JP2009066152A - Fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fryer capable of suppressing the waste of a material to be cooked inside a basket when cooking is canceled. <P>SOLUTION: In the fryer 1, a lift 13 for elevating and lowering the basket 11 capable of housing a food material alternately repeats lowering to a cooking position and elevating to a preparation position by a motor rotated only in one direction. Then, after a menu switch for starting cooking in the fryer 1 is pressed, when a cancellation switch for cooking cancellation is operated, the motor is controlled so as to move the lift 13 to a non-cooking position above a liquid surface when the lift 13 is at the cooking position, and the motor is controlled so as to stop the lift 13 when the lift 13 is at the non-cooking position in the middle of lowering to the cooking position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fryer of a type that cooks a material to be cooked by immersing a basket capable of accommodating the material to be cooked in heated cooking oil in an oil tank.

Conventionally, a flyer described in Patent Document 1 below is known as a technology in such a field. This fryer includes an oil tank in which cooking oil heated by a heater is stored, and a lift that lifts and lowers a basket in which food is stored. When the operation of starting the cooking of the fryer is performed, the lift descends so as to immerse the basket in the cooking oil. After a predetermined cooking time elapses, the lift automatically rises to lift the basket from the cooking oil. To be controlled. As a drive source that makes it possible to lift and lower such a lift, a motor capable of forward and reverse rotation is conceivable. However, since the lift lifting mechanism of the flyer disclosed in Patent Document 1 can convert rotation in one direction of the motor into lifting lift, a motor that rotates only in one direction can be obtained from the viewpoint of compactness of the equipment and cost reduction. Adopted as a drive source. In this case, as the motor rotates in one direction, the lift repeats alternately lowering the bottom dead center to the cooking position and raising the top dead center to the preparation position.
Japanese Patent Laid-Open No. 10-328039

  However, in this type of fryer, it may be desired to cancel cooking after the cooking start operation. When such a cancel operation is accepted, cooking can be stopped by forcibly raising the lift to the preparation position and lifting the basket from the cooking oil even during cooking. However, when a cancel operation is performed in the middle of lowering of the lift immediately after the start of cooking, according to the flyer of Patent Document 1, the lift in the middle of lowering cannot be immediately raised on the lift raising / lowering mechanism. It is necessary to raise it after reaching. In this case, the uncooked food material in the basket may be temporarily immersed in the cooking oil, and the food material may be wasted.

  Therefore, the present invention provides a fryer that moves up and down a basket that can accommodate a material to be cooked using a motor that rotates only in one direction as a drive source, and that can suppress waste of the material to be cooked in the basket when cooking is canceled. The purpose is to provide.

  The fryer of the present invention holds a basket capable of accommodating a material to be cooked, and alternately repeats lowering to the bottom dead center and rising to the top dead center by a motor that rotates only in one direction, In a fryer equipped with a lift that can be moved to a cooking position where the cooking material is cooked by being immersed in heated cooking oil and a non-cooking position where the cooking material in the basket is separated from the cooking oil. The cooking execution switch that accepts the operation of cooking the material and when the cooking execution switch is operated, the motor is controlled so that the lift is lowered from the non-cooking position to the cooking position, and then the lift is raised again to the non-cooking position. And a cancel switch that accepts an operation for canceling the cooking operation performed by the cooking execution switch. The lift control unit includes a cooking execution switch. When the cancel switch is operated after the is operated, the motor is controlled to move the lift to the non-cooking position when the lift is in the cooking position, and the lift is in the non-cooking position while being lowered to the cooking position. The motor is sometimes controlled to stop the lift.

  In this fryer, the basket in which the material to be cooked is held is held by a lift, and the lift is rotated alternately in one direction, and the descent to the bottom dead center and the rise to the top dead center are alternately repeated. To work. When the cooking execution switch of the fryer is operated, the lift is lowered from the non-cooking position to the cooking position, so that the basket is immersed in cooking oil and the material to be cooked in the basket is cooked. If the cancel switch is operated while the lift is in the cooking position, the lift is moved to the non-cooking position by motor control, so that the cooking material in the basket is forcibly pulled up from the cooking oil and cooked quickly. Can be interrupted. On the other hand, when the cancel switch is operated when the lift is in the middle of the lowering and in the non-cooking position, the lift is stopped instead of moving the lift to the non-cooking position. In other words, if it is attempted to move the lift in the middle of the descent to the non-cooking position, it is necessary to lower the lift to the bottom dead center. At this time, the cooking material to which cooking oil has not yet adhered is wasted. It will be immersed in cooking oil. On the other hand, in the flyer of the present invention, since the lift is stopped, the material to be cooked can be removed from the stopped lift, and the situation where it is immersed in cooking oil wastefully can be avoided. .

  Further, in the flyer of the present invention, the lift control unit moves the cooking position and the cooking material in the basket to the level of the cooking oil when the cancel switch is operated after the cooking execution switch is operated. The motor may be controlled so that the lift is moved to the non-cooking position when it is in the incomplete cooking position between the contact position and the contact position.

  When the lift of the fryer is in the incomplete cooking position, the lift has not yet reached the cooking position, but the material to be cooked in the basket has already reached the level of the cooking oil. When the cancel switch is operated in such a state, the lift is moved to the non-cooking position, so that the material to be cooked that has been immersed in the cooking oil can be quickly pulled up from the cooking oil.

  In the flyer of the present invention, the lift control unit controls the motor to move the lift to the non-cooking position when the cancel switch is operated again after the lift is stopped according to the operation of the cancel switch. It is good to do.

  According to this configuration, the user can return the lift to the non-cooking position by stopping the lift by operating the cancel switch, removing the material to be cooked from the stopped lift, and then operating the cancel switch again. .

  According to the flyer of the present invention, a basket that can accommodate a cooking material can be raised and lowered using a motor that rotates only in one direction as a drive source, and waste of the cooking material in the basket when cooking is canceled can be suppressed.

  Hereinafter, preferred embodiments of a flyer according to the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the fryer 1 includes a cabinet 3 having an oil tank 2 for storing cooking oil L, and an oil temperature control heater 5 extending from the heater box 4 is disposed in the cabinet 3. ing. The heater 5 is rotated approximately 90 ° by the lever 6, and the heater 5 is accommodated in the oil tank 2 in a horizontal state during normal use. On the other hand, when the oil residue in the oil tank 2 is taken out or when the heater 5 or the maintenance in the oil tank 2 is necessary, the heater 5 is swung up by pushing up the lever 6.

  Further, an oil temperature thermistor 7 used for oil temperature control extends downward from the heater box 4 and is inserted into the oil tank 2. In addition, an electrical box 8 is provided on the front side of the oil tank 2 in the cabinet 3, and a microcomputer 9 (see FIG. 7) that controls each part of the fryer 1 is accommodated in the electrical box 8. .

  The flyer 1 is also provided with an autolift mechanism 12 for raising and lowering a basket 11 in which food is stored and taking it in and out of the oil tank 2. The autolift mechanism 12 includes a lift 13 that holds the basket 11 and a lift drive motor 15 that is a drive source for raising and lowering the lift 13. The lift 13 is configured such that two pillars are erected from the inside of the cabinet 3 on the back side of the oil tank 2, and a frame member 13b is suspended forward from a plate member 13a fixed to the upper ends of the two pillars. Yes. When the hook 11 a at the tip of the basket 11 is hooked on the frame member 13 b, the basket 11 is hooked on the lift 13. The basket 11 includes a side frame portion 11b made of a metal plate and a net portion 11c that extends horizontally at the inner lower portion of the side frame portion 11b. The foodstuff accommodated in the basket 11 is mounted on this net | network part 11c.

  As shown in FIG. 4, in the auto lift mechanism 12, the rotation of the motor 15 is converted into the lifting / lowering operation of the lift 13 via the rotating portion 17 and the link arms 19 a to 19 c. That is, when electric power is supplied to the motor 15 by the on / off control by the microcomputer 9, the motor 15 rotates and the rotating unit 17 attached to the shaft of the motor 15 rotates. When the rotating unit 17 rotates, the link arm 19a moves up and down. By the vertical movement of the link arm 19a, the link arm 19b rotates about the one end 19d fixed to the cabinet 3. Thus, when the other end 19e of the link arm 19b moves up and down, the up and down movement is transmitted to the lift 13 via the link arm 19c, and the lift 13 supported by the cabinet 3 so as to be slidable up and down moves up and down.

  And the recessed part 17a, 17b is formed in the circumferential surface of the said rotation part 17 in the position shifted in the front-back direction (rotation axis direction). The recesses 17a and 17b can be detected by two reed switches 21a and 21b fixed to the side of the rotating unit 17. In the rotating unit 17, the rotational position where the concave portion 17a is detected by the reed switch 21a corresponds to the top dead center of the lift 13, and the rotational position where the concave portion 17b is detected by the reed switch 21b is the bottom dead center of the lift 13. It is comprised so that it may correspond. The reed switch 21a transmits a top dead center detection signal to the microcomputer 9 when detecting the recess 17a, and the reed switch 21b checks the bottom dead for the microcomputer 9 when detecting the recess 17b. Send outgoing signal.

  As shown in FIG. 5 (a), the top dead center of the lift 13 is a stop position of the lift 13 before the start of cooking, and the basket 11 in which the food F is stored has the lift 13 at the top dead center. In position, it is attached to the lift 13 and prepared. Hereinafter, this lift position corresponding to the top dead center is referred to as “preparation position U”. Further, as shown in FIG. 5B, the bottom dead center of the lift is the position of the lift where the food F in the basket 11 is sufficiently immersed under the liquid level L1 of the cooking oil L in the oil tank 2, and cooking is started. Thereafter, the lift 13 stops at the position of this bottom dead center for a predetermined cooking time. Hereinafter, this lift position corresponding to the bottom dead center is referred to as “cooking position D”. Based on the above configuration, the microcomputer 9 can detect that the lift 13 has reached the preparation position U by the top dead center detection signal from the reed switch 21a, and detect the bottom dead center from the reed switch 21b. It can be detected from the signal that the lift 13 has reached the cooking position D. The microcomputer 9 can also detect the current position of the lift 13 based on the time for which the motor 15 is rotated when the lift 13 is raised and lowered.

  Here, as the motor 15 of the autolift mechanism 12, it is conceivable to employ either a motor that rotates only in one direction or a motor that rotates in both directions (forward rotation and reverse rotation). If a motor that can rotate in both directions is used and the movement direction of the lift is switched by reverse rotation of the motor, a greater force will be applied when switching the movement direction than in normal startup, and auto lift There is a problem that the burden on each part of the mechanism 12 is large. In addition, two relays for driving the motor are required. On the other hand, in a motor that rotates in only one direction, the load on the autolift mechanism 12 is small, so there are few failures and a single motor drive relay can be used. Easy to reduce costs. For this reason, a motor that rotates only in one direction is employed as the motor 15 of the autolift mechanism 12.

  Therefore, the motor 15 rotates forward when the power supply is received under the control of the microcomputer 9 and stops when the power supply stops, but cannot perform the reverse rotation. Based on such a configuration, according to the autolift mechanism 12, the lift 13 performs a lifting operation that alternately repeats the lowering to the cooking position D and the rising to the preparation position U.

  Further, as shown in FIG. 6, an operation panel 30 that receives a user operation is provided on the front surface of the cabinet 3 of the flyer 1. The operation panel 30 includes a power switch 31 for turning on / off the power of the fryer 1, switches SW <b> 1 to SW <b> 12 for selecting a setting according to the type of food and executing cooking, and an oil temperature / cooking time timer and the like. A setting button 37 for performing is provided. The operation panel 30 is also provided with display units 39a and 39b for displaying the remaining cooking time and displaying the set oil temperature. The operation panel 30 is also provided with a cancel switch 33 for canceling the cooking being performed.

  When the operation panel 30 is operated by the user, the microcomputer 9 accommodated in the electrical box 8 controls the heater 5, the motor 15 and the like according to a program prepared in advance, and realizes cooking of ingredients by the fryer 1. For example, when any one of the switches SW1 to SW12 of the operation panel 30 is pressed, the microcomputer 9 controls the oil temperature to a preset temperature by controlling the heater 5 using the oil temperature thermistor 7, The motor 15 is rotated to lower the lift 13 to the cooking position. Thus, the basket 11 and the food F in the basket 11 are immersed in the cooking oil L, and the frying cooking of the food F is started.

  After that, when a preset cooking time has elapsed, the microcomputer 9 rotates the motor 15 again to raise the lift 13 to the preparation position, thereby separating the food from the cooking oil L. If the user wishes to cancel cooking before the cooking time has elapsed, the cancel switch 33 is pressed on the operation panel 30. In this case, the microcomputer 9 forcibly raises the basket 11 and the food F from the cooking oil L by rotating the motor 15 and forcibly raising the lift 13 at the cooking position to the preparation position.

  Hereinafter, cooking of ingredients by the fryer 1 will be described in more detail with reference to the block diagram of the control system of the fryer 1 shown in FIG. 7 and the flowcharts shown in FIGS. 8 and 9.

  When cooking is started, the user sets the basket 11 containing the food F on the lift 13 in a state where the lift 13 is at the preparation position U (see FIG. 5A), and corresponds to the type of the food F. Press one of the menu switches SW1 to SW12. When the menu switches SW1 to SW12 are turned on, the microcomputer 9 sets a cooking time corresponding to the menu switch that is turned on (S802). Then, the microcomputer 9 supplies power to the motor 15 to turn on the motor 15 and start the descent of the lift 13 (S804). Thereafter, when the microcomputer 9 receives the bottom dead center detection signal from the reed switch 21b (“Yes” in S810), the microcomputer 9 starts counting down the cooking time (S812) and stops supplying power to the motor 15. Then, the motor 15 is turned off to stop the descent of the lift 13 (S814).

  By such processing, the lift 13 is accurately stopped at the cooking position D (see FIG. 5B), the food F in the basket 11 is sufficiently immersed in the cooking oil L, and the cooking time is measured. Be started. Note that the cancel switch 33 may be pressed before the microcomputer 9 receives the bottom dead center signal (S806). The processing in this case will be described later.

  The microcomputer 9 continues to count down the cooking time while the lift 13 is at the cooking position D. When the remaining cooking time becomes zero (“Yes” in S820), the microcomputer 9 supplies power to the motor 15 again to drive the motor. 15 is turned on, and the lift 13 is started to rise (S822). Then, when the microcomputer 9 receives the top dead center detection signal from the reed switch 21a (“Yes” in S824), the microcomputer 9 stops the power supply to the motor 15 and stops the lift 13 (S814). By such processing, after the food F in the basket 11 is automatically fried and cooked for a predetermined time, it is pulled up from the cooking oil L and cooking of the food F is completed. At this time, since the lift 13 is located at the preparation position U, the user can easily remove the basket 11 containing the cooked food F from the lift 13, and can also remove the basket 11 for the next cooking. Easy to set on the lift 13.

  In such a flyer 1, the user may desire to cancel cooking, for example, when the user makes a mistake in the menu switches SW1 to SW12 to be pressed or wants to interrupt cooking for some reason, the cancel switch 33 is pressed. May be. When the microcomputer 9 detects that the cancel switch 33 is depressed when the lift 13 is at the cooking position D (S816), the microcomputer 9 clears the remaining cooking time during the countdown to zero (S818). Since the remaining cooking time is cleared to zero (“Yes” in S820), immediately after that, the motor 15 is turned on (S822), and the lift 13 is raised to the preparation position D (S824, S826). By this process, the food F can be forcibly pulled up from the cooking oil L during the frying cooking, and cooking can be interrupted quickly.

  On the other hand, when the cancel switch 33 is pressed when the lift 13 is in the process of being lowered to the cooking position D immediately after the start of cooking (S806), a specific canceling process (S808) during the lift lowering is performed. The contents of this process (S808) will be described in more detail below with reference to FIGS.

  First, among the positions of the lift 13 that has not reached the cooking position D, as shown in FIG. 10 (a), the position of the lift 13 at which the food F is separated from the cooking oil L at the preparation position U or less, As referred to as “non-cooking position P”, as shown in FIG. 10 (b), the position of the lift 13 where the food F is already in contact with the cooking oil L above the cooking position D is “incomplete cooking”. This will be referred to as “position Q”. That is, when the lift 13 is in the non-cooking position P, the net portion 11c of the basket 11 is positioned above the liquid level L1 of the cooking oil L, and when the lift 13 is in the incomplete cooking position Q, The part 11c is located below the liquid level L1 of the cooking oil L. The microcomputer 9 turns on the motor 7 after the start of cooking, measures the elapsed time from FIG. 8 (S804), determines that the lift 13 is in the non-cooking position P if the elapsed time is less than a predetermined time, If the elapsed time is equal to or longer than the predetermined time, it can be determined that the lift 13 is at the incomplete cooking position Q.

  As shown in FIG. 9, in the cancellation process S808 during lift lowering, it is first determined whether the current position of the lift 13 is the non-cooking position P or the incomplete cooking position Q (S902). The process branches depending on the lift 13 position.

  First, in S902, when the position of the lift 13 when the cancel switch 33 is pressed is the non-cooking position P, the microcomputer 9 clears the remaining cooking time to zero (S906), turns off the motor 15, and lifts the lift 13. Is stopped (S908). Thereafter, when the microcomputer 9 detects the pressing of the cancel switch 33 again, the microcomputer 15 turns on the motor 15 again and resumes the lowering of the lift 13 (S912). Thereafter, when the processing returns to the flow of FIG. 8, the microcomputer 9 continues to turn on the motor 15 until it receives the bottom dead center detection signal (S810, S814), and then turns off the motor 15 once (S814). ) Since the remaining cooking time has already been cleared to zero, the motor 15 is immediately turned on (S820, S822), and when the top dead center detection signal is received, the motor 15 is turned off and the lift 13 is stopped (S824, S826). ).

  That is, when the cancel switch 33 is pressed while the lift 13 is descending and is in the non-cooking position P, the lift 13 stops on the spot at one end. Thereafter, when the cancel switch 33 is pressed again, the lift 13 resumes descent, descends to the cooking position D, and immediately rises to return to the preparation position U. According to such processing, if the user presses the cancel switch 33 before the food F comes into contact with the cooking oil L, the lift 13 can be stopped on the spot. And the basket 11 can be removed from the lift 13 which stopped, and the food F which is not in contact with the cooking oil L can be taken out. And if a user operates the cancellation switch 33 again after taking out the foodstuff F, the lift 13 can be returned to the preparation position U, and it can prepare for a new cooking operation.

  Thus, if it is going to return the lift 13 to the preparation position U at the time of cooking cancellation using the motor 15 which rotates only in one direction, it is necessary to pass through the cooking position D at one end, and the cooking oil L is not contacted. Even if it is the foodstuff F of this, it will have to pass through in the cooking oil L. FIG. However, in this fryer 1, when the cancel switch 33 is pressed, the lift 15 at the non-cooking position P is stopped once, and the user is given an opportunity to remove the food F in the basket 11, thereby preparing the lift 15. Even when returning to the position 13, the food F that is not in contact with the cooking oil L is not wastefully immersed in the cooking oil L, and waste of the food F can be suppressed. In the flyer 1, the above effect can be achieved by a simple operation such as temporarily stopping the motor 15, and it is not necessary to separately provide a switch for stopping the lift 13, thereby minimizing the cost increase. Can do.

  On the other hand, in S902 (FIG. 9), when the position of the lift 13 when the cancel switch 33 is pressed is the incomplete cooking position Q, the microcomputer 9 clears the remaining cooking time to zero (S904), and the motor 15 Is turned ON and the descent of the lift 13 is started (S912). Thereafter, when the processing returns to the flow of FIG. 8, the microcomputer 9 continues to turn on the motor 15 until it receives the bottom dead center detection signal (S810, S814), and then turns off the motor 15 once (S814). ) Since the remaining cooking time has already been cleared to zero, the motor 15 is immediately turned on (S820, S822), and when the top dead center detection signal is received, the motor 15 is turned off and the lift 13 is stopped (S824, S826). ). That is, when the cancel switch 33 is pressed, the lift 13 at the incomplete cooking position Q is lowered to the cooking position D at one end and then immediately rises to the preparation position U.

  Accordingly, when the cooking is canceled when the lift 13 reaches the incomplete cooking position Q and the food F comes into contact with the cooking oil L, the processing by the microcomputer 9 causes the cooking oil L to be processed as described above. The contacted food F is quickly pulled up from the cooking oil L, and waste of the food F can be suppressed as much as possible.

It is a perspective view which shows one Embodiment of the flyer which concerns on this invention. It is the disassembled perspective view which looked at the upper part and basket of the flyer of FIG. 1 from another viewpoint. It is sectional drawing of the flyer of FIG. It is the perspective view of the autolift mechanism seen from the back side in the state which removed the back panel of the flyer of FIG. In the fryer of FIG. 1, (a) is a figure which shows the positional relationship with a lift, a basket, and cooking oil, when a lift exists in a preparation position, and (b), when a lift exists in a cooking position. It is a front view which shows the operation panel of the flyer of FIG. It is a block diagram which shows the control system of the flyer of FIG. It is a flowchart which shows the process at the time of cooking of the fryer of FIG. FIG. 9 is a flowchart showing in more detail the processing when a cancel switch is pressed during lift lowering in the processing of the flyer of FIG. 8. In the fryer of FIG. 1, (a) is a figure which shows the positional relationship with a lift, a basket, and cooking oil, when a lift exists in a non-cooking position, and (b), when a lift exists in an incomplete cooking position. It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Flyer, 2 ... Oil tank, 9 ... Microcomputer (lift control part), 11 ... Basket, 15 ... Motor, 33 ... Cancel switch, D ... Cooking position (bottom dead center), U ... Preparation position (top dead center), P: Non-cooking position, Q: Incomplete cooking position, L: Cooking oil, L1: Liquid level.

Claims (3)

A basket that can hold the material to be cooked is held, and the motor that rotates only in one direction is repeatedly lowered to the bottom dead center and raised to the top dead center, and the basket is heated in the oil tank. In a fryer equipped with a lift that is movable to a cooking position where the cooking material is cooked by being immersed in the cooking material and a non-cooking position in which the cooking material in the basket is separated from the cooking oil,
A cooking execution switch for receiving an operation of cooking the cooking material;
A lift control unit that controls the motor to lower the lift from the non-cooking position to the cooking position and then raise the lift to the non-cooking position again when the cooking execution switch is operated;
A cancel switch for accepting an operation for canceling the cooking operation performed by the cooking execution switch;
With
The lift control unit, when the cancel switch is operated after the cooking execution switch is operated,
Controlling the motor to move the lift to the non-cooking position when the lift is in the cooking position;
A fryer characterized by controlling the motor so as to stop the lift when the lift is in the non-cooking position while descending to the cooking position. The lift control unit
When the cancel switch is operated after the cooking execution switch is operated,
When the lift is in the incomplete cooking position between the cooking position and the position where the cooking material in the basket is brought into contact with the liquid level of the cooking oil, the lift is moved to the non-cooking position. The flyer according to claim 1, wherein the motor is controlled to do so. The lift control unit
The motor is controlled so as to move the lift to the non-cooking position when the cancel switch is operated again after stopping the lift according to the operation of the cancel switch. Item 3. A flyer according to item 1 or 2.

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