside the oil bath 2 over the entire area from the bottom surface to the side surface of the oil bath 2, but may be provided over the entire area of each surface, or may be provided with a plurality of heaters at regular intervals.

In the deep fryer 1A, the delivery pipe 9 is connected between the upper end of the 1 st cooking unit 6 and the upper end of the 2 nd cooking unit 7, while the supply pipe 12 drawn out from the oil container 11 is connected to a position above the 2 nd cooking unit 7 in the oil bath 2, without being connected to the oil tank 8. The supply pipe 12 is provided with a refill valve 36, and by opening the refill valve 36 and operating the oil supply pump 14, the cooking oil melted in the oil container 11 can be directly supplied to the oil tank 2.

The oil supply pipe 26 from the canister 21 to the oil sump 2 branches off downstream of the filter pump 24, and the 2 nd oil supply pipe 37 after branching off is connected to the delivery pipe 9 upstream of the oil replenishment valve 10. The 2 nd oil supply pipe 37 is provided with a 2 nd oil supply valve 38.

In this fryer 1A, as also shown in fig. 4, the controller 30 executes each cooking mode according to the same flowchart as that of fig. 2. However, while the control of fig. 2 is such that only the pulse combustor 3 is operated in the 2 nd cooking mode to perform heating cooking with the 2 nd heat amount, the control of fig. 4 is different from the 2 nd cooking mode in the control of fig. 2 in the following points: oil is supplied to the upper end of the 2 nd cooking part 7 by opening the oil replenishment valve 10 in a manual or automatic manner in step S9, and the electric heater 35 is operated to perform heating cooking with the 2 nd heat added to the pulse combustor 3.

In the fryer 1A, the controller 30 monitors the position of the oil level (oil level temperature) by the temperature control thermistor 31 or the oil level thermistor 32 in both the 1 st cooking mode and the 2 nd cooking mode, and opens the oil replenishment valve 36 to operate the oil supply pump 14 when the oil level is lower than the oil level set in each cooking mode, thereby automatically replenishing oil and supplying a fixed amount of cooking oil melted in the oil container 11 to the oil sump 2. The controller 30 monitors the remaining amount of oil by measuring the weight of the oil tank 11, and notifies the operation panel when the remaining amount reaches a fixed amount.

In addition, in the filtration of the cooking oil, both the oil supply valve 27 and the 2 nd oil supply valve 38 are opened while the filtration pump 24 is operated, and the filtered cooking oil is returned to the oil tank 2 via the oil supply pipe 26 and also to the oil tank 8 via the 2 nd oil supply pipe 37.

In this way, in fryer 1A according to the modified example, a small amount of cooking oil is used for cooking the 1 st rated amount of object to be cooked, so that the time interval for changing cooking can be made longer while suppressing impurities in the cooking oil, and on the other hand, a large amount of cooking oil is used for cooking with a relatively high calorie of heat during a busy time period, so that the temperature drop accompanying the cooking of the cooking oil can be suppressed. Therefore, even if the 2 nd rated amount of the object to be cooked is continuously cooked, the object to be cooked can be smoothly provided without reducing the quality.

In particular, since the pulse combustor 3 and the electric heater 35 are simultaneously operated when the 2 nd cooking mode is executed, the cooking oil can quickly reach a predetermined cooking temperature even if the temperature of the cooking oil drops when a large amount of the object to be cooked is placed in the oil bath.

In this modification as well, the gas burner is not limited to the pulse burner, and a gas burner or the like that is provided below the oil bath and heats the oil bath with flame generated by combustion of the mixed gas may be used.

In addition, the oil tank may not be provided, and the cooking oil may be replenished from the oil tank in the 2 nd cooking mode, as in the above-described manner. In this case, the 2 nd oil supply pipe and the 2 nd oil supply valve may be eliminated, and the filtered cooking oil may be returned only to the oil tank.

Claims

1. A deep fryer, comprising:

an oil tank which stores cooking oil;

a heating unit disposed in the oil tank, heating the cooking oil; and

a control unit that controls the heating unit;

the control unit is capable of performing a 1 st cooking mode and a 2 nd cooking mode respectively,

in the 1 st cooking mode, when the cooking oil stored in the oil tank is a predetermined 1 st oil amount and the cooking object is a predetermined 1 st rated amount, the heating unit is controlled according to a predetermined 1 st heat amount to cook the cooking object,

in the 2 nd cooking mode, when the cooking oil is a predetermined 2 nd oil amount larger than the 1 st oil amount and the cooking object is a predetermined 2 nd rated amount larger than the 1 st rated amount, the heating unit is controlled to cook the cooking object with a predetermined 2 nd heat amount larger than the 1 st heat amount.

2. A deep fryer, comprising:

an oil tank which stores cooking oil;

a heating unit disposed in the oil tank, heating the cooking oil; and

a control unit that controls the heating unit;

the deep fryer is capable of performing a 1 st cooking mode and a 2 nd cooking mode respectively,

in the 1 st cooking mode, the cooking oil stored in the oil tank is set to a predetermined 1 st oil amount, and the cooking object is set to a predetermined 1 st rated amount, and the heating unit is set to a predetermined 1 st heat amount to cook the cooking object,

in the 2 nd cooking mode, the cooking oil is set to a predetermined 2 nd oil amount larger than the 1 st oil amount, the cooking object is set to a predetermined 2 nd rated amount larger than the 1 st rated amount, and the heating means is set to a predetermined 2 nd heat amount larger than the 1 st heat amount to cook the cooking object.

3. Fryer according to claim 1 or 2,

the fryer has a gas burner and an electric heater as said heating unit,

the control unit operates only the gas burner in the 1 st cooking mode and operates the gas burner together with the electric heater in the 2 nd cooking mode.