DE2307225A1 - DEEP FAT FRYER - Google Patents

Description

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Anetsberger Brothers, Inc., Northbrook, Illinois, \ T.ot.A.

Deep-fat fryer

A deep fat fryer with a saucepan, combustion chambers, extending from front to back under the pot, burners near the front ends and a vertical one Chimney at the rear ends of the combustion chambers, is through a horizontal odenwand for the chimney with an air intake opening less flat than that marked horizontal surface of the chimney, as well as a cooling air intake, which is adjacent along its rear edge is attached to the rear edge of the opening and the one hanging part on v / eist, the one forward and includes downwardly sloping portion and a horizontal portion with a free edge forward from the Air intake opening is determined, which stands a distance under the floor chimney wall, which is a distance essentially from sixty percent of the ViTeite front to back at the rear of the air intake opening.

This invention relates generally to low-i ^l ettbrater and in particular to those commonly known as Gasbrater either by tube or underfiring.

309835 / 09U

The US-PS No. 3,363,541, although they sicli mainly on Referring to the crumb collection, reveals a deep-fat fryer with a saucepan, combustion chambers extending front to back under the pot burners near the front ends of the combustion chambers, and a vertical chimney that connects to the rear ends of the combustion chambers communicates with the bottom end of the chimney closed and with a safety wall of fire in rear at a distance from the chimney as a heat protection. The latter is necessary because with a commercially measured burr of 35.56 cm (H ") of such a construction and 135,000 BTU burner output the chimney temperature over 482 ° G (900 ° F) amounts to.

The main purpose of the invention is to determine the chimney temperature to lower significantly, with the resulting elimination of a housing overheat protection and a reduction the temperature of the rear wall of the pan, and the regeneration time of a deep fat fryer is the same as that of the patent No. 3 363 541 effectively reduce.

These dramatically improved results have been achieved by placing an air intake in -the essentially horizontal The bottom wall of the chimney is provided with a slightly smaller area than the horizontal area of the chimney is and adjacent to the rear edge of this air intake opening, a cooling air receiver is attached, the one has depending portion including a downwardly and forwardly sloping portion and a substantially horizontal forward extending section having a free edge forward from the front edge of the air intake forms, which is a distance at a distance below, which

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essentially sixty percent of the range from -forward to at the rear of the air intake.

The drawings show an "exemplary embodiment the invention.

Jig. 1 shows a side elevational view of a deep pett roaster according to the invention, with parts creeping away and parts shown in vertical section are and

Pig. 2 is a partial horizontal section, essentially after line 2-2 in Pig. 1, but enlarged Scale.

In the drawings, numeral 11 generally designates a deep pan fryer having the features of this invention, which is generally similar to the "construction" disclosed in applicant's earlier patent No. 3 363 54-1. As shown therein the roaster includes a saucepan, generally indicated by the reference numeral 25. The saucepan has side walls 26, a front wall 27, a rear wall 28 and a multi-curved base 29. This base 29 of the saucepan forms a pair of laterally spaced combustion chambers 31 ₅ which extend in the longitudinal direction from the front to the rear of the roaster between the front and rear walls 27 and 28. A horizontal bottom wall 35 defines the bottom of each of these combustion chambers 31. Under these bottom walls 35 of the combustion chambers, the front and rear walls 27 and 27 form 28 and the laterally spaced-apart lower parts of the curved base 29 and the side walls 26 cooling zones 36, as is more fully illustrated in FIG U.S. Patent No. 3,363,541. As has also been specified therein in detail, the central part of the saucepan 25 extends from the horizontal bottom walls 35 of the heat shield device 35 a short distance away

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over the uppermost parts of the pot base 29, which is a fat contains heating zone 37, while the upper part of the pot the usual frying zone 38 determines ..

laugh at the front of the relevant combustion chambers 31 is suitably a heat supply device in the form attached by upright burners 42 to keep flames from it towards the rear into their respective combustion chamber 31 to .right. It can be seen from Fig. 1 that the lowermost cooling zones 36 of the pot are inclined downwards and in advance, in order to drain the cooking fat therefrom with the aid of a manually operated drain valve 43.

All of the previously described devices in this arrangement are the same parts as those used in the Patent Ho, 3,363,541 and those used herein Reference numerals are also used to denote identical parts.

As in the referenced patent, the combustion chambers are standing with their rear ends with a vertically arranged chimney in connection, which with the reference number is designated. In patent no. 3 363 541 the bottom of this vertical chimney is closed. A security wall of fire, which is not denoted by a reference sign is, is arranged in rearward spaced relation to the chimney ■ as a heat shield. In this Brater like him here is shown, such a vertically arranged heat protection has been switched off and a substantially horizontal one Wall 62 at the bottom of the chimney 61 is with an air suction opening 63 of slightly smaller area than .the horizontal surface of the chimney is provided.

309835 / 09U

A cooling air housing, indicated generally by the reference numeral 64 ", is of any suitable type Way attached along its rear edge to the chimney bottom wall 62, the rear laterally Edge of the opening 63 is determined. This cooling air receiver 64 is made of a hanging part, the one downwardly and forwards inclined portion 65 and a substantially horizontal, forwardly extending Section 66 which ends in a free edge part 67 which extends forward slightly over the front edge of the air intake opening 63 extends beyond.

With this novel arrangement, cooling air is drawn through the housing 64 upward through the suction port 63 of the seams between the pot cooling zones 36 under the heat shields 35, as indicated by the arrows 68 in FIG. 1 is shown moving upwardly through chimney 61 substantially adjacent its rear wall and to mix with the combustion products flowing from the combustion chambers 31 into the chimney, as shown by arrows 69 in FIG.

The distance between the free edge 67 of the cooling air housing 64 under the floor chimney wall 62 has been found to be critical, although this ± κ actually cannot be fully understood. IEUs has been found, however, that this spacing of the free edge 67 must be under the Luftansaugeöffnung 63 substantially 60 i "of V / eite from front to rear of the opening 63rd For example, in the preferred embodiment of a commercially sized 35.56 cm (14 ") roaster with 135,000 atu burner capacity, a 10.16 cm (4") chimney and an air inlet of 9.32 cm (3 1/2 " ) from front to back the free edge 67 of the cooling air housing 64 is 5.8 cm (2 ") under the floor chimney wall 62.

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If 'this distance is reduced, the chimney temperature increases considerably, and if. this distance, decreased there is a loss of draft through the combustion chambers through and the burners 42 are disabled by the immediate appearance of upward and outward Directional flames between the front ends of the combustion chambers 31 and the burners 42 can be seen immediately will.

Comparative tests between the effect of such a deep fat roaster with the standard measurement as a 35.56 cm (H ") model with 13,500 Btu and closed bottom of the chimney and the same construction and burners with a 10.16 cm (4 ") deep chimney, a 9.32 cm (3 1/2") front-to-rear air inlet 63 in the chimney bottom wall 62, and a cooling air receiver 64 with its free edge (2 ") below the bottom wall 62 spaced apart (essentially $ 60> the front-to-back width of 63) gave the following average results.

1. With a cooling water circulating coil placed in the saucepan Continuous firing for 10 minutes raises the maximum fat temperature to 163 ° C (325 ° F) and

Chimney; Air inlet and temperature floor-closed sensor reduction

Chimney (950 ° F) 510 ° G (485 ⁰ F) 251 ° C 48.9 ^

Rear »found (580 ° F) 304 ° .0 (400 ⁰ F) 204 ° G 31 ? ° chimney

Back wall (150 ° F) 66 ° C (13O ⁰ F) 54 ° G 13, ° / ° cup

_ 7 "

309835/0914 > ■ ..,

2. With a roaster, the temperature for fat at rest is set to 166 ° G (330 ° F), burner is on, and if the fat temperature is 177 ° C (350 ° F) reached a yersuohs load of 2.27 kg (5 pounds) chopped potatoes from the same original 45.4 kg pack (100 pound source) placed in the usual basket, Each experiment performed after a fat temperature regeneration to 177 ° C (350 ° F) gave:.

Chimney bottom closed

Elapsed time
in outlines and
Seconds

1
2
2:47

fat
'femp.

(322 ⁰ F) 160 ⁰ G (335 ⁰ F) 169 ⁰ O (35O ⁰ F) 177 ⁰ C

chimney
üernp.

(88O ⁰ F) 471 ° G (895 ⁰ F) 479 ° 0 (93O ⁰ F) 499 ⁽

'C

Air suction and pick-up

Elapsed time
in minutes and
Seconds

1
2
2:09

fat
Temp.

(327 ⁰ F) 162 ⁰ G (345 ⁰ F) 174 ⁰ G (35O ⁰ F) 177 ⁰ C

chimney

i'emp.

(500 ⁰ F) 26O ⁰ C (51O ⁰ F) 266 ⁰ C (515 ⁰ F) 269 ⁰ C

This results in a chimney temperature reduction of 44 »5 i * and a reduction in regeneration time of 22.7%.

As a result, not only are new accidents dramatic with that Use & er air intake 63 and the cooling air housing 64 reduced, actually to the point where the. previous G-ehousing heat protection no longer required is, but the greatest decrease in the regeneration time,

309835/0914

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which is also obtained is of the utmost importance for economic effects. "The resulting reduction the rear boiler wall temperature simplifies the Cleaning the roaster, because of the ITe tt sprit ζ er, because the higher the temperature of the back wall, the stronger the connection of the same with the resulting splashes of fat.

309835/0914

Claims (5)

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Claims' 1 y ^ deep fat fryer with a saucepan, one combustion chamber extending from front to back under the pot, one at the front of the pot to supply heat to the burners adjacent to the combustion chamber and a vertical chimney connected to the Communicates at the rear of the combustion chamber, characterized by a substantially horizontal wall (62) at the bottom of the chimney (61), with an air intake opening (63) of smaller area than the horizontal one ! Surface of the chimney and a cooling air receiver (64), which runs along one edge adjacent to a transverse Part of the wall is attached, which defines a laterally extending edge of the opening and the one hanging down Has part which ends in a substantially horizontal free edge part (67) which is laterally below the other running edge of the opening is at a distance. 2. Deep fat fryer according to claim 1, characterized in that that the free edge (67) of the sensor under the bottom chimney wall (62) is a distance at a distance that essentially sixty percent of the front-to-rear width of the air intake opening (63) is spaced apart. 3 deep pett roasters according to claim 1, characterized in that the trailing edge (67) of the receiver (64) is that which attaches adjacent to the trailing edge of the air suction port (63) is and that the drooping part has a downward and forward sloping portion (65) and an im contains substantial horizontal, forwardly extending portion (66) which forms the free edge portion. - 10 - 309835/0914 4. Deep fat fryer according to claim 3> characterized in that - that the free edge part (67) of the transducer follows at the front over the front edge of the air intake opening (63)
extends beyond. 5. Deep fat fryer according to claim 4 »characterized in that 'that the free edge (67) of the sensor under the bottom chimney wall (62) is a distance at a distance that is essentially sixty percent of the front-to-back width of the air intake opening ~~ (55T is. 309835/0914 Blank page