JP2005130886A - Electric fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely perform the opening / closing operation of a safety switch corresponding to mounting / demounting of a heater to/from a storage device. <P>SOLUTION: The electric fryer is provided with the storage device 11 storing liquid, the heater 12 detachably mounted on the storage device 11 for heating the liquid in the inside 11a of the storage device, and the safety switch 14 and an operation device 15 arranged on the inner side of the electric box 13 of the heater 12, and the safety switch 14 is opened and closed by the operation device 15 at the time of mounting the heater 12 on the storage device 11. The operation device 15 comprises a detector 18 freely movable forwards and backwards and provided with a projection part 17 inserted into the through-hole 16 of the electric box 13 and projecting forwards to the outer side of the box and a coil spring 19 provided concentrically to an axial center A along the forward and backward movement directions of the detector 18 for energizing the detector 18 in the direction of forward projection. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric fryer for heating and cooking fish, vegetables and the like with a liquid, particularly edible oil.

A conventional electric flyer includes a storage device that stores liquid, a heating device that is detachably attached to the storage device and heats the liquid in the storage device, and a safety switch and an operation device that are arranged inside an electrical box of the heating device. When the heating device is attached to the storage device, the safety switch is turned on with the operation device so that the heating device can be energized, and when the heating device is detached from the storage device, the safety switch is turned off. It prevents dangerous emptying of the heating device. As an operating device for opening and closing a safety switch, there is one described in Patent Document 1.
Japanese Utility Model Publication No. 60-113747

  As shown in FIG. 10, the operating device 1 is provided with a protrusion 3 on the storage device 2, and when the heating device 4 is mounted on the storage device 2 inside the bottom of the electrical box 5 that houses the components of the heating device 4. A fitting portion 6 that receives the protruding portion 3 is disposed in the state shown in FIG. 5B, and a movable switch that opens and closes the safety switch 7 of the heating device 4 is brought into contact with the protruding portion 3 on the upper portion of the fitting portion 6. The piece 8 is arranged.

  However, in the conventional technique described in Patent Document 1, when the heating device 4 is attached to the storage device 2, it is difficult to align the protrusion 3 and the fitting portion 6. If a positional deviation occurs between the safety switch 7 and the safety switch 7, the safety switch 7 may not be turned on. Further, in the conventional technology, when the heating device 4 is detached from the storage device 2, the movable piece 8 does not fall off due to the oil adhering to the fitting portion 6 and the safety switch remains in the ON state. May become empty. Therefore, the present invention was devised in view of these drawbacks of the prior art, and an electric fryer equipped with an operating device that reliably opens and closes a safety switch in accordance with the attachment / detachment of a heating device to / from a storage device. The purpose is to provide.

  In order to ensure that the safety switch is opened and closed in accordance with the attachment / detachment of the heating device to / from the storage device, the means adopted by the present invention according to claim 1 is a storage device for storing liquid and is detachable from the storage device. A heating device that heats the liquid in the storage device and a safety switch and an operation device arranged inside the electrical box of the heating device, and when the heating device is attached to the storage device, the safety switch is operated by the operation device. In the electric flyer that opens and closes, the operating device includes a movable detector that has a protruding portion that passes through the through-hole of the electrical box and protrudes forward to the outside of the box, and an axis that extends in the advancing and retracting direction of the detector. A coil spring which is provided concentrically and biases the detection tool in a forward projecting direction, and when the heating device is mounted on the storage device, the detection tool abutting the protruding portion on the storage device is biased by the coil spring The opening / closing operation is performed by retreating against the above-described state so that the heating device can be energized, and when the heating device is detached from the storage device, the detection tool is advanced by the biasing force of the coil spring, so that the opening / closing is performed. An electric fryer characterized in that the heating device is deenergized without any operation.

  In this invention of Claim 1, when mounting a heating apparatus in a storage apparatus, the protrusion part of the detection tool which protrudes ahead to the outer side of a box contact | abuts to a storage apparatus, and is reliably retracted. Can be energized, it is possible to increase the allowable range of the position where the heating device is attached to the storage device, and the heating device is detached from the storage device to release the pressure on the protruding portion of the detector. Then, the detection tool is surely moved forward by the urging force of the coil spring to put the heating device in a non-energized state. Furthermore, in the present invention, since the two axes that are concentric with the detection tool and the coil spring coincide with the advancing and retreating direction of the detection tool, the resultant force transmitted between the detection tool and the coil spring is Therefore, the force transmitted between the detection tool and the coil spring is smoothly transmitted.

According to a second aspect of the present invention, the operating device operates the projecting portion, a spring seat portion in which one end portion of the coil spring is in a stationary state, and the safety switch. The electric fryer according to claim 1, wherein a switch pressing plate is joined. The protruding portion, the spring seat portion, and the switch pressing plate may be integrally formed of a synthetic resin material or the like. Further, when the protruding portion of the detection tool protrudes forward to the outside of the box, the through hole may be covered with a spring seat portion so that liquid or the like does not enter inside the box.
In this invention, the part which advances / retreats can be made compact by joining a protrusion part, a spring seat part, and a switch pressing board.

In order to accurately arrange the coil spring, the means adopted by the present invention according to claim 3 is that the operating device is configured such that the other end of the coil spring is fixed to a spring seat provided on a fixture to which the safety switch is attached. The electric fryer according to claim 2, which is in contact with the state.
In the present invention, the other end of the coil spring can be fixed at a predetermined position.

In order to ensure smooth deformation of the coil spring and smooth advancement and retraction of the switch pressing plate, the means adopted by the present invention according to claim 4 is characterized in that the operating device includes a spring cover for preventing spring bending surrounding the outside of the coil spring. The electric fryer according to claim 2 or 3, wherein the switch pressing plate is arranged outside the spring cover, and the switch pressing plate is guided by the spring cover so as to be freely advanced and retracted.
In the present invention, the coil spring that is deformed in the advancing / retreating direction of the detection tool is prevented from being bent and deformed by the spring cover, and the switch pressing plate is guided by the spring cover to advance / retreat.

  In the present invention according to claim 1, one spring seat portion joined to the projecting portion and brought into contact with one end portion of the coil spring in a stationary state, and the other spring coil portion joined to the electrical box. The other spring seat portion that abuts the end portion in an immobile state, and an operation rod that extends from one spring seat portion and projects through the inside of the coil spring and the through hole of the other spring seat portion, In some cases, the safety switch is operated by a protruding portion of the operation rod that moves forward and backward in conjunction with the protruding portion.

  In the electric fryer according to the first aspect of the present invention, when the heating device is attached to the storage device, the allowable error range of the attachment position can be increased, so that there is a slight misalignment between the storage device and the heating device. However, the heating device can be reliably energized, and when the heating device is detached from the storage device, the detection tool reliably moves forward by the biasing force of the coil spring, thereby deactivating the heating device. As a result, the electric flyer according to the present invention can surely perform the opening / closing operation of the safety switch in accordance with the attachment / detachment of the heating device to / from the storage device.

  In the electric flyer according to the second aspect of the present invention, the advancing / retreating portion can be made compact and easy to handle.

  According to the third aspect of the present invention, the coil spring can be accurately arranged by fixing the other end of the coil spring at a predetermined position.

  According to the fourth aspect of the present invention, since the bending deformation of the coil spring that is deformed in the advancing / retreating direction of the detector is prevented and the switch pressing plate is advanced and retracted while being guided by the spring cover, the coil spring can be smoothly deformed and the switch pressing plate Smooth advance and retreat can be secured.

  An electric fryer according to the present invention (hereinafter referred to as “the electric fryer of the present invention”) will be described based on an embodiment shown in the drawings.

(First embodiment)
1 to 8 show a first embodiment of the electric fryer of the present invention, and FIG. 1 is a perspective view as seen from obliquely above showing a state in which a storage device 11 and a heating device 12 are separated. FIG. 2 is a right cross-sectional view of the storage device 11 and the heating device 12, and FIG. 2A shows a state where the heating device 12 is detached from the storage device 11, and FIG. 2B shows the storage device 11. The state which mounted | wore with the heating apparatus 12 is shown. FIG. 3 is a perspective view of the inside of the electrical box 13 as viewed from the rear upper side. 4 is an enlarged view of the operating device 15 and the safety switch 14, wherein FIG. 4A is a plan view and FIG. 4B is a rear view. 5 is a cross-sectional view taken along line VV in FIG. 4A, and FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is an enlarged rear view of the operating device 15 and the safety switch 14 when the heating device 12 is attached to the storage device 11. FIG. 8 is a cross-sectional view showing another embodiment of the detection tool 18.

  As shown in FIGS. 1 and 2, the electric fryer 10 of the present invention has a storage device 11 that stores liquid and a heating device that detachably attaches to the storage device 11 and heats the liquid in the liquid storage tank 11 a as shown in FIGS. 1 and 2. A safety switch 14 and an operation device 15 arranged inside the electrical equipment box 13 of the heating device 12 and the operation device 15 are provided, and the safety switch 14 is opened and closed by the operation device 15 when the heating device 12 is mounted on the storage device 11. It is. As shown in FIGS. 4 and 5, the operating device 15, which is an improved portion of the electric fryer 10 of the present invention, has a protrusion 17 that is inserted through the through hole 16 of the electrical box 13 and protrudes forward to the outside of the box. A tool 18 and a coil spring 19 provided concentrically with the axis A along the advancing / retreating direction of the detecting tool 18 and biasing the detecting tool 18 in a forward projecting direction (arrow C direction) are provided. The through hole 16 is formed in the bottom plate 13 c of the electrical box 13. The coil spring 19 is a columnar compression spring in which a spring wire is spirally wound, and the center axis B extending vertically is made to coincide with the axis A of the detection tool 18.

  As shown in FIGS. 5 and 6, the detection tool 18 of the operating device 15 includes the protrusion 17, a spring seat 28 in which one end (lower end) of the coil spring 19 is in a stationary state, and a safety switch. 14 is provided with a switch pressing plate 29 for operating 14. The projecting portion 17 is configured by tightening a bolt 31 that is fitted around the distant tube 30 with a female screw 32 provided at the center of the spring seat portion 28. The detection tool 18 covers the through hole 16 with a spring seat 28 when the protrusion 17 protrudes forward to the outside of the box so that liquid or the like does not enter from the outside of the box into the inside 13 a of the electrical box 13. In addition, as shown in FIG. 8, the detection tool 18 may integrally form the projecting portion 17, the spring seat portion 28, and the switch pressing plate 29 with a synthetic resin material or the like to make the advancing and retracting portion compact.

  As shown in FIGS. 4 and 5, the operating device 15 is provided with a spring bending prevention spring cover 33 that surrounds the outside of the coil spring 19 and a switch pressing plate 29 disposed outside the spring cover 33. Is guided to move forward and backward. As shown in FIG. 7, when the coil spring 19 is pressed and deformed by the detection tool 18 moving in the backward direction (upward), it tends to bend and deform outward (radial direction of the coil spring 19) due to buckling or the like. However, the bending is prevented by the spring cover 33. At this time, the switch holding plate 29 is guided by the spring cover 33 and smoothly advances and retracts.

  As shown in FIG. 4, the spring cover 33 is attached to a fixture 34 to which the safety switch 14 is attached with a screw or the like, and surrounds the outside of the coil spring 19 with a U-shaped surrounding portion 33 a and the fixture 34. . The fixture 34 is attached to the front plate 13d of the electrical box 13 with screws or the like. The fixture 34 is provided with a spring seat 35, and the other end (upper end) of the coil spring 19 is brought into contact with the stationary state, and the coil spring 19 is arranged at a predetermined position.

  As shown in FIG. 4, the safety switch 14 includes a switch main body 14a with a built-in contact and an operation piece 14b for opening and closing the contact, and the operation piece 14b is pressed by a switch holding plate 29 to swing ( (See FIG. 7) The electric heater 22 (see FIG. 2B) of the heating device 12 is made energized, and conversely, the pressing by the switch pressing plate 29 is released and the operation piece 14b is automatically returned (see FIG. 7). 4 (B)) The electric heater 22 of the heating device 12 is in a non-energized state.

  As shown in FIGS. 1 and 2, the storage device 11 is provided with a liquid tank 21 inside the outer casing 20 so that heated objects such as fish and vegetables can be taken in and out from the opened upper surface of the liquid tank 21. is there. The storage device 11 has a contact piece 27 protruding from the rear surface of the outer casing 20, and when the heating device 12 is joined, the protruding portion 17 of the detection tool 18 protruding forward of the heating device 12 is contacted with the contact piece 27. The detection tool 18 is moved backward by being pressed.

  In the heating device 12, an electric heater 22 protrudes in a cantilevered manner from the front surface of the electrical box 13. When the heater 12 is attached to the storage device 11 (see FIG. 2B), the electric heater 22 is disposed on the inner bottom of the liquid tank 21 and heats the liquid (for example, edible oil) in the tank 11a. The electrical box 13 accommodates the safety switch 14 and the operating device 15 in the inner side 13a, and is connected to a temperature sensing cylinder 12 (see FIG. 1) for detecting the temperature of the liquid in the liquid tank 21a. A controller 23 (see FIG. 3) having a power supply and a power switch 36 that can be opened and closed from the outside of the box are housed. When the detachable rear plate 13b is removed, the inner side 13a of the electrical box 13 can be inspected.

  Between the storage device 11 and the heating device 12, as shown in FIG. 2, there is provided a connector 24 for detachably connecting the two. The connector 24 includes a hook metal fitting 25 provided on the rear surface of the storage device 11 and a fixing metal fitting 26 provided on the front surface of the electrical equipment box 13, and a hook piece 26 a of the fixing metal fitting 26 is inserted into the insertion hole 25 a of the hook metal fitting 25. Is inserted to join the two. The fitting between the insertion hole 25a and the hooking piece 26a is in a clearance state so that the hooking piece 26a can be easily inserted into the insertion hole 25a. Even if a position slip occurs between both the gaps 11 and 12, the safety switch 14 can be opened and closed with the contact piece 27 reliably brought into contact with the tip of the projecting portion 17. The hook metal fitting 25 is integrally formed with the contact piece 27.

  When the electric fryer 10 of the present invention is used with the heating device 12 attached to the storage device 11 (see FIG. 2B and FIG. 7), the detector 18 having the protruding portion 17 in contact with the storage device 11 is provided. The controller 15 retreats (moves upward) against the urging force of the coil spring 19 so that the operating device 15 opens and closes the safety switch 14 so that the heating device 14 can be energized, opens and closes the power switch 15 and controls the controller. The temperature of the liquid in the liquid storage tank 11a is adjusted with the temperature adjustment dial 23. Further, when the heating device 12 is detached from the storage device 11 and is not used (see FIGS. 2A and 4B), the detector 18 moves forward (moves downward) by the biasing force of the coil spring 19. Thus, the operating device 15 puts the heating device 12 in a non-energized state without opening and closing the safety switch 14. By making the heating device 12 in a non-energized state, the electric heater 22 is not energized even when the power switch 15 is opened, so that safety is ensured.

  In the electric fryer 10 of the present invention, when the heating device 12 is mounted on the storage device 11, the protruding portion 17 of the detector 18 that protrudes forward to the outside of the box abuts against the storage device 11 and reliably moves backward, thereby heating the heating device 12. In order to make it possible to energize the storage device 11, it is possible to increase the allowable range of the position at which the heating device 12 is attached to the storage device 11, and even if there is a slight misalignment between the storage device 11 and the heating device 12 It is possible to ensure that the device 12 can be energized. In addition, when the electric fryer 10 of the present invention separates the heating device 12 from the storage device 11 and the pressing of the protruding portion 17 of the detection tool 18 is released, the detection tool 18 is reliably advanced by the biasing force of the coil spring 19. The heating device 12 is turned off. Furthermore, in the electric flyer 10 of the present invention, since both axial centers A and B that are concentric with the detection tool 18 and the coil spring 19 coincide with the advancing and retreating direction of the detection tool 18, the electric flyer 10 is provided between the detection tool 19 and the coil spring 19. The direction of the resultant force of the force to be transmitted coincides with the two axes A and B, and the force transmitted between the detector 18 and the coil spring 19 is smoothly transmitted.

(Second Embodiment)
FIG. 9 shows a main part of a second embodiment of the electric fryer of the present invention, (A) is a rear view, and (B) is a sectional side view. The electric flyer 40 according to the present embodiment differs from the electric flyer 10 according to the first embodiment in that the spring cover 33 and the switch pressing plate 29 for preventing spring bending of the electric flyer 10 according to the present invention. That is, the controller 45 is configured by omitting. The configuration other than this difference is substantially the same as that of the first embodiment, and the same reference numerals as those of the first embodiment indicate the same contents.

  The operating device 45 is joined to the projecting portion 17 and one spring seat portion 28 in which one end portion (lower end) of the coil spring 19 is brought into an immovable state, and to the electrical box 13 and joined to the other end of the coil spring 19. The other spring seat 35 with its end (upper end) in a stationary state, and one spring seat 28 extending from the inside of the coil spring 19 and the through hole 35a of the other spring seat 35 are projected. The safety switch 14 is operated by a protruding portion 46 a of the operating rod 46 that moves forward and backward in conjunction with the protruding portion 17. The operation rod 46 may be formed by the bolt 31 that constitutes the protruding portion 17. Although not shown, the projecting portion 17, the one spring seat portion 28, and the operation rod 46 may be integrally formed of a synthetic resin material or the like.

  The electric fryer 40 according to the present invention has a detection tool in which the protrusion 17 is brought into contact with the contact plate 27 of the storage device 11 when the heating device 12 is attached to the storage device 11 (see FIGS. 2B and 7). When 48 is retracted (moved upward) against the urging force of the coil spring 19, the operating rod 46 of the operating device 45 opens and closes the safety switch 14 so that the heating device 14 can be energized (FIG. 9B). ), And when the heating device 12 is detached from the storage device 11 (see FIGS. 2A and 4B), the urging force of the coil spring 19 is used to detect the detector 48. Advance (move downward), the operating rod 46 of the operating device 15 puts the heating device 12 in a non-energized state (the state shown by the solid line in FIG. 9B) without opening and closing the safety switch 14.

1 shows a first embodiment of an electric fryer of the present invention, and FIG. 1 is a perspective view as seen from obliquely above showing a state in which a storage device and a heating device are separated. The right side sectional view of the storage device and heating device in the embodiment is shown, (A) shows a state where the heating device is detached from the storage device, and (B) shows a state where the heating device is mounted on the storage device. Is shown. It is the perspective view which looked at the inside of the electrical equipment box in the embodiment from the back upper part. The operation device and the safety switch in the embodiment are shown in an enlarged manner, in which FIG. (A) is a plan view and FIG. (B) is a rear view. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 5 is a cross-sectional view taken along line VI-VI in FIG. In the embodiment, it is a rear view which expands and shows an operating device and a safety switch when a heating device is attached to the storage device. It is sectional drawing which shows another aspect of a detection tool. The principal part of 2nd Embodiment of this invention electric flyer is shown, (A) is a rear view, (B) is the sectional side view. The operation device with which the conventional electric fryer is equipped is shown, Comprising: (A) shows the state which isolate | separated the heating apparatus from the storage apparatus, (B) shows the state which joined the heating apparatus to the storage apparatus It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Storage device, 11a ... Inside storage device, 12 ... Heating device, 13 ... Electrical equipment box, 14 ... Safety switch, 15 ... Operation device, 16 ... Through-hole, 17 ... Projection part, 18 ... Detection tool, 19 ... Coil spring

Claims (4)

  A storage device that stores liquid, a heating device that is detachably attached to the storage device and heats the liquid in the storage device, and a safety switch and an operation device that are disposed inside the electrical box of the heating device, In an electric fryer that opens and closes a safety switch with an operating device when mounted on a storage device, the operating device has a protruding part that protrudes forward through the through hole of the electrical box and advances forward. And a coil spring that is provided concentrically with the axial center along the advancing / retreating direction of the detection tool, and biases the detection tool in a direction in which the detection tool moves forward, and when the heating device is attached to the storage device, When the detector contacting the protrusion moves backward against the urging force of the coil spring, the opening / closing operation is performed so that the heating device can be energized, and when the heating device is detached from the storage device, Electrical wherein the Rubane sensing member by the urging force of the is de-energized the heating device without performing the closing operation by advancing the flyer.   2. The electric flyer according to claim 1, wherein the operating device joins the projecting portion, a spring seat portion in which one end portion of the coil spring is in a stationary state, and a switch pressing plate for operating the safety switch.   The electric flyer according to claim 2, wherein the operating device has a spring seat provided on a fixture to which the safety switch is attached abuts the other end of the coil spring in an immobile state. 4. The operation device according to claim 2 or 3, wherein a spring cover for preventing spring bending is provided surrounding the outer side of the coil spring, the switch pressing plate is disposed outside the spring cover, and the switch pressing plate is guided forward and backward by the spring cover. Electric flyer.

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