JP2009011453A - Fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fryer capable of saving energy by reducing the heat radiating quantity of oil in a standby state. <P>SOLUTION: The heat radiation of the oil can be suppressed by closing the top face of an oil tank 3 with a slide cover 20 when heating cooking is not carried out by arranging the slide cover 20 slidable between a storing position where the slide cover opens the top face of the oil tank 3 and is housed in the lateral face side of the housing 2 and a shutting position where the slide cover closes the top face of the oil tank 3 in the housing 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fryer in which oil contained in an oil tank is heated by heating means such as a pulse combustor, and ingredients are put into the oil tank for cooking.

  As shown in Patent Documents 1 and 2 and the like, the fryer includes an oil tank in which cooking oil is stored and heating means such as a pulse combustor that heats the oil in the oil tank above the housing. By heating the oil in the oil tank to a predetermined temperature with a heating means and feeding the ingredients, the ingredients can be cooked by heating.

Japanese Patent Application Laid-Open No. 2002-223953 JP 2002-85268 A

  In the above fryer, once cooking is finished and the heating means is stopped, the temperature of the oil in the oil tank decreases, and even when the heating means is operated when cooking again, the temperature reaches the cooking temperature. Since it takes time, it is often the case that the temperature of the oil is maintained at a predetermined heat retaining temperature by, for example, intermittently operating the heating means even in a standby state where cooking is not performed. However, since the upper surface of the oil tank is always open, the amount of heat released from the oil surface is large, and wasteful energy is consumed during the heat insulation, and the life of the oil is shortened and the working environment due to combustion exhaust is increased by increasing the number of heating. It was deteriorating.

  Accordingly, an object of the present invention is to provide a fryer that can reduce the amount of heat released from the oil in a standby state, leading to energy saving and maintenance of the life of the oil.

In order to achieve the above object, the invention described in claim 1 is characterized in that the housing is provided with shielding means capable of arbitrarily opening and closing the upper surface of the oil tank.
In addition to the object of the first aspect, the invention according to claim 2 is configured such that the shielding means is accommodated at an arbitrary position in the housing by opening the upper surface of the oil tank in order to easily form the shielding means in a space-saving manner. The slide cover is slidable between the storage position and the shielding position for closing the upper surface of the oil tank.
In addition to the object of the first or second aspect, the invention according to claim 3 provides the shielding means with an oil tank in order to make the shielding means a simple structure capable of quickly responding to switching between cooking and keeping warm. The nozzle is characterized in that air is blown substantially horizontally on the upper surface of the nozzle to form an air curtain.

According to the first aspect of the present invention, by providing the shielding means, it is possible to reduce the heat radiation amount of oil in the standby state, and it is possible to save the amount of gas consumed at the time of heat retention, leading to energy saving. In addition, since the number of heating times during heat retention is reduced, the life of the oil is extended, and the amount of combustion exhaust is reduced, so that improvement of the working environment can be expected.
According to the second aspect of the invention, in addition to the effect of the first aspect, the shielding means can be easily formed in a space-saving manner by the slide cover.
According to the invention described in claim 3, in addition to the effect of claim 1 or 2, by adopting a nozzle, it is possible to quickly respond to switching between cooking and keeping warm, and noise during use does not occur. The structure is simpler and the risk of failure and the like is reduced. In addition, oil smoke can be discharged by blowing out air.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Form 1]
FIG. 1 is an explanatory view from the right side showing an example of a fryer, FIG. 2 (A) is a plan view, FIG. 1 (B) is a front view, and a fryer 1 is placed in a pair of left and right housings 2, 2. , A pulse combustor 4 as a heating means for heating the oil in the oil tank 3, and an oil cleaner 5 for filtering the oil. Each pulse combustor 4 is connected to a combustion chamber 6 provided in the oil tank 3 where pulse combustion is performed, a tail pipe 7 through which combustion exhaust from the combustion chamber 6 passes, and a downstream side of the tail pipe 7. A combustion exhaust system including decouplers 8 and 8 provided on both sides of the oil tank 3 and an exhaust pipe 9 connected to the downstream side of each decoupler 8 and installed behind the housing 2 is provided.
Reference numeral 10 denotes an air chamber provided outside the front side of each oil tank 3, which includes a mixing chamber (not shown) communicating with the combustion chamber 6, and a muffler 12 and an air supply pipe 13 from the blower 11 provided on the bottom surface of the housing 2. Combustion air can be supplied via this. The gas conduit 14 connected to the mixing chamber in the air chamber 10 includes electromagnetic valves 15 and 15 for controlling opening and closing of the fuel gas supply path to the pulse combustor 4 and a gas governor 16 for adjusting the gas pressure. Is provided.

  Further, a controller 17 is provided at each lower portion of the front side of each housing 2. The controller 17 is connected to the electromagnetic valves 15 and 15 and a temperature sensor 18 provided in the oil tank 3, and the controller 17 detects the oil temperature in the oil tank 3 based on the temperature detection signal from the temperature sensor 18. ON / OFF control for intermittently burning the air-fuel mixture in the combustion chamber 6 by controlling the opening and closing of the solenoid valves 15 and 15 so as to maintain the cooking temperature at a cooking temperature (for example, 180 ° C. to 182 ° C.). It has become. Reference numeral 19 denotes an operation panel that is provided at the upper part on the front side of the housing 2 and is used for setting a cooking mode, a set temperature, and the like and giving an input instruction to the controller 17.

  Each housing 2 is provided with a slide cover 20 as a shielding means. Since it is bilaterally symmetrical, only the right side of FIG. The storage position (right side of FIG. 2 (B)) is stored in the storage unit 21 and vertically accommodated in the storage unit 21 along the guide rail 22 provided in an inverted L shape from the storage unit 21 to the upper part of the oil tank 3. From the two-dot chain line position) to the shielding position (solid line position on the right side of the figure) where the upper side of the housing 2 and the upper part of the oil tank 3 are substantially closed. Reference numeral 23 denotes a pull-out handle. Further, the slide cover 20 is normally urged to the accommodation position by a spring mechanism (not shown) provided in the accommodation portion 21, and at the shielding position, the partition portion between the oil tanks 3 and 3 provided on the upper portion of the housing 2. The position can be maintained by locking with the lock portion 24 provided on the head. Reference numeral 25 denotes an open / close detection switch that is provided in the housing portion 21 and is turned on by interfering with the edge of the slide cover 20 at the shielding position of the slide cover 20 and turned off at the housing position.

  In the fryer 1 configured as described above, the oil tank 3 is filled with oil with the slide cover 20 in the storage position and the upper part of the oil tank 3 is opened, and a cooking instruction is given by the operation panel 19 in a predetermined cooking mode. The controller 17 burns the air-fuel mixture in the combustion chamber 6 to operate the pulse combustor 4, heats the oil to the cooking temperature, and maintains the cooking temperature by ON / OFF control of the pulse combustor 4. Therefore, when the food material is put into the oil tank 3 through the basket, the food material is cooked by hot oil. The combustion exhaust generated in the combustion chamber 6 is discharged from the tail pipe 7 to the decoupler 8 and exhausted from the exhaust pipe 9 to the rear of each housing 2.

  On the other hand, when heat cooking is not performed, when a heat insulation instruction is given by the operation panel 19, the controller 17 causes the pulse combustor 4 to maintain the oil temperature in the oil tank 3 at a predetermined heat insulation temperature lower than that during heat cooking. Although ON / OFF control is performed, simultaneously with this heat retention instruction, the slide covers 20 of the left and right oil tanks 3 and 3 are pulled out to the shielding position and locked by the lock unit 24, and the upper part of the oil tank 3 is closed. As a result, the amount of heat released from the upper surface of the oil is suppressed and the oil is less likely to be absorbed, so the number of heating of the pulse combustor 4 is reduced. In the case of performing the cooking again, the cooking instruction is given by the operation panel 19, the engagement with the lock portion 24 is released, the slide cover 20 is returned to the accommodation position, and the upper portion of the oil tank 3 is opened.

Thus, according to the fryer 1 of the first aspect, the heat release amount of oil in the standby state can be reduced by providing the housing 2 with the shielding means that can arbitrarily open and close the upper surface of the oil tank 3. The amount of gas consumed during heat insulation can be saved, leading to energy saving. In addition, since the number of times of heating at the time of heat retention is reduced, the life of the oil is lengthened, and the exhaust amount of combustion exhaust is reduced, so that improvement of the working environment can be expected.
In particular, here, the shielding means is slid between an accommodation position where the upper surface of the oil tank 3 is opened and the housing 2 is accommodated at an arbitrary position (here, on the side surface) and a shielding position where the upper surface of the oil tank 3 is closed. By using the possible slide cover 20, the shielding means can be easily formed in a small space.

In the first embodiment, the slide cover may be made of synthetic resin or cloth as long as it is flame retardant, in addition to metal. In addition, the accommodation part may be accommodated vertically by a spring mechanism, or a known winding mechanism using a roll may be used. In this case, if the winding mechanism is installed not at the lower side of the side of the housing but at the upper end of the side, it can be pulled out and stored quickly in a short time.
Furthermore, in the above embodiment, the oil tank is pulled out in the left-right direction, but it is also possible to provide a slide cover along with a winding mechanism at the end edge on the back side of the oil tank and close the oil tank upper surface by pulling out toward the front side.
In addition, a non-contact type sensor may be used for opening / closing detection of the slide cover.

[Form 2]
Next, another embodiment of the present invention will be described. Since the basic configuration of the flyer is the same as that of the first embodiment, the same components are denoted by the same reference numerals and redundant description is omitted.
In the fryer 1a shown in FIG. 3, a pair of pipes 26 and 26 are attached to the left and right upper edges of the oil tank 3 in each casing 2, and nozzles serving as shielding means are provided on the opposing surfaces of the two pipes 26 and 26. 27, 27,... Are provided at predetermined intervals. The pipes 26 and 26 are connected to a blower unit 29 provided for each casing 2 via a connection tube 28. The blower unit 29 is driven by a heat retention instruction from the operation panel 19. When the blower unit 29 is driven, air is sent to the pipe 26 through the connection tube 28, and the air is blown out substantially horizontally from the nozzles 27. become.

In the fryer 1 a configured as described above, when the oil tank 3 is filled with oil and a cooking instruction is given by the operation panel 19 in a predetermined cooking mode, the controller 17 cooks the oil by ON / OFF control of the pulse combustor 4. Heating to temperature enables cooking of ingredients.
On the other hand, when heat cooking is not performed, when a heat insulation instruction is given by the operation panel 19, the controller 17 causes the pulse combustor 4 to maintain the oil temperature in the oil tank 3 at a predetermined heat insulation temperature lower than that during heat cooking. Although ON / OFF control is performed, the left and right blower units 29 are driven simultaneously with this heat retention instruction. Then, air blows out from the nozzles 27 at the upper part of the left and right oil tanks 3 to form an air curtain, so that the amount of heat released from the upper surface of the oil is suppressed, making it difficult for the oil to be caught and reducing the number of times the pulse combustor 4 is heated. To do. In the case of performing cooking again, if the cooking instruction is given to the operation panel 19, the driving of the blower unit 29 is stopped and the blowing of air from the nozzle 27 is eliminated.

Thus, also in the fryer 1a of the second aspect, the heat radiation amount of oil in the standby state can be reduced, and the amount of gas consumed during heat insulation can be saved, leading to energy saving. In addition, since the number of times of heating at the time of heat retention is reduced, the life of the oil is lengthened, and the exhaust amount of combustion exhaust is reduced, so that improvement of the working environment can be expected.
In particular, here, the shielding means is a nozzle 27 that blows air substantially horizontally on the upper surface of the oil tank 3 to form an air curtain, so that it is possible to quickly cope with switching between heating cooking and heat retention, and noise during use. In addition, there is an advantage that the structure is simpler than that of the first mode and there is less possibility of failure. Moreover, the discharge effect of the oil smoke which stayed in the oil tank 3 by the blowing of air is also acquired.

  In the second embodiment, the air curtain is blown out from the left and right sides of each housing in the center, but may be blown out from the front and rear sides to the center by arranging pipes at the front and rear ends of the oil tank. In addition, not only blowing from both sides in each housing, but if an air curtain can be formed, a pipe may be provided only on one side and blown in one direction. Of course, the number and shape of the nozzles can be changed as appropriate, such as adopting a nozzle having a flat outlet or connecting a connecting tube for each nozzle without a pipe.

In addition, in common with Embodiments 1 and 2, the heating means is not limited to the pulse combustor, but may be one using a gas burner, not a fryer having a pair of oil tanks, but a fryer having a single oil tank. Even if it exists, this invention is applicable respectively.
Moreover, not only when each form 1, 2 is applied independently, but when there are a plurality of oil tanks, the slide cover of form 1 is applied to some oil tanks, and the air curtain of form 2 of the remaining oil tanks is applied respectively. It is also possible.

  And in the said form 1,2, it is the structure which performs the cancellation | release of the shielding by a slide cover or an air curtain by a cook's manual operation or operation of an operation panel, respectively, In order to shorten the rise time to heat cooking The shield can be automatically released together with the release of the heat retention. For example, in the first aspect, a winding mechanism including a motor can be provided at the front and rear ends of the slide cover in and out, and can be automatically wound from the shielding position to the storage position at a predetermined timing. As for this timing, when a customer visits the store (when the door open signal is input to the controller), when an order is received for a menu using the flyer (when an order signal to the store clerk's mobile terminal is input to the controller) ), When the cook approaches the fryer (when a detection signal from an infrared sensor or the like is input to the controller). Of course, even in the case of the air curtain of mode 2, this automatic shielding can be performed in the same manner by stopping the blower unit at the input timing of each signal.

On the other hand, the shielding means is not limited to a slide cover or an air curtain. For example, a lid capable of closing the upper opening of the housing is hinged to one end edge by a hinge, and along the side of the housing during cooking. It can be appropriately changed without being limited to the above-described form, for example, stored in a suspended state, and when the temperature is kept, the lid is flipped up and rotated to close the upper opening of the housing.

It is explanatory drawing of the right side surface of the fryer of form 1. (A) is a top view of a fryer, (B) is a front view. It is explanatory drawing of the fryer of form 2, (A) shows a plane and (B) shows a right side, respectively.

Explanation of symbols

  1, 1a · Flyer 2 · Housing 3 · Oil tank 4 · Pulse combustor 5 · Oil cleaner 6 · Combustion chamber 7 · Tail pipe 17 · Controller 19 ·· Operation panel, 20 ·· Slide cover, 21 ·· Accommodating section, 22 ·· Guide rail, 26 ·· Pipe, 27 ·· Nozzle, 29 ·· Blower unit.

Claims (3)

A fryer equipped with an oil tank filled with oil and heating means for heating the oil in the oil tank above the housing,
The fryer characterized in that the housing is provided with shielding means capable of arbitrarily opening and closing the upper surface of the oil tank.   The shielding means is a slide cover that is slidable between an accommodation position in which an upper surface of the oil tank is opened and accommodated at an arbitrary position in the housing and a shielding position that closes the upper surface of the oil tank. Item 2. The flyer according to item 1.   The fryer according to claim 1 or 2, wherein the shielding means is a nozzle that blows air substantially horizontally on the upper surface of the oil tank to form an air curtain.

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