Flyer

Abstract

To execute subsequent additional supply of oil appropriately even when automatic additional supply of oil based on the number of times of cooking is stopped on the way.SOLUTION: A fryer 1 includes: an oil tank 3; a pulse combustor 4; additional oil supply means (an additional oil supply tank 45, an additional oil supply pipe 49, an additional oil supply pump 50, and an additional oil supply electromagnetic valve 51), and a burner controller 70. The burner controller 70 counts the number of times of cooking when cooking is ended, actuates the additional oil supply means when the counted number of times of cooking reaches the set number of times, and causes it to replenish cooking oil in the rating additional supply oil amount from the additional oil supply tank 45. The burner controller 70 calculates an actual additional supply oil amount from the start of the actuation when the additional oil supply means is actuated, calculates the radio of the actual additional supply oil amount to the rating additional supply oil amount when the actuation of the additional oil supply means is stopped before the actual additional supply oil amount reaches the rating additional supply oil amount, and changes the set number of times that the additional oil supply means is actuated next on the basis of the ratio.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a commercial fryer that heats cooking oil in an oil tank and heats and cooks an object to be cooked by putting the object to be cooked into the oil tank.

Background Art

[0002] A fryer heats and cooks an object to be cooked such as potatoes put into an oil tank by heating the cooking oil contained in the oil tank to a predetermined cooking temperature by heating means such as a burner or a pulse combustor. The cooking oil in the oil tank decreases due to the oil absorbed by the object to be cooked as the number of times of heating and cooking increases. Therefore, Patent Document 1 discloses a fryer in which a one-bushel can containing cooking oil (solid oil) is arranged in a container body and kept warm by an electric heater, an oil level thermistor for detecting the position of the oil level is provided in the oil tank, and when the decrease in the detected temperature of the oil level thermistor is confirmed to indicate a decrease in the oil level, a pump provided in a pipe connecting the one-bushel can to the oil tank is operated to add a predetermined amount of cooking oil.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In an actual store, since the type of the object to be cooked put into the oil tank, the amount of each input, the weight of the cooking oil in that case, the temperature change, and the cooking time are determined, the amount of oil consumed per cooking is substantially constant. Therefore, as the timing for adding oil, in addition to detecting a decrease in the oil level by an oil level thermistor, there may be a case where the oil is automatically added when the number of times of heat cooking executed in a predetermined cooking mode reaches a set number of times. In this case, the set number of times is set to be less than the number of times of cooking that may cause a change in the quality of the object to be cooked. When the number of cooking times reaches the set number of times, the amount of oil obtained by multiplying the amount of oil consumed per cooking by the set number of times is replenished as the rated additional oil amount. However, when an order is received during the oil addition in a store, etc., it may be possible to stop the oil addition midway and prioritize the heat cooking. In this case, if the oil addition is resumed after the heat cooking and the rated additional oil amount is replenished, depending on the amount of oil actually replenished before stopping the oil addition, it may result in excessive oil addition, which is uneconomical, and it is also likely to cause oil splashing or a change in the finish of the object to be cooked.

[0005] Therefore, an object of the present disclosure is to provide a fryer that can appropriately perform subsequent oil addition even if the automatic oil addition based on the number of cooking times stops midway.

Means for Solving the Problems

[0006] To achieve the above object, the present disclosure includes an oil tank capable of storing cooking oil, heating means provided in the oil tank for heating the cooking oil, an additional oil tank installed outside the oil tank for storing cooking oil, additional oil means for replenishing the cooking oil from the additional oil tank into the oil tank, control means for controlling the heating means and the additional oil means, and includes, the control means controls the heating means based on a predetermined cooking mode set in advance to execute heat cooking, and counts the number of cooking times as the heat cooking ends. When the counted number of cooking times reaches a set number of times set in advance, the additional oil means is operated to replenish the cooking oil of the rated additional oil amount from the additional oil tank. It is a fryer, When the oil replenishing means operates, the control means calculates the actual oil replenishment amount, which is the actual amount of cooking oil replenished from the start of operation, When the operation of the oil replenishing means is stopped before the actual oil replenishment amount reaches the rated oil replenishment amount, the ratio of the actual oil replenishment amount to the rated oil replenishment amount is calculated, and based on the ratio, the mode of operating the oil replenishing means next is changed. Another aspect of the present disclosure is that, in the above configuration, the change in the mode of operating the oil replenishing means is characterized in that the set number of times of operating the oil replenishing means next is changed based on the set number of times and the ratio. Another aspect of the present disclosure is that, in the above configuration, the oil replenishing means includes a pipe connecting the oil replenishing tank and the oil tank, a pump provided in the pipe, and a solenoid valve for opening and closing the pipe. The control means calculates the actual oil replenishment amount based on the operating time of the pump from the start to the stop of the operation of the oil replenishing means and the forward delivery capacity of the pump.

Advantages of the Invention

[0007] According to the present disclosure, when the operation of the oil replenishing means is stopped before the actual oil replenishment amount reaches the rated oil replenishment amount, the mode of operating the oil replenishing means next is changed based on the ratio of the actual oil replenishment amount to the rated oil replenishment amount. Therefore, even if the automatic oil replenishment based on the number of cooking times stops midway, the subsequent oil replenishment can be appropriately performed in the changed mode. According to another aspect of the present disclosure, in addition to the above effect, the change in the mode of operating the oil replenishing means changes the set number of times based on the set number of times and the ratio. Therefore, appropriate oil replenishment is possible by changing the timing of oil replenishment. According to another aspect of the present disclosure, in addition to the above effect, an accurate actual oil replenishment amount can be obtained based on the operating time of the pump and the forward delivery capacity.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of a fryer, and FIG. 2 is a schematic diagram of the fryer. This fryer 1 is provided with a pair of left and right oil tanks 3, 3 at the upper part inside the container body 2. At the bottom of each oil tank 3, a pair of left and right pulse burners 4, 4 as heating means are respectively provided. Each pulse burner 4 has a combustion chamber 5 provided on the inner wall on the front side of the oil tank 3, and a tail pipe 6 connected to the combustion chamber 5 and meandering inside the oil tank 3. Since the configuration of each oil tank 3 and its combustion system and exhaust system are the same on the left and right, hereinafter, mainly the oil tank 3 on the left side of FIG. 1 will be described.

[0010] The oil tank 3 has a first cooking section 7 and a second cooking section 8. The first cooking section 7 is formed above the pulse burner 4 and has a rectangular tube shape with a constant opening area in the vertical direction. The second cooking section 8 is located above the first cooking section 7 and is formed in an inverted taper shape that expands forward, backward, left, and right as it goes upward from the upper end of the first cooking section 7. The upper end up to the second cooking section 8 is the storage section for cooking oil. A basket 9 containing an object to be cooked such as potatoes can be inserted into the oil tank 3. A net 10 for receiving the basket 9 is provided above the pulse burners 4, 4. Below the upper end surface of the first cooking section 7, a first oil level temperature sensor 11 is provided. Above the upper end surface of the first cooking section 7 and below the upper end surface of the second cooking section 8, a second oil level temperature sensor 12 is provided. Near the tail pipe 6 of the pulse combustor 4 in the oil tank 3, a cooking temperature sensor 13 is provided. A thermistor is used for each temperature sensor. An electric heater 33 is provided on the lower outer peripheral surface of the oil tank 3.

[0011] Behind the oil tank 3 and above the body 2, an oil replenishment tank 14 for storing cooking oil is provided. On the lower surface of the oil replenishment tank 14, an oil replenishment pipe 15 connected to the second cooking section 8 at the rear of the oil tank 3 is connected. An oil replenishment valve 16 that opens and closes manually is provided on the oil replenishment pipe 15. An oil replenishment opening / closing detection unit (for example, a reed switch) 55 for detecting the open / closed state is provided on the oil replenishment valve 16. An oil replenishment temperature sensor 17 for detecting the temperature of the stored cooking oil is provided in the oil replenishment tank 14. An overflow section 18 is provided on the front surface of the oil replenishment tank 14. The overflow section 18 is formed by a pipe connected to the front surface of the oil replenishment tank 14, a flow path formed vertically on the front surface of the oil replenishment tank 14, etc. The upper end of the overflow section 18 is connected to an opening formed in the upper part of the front surface of the oil replenishment tank 14 and hangs down, and the lower end of the overflow section 18 is connected to the inner surface of the rear part in the oil tank 3 via an outlet 19. Therefore, when the cooking oil in the oil replenishment tank 14 exceeds the lower edge of the opening, the overflowed cooking oil flows down into the oil tank 3 along the inner surface of the rear part of the oil tank 3 from the outlet 19.

[0012] An air chamber 20 is provided outside the front side of the oil tank 3. Inside the air chamber 20, a mixing chamber (not shown) communicating with the combustion chamber 5 is provided. A gas conduit 21 equipped with a gas solenoid valve 22 is connected to the mixing chamber to supply fuel gas. Also, an air supply pipe 23 is connected to the mixing chamber. The air supply pipe 23 is connected to a fan 24 provided at the lower part of the body 2 to supply combustion air. The tail pipes 6, 6 of the pulse combustors 4, 4 are arranged in a serpentine shape at the lower part of the oil tank 3 and then connected to the exhaust pipes 25, 25 drawn out from the air chamber 20. These exhaust pipes 25, 25 have mufflers 26, 26 arranged at the rear part of the body 2. The mufflers 26, 26 are arranged upward in contact with the rear surface of the fuel increasing tank 14 so as to be able to discharge the combustion exhaust gas. The fuel increasing tank 14 and the mufflers 26, 26 are covered by an exhaust pipe cover 27 provided on the body 2. Protection covers 28 are provided on the front surfaces of the left and right exhaust pipe covers 27, 27. Basket hangers 29, 29 for suspending and supporting the baskets 9, 9 are fixed to the protection cover 28. The outlet 19 of the overflow part 18 is provided below the basket hanger 29.

[0013] A filtering tank 30 having a filter at the bottom is provided at the bottom of the body 2. An oil discharge pipe 31 is connected to the bottom of the oil tank 3 so that the cooking oil in the oil tank 3 can be discharged to the filtering tank 30 through the oil discharge pipe 31. An oil discharge valve 32 that is manually operated to open the valve is provided on the oil discharge pipe 31. A filtering pump 35 is provided at the lower part of the body 2. The suction side of the filtering pump 35 is connected to the bottom of the filtering tank 30 through a suction pipe 36. The discharge side of the filtering pump 35 branches into a first oil supply pipe 37 and a second oil supply pipe 38. The first oil supply pipe 37 is connected to the oil increasing pipe 15 upstream of the fuel increasing valve 16. A first oil supply valve 39 that is manually operated to open and close is provided on the first oil supply pipe 37. A fuel supply opening / closing detection part (for example, a reed switch) 56 for detecting the open / closed state is provided on the first oil supply valve 39. The second oil supply pipe 38 is connected to the lower part of the oil tank 3. A second oil supply valve 40 that is manually operated to open and close is provided on the second oil supply pipe 38.

[0014] Below the oil tank 3, an additional oil tank 45 using a one-bucket can is provided. The additional oil tank 45 is installed on a mounting base 46 provided on the container body 2. The mounting base 46 is provided with a heat preservation heater 47 for heating the additional oil tank 45 and a tank temperature sensor 48 for detecting the temperature of the additional oil tank 45. The lower end of an additional oil pipe 49 is inserted into the additional oil tank 45. The upper end of the additional oil pipe 49 is connected to the oil tank 3 above the second cooking unit 8. The additional oil pipe 49 is provided with an additional oil pump 50 and an additional oil solenoid valve 51 from the upstream side.

[0015] A fry controller 60 is provided at the upper front part of the container body 2. The fry controller 60 is equipped with an operation panel 61. As shown in FIG. 3, the operation panel 61 includes a power switch 62, a plurality of cooking buttons 63, 63··, display units 64, 64 for the selected cooking mode and maintenance menu, etc., in addition to a mode selection button 65 for selecting the cooking mode and rated quantity display lamps 66A, 66B for displaying the rated quantity. The rated quantity display lamp 66A corresponds to the first rated quantity, and the rated quantity display lamp 66B corresponds to the second rated quantity respectively. A burner controller 70 is provided at the lower part of the container body 2. The burner controller 70 includes a timer 71 and a storage unit 72, and according to the cooking mode instructed by the fry controller 60, based on the program stored in the storage unit 72, it performs ON / OFF control of the pulse combustor 4 to cook the object to be cooked such as potatoes. Detection signals such as the first and second oil surface temperature sensors 11, 12, the cooking temperature sensor 13, the additional oil temperature sensor 17, the tank temperature sensor 48, the additional oil opening / closing detection unit 55, and the oil supply opening / closing detection unit 56 are input to the burner controller 70. Based on these detection signals and the instructions from the operation panel 61, the burner controller 70 controls the pulse combustor 4, the gas solenoid valve 22, the fan 24, the electric heater 33, the filtering pump 35, the heat preservation heater 47, the additional oil pump 50, the additional oil solenoid valve 51, etc.

[0016] In the fryer 1 configured as described above, the amount of the object to be cooked at one time is defined in two types, a predetermined first rated amount and a second rated amount larger than the first rated amount, and it is possible to cook in a first cooking mode corresponding to the first rated amount and a second cooking mode corresponding to the second rated amount. In the oil replenishing tank 14, cooking oil in a full state (oil replenishment) is stored. (First cooking mode) First, when cooking an object to be cooked in the first rated amount, as shown by the hatching in Fig. 4(A), cooking oil (the first rated oil amount) is stored in the oil tank 3 up to the upper end of the first cooking section 7. In this state, when the operator turns on the power switch 62 of the operation panel 61, the burner controller 70 that has confirmed the cooking oil up to the upper end of the first cooking section 7 with the first oil surface temperature sensor 11 rotates the fan 24 for a predetermined time to supply air, and then intermittently burns the mixed gas in the combustion chamber 5 to operate the pulse burner 4 in an ON / OFF manner. That is, the mixed gas is ignited in the combustion chamber 5 and explosion combustion occurs in the combustion chamber 5, and the combustion exhaust is forcibly discharged to the tail pipe 6 due to the pressure increase in the combustion chamber 5 accompanying the combustion. Then, fuel gas and combustion air are inhaled into the combustion chamber 5 that becomes negative pressure due to the discharge of the combustion exhaust. By repeating this ON / OFF operation, the cooking oil stored in the oil tank 3 is heated. The burner controller 70 monitors the detected temperature obtained from the cooking temperature sensor 13. When it is confirmed that the temperature of the cooking oil has reached a predetermined cooking temperature (for example, 160°C), the fry controller 60 notifies by outputting a display of cooking OK to the display section 64 of the operation panel 61.

[0017] Next, the operator selects the first cooking mode with the mode selection button 65. Then, the fry controller 60 causes the display section 64 to display that it is the first cooking mode, and lights the rated amount display lamp 66A to notify that it is the first rated amount. When this notification is made, the operator puts the basket containing the object to be cooked in the first rated amount into the oil tank 3. At this time, on the operation panel 61, since the display section 64 displays the first cooking mode and the rated amount display lamp 66A is lit, the possibility that the operator puts the wrong amount of the object to be cooked is reduced. When the cook presses the cooking start button (here, the leftmost cooking button 63), the burner controller 70 cooks the food to be cooked with the first cooking time preset in the storage unit 72 corresponding to the first rated amount and the first calorific value of the pulse combustor 4. When the first cooking time runs out due to the count by the timer 71, the fry controller 60 sounds an alarm to notify the end of cooking. Therefore, the cook pulls up the basket 9 from the oil tank 3. When continuing to cook with the first rated amount, if the food to be cooked is put in and the cooking start button is pressed, the same control is repeated.

[0018] (Switching from the first cooking mode to the second cooking mode) When switching from the first cooking mode to the second cooking mode, it is necessary to increase the cooking oil from the oil increasing tank 14. Therefore, when the cook manually operates the oil increasing valve 16 to open it, as shown by the hatching in Fig. 4(B), the cooking oil for the increased amount in the oil increasing tank 14 is supplied through the oil increasing pipe 15 to the upper end of the second cooking section 8 of the oil tank 3, and the oil increasing tank 14 becomes empty. The valve opening operation of the oil increasing valve 16 is detected by the burner controller 70 through the oil increasing open / close detection section 55. When the oil increasing valve 16 is closed and this valve closing operation is detected by the burner controller 70 through the oil increasing open / close detection section 55, the fry controller 60 displays on the display section 64 that it is in the second cooking mode, turns off the rated amount display lamp 66A and turns on the rated amount display lamp 66B to notify the switching to the second rated amount. This mode switching notification may be performed immediately after detecting the valve opening - valve closing of the oil increasing valve 16, or a predetermined oil increasing completion time (for example, 1 minute) may be counted between the valve opening and the valve closing, and the notification may be performed after confirming that the valve has been closed after the elapse of the time. An oil increasing completion time for counting for a while after the valve closing may also be set.

[0019] On the other hand, the burner controller 70 switches the sensor for detecting the oil level position to the second oil surface temperature sensor 12 by detecting the valve opening operation of the oil increasing valve 16 by the oil increasing open / close detection section 55. Therefore, when the second oil level temperature sensor 12 confirms that the cooking oil supplied to the oil tank 3 has reached the upper end of the second cooking unit 8 (second rated oil volume), the detected temperature obtained from the cooking temperature sensor 13 is monitored. When it is confirmed that the temperature of the cooking oil has reached a predetermined cooking temperature, the fry controller 60 notifies by outputting a "Cooking OK" display on the display unit 64 of the operation panel 61 and the like.

[0020] When this notification is made, the cook puts the basket 9 containing the object to be cooked at the second rated quantity into the oil tank 3. At this time, on the operation panel 61, since the second cooking mode is displayed on the display unit 64 and the rated quantity display lamp 66B is lit, the possibility that the cook misjudges the quantity of the object to be cooked to be put in is reduced. When the cook presses the cooking start button, the burner controller 70 performs heating and cooking of the object to be cooked with a second cooking time preset in the storage unit 72 corresponding to the second rated quantity and a second calorific value greater than the first calorific value in the first cooking mode. This second calorific value can be obtained by operating the electric heater 33 in addition to the pulse combustor 4. However, the gas input may be increased only by the pulse combustor 4 without using the electric heater 33 to obtain the second calorific value. When the second cooking time runs out by the count of the timer 71, the fry controller 60 sounds an alarm to notify the end of cooking. The cook pulls up the basket 9 from the oil tank 3. When continuing to cook at the second rated quantity, if the object to be cooked is put in and the cooking start button is pressed, the same control is repeated.

[0021] (Switching from the second cooking mode to the first cooking mode) When switching from the second cooking mode to the first cooking mode with a smaller oil volume, the cook opens the drain valve 32 from the state of the second rated oil volume shown in Fig. 4(B) and drops all the cooking oil in the oil tank 3 into the filtering tank 30 as shown by the hatching in Fig. 5(A). Next, the first fuel supply valve 39 of the first fuel supply pipe 37 is set to the open state, the second fuel supply valve 40 of the second fuel supply pipe 38 is set to the closed state, and the fuel increasing valve 16 of the fuel increasing pipe 15 is set to the closed state. Then, the burner controller 70 that detects the opening of the first fuel supply valve 39 by the fuel supply opening / closing detection unit 56 drives the filtering pump 35. Therefore, the cooking oil in the filtering tank 30 is filtered and then supplied to the fuel increasing tank 14 through the first fuel supply pipe 37 and the fuel increasing pipe 15. When the fuel increasing tank 14 is full, as shown in FIG. 5(B), the cooking oil is supplied to the oil tank 3 through the overflow portion 18. When filtering is performed until the filtering tank 30 becomes empty, as shown in FIG. 4(A), the cooking oil of the second rated oil volume supplied to the fuel increasing tank 14 is supplied to the oil tank 3 through the overflow portion 18, leaving only the increased oil volume from the first rated oil volume. That is, the cooking oil of the first rated oil volume used in the first cooking mode is stored in the oil tank 3.

[0022] Then, when the filtering is completed and the cook closes the first fuel supply valve 39, and the burner controller 70 detects this closing through the fuel supply opening / closing detection unit 56, the drive of the filtering pump 35 is stopped. Then, the fry controller 60 that obtains the closing valve information of the first fuel supply valve 39 from the burner controller 70 by the fuel supply opening / closing detection unit 56 displays on the display unit 64 that it is the first cooking mode, turns off the rated quantity display lamp 66B, and turns on the rated quantity display lamp 66A. This mode switching notification may also be performed immediately when the opening and closing of the first fuel supply valve 39 are detected, or a predetermined fuel supply completion time (for example, 1 minute) may be counted between the opening and closing, and after confirming that the valve is closed after the elapse of this time. A fuel supply completion time for counting for a while after the valve is closed may also be set. On the other hand, the burner controller 70 switches the sensor for detecting the oil level position to the first oil surface temperature sensor 11 by detecting the opening operation of the first fuel supply valve 39 by the fuel supply opening / closing detection unit 56, and executes the above-described first cooking mode.

[0023] In each cooking mode, since the type of the object to be cooked put into the oil tank, the amount put in each time, the weight of the cooking oil in that case, the temperature change, and the cooking time are determined, the approximate amount of oil consumed each time cooking is carried out is known. Therefore, based on the program stored in the memory unit 72, the burner controller 70 counts the number of times of heating cooking for each cooking mode, and when the counted number of cooking times reaches the preset number of times, it replenishes the rated additional oil amount calculated by multiplying the amount of oil consumed each time cooking by the preset number of times from the additional oil tank 45 into the oil tank 3. Hereinafter, this additional oil control will be described based on the flowchart of FIG. 6. First, when the heating cooking starts in step (hereinafter referred to as "S") 1, in S2, the cooking oil in the additional oil tank 45 is kept warm. Here, the detected temperature obtained from the tank temperature sensor 48 is monitored, and the heat preservation heater 47 is controlled to be turned on / off so that a predetermined heat preservation temperature is maintained in the additional oil tank 45. When it is confirmed in S3 that the heating cooking has ended, in S4, the cooking times are incremented by 1. Next, in S5, it is determined whether or not the counted number of cooking times has reached the preset number of times. If it is less than the preset number of times, the process returns to S1.

[0024] On the other hand, when it is confirmed in S5 that the cooking times have reached the preset number of times, additional oil is supplied in S6. This additional oil supply is performed by driving the additional oil pump 50 and opening the additional oil solenoid valve 51 for a predetermined time. Then, the liquefied cooking oil in the additional oil tank 45 is directly supplied to the oil tank 3 through the additional oil pipe 49. This supply amount is the rated additional oil amount obtained by multiplying the amount of oil consumed each time cooking by the preset number of times. If it is not confirmed in S7 that the additional oil supply has stopped by the operation of the operation panel 61, the control ends after waiting in S8 for the confirmation of the end of the additional oil supply of the rated additional oil amount. Then, when it becomes necessary to perform cooking by heating due to a new order being placed during the additional oil supply, the cook stops the additional oil supply by operating the operation panel 61 and performs cooking of the object to be cooked. When the stop of this additional oil supply is confirmed at S7, at S9, the burner controller 70 calculates the actual additional oil quantity, which is the quantity of oil actually supplied to the oil tank 3, based on the operation time of the additional oil pump 50 from the start to the stop of the additional oil supply and the forward feeding capacity of the additional oil pump 50, and obtains the ratio to the rated additional oil quantity. Then, based on the obtained ratio and the current set number of times, the set number of times until the next additional oil supply is changed, and this control is ended.

[0025] Therefore, when cooking by heating is performed again from S1 in the same cooking mode and the cooking count is counted at S4, at S5, the counted cooking count is compared with the changed set number of times. If the cooking count has reached the changed set number of times here, additional oil supply will be executed at S6. For example, when the oil consumption per cooking is 50 ml, the initial set number of times for additional oil supply is 10 times, and the rated additional oil quantity is 500 ml, if it is calculated that about 250 ml of oil, which is half of the rated additional oil quantity, has been replenished due to the stop of the additional oil supply, the set number of times for the next additional oil supply is changed to 5 times. Therefore, when the cooking count reaches 5 times, additional oil supply will be executed. Also in this case, if the additional oil supply is stopped midway, the set number of times is changed at S9. This counted cooking count and the changed set number of times are reset when switching from the first cooking mode to the second cooking mode, or from the second cooking mode to the first cooking mode.

[0026] Thus, the fryer 1 of the above form includes an oil tank 3 capable of accommodating cooking oil, a pulse combustor 4 (heating means) provided in the oil tank 3 for heating the cooking oil, a topping oil tank 45 installed outside the oil tank 3 for storing the cooking oil, a topping oil pipe 49, a topping oil pump 50, and a topping oil solenoid valve 51 (topping oil means) for replenishing the cooking oil from the topping oil tank 45 into the oil tank 3, and a burner controller 70 for controlling the pulse combustor 4 and the topping oil means. The burner controller 70 controls the pulse combustor 4 based on preset first and second cooking modes (predetermined cooking modes) to perform heating cooking, counts the number of cooking times as the heating cooking ends, and when the counted number of cooking times reaches a preset number of times, activates the topping oil means to replenish the cooking oil of the rated topping oil amount from the topping oil tank 45. And when the topping oil means is activated, the burner controller 70 calculates the actual topping oil amount, which is the actual replenishment amount of the cooking oil from the start of activation, and when the operation of the topping oil means is stopped before the actual topping oil amount reaches the rated topping oil amount, calculates the ratio of the actual topping oil amount to the rated topping oil amount, and based on this ratio, changes the set number of times (mode) for activating the topping oil means next time. According to this configuration, even if the automatic topping oil based on the number of cooking times stops halfway, the subsequent topping oil can be appropriately performed based on the changed mode.

[0027] In particular, the change in the mode of activating the topping oil means is to change the set number of times for activating the topping oil means next time based on the set number of times and the ratio, so appropriate topping oil is possible by changing the timing of the topping oil. The topping oil means includes a topping oil pipe 49 (pipe) connecting the topping oil tank 45 and the oil tank 3, a topping oil pump 50 (pump) provided in the topping oil pipe 49, and a topping oil solenoid valve 51 (solenoid valve) for opening and closing the topping oil pipe 49. The burner controller 70 calculates the actual topping oil amount based on the operation time of the topping oil pump 50 from the start to the stop of the operation of the topping oil means and the forward delivery capacity of the topping oil pump 50. Therefore, an accurate actual topping oil amount can be obtained.

[0028] The following describes the modification examples. The modification of the mode of operating the additional oil means is not limited to the modification of the set number of times. For example, without changing the set number of times, when the number of cooking times after the additional oil stops reaches the set number of times, the remaining amount obtained by subtracting the actual additional oil amount from the rated additional oil amount can be replenished. In this case, appropriate additional oil can be achieved by changing the amount of additional oil. In the above embodiment, when adding oil from the additional oil tank, the additional oil valve is configured to be manually opened. However, the additional oil valve may be an electromagnetic valve, and the additional oil valve may be automatically opened by operating the operation panel to perform the additional oil operation. In this case, the additional oil tank can be used as the additional oil means together with the additional oil valve serving as an electromagnetic valve and the additional oil pipe. In the case of this additional oil means, the rated additional oil amount is determined by the flow rate per unit time of the additional oil pipe and the opening time of the additional oil valve. The actual additional oil amount is also calculated based on the flow rate per unit time of the additional oil pipe and the opening time of the additional oil valve until the additional oil stops.

[0029] On the other hand, in the above embodiment, when reducing oil, the first fuel supply valve is manually opened to return the filtered cooking oil to the oil tank through the additional oil tank, but it is not limited to this. For example, the drain valve and the first fuel supply valve may be electromagnetic valves, and both valves may be automatically opened by operating the operation panel for filtering. Also, the oil reduction may be an operation of reducing the cooking oil in the oil tank by manually opening or automatically opening only the drain valve.

[0030] The fryer is not limited to one in which the fry controller and the burner controller are provided separately, and may be one equipped with a single controller having both functions of the fry controller and the burner controller. The heating means may be formed only by a pulse combustor, or may be formed only by an electric heater. Also, the heating means may be formed only by a gas burner provided outside the oil tank. Furthermore, the heating means may be formed by a combination other than the combination of a pulse combustor and an electric heater. In the above-described embodiment, a pair of left and right oil tanks are provided, but there may be one oil tank, or conversely, three or more oil tanks.

Explanation of Reference Numerals

[0031] 1 ··· Fryer, 2 ··· Body, 3 ··· Oil tank, 4 ··· Pulse combustor, 5 ··· Combustion chamber, 6 ··· Tail pipe, 7 ··· First cooking section, 8 ··· Second cooking section, 9 ··· Basket, 11 ··· First oil level temperature sensor, 12 ··· Second oil level temperature sensor, 13 ··· Cooking temperature sensor, 14 ··· Oil increasing tank, 15 ··· Oil increasing pipe, 16 ··· Oil increasing valve, 18 ··· Overflow section, 22 ··· Gas solenoid valve, 30 ··· Filtering tank, 35 ··· Filtering pump, 37 ··· First oil supply pipe, 38 ··· Second oil supply pipe, 39 ··· First oil supply valve, 40 ··· Second oil supply valve, 55 ··· Oil increasing opening / closing detection section, 56 ··· Oil supply opening / closing detection section, 60 ··· Fry controller, 61 ··· Operation panel, 62 ··· Power switch, 63 ··· Cooking button, 64 ··· Display section, 65 ··· Mode selection button, 66A, 66B ··· Rated quantity display lamps, 70 ··· Burner controller, 71 ··· Timer, 72 ··· Memory section.

Claims

1. An oil tank capable of containing cooking oil, heating means provided in the oil tank for heating the cooking oil, a topping oil tank installed outside the oil tank for storing cooking oil, topping oil means for replenishing the cooking oil from the topping oil tank into the oil tank, control means for controlling the heating means and the topping oil means, and the control means controls the heating means based on a preset cooking mode to perform heating cooking, counts the number of cooking times with the completion of the heating cooking, and when the counted number of cooking times reaches a preset number of times, operates the topping oil means to replenish the cooking oil of the rated topping oil amount from the topping oil tank, a fryer characterized in that when the topping oil means operates, the control means calculates an actual topping oil amount which is the actual replenishment amount of the cooking oil from the start of operation, when the operation of the topping oil means is stopped before the actual topping oil amount reaches the rated topping oil amount, calculates a ratio of the actual topping oil amount to the rated topping oil amount, and changes the mode of operating the topping oil means next based on the ratio, a fryer characterized in that.

2. The fryer according to claim 1, wherein the change in the mode of operating the topping oil means is to change the preset number of times of operating the topping oil means next based on the preset number of times and the ratio.

3. The topping oil means includes a pipe connecting the topping oil tank and the oil tank, a pump provided in the pipe, and a solenoid valve for opening and closing the pipe, The fryer according to claim 1 or 2, wherein the control means calculates the actual topping oil amount based on the operation time of the pump from the start to the stop of the operation of the topping oil means and the forward feeding capacity of the pump.

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