JP2010183972A - Fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fryer that is able, with a simple structure, to prevent the conduct of heat from a storage vat to a housing, thereby improving the work environment and the degradation of oil. <P>SOLUTION: The fryer comprises a longitudinal square tube shaped housing 1, a storage vat 2, which stores cooking oil and is made from a planar flange 2b corresponding to the upper circumferential edge of the housing 1 and a reservoir 2a that is formed continuing downward from this flange 2b and is accommodated in the housing 1, and a heater 4, which is disposed inside the oil, wherein a second protruding member 7, which is disposed protruding outward from the outer sidewall surface at a position lower than the heater 4 in the storage vat 2, is supported on and fastened to a first protruding member 6, which is disposed on the housing 1 protruding inward, and a 1 mm or greater gap is disposed between the upper circumferential edge of the housing 1 and the flange 2b of the opposite storage vat 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a fryer that fries food in a storage tank in which heated oil is stored to make tempura or fry. The present invention relates to a fryer that has been improved to suppress thermal oxidation of oil.

Conventional fryer for business use is generally a fryer in which oil is stored in a storage tank and heated by a heater to cook fried food.
In recent years, there has been a fryer in which oil and water are stored in two layers in a storage tank and heated by a heater disposed in the oil layer to fry food (Patent Document 1). In such a fryer, the oil layer and the water layer are in contact with each other at the boundary surface, and fried debris and the like in the oil layer generated by cooking are separated into the water layer to maintain the cleanliness of the oil layer.

  Usually, the storage tank is provided with a flange around the periphery of the opening, and is placed from above in a rectangular tube-shaped housing placed vertically, so that the storage tank is kept at an appropriate height for cooking. Can be done. In such a fryer, the storage tank is fixed by supporting the flange portion of the storage tank on the peripheral edge of the upper end of the housing.

  When the oil layer is heated with a heater during fried cooking, two layers of a high-temperature oil portion and a low-temperature oil portion are formed at a position slightly below the heater. At the same time, the upper part of the storage tank is also heated, so that the heel part becomes high in temperature.

  When the housing becomes hot in this way, the heat of the oil high temperature part is radiated through the housing, the ambient room temperature rises, and the working environment for the flyer user is deteriorated. In addition, due to the rise in room temperature due to heat dissipation, the use of air conditioners such as coolers has increased costs. Furthermore, accompanying unnecessary heat radiation, it is necessary to heat the oil with a high-temperature heater, resulting in thermal oxidation of the oil.

  In Patent Document 2, in order to prevent the adjacent controller for cooking control from being overheated due to heat radiation from the storage tank, a heat insulating material is provided between the storage tank and the controller, and a cooling fan is provided in the storage part of the controller. A fryer is provided that cools with increased air flow. However, the cost has increased due to the installation of heat insulating materials and cooling fans.

Japanese Unexamined Patent Publication No. 07-308260 Japanese Patent Application Laid-Open No. 2002-223953

  The present invention has been made to solve the above-described problems, and provides a flyer capable of preventing heat conduction from a storage tank to a housing with a simple structure and improving work environment and oil deterioration. This is the issue.

In the present invention, means for solving the above problems are as follows.
According to a first aspect of the present invention, there is provided a vertically-placed rectangular tube-shaped housing, a flat-shaped flange corresponding to the upper peripheral edge of the housing, and a storage portion that is continuously formed below the flange and is accommodated in the housing. A fryer having a storage tank for storing cooking oil and a heater disposed in the oil, wherein the heater in the storage tank is provided on a first projecting member provided in the housing and protruding inwardly. A second projecting member projecting outward from the outer surface of the side wall at a lower position is supported and fixed, and a gap of 1 mm or more is provided between the upper peripheral edge of the housing and the flange of the storage tank facing the second projecting member. It is provided.
The flyer according to the second invention is characterized in that a heat insulating material is interposed in the gap.

  According to the first invention, by providing a gap of 1 mm or more between the peripheral edge of the upper end of the housing and the flange portion of the storage tank facing the housing, a position higher than the heater that is particularly high in the storage tank. Since the portion and the housing do not come into contact with each other, it is possible to effectively prevent heat conduction from the ridge portion of the storage tank to the housing. Further, a first projecting member provided in the housing and projecting inward is supported by a second projecting member projecting outward from an outer surface of the side wall lower than the heater in the storage tank. Therefore, the housing and the storage tank are not in direct contact with each other but are insulative because they are in contact with each other indirectly through the parts, and the second protruding member of the storage tank, which is a contact portion with the housing, is attached to the low temperature portion of the storage tank so Therefore, overheating of the housing can be prevented with a simple configuration. For this reason, it is possible to improve the work environment by reducing the heat radiation to the surroundings, and to prevent wasteful heat radiation, to suppress the heating temperature of the heater, and to suppress the thermal oxidation of oil. In addition, the utility cost for heating and cooling the heater can be reduced.

  According to the second invention, since the heat insulating material is interposed in the gap, the housing and the storage tank are shielded from heat, and the heat insulating material supports the flange portion of the storage tank, and the first protruding member and the second The load applied to the protruding member can be distributed. Further, by closing the gap, it is possible to prevent oil, batter liquid for fried food, moisture and the like from entering the housing from the gap.

1 is an exploded perspective view of a fryer according to an embodiment of the present invention. (A) is sectional explanatory drawing of the flyer, (b) is an enlarged view of the A section in (a). It is a perspective exploded explanatory drawing of the fryer which concerns on another aspect.

Hereinafter, a fryer according to an embodiment of the present invention will be described.
As shown in FIGS. 1 and 2, the fryer has a housing 1, a storage tank 2 accommodated in the housing 1 from above, and a heater 4 disposed in an oil layer 3 in the storage tank 2. .

As shown in FIG. 1, the housing 1 is formed in a vertically arranged rectangular tube shape, and houses each device and pipes and a controller for controlling them (not shown), and oil is placed on the top. The storage tank 2 to store is accommodated.
The housing 1 is composed of a frame 1a that is a rectangular parallelepiped frame and four rectangular outer plates 1b that cover the outer periphery of the frame.

The storage tank 2 includes a storage portion 2a and a flange portion 2b, and the storage portion 2a is formed in a square cylinder shape with an upper portion projecting downward and a square cone shape with a lower portion projecting downward, and has a drain outlet at the bottom portion (see FIG. 1, FIG. 2 (a)).
Further, in order to prevent oil or moisture from entering the housing 1, a flat flange 2 b corresponding to the upper peripheral edge of the housing 1 is provided around the opening peripheral edge of the upper end of the reservoir 2 a. ing. The flange portion 2b protrudes outward from the peripheral edge of the opening of the storage portion 2a, extends so as to match the outer edge of the housing 1, has a tip folded back downward, and is further folded inward at the lower tip. Is formed.
As shown in FIG. 2, the storage tank 2 has an oil layer 3 for frying food, and an aqueous layer 5 for purifying the oil by taking in the fried residue in the oil below the oil layer 3 into two upper and lower layers. Can be stored.

Further, a heater 4 for heating oil is provided in the oil layer 3 of the storage tank 2.
The heater 4 is disposed at substantially the center of the height of the oil layer 3. When the heater 4 is heated, the oil high temperature portion 3a and the oil low temperature portion 3b are separated from each other at a position slightly below the position of the heater 4. A layer is formed.
As a result, three layers of a water layer 5, an oil low temperature portion 3b, and an oil high temperature portion 3a are formed in the storage tank 2 in order from the bottom.

In the high-temperature oil part 3a, the food is put in a basket (not shown) formed directly or by a wire mesh or the like and is poured from above and fried at a predetermined temperature.
The low temperature oil part 3b serves as a temperature buffer part between the high temperature oil part 3a and the water layer 5, and also serves as a supply source of new undegraded oil.
The water layer 5 plays a role of a sedimentation layer for precipitating and collecting foreign matters such as deep-fried dregs that appear in the oil layer during cooking of the deep-fried food, and reduces deterioration of the oil layer 3.

Hereinafter, the attachment structure of the housing 1 and the storage tank 2 will be described.
As shown in FIG. 1, a pair of horizontal first projecting members 6 are stretched across the frame 1 a of the housing 1 at a predetermined height on the left and right sides. The first projecting member 6 is a plate material bent into an L-shaped cross section (FIG. 2B).
The first projecting member 6 has an L-shaped bent portion as a boundary, one of which is attached to the frame 1a, and the other projecting into the housing 1 as an attaching portion to the storage tank 2.

Both ends of the attachment portion of the first projecting member 6 to the frame 1a are fixed to the vertical frame of the frame 1a by bolts 8.
On the other hand, bolt holes 6a for fixing with a second protruding member 7 on the storage tank side and a bolt 9 described later are formed at both ends of the attachment portion with the storage tank 2.

The height at which the first projecting member 6 is attached to the frame 1a is such that when the second projecting member 7 on the storage tank side is supported and fixed, the flange 2b of the storage tank 2 and the peripheral edge of the upper end of the housing 1 opposite to this. The height is set so that a gap of 3 mm is formed between them, that is, the flange portion 2b of the storage tank 2 can be held 3 mm above the housing 1.
At that time, as shown in FIG. 2 (b), it is attached in such a posture that the attachment portion with the storage tank 2 protrudes inward from the upper end of the attachment portion with the frame 1a. This posture is preferable from the viewpoint of the mounting strength of the bolt 8, and the bolt 8 is unlikely to be detached due to a load applied to the first protruding member 6 when the storage tank 2 is mounted.

  As shown in FIGS. 1 and 2, a pair of second projecting members 7, which are plate members bent in an L-shaped cross section, are provided on the outer surface portions of the left and right side walls of the storage tank 2 from the heater 4 disposed in the oil layer 3. Is also mounted horizontally at a low position. The second projecting member 7 serves as an attachment portion with the welded portion with the storage tank 2 on one side and the first projecting member 6 projecting outward on the other side with an L-shaped bent portion as a boundary. .

The welded portion of the second projecting member 7 with the storage tank 2 is attached to the boundary between the upper portion of the storage portion 2a of the storage tank 2 and the lower portion of the quadrangular pyramid shape. This position is lower than the position where the heater 4 is disposed in the oil layer 3, and is a height corresponding to the oil low temperature portion 3b or the water layer 5 that is kept at a relatively low temperature even when the oil layer 3 is heated by the heater 4. is there. Generally, the oil low temperature part is kept at about 80 ° C., and the water layer is kept at about 30 ° C.
On the other hand, bolt holes 7 a for fixing to the first projecting member 6 with bolts 9 are formed at both ends of the attachment portion with the first projecting member 6.
When welding to the storage tank 2, it attaches with the attitude | position which the attachment part with the 1st protrusion member 6 protrudes outward from the lower end of the welding part with the storage tank 2. FIG.

In order to store the storage tank 2 in the housing 1, the storage tank 2 is inserted from above the frame 1 a of the housing 1, and then the second protruding member 7 protruding from the storage tank 2 on the first protruding member 6 attached to the frame 1 a. The bolt hole 6a and the bolt hole 7a are combined and fixed with the bolt 9, and finally the outer plate 1b is attached and covered on the outer periphery of the frame 1a.
At this time, the lower end surface of the flange portion 2 b of the storage tank 2 is held above it with a gap of 3 mm between the upper end peripheral portion of the housing 1. As a result, the portion of the storage tank 2 that is located higher than the heater 4 that is at a particularly high temperature does not come into contact with the housing 1 including the flange 2b. Therefore, heat conduction from the flange 2b of the storage tank 2 to the housing 1 is effective. Can be prevented.

Further, by attaching the second projecting member 7 to the outer surface of the side wall having a relatively low temperature lower than the heater 4 in the storage tank 2, the second projecting member 7 of the storage tank 2, which is a contact portion with the housing 1, is heated. Therefore, overheating of the housing 1 can be prevented with a simple configuration.
For this reason, the temperature of the housing 1 hardly rises even during the deep-fried cooking, the heat radiation to the surroundings can be reduced and the working environment can be improved, and the use of a high-temperature heater without wasteful heat radiation. It can suppress and prevent thermal oxidation of oil. In addition, the utility cost for heating and cooling the heater can be reduced.

In the present embodiment, the first projecting member 6 and the second projecting member 7 are installed on the left and right sides of the housing 1 and the storage tank 2, respectively, but may be changed according to the design of the housing 1 and the storage tank 2. For example, it may be installed on the front and back sides of the housing 1 and the storage tank 2, or may be installed on all four side walls.
In addition, heat conduction can be reduced if the gap between the upper peripheral edge of the housing 1 and the flange 2b of the storage tank 2 is 1 mm or more, but providing a gap of 3 mm or more as in this embodiment is particularly effective. And desirable.
Further, the present invention is not limited to the fryer in which the water layer 5 is provided below the oil layer 3 of the storage tank 2, and can also be applied to a conventional fryer having only the oil layer 3 in the storage tank.

  Moreover, the shape of the 1st protrusion member 6 and the 2nd protrusion member 7 is not limited to the board | plate material of a cross-sectional L-shape. For example, like a tripod of a laboratory instrument, there are a plurality of horizontal projecting members that are in contact with the quadrangular pyramidal portion of the reservoir 2a of the storage tank 2, and a plurality of legs that are suspended from the second projecting member to the floor. The storage tank 2 may be supported at a height at which a gap is provided between the upper peripheral edge of the housing 1 and the flange 2b of the storage tank 2 by the first projecting member. Also in this case, the first protruding member is fixed to the housing 1 by, for example, stretching a plate material to the housing 1.

<Another aspect>
In said embodiment, you may make it interpose a heat insulating material in the clearance gap provided between the upper-end peripheral part of the housing 1, and the collar part 2b of the storage tank 2. FIG.
In this other aspect, as shown in FIG. 3, a long and thin silicon heat insulating material 10 having a height of 4 mm and a width of 10 mm is compressed in a natural state and provided between the upper peripheral edge of the housing 1 and the flange 2b of the storage tank 2. It is sandwiched in a 3 mm gap.

  The silicon heat insulating material 10 is interposed so as to close the gap between the front side and the left and right sides of the fryer over the entire circumference of the gap. In the rear side, normally, the silicon heat insulating material 10 is not disposed because the oil, batter liquid for fried food, moisture, etc. rarely enter the inside of the housing 1, but the silicon heat insulating material 10 is also disposed in the rear side. May be.

  In order to sandwich the silicon heat insulating material 10 into the gap, the silicon heat insulating material 10 is sandwiched and compressed when the storage tank 2 is inserted into the frame 1a from above during the assembly of the fryer. Other steps are the same as those in the above embodiment.

  In this way, the silicon heat insulating material 10 is interposed in the gap provided between the upper peripheral edge of the housing 1 and the flange portion 2b of the storage tank 2, thereby insulating the housing 1 and the storage tank 2 from each other, and The heat insulating material 10 supports the flange portion 2b of the storage tank 2, and the load applied to the first projecting member 6 and the second projecting member 7 can be dispersed. Further, by closing the gap, it is possible to completely prevent oil, batter liquid for fried food, moisture and the like from entering the housing 1 from the gap.

In general, since the air layer has better heat insulation than a solid heat insulating material, it is desirable that the width of the heat insulating material be minimized so that oil or the like can be prevented from entering the housing 1. In this other embodiment, the width of the lower end surface of the flange portion 2b and the peripheral edge of the upper end of the frame 1a are both 35 mm, whereas the width of the silicon heat insulating material 10 is 10 mm.
Moreover, the kind of heat insulating material is not limited to silicon, and any heat insulating material that can withstand the temperature of the oil high temperature part (up to about 200 ° C.) can be used.

DESCRIPTION OF SYMBOLS 1 Housing 1a Frame 1b Outer plate 2 Reservoir 2a Reservoir 2b Fence 3 Oil layer 3a Oil high temperature part 3b Oil low temperature part 4 Heater 5 Water layer 6 First projecting member 6a Bolt hole 7 Second projecting member 7a Bolt hole 8 Bolt 9 Bolt 10 Silicon insulation

Claims (2)

A vertical rectangular housing,
A storage tank for storing cooking oil, comprising a flat-shaped flange corresponding to the peripheral edge of the upper end of the housing, and a reservoir formed continuously under the flange and housed in the housing;
A fryer having a heater disposed in the oil,
The first projecting member provided in the housing and projecting inwardly carries and fixed the second projecting member projecting outward from the outer surface of the side wall lower than the heater in the storage tank. A fryer characterized in that a gap of 1 mm or more is provided between a peripheral edge of the upper end and the flange of the storage tank facing the upper edge.   2. The fryer according to claim 1, wherein a heat insulating material is interposed in the gap.

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